Synthesis and characterization of flame-retardant rigid polyurethane foams derived from gutter oil biodiesel

被引:23
作者
Bo, Guangxu [1 ]
Xu, Xiaoling [1 ]
Tian, Xiaoke [1 ]
Wu, Jiao [1 ]
He, Xin [1 ]
Xu, Li [1 ]
Yan, Yunjun [1 ]
机构
[1] Huazhong Univ Sci & Technol, Coll Life Sci & Technol, Key Lab Mol Biophys, Minist Educ, Wuhan 430074, Peoples R China
关键词
Gutter oil biodiesel; Flame-retardant rigid polyurethane foams; Biomaterials; Good thermal stability; Fire insulation; Porous materials;
D O I
10.1016/j.eurpolymj.2021.110329
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In this study, gutter oil biodiesel-based polyols (GOBP) and a reactive-type flame retardant named diethyl bis(2-hydroxyethyl)-aminomethylphosphonate (BHAPE) were both synthesized. Subsequently, gutter oil biodiesel-based flame-retardant rigid polyurethane foams (BPUFs) were prepared with GOBP, BHAPE, aluminum hydroxide (an additive-type flame retardant) and polymeric diphenylmethane diisocyanate. The properties of the BPUFs, including density, thermal conductivity, compressive properties, chemical component, morphology, thermal stability, limiting oxygen index, cone calorimetry testing, char residues stability were characterized. Among them, BPUF-AB owning 6.97 wt% of GOBP, 18.59 wt% of BHAPE and 39.77 wt% of aluminum hydroxide obtained a lower density of 0.097 g/cm(3), a lower thermal conduction of 0.048 W/(m * k) and the highest compressive strength of 187 +/- 13 kPa. Fire testing revealed a highest limiting oxygen index value of 30.1% and passed the UL-94 standard test. Cone calorimetry testing revealed that the peak heat release rate and peak smoke production release of BPUF-AB were reduced by 51.08% and 57.10%, respectively. Meanwhile, the total heat release rate and total smoke production were respectively decreased by 36.88% and 40.79%. The results indicate that BPUFs derived from gutter oil biodiesel are prosperously potential biomaterials with good thermal stability for fire insulation porous materials in future architecture applications.
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页数:11
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