文献类型：期刊文献

中文题名：蓖麻油基聚氨酯预聚体改性酚醛泡沫的制备及表征(英文)

英文题名：Preparation and Characterization of Phenolic Foams Modified by Castor Oil-based Polyurethane Prepolymer

作者：薄采颖[1,2,3,4] 胡立红[1,2,3,4,5] 周静[1,2,3,4] 周永红[1,2,3,4]

第一作者：薄采颖

通信作者：Zhou, Yong-Hong

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室;[5]中国林业科学研究院林业新技术研究所

年份：2015

卷号：35

期号：4

起止页码：8-14

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：CSTPCD;;EI(收录号：20153901314613);Scopus(收录号：2-s2.0-84942242657);北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家863计划资助(2013AA050703)

语种：中文

中文关键词：酚醛泡沫;聚氨酯预聚体;结构;机械性能;热稳定性

外文关键词：phenolic foams ; polyurethane prepolymer ; structure; mechanical properties ; thermal stability

分类号：TQ35

摘要：以蓖麻油（CTO）和1,6-己二异氰酸酯（HDI）为原料合成蓖麻油基聚氨酯预聚体（COPUP）,并采用COPUP对酚醛泡沫进行改性。通过FT-IR和1H NMR对COPUP结构进行了鉴定和表征,进一步采用SEM、万能试验机结合热重分析仪研究了COPUP添加量对酚醛泡沫的形态、机械性能和热稳定性的影响。结果表明：COPUP改性的酚醛泡沫泡孔均匀,但与纯酚醛泡沫相比,COPUP改性酚醛泡沫的泡孔较大,当COPUP添加量为10%时,泡沫的泡孔反而被破坏;当COPUP添加量为3%-7%时,改性酚醛泡沫与纯酚醛泡沫相比弯曲强度增加了21.05%-26.32%,比弯曲强度从5.90（kN·m）/kg增加到6.17（kN·m）/kg,高于纯酚醛泡沫4.96（kN·m）/kg;随着COPUP添加量的增加,泡沫的热稳定性略有下降。
Castor oil-based polyurethane prepolymer（COPUP） was prepared through the reaction of castor oil （CTO） with 1,6-hexamethylene diisocyanate（ HDI）, then COPUP was used to modify phenolic foams（PFs）. The structure of COPUP was confirmed by FT-IR and J H NMR. Morphological properties, mechanical properties and thermal stability of the copup-filled PFs were assessed by SEM, universal test and thermogravimetric analysis （TGA）. The cell shapes of the COPUP- filled PFs were approximately symmetrical, but the cell sizes were larger than that of pristine PF. Especially, when the cell sizes of PF modified with 10 % COPUP, it became obviously heterogeneous and the bubbles collapse. Compared with that of pristine PFs, the flexural strength of PFs filled with 3% - 7% COPUP increased about 21.05% - 26.32% ; and the corresponding specific flexural strength ranged from 5.90 to 6.17 （kN. m）/kg, which were significantly higher than that of the pristine PFs, 4.96（kN-m）/kg. The addition of COPUP caused the decrease of the thermal stability of PFs.