Tpu film manufacturers remind you:
1. TPEE
Thermoplastic polyester elastomer, referred to as TPEE or COPE, contains PBT (polybutylene phthalate) Alcohol ester) polyester hard segment (crystalline phase) aliphatic polyester or polyether (amorphous phase) soft segment linear block polymer TPEE is a high-performance engineering grade elastomer with high mechanical strength, elasticity and resistance. It has the advantages of impact, creep resistance, cold resistance, bending fatigue resistance, oil resistance, chemical solvent corrosion resistance, etc. It has good processability and can be filled, reinforced and alloyed to modify automobile parts, hydraulic hoses, cables and wires, electrical appliances, and industry It is widely used in the fields of products, stationery and sports supplies, and physical materials.
Physical and chemical properties of TPEE
●The mechanical properties can be adjusted by adjusting the ratio of soft and hard segments. The hardness of TPEE changes to Shore D32D80. Its elastic strength is between rubber and rubber. Compared with its thermoplastic elastomer (TPE), among plastics, the modulus ratio of TPEE under low strain conditions is the same. The high modulus of TPE with the same hardness is an important design condition. Use the cross-sectional area of ??TPEE shrink products to reduce the amount of material
●Tensile strength and Compared with TPEE, polyurethane elastomer (TPU) has higher compression modulus and tensile modulus. Use the same hardness TPEETPU to make the same parts. The former can bear more load at room temperature. TPEE has high bending modulus and is suitable for making cantilever beams or torque-type parts. It is especially suitable for making high-temperature parts. TPEE The low-temperature compliance and low-temperature notched impact strength are better than those of TPE. The wear resistance is comparable to that of TPU. The combination of TPEE's excellent fatigue resistance and high elasticity makes the material ideal for cyclic load use. The material is suitable for making gears, rubber rollers, and flexible couplings. Sections, belts, etc.
●Heat resistance TPEE has excellent heat resistance. The higher the hardness, the better the heat resistance. TPEE's use temperature is not high and it can adapt to the baking paint temperature of the automobile production line (150-160℃) and high temperature mechanical properties. The tensile strength of TPEE when used at 120°C is much higher than that of TPU. TPEE has color and low-temperature resistance. The brittle point of TPEE is lower than -70°C and the lower the hardness, the higher the cold resistance. TPEE has a balanced performance at high and low temperatures during use at -40°C. The working temperature range is very wide -70-200℃
●Chemical media resistance TPEE is extremely oil-resistant and can withstand several polar liquid media (acids, alkali, amines and glycol compounds) at room temperature. The chemical capacity of TPEE increases with the increase of its hardness. The anti-swelling performance of solvents, fuels and gases of TPEE is only 1/3-1/300 of oil-resistant rubbers such as neoprene, chlorosulfonated polyethylene, nitrile rubber and other oil-resistant rubbers compared with fuel permeability.
● Weather resistance and chemical resistance TPEE has excellent stability against various external conditions such as water mist, ozone, outdoor air, etc. Thermoplastic elastomer (TPE) degrades under the action of ultraviolet light (mainly degraded by 310nm ultraviolet light) When used outdoors or when products are exposed to sunlight, UV protection additives should be added, including carbon black, various pigments or their shielding materials, phenolic antioxidants, benzotriazole type UV shielding agents, and can effectively protect against UV light.
●High elasticity TPEE material is used in springs to ensure that the spring has a long service life and can help trains start, accelerate, decelerate and stop smoothly. Metal springs may rust, deteriorate due to environmental conditions, or cause elastic rupture loss, etc. Compared with rubber materials, it has better reusability and maintains elasticity
●Processability TPEE has excellent melt stability and is filled with thermoplastics, so it has good processability. It can be processed by various thermoplastic processing techniques such as extrusion, injection, and blow molding. , rotational molding and melt casting, etc. The melt viscosity of TPEE melt at low shear rates is shear rate sensitive and the melt viscosity at high shear rates decreases with the increase of shear rate. Because the melt temperature of TPEE is very sensitive within the range of 10℃, its melt viscosity The temperature should be strictly controlled if the type changes from several times to dozens of times.
2. TPU
Polyurethane thermoplastic elastomer (TPU) is called polyurethane rubber, which belongs to the chain-like chain containing relatively urethane. The group (-NHCOO-) elastic polymer material is made of oligomerized diisocyanate and hydroxyl-terminated polyether or polyester polyol and low-amount glycol chain extender. Polyurethane elastomer block polymer is generally made of The flexible chain structure of polyhydric alcohol, the soft segment of diisocyanate and the chain extender constitute the hard segment. The hard segments are alternately arranged in a sequenced repeating structure. The crystalline units endow the elastomer with high strength, rigidity, melting point and other properties; the soft segments are arranged in a sequentially curled shape and shape. Give the elastomer flexibility, elasticity, hygroscopicity and low temperature resistance. Polyurethane elastomer chain content, urethane group, ether, ester and urea group, strong hydrogen bonding, polyurethane elastomers with the same properties, and polyurethane elastomer varieties. Some structural characteristics make polyurethane
The elastomer has excellent wear resistance, toughness and high elasticity and is easily compatible with its polymer () Polyurethane thermoplastic elastomer properties
(1) TPU shape and combination, wide variety of mixing and casting types The thermoplastic structure is more complex and has different properties. Polyester TPU has high mechanical properties and poor oil resistance and water resistance; polyether TPU has better low temperature resistance and water resistance than polyester TPU, but has better mechanical properties than polyester. Different types are generally said to have good comprehensive physical properties, and their performance is between general rubber thermoplastics, TPU-like mixing type, and cast thermoplastic type
(2) TPU block polymer hard The ratio of segment and soft segment groups determines the performance of TPU. The hard segment modulus and hardness tear strength have special functions. The soft segment mainly affects the elasticity and low-temperature performance of the product. TPU has excellent softness, elasticity, softness, hardness, flexibility, rigidity, or can absorb water. The hydrophilic type repels water. It is hydrophobic and maintains high elasticity within a wide hardness range (Shore A10-D75) with the same hardness and higher load-bearing capacity than its elastomer
(3) TPU has excellent wear resistance and its wear-resistant rubber 2-10 times; elongation at break is as high as 600%~800%, 300% higher than rubber
(4) TPU impact strength is relatively high, density is 1.14-1.22g/cm3, tensile strength is 30-65MPa, Ester TPU is slightly higher than ether TPU; its thermal performance is higher, and its long-term use temperature is -50-90℃, which shows its good softness and elasticity.
(5) TPU chemical resistance, oil resistance, radiation resistance , oxygen resistance, ozone resistance, fatigue resistance and vibration resistance, good heat resistance, relatively high molding processing cost and low
(6) Compared with metal materials, TPU products are light in weight and low in noise. , wear resistance, low processing costs and corrosion resistance; compared with plastic, TPU has the advantages of brittleness, elastic memory, wear resistance, etc.; compared with rubber, TPU has the advantages of wear resistance, cutting resistance, tear resistance, and high load-bearing capacity , potting, casting, wide range of hardness, etc.
(7) TPU has poor weather resistance and is prone to degradation due to sunlight during processing. Antioxidants and light stabilizers should be added
3. TPV
Thermoplastic vulcanizate (English Thermoplastic Vulcanizate) is abbreviated as TPV. Thermoplastic vulcanized rubber is abbreviated as Thermoplastic Rubber (English Thermoplastic Rubber) is abbreviated as TPR. The name is easily confused with its type. TPE is generally called thermoplastic elastomer, especially styrene. Elastomers currently at least seem to have been named "TPR". TPR refers to SBS, SEBS and other styrenic elastomer base materials, thermoplastic elastomers and styrenic elastomers. Consumption in the field of civil and terminal consumer goods
The name of thermoplastic vulcanized rubber To be more specific, we should add the word "dy" to thermoplastic vulcanized rubber (English Thermoplastic Dyamic Vulcanizate) to more specifically describe the production process of thermoplastic vulcanized rubber---the vulcanized process refers to the melting and mixing process of rubber thermoplastic to make rubber vulcanized. Rubber vulcanization is the same as that of thermoplastics. The vulcanized rubber is mixed as a dispersed phase cloth. The thermoplastic continuous phase is mixed with the corresponding thermoplastic static vulcanized rubber. The finger rubber is vulcanized first according to the traditional grinding equipment. The vulcanized rubber grinding powder is mixed with the molten thermoplastic. The theoretical species can produce TPV with excellent performance. It is currently in the laboratory stage.
Add some machine fillers to reduce costs or improve certain properties
Specific properties
1. Good elasticity, compression deformation resistance, environmental resistance, and chemical resistance are comparable to those of EPDM rubber. Its oil resistance and solvent resistance are comparable to general-purpose chloroprene
2. It has a wide application temperature range (-60-150℃), a wide range of soft and hardness applications (25A-54D), and the advantage of easy dyeing improves product design. Degree of freedom
3. Excellent processing performance: The processing of thermoplastics such as injection and extrusion is efficient and simple. It requires additional equipment with high fluidity and shrinkage rate
4. Green and environmentally friendly recycling Performance will be significantly reduced after use and repeated use. Comply with EU environmental protection requirements
5. Light specific gravity (0.90-0.97), uniform appearance and quality, high-end surface grade
Based on performance characteristics, TPV has a wide range of application fields and traditional Compared with rubber materials, its TPE elastomer (including TPR\SBS, SEBS, TPU, etc.) materials or PVC and other plastic materials, their comprehensive performance is comprehensive.
Products with certain substitution advantages provide new options for product innovation, increase product added value, and improve competitiveness
A. Hytrel has been confirmed as the best material in the city inside and outside the automotive airbag exhibition
B. The inner and outer layers of the hydraulic hose are made of Hytrel extruder screw, gradient transition screw, equal pitch, high compression ratio (2.7/1~4/1)
C. Industrial wheel wear resistance , Light weight
D. Flexible coupling: wear-resistant, high load and high torque heat
E. Inner layer of fire hose: resistant to hydrolysis, mold resistance, fatigue resistance All are excellent
F. Cross-country ski boot soles: good low-temperature flexibility and fatigue resistance
G. Automobile dust cover
High-end dust cover ( The rack dust cover) uses EPDM TPV (Santoprene) and the high-end dust cover (CVJ) uses TPEE (Hytrel). Jin Huanyu Company has used imported equipment and has been mass-produced
Hardness 47D grade TPEE Dazhong Delphi ( Delph) dust cover force performance requirements production process: injection blow type, equipment and TPV dust cover are the same p>
Currently, the rubber industry uses TPEE for automobile dust covers. According to DuPont, Shuehiro Company switched from traditional silicone rubber to Hytrel to make remote control buttons to shorten the production cycle and enhance design flexibility, which is ideal for technology promotion. Add
This kind of question is meaningless
I suggest you go and check the information yourself