High thermal conductivity polylactic acid composite for 3D printing: Synergistic effect of graphene and alumina
High thermal conductivity polylactic acid composite for 3D printing: Synergistic effect of graphene and alumina
复制标题
用于3D打印的高导热聚乳酸复合材料：石墨烯和氧化铝的协同效应
DOI：
10.1002/pat.4858
复制
发表时间：
2020-02-03
影响因子：
3.4
通讯作者：
Bai, Shibing
中科院分区：
文献类型：
--
作者：
Jiang, Jun;Yang, Shuangqiao;Bai, Shibing
With the continuous development of the electronics industry, in order to meet the requirements of electronic equipment to reduce the size and increase power consumption, the development of high thermal conductivity materials is crucial. In this study, thermally conductive polylactic acid (PLA) composites were prepared by constructing graphene and alumina (Al2O3) hybrid filler network, and it was further successfully used in additive manufacturing. Due to the synergistic effect of Al2O3 and graphene, the resulting composite achieved the thermal conductivity of 2.4 Wm(-1) K-1 with 70 wt% Al2O3 and 1 wt% graphene, which are superior to data reported in the literature in the same filler condition. The Al2O3 and graphene hybrid filler network reduced the agglomeration of graphene and the thermal contact resistance between the fillers, thereby leading a faster cooling rate. Furthermore, the obtained thermally conductive PLA composite has good thermal stability at a normal temperature. The PLA composite powder obtained by the cryogenic pulverization can be used in the laser sintering additive manufacturing process to prepare a heat conductive material with a complicated shape.
