无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2022, Vol. 54 ›› Issue (8): 54-58.doi: 10.19964/j.issn.1006-4990.2021-0737

• 研究与开发 • 上一篇    下一篇

“一锅法”合成双组分镁基阻燃剂及性能研究

庞洪昌(),王智煜,田朋,宁桂玲   

  1. 大连理工大学化工学院,精细化工重点实验室,辽宁 大连 116000
  • 收稿日期:2021-12-06 出版日期:2022-08-10 发布日期:2022-08-11
  • 作者简介:庞洪昌(1981— ),男,博士,副教授,主要研究方向为镁化工及阻燃材料;E-mail:hpang@dlut.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(U1808210);中央高校基本科研业务费(DUT19JC57)

Study on synthesis and properties of two component magnesium based flame retardant by“one?pot method”

PANG Hongchang(),WANG Zhiyu,TIAN Peng,NING Guiling   

  1. School of Chemical Engineering,State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116000,China
  • Received:2021-12-06 Published:2022-08-10 Online:2022-08-11

摘要:

基于轻烧氧化镁为原料,通过“一锅法”合成了一种具有氢氧化镁(MH)和碱式碳酸镁(MC)双组分多级结构的一体化高效无卤复合阻燃剂(MCMH)。将MCMH和MH分别与聚丙烯(PP)密炼共混,经模压成型制备了PP/MCMH和PP/MH复合材料,并对比研究了MCMH与MH应用于PP的阻燃性能。结果表明,合成的MCMH是氧化镁先水化转变为氢氧化镁,然后部分氢氧化镁与碳酸氢铵反应生成碱式碳酸镁,呈现花状多级结构。当阻燃剂质量分数占复合材料的50%时,PP/MCMH复合材料的热释放速率(HRR)峰值和烟雾产生率(SPR)峰值较PP/MH复合材料大幅降低,分别为299 kW/m2和0.038 m2/s。该方法原料来源广泛,工艺简单易行,具有规模化生产和应用的潜力。

关键词: 一锅法, 氢氧化镁, 碱式碳酸镁, 阻燃剂, 聚丙烯

Abstract:

Based on light burned magnesium oxide as the raw material,an integral high efficiency halogen?free flame retardant(MCMH) with hierarchical structure and double?components including magnesium hydroxide(MH) and basic magnesium carbonate(MC) was synthesizedvia one?pot method.PP/MCMH and PP/MH composites were prepared by internal mixing of MCMH and MH with polypropylene(PP) respectively,and the flame retardant properties of MCMH and MH applied to PP were compared.The results showed that the synthesized MCMH was formed by the hydration of magnesium oxide to magnesium hydroxide,and then part of magnesium hydroxide reacted with ammonium bicarbonate to form basic magnesium carbonate,showing a flower like multistage structure.When the mass fraction of flame retardant was 50%,the peak heat release rate(HRR) and smoke production rate(SPR) of PP/MCMH composites were significantly decreased to 299 kW/m2 and 0.038 m2/s,respectively.This strategy had the potential for large?scale production and application due to the wide sources of raw materials,short process and easy operation.

Key words: one?pot method, magnesium hydroxide, basic magnesium carbonate, flame retardant, polypropylene

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