材料科学
阻燃剂
极限氧指数
复合材料
聚氨酯
热稳定性
抗压强度
聚磷酸铵
防火性能
锥形量热计
磷酸二铵
复合数
可燃性
抗弯强度
热导率
耐火性
热解
废物管理
化学工程
烧焦
钾
工程类
冶金
作者
Tuan An Nguyen,Dang Khoa Vo,Khoa D. Nguyen,Dang Bao Nhi Tran,Dang Mao Nguyen,Ngoc Thuy Nguyen,Tien Trung Vu,Vy H. Nguyen,DongQuy Hoang
出处
期刊:ACS omega
[American Chemical Society]
日期:2024-04-17
卷期号:9 (17): 19182-19192
被引量:1
标识
DOI:10.1021/acsomega.3c10330
摘要
Lightweight biobased insulation polyurethane (BPU) composite foams with high fire-resistance efficiency are interested in building effective energy and low environmental impact today. This study focuses on manufacturing lightweight BPU from liquefied bamboo polyols and biomass resources, including rice husk and wood flour. Then, they are combined with three flame retardant (FR) additives, such as aluminum diethyl phosphinate, aluminum trihydroxide, and diammonium phosphate, to improve their fire resistance performance. The physicochemical properties, microstructure, thermal stability, mechanical properties, and flame-retardant properties of the BPU composites are characterized to optimize their compromise properties. The results showed that composites with optimized FRs achieved UL94 V-0 and those with nonoptimized FRs reached UL94 HB. The limiting oxygen index exhibited that the fire resistance of BPU composites could increase up to 21-37% within FR additives. In addition, the thermal stability of BPU composites was significantly improved in a temperature range of 300-700 °C and the compressive strength of the BPU composites was also enhanced with the presence of FRs. The scanning electron microscopy observation showed an influence of FRs on the morphology and cell size of the BPU composites. The bio-PU-derived samples in this study showed significantly low thermal conductivity values, demonstrating their remarkable thermal insulation effectiveness.
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