Significant improvement of thermal conductivities for BNNS/PVA composite films via electrospinning followed by hot-pressing technology

被引：231

作者：

Yang, Xutong ^{[1
]}

Guo, Yongqiang ^{[1
]}

Han, Yixin ^{[1
]}

Li, Ying ^{[2
]}

Ma, Tengbo ^{[1
]}

Chen, Minjiao ^{[3
]}

Kong, Jie ^{[1
]}

Zhu, Jiahua ^{[3
]}

Gu, Junwei ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Sci, Dept Appl Chem, Shaanxi Key Lab Macromol Sci & Technol,MOE Key La, Xian 710072, Shaanxi, Peoples R China

[2] Xian Univ Sci & Technol, Coll Mat Sci & Engn, Xian 710054, Shaanxi, Peoples R China

[3] Univ Akron, Dept Chem & Biomol Engn, Intelligent Composites Lab, Akron, OH 44325 USA

来源：

COMPOSITES PART B-ENGINEERING | 2019年 / 175卷

基金：

中国国家自然科学基金;

关键词：

Polyvinyl alcohol; Boron nitride nanosheets; Electrospinning; Thermally conductive composite films; NANOCOMPOSITES; NANOPARTICLES; BN;

D O I：

10.1016/j.compositesb.2019.107070

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Research and development on polymer composites with high thermal conductivities and ideal thermal stabilities have become one of the hot topics in functional composites. In this work, boron nitride nanosheets/polyvinyl alcohol (BNNS/PVA) thermally conductive composite films were respectively prepared from ball milling (BNNS/PVA-I), directional freeze-drying (BNNS/PVA-II) and electrospinning technology (BNNS/PVA-III), followed by hot-pressing method. BNNS/PVA-III thermally conductive composite films had better comprehensive properties than that of BNNS/PVA-(I-II) composite films. Thermal conductivity coefficient in vertical direction (lambda(perpendicular to)) of the BNNS/PVA-III composite films with 30 wt% BNNS was 1.031 W/mK, obviously higher than that of BNNS/PVA-I (lambda(perpendicular to) of 0.573 W/mK) and BNNS/PVA-II (lambda(perpendicular to) of 0.694 W/mK), respectively. And the lambda in parallel direction (lambda(parallel to)) was significantly enhanced to 18.630 W/mK, increased by 3101.0% and 1437.1% compared to that of BNNS/PVA-I (lambda(parallel to) of 0.582 W/mK) and BNNS/PVA-II (lambda(parallel to) of 1.212 W/mK), respectively. Meantime, the glass transition temperature (T-g) and heat-resistance index (T-HRI) of the BNNS/PVA-III thermally conductive composite films with 30 wt% BNNS was 42.7 degrees C and 144.5 degrees C, 7.0 degrees C and 1.9 degrees C higher than that of pure PVA matrix, respectively.

引用

页数：8

共 35 条

[1] In situ formation of a cellular graphene framework in thermoplastic composites leading to superior thermal conductivity [J].

Alam, Fakhr E. ;

Dai, Wen ;

Yang, Minghui ;

Du, Shiyu ;

Li, Xinming ;

Yu, Jinhong ;

Jiang, Nan ;

Lin, Cheng-Te .

JOURNAL OF MATERIALS CHEMISTRY A, 2017, 5 (13) :6164-6169

[2] Hierarchical porous ceramics via two-stage freeze casting of preceramic polymers [J].

Arai, Noriaki ;

Faber, Katherine T. .

SCRIPTA MATERIALIA, 2019, 162 :72-76

[3] Highly Thermally Conductive Yet Electrically Insulating Polymer/Boron Nitride Nanosheets Nanocomposite Films for Improved Thermal Management Capability [J].

Chen, Jin ;

Huang, Xingyi ;

Sun, Bin ;

Jiang, Pingkai .

ACS NANO, 2019, 13 (01) :337-345

[4] Anisotropic thermally conductive composite with wood-derived carbon scaffolds [J].

Chen, Li ;

Song, Na ;

Shi, Liyi ;

Ding, Peng .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2018, 112 :18-24

[5] Enhanced thermal conductivities and decreased thermal resistances of functionalized boron nitride/polyimide composites [J].

Guo, Yongqiang ;

Lyu, Zhaoyuan ;

Yang, Xutong ;

Lu, Yuanjin ;

Ruan, Kunpeng ;

Wu, Yalan ;

Kong, Jie ;

Gu, Junwei .

COMPOSITES PART B-ENGINEERING, 2019, 164 :732-739

[6] Self-Assembling Behavior of Cellulose Nanoparticles during Freeze-Drying: Effect of Suspension Concentration, Particle Size, Crystal Structure, and Surface Charge [J].

Han, Jingquan ;

Zhou, Chengjun ;

Wu, Yiqiang ;

Liu, Fangyang ;

Wu, Qinglin .

BIOMACROMOLECULES, 2013, 14 (05) :1529-1540

[7]

Han JK, 2018, ACS APPL NANO MATER, V1, P3312

[8] Conductivity and free volume studies on bismuth sulfide/PVA:polypyrrole nanocomposites [J].

Hebbar, V ;

Ravikumar, H. B. ;

Nandimath, M. ;

Masti, S. ;

Munirathnamma, L. M. ;

Naik, J. ;

Bhajantri, R. F. .

INDIAN JOURNAL OF PHYSICS, 2019, 93 (02) :147-158

[9] Polyhedral Oligosilsesquioxane-Modified Boron Nitride Nanotube Based Epoxy Nanocomposites: An Ideal Dielectric Material with High Thermal Conductivity [J].

Huang, Xingyi ;

Zhi, Chunyi ;

Jiang, Pingkai ;

Golberg, Dmitri ;

Bando, Yoshio ;

Tanaka, Toshikatsu .

ADVANCED FUNCTIONAL MATERIALS, 2013, 23 (14) :1824-1831

[10] Thermal conducting properties of aligned carbon nanotubes and their polymer composites [J].

Ji, Tengxiao ;

Feng, Yiyu ;

Qin, Mengmeng ;

Feng, Wei .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2016, 91 :351-369

← 1 2 3 4 →