火焰喷涂乙烯-四氟乙烯共聚物/纳米SiO_2涂层的热行为  

Thermal Behavior of Flame Sprayed Ethylene Tetrafluoroethylene/Nano-SiO_2 Coating

作　　者：李亚东[1] 强克刚[1] 刘志[1] 张治军[2] 

机构地区：[1]郑州轻工业学院河南省表界面科学重点实验室,河南郑州450002 [2]河南大学特种功能材料省重点实验室,河南开封475001

出　　处：《中国塑料》2008年第12期48-52,共5页China Plastics

基　　金：河南省自然科学基金项目(0311022400);河南省教育厅科技攻关项目(2003530293);河南省高校杰出人才创新工程项目(2006KYCX007)

摘　　要：采用火焰喷涂法制备了乙烯-四氟乙烯共聚物(ETFE)/纳米SiO2复合涂层,采用红外光谱仪、差示扫描量热仪(DSC)对复合涂层的结构、非等温结晶过程、熔融行为进行分析。红外光谱分析表明,ETFE及ETFE/纳米SiO2粉末在火焰喷涂过程中没有发生氧化或降解反应,表明火焰喷涂法适宜制备ETFE及ETFE/纳米SiO2复合涂层;DSC分析结果表明,纳米SiO2粒子的加入提高了复合涂层的结晶速率,结晶温度略有提高,而且使复合涂层的熔融峰温度高于纯ETFE涂层。结果表明,纳米SiO2粒子具有成核剂的作用,诱导ETFE大分子结晶,使其结晶能力及结晶的完善程度提高。Ethylene-co-tetrafluoroethylene （ETFE）/nano-SiO2 composite coatings were prepared via flame spray. The degradation behavior of the composite coating was characterized using Fourier transform infrared spectroscopy, which confirmed that no oxidation nor degradation occurred during the flame spray. The non-isothermal crystallization and melting behavior were investigated using differential scanning calorimeter. It showed that the SiO2 particles promoted the heterogeneous nucleation and the crystallization temperature was increased appreciably, the melt point was also increased.

关 键 词：火焰喷涂 乙烯-四氟乙烯共聚物 纳米二氧化硅 非等温结晶 熔融行为 

分 类 号：TB383.1[一般工业技术—材料科学与工程]