钛酸酯改性碳纳米管/聚氨酯复合材料的制备与性能  

Preparation and properties of titanate modified carbon nanotubes/polyurethane composites

作　　者：段华锋 郭宁宁 陈雅雯 王磊 贺浩 王跃平 DUAN Hua-feng;GUO Ning-ning;CHEN Ya-wen;WANG Lei;HE Hao;WANG Yue-ping(Shanxi Institute of Science and Technology,Jincheng 048000,China)

机构地区：[1]山西科技学院,山西晋城048000

出　　处：《热固性树脂》2024年第3期7-11,共5页Thermosetting Resin

基　　金：山西科技学院校级科研项目(XKY026)。

摘　　要：采用Fenton试剂对多壁碳纳米管(MWCNTs)进行氧化处理,再利用异丙基三(二辛基焦磷酸酰氧基)钛酸酯(QX201)对WMCNTs进行接枝改性,并将改性的MWCNTs(MWCNTs-QX201)与聚氨酯(PU)混合制备复合材料。研究表明,QX201可有效改善MWCNTs与PU之间的相容性。当MWCNTs的用量为PU质量的1.5%时,MWCNTsQX201显著提高了复合材料的力学和热学性能,其中拉伸强度较纯MWCNTs/PU复合材料提升了25.5%,初始热分解温度以及最大热损失速率温度分别提高了6.4℃和3.1℃。The multi-walled carbon nanotubes(MWCNTs)were oxidized by Fenton reagent,and then grafted with isopropyl tris(dioctyl pyrophosphate acyloxy)titanate(QX201),and the modified MWCNTs(MWCNT-QX201)were mixed with PU to prepare composites.The experimental results indicated that the QX201 grafted onto the surface of MWCNTs could effectively improve the compatibility between MWCNTs and PU.When the amount of MWCNTs was 1.5%of the mass of PU,the mechanical and thermal properties of the composites were significantly improved by MWCNTs-QX201,in which the tensile strength was increased by 25.5%,the initial thermal decomposition temperature and the maximum heat loss rate temperature were increased by 6.4℃and 3.1℃,respectively.

关 键 词：多壁碳纳米管 钛酸酯偶联剂 表面改性 聚氨酯 复合材料 拉伸强度 耐热性 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]