Refers to special properties (such as high temperature resistance, oil resistance, ozone resistance, aging resistance and high air tightness, etc.). ) and applied to special
Rubber for special occasions, such as nitrile rubber, butyl rubber, silicone rubber, fluororubber, etc. Although the amount of special rubber is small,
But it is indispensable in special applications.
nitrile rubber
NBR is made of butadiene and acrylonitrile by emulsion polymerization, and NBR is mainly made by emulsion polymerization at low temperature.
It has excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. Its disadvantage is poor low temperature resistance,
Poor ozone resistance, poor electrical performance and slightly lower elasticity. Nitrile rubber is mainly used to make oil-resistant rubber products.
butyl rubber
Butyl rubber is polymerized from isobutylene and a small amount of isoprene, which is mainly produced by slurry method. Low air permeability,
Excellent air tightness, good heat resistance, ozone resistance, aging resistance, chemical stability and electrical insulation.
Butyl rubber has the disadvantages of slow vulcanization speed and poor elasticity, strength and adhesion. The main uses of butyl rubber are
Manufacture all kinds of vehicle inner tubes, which are used to manufacture wire and cable sheaths, heat-resistant conveyor belts, steam hoses and so on.
viton
Fluorine rubber is a kind of synthetic rubber containing fluorine atoms, which has excellent heat resistance, oxidation resistance, oil resistance and drug resistance.
It is mainly used in aviation, chemical industry, petroleum, automobile and other industrial sectors, as sealing materials, medium-resistant materials and
Insulating material.
silicon rubber
Silicone rubber is composed of silicon and oxygen atoms, and its side chain is carbon-containing group. The largest amount is silicone rubber with vinyl side chains.
Glue is not only heat-resistant but also cold-resistant. Its service temperature is between-100 ~ 300℃, and it has excellent weather resistance and odor resistance.
Oxygen and good insulation. Disadvantages are low strength, poor tear resistance and poor wear resistance. Silicone rubber mainly
Used in aviation industry, electrical industry, food industry and medical industry.
polyurethane rubber
Polyurethane rubber is polymerized from polyester (or polyether) and diisocyanurate compound. Good wear resistance
Second, good elasticity, high hardness, oil resistance and solvent resistance. The disadvantage is poor thermal aging resistance. Polyurethane rubber is used in automobiles,
Widely used in shoemaking and machinery industry.