[1]徐志胜,赵雯筠,颜龙,等.羟基化氮化硼与磷酸二氢铵在致密化木材中的阻燃作用*[J].中国安全生产科学技术,2023,19(6):151-157.[doi:10.11731/j.issn.1673-193x.2023.06.021]
XU Zhisheng,ZHAO Wenjun,YAN Long,et al.Flame-retardant function of hydroxylated boron nitride and ammonium dihydrogen phosphate on densified wood[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(6):151-157.[doi:10.11731/j.issn.1673-193x.2023.06.021]
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羟基化氮化硼与磷酸二氢铵在致密化木材中的阻燃作用*
XU Zhisheng,ZHAO Wenjun,YAN Long,et al.Flame-retardant function of hydroxylated boron nitride and ammonium dihydrogen phosphate on densified wood[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(6):151-157.[doi:10.11731/j.issn.1673-193x.2023.06.021]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 19
- 期数:
- 2023年6期
- 页码:
- 151-157
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2023-06-30
文章信息/Info
- Title:
- Flame-retardant function of hydroxylated boron nitride and ammonium dihydrogen phosphate on densified wood
- 文章编号:
- 1673-193X(2023)-06-0151-07
- Keywords:
- flame-retardant wood; impregnation; compressed densification; flame retardancy; char formation behavior
- 分类号:
- X932
- 文献标志码:
- A
- 摘要:
- 为降低木材火灾危险性，以氮化硼和磷酸二氢铵为阻燃剂，利用阻燃浸渍与致密工艺制备阻燃致密化木材，探究阻燃致密化技术对木材阻燃性能、隔热性能和成炭行为的影响。研究结果表明：经磷酸二氢铵和羟基化氮化硼处理的阻燃致密化木材（HBN-ADW试样）阻燃性能有效提升；与原木相比，HBN-ADW试样极限氧指数增至35.5%，峰值热释放速率、总释放热、受热1 200 s时背温分别降低59.4%，48.4%，40.1%；阻燃致密化技术可赋予木材更高热稳定性，在降低质量损失速率同时提高残炭量；阻燃致密化木材在受热时产生富含CC芳香结构炭层，HBN-ADW试样炭层中还含大量P—O—P、P—O—C和B—O—P交联结构，均能有效增强木材阻燃性、隔热性和热稳定性。研究结果对木材阻燃处理和生产应用具有重要参考意义。
- Abstract:
- To reduce the wood fire hazard,the densified flame-retardant wood was prepared using the flame retardant impregnation and densification processes with boron nitride and ammonium dihydrogen phosphate as flame retardants.The influence of densified flame-retardant technology on the flame retardancy,heat insulation and char formation behavior of wood was investigated.The results show that the flame retardancy of densified flame-retardant wood treated with ammonium dihydrogen phosphate and hydroxylated boron nitride,named HBN-ADW sample,is effectively improved.Compared with natural wood,the limiting oxygen index of HBN-ADW sample increases to 35.5%,the peak heat release rate,total heat release and backside temperature after heating at 1 200 s reduce by 59.4%,48.4% and 40.1%,respectively.The densified flame-retardant technology can enhance the thermal stability and increase the char residue of wood,while reducing the mass loss rate.The densified flame-retardant wood produces char layers rich in CC aromatic structure when heating,while there are plenty of P—O—P,P—O—C and B—O—P cross-linked structures in char layer of HBN-ADW sample,all of which can greatly enhance the flame retardancy,heat insulation and thermal stability of wood.The results have great reference significance for wood flame-retardant treatment and production application.
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备注/Memo
- 备注/Memo:
-
收稿日期： 2022-11-23
* 基金项目： 国家自然科学基金项目(52276143)；湖南省重点研发计划项目（2021SK2054）
作者简介： 徐志胜，博士，教授，主要研究方向为火灾科学与消防工程。
通信作者： 颜龙，博士，副教授，主要研究方向为防火阻燃材料。
