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[1]李夏菲,冯坚,冯军宗,等.原料配比对间苯二酚-甲醛气凝胶性能的影响[J].南京工业大学学报(自然科学版),2016,38(02):56-59.[doi:10.3969/j.issn.1671-7627.2016.02.011]
 LI Xiafei,FENG Jian,FENG Junzong,et al.Effects of raw material ratio on performance of resorcinol-formaldehyde aerogel[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(02):56-59.[doi:10.3969/j.issn.1671-7627.2016.02.011]
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原料配比对间苯二酚-甲醛气凝胶性能的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年02期
页码:
56-59
栏目:
出版日期:
2016-04-10

文章信息/Info

Title:
Effects of raw material ratio on performance of resorcinol-formaldehyde aerogel
文章编号:
1671-7627(2016)02-0056-04
作者:
李夏菲冯坚冯军宗姜勇刚
国防科学技术大学 新型陶瓷纤维及其复合材料重点实验室,湖南 长沙 410073
Author(s):
LI XiafeiFENG JianFENG JunzongJIANG Yonggang
Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology,Changsha 410073,China
关键词:
RF气凝胶 密度 收缩率 力学性能 热物理性能
Keywords:
RF aerogel density shrinkage mechanical property thermo physical property
分类号:
TH145.2
DOI:
10.3969/j.issn.1671-7627.2016.02.011
文献标志码:
A
摘要:
为获得较低热导率和较高强度的高性能隔热材料,通过常压干燥制备间苯二酚-甲醛(RF)气凝胶,研究了原料配比对气凝胶性能的影响规律。结果表明:催化剂浓度减小,气凝胶密度和收缩率减小,同时强度降低; 反应物浓度减小,气凝胶密度和收缩率增大,强度也增大,但热导率降低。制备的气凝胶最大密度为0.847 1 g/cm3,弯曲强度提高18.2倍(从1.22 MPa增至22.26 MPa),较佳热导率为0.058~0.076 W/(m·K)。
Abstract:
In order to acquire thermal insulators with low thermal conductivity and high strength,resorcinol-formaldehyde(RF)aerogel was prepared through atmospheric drying.The effects of material ratio on performance of RF aerogel were investigated.Results showed that both the shrinkage and density of RF aerogel decreased and the strength reduced with decreasing catalyst concentration.With decreasing reactant concentration,and density,and shrinkage, the strength of RF increased.The maximum density of aerogel was 0.847 1 g/cm3 while the bend strength increased by 18.2 times(from 1.22 MPa to 22.26 MPa),and the suitable thermal conductivity was 0.058-0.076 W/(m·K).

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备注/Memo

备注/Memo:
收稿日期:2015-10-20
基金项目:国家自然科学基金(51172279,51302317); 湖南省高校科技创新团队支持计划; 国防科学技术大学陶瓷纤维与复合材料技术创新群体
作者简介:李夏菲(1990—),女,陕西西安人,博士生,主要研究方向为高性能隔热材料; 冯坚(联系人),研究员,E-mail:fengj@nudt.edu.cn.
引用本文:李夏菲,冯坚,冯军宗,等.原料配比对间苯二酚-甲醛气凝胶性能的影响[J].南京工业大学学报(自然科学版),2016,38(2):56-59..
更新日期/Last Update: 2016-03-20