Q:Which kind of rubber has the best wear resistance?

Three yuan ethylene propylene rubber introducedThree yuan ethylene propylene rubber is ethylene, propylene and non conjugated diene three yuan copolymer, began commercial production in 1963. The consumption of the whole world is 800 thousand tons every year. The most important feature of EPDM is its superior oxidation resistance, ozone resistance and corrosion resistance. Because three yuan ethylene propylene rubber belongs to polyolefin family, it has excellent curing property. Of all rubbers, EPDM has the lowest specific gravity. It absorbs large amounts of fillers and oils and has little effect on properties. Therefore, rubber compounds with low cost can be made.Viton (fluorocarbon rubber) is a synthetic rubber containing fluorine, fluorocarbon rubber high temperature resistance, oil resistance and various chemical erosion characteristics, is the science and technology of modern aviation, missiles, rockets, space navigation and so on the tip of indispensable material. In recent years, along with the automobile industry on the reliability and safety requirements continue to improve, the amount of fluorocarbon rubber in cars is also growing rapidly.

Q:Can the rubber surface be painted with paint?

Rubber surface painting, rubber will have an impact on the long time will crack!

Q:Why does rubber stink?

Because of the original gum problem, such as PU or polyurethane will have a foul smell.Highly elastic polymer material with reversible deformation of rubber. It is elastic at room temperature and can produce great deformation under very little external force. It can be restored to original state after removing external force. Rubber is completely amorphous polymer, its glass transition temperature (T, g) is low, the molecular weight is often large, more than hundreds of thousands.

Q:What are the causes of chapped rubber products?

Rubber aging is a common problem of rubber products, and aging is mainly due to internal structure or component is easy to aging due to weakness, such as unsaturated double bond, branched, carbonyl, hydroxyl and so on; at the end, the main external or environmental factors are sunlight, oxygen, ozone, heat, water and mechanical stress force, high energy radiation, electricity, industrial gas, water, salt fog, fungi, bacteria, insects etc.

Q:What is the difference between a thermoforming machine and an injection molding machine in a rubber plant?

The products produced by the thermoforming machine have low deformation rate and fixed shape. The products produced by injection molding machine have high deformation rate and have slightly different shapes.

Q:How can rubber be made into rubber when it is made?

Rubber made of rubber products, to be mixed, vulcanized, trimming and many other processes to make rubber products, is a complex processing plant produced.

Q:Rubber and metal have to be sealed before they are too strong

Different materials and O-ring O-ring compression the change of general material such as NBR, NR, nitrile rubber, natural rubber, chloroprene rubber CR, EPDM three EPDM, HNBR hydrogenated nitrile rubber, silica gel SILICOME SBR Buna, styrene butadiene rubber, SBR, acrylate rubber ACM, compression O-ring or the 20% to calculate. If it is a special material FKM, VITON, PU, FLS silicon fluorine rubber, fluorine rubber, polyurethane, compression of these materials is calculated by 15% o ring.

Q:What is the pressure on rubber products during vulcanization?

It can be seen that the vulcanization time can be shortened by increasing the sulfuration temperature. The process of high temperature vulcanization is injection vulcanization and electric heating flat vulcanization. Both of them can be cured at 160 DEG C or even higher. In recent years, the industry has also adopted the trend of high temperature vulcanization. In addition, the continuous vulcanization process using eutectic liquid as heating medium has also begun to use high temperature vulcanization. In the rubber injection molding process, because the rubber material has passed the preheating and plasticizing of the screw, higher vulcanization temperature (such as 175~183 DEG C) can be adopted, but the reversion or sulfuration of rubber is less affected. For example, for three yuan ethylene propylene rubber, when set 160 degrees for molding, the positive curing time is 60min, if it is changed to 200 degrees noteThe time of vulcanization is only 4min. With the use of general-purpose rubber to make small products, the vulcanization time can be l-2mm.

Q:How is rubber made? What kind of equipment do you need? How much is it?

The processing process of rubber is mainly to solve the process of plastic and elastic contradictions, through various means of processing, the elastic rubber has become the plastic rubber, adding various in the preparation of semi-finished products, and then through the vulcanization is has semi-finished plastic and rubber products into high elasticity and good mechanical performance the.

Q:What advantage does ethylene propylene rubber with three yuan compare to two yuan ethylene propylene rubber?

Because the two EPDM molecules containing double bonds, not curing, which limits its application. In the ethylene propylene rubber commodity brand, two yuan ethylene propylene rubber accounts for only about 10% of the total. While the three rubber vulcanization available, which has been widely used, and become the main varieties of ethylene propylene rubber, ethylene propylene rubber in the commodity brands accounted for about 90%. At present, third monomers commonly used in the industrial production of three yuan ethylene propylene diene monomer are ethylene glycol norbornene (ENB), dicyclopentadiene (DCPD) and 1, 4- (HD).