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Mechanical property improvement and fire hazard reduction of ammonium polyphosphate microencapsulated in rigid polyurethane foam

机译:刚性聚氨酯泡沫中的多磷酸盐微胶囊化的力学性能提高和火灾危害

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摘要

Ammonium polyphosphate (APP) is an effective phosphorus-containing flame retardant. But APP also has excellent hygroscopic capacity and decreases the mechanical property of composite. The aim of the study was to microencapsulate APP with polymethyl methacrylate (PMMA) to prepare microencapsulated ammonium polyphosphate (PMAPP) in order to eliminate the harmful effects caused by the mechanical property of composite. The microcapsules are characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG), and hydroscopicity test and observed by scanning electron microscopy (SEM). Fire hazard of rigid polyurethane foam (RPUF) is evaluated using a cone calorimeter and limited oxygen index test. The mechanical property of RPUF is studied by compressive strength test. The results show that APP has been microencapsulated by PMMA successfully and the shell does not decrease the beneficial effect of APP on fire hazard of RPUF. Furthermore, the shell also reduces the damage of APP on the mechanical property of composite. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48307.
机译:多磷酸铵(APP)是含磷阻燃剂的有效阻燃剂。但App还具有出色的吸湿能力,并降低了复合材料的力学性能。该研究的目的是用聚甲基丙烯酸甲酯(PMMA)微胶囊化,以制备微胶囊化的多磷酸铵(PMAPP),以消除由复合材料的机械性能引起的有害影响。微胶囊的特征在于傅里叶变换红外光谱(FTIR),热重分析(TG)和扫描电子显微镜(SEM)观察。使用锥形量热计评价刚性聚氨酯泡沫(RPUF)的火灾危险,并有限氧指数试验。通过压缩强度试验研究RPUF的力学性能。结果表明,APP已成功通过PMMA微胶囊化,壳体不会降低APP对RPUF火灾危害的有益效果。此外,壳牌还降低了复合材料力学性质的应用损坏。 (c)2019 Wiley期刊,Inc.J.Phill。聚合物。 SCI。 2019,136,48307。

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  • 作者单位

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Environm &

    Safety Engn Qingdao 266042 Shandong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业(高聚物工业);
  • 关键词

    flame retardance; mechanical properties; thermal properties;

    机译:阻燃;机械性能;热性能;

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