纯生物质纤维素气凝胶的制备及其阻燃性能

doi:10.13475/j.fzxb.20210907508

纺织学报 ›› 2022, Vol. 43 ›› Issue (01): 1-8.doi: 10.13475/j.fzxb.20210907508

• 纤维材料 • 下一篇

纯生物质纤维素气凝胶的制备及其阻燃性能

骆晓蕾¹, 刘琳², 姚菊明²^,³()

1.浙江理工大学纺织科学与工程学院(国际丝绸学院), 浙江杭州 310018
2.浙江理工大学材料科学与工程学院, 浙江杭州 310018
3.宁波大学材料科学与化学工程学院, 浙江宁波 315211

收稿日期:2021-09-23 修回日期:2021-11-03 出版日期:2022-01-15 发布日期:2022-01-28
通讯作者: 姚菊明
作者简介:骆晓蕾(1992—),女,博士生。主要研究方向为生物质高分子阻燃材料。
基金资助:
浙江省“万人计划”科技创新领军人才项目(2018R52002);国家自然科学基金委面上项目(51672251);浙江理工大学优秀研究生学位论文培育基金项目(LW-YP2020005)

Preparation and study of pure biomass cellulose aerogels for flame retardancy

LUO Xiaolei¹, LIU Lin², YAO Juming²^,³()

1. College of Textile Science and Engineering(International Institute of Silk), Zhejiang Sci-Tech University,Hangzhou, Zhejiang 310018, China
2. School of Materials Science & Engineering, Zhejiang Sci-Tech University,Hangzhou, Zhejiang 310018, China
3. School of Materials Science and Chemical Engineering, Ningbo University,Ningbo, Zhejiang 315211, China

Received:2021-09-23 Revised:2021-11-03 Published:2022-01-15 Online:2022-01-28
Contact: YAO Juming

摘要/Abstract

摘要：

为有效推进纺织领域资源循环利用、增强绿色低碳循环发展,以废棉纱为原料制备再生纤维素气凝胶,并在水相环境驱动下,将浸提自废弃农林作物的生物质茶多酚沉积于该气凝胶表面,开发纯生物质节能保温用阻燃纤维素气凝胶(BTCA),并分别采用极限氧指数仪、热重分析、热重红外联用仪、拉曼光谱等分析了BTCA的热稳定性、热分解气固相产物及阻燃机制等。结果表明:生物质茶多酚类沉积物具有优异的抗氧化能力,并可促进纤维素分子链的脱水碳化,实现固相阻燃,使得纤维素的热稳定性显著提升,其极限氧指数高达32.7%,且能离火自熄。

关键词: 废棉纺织品, 全生物质阻燃, 纤维素气凝胶, 茶多酚, 阻燃性能

Abstract:

In order to recycle textiles and enhance the green and low-carbon circular development, regenerated cellulose aerogels were prepared from waste cotton yarns, and the biomass tea polyphenol extracted from agricultural and forestry waste was deposited on the aerogel surface under the driving of water environment. The flame retardant cellulose aerogel (BTCA) was developed for pure biomass energy saving and heat preservation. The flame retardancy, thermal stability, thermal decomposition vapor and solid products, and flame retardant mechanism of BTCA were studied and analyzed by limiting oxygen index method, thermogravimetric analysis, thermogravimetric infrared spectroscopy and Raman spectroscopy. Because the biomass tea polyphenol deposits have an excellent antioxidant capacity, it can promote the dehydration and carbonization of cellulose molecular chain at the same time. Based on this, solid-phase flame retardant was achieved, and their thermal stability has been significantly improved. The limit oxygen index was as high as 32.7% and the cellulose aerogel could self-extinguish when leaving the flame.

Key words: waste cotton textiles, total biomass flame retardance, cellulose aerogel, tea polyphenol, flame retardancy

中图分类号:

TS195

骆晓蕾, 刘琳, 姚菊明. 纯生物质纤维素气凝胶的制备及其阻燃性能[J]. 纺织学报, 2022, 43(01): 1-8.

LUO Xiaolei, LIU Lin, YAO Juming. Preparation and study of pure biomass cellulose aerogels for flame retardancy[J]. Journal of Textile Research, 2022, 43(01): 1-8.

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样品	气氛	T_10%/℃	T_75%/℃	V_max1/(%·min^-1)	V_max2/(%·min^-1)	T_Vmax1/℃	T_Vmax2/℃	残余比/%
CA	空气	252.39	402.79	-17.37	-6.81	340.39	457.99	—
CA	氮气	257.28	388.48	-13.49	—	320.24	—	13.07
BTCA-2.5/5	空气	257.19	471.59	-9.93	-10.08	335.49	561.84	—
BTCA-2.5/5	氮气	262.88	—	-10.89	—	332.79	—	28.86

纯生物质纤维素气凝胶的制备及其阻燃性能

Preparation and study of pure biomass cellulose aerogels for flame retardancy

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