Home > Products > rubber > Ethylene Propylene Diene Monomer Rubber EPDM rubber shore 40A-90A diffirent color bl
Ethylene Propylene Diene Monomer Rubber EPDM rubber shore 40A-90A diffirent color bl
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Product Details
Place of Origin | Liaoning, China | Brand Name | DLBON | |
Model Number | EPDM |
Product Description
EPDM is ethylene, propylene and the conjugate dienes terpolymer, EPDM's main feature is its superior resistance to oxidation and ozone resistance and erosion resistance ability.Because of the epdm belongs to the family of polyolefin, it has excellent curing characteristics.Of all the rubber, EPDM has the lowest proportion.It can absorb a large number of filler and oil and impact properties.So can make cheap rubber compounds.
Ageing resistance, electric insulation performance and ozone resistance.Ethylene propylene rubber can be a large number of oil filled and filled with carbon black, product prices low, ethylene propylene rubber chemical stability is good, wear resistance, elasticity and oil resistance and styrene butadiene rubber.Ethylene propylene rubber USES is very wide, can be used as a tire side, strip and tube, and auto parts, still can make electrical wiring, cable sheathing, high pressure and ultrahigh pressure of insulating material.Can also manufacture and shoe, sanitary products and other light products.The performance of ethylene propylene rubber and improvement:
1, low density and high filling
Ethylene propylene rubber density is low a rubber, its density is 0.87.Combined with the filling agent, can be added a large number of oil charge and thus can reduce the cost of rubber products, made up for the shortcoming of ethylene propylene rubber raw rubber prices high, and for halls, value of ethylene propylene rubber, high fill after physical mechanical energy to reduce much.
2, aging resistance,
Ethylene propylene rubber has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor, color stability, electronic, oily and normal temperature liquid filling.Ethylene propylene rubber products under 120 ℃ can be use for a long time, under the 150-200 ℃ can be temporary or intermittent use.Join the suitable stabilizer can improve the temperature.With peroxide crosslinked epdm can be used in harsh conditions.Epdm in 50 PPHM, drawing 30% of ozone concentration condition, can reach more than 150 h not cracked.
3, corrosion resistance,
Due to the lack of polarity ethylene propylene rubber low unsaturation, polarity of various chemicals such as alcohol, acid, alkali, oxidant, refrigerant, detergents, animal and plant oil, ketone and fat has good resistance to patience;But the fat and aromatic solvents (such as gasoline, benzene, etc.) and poor stability of mineral oil.Under the action of concentrated acid long-term performance will decline.In ISO/TO 7620 collected nearly 400 kinds of corrosive gas and liquid chemical materials, the role of various rubber performance and the grade 1 TO grade 4 TO express the degree of the role of corrosive chemicals affect the performance of rubber:
Grade swelling rate/volume % lower hardness value impact on performance
1 < < 10 10 mild or no
2 10-20 < 20 smaller
3 30-60 < 30 medium
4 > > 60 30 serious
4, water vapor resistance performance
Ethylene propylene rubber has excellent water resistance and estimate is superior to its heat resistance.In the 230 ℃ heating steam, nearly 230 h after no change in appearance.The fluorine rubber, silicone rubber, fluorine silicone rubber, butyl rubber, nitrile rubber, natural rubber under the same conditions, significant degradation occur after a short time appearance.
5, a hot water resistance
Ethylene propylene rubber too hot water resistance is good, but is closely related to all the vulcanization system.For sulfide two morphine TMTD, ethylene propylene rubber vulcanization system, in 125 ℃ hot water for 15 months later, the mechanical properties change little, volume expansion rate of only 0.3%.
6, electronic
Ethylene propylene rubber has excellent electric insulation performance and the corona resistance, electric properties better than or close to the styrene butadiene rubber, chlorosulfonated polyethylene, polyethylene and crosslinked polyethylene.
7, elastic
Because of ethylene-propylene rubber non-polar substituents in molecular structure, molecular cohesive energy is low, the molecular chain can maintain flexibility in a wider range, after natural rubber and butadiene rubber, and can remain in the low temperature.
8, adhesion,
Ethylene propylene rubber due to the lack of molecular structure of reactive group, cohesive energy is low, plus the rubber is easy to spray frost, self-adhesive and mutual viscosity is very poor.
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