期刊
POLYMER
卷 52, 期 13, 页码 2840-2846出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2011.04.040
关键词
Polyurethane foam; Soybean oil-based polyol; Thermal conductivity
资金
- Cargill Incorporated
- IREE (Initiative for Renewable Energy and the Environment)
Polyurethane (PU) rigid foams were synthesized by substituting a polypropylene-based polyol with soybean oil-based polyol (SBOP). All the soy-based foams maintained a regular cell structure and had even smaller average cell size than the control foams. The density of soy-based foams was within 5% of the controls, except that the density of foams from 100% SBOP was 17% higher. Soy-based foams also had comparable initial thermal conductivity (k value) and closed cell content, higher T-g and compressive strength. However, while foams from 50% SBOP showed similar increase in k value to the 0% SBOP foams, under accelerated aging conditions, the 100% SBOP foams aged faster. Gas permeation tests performed on PU thin films showed higher N-2 permeation for PU thin films made from SBOP which is believed to be the cause of accelerated thermal aging. (c) 2011 Elsevier Ltd. All rights reserved.
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