家电科技Issue(z1)：166-173,8.DOI:10.19784/j.cnki.issn1672-0172.2023.99.038
含小分子发泡剂的硬质聚氨酯泡沫塑料性能老化研究
Study on aging properties of rigid polyurethane foam with small molecule blowing agent
王诗文 1范才全 2王永帅 2张向平 2叶俊 1朱霞林1
作者信息
- 1. 万华化学(宁波)容威聚氨酯有限公司 浙江宁波 315812
- 2. 海信冰箱有限公司 山东青岛 266100
- 折叠
摘要
Abstract
After adding different proportions of n-butane(HC-R600)to the mixed component foaming system of cyclopentane(CP)and HFC-245fa,the performance changes of rigid polyurethane foams prepared in a mold and the variation laws of thermal conductivity(k-factor)and compressive strength under two different aging conditions with different aging time were studied.Then compare the above variations of k-factor with the changes under the natural aging in a refrigerator.The research showed that the fluidity was improved and the k-factor increased with the increasing contents of blowing agent R600,while the compressive strength remained stable.During different aging processes,the results of k-factor were similar,and the changes in compressive strength were inconsistent,but there were acceleration relationship between them.The changes in k-factor of the refrigerator were significantly less than the changes in mold foams within the same aging time under different aging conditions.关键词
低沸点小分子/R600/聚氨酯泡沫塑料/发泡剂/泡沫性能/老化性能Key words
Small molecule with low boiling point/R600/Polyurethane foam/Blowing agent/Foam performance/Aging performance分类
通用工业技术引用本文复制引用
王诗文,范才全,王永帅,张向平,叶俊,朱霞林..含小分子发泡剂的硬质聚氨酯泡沫塑料性能老化研究[J].家电科技,2023,(z1):166-173,8.
