含DOPO的磺胺噻唑类化合物的合成及其对透明环氧树脂阻燃性能的影响  

Synthesis of a DOPO-Containing Sulfathiazole Compound for Improving Flame Retardancy of Transparent Epoxy Resin

作　　者：王璐泽 黄惠玲 罗钟琳 王标兵 Luze Wang;Huiling Huang;Zhonglin Luo;Biaobing Wang(School of Material Science and Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学材料科学与工程学院,江苏常州213164

出　　处：《高分子材料科学与工程》2025年第1期78-90,共13页Polymer Materials Science & Engineering

摘　　要：环氧树脂(EP)因其良好的综合性能广泛应用于化学防腐、电子器件、建筑材料等领域,然而,EP固有的易燃性和脆性限制了其在高性能要求材料领域的应用。文中以糠醛、磺胺噻唑和9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)为原料,合成了一种含DOPO的磺胺噻唑类化合物(FSTD),并采用溶液浇注方法制备了EP/FSTD复合材料。系统研究了FSTD对EP/FSTD复合材料热稳定性、固化行为、阻燃性能、燃烧行为、力学性能和透明性的影响。含4%FSTD的复合材料达到了UL-94 V-0阻燃等级,极限氧指数值为35.2%,其热释放率峰值、总释放热和总烟雾释放量分别降低了35.9%,37.3%和71.5%。FSTD的加入不仅促进了连续致密的炭层形成,而且释放出不可燃性气体及含磷自由基,兼具凝固相和气相阻燃作用。与纯EP相比较,EP/4%FSTD复合材料保持了同等水平的透明性,同时其冲击强度增加了1倍左右。Epoxy resins(EP)are widely used in chemical corrosion protection,electronic devices,and construction materials due to their good comprehensive properties.However,the inherent flammability and brittleness limit its application in the fields requiring high-performance.In this paper,a DOPO-containing sulfathiazole compound(FSTD)was synthesized using furfural,sulfathiazole and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO)as raw materials,and the EP/FSTD composites were prepared by solution method.The effects of FSTD on the thermal stability,curing behavior,flame retardancy,combustion behavior,mechanical properties and transparency of EP/FSTD composites were systematically studied.The composite containing 4%FSTD achieves a UL-94 V-0 rating with a limiting oxygen index value of 35.2%,and the peak heat release rate,total heat release and total smoke release are reduced by 35.9%,37.3%and 71.5%,respectively.The addition of FSTD not only promotes the formation of continuous dense carbon layers,but also releases non-flammable gases and phosphorus-containing free radicals,which have the flame retardant effect of condensed phase and gas phase.Compared to pure EP,EP/4%FSTD composite maintains the same level of transparency while the impact strength is almost doubled.

关 键 词：环氧树脂 阻燃性能 韧性 透明性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]