具有卓越热管理能力的热固性复合材料中热传导性纳米金刚石点缀的石墨纳米片杂化物的作用

Implication of thermally conductive nanodiamond-interspersed graphite nanoplatelet hybrids in thermoset composites with superior thermal management capability.

作者信息

Zhang Yinhang, Park Mira, Park Soo-Jin

机构信息

Department of Chemistry, Inha University, 100 Inharo, Incheon, 22212, Korea.

Department of Bioenvironmental Chemistry, College of Agriculture & Life Science, Chonbuk National University, Jeonju, 54896, South Korea.

出版信息

Sci Rep. 2019 Feb 27;9(1):2893. doi: 10.1038/s41598-019-39127-z.

DOI:10.1038/s41598-019-39127-z

PMID:30814624

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6393528/

Abstract

Novel hybrid nanofillers composed of nanodiamond-attached graphite nanoplatelets (ND@GNPs) were designed and employed to toughen the epoxy (EP) matrix for fabricating superior thermal conductive and physically robust thermoset nanocomposites for electronics and auto industries. The hybrid nanofiller was covalently bonded by 4,4'-diphenylmethane diisocyanate and it provided distinct enhancement in thermal conductivity and dynamic storage modulus of the EP/ND@GNPs nanocomposites attributing to the unique nanostructure of ND@GNPs that can form strong interfacial interaction with EP matrix, thus restrict the EP molecular motions. The EP/ND@GNPs20 presented a thermal conductivity of 2.48 W · m · K and dynamic storage modulus of 5.6 GPa. The presence of ND particles not only can enhance heat transfer efficiency but also improve the interfacial interaction between ND and EP matrix, which can directly affect physical properties of the EP composites.

摘要

设计并采用了由纳米金刚石附着的石墨纳米片（ND@GNPs）组成的新型混合纳米填料，以增韧环氧树脂（EP）基体，从而制造出用于电子和汽车行业的具有卓越导热性和物理强度的热固性纳米复合材料。该混合纳米填料通过4,4'-二苯基甲烷二异氰酸酯共价键合，由于ND@GNPs独特的纳米结构能够与EP基体形成强烈的界面相互作用，从而限制EP分子运动，使得EP/ND@GNPs纳米复合材料的导热率和动态储能模量有显著提高。EP/ND@GNPs20的导热率为2.48W·m·K，动态储能模量为5.6GPa。ND颗粒的存在不仅可以提高传热效率，还能改善ND与EP基体之间的界面相互作用，这直接影响到EP复合材料的物理性能。