摘要
用双酚 A型环氧树脂与乙酸反应，合成了具有刚性骨架的环氧树脂加成多元醇 (EAP)，并用 FTIR与 1H－ NMR对其进行了表征。研究结果表明，工业聚醚多元醇中添加 EAP后制备的全水发泡软质聚氨酯（ PU）泡沫塑料的压入硬度显著提高，但回弹性不变。进一步研究了不同水用量对所制备 PU软质泡沫塑料力学性能的影响，并用 FTIR和光学显微镜考察了 PU软质泡沫塑料中脲基的氢键行为和泡孔结构。结果表明，在 PU软质泡沫塑料中引入 EAP刚性链对 PU泡沫塑料的结构及性能有很大影响。
A new kind of epoxy resin adduct polyol(EAP) with rigid backbone was synthesized by the reaction of bisphenol－ A type epoxy resin with acetic acid and characterized with FTIR and 1H－ NMR. The results showed that the indentation hardness of flexible polyurethane(PU)foams prepared with commercial polyether polyol containing EAP as polyol and water as blowing agent increased but the resiliency of these PU foams did not decrease. The effect of water amount on the mechanical properties of flexible PU foams was further studied and the hydrogen bonding behavior of urea as well as the cell structure of the flexible PU foams were also observed with FTIR and optical microscope respectively. It was found that introducing the rigid backbone structure of EPA exerted a considerable influence on the structures and properties of flexible PU foams.
出处
《合成橡胶工业》
EI
CAS
CSCD
北大核心
2001年第3期139-143,共5页
China Synthetic Rubber Industry
关键词
聚氨酯
软质泡沫塑料
环氧树脂加成多元醇
脲氢键
力学性能
flexible polyurethane foam
epoxy resin adduct polyol
urea hydrogen bond
mechanical property
