Performance of Thermal Conductive High Density Polyethylene Composite

doi:10.19894/j.issn.1000-0518.210019

Chinese Journal of Applied Chemistry ›› 2021, Vol. 38 ›› Issue (8): 954-960.DOI: 10.19894/j.issn.1000-0518.210019

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Performance of Thermal Conductive High Density Polyethylene Composite

LI Yi¹, CHENG Hong-Da¹, YU Yan-Cun², HAN Chang-Yu^2*, CHEN Guang-Jian³, ZHU Ying-Nan³

¹School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
²Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
³Jilin Mekoo Pipe Systems Co., Ltd., Changchun 130012, China

Received:2021-01-02 Revised:2021-04-28 Published:2021-08-01 Online:2021-10-01

Abstract

Abstract: High-density polyethylene (HDPE)/boron nitride (BN) composites with higher thermal conductivity were prepared by melt blending. Through the study of phase morphology, thermal, rheological and mechanical properties and thermal conductivity, the influence of the BN content on the properties of HDPE/BN composites was discussed. The results show that the BN particles gradually aggregate to form heat conduction channels with the increase of the mass content of BN. When the mass content of BN is increased to 30%, the thermal conductivity of the HDPE/BN composite reaches 1.00 W/(m·K) and is increased by 156% compared with pure HDPE. At the same time, the elastic modulus of the composites is increased by 75%, the cold crystallization temperature increases 1.5 ℃, and the melt viscosity and modulus are increased twice compared to pure HDPE. It is proved that BN not only improves the rheological properties and cold crystallization of HDPE, but also increases the thermal conductivity and elastic modulus.

Key words: High-density polyethylene, Boron nitride, Composites, Thermal conductivity

CLC Number:

O632

LI Yi, CHENG Hong-Da, YU Yan-Cun, HAN Chang-Yu, CHEN Guang-Jian, ZHU Ying-Nan. Performance of Thermal Conductive High Density Polyethylene Composite[J]. Chinese Journal of Applied Chemistry, 2021, 38(8): 954-960.

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Performance of Thermal Conductive High Density Polyethylene Composite

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