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同时具有高透明、高折光率及高阻燃性环氧树脂设计合成

批准号51703011 学科分类材料的设计与制备 ( E030701 )
项目负责人邵珠宝 负责人职称讲师 依托单位长春工业大学
资助金额25.00
万元
项目类别青年科学基金项目 研究期限2018 年 01 月 01 日 至
2020 年 12 月 31 日
中文主题词无卤阻燃;透明性;折光率;环氧树脂;阻燃固化剂
英文主题词halogen-free flame retardant;transparency; refractive index;Epoxy resin;flame-retardant curing agent

摘要

中文摘要 具有高透明及高折光率的环氧树脂广泛应用于特种粘合剂、LED灯、工艺品和特殊模具模块等领域,但其极易燃烧。环氧树脂的阻燃改性往往伴随着透明性和折光率的显著降低甚至消失,故制备兼具高透明、高折光率与高阻燃性的环氧树脂成为了亟需解决的难题。本项目拟通过缩合脱氨反应将硫脲引入液体脂肪族多胺中,再与二苯基磷酰氯反应,合成兼具无卤阻燃元素与多胺基结构的液态透明无卤反应型阻燃固化剂。利用阻燃固化剂分子中的多胺基结构通过扩链/交联固化环氧树脂。引入的硫元素即可与磷协同阻燃,同时也可显著提高环氧树脂的折光率,并保持环氧树脂的高透明性,从而解决环氧树脂阻燃性改善而透明性和折光率显著下降这一难题。通过探讨该阻燃固化剂的结构与用量对环氧树脂阻燃性能、透明性与折光性能的影响机制,揭示其组成-结构-性能之间的构效关系,为类似多功能反应型阻燃剂的分子设计和制备提供一种新思路。
英文摘要 High refractive index and transparent epoxy resin (EP) is widely used in many fields, such as special adhesive, LED packaging, art ware and molding. However, inflammability is one of the main drawbacks of the EP. Unfortunately, traditional epoxy resin (EP) usually loses its transparency and refractive index once it encounters the requirement of flame retardance. So to enhance the flame retardance and simultaneously improve the refractive index and transparent performance of EP is an important aspect. In this project, the sulfur and phosphorus elements were introduced to aliphatic polyamine through diphenylphosphinic chloride (DPPC) and sulfourea, then a series of transparent flame-retardant curing agents containing polyamine with halogen-free flame retardant elements were designed and prepared. Based on the chemical nature of polyamine structure which can participate in the curing reaction of epoxy through chain-extension or cross-linking reaction, reactive phosphorus- sulfur elements are introduced to the actualize inherent flame EP. Meanwhile, due to the introduction of sulfur, the Flame retardant efficiency of curing EP increased, but also the refractive index could be improved. Reasonable mechanisms of flame retardant, transparency and refractive index will be researched and proposed. The work will provide a novel insight for designing and preparing of the other materials with reactive flame-retardant system.
结题摘要

成果

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