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Rubber is widely used in many fields such as our daily life and industry because of its good reversibility and high elasticity.Generally speaking, rubber is divided into two categories: natural rubber and synthetic rubber. Below, Zebang Technology introduces some commonly used rubber types and properties. Friends in need can store them for future use. These rubber Demai industrial fluid hose series , Offshore oil pipe series, and dredging pipe series have applications.1.Natural rubber (NR) is mainly rubber hydrocarbon (polyisoprene), containing a small amount of protein, water, resin acid, sugar and inorganic salt.High elasticity, high elongation strength, excellent tear resistance and electrical insulation, good wear resistance and drought resistance, good processability, easy to bond with other materials, and is superior to most synthetic rubbers in terms of comprehensive performance.The disadvantages are poor oxygen and ozone resistance, easy aging and deterioration; poor oil and solvent resistance, low acid and alkali corrosion resistance; low heat resistance.Operating temperature range: about -60°C ~ +80°C.Making tires, rubber shoes, rubber hoses, tapes, insulation layers and sheaths for wires and cables, and other general products.Especially suitable for the manufacture of torsional vibration eliminators, engine shock absorbers, machine supports, rubber-metal suspension components, diaphragms, and molded products.2.Styrene-butadiene rubber (SBR) is a copolymer of butadiene and styrene.Its performance is close to that of natural rubber. It is a general-purpose synthetic rubber with a large output at present. It is characterized by wear resistance, aging resistance and heat resistance that exceed natural rubber, and its texture is more uniform than natural rubber.The disadvantages are: low elasticity, poor flex and tear resistance; poor processing performance, especially poor self-adhesiveness and low raw rubber strength.Operating temperature range: about -50°C ~ +100°C.It is mainly used to replace natural rubber to make tires, rubber sheets, rubber hoses, rubber shoes and other general products.3.Butadiene rubber (BR) is a cis-structured rubber polymerized from butadiene.The advantages are: excellent elasticity and wear resistance, good aging resistance, excellent low temperature resistance, low calorific value under dynamic load, and easy metal bonding.The disadvantages are low strength, poor tear resistance, poor processing performance and self-adhesiveness.Operating temperature range: about -60°C ~ +100°C.Generally, it is used together with natural rubber or styrene-butadiene rubber to make tire treads, conveyor belts and special cold-resistant products.4.Neoprene (CR) is a polymer formed by emulsion polymerization of chloroprene as a monomer.This rubber molecule contains chlorine atoms, so compared with other general-purpose rubbers: it has excellent anti-oxidation, anti-ozone, non-flammable, self-extinguishing after fire, oil resistance, solvent resistance, acid and alkali resistance, and aging and gas resistance. Good tightness and other advantages; its physical and mechanical properties are better than natural rubber, so it can be used as general-purpose rubber or special rubber.The main disadvantages are poor cold resistance, large specific gravity, high relative cost, poor electrical insulation, and easy sticking, scorching and mold sticking during processing.In addition, raw rubber has poor stability and is not easy to store.Operating temperature range: about -45°C ~ +100°C.Mainly used in the manufacture of cable sheaths and various protective covers and protective covers that require high ozone resistance and aging resistance; hoses, tapes and chemical linings that are resistant to oil and chemical corrosion; flame-resistant rubber products for underground mining, and various moldings Products, sealing rings, gaskets, adhesives, etc.5.Nitrile rubber (NBR) is a copolymer of butadiene and acrylonitrile.It is characterized by excellent resistance to gasoline and aliphatic hydrocarbon oils, second only to polysulfide rubber, acrylic ester and fluororubber, and better than other general-purpose rubbers.Good heat resistance, good air tightness, wear resistance and water resistance, etc., and strong adhesion.The disadvantages are poor cold resistance and ozone resistance, low strength and elasticity, poor acid resistance, poor electrical insulation, and poor resistance to polar solvents.Operating temperature range: about -30°C ~ +100°C.Mainly used in the manufacture of various oil-resistant products, such as rubber hoses, sealing products, etc.6.Hydrogenated nitrile rubber (HNBR) is a copolymer of butadiene and acrylonitrile.It is obtained by fully or partially hydrogenating the double bonds in butadiene of NBR.It is characterized by high mechanical strength and wear resistance, better heat resistance than NBR when crosslinked with peroxide, and other properties are the same as NBR.The disadvantage is that the price is higher.Operating temperature range: about -30°C ~ +150°C.Mainly used for oil-resistant, high-temperature-resistant sealing products.7.Isoprene rubber (IR) is a cis-structure rubber polymerized from isoprene monomer.The chemical composition and three-dimensional structure are similar to natural rubber, and the performance is very close to natural rubber, so it is called synthetic natural rubber.It has most of the advantages of natural rubber, its aging resistance is better than that of natural rubber, its elasticity and strength are slightly lower than that of natural rubber, its processing performance is poor, and its cost is high.Operating temperature range: about -50°C ~ +100°C It can replace natural rubber to make tires, rubber shoes, hoses, tapes and other general products.8.Butyl rubber (IIR) is a copolymer of isobutylene and a small amount of isoprene or butadiene.It is characterized by good air tightness, good ozone resistance, aging resistance, high heat resistance, and the long-term working temperature can be below 130°C; it can withstand inorganic strong acids (such as sulfuric acid, nitric acid, etc.) and general organic solvents, and has good vibration absorption and damping properties. , electrical insulation is also very good.The disadvantages are poor elasticity, poor processing performance, slow vulcanization speed, poor adhesion and oil resistance.Operating temperature range: about -40°C ~ +120°C.Mainly used as inner tubes, water tires, balloons, wire and cable insulation layers, chemical equipment linings and shockproof products, heat-resistant conveyor belts, heat-resistant and aging-resistant tape products.9.Ethylene-propylene rubber (EPM\EPDM) is a copolymer of ethylene and propylene, generally divided into binary ethylene-propylene rubber and ternary ethylene-propylene rubber.It is characterized by excellent ozone resistance, ultraviolet resistance, weather resistance and aging resistance, ranking first among general-purpose rubbers.Good electrical insulation, chemical resistance, impact elasticity, acid and alkali resistance, small specific gravity, and high filling and matching.Heat resistance up to 150°C, resistance to polar solvents - ketones, esters, etc., but not resistant to aliphatic hydrocarbons and aromatic hydrocarbons, other physical and mechanical properties are slightly inferior to natural rubber and better than styrene-butadiene rubber.The disadvantage is that the self-adhesion and mutual adhesion are very poor, and it is not easy to bond.Operating temperature range: about -50°C ~ +150°C.Mainly used as chemical equipment lining, wire and cable sheath, steam hose, heat-resistant conveyor belt, rubber products for automobiles and other industrial products.10.Silicone rubber (Q) is a special rubber containing silicon and oxygen atoms in the main chain, among which the silicon element plays a major role.Its main feature is that it is resistant to high temperature and low temperature. It is currently the best rubber for cold and high temperature resistance. At the same time, it has excellent electrical insulation, high stability to thermal oxidation and ozone, and great chemical inertness.The disadvantage is that the mechanical strength is low, oil resistance, solvent resistance and acid and alkali resistance are poor, it is difficult to vulcanize, and the price is more expensive.Operating temperature: -60°C ~ +200°C.Mainly used to make high-resistant 11.Fluorine rubber (FPM) is an organic elastomer formed by the copolymerization of fluorine-containing monomers.Its characteristics are high temperature resistance up to 300 ℃, acid and alkali resistance, oil resistance is better in oil resistant rubber, good radiation resistance and high vacuum resistance; electrical insulation, mechanical properties, chemical corrosion resistance, ozone resistance and atmospheric resistance All were excellent in aging properties.The disadvantages are poor processability, high price, poor cold resistance, and low elasticity and air permeability.Operating temperature range: -20°C ~ +200°C.It is mainly used in the defense industry to manufacture vacuum-resistant, high-temperature-resistant, chemical-resistant sealing materials, hoses or other parts on aircraft and rockets, and in the automotive industry.12.Polyurethane rubber (AU\EU) is an elastomer made of polyester (or polyether) and diisocyanate compounds.It is characterized by good wear resistance, which is the best among all kinds of rubber; high strength, good elasticity, and excellent oil resistance.It is also excellent in ozone resistance, aging resistance, airtightness and the like.The disadvantage is poor temperature resistance, poor water and alkali resistance, poor resistance to aromatic hydrocarbons, chlorinated hydrocarbons and ketones, esters, alcohols and other solvents.Operating temperature range: about -30°C ~ +80°C.The production of tires consists of parts, gaskets, anti-vibration products, and rubber products that are wear-resistant, high-strength and oil-resistant.13.Acrylate rubber (ACM\AEM) is a polymer of ethyl acrylate or butyl acrylate.It is characterized by good heat resistance and oil resistance, and stable performance in lubricating oils containing sulfur, phosphorus and chlorine additives.At the same time, it is resistant to aging, oxygen and ozone, ultraviolet rays, and has excellent air tightness.The disadvantage is that it has poor cold resistance, no water resistance, no resistance to steam, organic and inorganic acids and alkalis.It swells severely in water-soluble solutions such as methanol, ethylene glycol, and ketone esters.At the same time, the elasticity and wear resistance are poor, the electrical insulation is poor, and the processing performance is poor.Operating temperature range: about -25°C ~ +180°C.It can be used to manufacture oil-resistant, heat-resistant, and aging-resistant products, such as seals, hoses, chemical linings, etc.14.Chlorosulfonated polyethylene rubber (CSM) is an elastic polymer obtained after polyethylene is chlorinated and sulfonated.Excellent ozone resistance and aging resistance, and better weather resistance than other rubbers.Flame retardant, heat resistance, solvent resistance and resistance to most chemicals and acid and alkali resistance are good.The electrical insulation is acceptable, and the wear resistance is similar to that of styrene-butadiene rubber.The disadvantage is that the tear resistance is poor and the processing performance is not good.Operating temperature range: about -20°C ~ +120°C.It can be used as a sealing material on an ozone generator, to manufacture oil-resistant seals, wire and cable sheaths, oil-resistant rubber products and chemical linings.15.Chlorine ether rubber (CO\ECO) is a polymer formed by the homopolymerization of epichlorohydrin or the copolymerization of epichlorohydrin and ethylene oxide.It is characterized by excellent resistance to aliphatic hydrocarbons and chlorinated hydrocarbon solvents, alkali resistance, water resistance, aging resistance, ozone resistance, weather resistance close to heat, and high air tightness.The disadvantages are low strength, poor elasticity, and poor electrical insulation.Operating temperature range: about -40°C ~ +140°C.It can be used as rubber hose, seal, film and container lining, oil tank, rubber roller, and manufacture oil seal, water seal, etc.16.Chlorinated polyethylene rubber (CM or CPE) is an elastic polymer made of polyethylene through chlorine substitution reaction.The performance is close to that of chlorosulfonated polyethylene rubber. It is characterized by good fluidity and easy processing; it has excellent weather resistance, ozone resistance and corona resistance, and good heat resistance, acid and alkali resistance, and oil resistance.The disadvantages are poor elasticity, large compression deformation, and low electrical insulation.Operating temperature range: about -20°C ~ +120°C.Wire and cable sheaths, rubber hoses, adhesive tapes, chemical linings for rubber rollers, etc.The above is an introduction to some commonly used rubber knowledge and performance, hoping to provide some reference for everyone.In addition, if you have the demand for rubber sheets and rubber pipes, you can also contact Demai, Demaike for customized production.
