Hits:Updated:2016-10-08 08:10:42【Print】
| In 2012, China's ethylene-propylene rubber industry continues to maintain its hot investment trend. According to incomplete statistics, including the most competitive Sinopec / Mitsui joint venture projects, domestic and foreign manufacturers plan in recent years in China, the proposed total of more than 10 manufacturers of ethylene propylene rubber project, the total capacity of nearly 850,000 tons /year. As China's economy began to pick up, automotive, construction and other pillar industries into the rapid development period, significantly boosting the market demand for EPDM rubber. China Business Intelligence Network data show that in 2012 China's EPDM rubber production reached 19,100 tons, the apparent consumption reached 227,500 tons, the industry import dependence is still high. With the improvement of China's economy, the pillar industry as a sustained and rapid development of the automotive industry, the next period will be the EPDM rubber in the industry's rapid development period, coupled with urban infrastructure, high-speed railway, rail transit construction Such as the continuous development of China's EPDM will pull the market into a peak demand. In the business intelligence network released "2013-2018 China EPDM rubber market research and development prospects of the Advisory Report" predicted that in 2015 the domestic demand for EPDM rubber will reach 32 million tons of total, of which automotive and polymerization Will continue to be the most important two major consumer areas. Ethylene-propylene rubber has excellent electrical insulation properties and resistance to corona, electrical performance is better than or close to styrene-butadiene rubber, chlorosulfonated polyethylene, polyethylene and cross-linked polyethylene. 7, flexibility As the ethylene-propylene rubber molecular structure of the non-polar substituents, molecular cohesive energy is low, the molecular chain can be maintained within a wide range of flexibility, second only to natural rubber and butadiene rubber, and can still maintain at low temperatures. 8, adhesion Ethylene-propylene rubber due to the lack of active groups of molecular structure, cohesive energy is low, with the compound easy to spray cream, self-adhesive and mutual viscosity is poor. Second, ethylene propylene rubber modified varieties. EPDM and EPDM rubber from the late 1950s and early 1960s has been successfully developed, the world has emerged a variety of modified ethylene propylene rubber and thermoplastic ethylene propylene rubber (such as EPDM / PE), which is The wide application of ethylene propylene rubber provides a wide range of varieties and grades. Modified ethylene-propylene rubber is mainly ethylene-propylene rubber for bromination, chlorination, sulfonation, maleic anhydride, maleic anhydride, silicone modification, nylon modification. Ethylene propylene rubber grafted acrylonitrile, acrylic esters. Over the years, the use of blending, copolymerization, filling, grafting, enhanced and molecular composite means, access to a number of good overall performance of polymer materials. Ethylene-propylene rubber through the modification, but also in terms of performance has been greatly improved, thereby expanding the scope of application of ethylene-propylene rubber. Brominated ethylene propylene rubber is in the open mill to bromide treatment. Brominated ethylene-propylene rubber can improve its curing speed and adhesion, but the mechanical strength decreased, and therefore brominated ethylene propylene rubber is only suitable for ethylene-propylene rubber and other rubber adhesive intermediate layer. Chlorinated ethylene propylene rubber is the chlorine gas through the EPDM rubber solution made. Ethylene-propylene rubber can improve the vulcanization rate and the compatibility with the unsaturated, chlorinated flame resistance, oil resistance, adhesion performance is also improved. Sulfonated ethylene-propylene rubber is the EPDM dissolved in solvents, by sulfonation agent and neutralization agent. Sulfonated ethylene-propylene rubber as thermoplastic elastomer with good physical properties and adhesion in adhesives, coated fabrics, building waterproof meat, anti-corrosion lining, etc. will be widely used. Acrylonitrile-grafted ethylene-propylene rubber The acrylonitrile was grafted onto ethylene-propylene rubber at 80 ° C using toluene as solvent and perchlorobenzyl alcohol as initiator. Acrylonitrile modified ethylene-propylene rubber not only retains the corrosion resistance of ethylene propylene rubber, but also obtained the equivalent of nitrile-26 oil resistance, has good physical and mechanical properties and processing performance. Thermoplastic ethylene propylene rubber (EPDM / PP) is based on EPDM rubber and polypropylene for mixing. While the ethylene-propylene rubber to achieve the desired degree of cross-linking products. It not only retains the inherent properties of EPR, but also has remarkable performance of injection, extrusion, blow molding and calendering of thermoplastics. In addition, the modified ethylene-propylene rubber and chlorine sulfonated ethylene-propylene, acrylic grafted ethylene-propylene rubber. |
