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首页> 外文期刊>Journal of Applied Polymer Science >A (4-fluorophenyl)(phenyl)phosphine oxide-modified epoxy resin with improved flame-retardancy, hydrophobicity, and dielectric properties
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A (4-fluorophenyl)(phenyl)phosphine oxide-modified epoxy resin with improved flame-retardancy, hydrophobicity, and dielectric properties

机译：一种（4-氟苯基）（苯基）膦氧化膦改性的环氧树脂，具有改善的阻燃性，疏水性和介电性能

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摘要

The compound (4-fluorophenyl)(phenyl) phosphine oxide (4-FPO) was designed, synthesized, and used in the modification of epoxy resin (EP). The 4-FPO-modified EP was prepared by curing the reaction mixture of diglycidyl ether of bisphenol A (DGEBA) and 4-FPO in the presence of 4,4 '-diaminodiphenylsulfone (DDS). Compared with the unmodified EP, the limiting oxygen index value of the EP/4-FPO-0.6 (4-FPO-modified EP with 0.6 wt% of phosphorus) increased to 31.6%, and the sample achieved UL-94 V-0 rating. The peak of the heat release rate, average of the heat release rate, and total heat release of EP/4-FPO-0.6 were reduced by 39, 24, and 19%, respectively. Mechanism study showed that the quenching effect in the gas and barrier effect in the condensed phase were responsible for the enhanced flame-retardant properties of the 4-FPO-modified EP. The results showed that hydrophobicity and dielectric properties of the modified EP were clearly improved.
机译：设计、合成了化合物（4-氟苯基）（苯基）氧化膦（4-FPO），并将其用于环氧树脂（EP）的改性。通过在4,4'-二氨基二苯砜（DDS）存在下固化双酚A二缩水甘油醚（DGEBA）和4-FPO的反应混合物，制备了4-FPO改性EP。与未改性EP相比，EP/4-FPO-0.6（磷含量为0.6 wt%的4-FPO改性EP）的极限氧指数增加至31.6%，样品达到UL-94 V-0评级。EP/4-FPO-0.6的热释放速率峰值、平均热释放速率和总热释放分别降低了39%、24%和19%。机理研究表明，4-FPO改性EP的阻燃性能增强主要是由于气体中的猝灭效应和凝聚相中的阻隔效应。结果表明，改性EP的疏水性和介电性能得到明显改善。

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