橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2009 Vol.32 No.3 P.206-209

 橡胶技术网

α,ω-羟基聚(二甲基-甲基乙烯基)硅氧烷/聚甲基丙烯酸甲酯共混物的制备、硫化及表征

董建　 张乃强　 孙立平　 刘宗林　

摘　要：以过氧化苯甲酰为引发剂,使甲基丙烯酸甲酯在α,ω-羟基聚(二甲基-甲基乙烯基)硅氧烷(PDM-MVS)中进行自由基聚合,制备了PDM-MVS/聚甲基丙烯酸甲酯(PMMA)共混物,对共混物进行室温硫化得到硅橡胶,研究了硅橡胶的物理机械性能和微现形态.结果表明,随着PDM-MVS中乙烯基质量分数的增加,共混物的黏度逐渐增大;由PDM-MVS/PMMA共混物制备硅橡胶的物理机械性能明显优于α,ω-羟基聚二甲基硅氧烷/PMMA共混物制备的硅橡胶;制得的硅橡胶具有微观相分离结构,PMMA分散相均匀地分布于PDM-MVS连续相中,两相的相容性良好.
关键词：α,ω-羟基聚(二甲基-甲基乙烯基)硅氧烷;聚甲基丙烯酸甲酯;室温硫化硅橡胶;物理机械性能;相态分离
分类号：TQ333.93 　文献标识码：B
文章编号：1000-1255(2009)03-0206-04

Preparation,vulcanization and characterization of α, ω-dihydroxy-poly (dimethyl-methylvinyl) siloxane/poly(methyl methacrylate) blends

Dong Jian（Department of Chemistry and Chemical Engineering,Taishan Medical University,Taian 271000,China）　 Zhang Naiqiang（Department of Chemistry and Chemical Engineering,Taishan Medical University,Taian 271000,China）　 Sun Liping（Department of Chemistry and Chemical Engineering,Taishan Medical University,Taian 271000,China）　 Liu Zonglin （School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,China）　

Abstract：α,ω-dihydroxy-poly (dimethyl-methyl-vinyl) siloxane/poly (methyl methacrylate) (PDM-MVS/PMMA) blends were prepared by radical polymerization of methyl methacrylate in the presence of α,ω-dihydroxy-poly (dimethyl-methylvinyl) siloxane (PDM-MVS),using benzoyl peroxide as initiator.Silicone rubbers were prepared by vulcanizing the PDM-MVS/PMMA blends at room temperature.The mechanical properties and microphase structure of the silicone rubbers were studied in detail.The results showed that the viscosity of PDM-MVS/PMMA blends increased with increasing vinyl content in PDM-MVS.The silicone rubbers based on PDM-MVS/PMMA blends exhibited superior mechanical properties with respect to the silicone rubber based on PDMS/PMMA blend.The silicone rubber based on PDM-MVS/PMMA blend had microphase-separated structure consisting of PMMA domains uniformly dispersed within a continuous PDM-MVS matrix.The compatibility between the two phases was fairly good.
Keywords：α, ω-dihydroxy-poly ( dimethyl-methylvinyl ) siloxane;poly ( methyl methacrylate ) ;room temperature vulcanized silicone rubber;mechanical property;microphase separation

基金项目：山东省泰山医学院中青年学术骨干科研重点资助项目(zd 023).
作者简介：董建(1976-),女,博士,副教授.已发表论文15篇.
作者单位：董建（泰山医学院,化学与化学工程学院,山东,泰安,271000）　
　　　　　张乃强（泰山医学院,化学与化学工程学院,山东,泰安,271000）　
　　　　　孙立平（泰山医学院,化学与化学工程学院,山东,泰安,271000）　
　　　　　刘宗林（山东大学,化学与化工学院,山东,济南,250100）　

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收稿日期：2008年3月24日

修稿日期：2008年12月12日

出版日期：2009年5月15日

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