Preparation of Boron Nitride-Coated Carbon Fibers and Synergistic Improvement of Thermal Conductivity in Their Polypropylene-Matrix Composites

被引：18

作者：

Badakhsh, Arash ^{[1
,2
]}

Han, Woong ^{[1
,3
]}

Jung, Sang-Chul ^{[4
]}

An, Kay-Hyeok ^{[5
]}

Kim, Byung-Joo ^{[1
]}

机构：

[1] Korea Inst Carbon Convergence Technol, Res Lab Multifunct Carbon Mat, Jeonju 54853, South Korea

[2] Chonbuk Natl Univ, Dept Mech Design Engn, Jeonju 54896, South Korea

[3] Chonbuk Natl Univ, Dept Organ Mat & Fiber Engn, Jeonju 54896, South Korea

[4] Sunchon Natl Univ, Dept Environm Engn, Sunchon 57922, South Korea

[5] Jeonju Univ, Dept Carbon & Nano Mat Engn, Jeonju 55069, South Korea

来源：

POLYMERS | 2019年 / 11卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

carbon fiber; boron nitride; coating; polymer-matrix composites; thermal properties; electrical resistivity; MECHANICAL-PROPERTIES; THIN-FILMS; BN FILMS; ENHANCEMENT; BORAZINE; AMMONIA; BORANE; PHASE; CVD;

D O I：

10.3390/polym11122009

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 purpose of this study is to prepare boron nitride (BN)-coated carbon fibers (CF) and to investigate the properties of as-prepared fibers as well as the effect of coating on their respective polymer-matrix composites. A sequence of solution dipping and heat treatment was performed to blanket the CFs with a BN microlayer. The CFs were first dipped in a boric acid solution and then annealed in an ammonia-nitrogen mixed gas atmosphere for nitriding. The presence of BN on the CF surface was confirmed using FTIR, XPS, and SEM analyses. Polypropylene was reinforced with BN-CFs as the first filler and graphite flake as the secondary filler. The composite characterization indicates approximately 60% improvement in through-plane thermal conductivity and about 700% increase in the electrical resistivity of samples containing BN-CFs at 20 phr. An increase of two orders of magnitude in the electrical resistivity of BN-CF monofilaments was also observed.

引用

页数：13

共 46 条

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