|本期目录/Table of Contents|

[1]寇晓飞,王亚超,赵江平.β环糊精改性聚氨酯基涂料的火安全性与热解动力学分析[J].中国安全生产科学技术,2022,18(7):171-177.[doi:10.11731/j.issn.1673-193x.2022.07.025]
 KOU Xiaofei,WANG Yachao,ZHAO Jiangping.Fire safety and pyrolysis kinetics analysis of β-cyclodextrin modified polyurethane based coatings[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(7):171-177.[doi:10.11731/j.issn.1673-193x.2022.07.025]
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β环糊精改性聚氨酯基涂料的火安全性与热解动力学分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年7期
页码:
171-177
栏目:
职业安全卫生管理与技术
出版日期:
2022-07-31

文章信息/Info

Title:
Fire safety and pyrolysis kinetics analysis of β-cyclodextrin modified polyurethane based coatings
文章编号:
1673-193X(2022)-07-0171-07
作者:
寇晓飞王亚超赵江平
(西安建筑科技大学 资源工程学院,陕西 西安 710055)
Author(s):
KOU Xiaofei WANG Yachao ZHAO Jiangping
(College of Resources and Engineering,Xi’an University of Architecture and Technology,Xi’an Shaanxi 710055,China)
关键词:
环糊精偶联剂热释放速率膨胀型防火涂料热解动力学
Keywords:
cyclodextrin coupling agent heat release rate intumescent fire retardant coatings (IFR) pyrolysis kinetics
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2022.07.025
文献标志码:
A
摘要:
为提高膨胀型防火涂料的阻燃性能,以聚氨酯树脂为基料,以聚磷酸铵、尿素为阻燃体系,通过加入不同掺量的钛酸酯偶联剂改性β-环糊精(β-CD),提高阻燃效果。通过红外光谱仪(FT-IR)、锥形量热仪(CONE)、热重分析仪(TG)、差热扫描量热仪(DSC)等,研究改性β-CD的含量对膨胀型防火涂料的火安全性的影响,使用Coats-Redfern积分法计算涂料的热解动力学。研究结果表明:改性β-CD能有效地提高涂料的阻燃性能,当β-CD为1wt%时拥有最佳阻燃性能,1wt%改性β-CD能够提高涂层的蓄热能力,延缓APP的分解和抑制碳质材料的分解,进而提高涂料的阻燃性能。通过热解动力学拟合曲线得出,1wt%的样品能在253 ℃以后显著提高反应的活化能,提高涂层的阻燃性。
Abstract:
In order to improve the flame retardant performance of the intumescent fire retardant coatings (IFR),taking the polyurethane resin as the base material and the ammonium polyphosphate and urea as the flame retardant system,the β-cyclodextrin (β-CD) was modified by adding different dosages of titanate coupling agent to improve the flame retardant effect.The influence of the content of modified β-CD on the fire safety of IFR was studied through the infrared spectrometer (FT-IR),cone calorimeter (CONE),thermal gravimetric analyzer (TG),and differential scan calorimeter (DSC),and the pyrolysis kinetics of coatings was calculated by the Coats-Redfern integral method.The results showed that the modified β-CD could effectively improve the flame retardant performance of the coatings,and when β-Cd was 1wt%,it had the best flame retardant performance.The 1wt% modified β-CD could improve the heat storage capacity of coating,delay the decomposition of APP and inhibit the decomposition of carbonaceous materials,and then improve the flame retardant performance of the coatings.According to the pyrolysis kinetics fitting curves,it was found that 1wt% sample could significantly improve the activation energy of the reaction and the flame retardant performance of the coating after 253 ℃.

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备注/Memo

备注/Memo:
收稿日期: 2021-10-27
作者简介: 寇晓飞,硕士研究生,主要研究方向为建筑安全与防火。
更新日期/Last Update: 2022-08-10