纤维素增强乙烯-乙酸乙烯酯橡胶的性能  

Properties of cellulose-reinfored ethylene-vinyl acetate rubber

作　　者：蒋龙 吴倩 王倩倩 马丕明 东为富 陈明清 

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122

出　　处：《合成橡胶工业》2016年第4期322-326,共5页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(51303067)

摘　　要：通过溶液共混和静态硫化的方法分别制备了乙烯-乙酸乙烯酯(EVA)/微米纤维素(MCC)和EVA/纳米纤维素(NCC)硫化橡胶,对比研究了二者的凝胶含量、交联密度、力学性能、微观形态和透光率等。结果发现,MCC的加入使得EVA硫化橡胶的综合性能下降,而NCC对EVA橡胶具有明显的增强效果。2份(质量)NCC可使EVA硫化橡胶的拉伸强度提高75%,达到21.5 MPa,同时其扯断伸长率保持在800%以上。由于NCC的纳米尺度及其均匀分散性,EVA/NCC硫化橡胶还保持了较高的交联密度和透光率。Ethylene-vinyl acetate rubber/micro- crystalline cellulose （EVA/MCC） and ethylene-vi- nyl acetate rubber/nanocrystalline cellulose （EVA/ NCC） composite vulcanizates were prepared by solu- tion blending and static vulcanization. The gel con- tent, crosslinking density, mechanical properties, morphology and light transmittance of the EVA/MCC and EVA/NCC vulcanizates were compared and studied. The results showed that the mechanical properties of the EVA-based composite vulcanizates were deteriorated by the incorporation of MCC whereas remarkably reinforced by NCC, the tensile strength of the EVA composite vulcanizates reached 21.5 MPa, increased by 75% after adding 2 phr NCC, and the elongation at break was kept above 800%. Moreover, the EVA/NCC composite vulca- nizates maintained relatively high crosslinking densi- ty and light transmittance due to the nano-size and fine dispersion of NCC in EVA matrix.

关 键 词：乙烯-乙酸乙烯酯橡胶 纤维素 增强 拉伸性能 透明性 微观形态 

分 类 号：TQ330.1[化学工程—橡胶工业]