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[1]马佳,沈晓冬,崔升,等.低温保冷用SiO2气凝胶复合材料的制备和性能[J].南京工业大学学报(自然科学版),2016,38(02):47-50.[doi:10.3969/j.issn.1671-7627.2016.02.009]
 MA Jia,SHEN Xiaodong,CUI Sheng,et al.Preparation and properties of silica aerogel composites for cold insulation[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(02):47-50.[doi:10.3969/j.issn.1671-7627.2016.02.009]
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低温保冷用SiO2气凝胶复合材料的制备和性能()
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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:
47-50
栏目:
出版日期:
2016-04-10

文章信息/Info

Title:
Preparation and properties of silica aerogel composites for cold insulation
文章编号:
1671-7627(2016)02-0047-04
作者:
马佳1沈晓冬1崔升1滕凯明12周小芳2
1.南京工业大学 材料科学与工程学院 材料化学工程国家重点实验室,江苏 南京 210009; 2.南京天印新材料科技有限公司,江苏 南京 211806
Author(s):
MA Jia1SHEN Xiaodong1CUI Sheng1TENG Kaiming12ZHOU Xiaofang2
1.State Key Laboratory of Materials-Oriented Chemical Engineering,College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China; 2 Nanjing Tianyin New Materials Technology Co. Ltd.,Nanjing 211806,China
关键词:
玄武岩纤维 SiO2气凝胶 疏水 热导率
Keywords:
basalt fiber silica aerogel hydrophobic thermal conductivity
分类号:
O611.62
DOI:
10.3969/j.issn.1671-7627.2016.02.009
文献标志码:
A
摘要:
以玄武岩纤维为增强相,与SiO2溶胶复合,经超临界干燥制备疏水SiO2气凝胶复合材料。采用N2吸附法、接触角分析仪、傅里叶红外光谱仪、激光法导热仪、万能试验机对玄武岩纤维增强SiO2气凝胶复合材料的结构和性能进行表征。结果表明:玄武岩纤维增强SiO2气凝胶复合材料的比表面积为398.31 m2/g、孔体积为1.076 9 cm3/g、接触角为152°、吸水率为1.7%,材料具有良好的隔热性能和耐低温性能,其常温热导率为0.032 W/(m·K),在深冷条件下体积没有发生明显的收缩。玄武岩纤维的加入提供了力学支撑,使材料具有良好的力学性能,其抗压强度为0.37 MPa(10%应变)、0.85 MPa(25%应变)和1.65 MPa(50%应变)。
Abstract:
Hydrophobic silica aerogel composites were prepared by using basalt fibers as reinforcement via supercritical drying process.Its structure and properties were characterized by pore size distribution,contact angle analyzer,Fourier transform infrared spectroscopy,laser flash apparatus, and universal testing machine.Results showed that the specific surface area,the pore volume,contact angel, and the bibulous rate were 398.31 m2/g,1.076 9 cm3/g,152°,and 1.7%,respectively.SiO2 aerogel composites showed excellent thermal insulation properties and low temperature resistance.The thermal conductivity was 0.032 W/(m·K).Volume did not shrink obviously under cryogenic conditions.With the reinforcement of fibers,the materials had good mechanical property.The compressive strengths were 0.37 MPa(10%strain),0.85 MPa(25%strain)and 1.65 MPa(50%strain).

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-11-11
基金项目:长江学者和创新团队发展计划(IRT15R35); 江苏高校优势学科建设工程; 江苏先进无机功能复合材料协同创新中心; 江苏省科技支撑计划(工业)(BE2014128); 宿迁市科技基础设施项目(2013-39); 江苏省社会发展计划(面上)(BE2015672); 江苏省产学研前瞻性联合研究项目(BY201505-01); 江苏省高校自然科学研究重大项目(15KJA430005)
作者简介:马佳(1990—),男,江苏南通人,硕士,主要研究方向为无机功能复合材料; 沈晓冬(联系人),教授,E-mail: xdshen@njtech.edu.cn; 崔升(联系人),教授,E-mail:scui@njtech.edu.cn.
引用本文:马佳,沈晓冬,崔升,等.低温保冷用SiO2气凝胶复合材料的制备和性能[J].南京工业大学学报(自然科学版),2016,38(2):47-50..
更新日期/Last Update: 2016-03-20