聚四氟乙烯/纳米CaCO_3复合材料制备及性能研究  

Study on the preparation and properties of PTFE/nano-CaCO_3 composites

作　　者：陈宝书[1] 栾道成[1] 魏倩[1] 徐涛[1] 赵正平[1] 

机构地区：[1]西华大学材料科学与工程学院,成都610039

出　　处：《化工新型材料》2010年第6期105-107,共3页New Chemical Materials

基　　金：四川省应用基础研究资助项目(042287);四川省特种材料及制备技术重点实验室开发基金项目

摘　　要：采用成型压力35MPa,压制时间15min,升温速率60℃/h,烧结温度330℃保温1h,375℃保温2h的制备工艺得到PTFE/纳米CaCO3复合材料,并研究了其力学性能。实验结果表明:加入纳米CaCO3显著提高了复合材料的弹性模量、断裂伸长率和冲击强度,最后对冷压烧结成型聚四氟乙烯制品的质量进行了分析。The suitable molding pressing force of PTFE in this experiment was 35MPa,the time of pressing was 15 minutes,the sintering temperature was 375℃ with the heating rate controlled within 60℃ per hour,and respectively insulated hold time was 1 hour at 330℃ and 2 hour at 375℃.The mechanical properties of the composites were studied by tests.The results showed that nano-CaCO3 had important effect on the improvement of the elastic modular,elongation at break and impact strength of PTFE.Finally,the qualities of PTFE products in the molding of cold-press-sintering were analyzed.

关 键 词：聚四氟乙烯 纳米碳酸钙 冷压烧结 力学性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]