期刊
POLYMER
卷 123, 期 -, 页码 311-320出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2017.07.030
关键词
Aromatic thermosetting copolyester; Nanocomposite foam; Carbon nanofillers; In-situ polymerization; Thermal degradation stability; Compressive mechanical strength
资金
- National Science Foundation (NSF) I/UCRC [IIP-1362146]
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [1362146] Funding Source: National Science Foundation
In this study, we present carbon nanoparticle incorporated high-performance aromatic thermosetting copolyester (ATSP) nanocomposite foams. The ATSP nanocomposite foams were fabricated through a facile solid-state mixing method wherein carboxylic acid and acetoxy-functional group oligomers were initially combined with chemically pristine carbon nanofillers separately, while in powder form. The mixtures were then subjected to a thermal condensation polymerization reaction in which the constituent oligomers formed the ester backbone of the ATSP matrix and advanced the molecular weight while acetic acid was emitted as the by-product, and generated a porous nanocomposite morphology. As compared to a neat ATSP foam, the nanocomposite foams exhibited a reduced coefficient of thermal expansion by 25% to 75 x 10(-6) degrees C-1. Thermal stability temperature at 5% mass loss was increased by 30 degrees C exceeding 500 degrees C. Compressive mechanical strength was enhanced two-fold, reaching 16 MPa along with a nearly doubled fracture strain, which ultimately yielded improved material toughness. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据