混合MoS/h-BN纳米填料作为环氧纳米复合材料中的协同散热和增强添加剂

Hybrid MoS/h-BN Nanofillers As Synergic Heat Dissipation and Reinforcement Additives in Epoxy Nanocomposites.

作者信息

Ribeiro Hélio, Trigueiro João Paulo C, Silva Wellington M, Woellner Cristiano F, Owuor Peter S, Cristian Chipara Alin, Lopes Magnovaldo C, Tiwary Chandra S, Pedrotti Jairo J, Villegas Salvatierra Rodrigo, Tour James M, Chopra Nitin, Odeh Ihab N, Silva Glaura G, Ajayan Pulickel M

机构信息

Department of Materials Science and Nanoengineering - Rice University . 6100 Main Street , Houston , Texas 77005 , United States.

Departamento de Química - Universidade Federal de Minas Gerais . Avenida Antônio Carlos, 6627, Pampulha , CEP 31270-901 , Belo Horizonte , Minas Gerais , Brazil.

出版信息

ACS Appl Mater Interfaces. 2019 Jul 10;11(27):24485-24492. doi: 10.1021/acsami.7b09945. Epub 2017 Sep 26.

DOI:10.1021/acsami.7b09945

PMID:28920429

Abstract

Two-dimensional (2D) nanomaterials as molybdenum disulfide (MoS), hexagonal boron nitride (h-BN), and their hybrid (MoS/h-BN) were employed as fillers to improve the physical properties of epoxy composites. Nanocomposites were produced in different concentrations and studied in their microstructure, mechanical and thermal properties. The hybrid 2D mixture imparted efficient reinforcement to the epoxy leading to increases of up to 95% in tensile strength, 60% in ultimate strain, and 58% in Young's modulus. Moreover, an enhancement of 203% in thermal conductivity was achieved for the hybrid composite as compared to the pure polymer. The incorporation of MoS/h-BN mixture nanofillers in epoxy resulted in nanocomposites with multifunctional characteristics for applications that require high mechanical and thermal performance.

摘要

二维（2D）纳米材料，如二硫化钼（MoS）、六方氮化硼（h-BN）及其混合物（MoS/h-BN）被用作填料，以改善环氧复合材料的物理性能。制备了不同浓度的纳米复合材料，并对其微观结构、力学性能和热性能进行了研究。二维混合材料为环氧树脂提供了有效的增强作用，使拉伸强度提高了95%，极限应变提高了60%，杨氏模量提高了58%。此外，与纯聚合物相比，混合复合材料的热导率提高了203%。在环氧树脂中加入MoS/h-BN混合纳米填料，得到了具有多功能特性的纳米复合材料，可用于需要高机械性能和热性能的应用场合。