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
段华锋 1郭宁宁 1陈雅雯 1王磊 1贺浩 1王跃平1
作者信息
- 1. 山西科技学院,山西 晋城 048000
- 折叠
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,MWCNTs-QX201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℃.
Abstract
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Key words
multi-walled carbon nanotubes/titanate coupling agent/surface modification/polyurethane/composite/tensile stre-ngth/heat resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据