Scholarlink

<p>Ammonium lignosulfonate-based rigid polyurethane foam (RPUF) was fabricated and co-modified with zinc alginate (ZnAlg) and melamine (MEL). Its thermal stability, flame retardancy, and smoke suppression properties were investigated by thermogravimetric analysis, cone calorimetry, smoke toxicity analysis and scanning electron microscope (SEM) analysis. The findings demonstrated that RPUF-A7.5Z4M1 (7.5&#xa0;g ammonium lignosulfonate, 4&#xa0;g ZnAlg and 1&#xa0;g MEL) exhibited a maximum weight loss rate temperature, integral programmed decomposition temperature (IPDT) and activation energy (E). It suggested a substantial enhancement in the thermal stability of the modified RPUF. Furthermore, the lowest peak heat release rate (PHRR), total heat release (THR), peak smoke production rate (PSPR) and total smoke release (TSR) were observed in RPUF-A7.5Z4M1, indicating its optimal flame retardant property. It also had the lowest smoke density (18.54) and the highest transmittance (72.37%), which demonstrated its effective smoke suppression property. In addition, RPUF-A7.5Z4M1 exhibited the lowest of the toxic gas production index (ToxPI), the smoke production index (TSPI), fire growth index (FGI) and the heat release index (THRI). The current research provides a useful reference for future developments in the field of flame retardant RPUF.</p> Graphical abstract <p></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

Thermal stability, flame retardancy and smoke suppression of ammonium lignosulfonate-based rigid polyurethane foam co-modified with zinc alginate and melamine

  • 期刊论文

  • 发表日期：

    2025年10月13日

查看全文
  • Xu Zhang,
  • Rui Han,
  • Qihong Guan,
  • Dehe Yuan,
  • Zhi Wang,
  • Hua Xie

摘要

Ammonium lignosulfonate-based rigid polyurethane foam (RPUF) was fabricated and co-modified with zinc alginate (ZnAlg) and melamine (MEL). Its thermal stability, flame retardancy, and smoke suppression properties were investigated by thermogravimetric analysis, cone calorimetry, smoke toxicity analysis and scanning electron microscope (SEM) analysis. The findings demonstrated that RPUF-A7.5Z4M1 (7.5 g ammonium lignosulfonate, 4 g ZnAlg and 1 g MEL) exhibited a maximum weight loss rate temperature, integral programmed decomposition temperature (IPDT) and activation energy (E). It suggested a substantial enhancement in the thermal stability of the modified RPUF. Furthermore, the lowest peak heat release rate (PHRR), total heat release (THR), peak smoke production rate (PSPR) and total smoke release (TSR) were observed in RPUF-A7.5Z4M1, indicating its optimal flame retardant property. It also had the lowest smoke density (18.54) and the highest transmittance (72.37%), which demonstrated its effective smoke suppression property. In addition, RPUF-A7.5Z4M1 exhibited the lowest of the toxic gas production index (ToxPI), the smoke production index (TSPI), fire growth index (FGI) and the heat release index (THRI). The current research provides a useful reference for future developments in the field of flame retardant RPUF.

Graphical abstract