塑料科技2026，Vol.54Issue(3)：81-86,6.DOI:10.15925/j.cnki.issn1005-3360.2026.03.014
含磷多元醇与壳聚糖-海藻酸钠复合涂层对软质聚氨酯泡沫的协同阻燃机理
Synergistic Flame Retardant Mechanism of Phosphorus-containing Polyols and Chitosan-Sodium Alginate Composite Coating on Flexible Polyurethane Foam
郭敦志 1高纳川 1闫莉 1桑晓明1
作者信息
- 1. 华北理工大学材料科学与工程学院,河北 唐山 063210||河北省无机非金属材料重点实验室,河北 唐山 063210||唐山市功能高分子材料重点实验室,河北 唐山 063210
- 折叠
摘要
Abstract
Flexible polyurethane foam(FPUF)was prepared by partially replacing the polyether polyol in the white component with phosphorus-containing polyol(OP550),followed by surface flame-retardant treatment using a composite gel coating composed of chitosan(CS)and sodium alginate(SA).The synergistic flame-retardant effect of OP550 and the composite coating on FPUF was systematically investigated.The results indicated that under the synergistic action of OP550 and the composite coating,FPUF achieved self-extinguishment upon removal of the ignition source without melt dripping.Compared with pure FPUF,the sample containing 20%OP550 with surface treatment by CS-SA composite coating exhibited reductions of 54.5%and 20.7%in peak heat release rate and total heat release,respectively.The flame-retardant mechanism involved the thermal decomposition of OP550 producing gas-phase flame-retardant effects.In the presence of the composite coating,phosphorus-containing species promoted dehydration and carbonization of the char layer,forming a dense char structure,thereby achieving synergistic enhancement between gas-phase and condensed-phase flame retardation.关键词
软质聚氨酯泡沫/协同阻燃/含磷多元醇/壳聚糖-海藻酸钠Key words
FPUF/Synergistic flame retardancy/Phosphorus-containing polyol/CS-SA分类
化学化工引用本文复制引用
郭敦志,高纳川,闫莉,桑晓明..含磷多元醇与壳聚糖-海藻酸钠复合涂层对软质聚氨酯泡沫的协同阻燃机理[J].塑料科技,2026,54(3):81-86,6.
