Polyurethane rigid foams formed from different soy-based polyols by the ring opening of epoxidised soybean oil with methanol, phenol, and cyclohexanol

被引：87

作者：

Ji, Dong ^{[1
,2
]}

Fang, Zheng ^{[3
]}

He, Wei ^{[1
]}

Luo, Zhenyang ^{[4
]}

Jiang, Xiubo ^{[3
]}

Wang, Tingwei ^{[2
]}

Guo, Kai ^{[1
,5
]}

机构：

[1] Nanjing Tech Univ, Coll Biotechnol & Pharmaceut Engn, Nanjing 211816, Jiangsu, Peoples R China

[2] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 210009, Jiangsu, Peoples R China

[3] Nanjing Tech Univ, Sch Pharmaceut Sci, Nanjing 211816, Jiangsu, Peoples R China

[4] Nanjing Forestry Univ, Coll Sci, Nanjing 210037, Jiangsu, Peoples R China

[5] Nanjing Tech Univ, Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2015年 / 74卷

基金：

中国国家自然科学基金;

关键词：

Soy-based polyol; Polyurethane foam; Phenol; Cyclohexanol; Dangling chain; VEGETABLE-OILS; MECHANICAL-PROPERTIES; PHYSICAL-PROPERTIES; COMPOSITES; LIGNIN;

D O I：

10.1016/j.indcrop.2015.04.041

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Three polyols (Polyol-M, Polyol-P, and Polyol-C) were synthesised from epoxidised soybean oil by oxirane ring opening with methanol, phenol, and cyclohexanol, and their corresponding polyurethane rigid foams (PU-M, PU-P, and PU-C) were prepared by mixing the soy-based polyol with petroleum-based polyether polyols. At identical soy-based polyol content, PU-P had the greatest density, the smallest cell size, and the highest thermal conductivity. At 25 wt% of soy-based polyol content, the introduction of phenol resulted in the improvement of the compression strength, the thermal stability, and the glass-transition temperature of the bio-foam. However, when the soy-based polyol content was increased to 50 wt%, the poor performance of PU-P was due to the low crosslink density caused by high steric hindrance of excessive benzene rings. The introduction of cyclohexanol failed to improve the properties of the bio-foam. The aliphatic six-membered ring acted as a plasticiser and could not alleviate the drawbacks created by the dangling chains. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：76 / 82

页数：7