|本期目录/Table of Contents|

[1]吴学玲,张志华,沈军,等.间苯二酚-甲醛树脂基气凝胶微结构的掺杂调控[J].南京工业大学学报(自然科学版),2016,38(02):37-41.[doi:10.3969/j.issn.1671-7627.2016.02.007]
 WU Xueling,ZHANG Zhihua,SHEN Jun,et al.Microstructure modulation of resorcinol-formaldehyde resin matrix aerogel by doping[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(02):37-41.[doi:10.3969/j.issn.1671-7627.2016.02.007]
点击复制

间苯二酚-甲醛树脂基气凝胶微结构的掺杂调控()
分享到:

《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:
37-41
栏目:
出版日期:
2016-04-10

文章信息/Info

Title:
Microstructure modulation of resorcinol-formaldehyde resin matrix aerogel by doping
文章编号:
1671-7627(2016)02-0037-05
作者:
吴学玲1张志华1沈军1沈洋1王芳2关大勇1张蓉艳3姚献东3
1.同济大学 上海市特殊人工微结构材料与技术重点实验室,上海 200092; 2.上海理工大学 理学院,上海 200092; 3.纳诺科技有限公司,浙江 绍兴 312000
Author(s):
WU Xueling1ZHANG Zhihua1SHEN Jun1SHEN Yang1WANG Fang2GUAN Dayong1ZHANG Rongyan3YAO Xiandong3
1.Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology,Tongji University, Shanghai 200092,China; 2.College of Science,University of Shanghai for Science and Technology,Shanghai 200092, China; 3.Nana High-Tech Co. Ltd.,Shaoxing 312000,China
关键词:
RF树脂基气凝胶 常压干燥 线收缩率 双酚环氧树脂
Keywords:
RF resin matrix aerogel subcritical drying linear shrinkage rate bisphenol epoxy resin
分类号:
TQ427.1
DOI:
10.3969/j.issn.1671-7627.2016.02.007
文献标志码:
A
摘要:
通过掺杂双酚环氧树脂来调控间苯二酚-甲醛(RF)气凝胶的微结构,在常压干燥条件下获得线收缩率较小的树脂基气凝胶。利用场发射扫描电子显微镜(FESEM)、N2吸附-脱附比表面积与孔径分析仪等仪器对树脂基气凝胶的微观形貌、结构进行表征,用Hotdisk热分析仪测试热导率。结果表明:在常压干燥后,通过掺杂双酚环氧树脂,间苯二酚(R)与Na2CO3(C)催化剂的n(R)/n(C)值为500、间苯二酚占甲醛质量分数30%的RF树脂基气凝胶密度为0.42 g/cm3,仍能维持较好的孔结构,比表面积为421.8 m2/g,并且极大地降低了树脂基气凝胶的线收缩,线收缩率为1.5%。
Abstract:
The microstructure of resorcinol-formaldehyde(RF)aerogel was controlled by the doping of bisphenol epoxy resin.Resin matrix aerogel with tiny linear shrinkage rate was obtained by subcritical drying process.Field emission scanning electron microscopy(FESEM),surface area and pore size analyzer were used to investigate the microtopography and the microstructure of the resin-based aerogels.The thermal weight loss was analyzed by Hotdisk thermal analyzer.Results showed that with a trend to the theoretical value,the density of RF resin based aerogel doped with bisphenol epoxy resin was 0.42 g/cm3 after the drying under ambient conditions while resorcinol/sodium carbonate molar ratio was 500,and the mass fraction was 30%.Specific surface area of the resin based aerogel was 421.8 m2/g, thus maintaining a good pore structure.The linear shrinkage of the aerogel was reduced with its linear shrinkage rate of 1.5%.

参考文献/References:

[1] KISTLER S S.Coherent expanded aerogels and jellies[J].Nature,1931,127:741.
[2] PEKALA R W.Organic aerogels from the polycondensation of resorcinol with formaldehyde[J].Journal of materials science,1989,24:3221.
[3] NGUYEN M H,DAO L H.Effects of processing bariable on melamine aerogel formation[J].Journal of non-crystalline solids,1998,225:51.
[4] LORJAI P,CHAISUWAN T,WONGKASEMJIT S.Prous structures of polybenzoxazine-based organic aerogel prepared bu sol-gel process and their carbon aerogels[J].Journal of sol-gel
  science and technology,2009,52:56.
[5] FENG J Z,FENG J,JIANG Y G,et al.Ultralow density carbon aerogels with low thermal conductivity up to 2 000 ℃[J].Materials letters,2011,65:3454.
[6] YANG J,LI S,LUO Y,et al.Compressive properties and fracture behavior of ceramic fiber-reinforced carbon aerogel under quasi-static and dynamic loading[J].Carbon,2011,49:1542.
[7] FENG J Z,ZHANG C R,FENG J.Carbon fiber reinforced carbon aerogel composites for thermal insulation prepared by soft reinforcement[J].Materials letters,2012,67:266.
[8] LIU G,ZHANG L,QU X,et al.A new curing kinetic modle and its application to bpser/ddm epoxy system[J].Journal of thermal analysis and calorimetry,2001,65:837.
[9] SHEN J,WANG J,ZHAI J W,et al.Carbon aerogel films synthesized at ambient conditions[J].Journal of sol-gel science and technology,2004,31:209.
[10] SHEN J,HOU J L,GUO Y Z,et al.Microstructure control of RF and carbon aerogels prepared by sol-gel process[J].Journal of sol-gel science and technology,2005,36:131.
[11] AL-MUHTASEB S,RITTER J.Preparation and properties of resorcinol-formaldehyde organic and carbon gels[J].Advanced materials,2003,15:101.

备注/Memo

备注/Memo:
收稿日期:2015-10-20
基金项目:上海航天科技创新基金重点项目(SAST201469); 国家自然科学基金(U1230113); 上海航天科技创新基金(SAST201272); 浙江省重大专项(2014C11SA600010)
作者简介:吴学玲(1992—),女,山西大同人,硕士,主要研究方向为树脂基气凝胶材料; 张志华(联系人),副教授,E-mail:zzhtj@tongji.edu.cn.
引用本文:吴学玲,张志华,沈军,等.间苯二酚-甲醛树脂基气凝胶微结构的掺杂调控[J].南京工业大学学报(自然科学版),2016,38(2):37-41..
更新日期/Last Update: 2016-03-20