文章摘要
闫亚男.磷氮阻燃剂的合成及其在环氧树脂中的应用[J].精细化工,2019,36(2):
磷氮阻燃剂的合成及其在环氧树脂中的应用
Synthesis of Phosphorus-nitrogen Flame Retardant and Its Application in Epoxy Resin
投稿时间:2018-09-11  修订日期:2018-12-12
DOI:
中文关键词: 环氧树脂  阻燃  PAEPA  力学性能  橡塑助剂
英文关键词: epoxy resin  flame retardant  PAEPA  mechanical properties  rubber and plastics auxiliaries
基金项目:国家国际科技合作与交流专项资助项目(2013DFA51200)
作者单位E-mail
闫亚男 沈阳化工大学 1003510046@qq.com 
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中文摘要:
      摘要:由亚磷酸,乙腈和苯膦酰二氯(PPDC)合成了一种添加型阻燃剂——苯膦酰二氨基双乙基四膦酸(PAEPA)。通过FTIR和ESI-MS对PAEPA的结构进行了表征。将PAEPA混入环氧树脂中制备阻燃环氧树脂,通过TGA,UL-94测试和LOI测试研究了用三乙烯四胺(TETA)固化的环氧树脂的阻燃性和热性能。结果表明,当w(P)=2.6% 时,环氧热固性材料表现出优异的阻燃性并通过UL94实验的V-0等级,LOI为29.8%。从热重曲线看出,800℃的残炭率为17.7%。SEM结果表明:EP/TETA体系中的PAEPA明显促进环氧树脂形成更致密、丰富的密封炭层,以提高燃烧过程中基体的阻燃性能。
英文摘要:
      Abstract:A novel flame-retardant additive, Phenylphosphonium diaminobisethyltetraphosphonic acid (PAEPA), was synthesized from phosphoric acid, acetonitrile and phenylphosphonic dichloride(PPDC). The structure of PAEPA was characterized by FTIR, and ESI-MS. PAEPA was blended into epoxy resin to prepare flame-retardant epoxy resins. The flame-retardant and thermal properties of epoxy resins cured with triethylenetetramine (TETA) were investigated by TGA, the UL-94 test, and LOI test. The results revealed that the epoxy thermosets exhibited excellent flame retardancy and passed the V-0 rating of the UL 94 test with an LOI of 29.8% when the phosphorus content was 2.6 %. From the thermogravimetric curve, the residual carbon at 800°C is 17.7%. SEM results showed that PAEPA in the EP/TETA system obviously accelerated the formation of a stronger, phosphorus-rich, sealing char layer to improve the flame-retardant properties of the matrix during combustion.
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