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首页> 外文期刊>Journal of Applied Polymer Science >Reinforcement of polysiloxane/silica elastomer composite by introduction of sacrificial bonds
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Reinforcement of polysiloxane/silica elastomer composite by introduction of sacrificial bonds

机译：通过引入牺牲键的聚硅氧烷/二氧化硅弹性体复合材料加固

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摘要

It is a challenge to improve tear strength of silicone rubber, especially at high filler loading circumstances. A method is offered here to introduce sacrificial bonds into the system. In particular, amide group was introduced onto the phenyl group of monomer methyl phenyl cyclosiloxane (D-n(Ph)) first, and this functionalized monomer (D-n(Ph) (amide)) thorn was further used for copolymerization with octamethylcyclotetrasiloxane (D-4) and 2,4,6,8-tetravinyl-2,4,6,8-tetramethyl-cyclotetrasiloxane (D-4(Vi)).. Vulcanizates composed by this new copolymer (1A-50) which amide group-containing is 1 wt % and with 50 phr TS-530 exhibit high tear strength of about 54 N center dot mm(-1), which is three times higher than that composed by polydimethylsiloxane (PDMS)/TS-530 (50 phr). The mechanical test indicates this new copolymer a promising candidate for the construction of high tear resistant silicone rubber, especially at high filler loading circumstances. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46129.
机译：提高硅橡胶的撕裂强度是一项挑战，特别是在高填料加载情况下。这里提供一种方法来将牺牲键引入系统中。特别地，将酰胺基团引入单体甲基苯基环硅氧烷（DN（pH））的苯基上，并且该官能化单体（DN（pH）（酰胺））刺还用于与八甲基甲基环四硅氧烷（D-4）的共聚合和2,4,6,8-四乙烯基-2,4,6,8-四甲基 - 环四硅氧烷（D-4（VI））。由该新共聚物（1A-50）组成的硫化酸盐，其含氨基酰胺是1 wt％和50phr ts-530表现出约54 n中心点mm（-1）的高撕裂强度，比聚二甲基硅氧烷（pdms）/ ts-530（50phr）组成的3倍。机械测试表明该新型共聚物是施工高撕裂硅橡胶的有希望的候选者，特别是在高填料加载情况下。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46129。

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