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FAQ

Is polyurethane and polyurethane rubber one thing?

The biggest difference between the plastic and the rubber is the performance of the plastic properties of high tensile strength, but low toughness, toughness and rubber are relatively high, mainly related to the glass transition temperature of material, high glass transition temperature of plastics, because of its high hardness, low toughness.

How to distinguish between good and bad silicone rubber gasket?

When the silica gel products are subjected to alternating stress (or strain), the structure and properties of the material change. With the development of fatigue process, the failure of silica gel products is called fatigue damage. Therefore, fatigue is also a way to distinguish the quality of silicone products.

What is the rubber composition and function of the airplane tyres?

Ethylene propylene rubber and ethylene propylene rubber are synthesized with ethylene and propylene as main raw materials. They are resistant to aging, electrical insulation and ozone resistance. Ethylene propylene rubber can be filled with oil and filled with carbon black. The price of the product is low, and the chemical stability of the ethylene propylene rubber is good. The abrasion resistance, elasticity, oil resistance and the proximity of styrene butadiene rubber are close. Ethylene propylene rubber is widely used. It can be used as tyre, sidewall, rubber strip and inner tube, as well as parts of automobile. It can also be used as wire, cable sheath and high voltage and extra high voltage insulating material. Can also manufacture rubber shoes, sanitary products and other light colored products. It is a chloroprene rubber as the main raw material, made by homopolymerization or copolymerization of small amounts of other. Such as high tensile strength, heat resistance, light resistance, aging resistance and oil resistance properties are superior to natural rubber, styrene butadiene rubber, butadiene rubber. It has a good flame resistance and excellent resistance to burning, its chemical stability is high, water resistance is good. Chloroprene rubber is electrical insulation, cold resistant performance is poor, rubber is not stable in storage. Neoprene is widely used, such as the manufacture of transport belts and belts, wires and cables, and the manufacture of oil resistant hoses, gaskets, and chemical resistant equipment linings.

What is the role of softening plasticizers in rubber? How are they classified?

Rubber plasticizer refers to add certain substances in rubber, can make the force rubber molecules is reduced, thereby reducing the glass transition temperature of the rubber, the rubber plasticity and fluidity, easy calendering and extrusion molding operation, but also can improve the mechanical properties of the vulcanizate of some physical machines, such as the decrease of hardness and elastic constant tensile stress, with high and low heat, improve the cold tolerance.

What is the composition of the vulcanizing agent for silica gel?

Vulcanizing agent is organic peroxide, or bridging agent, used for curing silicone rubber (Xi Likang), EVA and curing of unsaturated polyester.

Is there any poison in the processing and testing of rubber products? What about the salary?

With some raw materials are generally low in rubber products, such as sulfur, amine antioxidant, lead salt, nickel salt what.In addition, when processing or testing, if there is temperature, pay attention to good protection.As far as salaries are concerned, generally 2k-3k, of course, there is a difference between local manufacturers.

What gum does rubber and metal stick together?

JL-480 black rubber instant glue: medium viscosity, high strength, etc. used for inert surface, bonding, porous, acid, vibration and heat resistance, rubber, metal, plastic bonding. The utility model can be used for large gaps and more dispensing. High viscosity, impact resistance. The curing is slow, the curing has toughness, and the adhesive force is strong. After bonding, the adhesive surface can reach two and the adhesive surface dissolves as a whole. It is a shock resistant instant adhesive, which has better seismic and stripping strength than other series. Widely used, bonding rubber, plastic, and metal as adhesive for impact resistance. It is more flexible than conventional adhesive.

How can I get rid of the rubber?

One way is to use rubber deodorant is a kind of used to remove or reduce the acid degradation, all kinds of rubber produced in the processing or in the process of the use of alkoxy compounds, aldehydes, vinyl compounds, ammonia, CO2 plastic smell of chemical additives, the smell if inhaled for a long time will stimulate the senses give a person, discomfort or even harmful to the body, have two times of pollution to the environment, the chemical composition of different varieties of rubber and odor molecules are different, and in the actual development of Chinese ocean chemistry and etc. Ma'anshan Keli chemical is used in chemical chelation is also used, is the other mechanism, in addition to taste rubber both the rubber agent itself, also want to consider a variety of additives such as odor curing agents released, in addition to the use of rubber ingredients to improve rubber products and improve the level of environmental protection, rubber The production environment is of great help to the comprehensive utilization of regenerated rubber resources. A form of powder or liquid used in rubber, usually based on odor and odor characteristics