Synthesis of Vinyl Phosphorus Resin and Its Flame Retardancy for Epoxy Resins

被引：0
|
作者：
Wu C. [1 ,2 ]
Yi Q. [2 ]
Zhou Y. [1 ,2 ]
Tang A. [1 ,2 ]
机构：
[1] EMT Chengdu New material Technology Co., Ltd., Chengdu
[2] National Insulating Material Engineering Research Center, Sichuan EM Technology Co., Ltd., Mianyang
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2021年 / 37卷 / 01期
关键词：
Copper clad laminate; Dielectric properties; Epoxy resins; Halogen free flame retardance;
D O I：
10.16865/j.cnki.1000-7555.2021.0010
中图分类号：
学科分类号：
摘要：
Vinyl phosphorus resin was synthesized by the reaction between methacryloyl chloride and phosphorus-containing phenolic resin under the catalysis of triethylamine, which is an acid acceptor. Glue solutions of DCPD-phenol epoxy resin, active ester as curing agent and vinyl phosphorus resin as flame retardant were prepared by mixing and then applied onto glass fiber cloth through sizing treatment. Composites of DCPD-phenol epoxy resin/active ester/vinyl phosphorus resin/glass fiber cloth were prepared by vacuum compression. The chemical structure and thermal degradation of vinyl phosphorus resin were characterized by Fourier transform infrared spectroscopy(FT-IR) and thermogravimetric analysis(TGA), respectively. Differential scanning calorimetry (DSC) results illustrate that loading of vinyl phosphorus resin could reduce the glass transition temperature of the composites. The results of TGA suggest that the loading of vinyl phosphorus resin promotes the formation of carbon in condensed phase.The flame retardance were explored by vertical burning test, limit oxygen index (LOI) test and cone calorimeter test. The results show that the composites pass the V-0 rating in UL-94 test and the LOI values reach 29.4%~34.8% when the vinyl phosphorus resin was added. In addition, vinyl phosphorus resin reduces the combustion strength and the fire risk of the composites significantly. The results of dielectric properties test indicate that the addition of vinyl phosphorus resin has little effect on the dielectric constant and dielectric loss of the cured epoxy resins. © 2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：95 / 101
页数：6
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