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Advantages and disadvantages of analysis of different types of rubber Send date: 2012-11-26 15:25
Viton (FPM)
Viton many different types, the fluorine-containing olefin copolymer applications most widely, including fluorine -26 consumption. Fluorine rubber heat-resistant, acid and alkali resistance, oil resistance, hot water and steam, compression set and a small, air-tightness, and weather-resistant.
Ozone resistance, burning self-extinguishing. Poor, cold resistance and good electrical insulation, Sec curing is required, shrinkage, and expensive.
EPDM rubber (EPDM)
Excellent ozone resistance, weather resistance and anti-aging properties, ranking first in the usual rubber. Electrical insulation, chemical resistance, and impact resilience are good, acid, small density, high fill the vulcanizing time is very slow, it is difficult with other rubbers with its self-adhesive and mutual adhesiveness poor, difficult adhesive to the processing of a great deal of difficulty.
The carbamates rubber (PUR)
Divided into millable pouring Thermoplastic three categories Continuity: tensile strength to engage in elongation, good flexibility, hardness range is narrow, high tear strength, abrasion resistance, heat resistance, low temperature anti-aging, ozone and oil resistance, dielectric properties of the polyurethane vulcanizate equivalent of butyl rubber easily hydrolyzed, steam, hot water, strong acid, has a decomposition equivalent of natural rubber, air tightness. The polyurethane rubber lagging and heat should be taken only to make low-speed rotation and thin products
Chlorosulfonated polyethylene rubber (CSM)
Resistance to ozone, weathering, abrasion resistance, chemical resistance, low temperature resistance and flame. Intolerant aromatic solvents, compression permanent deformation, low temperature brittleness.
Isoprene rubber (IR)
Back elastic Teyou, tear-resistant, wear-resistant, anti-rip increased water swelling and electrical insulation properties are excellent, compared with acid and alkali metal adhesion, the weatherability centered oil, ozone poor is almost identical with natural rubber
Natural rubber (NR)
Is a crystalline rubber, great self-complementary strength after carbon black reinforced, good mechanical strength properties, cold resistance around the song, good ventilation, multiple deformation less heat, vibration isolation is also better, But the impatience of concentrated sulfuric acid alkali resistance. Natural rubber in the total expansion of the non-polar solvent, oil resistance, solvent resistance are poor.
Nitrile rubber (NBR)
Has excellent oil resistance, rubber net after polysulfide rubber, acrylic rubber and fluorine rubber. With the higher content of acrylic clear, nitrile rubber Nitrile -18, Nitrile -26 and Nitrile -40 and other products can be divided into. The acrylonitrile content higher oil the better, but the cold is worse. Nitrile content higher oil resistance as possible, but the cold is worse. Superior heat resistance of the nitrile rubber, natural rubber, styrene butadiene rubber. Good air tightness and water resistance of nitrile rubber; but it intolerant ozone, and unsuitable for the insulating material
Acrylate rubber (ACM)
The high temperature oxidation resistance and oil resistance is excellent, stable performance, the lubricating oil of the sulfur, phosphorus, chlorine additives. Ozone resistance, and excellent airtightness and resistance to flexure. But poor cold tolerance, not water, the impatience of steam and organic and inorganic acids and bases. To severe expansion polyamino solution of methanol, ethylene glycol, a ketone, an ester, such as water-soluble
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