UHMWPE-45#钢用改性氯丁橡胶粘合剂的研究

采用甲基丙烯酸甲酯（MMA）对氯丁橡胶（CR）进行接枝改性,并分别采用正交试验设计方法和一种新的工业过程操作优化方法——可视化优化方法对合成工艺条件进行分析处理、预测和优化；并对胶膜的性能进行分析.结果表明：影响拉伸剪切强度因素主次顺序依次为,MMA浓度、BPO浓度、溶剂量、反应温度、反应时间；剪切强度随着接枝率的增大而增强；最佳工艺条件为,CR100份、MMA60份、混合溶剂700份、BPO1.0份、温度82.5℃、反应时间4h,制得的CR-MMA胶接枝率达39.57％、对UHMWPE和45#钢的粘接强度为0.823 4 MPa；MMA接枝改性破坏CR分子结构排列的规整性,改善了CR胶的耐热性,使CR-MMA胶黏剂的耐热温度可达200℃以上.

Study on Modified Chloroprene Rubber Adhesive for W-45 # Steel

Methyl methacrylate （MMA） was used to graft onto and modify chloroprene rubber （CR）.And orthogonal experimental design method and visualization visualized global optimization method,as a new optimization method for the operation of industrial process,were used to analyze,forecast and optimize the conditions of preparing.The performance of film was analyzed.The results showed that the primary and secondary order of factors,affecting the shear strength,were the concentration of methyl MMA,the concentration of BPO,solvent content,reaction temperature,reaction time.As the grafting rate increased,the shear strength also increased.The optimum conditions were obtained when the quality of CR,MMA,mixed solvents,BPO were 100,60,1.0,750 phr respectively,the reaction temperature was 82.5 ℃,the reaction time was 4 hours.And the prepared CR-MMA adhesive＇ grafting rate was 39.57％ and the adhesion strength for UHMWPE and 45 # steel was 0.8234Mpa.Grafted MMA destroyed the array regularity of the CR molecular structure and improved the CR＇s heat resistance.CR-MMA adhesive＇s heat-resistant temperature was up to 200 ℃ or more.