4.3 Article

Semi-Rigid Polyurethane Foam and Polymethylsilsesquioxane Aerogel Composite for Thermal Insulation and Sound Absorption

期刊

MACROMOLECULAR RESEARCH
卷 30, 期 4, 页码 245-253

出版社

POLYMER SOC KOREA
DOI: 10.1007/s13233-022-0026-8

关键词

semi-rigid polyurethane; polymethylsilsesquioxane aerogel; fluoric surfactant; thermal insulation

资金

  1. National Research Foundation of Korea (NRF) - Korea Government (MSIT) [2020R1A5A1019131]
  2. Technology Innovation Program - Ministry of Trade, Industry and Energy (MOTIE, Korea) [10080492]
  3. Korea Evaluation Institute of Industrial Technology (KEIT) [10080492] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

In this study, a semi-rigid polyurethane foam/aerogel composite was prepared for the first time using an economical and practical approach. The composite exhibited lower thermal conductivity, improved sound absorption coefficient, and enhanced hydrophobicity compared to the neat foam.
Although aerogels exhibit excellent thermal insulating properties, their high costs and poor mechanical properties have hindered their application. Semi-rigid polyurethane foams (SRPUFs) have been widely used in daily life as thermal and acoustic insulators owing to their low cost and good mechanical properties despite their poorer thermal insulating performance compared with aerogels. To utilize both aerogels and SRPUFs, in this study, we prepared a SRPUF/aerogel composite using an economical and practical approach for the first time. Specifically, a sol state of polymethylsilsesquioxane (PMSQ) was prepared via the hydrolysis of methyltrimethoxysilane under acidic conditions, followed by the gelation of PMSQ on the surface of SRPUF under basic conditions to yield the SRPUF/aerogl composite. The fabricated SRPUF/aerogel composite with 63 phr (parts per hundred resin) of PMSQ aerogel exhibits promising properties, including a decline in the thermal conductivity from 41.0 to 36.0 mW/m.K and an improvement in the average sound absorption coefficient at higher frequency range from 0.57 to 0.67 compared with neat SRPUF. Moreover, the composite exhibits enhanced hydrophobicity, which is crucial for preserving the structural, thermal, and acoustic features of the composite in use. Hence, we expect that this study will set a precedent for the utilization of the excellent thermal properties of aerogels for various applications.

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。

评论

主要评分

4.3
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据