Conjugated Microporous Polymer Aerogels Encapsulated within Hydroxyapatite Nanowires Exhibit Good Thermal Insulation and Flame-Retardant Properties

被引：1

作者：

Chen, Yanjun ^{[1
]}

Zhu, Zhaoqi ^{[1
]}

Li, Min ^{[1
]}

Zhang, Jia ^{[1
]}

Cao, Xiaoyin ^{[1
]}

Fu, Ruijuan ^{[1
]}

Xing, Guoyu ^{[1
]}

Sun, Hanxue ^{[1
]}

Li, Jiyan ^{[1
]}

Li, Am ^{[1
]}

机构：

[1] Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China

来源：

LANGMUIR | 2024年

基金：

中国国家自然科学基金;

关键词：

NANOFIBRIL AEROGELS; FIRE-RESISTANT; FLAMMABILITY; TRANSPARENT; PAPER; ACID;

D O I：

10.1021/acs.langmuir.4c00388

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aerogels have been widely studied in the field of thermal insulation. Herein, we reported a kind of conjugated micropolymer (CMP) aerogel synthesized by 1,3,5-triethynylbenzene and 2-amino-3,5-dibromopyridine. To enhance the flame-retardant property, we composited hydroxyapatite (HAP) nanowires with a CMP aerogel. Transmission electron microscopy (TEM) analysis revealed that HAP nanowires were encapsulated within nanosized CMP tubes. In addition, the thermal conductivity of HAP2-NCMP aerogel was 0.0251 W m(-1) K-1, which possesses good thermal insulation property. In the micro-combustion calorimeter (MCC) test, compared with pure NCMP, the peak heat release rate (pHRR) of HAP2-NCMP decreased from 39.3 to 30.82 W g(-1), approximately 21.6% lower. Furthermore, with the increased addition of hydroxyapatite in the HAP-NCMP composite, the pHRR of HAP(3)-NCMP decreased by about 37.4%. Besides, NCMP possesses good mechanical properties, with a compressive strength of 117.3 kPa at a strain level of 60%. These findings suggest promising application potential for HAP-NCMP in energy-saving and flame-retardant applications.

引用

页码：13784 / 13793

页数：10