|本期目录/Table of Contents|

[1]王文召,陈雪飞,杜磊.对位芳纶气凝胶的制备及其孔结构调控[J].浙江理工大学学报,2022,47-48(自科五):635-641.
　WANG Wenzhao,CHEN Xuefei,DU Lei.Preparation of para aramid aerogel and its  pore structure regulation[J].Journal of Zhejiang Sci-Tech University,2022,47-48(自科五):635-641.
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对位芳纶气凝胶的制备及其孔结构调控()
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浙江理工大学学报[ISSN:1673-3851/CN:33-1338/TS]

卷:
第47-48卷
期数:
2022年自科第五期
页码:
635-641
栏目:
出版日期:
2022-09-10

文章信息/Info

Title:
Preparation of para aramid aerogel and its  pore structure regulation
文章编号:
1673-3851 (2022) 09-0635-07
作者:
王文召; 陈雪飞; 杜磊
浙江理工大学, a. 服装学院；b. 纺织科学与工程学院 (国际丝绸学院)；c. 浙江省服装工程技术研究中心，杭州 310018
Author(s):
WANG Wenzhao; CHEN Xuefei; DU Lei
a. School of Fashion Design & Engineering; b. College of Textile Science and Engineering (International Institute of Silk); c. Zhejiang Provincial Research Center of Fashion Engineering  Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
关键词:
对位芳纶; 气凝胶; 冷冻干燥; 叔丁醇; 孔结构
分类号:
TS151
文献标志码:
A
摘要:
针对冷冻干燥条件下气凝胶骨架易坍塌而造成隔热效果差的问题，配制二甲基亚砜（DMSO）与四丁基氟化铵（TBAF）溶液溶解对位芳纶纤维；通过改变叔丁醇/水置换液的体系构成来调控气凝胶的孔结构，制备隔热性能优异的对位芳纶气凝胶，并对该气凝胶的表观形貌、微观结构、热稳定性以及导热系数进行测试表征。结果表明：与纯水为置换液相比，加入叔丁醇可改变冰晶的生长形态，使得气凝胶内部呈现均匀的三维网状孔结构，有效改善了其骨架坍塌的问题。随着置换液中叔丁醇体积分数的增大，气凝胶收缩率先减小后增大，导热系数呈现相同的趋势；当叔丁醇体积分数为50%时，气凝胶收缩率最小，密度为0.021 g/cm3，比表面积高达208.05 m2/g，导热系数为0.028 W/(m·K)，热分解温度达560 ℃。该研究结果可为基于冷冻干燥法的对位芳纶气凝胶孔结构调控提供新思路。

参考文献/References:

［ 1 ］ Qin H F, Zhang Y F, Jiang J G, et al. Multifunctional superelastic cellulose nanofibrils aerogel by dual ice templating assembly ［ J ］ . Advanced Functional Materials, 2021, 31(46): 2106269.

［2］Venkataraman M, Mishra R, Militky J, et al. Aerogel based nanoporous fibrous materials for thermal insulation［J］. Fibers and Polymers, 2014, 15(7): 1444-1449.

［3］Xie C J, He L Y, Shi Y F, et al. From monomers to a lasagnalike aerogel monolith: an assembling strategy for aramid nanofibers［J］. ACS Nano, 2019, 13(7): 7811-7824.

［4］〖JP2〗Yang B, Wang L, Zhang M Y, et al. Fabrication, applications, and prospects of aramid nanofiber［J］. Advanced Functional Materials, 2020, 30(22): 2000186.

［5］Zhenzong S, Satoko O. Preparation of paramid aerogels using supercritical CO 2［J］. 繊維学会誌, 2014, 70(10): 233-239.

［6］Zaman A, Huang F, Jiang M, et al. Preparation, properties, and applications of natural cellulosic aerogels: A review［J］. Energy and Built Environment, 2020, 1(1): 60-76.

［7］Du L, Tabata I, Hirogaki K. A New Nanoporous Aramid Fiber Aerogel［J］. Sen’i Gakkaishi, 2014, 70(9): 197-202.

［8］Omura T, Imagawa K, Suzuki T, et al. Morphology control of porous cellulose particles by tuning the surface tension of media during drying［J］. Langmuir, 2018, 34(50): 1549015494.

［9］Wang Y J, Cui Y, Shao Z Y, et al. Multifunctional polyimide aerogel textile inspired by polar bear hair for thermoregulation in extreme environments［J］. Chemical Engineering Journal, 2020, 390: 124623.

［10］Gupta S, Martoa F, Orgas L, et al. Icetemplated porous nanocellulosebased materials: Current progress and opportunities for materials engineering［J］. Applied Sciences, 2018, 8(12): 2463.

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备注/Memo

备注/Memo:
收稿日期： 2022-02-04
网络出版日期：2022-05-09
基金项目： 浙江理工大学基本科研业务费专项资金项目（2021Q056）
作者简介： 王文召（1993-），男，河南南阳人，硕士研究生，主要从事芳纶气凝胶热防护方面的研究
通信作者： 杜磊，E-mail: dulei@zstu.edu.cn
更新日期/Last Update: 2022-09-07