期刊
NEW JOURNAL OF CHEMISTRY
卷 46, 期 25, 页码 11985-11993出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nj00671e
关键词
-
This study improves the mechanical and flame retardant properties of rigid polyurethane foam (RPUF) by using biomass polydopamine (PDA) modified inorganic flame retardant aluminum hydroxide (ATH), which enhances the interaction between ATH and the matrix.
The application safety of rigid polyurethane foam (RPUF) is greatly restricted by its flammable characteristics, and the existing inorganic flame retardants have dispersibility and compatibility problems with organic matrices. Taking advantage of the good coating performance and chemical structure of biomass polydopamine (PDA), an inorganic additive flame retardant aluminium hydroxide (ATH) with biomass surface modification was prepared. The effects of unmodified and silane coupling agent modified flame retardants on the thermal, mechanical, and flame retardant properties of RPUF were compared. The study found that the overall performance of the composite material was maximized by PDA by enhancing the interaction between ATH and the matrix. Compared with RPUF and RPUF/ATH, the compressive strength of RPUF/ATH@PDA increased by 3.4% and 10.0%, respectively, and the ultimate flexural strength surged by 26.5% and 30.3%. Compared with RPUF and RPUF/ATH, the addition of ATH@PDA reduced the peak heat release rate of RPUF composites by 39.9% and 24.9%, and the total heat release by 33.6% and 31.9%. In addition, PDA promoted the conversion of RPUF to a dense and highly graphitized carbon residue during combustion and reduced the flammable and harmful gases in the combustion gas. It played a crucial role in the condensed and gas phases, which minimized the fire hazard of RPUF.
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