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ORGANIC POLYMER-SURFACE MODIFIED PRECIPITATED SILICA

机译:有机聚合物表面改性的二氧化硅

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摘要

To improve the performance of rubber compounds using precipitated silica as a reinforcing filler, the silica surface was directly modified by (1) adsorption of a surfactant, (2) adsolubilization of an organic monomer, (3) in situ polymerization of the monomer in the surfactant bilayer, and (4) partial surfactant removal. Silica was thus surface modified with polymerized styrene, isoprene, butadiene, and copolymers. Styrene-butadiene modification afforded the most promising candidate based on evaluation in a silica-filled model tire compound. Compound physical testing showed that cure times were decreased, and break strength, tear energy, elongation to break, and cut growth resistance were increased. Thus, surface modification of silica by the in situ polymerization of organic monomers affords unique materials useful in improving rubber cure properties and cured compound physical properties. (C) 1995 John Wiley and Sons, Inc. [References: 40]
机译:为了使用沉淀二氧化硅作为增强填料来改善橡胶混合物的性能,可通过(1)吸附表面活性剂,(2)有机单体的增溶作用,(3)单体在乳液中的原位聚合反应直接改性二氧化硅表面。表面活性剂双层,和(4)部分去除表面活性剂。因此,用聚合的苯乙烯,异戊二烯,丁二烯和共聚物对二氧化硅进行表面改性。基于对二氧化硅填充的模型轮胎胶料的评估,苯乙烯-丁二烯改性提供了最有前途的候选物。复合物理测试表明,固化时间缩短了,断裂强度,撕裂能量,断裂伸长率和抗割伤性增加了。因此,通过有机单体的原位聚合对二氧化硅进行的表面改性提供了可用于改善橡胶硫化性能和硫化化合物物理性能的独特材料。 (C)1995 John Wiley and Sons,Inc. [参考:40]

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