桓珊,赵国栋,李晓捷,庄旭品
HUAN Shan,ZHAO Guo-dong,LI Xiao-jie,ZHUANG Xu-pin

• 1:天津工业大学纺织科学与工程学院

摘要(Abstract)：

将SiO_2纳米粒子加入到由去质子化方法制备的芳纶纳米纤维分散液中,制备芳纶复合纳米纤维气凝胶。通过一系列表征测试,分析了无机纳米粒子添加的芳纶复合气凝胶的力学性能、热性能和燃烧性能。试验结果表明:制得的复合纳米气凝胶的密度为5.6 mg/cm~3,在80%压缩应变下可承受280 kPa的应力,并且具备低导热系数[27.0 mW/(m·K)],热释放峰值仅为11.12 W/g;芳纶复合纳米纤维气凝胶属于离火自熄灭材料,具有优异的阻燃防火性能。
SiO_2 nanoparticles were added into the aramid nanofibers dispersion prepared by deprotonation method to prepare aramid composite nanofibers aerogel. Through a series of characterization tests, the mechanical properties, thermal properties and combustion properties of aramid composite aerogels added with inorganic nanoparticles were analyzed. The experimental results showed that the density of the prepared composite nanoaerogels were 5.6 m/cm~3. The composite aerogel can withstand 300 kPa stress under 80%compression strain, and has low thermal conductivity[27.0 mW/(m·K)], and the heat release peak of the composite aerogel is only 11.12 W/g. Aramid composite nanofiber aerogel is an off-fire self-extinguishing material with excellent flame retardant and fireproof properties.

关键词(KeyWords)： 芳纶;纳米纤维;复合气凝胶;阻燃
aramid fiber;nanofiber;composite aerogel;flame retardant

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 桓珊,赵国栋,李晓捷,庄旭品
HUAN Shan,ZHAO Guo-dong,LI Xiao-jie,ZHUANG Xu-pin

DOI: 10.16090/j.cnki.hcxw.2021.06.008

参考文献(References)：

• [1]ALAM M,SINGH H,LIMBACHIYA M C.Vacuum insulation panels(VIPs) for building construction industry-A review of the contemporary and future directions[J].Applied Energy,2011,88(11):3592-3602.
• [2]INNERLOHINGER J,WEBER H K,KRAFT G.Aerocellulose:aerogels and aerogel-like materials made from cellulose[J].Macromolecular Symposia,2010,24(1):12-15.
• [3]HRUBESH L W.Aerogel applications[J].Journal of Non Crystalline Solids,1998,225(1):335-342.
• [4]FACCINI M,SHABAFROOZ V,BORJA G,et al.High flux and bendable carbon nanofiber membranes for the filtration of nanoparticles from aqueous solutions[J].Procedia Engineering,2012,44:1788-1789.
• [5]吴海华,任超群,王俊,等.结构型隔热材料研究现状及发展趋势[J].化工新型材料,2020,48(1):6-9.
• [6]樊肖雄,张光磊,徐亮,等.气凝胶的阻燃性能研究进展[J].硅酸盐通报,2020,39(5):1670-1676.
• [7]邱坚.木材/SiO2气凝胶纳米复合材的研究[D].哈尔滨:东北林业大学,2004.
• [8]申屠宝卿,高其标,翁志学.团聚纳米SiO2在苯乙烯乳液聚合过程中的再分散过程及机理[J].高分子学报,2004,1(4):495-499.
• [9]何乐年.PECVD非晶SiOx:H薄膜的Si-O-Si键红外吸收特性研究[J].真空科学与技术学报,2001,21(1):60-63.
• [10]YANG B,WANG L,ZHANG M,et al.Timesaving,high-efficiency approaches to fabricate aramid nanofibers (ANFs)[J].ACS Nano,2019,13(7):7886-7897.
• [11]XIE C J,HE L Y,SHI Y F,et al.From monomers to a lasagna-like aerogel monolith:an assembling strategy for aramid nanofibers[J].ACSNano,2019,16(8):7811-7824.
• [12]王雪琴.弹性二氧化硅基纳米纤维气凝胶的制备及功能化应用研究[D].上海:东华大学,2018.
• [13]周映,高鸿,张梦颖,等.高性能有机纤维耐热性能与结构演变研究[J].合成纤维工业,2019,42(4):6-14.
• [14]李怀宇.芳纶基纳米纤维气凝胶的制备及其碳化工艺的研究[D].哈尔滨:哈尔滨工业大学,2018.