文章摘要
Effect of Modified Pentaerythritol Phosphate/Piperazine Pyrophosphate Synergistic Flame Retardant System on Flame Resistance of NR Compounds
Received:April 26, 2024  Revised:May 14, 2024
DOI：10.12136/j.issn.1000-890X.2026.03.0171
Key Words: NR；BPA；PAPP；flame retardant modification；flame resistance
Author NameAffiliationE-mail
CAI Yu Kunming University of Science and Technology；Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials；The International Joint Laboratory for Sustainable Polymers of Yunnan Province 2577633573@qq.com 
XIE Yuhui* Kunming University of Science and Technology；Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials；The International Joint Laboratory for Sustainable Polymers of Yunnan Province yuhuixie@kust.edu.cn 
XIE Delong Kunming University of Science and Technology；Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials；The International Joint Laboratory for Sustainable Polymers of Yunnan Province  
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Abstract:
      Using diphenylphosphinic chloride（DPPC） as a modifier，pentaerythritol phosphate（PEPA） was modified to prepare flame retardant modified PEPA（BPA）.A phosphorus-nitrogen synergistic flame retardant system was constructed based on BPA and piperazine pyrophosphate（PAPP），and the effect of the synergistic flame retardant system on the flame resistance of natural rubber（NR） compound was studied.The results showed that the combination of BPA and PAPP could form condensed phase-gas phase synergistic flame retardant effect，effectively improving the thermal stability and flame resistance of flame retardant modified NR compound，significantly reducing the heat release rate and total heat release.The dosage ratio of BPA and PAPP was crucial for the synergistic flame retardant effect，when the dosage of BPA and PAPP was both 15 phr，the flame resistance of the flame retardant modified NR compound was optimal.
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