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首页> 外文期刊>Journal of Applied Polymer Science >Novel Materials Based on Silicone-Acrylate Copolymer Networks
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Novel Materials Based on Silicone-Acrylate Copolymer Networks

机译：基于有机硅-丙烯酸酯共聚物网络的新型材料

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摘要

This article presents a broad class of materials made by copolymerization of a family of telechelic free radically polymerizable siloxanes with various acrylate monomers that polymerize to form high T_g polymers. Films with properities ranging from strong elastomers to plastics have been obtained by UV-initiated bulk copolymerization of functional siloxanes dissolved in acrylate monomers (in the presence of functional endgroups, the choice of (meth)acrylate comonomer, and the siloxane/acrylate ratio all have a rather dramatic effect on the morphology, and thus, on the properties of the copolymeric networks. Physical properties of the materials, such as optical appearance and mechanical and transport properties are correlated with the unique morphologies observed by TEM studies. Unusual properties such as reversible whitening of some of the materials and low Poisson ratios have been attributed to the microcavitation observed when high T_g acrylate domains interfere with the network deformation. Networks composed of high T_g acrylates (major fraction) coreacted with elastomeric siloxanes can provide heat-shrinkable materials when they are elongated at temperatures higher than the T_g of the corresponding polyacrylates and quenched.
机译：本文介绍了一系列可通过远螯可自由基聚合的硅氧烷与各种丙烯酸酯单体共聚形成高T_g聚合物的共聚材料。通过UV引发的丙烯酸酯单体中溶解的官能团硅氧烷的本体聚合（在官能端基的存在下，（甲基）丙烯酸酯共聚单体的选择以及硅氧烷/丙烯酸酯比例均具有），获得了性能从强硬弹性体到塑料的薄膜。材料的物理性质（如光学外观，机械和传输性质）与通过TEM研究观察到的独特形态有关，而异常的性质（如可逆性）与材料的物理性质（如光学外观，机械和传输性质）相关。当高T_g丙烯酸酯结构域干扰网络变形时，观察到的微空化作用使某些材料变白，泊松比低，由高T_g丙烯酸酯（主要成分）与弹性体硅氧烷共同作用的网络可以在提供热收缩性材料在高于芯线的T_g的温度下伸长将聚丙烯酸酯纺丝并淬火。

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