A method of preparing fluororubber through microemulsion polymerization
A technology of microemulsion polymerization and fluororubber, which is applied in the field of preparation of fluororubber by microemulsion polymerization, can solve problems such as application research blanks, and achieve the effects of avoiding gel, improving vulcanization, and improving production efficiency
Inactive Publication Date: 2017-05-10
江苏梅兰化工有限公司
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A method of preparing fluororubber through microemulsion polymerization is disclosed. The method includes (1) compounding fluoroether carboxylic acid or carboxylate polymer the molecular formula of which is CF3O(CF(CF3)CF2O)(CF2CF2O)COOX and a fluoroether oil polymer the molecular formula of which is CF3O(CF(CF3)CF2O)<c>(CF2CF2O)<d>CF3 according to a certain ratio to obtain an aqueous solution having a certain concentration; (2) subjecting one or a plurality of fluoroolefin monomers, a cure site monomer, a perfluoroether functional monomer and other olefin monomers according to a ratio to microemulsion polymerization in a polymerization kettle under actions of a fluorine-containing microemulsion surfactant, an initiator, and other auxiliary agents; and (3) subjecting the emulsion obtained through polymerization to coacervation, washing and drying for dehydration, and then preparing a fluororubber sheet resistant to low temperature through an open mill. Vulcanization, mechanical and low-temperature resistant properties of the fluororubber are effectively improved, the polymerization time is greatly shortened, and the production efficiency is increased.
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