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薛建英,高艺璇,胡志勇,等. 聚磷酸铵/氢氧化镁复配填充聚氨酯硬泡的阻燃性能[J]. 科学技术与工程, 2020, 20(30): 12507-12511.
xue jian ying,高艺璇,胡志勇,et al.Study on Flame Retardancy of Polyurethane Ammonium/Magnesium Hydroxide Composite Filled Polyurethane Rigid Foam[J].Science Technology and Engineering,2020,20(30):12507-12511.
聚磷酸铵/氢氧化镁复配填充聚氨酯硬泡的阻燃性能
Study on Flame Retardancy of Polyurethane Ammonium/Magnesium Hydroxide Composite Filled Polyurethane Rigid Foam
投稿时间:2019-12-19  修订日期:2020-07-18
DOI:
中文关键词:  硬质聚氨酯泡沫塑料,阻燃,聚磷酸铵,氢氧化镁
英文关键词:rigid polyurethane foam flame retardant ammonium polyphosphate magnesium hydroxide
基金项目:山西省重点研发计划项目(201703D121029-1)和山西省应用基础研究计划项目(201901D111134)
              
作者单位
薛建英 中北大学
高艺璇 中北大学
胡志勇 中北大学化学工程与技术学院
孟繁敏 中北大学
张昇 中北大学
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中文摘要:
      摘要: 为了增强聚氨酯硬泡在燃烧过程中的的阻燃性能和抑烟性能,以聚磷酸铵与氢氧化镁组成协效阻燃剂加入聚氨酯中制备了阻燃聚氨酯硬泡。通过临界氧指数测定仪、水平垂直燃烧测定仪、锥形量热仪和电子万能试验机研究了聚磷酸铵和氢氧化镁不同配比对聚氨酯泡沫塑料的阻燃性能、燃烧行为和压缩强度的影响。并用扫描电镜观察了阻燃材料燃烧后残炭的微观结构。结果表明,加入30份聚磷酸铵和10份氢氧化镁的聚氨酯硬泡的氧指数达27.5%,最大热释放速率为113.5 KW/m2,比纯聚氨酯硬泡的最大热释放速率下降了22.3%,最大烟释放速率下降58.9%。成炭致密,有良好的阻燃效果。证明复合阻燃剂加入能够增强聚氨酯材料的阻燃抑烟性能。
英文摘要:
      In order to enhance the flame retardant performance and smoke suppression performance of the polyurethane rigid foam during the combustion process,a flame retardant polyurethane rigid foam is prepared by compounding a flame retardant with ammonium polyphosphate and magnesium hydroxide. The effects of different ratios of APP and MH on the flame retardancy, combustion behavior and compressive strength of polyurethane rigid foams were investigated by critical oxygen index tester, horizontal vertical burning tester, cone calorimeter and electronic universal testing machine. The scanning electron microscope was used to observe the microstructure of the charcoal after combustion of the flame retardant material.The results show that the addition of 30 parts of APP and 10 parts of MH polyurethane rigid foam has an oxygen index of 27.5% and a maximum heat release rate of 113.5 kW/㎡,which is 22.3% lower than the PHRR of pure polyurethane rigid foam, and the maximum smoke release rate falls by 58.9%. The carbon is dense and has good flame retardant effect.It is proved that adding a composite flame retardant can enhance the flame retardant and smoke suppression properties of polyurethane materials.
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