期刊
NEW JOURNAL OF CHEMISTRY
卷 43, 期 16, 页码 6136-6145出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj00782b
关键词
-
资金
- Natural Science Foundation of Jilin Province [20180101197jc]
A phenyl group was introduced into the polymeric network of polysiloxane foam for the improvement of its thermal insulation capacity and thermal stability. Phenyl-containing polysiloxane was prepared via ring-opening polymerization, and phenyl-containing polysiloxane foam was fabricated through simultaneous foaming and crosslinking reactions. With increasing phenyl content, the thermal conductivity of the polysiloxane foam decreased from 0.093 W m(-1) K-1 to 0.079 W m(-1) K-1. When the phenyl content was 6.15 mol%, the average cell diameter decreased from 384 m to 165 m and the cell density increased from 0.58 x 10(8) cells per cm(3) to 4.67 x 10(8) cells per cm(3). When the phenyl content was 8.5 mol%, the cell morphology became imperfect and the average cell diameter and cell density reached 259 m and 1.29 x 10(8) cells per cm(3), respectively. TGA results revealed the improved thermal stability of the polysiloxane foam. The TGA curves under nitrogen and air conditions could be divided into three stages. Under nitrogen conditions, the mass loss of the maximum decomposition stage decreased and the residue at 800 degrees C slightly increased. Under air conditions, the maximum decomposition temperatures of the three stages increased. The compressive strength and specific compressive strength were measured and showed a downward trend.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据