聚氯乙烯共混改性氯化丁基橡胶阻尼材料性能  

The properties of damping materials blending modification of CIIR/PVC

作　　者：秦岩[1] 屈爽[1] 黄志雄[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《华中科技大学学报（自然科学版）》2008年第9期102-105,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50772083)

摘　　要：采用聚氯乙烯（PVC）糊树脂共混改性氯化丁基橡胶（CIIR）方法，制备了一种在60～120℃阻尼效果良好的改性橡胶材料，以解决氯化丁基橡胶阻尼温域较低的缺陷．DMTA测试表明：单纯的PVC糊树脂共混CIIR材料在高温段阻尼峰较窄，通过邻苯二甲酸二丁酯处理PVC糊树脂形成塑溶胶再共混CIIR可以拓宽阻尼温域，60～120℃材料的阻尼因子tanδ〉0．15．SEM分析表明：邻苯二甲酸二丁酯处理PVC解决了其在橡胶中的分散性，提高了界面结合性能．FTIR分析表明：塑溶胶现成、共混与硫化过程未产生接枝与共聚．力学性能测试则表明：共混材料柔韧性提高，阻尼材料的拉伸性能与表面硬度随PVC塑溶胶含量提高而降低．One kind of modified rubber with good damping properties in the temperature range from 60℃ to 120℃ was prepared by blending polyvinyl chloride （PVC） resin paste and chlorobutyl rubber （CIIR） to improve the damping properties of CIIR in higher temperature region. Dynamic mechanical thermal analysis （DMTA） tests showed that the modified rubber prepared by simply blending pure PVC resin paste with CIIR possessed narrow damping temperature range. The modified rubber obtained by PVC treated with Dibutyl phthalate （DBP） and then blending with PVC possessed better damping properties with the value of tan 8 above 0.15 in the temperature range from 60℃ to 120℃. SEM showed that both the distribution of PVC in CIIR and interface bonding properties were improved after PVC was treated with DBP. Fourier transform infrared spectroscopy （FTIR） showed that the no graft or copolymerization occur during plastisol treating, blending and vulcanization. Mechanical testing shows that the modified rubber has better flexibility and the tensile properties and the surface hardness decreases with increasing the content of PVC.

关 键 词：聚氯乙烯 氯化丁基橡胶 共混 阻尼性能 改性橡胶 

分 类 号：TQ333[化学工程—橡胶工业]