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A PROCESS TO PREPARE HIGH-QUALITY NATURAL RUBBER-SILICA MASTERBATCH BY LIQUID PHASE MIXING
A PROCESS TO PREPARE HIGH-QUALITY NATURAL RUBBER-SILICA MASTERBATCH BY LIQUID PHASE MIXING
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机译:液相混合制备高品质天然橡胶-二氧化硅母料的方法
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摘要
The present invention relates to a process for making a polymer masterbatch with silica nanoparticles highly uniformly dispersed therein by using a stable aqueous emulsion of compatibilized silica nanoparticles, the sizes of which are mechanically reduced to nanoscales. Adequate reduction of the silica particles to nanoscales is essential for the formation of a desired emulsion of high stability. The said emulsion of compatibilized silica nanoparticle can be easily mixed under mild conditions with a polymer in latex form, which can be high purity natural rubber, synthetic rubber and / or a blend thereof. The bifunctional organosilane coupling agent bonded-Silica nanoparticles are subsequently incorporated into the rubber polymer network during coagulation with formic acid. The inventive rubber-silica masterbatch thus obtained is useful for manufacturing rubber and other polymer composite products.
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