新型硼酸酯偶联剂的合成及其应用  

Synthesis and Application of Novel Borate Coupling Agent

作　　者：王中华 梁兵 WANG Zhonghua;LIANG Bing(College of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang,Liaoning 110142,China)

机构地区：[1]沈阳化工大学材料科学与工程学院

出　　处：《塑料》2019年第3期100-104,共5页Plastics

基　　金：辽宁省科技计划(2015304002)

摘　　要：以硼酸、2-甲基环己醇、乙醇胺为原料,甲苯为共沸溶剂,合成 1 种新型偶联剂硼酸邻甲基环己醇二乙醇胺酯( MCDAB)。采用傅立叶变换红外光谱仪( FTIR)和核磁共振氢谱仪( 1 HNMR)对合成的偶联剂进行表征;在滑石粉/PP 复合材料中,添加自制的偶联剂( MCDAB)对其改性,分别使用扫描电子显微镜( SEM)、偏光显微镜( POM)、计算机系统拉伸试验机、数字冲击试验机对复合材料的微观形貌、结晶性能、力学性能进行分析。结果表明:经 MCDAB改性的滑石粉与 PP 相容性变好,分散更均匀,结晶度明显提高;当 MCDAB 添加量为 1. 8%时,复合材料的拉伸强度为35. 13 MPa,提高了 11. 3%;断裂伸长率为 11. 78%,提高了 126%;冲击强度为 10. 78 kJ·m^-2,提高了 105%;弯曲强度为 250 MPa,提高了近 25%。A new coupling agent,2-methylcyclohexanol diethanolamine borate (MCDAB) was synthesized by boric acid, 2-methylcyclohexanol and ethanolamine as raw materials and toluene as an azeotropic solvent. The structure of the product was characterized by fourier transform infrared spectroscopy (FTIR) and 1H nuclear magnetic resonance (1 HNMR);the talc /PP composite was modified by adding self-made coupling agent ( MCDAB),the microstructure,crystallization and mechanical properties of the composite were analyzed by using scanning electron microscopy (SEM),polarized light microscopy (POM), computer system tensile testing machine,digital impact testing machine. The results showed that the compatibility of talc powder modified by MCDAB with PP was better,the dispersion was more uniform,and the crystallinity was significantly improved. When the amount of MCDAB added was 1. 8% by weight,the tensile strength of the composite material was 35. 13 MPa,an increase of 11. 3%;the elongation at break was 11. 78%,an increase of 126%;the impact strength was 10. 78 kJ· m^-2,an increase of 105%;the bending strength was 250 MPa,an increase of 25%.

关 键 词：硼酸酯偶联剂 滑石粉 聚丙烯 复合材料 力学性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]