With the rapid development of modern industrial technology, rubber and plastic products more and more extensive areas of application, the environmental conditions experienced are increasingly complex and diverse. The product's reasonable environmental conditions, the provisions of the product of the correct choice of environmental protection measures to ensure that the product is not damaged during transportation in the storage process safe and reliable.
The concentration of ozone in the atmosphere is very little rubber cracking, the main factor of ozone, strengthen the aging test chamber simulation atmosphere, the study of the rules of rubber, rapid identification and rubber anti-aging performance evaluation of ozone to ozone conditions and anti-ozone, ozone protectant efficacy of the method, and then to take effective anti-aging measures to improve the service life of rubber products. Constant temperature and humidity machine xenon lamp aging test chamber ozone aging tester equipment for the use of ozone generator, high-voltage power supply frequency, quartz glass tube electrode, in the stability of the ozone concentration caused by mixing with a certain amount of air into the chamber, the ultraviolet ozone concentration detector using a switch to deal with the detected ozone concentration without disconnecting the ozone generator control system back to the ozone generator control system to set up a control system on the basis of ozone ozone to ozone Chamber to maintain a proper centralized effective control of the value of the event. The control system uses a PLC programmable controller. Another heating and humidifying system is used by the work to meet all the conditions of temperature and humidity testing.
Ozone aging test chamber can be used for rubber products, such as vulcanized rubber, thermoplastic rubber, cable insulation and sheathing and other products, in static or dynamic tensile deformation tensile continuous or intermittent dynamic tensile and static tensile deformation alternately, in the absence of light irradiation contained in a closed air and ozone constant temperature chamber, the reporter from the surface of the test samples of the crack or other properties of samples occurring at the time of the predetermined degree of change, in order to assess the resistance to ozone. The degree of change to assess ozone-resistant rubber aging.
Static tensile test
Standard requirements in two samples captured in a special fixture, select the tensile elongation, generally selected 20%, in a rotating sample holder mounting fixtures, the sample holder rotating speed (20-25) mm / s, temperature (40 ± 2) ℃, relative humidity is less than 65%, and the desired ozone concentration test. The samples were checked for cracking after a specified time. Select the general ozone concentration (50 ± 5) × 10-8.
Dynamic tensile test
Standard automatically retractable specimen fixture and tensile reset, 0.5 ± 0.025Hz, two people in the tensile specimen-specific fixtures induced by the frequency of the tensile specimen from 0 to a relatively large elongation cycle of the elongation of tensile specimens, the device is mounted on the rotating sample holders, the sample holders rotate at a speed (20-25 ) mm / s between the temperature (40 ± 2) ℃, relative humidity of less than 65%, as needed to cycle the ozone concentration and tensile fixture and rotary reset with the test sample holder together. After the specified time, the samples were checked for cracking. Select the general ozone concentration (50 ± 5) × 10-8.
Dynamic tensile test is divided into continuous and discontinuous dynamic stretching dynamic tension.
Structural design
Ozone aging test box high-quality materials, shell surface spray treatment, beautiful and smooth made. Color coordination, smooth lines. Banner design work is sealed in the absence of direct sunlight, aging test specimens can be placed in space, controllable constant temperature test ± 2 ℃, high-quality stainless steel plate. Indoor sample racks, fixtures and other accessories using conduit ozone decomposition difficulties, the effect of ozone content in stainless steel, aluminum and other materials. The height, frequency and amplitude of the pulling force of the sample holder can be adjusted. The sample holder can be rotated 360 degrees with adjustable speed.
The door position is set in the chamber, observing the change of the sample with a reasonably transparent window. Multi-layer hollow glass observation window, transparent, heat-resistant, anti-freeze, etc. is not easy to produce steam.
The liner between the equipment and the high-density laminated glass fiber wool filled frame shell does not ensure that the temperature conductive temperature fluctuations caused by excessive temperature fluctuations in the test sample temperature has remained constant.
Fan motor mixing, stainless steel multi-bladed impeller high temperature used equipment, long axis to achieve convection vertical diffusion cycle, the strength and stability of temperature uniformity in the laboratory.
The double seal between the cabinet door and the cabinet uses high tension temperature to ensure a closed test section. There is no reaction to the same door handle for simpler operation. On the left side of the dialog box set a reasonable position for one or more test holes, test power lines or external signal lines, hole diameter or number of holes are used to indicate the arrangement.
The bottom of the machine can be fixed with the installation of good quality PU wheels, the machine can be easily moved to the specified position with fixed casters at a later stage.
Heating and cooling system
1. using high-speed infrared heating wire nickel alloy;
2. completely independent system, ozone does not affect the low temperature test and aging test;
3. temperature controlled by microcomputer algorithms of the output power, to achieve high precision, high efficiency power supply efficiency;
4. Compressor: closed tecan set;
4.
5. Cooling method: air-cooled;
Alternating salt spray corrosion chamber 6. Refrigerant: R22;
7. The whole system, the pipeline is pressurized for 48 hours to ventilate and pick up the leakage test;
8. Heating and cooling system is completely independent;
9. Refrigerant in the copper spiral;
10. Side-slope evaporator;
11. Drying filter, refrigerant in a copper spiral;
12. 11. filter drier, window for refrigerant flow, repair valves, oil separator, solenoid valve, liquid cylinder original.
Control system
Temperature and humidity control equipment, as well as from the PLC programmable controller part of the programming is simple, stable temperature and humidity control, large screen touch screen display and operation concentration concentration. Such as the main circuit breaker, AC contactor electrical equipment parts, the use of small relays,
Testing equipment required for the time controller to control the time, simple operation. When the equipment is running, set the time, automatically stop the test, and automatically enter the cooling state of balance.