Natural rubber (Natural Rubber)

Natural rubber (Natural Rubber) made of rubber tree latex is collected, isoprene polymer. With wear resistance, high elasticity, tensile strength and elongation as well. Aging in air, the heat variable viscosity, easy expansion in mineral oil or gasoline and dissolved, but not resistant to strong acid and alkali.

Advantages: good elasticity, acid and alkali resistance.

Disadvantages: not weather, not oil resistant (resistant to vegetable oil) is the production of adhesive tape, rubber hose, rubber overshoes of raw materials, and is suitable for the production of shock absorber parts, brake products using oil, ethanol with hydroxide liquid in the automobile.

Ding Benjiao SBR

(Styrene Butadiene Copolyme) butadiene and styrene copolymer, comparison, and natural rubber of uniform quality, less foreign body, has better wear resistance and aging resistance, but the mechanical strength is weak, can use synthetic and natural rubber mixing. Advantages: non oil resistant material with low cost, good water resistance, hardness below 70 with good elasticity, high hardness out disadvantages of poor compressibility,: do not recommend the use of strong acid, ozone, oil, oil esters and fatty and most of the hydrocarbon compounds. Widely used in tire industry, shoes, cloth and conveyor belt industry etc..

Ding Ji rubber IIR

(Butyl Rubber) to isobutylene and isoprene polymerized by a small amount, steric hindrance of molecular motion of the polymer methyl than other less, so the gas permeability is less, resistance to heat, sunlight, ozone, electrical insulation good; for polar fluxing agent resistance, generally the use temperature range of -54-110 DEG C advantages. For most of the general gas out: impermeability, resistance to sunlight and smell good to be exposed to animal or vegetable oil or chemical gasifiable materials. Disadvantages: not recommended with petroleum solvent glue, kerosene and aromatic hydrogen also used for automobile tire inner tubes, leather, rubber paste paper, window frame, steam hose, rubber heat resistant conveyor belt etc.

Hydrogenated nitrile rubber HNBR

(Hydrogenate Nitrile) hydrogenated NBR rubber parts for double chain removal via the hydrogenated NBR rubber, the hydrogenated and its temperature resistance, weatherability than general NBR improved a lot, oil resistance and similar general NBR rubber. The general use of the temperature range of -25~150 DEG C. Advantages: abrasion resistance better than NBR rubber has excellent corrosion resistance, tensile, tear, and compression properties

Good resistance to ozone and other atmospheric conditions, cleaning agent is generally applicable to washing or washing dishes. Disadvantages: not recommended for use in alcohols, esters or solution aromatic in air conditioning and refrigeration industry, widely used for the seal of refrigerant R134a in the system.

The car engine system seals.

Ethylene propylene rubber EPDM (Ethylene propylene Rubber) from ethylene and propylene is polymerized, therefore the heat resistance, aging resistance, ozone resistance, stability are very good, but not sulfur and sulfur. In order to solve this problem, in the main chain of EP into a small amount of third components of double chain and can add sulfur into EPDM, the general use of a temperature of -50~150. The polar solvents such as alcohols, ketones and other excellent advantages: good resistance against climate change and ozone resistance, water resistance and anti chemical material with excellent, can use the alcohols and ketones, high-temperature steam, impermeability to gases with good. Disadvantages: not recommended for food use or be exposed to aromatic hydrogen. High temperature water vapor environment seal seal or parts of bathroom. Brake (brake) system of rubber parts. Radiator (tank seal in the car).

Ding Qingjiao NBR

(Nitrile Rubber) composed of acrylonitrile and butadiene copolymerization, acrylonitrile content by 18%~50%, acrylonitrile content higher, better resistance to petrochemical oil hydrocarbon fuel oil, but the low temperature performance variation, the general use of the temperature range of -25~100 DEG C. Ding Qingjiao is currently the rubber O - ring seal and the most commonly used one of the advantages of: oil resistant, good resistance to water, characteristics of anti solvent and anti high pressure oil

With good compression, abrasion resistance and elongation stress.

Disadvantages: not suitable for polar solvents, such as ketones, nitro hydrocarbons, ozone, MEK and chloroform.? for the production of the fuel tank, lubricating oil tank and oil system used in the hydraulic oil, gasoline, water, silicon oil, two ester lubricants and other fluid medium rubber parts, especially the parts can be said to be sealed. At present, the most widely uses, the lowest cost of rubber seals

Chloroprene rubber CR

(Neoprene, Polychloroprene) by chlorine butene monomer polymerized rubber elasticity after curing. The wear resistance of the good, not afraid of sunlight directly irradiating the weathering performance, have particularly good, not afraid of intense distortion, not afraid of refrigerant, resistance, resistance to dilute acid, silicon ester lubricants, but not resistant to phosphoric acid ester type hydraulic oil. Easy crystallization, in low temperature hardening, storage stability is poor, the low aniline point of mineral oil in large expansion quantity. The general use of the temperature range of -50~150 DEG C. Advantages: good elasticity and good compression deformation, formula not containing sulphur is therefore very easy to make. The properties of anti animal and vegetable oil, not because the neutral fat, oil, chemicals, various oil, solvent and the impact of property, anti combustion properties

Disadvantages: not recommended for seal chemical use strong acid, nitro hydrocarbons, esters, ketones compounds in chloroform and resistance of R12 refrigerant, appliances or seal on the rubber parts. Suitable for making various kinds of direct contact with the atmosphere, sunlight, ozone parts. Applicable to all kinds of fire resistance, chemical corrosion resistant rubber products.

Chlorosulfonated polyethylene rubber CSM

(Hypalon, Polyethylene) synthesis of chlorosulfonated polyethylene rubber for the DuPont Co patents. Heat resistance, weather resistance, ozone resistance are good; acid resistance is also good, commonly used in the oxidation resistance of the drug (nitrate