蓖麻油基聚氨酯预聚体改性酚醛泡沫的制备及表征

doi:10.3969/j.issn.0253-2417.2015.04.002

林产化学与工业 ›› 2015, Vol. 35 ›› Issue (4): 8-14.doi: 10.3969/j.issn.0253-2417.2015.04.002

蓖麻油基聚氨酯预聚体改性酚醛泡沫的制备及表征

薄采颖¹, 胡立红^1,2, 周静¹, 周永红¹

1.中国林业科学研究院林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室, 江苏南京 210042;
2.中国林业科学研究院林业新技术研究所, 北京 100091

收稿日期:2014-08-19 出版日期:2015-08-25 发布日期:2015-08-29
通讯作者: 周永红,研究员,博士,博士生导师,主要从事生物质化学转化与应用研究;E-mail:zyh@icifp.cn。 E-mail:zyh@icifp.cn
作者简介:薄采颖(1984—),女,江苏东海人,助理研究员,博士生,主要从事生物质资源转化与利用研究;E-mail:newstar2002@163.com
基金资助:
国家863计划资助(2013AA050703)

Preparation and Characterization of Phenolic Foams Modified by Castor Oil-based Polyurethane Prepolymer

BO Cai-ying¹, HU Li-hong^1,2, ZHOU Jing¹, ZHOU Yong-hong¹

1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab.for Biomass Chemical Utilization;Key and Open Lab.of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China

Received:2014-08-19 Online:2015-08-25 Published:2015-08-29

摘要/Abstract

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。

关键词: 酚醛泡沫, 聚氨酯预聚体, 结构, 机械性能, 热稳定性

Abstract: 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 ¹H 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.

Key words: phenolic foams, polyurethane prepolymer, structure, mechanical properties, thermal stability

中图分类号:

TQ35

薄采颖, 胡立红, 周静, 周永红. 蓖麻油基聚氨酯预聚体改性酚醛泡沫的制备及表征[J]. 林产化学与工业, 2015, 35(4): 8-14.

BO Cai-ying, HU Li-hong, ZHOU Jing, ZHOU Yong-hong. Preparation and Characterization of Phenolic Foams Modified by Castor Oil-based Polyurethane Prepolymer[J]. Chemistry and Industry of Forest Products, 2015, 35(4): 8-14.

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蓖麻油基聚氨酯预聚体改性酚醛泡沫的制备及表征

Preparation and Characterization of Phenolic Foams Modified by Castor Oil-based Polyurethane Prepolymer

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