Rubber Hose Good wear resistance
Natural rubber NR
(Natural Rubber) is made of rubber latex and is a polymer of isoprene. It has good abrasion resistance, high elasticity, breaking strength and elongation. Aging in the air, Sticky, easy to expand and dissolve in mineral oil or gasoline, alkali resistant but not resistant to strong acid. Advantages: good elasticity, acid and alkali. Disadvantages: not weather, not resistant to oil (resistant to vegetable oil) is the production of tape, hose, rubber shoes and raw materials, and for the production of shock absorber parts, in the car brake oil, ethanol and other products used in the liquid hydroxide.
(Styrene Butadiene Copolymer) Butadiene and styrene copolymer, compared with natural rubber, uniform quality, less foreign body, with better wear resistance and aging resistance, but the mechanical strength is weak, with natural rubber Use. Advantages: low-cost non-oil resistant material, good water resistance, hardness of 70 or less with good elasticity, high hardness with poor compression, Disadvantages: do not recommend the use of strong acid, ozone, oil, oil and fat and large Part of the hydrocarbons. Widely used in the tire industry, footwear, cloth industry and conveyor belt industry.
Butyl rubber IIR
(Butyl Rubber) is a mixture of isobutylene and a small amount of isoprene, and the movement of the stereoscopic molecules of methylation is less than that of other polymers, so that the gas permeability is small and the resistance to heat, sunlight and ozone is large, Electrical insulation is good; the resistance of the polar agent, the general use of temperature range of -54-110 ° C. Advantages: most of the general gas is impermeable to the sun and smelly with good resistance can be exposed to Animal or vegetable oil or gasifiable chemicals. Disadvantages: It is not recommended to use the inner tire, bag, rubber paste paper, window frame rubber, steam hose, heat-resistant conveyor belt for automobile tires with petroleum solvent, kerosene and aromatic hydrogen.
Hydrogenated Butteratin HNBR
(Hydrogenate Nitrile) Hydrogenated Butteron Gel for Dingqing gum after hydrogenation to remove part of the double chain, after hydrogenation of its temperature resistance, weatherability than the general increase in a lot of NBR, oil resistance and general Dingqing plastic similar. General use temperature range of -25 ~ 150 ℃. Advantages: better than Dingqing plastic wear resistance, with excellent resistance to corrosion, tensile, tear resistance and compression characteristics
In the ozone and other atmospheric conditions with good resistance, generally applicable to laundry or dishwashing cleaning agent. Disadvantages: It is not recommended for use in alcohols, esters or aromatic solutions in the air-conditioning refrigeration industry, widely used in environmentally friendly refrigerant R134a system seals.
Automotive engine system seals.
Ethylene propylene rubber is made from copolymerized ethylene and propylene, so heat resistance, aging resistance, ozone resistance and stability are excellent, but can not be sulfur and sulfur. To solve this problem, in EP The main chain into a small amount of double-chain of the third component and can add sulfur as EPDM, the general use of the temperature of -50 ~ 150 ° C. Polar solvents such as alcohol, ketones and other excellent resistance: a good resistance And anti-ozone, with excellent water resistance and anti-character, can use alcohol and ketones, high temperature steam, the gas has a good impermeability. Disadvantages: Not recommended for food use or exposure to aromatic hydrogen. Seals or parts of sanitary ware for high temperature water vapor. Brake (brake) system in the rubber parts. A seal in a radiator (car water tank).