TS-1分子筛/硅橡胶纳米复合材料的制备及其性能研究

Research on the Preparation and Performance of TS-1 Zeolite/Silicone Rubber Nanocomposites

采用预晶化补硅法合成了纳米TS-1分子筛,并用其对硅橡胶进行改性,制备出硅橡胶纳米复合材料。按照GB/T 1040—1992、GB/T 1410—2006对复合材料的机械和绝缘性能进行测试,采用热重分析(TG)技术进行耐热性能分析。结果表明,随着TS-1分子筛添加量的增加,硅橡胶纳米复合材料的拉伸强度先上升后快速降低,而断裂伸长率则不断降低;其起始分解温度和最高分解温度均不断上升;体积电阻率和介电强度先上升后下降,在TS-1分子筛添加量为0.5%时达到最大值。

Nano titanium silicalite-1(TS-1)zeolite is synthesized by using pre-crystallization and silicon filling method,and then used to modify silicone rubber to prepare silicone rubber nanocomposites.The mechanical and insulating properties of the composite materials are tested according to GB/T 1040—1992 and GB/T 1410—2006,and the thermal properties are analyzed by thermogravimetric analysis(TG).The results show that the tensile strength of silicone rubber nanocomposites first increases and then decreases rapidly,while the elongation at break of silicone rubber nanocomposites decreases,and the initial decomposition temperature and maximum decomposition temperature increases,mean while the volume resistivity and the dielectric strength increases first and then decreases,with the increase of TS-1 zeolite,reaching the maximum value when the addition of TS-1 zeolite at 0.2%.