The Quality Of Raw Materials For The Production Of Rubber Shock Pad Effect
Natural rubber (NR) natural rubber Flex fatigue resistance performance is good, good wear resistance of cold, has good air-tightness, water resistance, electrical insulation, and insulation. Is also a good insulating material. Has excellent physical and mechanical properties of natural rubber, natural rubber at room temperature with good elasticity, resilience can reach more than 50%~85%. Pure gum vulcanizate of tensile strength can reach 17~25MPa after after black carbon reinforced, can reach 25~35MPa, tear strength can reach 95kN/m. Natural rubber not cyclohexane, benzene, gasoline, and other media-resistant, insoluble in acetone models, such as ethanol, insoluble in water and resistant to hydrofluoric acid 10%, 20% hydrochloride, 30% acid, 50% sodium hydroxide, not resistant to strong acids, and strong oxidation with potassium permanganate, potassium dichromate. Natural rubber mainly used in tires, adhesive tapes, hoses, wires and cables and most of the rubber products, is the most widely used rubber. Synthetic rubber is the industry of synthetic rubber by low molecular weight compounds (called a monomer) rubber produced through polymerization, compared with natural rubber, a wider source of some synthetic rubber has natural rubber does not have performance. Classified according to the synthetic rubber: General synthetic rubber and special synthetic rubber, classified according to the structure: styrene butadiene rubber, Polybutadiene Rubber, neoprene, nitrile rubber, ethylene-propylene rubber, butyl rubber, fluorine rubber, silicone rubber, polyurethane, polysulfide rubber, acrylic rubber, chlorohydrin rubber, chlorosulfonated polyethylene rubber, chlorinated polyethylene rubber and so on. Performance of physical and mechanical properties of styrene-butadiene rubber SBR: good wear resistance, permeability, good insulation. Poor elasticity cold tear resistance, Flex crack resistance difference. Poor nonpolar solvent resistance and oil resistance. BR BR is currently the best in rubber elasticity, excellent cold resistance, low temperature resistance is a general purpose rubber low temperature resistance in one of the best. Wear resistance are particularly good, is very suitable for wear-resistant rubber, but its wet performance, low tensile strength and tear strength. Poor resistance to rip.
Neoprene neoprene has good physical mechanical properties with heat resistance, ozone resistance, aging resistance, corrosion resistance, fire resistance, oil resistance, good adhesion properties, so it is able to meet the high performance requirements, and uses a wide range of rubber materials, known as "multi-functional rubber". Chloroprene rubber could be used to make the tire sidewall, heat resistant conveyor belts, oil resistant and chemical-resistant hose, container liners, gaskets, rubber roller, rubber Board, car and tractor parts, door and window seals, rubber dams, building waterproof material and flame retardant rubber and adhesives. Butyl rubber (IIR) butyl rubber good heat resistance, weather resistance, ozone resistance to chemical corrosion and aging, in 150~170℃ long time use, heat-resistant limit of up to 200 degrees centigrade. Excellent electrical insulation properties, good cold, at-50 ° c can still maintain flexibility at low temperatures. Can be used to manufacture light products. Has outstanding air tightness and heat resistance. Also can make acid corrosion products and various heat and water resistance of sealing products.
Ethylene-propylene rubber EPDM excellent ageing resistance, versatility is the best in rubber. Performance was very good weather resistance, long-term use in the sunlight, damp and chilly natural environment. Three years after sun exposure without cracking. Excellent heat resistance, at 150 ℃ long-term use, intermittent use and 200 ° c temperature. Water absorption is small, so performance is also very good electrical resistance after immersion. Polar chemicals and pH (concentrated strong acids) and performance after prolonged contact with little change. Ethylene-propylene rubber is mainly used for ageing resistance, water resistance, corrosion resistance, electrical insulation fields. Heat resistant conveyor belts, cables and wires, corrosion-resistant lining, sealing gaskets, seals, household appliances fittings. Also applies to Terminal buffers, damping mat, materials and various types of rubber sheets for waterproofing, protection and so on. Also manufactured a variety of car parts. Silicone rubber excellence of resistance high, and low temperature performance, work temperature range-100~350℃; excellent of resistance ozone aging, and resistance oxygen aging, and resistance light aging and resistance weather aging performance; excellent of electric insulation performance, it of resistance electric Halo sex and resistance arc sex is good, resistance electric Halo life is PTFE of 1000 times times, resistance arc life is Viton of 20 times times; silicone rubber of surface can than most organic material low, so, it has low moisture sex, long-term dip Yu water in the its sucking water rate only 1% around, Physical and mechanical properties do not fall, mold good performance, moreover, much of the material is not sticky, isolated role to play. Silicone odorless, nonpoisonous, no adverse effects on the human body, has excellent physical inertia and physiological aging, high permeability, has extremely good breathability, room temperature for nitrogen, oxygen and air through 30~40 times higher than natural rubber. Silicone rubber with unique properties, so that it can be successfully used in other rubber is not solved many technical problems, meet the needs of modern industry and everyday life. Silicone rubber can be used in auto parts, electronic parts, aerospace sealing products bonding joints, construction industry, household appliances seals, artificial organs, medical catheter, etc. Fluorine rubber (FPM) Viton generally has a higher tensile strength and hardness, but less flexible. Long-term work available in 250 ℃, 300 ℃ for short-term work, with a superior corrosion resistance. His organic liquids (such as fuel oil, solvents, hydraulic fluid), acid (nitric acid, hydrochloric acid, sulfuric acid), high stability of concentrated hydrogen peroxide and other powerful antioxidants, are better than the other kinds of rubber. Fluorine rubber with excellent resistance to high temperature steam. Cold-poor performance, low gas permeability is rubber, Viton in sunlight, ozone and weather is very stable. After 10 years of natural aging, such as Vulcanized rubber, but also maintain good performance. Fluorine rubber in contact with flame can burn, but is automatically extinguished after fire, so belonging to the self-extinguishing type rubber fluororubber. Electrical insulation properties of fluorine rubber is not very good, and only suitable for low frequency and low voltage applications. FKM excellent resistance to vacuum performance. Physical and mechanical properties of polyurethane rubber is superior, so generally used in some high performance requirements of products, such as wear-resistant products, high-strength oil products and high hardness, high modulus products. Solid tires, rubber roller, tape, various molded, soles, heels, oil and cushion gaskets, coupling sections are available to manufacture polyurethane rubber. Because FKM has high temperature resistance, oil resistance, high vacuum and the characteristics of acid and alkali resistant, resistant to many chemicals, making it in modern aviation, missiles, rockets, space, ships, Atomic Energy, cutting-edge technology and automobiles, shipbuilding, chemical, petroleum, telecommunications, instrumentation, machinery and other industrial sectors have the application.