Scholarlink

<p>In recent years, the development of intumescent fire-retardant coatings (IFRCs) has emerged as a critical strategy for enhancing fire safety in steel structures. However, traditional IFRCs exhibit limitations in meeting the demands of environmental protection, high-efficient fire resistance, and smoke suppression in construction applications. In this study, an organic-inorganic hybrid nanoflame retardant (HP@ZIF) was designed and synergistically applied with ammonium polyphosphate/triazine charring agent (APP/CFA) into an epoxy resin (EP) matrix, fabricating a high-performance IFRC. Back-surface temperature testing results suggested that HP@ZIF enhanced the thermal insulation of IFRC, which was also reflected in a significant increase in the char expansion ratio. The 20-min backside temperatures of the steel plate decreased from 576°C (uncoated steel) to 187°C (S3 coating), with the heat insulation efficiency of 67.5%, showing excellent fire retardant and thermal insulation performance of this EP coating. Additionally, total heat release (THR), total smoke release (TSR), and fire growth rate (FIGRA) of IFRC in the cone calorimeter test (CCT) were reduced by 70.1%, 72.0%, and 90.2%, respectively, demonstrating superior flame retardant and smoke suppression properties. Scanning electron microscopy (SEM) and Raman spectroscopy revealed that a dense, continuous char layer was formed after combustion, with enhanced mechanical integrity and thermal barrier functionality. More importantly, this EP coating maintained superior fire resistance after 7&#xa0;d of water immersion. This study provides an economical and efficient solution for enhancing fire protection in modern buildings.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Hierarchical hybrid nano-structured flame retardant HP@ZIF for improving fire resistance and smoke suppression of intumescent fire-retardant coatings

  • 期刊论文

  • 发表日期：

    2026年6月3日

查看全文
  • Qiuru Bao,
  • Wen-Cong Xu,
  • Yuyu Tian,
  • Kai Zhang,
  • Juying Wu

摘要

In recent years, the development of intumescent fire-retardant coatings (IFRCs) has emerged as a critical strategy for enhancing fire safety in steel structures. However, traditional IFRCs exhibit limitations in meeting the demands of environmental protection, high-efficient fire resistance, and smoke suppression in construction applications. In this study, an organic-inorganic hybrid nanoflame retardant (HP@ZIF) was designed and synergistically applied with ammonium polyphosphate/triazine charring agent (APP/CFA) into an epoxy resin (EP) matrix, fabricating a high-performance IFRC. Back-surface temperature testing results suggested that HP@ZIF enhanced the thermal insulation of IFRC, which was also reflected in a significant increase in the char expansion ratio. The 20-min backside temperatures of the steel plate decreased from 576°C (uncoated steel) to 187°C (S3 coating), with the heat insulation efficiency of 67.5%, showing excellent fire retardant and thermal insulation performance of this EP coating. Additionally, total heat release (THR), total smoke release (TSR), and fire growth rate (FIGRA) of IFRC in the cone calorimeter test (CCT) were reduced by 70.1%, 72.0%, and 90.2%, respectively, demonstrating superior flame retardant and smoke suppression properties. Scanning electron microscopy (SEM) and Raman spectroscopy revealed that a dense, continuous char layer was formed after combustion, with enhanced mechanical integrity and thermal barrier functionality. More importantly, this EP coating maintained superior fire resistance after 7 d of water immersion. This study provides an economical and efficient solution for enhancing fire protection in modern buildings.