Preparation and Properties of Flame Retardant Polyurea Elastomer

被引：0
|
作者：
Dong Y. [1 ]
Ai L. [1 ]
Liu J. [1 ]
Liu P. [1 ]
机构：
[1] State Key Laboratory of Luminescent Materials and Devices, Research Institute of Materials Science, South China University of Technology, Guangzhou
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2023年 / 39卷 / 03期
关键词：
magnesium hydroxide; organic phosphorus–nitrogen flame retardant; organically modified montmorillonite; polyurea; synergistic flame retardancy;
D O I：
10.16865/j.cnki.1000-7555.2023.0066
中图分类号：
学科分类号：
摘要：
In order to improve the flame retardancy of polyurea (PUA), the flame retardant PUA elastomer (PUA/ DOPO-N) was prepared by adding organic phosphorus–nitrogen flame retardant 6, 6- (((sulfonylbis(4, 1-phenylene)) bis (azanediyl))bis(thiophen-2-ylmethylene))bis (6H-di- benzo[c, e][1, 2]oxaphosphinine 6-oxide) (DOPO-N). In addition, using organically modified montmorillonite (OMMT) and magnesium hydroxide (MH) respectively, the flame retardant PUA elastomers (PUA/DOPO- N/OMMT and PUA/DOPO- N/MH) were also prepared. The thermal property, flame retardant property, flame retardant mechanism and mechanical property of PUA/DOPO-N, PUA/DOPO-N/OMMT and PUA/DOPO-N/MH were investigated by thermogravimetric analysis (TG), limiting oxygen index (LOI), UL 94, cone calorimetry, scanning electron microscope (SEM) and tensile test. The results show that the LOI of PUA/20%DOPO-N is 27.0%, and UL 94 V-0 rating is attained. Compared with PUA, the peak heat release rate (pk-HRR), total heat release (THR) and average effective heat combustion (av-EHC) of PUA/20%DOPO-N decrease significantly. In addition, the LOI of PUA/18%DOPO-N/2%OMMT and PUA/15%DOPO-N/5%MH reaches 27.8% and 28.2%, respectively. And their pk-HRR, THR and av-EHC are lower. SEM results show that the carbon layers formed by PUA/18%DOPO-N/2% OMMT and PUA/15% DOPO- N/5% MH after combustion are more complete and compact. Complex of DOPO- N/ OMMT and DOPO-N/MH has synergistic flame retardancy. Moreover, adding DOPO-N and complex, the mechanical properties of PUA are improved. © 2023 Chengdu University of Science and Technology. All rights reserved.
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页码：48 / 56
页数：8
相关论文
共 15 条
  • [1] Huang W B, Yang Y R, Wang B Z, Et al., Spray polyurea elastomer material, Materials Reports, 12, pp. 33-35, (2000)
  • [2] Zhang W C, Ma W S., Preparation and properties of silane end-capped polyurea, Polymer Materials Science & Engineering, 33, 11, pp. 34-39, (2017)
  • [3] Roland C M, Twigg J N, Vu Y, Et al., High strain rate mechanical behavior of polyurea, Polymer, 48, pp. 574-578, (2007)
  • [4] Qian X D., Functionalized graphene with DOPO based organic/ inorganic flame retardants: preparation and its reinforcements on the flame retardancy of polyurea composites, Polymer Composites, 39, pp. 4637-4645, (2018)
  • [5] Wu W W, Cui H L, Diao Z F, Et al., Preparation and characterization of flame retardant spray polyurea coating, Surface Technology, 45, 6, pp. 22-27, (2016)
  • [6] Xing Y L, Guo L, Zhao Q Q, Et al., Synthesis of reactive flame retardant and its application in polyurethane flame retardant, Polymer Materials Science & Engineering, 33, 8, pp. 38-44, (2017)
  • [7] Lu S, Feng Y, Zhang P, Et al., Preparation of flame- retardant polyurethane and its applications in the leather Industry, Polymers, 13, (2021)
  • [8] Mariappan T, Wilkie C A., Cone calorimetric analysis of flame-retarded polyurea for coating applications, Journal of Fire Sciences, 31, pp. 330-338, (2013)
  • [9] Mariappan T, Zhou Y, Hao J W, Et al., Influence of oxidation state of phosphorus on the thermal and flammability of polyurea and epoxy resin, European Polymer Journal, 49, pp. 3171-3180, (2013)
  • [10] Dukarski W, Krzyzanowski P, Gonsior M, Et al., Flame retardancy properties and physicochemical characteristics of polyurea-based coatings containing flame retardants based on aluminum hydroxide, resorcinol bis(diphenyl phosphate), and tris chloropropyl phosphate, Materials, 14, (2021)
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