文章摘要
含磷木质素基成炭剂的合成及在阻燃聚丙烯中的应用
Synthesis of Lignin-Based Charring Agent Containing Phosphorus and Its Application in Flame Retardant Polypropylene
  
DOI:10.16865/j.cnki.1000-7555.2018.04.002
中文关键词: 木质素  二苯氧基磷酰氯  成炭剂  聚丙烯  阻燃
英文关键词: lignin  diphenyl chlorophosphate  charring agent  polypropylene  flame retardancy
基金项目:国家自然科学基金面上项目(51473024) ;江苏省高校自然科学研究面上项目(16KJD430001)
作者单位
王 楠1, 宋 艳1, 李锦春1, 单雪影2, 杨 荣1, 吴建明3 1. 常州大学 材料科学与工程学院江苏 常州 213164 2. 常州大学 环境与安全工程学院江苏 常州 2131643. 常熟三恒建材有限责任公司江苏 常熟 226500 
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中文摘要:
      以二苯氧基磷酰氯、木质素为原料,一步法合成含磷木质素基成炭剂(Lig-P),利用双辊密炼机制备了系列含Lig-P、聚磷酸铵、季戊四醇的膨胀阻燃聚丙烯(Lig-P-IFR/PP)。利用傅里叶变换红外光谱、光电子能谱、热失重分别对Lig-P的结构与热分解性能进行表征,结果表明,Lig-P在空气中的初始分解温度从214 ℃提高至226 ℃,且在500 ℃时残留量由2%增至35%,呈现出良好的热稳定性和成炭能力。锥形量热测试结果表明,Lig-P-IFR/PP的热释放速率峰值与总释热量均大幅降低;残炭的数码照片、扫描电镜及拉曼光谱分析表明,Lig-P-IFR/PP的炭层更为完整,石墨化程度也更高。此外,Lig-P-IFR/PP的LOI和UL-94分别达到31%和V-0级,拉伸强度也明显提高,达到22.5 MPa。
英文摘要:
      Using diphenyl chlorophosphate and lignin as raw material, lignin-based charring agent with phosphorus (Lig-P) was synthesized by one-step method, and a series of intumescent flame retardant polypropylene with Lig-P, ammonium polyphosphate and pentaerythritol were prepared by double roller mixer. FT-IR, XPS and TGA were used to characterize the structure and thermal degradation property of Lig-P, and the analysis results suggest that the initial degradation temperature of Lig-P rises from 214 ℃ to 226 ℃, and its residue at 500 ℃ increases from 2% to 35% in air atmosphere, showing that Lig-P has good thermal stability and charring ability. Cone calorimeter test results confirm the significant decrease of peak heat release rate and total heat release of Lig-P-IFR/PP. Furthermore, the analysis results of residual char after cone calorimeter test by digital photograph, SEM and LRS reveal that Lig-P-IFR/PP forms continuous char layer with higher graphitization degree. Moreover, the LOI of Lig-P-IFR/PP reaches 31% as well as its passing UL-94 V-0 rating, and its tensile strength is significantly higher than that of Lig-IFR/PP, and reaches 22.5 MPa.
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