Tensile testing machine
Tensile testing machine is also known as the universal materials testing machine. Universal testing machine is used for a variety of materials for instrumentation static load, tensile, compression, bending, shear, tearing, peeling and other mechanical properties of the mechanical properties of the test with the mechanical force of the test machine, suitable for plastic plates, tubes, profiles, plastic film and rubber, wire and cable, steel, glass fibers, and other materials, a variety of physical and mechanical properties of the test for the development of materials, for the physical properties of the test, teaching and research, quality control, and so on, indispensable testing equipment, tensile testing machine, tensile testing machine, tensile testing machine, tensile testing machine, tensile testing machine, tensile testing machine. Indispensable testing equipment, tensile machine fixture as an important part of the instrument, different materials require different fixtures, but also whether the test can be carried out smoothly and the accuracy of the test results is an important factor.
Chinese name tensile testing machine application metal and non-metallic material testing alias universal material testing machine precision level 1 / 0.5 applicable to plastic plates, tubes, profiles, etc.
Type FR-103C
Test object
Servo tensile testing machine is mainly applicable to metal and non-metallic material testing, such as rubber, plastics, wires and cables, fiber optic cables, seat belts, safety belts, metal and non-metallic materials, such as rubber, plastics, wires and cables, fiber optic cables, safety belts, safety belts, metal and non-metallic material testing.
The servo tensile strength machine is mainly suitable for the test of metal and non-metal materials, such as rubber, plastic, wire and cable, fiber optic cable, safety belt, insurance belt, leather belt composite materials, plastic profiles, waterproof coil, steel pipe, copper, profiles, spring steel, bearing steel, stainless steel (as well as other high-hardness steel), castings, steel, steel, steel, steel, non-ferrous metals, wire and cable tensile, compression, bending, shear, peeling, tearing, and two-point elongation (with a separate extensometer).
Measurement principle
1) Tensile testing machine force measurement is through the force transducer, expander and data disposal system to complete the measurement. Learned from the data mechanics, under the premise of small deformation, an elastic element at a point of strain ε and the elastic element is proportional to the force, but also proportional to the elasticity of the transformation. S-type testing machine sensor, for example, when the sensor is subjected to the effect of tension P, because the elastic element appearance pasted with strain gauges, due to the strain of the elastic element is proportional to the magnitude of the external force P, so the strain gauges access to the measurement circuit, you can measure the output voltage, and then measured the magnitude of the force.
2) deformation measurement through the deformation measurement device to measure, it is used to measure the specimen in the experimental process of deformation. The installation has two collets, through a system of transmission of ideas and photoelectric encoder installed in the measurement of the top of the installation connected together, when the interval between the two collets onset of change, driven by the photoelectric encoder shaft twist, the photoelectric encoder will have a pulse flag signal output. And then by the disposal of this flag signal processing, you can derive the deformation of the specimen.
3) beam displacement measurement of its reasoning with the deformation of the same measurement is to measure the output pulse of the photoelectric encoder to obtain the displacement of the beam.
Precision calibration
1) Initial calibration of the main body
2) Tensile testing machine precision calibration
After the ground nut is poured, it is not allowed to tighten the ground nut and start the testing machine before the cement dries. (Cement drying time is generally not less than 10-15 days) to wait until the cement is completely dry, fasten the good luck foot nut, the accuracy of the installation of the test machine to review, whether it is consistent with the accuracy of the correction. If it does not conform to should be re-centering.
Tension testing machine in the process of use, due to the vibration of the test is prone to loose phenomenon, so the tension testing machine after a period of time, the relevant parts should be tightened.
2. Have you heard of the universal testing machine?
Universal testing machine, set tensile, bending, compression, shear and other functions in one of the material testing machine, mainly used for metal, non-metallic materials mechanical properties test, is the industrial and mining enterprises, scientific research units, universities and colleges, engineering quality supervision station and other departments of the ideal testing equipment.
Instrumentation Brief
Microcomputer display universal testing machine
Universal testing machine, also known as universal material testing machine, or tensile strength machine, double screw series, control, measurement, operation of the integrated structure, the integration of contemporary advanced technology in one, with high precision, wide range of speed control, compact structure, easy to operate, stable performance and other advantages. Electronic universal testing machine to meet the GB/T1040, 1041, 8804, 9341, 9647, ISO7500-1, GB16491, GB/T17200, ISO5893, ASTM D638, 695, 790 and plastic pipe and other standards.
Applicable to plastics, waterproof materials, textiles, paper products and rubber and other materials specimens and products of the tensile, compression, bending, creep test and equipped with a large platen can be directly carried out pipe flat compression (compression recovery), the ring stiffness (resistance to external loads), the creep ratio, the ring tensile strength and other tests.
Instrument Composition
Universal Materials Testing Machine is composed of measurement system, drive system, control system and computer (computer system type tensile testing machine) and other structural components.
The instrument classification
If the universal testing machine on the market according to the use of classification, can be categorized as the determination of mechanical properties of the testing machine. According to the use of the test machine can be divided into two categories:
1) Determination of mechanical properties of the test machine
2) process test machine
Operating procedures
⒈ ⒈ to make the main switch on the power supply.
⒉ According to the specimen, the choice of measurement range, hang or remove the pendulum on the pendulum and adjust the buffer valve handle, aligned with the markers.
3 according to the shape and size of the specimen to the corresponding chuck into the upper and lower jaw seat.
Sung on the cylinder of the tracing device, rolled and pressed good record paper (grid paper), this is only when necessary.
Be careful to start the oil pump motor, unscrew the oil delivery valve so that the test bench to rise 10 millimeters, and then close the valve, if the test bench has been in the rising position is not necessary to open the oil pump to send oil, only the oil delivery valve can be closed.
Select one end of the specimen clamped in the upper jaw.
Borrow Start the pump and adjust the needle to the zero point of the dial.
Start the lower jaw motor and raise and lower the lower jaw to the appropriate height, clamp the other end of the specimen in the lower jaw, taking care to keep the specimen vertical.
Sneakers according to the test requirements of the loading speed, slowly unscrew the oil delivery valve for loading test.
The sample breaks after closing the valve, and stop the oil pump motor.
Application form records the required values and will be depicted.
Surrounding open the oil return valve, after unloading the passive needle dialed back to zero.
Remove the broken specimen.
Compression and bending tests can be performed as described above.
3. Nanoindentation - testing of micro- and nano-scale thin film materials
The Nanoindentation Tester is mainly used for hardness and Young's modulus testing of micro- and nano-scale thin film materials. The test results are calculated by the curve of the force versus the depth of the indentation, and there is no need to look at the area of the indentation through a microscope.
Instrument Introduction
Nanoindentation Tester
Nanoindentation Tester is mainly used to measure the hardness and elastic modulus at nanometer scale, which can be used to study or test the contact stiffness, creep, elastic work, plastic work, fracture toughness, stress-strain curve, fatigue, storage modulus and loss modulus of nanomaterials such as thin films and other characteristics. It can be applied to the testing and analysis of organic or inorganic, soft or hard materials, including PVD, CVD, PECVD films, photographic films, colored glazes and lacquers, optical films, microelectronic coatings, protective films, decorative films and so on. The substrates can be soft or hard materials, including metals, alloys, semiconductors, glass, minerals, and organic materials.
Chinese Name Nanoindentation Instrument Measurement Hardness and Young's Modulus of Film Materials Test Parameters Elastic Work, Plastic Work, Fracture Toughness Package PVD, CVD, PECVD Main Applications
Semiconductor technology (Passivation Layer, Metallic Plating, Bond Pads); Storage Materials (Protective Layer on Disks, Magnetic Coating on Disk Substrates, Protective Layer on CDs); Optical Components (Contact Lenses, Fiber Optics, Optical Scratch Protection Layer); Metal Vapor Deposition Layers; Wear Resistant Coatings (TiN, TiC, DLC, Cutting Tools); Pharmacology (Tablets, Implantable Materials, Biological Tissues); Engineering (Paints & Coatings, Rubber, Touch Screens, MEMS) and other industries.
Technical Features
1. Fully compliant with ISO14577, ASTME2546
2. Automatic observation by optical microscope
3. Unique thermal drift control technology
4. Available hardness, stiffness, modulus of elasticity, fracture stiffness, failure point, stress-strain, creep Performance and other mechanical data.
5, timely measurement of load size
6, using an independent load loading system and high-resolution capacitive depth sensor
7, fast piezoelectric ceramic-driven load feedback system
8, dual-standard correction: fused silica and sapphire
4. Metal Surface Characterization and Chemical Adsorption Instrument
Chemical adsorption is a method of evaluating catalyst surface properties. Adsorption instrument is a powerful tool for evaluating catalyst characterization and is one of the analytical equipments for studying metal surface characterization. The instrument is widely used in the research of petrochemical, chemical, energy, biology, food, medicine and health, surface metals and nanomaterials, automobile exhaust, chemical waste gas conversion and treatment.
Full-automatic program temperature rising chemical adsorption instrument
Product application fields
1) It can determine the metal dispersion, active metal surface area, active particles, and surface acidity of catalyst materials;
2) It can study the oxidation and reduction properties of metals and determine the acidity center and desorption performance;
3) It can display the whole process of adsorption and desorption;
4) It can be applied to the research of petrochemical, chemical, energy, biology, food, medicine and nanomaterials, surface metals and nanomaterials, automobile exhaust gas, chemical waste gas conversion and treatment. p>
4) applied to high-temperature and high-pressure gas adsorption research, supercritical gas performance research, microporous material adsorption research, hydrogen storage material performance research, coal bed methane research, petroleum exploration, etc.; Typical applications include catalysts, molecular sieves, activated carbon, carbon nanotubes, and a variety of hydrogen storage materials; Product Principle
Dynamic analysis technology (programmed warming technology), as a kind of original characterization technology, can be used in the As an original characterization technique, it can effectively study catalytic processes under reaction or near-reaction conditions, and the chemisorption instrument is an important instrument for dynamic programmed warming research, which is capable of carrying out programmed temperature desorption (TPD), programmed temperature reduction (TPR), programmed temperature sulfide (TPS), programmed temperature surface reaction (TPSR) and single-site BET on fresh catalysts as well as programmed temperature oxidation (PTO) on deactivated catalysts and dry catalysts. programmed thermal oxidation (TPO) studies on deactivated catalysts, dry catalysts. Acidity, acid distribution, active metal dispersion, and metal-carrier interactions are also studied.
Chemisorbents can be categorized into two types, atmospheric pressure and high pressure, where high pressure chemisorbents can more accurately reflect the actual reaction conditions, while atmospheric pressure chemisorbents have the advantages of simple maintenance, easy operation, and short time-consumption. Characterization of many situations can be achieved using this method, which is a common means of catalyst characterization.
5. Physical adsorption meter and material specific surface and pore volume
Physical adsorption meter/specific surface and pore analyzer is the equipment to determine and analyze the specific surface, pore volume and pore distribution of porous and powder materials, which is widely used in the research of materials in colleges and universities and scientific research institutes, and in monitoring the quality of products in the powder materials manufacturing enterprises.
Physical Adsorbent Analyzer
Applications
1) Adsorb nitrogen as adsorbent to measure and analyze the specific surface, pore volume and pore distribution of porous and powder materials;
2) Adsorption of water vapors and adsorption of vapors of ethanol, benzene, and other organic liquids;
3) Applied to the adsorbent (e.g., activated carbon, silica, activated alumina, etc.);
4) Applied to the adsorbent (e.g., activated carbon and silica, activated alumina, etc.) Activated alumina, etc.); ceramic raw materials (such as alumina, zirconia, silicate, etc.); rubber and plastic materials reinforcing agent (such as carbon black, white carbon black, nano-calcium carbonate, etc.); battery materials (such as lithium cobalt, lithium manganese, zinc, etc.); metal oxides (such as zinc oxide, calcium oxide, etc.); magnetic powder materials (such as tri-iron tetroxide, ferrite, ferrite, etc.); nano-metal materials (such as nanosilver, copper and iron powder); rare earth metals (such as silver, copper and copper, etc.); rare earth materials (such as silver, copper, copper, copper, etc.) Nano-metal materials (such as silver nanopowder, iron powder, copper powder, etc.); rare earth ultrafine fibers, porous fabrics, composites and other powders and particles of the surface area and pore size of the detection and analysis of the material;
Principle of operation
Nitrogen adsorption method assumes that a layer of nitrogen molecules adsorbed on the surface of the powder, it has been known that each nitrogen molecule occupies a cross-sectional area of 0.162 nm2, then the powder specific surface area (Sg) can be derived from the following equation: Sg = 4.36Vm / W , Sg = 0.162 nm2, the powder specific surface area (Sg) can be derived by the following formula 4.36Vm / W ,where Vm is the monolayer adsorption of nitrogen on the surface of the powder material of weight W .
6. Foam Characterization and the Foam Analyzer
The Foam Analyzer
The Foam Analyzer is the first instrument that can be used for laboratory testing and quality control, enabling objective, reproducible testing and comparison of foam kinetics. It automatically measures the foam characteristics of surface-active, aqueous solutions such as personal care products, soaps and detergents. Temperature changes, sample volume and other parameter settings realistically simulate actual product use.
Product Description
The Foam Analyzer is an instrument for laboratory testing and quality control that enables objective, reproducible testing and comparison of foam kinetics. It automatically measures the foam characteristics of surface-active aqueous solutions such as personal care products, soaps and detergents. Temperature changes, sample volume and other parameter settings realistically simulate actual product use.
Application Areas
1) Measurement of the most important parameters of foam: foam stability and foam life;
2) Monitoring of changes in foam dispersion;
3) Generation of foams with different dispersions and monitoring of the effect of dispersion on foam drainage and life/stability;
4) Individual studies of foam drainage and foam stability;
5) Application of the Foam Drainage and Foam Stability System (FDS) to the production of foam for a variety of applications. p>
5) Applications in foam production: skin care products, fire extinguishing agents, food industry, foam cleaning, polymer foams, flocculant development, etc.; defoaming: defoamers, detergents, paints and inks, biological industry, etc.; 7. Particle Size and Laser Particle Size Analyzers
Laser Particle Size Analyzers are instruments specifically designed to analyze the size of particles by the spatial distribution of diffracted or scattered light from the particles (scattering spectrum) The laser particle size analyzer is an instrument designed to analyze the size of particles by the spatial distribution of diffracted or scattered light (scattering spectrum).
Based on the stability of the spectrum is divided into static light scattering particle size meter and dynamic light scattering laser particle size meter.
Laser particle size analyzer
Instrument classification
Static laserEnergy spectrum is a stable spatial distribution. It is mainly suitable for testing micron-sized particles, and the lower limit of measurement can also be extended to tens of nanometers after improvement.
Dynamic laserAccording to the speed of the Brownian motion of the particles, the size of the nanoparticles is analyzed by detecting the dynamic light scattering signals from one or two scattering angles, and the energy spectrum changes with time at high speed. The dynamic light scattering principle of the particle size meter is only applicable to the testing of nanometer-sized particles.
Light Transmission SettlingOften referred to as laser particle size analyzers are diffraction and scattering principle particle size analyzers, light transmission settling instrument, based on the principle of Stokes' law of sedimentation rather than the laser diffraction / scattering principle, so this type of instrument can not be called a laser particle size analyzer. Technical parameters
Optical systemUIS optical system (infinity correction system)
Illumination deviceBuilt-in transmitted light K?hler illumination, 6V30W halogen lamp 100-120V/220-240Vg0.85/0.45A 50/60Hz
Focusing systemThe vertical movement of the load table by the roller ( Rack-and-pinion) mechanism guided by the coarse and fine coaxial knob, coarse adjustment stroke of 36.8mm per turn, the total stroke of 25mm, fine adjustment stroke of 0.2mm per turn, with coarse adjustment limiters and tension adjustment ring
Objective turntableFixed 4-hole objective turntable tilted inward
Observation tube⒈ ⒈ binocular observation tube ⒈ observation tube ⒈ binocular observation tube ergonomic tilt binocular observation tube
Carrier tableSize 188mm × 134mm, the range of movement of the X-axis 76mm × Y-axis 50mm, two-piece specimen holder, standard rubber cap
Spotting scopeAbbey spotting scope, built-in daylight filters, the numerical aperture of 1.25 (when immersed in oil), the built-in Aperture diaphragm
EyepiecesOrdinary wide field eyepieces 10X (F.N. 20) 15X (F.N. 12)
Optional accessories⒈ double **** cable ⒈ phase contrast accessories (standard phase contrast accessory and simple phase contrast accessory for CX41) ⒊? 3 μμm sung sung sung plotted carefully gout polarizing device / simple polarizing accessory (for CX41) select optional darkfield Concentrator Borrow Simple Darkfield Film Micrometer μ Pointer Sneaker Digital Imaging Unit
ApplicationsTeaching, Clinical, General Pathology 8. Nanoparticle Particle Size Testing and Nanoparticle Sizers
Nanoparticle sizers are instruments that physically test the size and distribution of solid particles. It adopts high speed digital correlator and high performance photomultiplier tube as the core device, which has the features of easy operation, fast test, high resolution, high repeatability and accurate test, etc. It is the first choice of nano-particle particle size testing products. Instrument Introduction
Dynamic Light Scattering Nano Laser Particle Sizer Chinese Name Nano Particle Sizer Function Test the size and distribution of solid particles Core Components High-speed Digital Correlator High-performance Photomultiplier Tubes Adoption of Technology Digital Correlator Performance Features
Advanced Testing Principle: This instrument adopts the principle of Dynamic Light Scattering and the Photon Correlation Spectroscopy technology to determine the size of particles according to the speed of the Brownian motion of the particles in the liquid. The instrument adopts dynamic light scattering principle and photon correlation spectroscopy to determine the particle size according to the speed of Brownian motion in liquid. It is characterized by advanced principle and high precision, which ensures the authenticity and validity of the test results. High sensitivity and signal-to-noise ratio: The detector of this instrument adopts professional-grade high-performance photomultiplier tube (PMT), which has extremely high sensitivity and signal-to-noise ratio to the photon signal, thus ensuring the accuracy of the test results. Extremely high resolution: To determine the size of nanoscale particles using PCS technology, it is necessary to be able to resolve nanosecond signal ups and downs. The core component of this instrument is the CR140 digital correlator developed by Micro-Nano, which has a very high resolution capability of recognizing 8ns and a very high signal processing speed, so that accurate measurement results can be obtained. Superior operation function: The instrument adopts self-developed high-speed digital correlator CR140 for data acquisition and real-time correlation operation, and its data processing speed is as high as 125M, so as to reflect the dynamic light scattering information of particles in real time effectively.Stable optical path system: The optical path system built with short wavelength LD pump laser light source and fiber optic technology makes the photon correlation spectroscopy detection system not only small in size, but also has a strong anti-interference ability, which ensures the stability of the test
Scope of application
A variety of nanometer and submicron solid particles and emulsions.
9. Fluidizers and Sifters
Designed for applications where sieving of fluidizers in a two-dimensional horizontal plane must be guaranteed, and for related industry standards, the sifters are ideal for production quality control and laboratory R&D. For many production and R&D areas, faced with the need to classify and sieve materials that are fibrous, flat or elongated particles, such as, wheat, grains, fibers, tobacco, plants, flat crystalline substances, etc., accurate classification and particle size analysis of such substances should be used in the horizontal movement of the sieve instrument.
Screening Instrument Technical Parameters
Application: fibrous, flat, long granular material material size analysis, material separation and grading Screening Principle: Analysis of the sieve in the horizontal plane to do the regular, or non-regular circumferential movement, in order to achieve rapid and accurate grading of fibrous, flat, long granular material, particle size distribution analysis and separation1/4 1234NextEndPage
Adjustable range of non-regular circular motion: 0-30mm Measuring range: 20um-125mm Number of screening stages: 8 stages Frequency of movement: 270 times/min Time setting: 1-99 minutes can be set Installation: Quick and comfortable screen fixture Screen size: 200mm, 210mm, 300mm, or 200mm. 210mm, 300mm, or 8", 214mm Sieve standard: in accordance with ISO3310-1, DINEN10204.21, ASTME11 Instrument dimensions: LxWxH=474mmx603mmx604mmLCD digital display and control of sieving time, Reliable sieving results
Wear-resistant metal material, corrosion-resistant baked enamel surface, durable and easy to clean
Optional analytical sieve materials: stainless steel (polished), brass, polymer materials, etc.Principle of operation
Motor drives a flat surface that can be fitted with analytical sieves up to a maximum diameter of 300mm in either a regular or non-regular horizontal circular motion. According to the standards of different industries and application needs, the sieve can be fixed in the plane to do regular circular motion, or let the sieve placed in the adjustable 0-30mm gap movement plane, so that the sieve in the process of horizontal movement, by the four horizontal direction of the soft collision, thus slightly changing the direction of the circular motion, so that the analytical sieve materials can be screened in the horizontal plane constantly change the direction of movement, to disperse the materials, and accelerate the speed of the sieve. The sieving process can be accelerated by the material being sieved in the analytical sieve by changing the direction of movement on the horizontal surface.
10. Particle impurities and particle counters
He2Ne laser particle counter, can analyze the gas 011μm particle size particles impurities; Ar2Kr laser particle counter can analyze the 0105μm particle size particles impurities, there are already available in the detection of ultra-high purity of 01005μm particle counters. Condensation nuclei particle counters can measure particles of nanometer size. Particle counter measuring instruments for sale with the need to JJF1190-2008 "dust particle counter calibration specification" requirements issued by the statutory calibration certificate.
Instrument Brief
Particle CounterChinese Name Particle CounterExternal Name Particle CounterClasses Laser Particle CounterCondensation Nucleus Particle CounterAnalysis 011μm particle size in the gasUse to test the air dust particle particlesInstrument Use
Particle Counter is a special instrument to test the particle size of the air dust particle particles and their distribution. Developed from microscope, it has experienced the process of microscope, sedimentation tube, sedimentation instrument, centrifugal sedimentation instrument, particle counter, laser air particle counter, condensation nucleus particle counter, multi-channel multi-functional particle counter, etc. At present, it is widely used in the pharmaceutical industry, pharmaceutical workshop, semiconductor, optical or precision machinery processing, plastics, painting, and so on. Precision machining, plastics, painting, hospitals, environmental protection, testing laboratories and other production enterprises and scientific research departments.
Instrument Principle
Particle counter is a kind of instrument that utilizes the principle of light scattering to count dust particles. Light scattering is related to the size of the particles, the wavelength of the light wave, the refractive index of the particles and the absorption characteristics of the particles. However, in terms of scattered light intensity and particle size, there is a basic law, that is, the intensity of the scattered light particles with the increase in the surface area of the particles and increase. In this way, a certain amount of flow of dusty gas through a beam of light, so that the particles emit scattered light, through the condensing lens projected onto the photomultiplier tube, the light pulse into an electrical pulse, by the number of pulses to find the number of particles. According to the intensity of the scattered light and particle diameter of the particle as a function of the particle diameter. In this way, as long as the determination of the intensity of the scattered light can be deduced from the size of the particles, is the basic principle of the light scattering particle counter.
Instrument classification
1) According to the test principle: light scattering method test (white light, laser), microscope method test, weighing method test, DMA method test (particle size analyzer), inertial method test, diffusion method test, condensation nucleus method test (CNC) and so on.
2) According to the flow rate: small flow rate 0.1cfm (2.83L/min) large flow rate 1cfm (28.3L/min)
3) According to the shape, volume size: hand-held, desktop
4) According to the test channel: single-channel (only a particle size); dual-channel (test two particle sizes); multiple-channel (test a variety of particle sizes) 11. Powder Dynamics and Powder Flow Tester
Powder Flow Tester, using the patented powder homogenization pre-processing,
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By measuring powder dynamics, shear properties, and the overall characteristics of the powder including compression, permeability, and density, to give a highly repeatable powder flow properties of quantitative data. properties are measured to give quantitative data on the highly reproducible flow of the powder. In addition, a number of process related variables such as storage time, static electricity, agglomeration, particle segregation, particle crushing or moisture content during wet granulation can also be evaluated by the instrument, truly enabling quantitative characterization of powders in the real-world application environment.
Instrument Brief
Powder flow tester
Powder flow tester is used to measure the flow properties of powders, shear properties and overall powder properties including compressibility, permeability and density. Because of the different environments in which powders are processed and applied, it is possible to simulate these environments in the actual measurement of powders and to characterize the response of powders to specific environments. Powder Flow Testers have been used across the world in the UK, Europe, USA and Japan in a wide range of industries including pharmaceuticals, chemicals, food, cosmetics, toners, plastics, ceramics, metals, powder coatings and many more. Applications range from optimizing new formulations and improving production efficiency to quality control of raw materials, semi-finished products and final products, and have been introduced by DKSH since June 2011 to countries in Asia, including Taiwan, Thailand, Singapore, Malaysia and Australia. Test methods and applications? Kinetic Flow
1) Basic Flow is used to test the effects of: flow aids, wet granulation endpoints, moisture content, particle breakage/particle segregation, physical properties (particle size, shape, surface structure), static electricity
2) Aerated Properties is used to test: cohesion strength, low stress, gravity-guided flow, dosage/quality homogeneity, aerosolized dosing/dry powder inhalation, fluidization behavior. inhalants, fluidization behavior, mixing, particle segregation potential
3) Powder consolidation is used to understand the effects of: transportation, storage, processing, agglomeration
Shear properties1) Shear box: unconfined yield strength, flow function, cohesive strength, 1 ml shear box, hopper design
2) Wall friction;
Measurement of Friction between powder and material surface - hoppers, medium bulk containers, punches
Wall friction angle for hopper design
Overall Powder Properties1) Compressibility is used to study density variations induced by: transportation, storage (hoppers, small drums), processing (direct flaking, laminating, auger conveying)
2) Permeability is applicable to the following environments Powder behavior in the following environments: nebulized drug delivery/dry powder inhalation I, hopper flow, tablet compression, pneumatic transport
12. Interfacial Electrical Properties of Dispersed Systems and Microelectrophoresis Instrumentation
Microelectrophoresis Instrumentation can be used to determine the solid-liquid interfacial electrical properties (ζ-potentials) of dispersed system particles, and also can be used to measure the interfacial electrical properties of emulsion droplets, and also to determine the isoelectric point, and to study the It can also be used to determine the isoelectric point and study the mechanism of the interfacial reaction process. By determining the zeta potential of the powder and finding the isoelectric point from the pH-zeta potential relationship graph, it is an important method to recognize the electrical properties of the powder surface, and it is also an important means in the surface treatment of the powder. Compared with other instruments of the same type at home and abroad, it has significant superiority. It can be widely used in cosmetic, mineral processing, papermaking, medical and health care, building materials, ultrafine materials, environmental protection, marine chemistry and other industries, and is also one of the important teaching instruments for chemistry, chemical industry, medicine, building materials and other specialties.
Instrument Introduction
Chinese Name Microelectrophoresis Instrument Power Consumption < 150WPower Supply Voltage 220V 50HzApplicable Environment Shock-proof Platform Main Features
1) It can be used to determine the solid-liquid interfacial electrical properties (ζ-potential) of the particles in the dispersed system, and also be used for the measurement of the interfacial electrical properties of the droplets of emulsions, and also be used for the determination of isoelectric point and the study of the interfacial reaction process. It can also be used to determine the isoelectric point and study the mechanism of interfacial reaction process.
2) The instrument adopts a newly designed new type of simple electrophoresis cell with a 12.5px thick glass cup and electrodes built into the cell. The amount of sample used in the test is very small, only 0.5ml each time, easy to clean, easy to use and economical.
3) Adopting the well-designed electrode holder, which is closely matched with the electrophoresis cup
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, it forms a cup-shaped open electrophoresis device, and the electrode is made of silver, platinum and titanium wires, which is in stable working condition after surface treatment.
4) Well-made cross markers, placed in the electrophoresis cup and then placed on the three-dimensional platform, adjust the three-dimensional platform, see a clear image of the cross in the computer screen, you will find the determination of the position, there is no problem of static layer.
5) The electrophoresis instrument adopts semiconductor light-emitting near-field optical system, the power is only a few tens of microwatts, which will not affect the measurement environment and the measurement accuracy due to heat generation.
Technical parameters
1) Applicable temperature range: room temperature to 35 ℃, reading accuracy of 0.1 ℃
2) Measurement accuracy: systematic error within 5%
3) Apply to: 0.5 ~ 20um dispersion system
4) pH range: generally applied in the lower 2.0 ~ 12.0, can also be used in the 1.6 ~ 13.0 range, step by step. 13.0 range, step 0.1
5) Resolution: 4pixel/μm, domestic long-focal-length micro-optical system, working distance 7mm
6) Cup-type open electrophoresis device, supporting special electrode bracket
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