脒基脲磷酸盐和硅酸钠对木材的阻燃作用

doi:10.3969/j.issn.1000-1565.2019.03.007

河北大学学报(自然科学版) ›› 2019, Vol. 39 ›› Issue (3): 264-269.DOI: 10.3969/j.issn.1000-1565.2019.03.007

脒基脲磷酸盐和硅酸钠对木材的阻燃作用

赵娟娟¹,刘刚²,高明¹

收稿日期:2018-09-04 出版日期:2019-05-25 发布日期:2019-05-25
通讯作者: 高明(1974—),男,河北昌黎人,华北科技学院教授,博士,主要从事阻燃材料方向的研究.E-mail:gaoming@ncist.edu.cn
作者简介:赵娟娟(1981—),女,河北沙河人,华北科技学院讲师,北京师范大学在读博士研究生,主要从事精细化工研究. E-mail:zhjj@ncist.edu.cn
基金资助:
中央高校基本科研业务费资助项目(ZH1202B);廊坊市科技支撑项目(2017013150);河北省科技计划自筹项目(17211225)

Flame retardant effects of GUP and sodium silicate on wood

ZHAO Juanjuan¹, LIU Gang², GAO Ming¹

1. Department of Environmental Engineering, North China Institute of Science & Technology, Beijing 101601, China; 2. Beijing Institute of Graphic Communication, Infrastructure Office, Beijing 102600, China

Received:2018-09-04 Online:2019-05-25 Published:2019-05-25

摘要/Abstract

摘要： 采用锥形量热仪(CONE)法评价木材经阻燃剂脒基脲磷酸盐(GUP)和硅酸钠(Na₂SiO₃)处理后的阻燃性能,结合热重分析法研究GUP和Na₂SiO₃的阻燃机理.实验结果表明:与未加阻燃剂处理的木材相比,Na₂SiO₃ 二次处理木材和GUP一次处理木材的热释放速率(HRR_peak)、总热释放量(THR)、烟释放速率(SPR)、总烟释放量(TSP)和CO₂生成率(Y_CO₂)显著降低.Na₂SiO₃ 二次处理木材比GUP一次处理木材显示出更好的阻燃性.从阻燃机理分析,GUP能够加速木材热解过程中的脱水和炭化反应,Na₂SiO₃能够增加纤维素降解反应的活化能,从而增加木材的热稳定性.

关键词: 锥形量热仪, 阻燃剂, 热解, 热重分析, 木材

Abstract: Wood was treated by guanyl urea phosphate(GUP)firstly and sodium silicate(Na₂SiO₃)secondly to impart flame retardance. The flame retarding properties of the treated samples were investigated by cone calorimeter and the thermal behaviors of these samples were studied by differential thermogravimetry(DTG)and thermogravimetry(TG)in air. It was found that the combustion parameters including peak of heat release rate(HRR_peak), total heat release(THR), smoke production rate(SPR), total smoke product(TSP)and the yield of CO₂(Y_CO₂)were decreased considerably by the treatment of GUP and Na₂SiO₃ when compared with those of the untreated samples. Furthermore, wood treated by both GUP and Na₂SiO₃ had better flame retarding properties than that by only GUP possibly because GUP could accelerate dehydration and carbonation, and simultaneously Na₂SiO₃ could relatively increase the activation energy of cellulose, which resulted in the enhancement of wood thermal stabilization.

Key words: cone calorimeter, flame retardant, thermolysis, thermogravimetry analysis, wood

中图分类号:

TU545
TS67

赵娟娟,刘刚,高明. 脒基脲磷酸盐和硅酸钠对木材的阻燃作用[J]. 河北大学学报(自然科学版), 2019, 39(3): 264-269.

ZHAO Juanjuan, LIU Gang, GAO Ming. Flame retardant effects of GUP and sodium silicate on wood[J]. Journal of Hebei University (Natural Science Edition), 2019, 39(3): 264-269.

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脒基脲磷酸盐和硅酸钠对木材的阻燃作用

Flame retardant effects of GUP and sodium silicate on wood

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