Modified type of EPDM foam sealing strip:
Epdm and EPDM rubber have been developed since the late 1950s and early 1960s. Many kinds of modified EPDM and thermoplastic EPDM rubber (such as EPDM/PE) have appeared in the world. The modification of ethylene propylene rubber mainly involves bromination, chlorination, sulfonation, maleic anhydride, silicone modification and nylon modification of ethylene propylene rubber. Ethylene propylene rubber graft acrylonitrile, acrylic ester and so on. Over the years, the methods of blending, copolymerization, filling, grafting, reinforcement and molecular recombination have been used. Many polymer materials with good general functions have been obtained. Ethylene propylene rubber has been modified. Also has obtained the very big improvement in the function aspect, then expanded the ethylene propylene rubber application program.
1. Ethylene propylene bromide
Ethylpropyl bromide rubber is prepared by brominating agent in a mill. After bromination, ethylpropyl bromide rubber can be vulcanized and bonded, but its mechanical strength decreases. Therefore, the brominated eb-C rubber is only suitable as the intermediate layer between eB-C rubber and other rubber.
2. Ethylene propylene chloride rubber
The chlorinated ethylene-propylene rubber is made of chlorine after the solution of epdm rubber. Fire resistance, oil resistance, adhesion function has also been improved.
3. Sulfonated ethylene propylene rubber
The sulfonated ethylene-propyl rubber is the ethylene propylene diene rubber dissolves in the solvent, after the neutralization agent of sulfonated rubber, the sulfonated ethylene rubber due to the thermoplastic elastomer constitution and excellent adhesion function. It will be widely used in adhesives, coating fabrics, building waterproof lean meat, anticorrosive fabrics, etc.
4. Ethylene propylene rubber grafted with acrylonitrile
Acrylonitrile is grafted to ethylene propylene rubber. Acrylonitrile modified ethylene propylene rubber not only preserves the corrosion resistance of ethylene propylene rubber. And obtained equivalent to nitrile -26 oil resistance, has a better physical and mechanical function and processing function.
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