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摘要
以液化MDI(MM103)、聚己内酯二醇(PCL)和1,6-己二醇(HDO)为主要原料,水为发泡剂,二氯一氟乙烷为共发泡剂,三乙胺和二月桂酸二丁基锡为催化剂,合成了形状记忆聚氨酯泡沫(SMPUF),然后通过压制得到具有膨胀效果的密封海绵。通过密度测试、差示扫描量热测试和形状记忆性能测试研究了形状记忆泡沫及密封海绵的性能。结果表明,密封海绵密度为1.1g/cm3,形状恢复温度为80℃,且其形状记忆性能优异,能够满足装配式建筑缝隙密封使用要求。
Abstract
Shape memory polyurethane foams (SMPUF) were synthesized using the materials as follows:liquefied MDI (MM103),polycaprolactone diol (PCL) and 1,6-hexanediol (HDO) as the main raw materials,together with water and dichlorofluoroethane as co-blowing agents,and triethylamine and dibutyltin dilaurate as catalysts.Then the sealing foam were prepared by pressing the synthesized SMPUF.The properties of SMPUF and sealing foam were investigated by density testing,differential scanning calorimetry,and shape memory performance testing.The results showed that the density of the foam was 1.1g/cm3,the shape recovery temperature was 80℃.The foam had an excellent shape memory performance,which could meet the sealing requirement of prefabricated building.
关键词
聚氨酯
/
泡沫
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形状记忆
/
发泡剂
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装配式建筑
Key words
polyurethane
/
foam
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shape memory
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foaming agent
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prefabricated building
装配式建筑用密封海绵的制备及性能研究[J].
化工新型材料, 2020, 48(7): 164-166 DOI:10.19817/j.cnki.issn 1006-3536.2020.07.037
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