聚三唑/碳纳米管复合材料的制备与性能研究<sup>*</sup>

doi:10.11901/1005.3093.2014.118

材料研究学报

2014, Vol. 28

Issue (7): 555-560 DOI: 10.11901/1005.3093.2014.118

本期目录 | 过刊浏览

聚三唑/碳纳米管复合材料的制备与性能研究^*

张存超,万里强(

),许建文,郭冰,黄发荣

华东理工大学材料科学与工程学院特种功能高分子材料及相关技术教育部重点实验室上海 200237

Preparation and Characterization of Polytriazole/Carbon Nanotube Composites

Cunchao ZHANG,Liqiang WAN(

),Jianwen XU,Bing GUO,Farong HUANG

Key Laboratory for Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237

引用本文:

张存超,万里强,许建文,郭冰,黄发荣. 聚三唑/碳纳米管复合材料的制备与性能研究^*[J]. 材料研究学报, 2014, 28(7): 555-560.
Cunchao ZHANG, Liqiang WAN, Jianwen XU, Bing GUO, Farong HUANG. Preparation and Characterization of Polytriazole/Carbon Nanotube Composites[J]. Chinese Journal of Materials Research, 2014, 28(7): 555-560.

全文: PDF(2418 KB) HTML

摘要:

将叠氮基与碳纳米管(CNT)反应, 制备叠氮化碳纳米管(ACNT), 用FTIR、XPS等手段证明碳纳米管实现了叠氮化; 借助超声波的作用使ACNT均匀分散于单体中, 然后用原位聚合方法制备了聚三唑/碳纳米管(PTA/ACNT)复合材料。用透射电镜观察ACNT在基体树脂中的分散状况和复合材料的微观结构, 研究了ACNT的添加分数对PTA/ACNT复合材料玻璃化温度(T_g)、热稳定性(T_d5)和导热系数(λ)的影响。结果表明: 与PTA纯树脂相比, 当ACNT添加分数为1.0% (质量分数, 下同)时, 复合材料的T_g提高了33℃, 在氮气中T_d5提高了15℃, 在空气中T_d5提高了8℃; 当ACNT添加分数为5.0%时, 复合材料30℃的λ提高了45%, 150℃的λ提高了30%。

关键词 ：复合材料, 聚三唑, 碳纳米管, 叠氮化, 热学性能

Abstract：

Azido-carbon nanotube (ACNT) was prepared by the reaction of azide group with carbon nanotube (CNT). The azidation of CNT was proved by FTIR, XPS and so on. Under the effect of ultrasonic wave, ACNT was uniformly dispersed into monomers of polytriazole (PTA), and then PTA/ACNT composites were prepared via in situ polymerization. The dispersion status of ACNT in the matrix resin and the microstructure of PTA/ACNT composites were observed by TEM. The influence of ACNT addition on glass transition temperature (T_g), thermostability parameter (T_d5) and thermal conductivity (λ) of PTA/ACNT composites were also examined. The results showed that in comparison with the blank PTA resin, T_g increased 33℃, T_d5 increased 15℃ in nitrogen atmosphere and 8℃ in air for the PTA/ACNT composite with 1.0% ACNT; while λ increased by 45% at 30℃ and 30% at 150℃ for the PTA/ACNT composite with 5.0% ACNT.

Key words： composites polytriazole CNT azidation thermal properties

收稿日期: 2014-03-13

基金资助:* 上海市重点学科B502资助项目。

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https://www.cjmr.org/CN/10.11901/1005.3093.2014.118 或 https://www.cjmr.org/CN/Y2014/V28/I7/555

图1 PTA/ACNT复合材料制备流程示意图

图2 PCNT和ACNT的红外图谱

图3 ACNT表面的XPS N1s谱

图4 A2/B4混合物与A2/B4/ACNT混合物的DSC曲线

图5 ACNT含量对PTA/ACNT复合材料Tg的影响

图6 PTA/ACNT复合材料的TEM像

图7 PTA/ACNT复合材料与PTA空气气氛热失重曲线的对比

图8 PTA/ACNT复合材料与PTA氮气气氛热失重曲线的对比

表3 PTA树脂与PTA/ACNT复合材料TGA数据对比

图9 ACNT添加量对PTA/ACNT复合材料导热系数的影响

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