原位法制备碳纳米管/纳米SiO_2改性丙烯酸树脂乳液的研究  

Acrylic Resin Emulsion Modified by MWCNTs/nano-SiO_2 via In Situ Polymerization

作　　者：刘海腾[1] 马建中[1] 周建华[1] 孙友昌[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021

出　　处：《中国皮革》2012年第13期17-21,共5页China Leather

基　　金：国家973计划(2011CB612309);国家国际科技合作专项项目(2011DFA43490);国家自然科学基金(51073091;21176149);陕西科技大学研究生创新基金资助项目

摘　　要：采用溶胶-凝胶法制备了碳纳米管/纳米SiO2复合粒子,再用硅烷偶联剂KH570对其进行改性。采用原位乳液聚合技术,制备了碳纳米管/纳米SiO2改性的丙烯酸树脂乳液。研究了KH570改性MWCNTs/SiO2的用量对丙烯酸树脂乳液的稳定性、膜的力学性能及热性能的影响。结果表明:碳纳米管/纳米SiO2改性丙烯酸树脂乳液具有良好的稳定性;随着KH570改性MWCNTs/SiO2用量的增加,膜的抗张强度增大,与普通丙烯酸树脂相比,当其用量为0.04%时,抗张强度提高了34.2%,耐水性变好;当其用量为0.04%时,膜的综合性能最好。与普通丙烯酸树脂相比,碳纳米管/纳米SiO2改性丙烯酸树脂膜的耐热性明显提高。MWCNTs were firstly coated with inorganic silica by a sol - gel process and then grafted with silane coupling agent （KH570）. The acrylic resin finishing agent was modified by carbon nanotube/nano-SiO2 via in -situ emulsion polymeriza-tion. The influence of the dosage of MWCNTs/nano - SiO2 on the emulsion and membrane performance were studied. The results show that the acrylic resin emulsion modified by carbon nanotubes/nano - SiO2 has a good stability. With an increase in the dosage of MWCNTs/SiO2 modified by KH570,the tensile strength of the film is increased by 34. 2% when the dosage of MWCNTs/SiO2 is 0. 04% compared with common acrylic resin. And the water resistance becomes better,the comprehensive performance is the best when the dosage of MWCNTs/Si02 is 0. 04%. Compared with common acrylic resin ,the thermo stability of acrylic resin modi-fied by MWCNTs/SiO2 is obviously improved.

关 键 词：碳纳米管 纳米SiO2 丙烯酸树脂 原位乳液聚合 涂饰剂 

分 类 号：TQ630.4[化学工程—精细化工]