- Product Details
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Quick Details
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Model Number:
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CY56
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Thickness:
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0.1---40MM
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Size:
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1220*2440mm(4*8foot)
Quick Details
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Processing Service:
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Cutting, Moulding
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Place of Origin:
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XIAMEN
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Brand Name:
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CENYU
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Model Number:
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CY56
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Thickness:
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0.1---40MM
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Size:
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1220*2440mm(4*8foot)
Products Description
Certifications
Ethylene propylene rubber is synthesized using ethylene and propylene as the main raw materials
Outstanding aging resistance, electrical insulation performance, and ozone resistance. Ethylene propylene rubber can be filled with a large amount of oil and carbon black, and its product price is relatively low. Ethylene propylene rubber has good chemical stability, and its wear resistance, elasticity, and oil resistance are similar to those of butadiene styrene rubber. Ethylene propylene rubber has a wide range of applications, including being used as tire sidewalls, rubber strips, inner tubes, and automotive components. It can also be used as wire and cable sheathing, as well as high-voltage and ultra-high voltage insulation materials. It can also manufacture light colored products such as shoes and sanitary products. Performance and improvement of ethylene propylene rubber:
1. Low density and high filling ability
The density of ethylene propylene rubber is a lower type of rubber, with a density of 0.87. In addition, a large amount of oil can be added and fillers can be added, which can reduce the cost of rubber products, make up for the high price of raw EPDM rubber, and for high Mooney value EPDM rubber, the reduction in physical and mechanical energy after high filling is not significant.
2. Aging resistance
Ethylene propylene rubber has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical performance, oil filling ability, and room temperature fluidity. Ethylene propylene rubber products can be used for a long time at 120 ℃, and can be used briefly or intermittently at 150-200 ℃. Adding appropriate anti-aging agents can increase its usage temperature. EPDM rubber crosslinked with peroxide can be used under harsh conditions. Under the conditions of ozone concentration of 50 pphm and 30% stretching, EPDM rubber can withstand over 150 hours without cracking.
3. Corrosion resistance
Due to the lack of polarity and low unsaturation of ethylene propylene rubber, it has good resistance to various polar chemicals such as alcohols, acids, bases, oxidants, refrigerants, detergents, animal and vegetable oils, ketones, and fats; But it has poor stability in fatty and aromatic solvents (such as gasoline, benzene, etc.) and mineral oils. Under the long-term action of concentrated acid, the performance will also decrease. ISO/TO 7620 collects data on the effects of nearly 400 corrosive gaseous and liquid chemicals on various rubber properties, and specifies levels 1-4 to indicate their degree of action. The impact of corrosive chemicals on rubber properties is:
The effect of grade volume swelling rate/% hardness reduction on performance
1<10<10 Slight or none
2 10-20<20 smaller
3 30-60<30 Moderate
4>60>30 Severe
4. Water vapor resistance performance
Ethylene propylene rubber has excellent water vapor resistance and is estimated to be superior to its heat resistance. After nearly 100 hours in superheated steam at 230 ℃, there was no change in appearance. However, under the same conditions, fluororubber, silicone rubber, fluorosilicone rubber, butyl rubber, nitrile rubber, and natural rubber undergo significant deterioration in appearance for a short period of time.
5. Resistance to hot water
Ethylene propylene rubber also has good resistance to hot water, but it is closely related to all vulcanization systems. The mechanical properties of ethylene propylene rubber, which is vulcanized with morpholine disulfide and TMTD as the vulcanization system, show little change after soaking in 125 ℃ superheated water for 15 months, with a volume expansion rate of only 0.3%.
6. Electrical performance
Ethylene propylene rubber has excellent electrical insulation performance and corona resistance, and its electrical performance is superior to or close to that of butadiene styrene rubber, chlorosulfonated polyethylene, polyethylene, and cross-linked polyethylene.
7. Elasticity
Due to the lack of polar substituents in the molecular structure of ethylene propylene rubber, the intramolecular polymerization energy is low, and the molecular chains can maintain flexibility over a wide range, second only to natural rubber and butadiene rubber, and can still be maintained at low temperatures.
8. Adhesive properties
Due to the lack of active groups in the molecular structure, ethylene propylene rubber has low cohesive energy, and the rubber material is prone to frost spraying, resulting in poor self-adhesion and mutual adhesion.
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