Effect of polydopamine-modified multi-walled carbon nanotubes on the thermal stability and conductivity of UV-curable polyurethane/polysiloxane pressure-sensitive adhesives

被引：34

作者：

Xu, Chang-An ^{[1
,2
]}

Qu, Zhencai ^{[1
,2
]}

Meng, Huifa ^{[1
,2
]}

Chen, Bing ^{[1
,2
]}

Wu, Xiankun ^{[1
,2
]}

Cui, Xiaohua ^{[1
,2
]}

Wang, Kunxin ^{[1
,2
]}

Wu, Kun ^{[1
,2
,4
]}

Shi, Jun ^{[1
,2
,5
]}

Lu, Mangeng ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Chem, Guangzhou 510650, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Guangdong Prov Key Lab Organ Polymer Mat Elect, Guangzhou 510650, Peoples R China

[4] CAS Engn Lab Special Fine Chem, Guangzhou 510650, Peoples R China

[5] CASH GCC Nanxiong Res Inst New Mat Co Ltd, Shaoguan 512026, Peoples R China

来源：

POLYMER | 2021年 / 223卷 / 223期

基金：

国家重点研发计划;

关键词：

Multi-walled carbon nanotubes; Thermal stability; Polyurethane; Conductivity; Pressure-sensitive adhesives; ELECTRICAL-PROPERTIES; POLY(DOPAMINE); POLYURETHANE; GRAPHENE; BLACK;

D O I：

10.1016/j.polymer.2021.123615

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The conductivity and thermal stability of traditional polymers are generally not ideal, consequently endowing polymer-based pressure-sensitive adhesives (PSAs) with certain conductivity and heat resistance has become a popular design idea. Although multi-walled carbon nanotubes (CNTs) possess good electrical conductivity and thermal stability, their adhesion to the substrate is poor. Inspired by mussel chemistry, polydopamine (PDA) is adopted to modify CNTs to improve their adhesion to substrates. Eventually, polydopamine-modified multiwalled carbon nanotubes (PDA-CNTs) are added into the polyurethane/polysiloxane matrix, and a series of selfadhesive and heat-resistant conductive adhesives are successfully prepared under UV irradiation. As a result, the conductivity and thermal stability of PSAs are refined as expected. Especially when the content of PDA-CNTs is 4 wt%, the conductivity reaches 1.2 ? 10-5 S/cm. Comparing to pure polymer (PUA), the conductivity of PUATS4 is increased by six orders of magnitude. In addition, its heat resistance is also improved, and the carbon residue rate is up to 14.5 wt% at 750 ?C. These excellent performances of PSAs will be beneficial to the applications in conductivity and thermal stability in the future.

引用

页数：11

共 30 条

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