Structure characteristics and hygrothermal performance of silica aerogel composites for building thermal insulation in humid areas

气凝胶 材料科学 复合材料 保温 热导率 水分 纤维 湿度 复合数 热的 摩尔吸收率 热力学 光学 物理 气象学 图层(电子)
作者
Yanchen Liu,Huijun Wu,Yuhui Zhang,Jianming Yang,Fu‐An He
出处
期刊:Energy and Buildings [Elsevier BV]
卷期号:228: 110452-110452 被引量:53
标识
DOI:10.1016/j.enbuild.2020.110452
摘要

Building thermal insulation can enhance the thermal environment of buildings, thus decreasing energy consumption. Traditional inorganic insulation materials are easy to absorb moisture so that their insulation performance is reduced significantly when they are used in humid environment. It is of great significance to develop new building insulation materials with low moisture absorption and high thermal insulation. In this paper, sol-gel method and ambient pressure drying were used to prepare polyester fiber felt/silica aerogel composite thermal-insulation material. The hydrophobic properties and the microstructure of the aerogel composites were characterized. Moreover, the water-vapor transmission rate and the moisture absorption rate of the aerogel composites and the fiber felt in various humidity conditions were measured. Transient thermal plane method was applied to the measurement of the thermal conductivity. The thermal conductivity and moisture absorptivity of the polyester fiber felt increased significantly with the increase of ambient humidity. After being composited with silica aerogel, both moisture absorptivity and thermal conductivity decreased significantly and kept small value even in high humidity. The moisture absorption rate of the composites is approximately 1%, and the thermal conductivity is 0.0176–0.0187 W·m−1·K−1. Therefore, the prepared fiber felt/silica aerogel composites could be widely used for building insulation even in humid areas.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
lll发布了新的文献求助10
1秒前
2秒前
sc30完成签到 ,获得积分10
2秒前
猪猪发布了新的文献求助10
3秒前
科研渣渣茜完成签到,获得积分10
3秒前
科目三应助XXJ采纳,获得10
7秒前
7秒前
8秒前
王莉完成签到,获得积分20
9秒前
orixero应助852采纳,获得20
9秒前
量子星尘发布了新的文献求助10
9秒前
旷野发布了新的文献求助20
12秒前
没有蛀牙发布了新的文献求助10
13秒前
然然完成签到,获得积分10
13秒前
传奇3应助Richard采纳,获得10
13秒前
15秒前
sky发布了新的文献求助10
17秒前
奋斗绿旋完成签到,获得积分10
18秒前
科研通AI5应助3s采纳,获得10
19秒前
19秒前
20秒前
王莉关注了科研通微信公众号
20秒前
20秒前
llll发布了新的文献求助10
20秒前
xi完成签到,获得积分10
22秒前
22秒前
22秒前
小二郎应助hyr采纳,获得10
22秒前
CipherSage应助青水采纳,获得30
23秒前
感动的薄荷完成签到,获得积分10
25秒前
高高黄豆完成签到,获得积分10
25秒前
乌云发布了新的文献求助10
25秒前
ttttt完成签到,获得积分10
26秒前
太叔明辉发布了新的文献求助10
26秒前
27秒前
Coral.发布了新的文献求助10
28秒前
ttttt发布了新的文献求助10
28秒前
Akim应助科研通管家采纳,获得10
28秒前
小马甲应助科研通管家采纳,获得10
28秒前
传奇3应助科研通管家采纳,获得10
28秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976210
求助须知:如何正确求助?哪些是违规求助? 3520366
关于积分的说明 11203088
捐赠科研通 3256965
什么是DOI,文献DOI怎么找? 1798570
邀请新用户注册赠送积分活动 877738
科研通“疑难数据库(出版商)”最低求助积分说明 806516