Epdm and modified rubber

EPDM and EPDM have been successfully developed since the late 1950s and early 1960s. Since then, a variety of modified EPDM and thermoplastic EPDM (such as EPDM/PE) have emerged in the world, providing a wide range of varieties and grades for the extensive application of EPDM.The modification of ethylene-propylene rubber mainly includes bromination, chlorination, sulfonation, maleic anhydrization, silicone modification, nylon modification, etc.Ethylene - propylene rubber and grafted acrylonitrile, acrylate and so on.Over the years, many high molecular materials with good comprehensive properties have been obtained by means of blending, copolymerization, filling, grafting, strengthening and molecular compounding.The properties of ethylene-propylene rubber have been improved by modification, and the application range of ethylene-propylene rubber has been expanded.

Ethylene-propylene bromide rubber is prepared by brominating agent in an open mill.The brominated ethylene-propylene rubber can improve the vulcanization speed and adhesion performance, but the mechanical strength decreases, so the brominated ethylene-propylene rubber can only be used as the adhesive layer between ethylene-propylene rubber and other rubber.

Ethylene-propylene chloride is made by passing chlorine gas through ethylene-propylene chloride solution.After the chlorination of ethylene-propylene rubber, the vulcanization speed and the compatibility with unsaturated rubber can be improved.

Ethylene-propylene (epdm) sulfonated rubber is a kind of ethylene-propylene rubber dissolved in solvent and treated with sulfonating agent and neutralizing agent.Ethylene-propylene sulfonated rubber will be widely used in adhesive, coating fabric, building waterproof lean meat and anticorrosive lining due to its thermoplastic elastomer constitution and good adhesion property.

Acrylonitrile graft copolymerization of ethylene propylene rubber with toluene as solvent, chlorinated benzene methanol as initiator, under 80 ℃ to acrylonitrile graft in ethylene propylene rubber.Acrylonitrile modified ethylene-propylene rubber not only retained the corrosion resistance of ethylene-propylene rubber, but also obtained the oil resistance equivalent to butyronitrile-26, with better physical and mechanical properties and processing properties.

Thermoplastic ethylene-propylene rubber (EPDM/PP) is a blend of EPDM/PP and polypropylene.At the same time, the product of ethylene-propylene rubber can reach the expected crosslinking degree.In addition to retaining the inherent properties of ethylene-propylene rubber in terms of performance, it also has remarkable technological properties of thermoplastic injection, extrusion, blow molding and rolling molding.

In addition, the modified ethylene-propylene rubber and chlorosulfonated ethylene-propylene, acrylate grafted ethylene-propylene rubber, etc.