原位聚合制备HNBR/PZDMA纳米复合材料的结构与性能  

Structure and properties of HNBR/PZDMA nanocomposites prepared by in-situ polymerization

作　　者：赵兴波[1] 张秋禹[1] 尹德忠[1] 顾军渭[1] 尹常杰[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《现代化工》2011年第12期32-35,共4页Modern Chemical Industry

基　　金：国家重点基础研究发展计划(2010CB635111);西北工业大学基础研究基金(JC20100219)

摘　　要：采用氧化锌(ZnO)与甲基丙烯酸(MAA)在混炼和硫化过程中原位聚合制备氢化丁腈橡胶/聚甲基丙烯酸锌(HNBR/PZDMA)纳米复合材料。研究了甲基丙烯酸锌(ZDMA)理论生成量、硫化剂用量和二段硫化时间对复合材料物理机械性能的影响,分析了PZDMA对复合材料热稳定性的影响,并考察了混炼胶和硫化胶的形态结构。结果表明,原位合成ZDMA的理论量为50 phr,硫化剂DCP用量为4～6phr,二段硫化时间为9 h时,复合材料的综合性能最佳。TGA分析表明PZDMA显著提高了复合材料的热稳定性;SEM分析表明原位合成ZDMA在HNBR中分散均匀,与HNBR相容性较好,拉断断面形态与复合材料高强度相符合。The nanocomposites of hydrogenated nitrile rubber （HNBR）/poly （ zinc dimethacrylate ） （ PZI）MA ） are prepared by compounding and in-situ polymerizing with zinc oxide （ZnO） and methacrylic acid （MAA） in the curing process. The effects of ZDMA content, curing ingredient content and post-curing time on the physical and mechanical properties of nanocomposites are investigated. The effect of PZDMA on thermal stability is analyzed. The morphology structure of compounds and vulcanizates is observed. The results show that the comprehensive property is optimal when ZDMA is 50 phr, DCP is 4 - 6 phr and post-curing time is 9 hours. TGA analysis shows that PZDMA can increase thermal stability markedly. SEM analysis shows that the ZDMA disperses evenly and has good compatibility with HNBR. The morphology of tension fracture surface coincides with the high strength of nanocomposites.

关 键 词：氢化丁腈橡胶 原位聚合 甲基丙烯酸锌 机械性能 形态结构 

分 类 号：S215[农业科学—农业机械化工程]