甲基取代二芳基氧化膦阻燃改性环氧树脂的研究

doi:10.11896/cldb.23040213

材料导报

2024, Vol. 38

Issue (16): 23040213-10 https://doi.org/10.11896/cldb.23040213

高分子与聚合物基复合材料

甲基取代二芳基氧化膦阻燃改性环氧树脂的研究

吴妹, 徐晓磊, 李晓, 刘玖红, 于光睿, 段好东, 韩玉玺, 于青, 王忠卫^*

山东科技大学材料科学与工程学院,山东青岛 266590

Study on Methyl Substitued Diarylphosphine Oxide Flame Retardant Modified Epoxy Resin

WU Mei, XU Xiaolei, LI Xiao, LIU Jiuhong, YU Guangrui, DUAN Haodong, HAN Yuxi, YU Qing, WANG Zhongwei^*

College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China

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摘要通过苯基二氯化膦(DCPP)分别与甲苯和间二甲苯反应,制备了(4-甲苯基)苯基氧化磷(4-MPO)和(2,4-二甲苯基)苯基氧化磷(2,4-DMPO)两种新化合物。以目标化合物为反应型阻燃剂合成了双酚A型含磷环氧,并进一步制备了4,4′-二氨基二苯砜固化的阻燃环氧树脂。分别测试阻燃环氧树脂的热稳定性、阻燃性、吸水性、介电性能,并研究了阻燃机理。结果表明:两种阻燃剂均能提高环氧树脂的阻燃性,其中2,4-DMPO阻燃EP的效率更高。4-MPO改性环氧树脂的磷含量为0.9%(质量分数,下同)时,其极限氧指数(LOI)达到31.5%并通过UL-94 V-0等级,2,4-DMPO改性环氧树脂的磷含量为0.6%时,其极限氧指数(LOI)达到30.3%并通过UL-94 V-0等级。与未改性环氧树脂相比,4-MPO和2,4-DMPO改性环氧树脂的热稳定性、T_g和吸水性都有所下降,但介电性能明显提高,2,4-DMPO改性环氧树脂表现出更高的阻燃性和更好的介电性能。阻燃机理研究表明,两个阻燃剂均通过气相和固相阻燃机理发挥作用,并以气相机理为主。以上结果表明,两种化合物均可作为环氧树脂的良好阻燃剂。

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	吴妹
	徐晓磊
	李晓
	刘玖红
	于光睿
	段好东
	韩玉玺
	于青
	王忠卫

关键词: 环氧树脂阻燃剂二苯基氧化膦介电性能阻燃性能

Abstract: Two new compounds, (4-methylphenyl) phenylphosphine oxide (4-MPO) and (2, 4-dimethylphenyl) phenylphosphine oxide (2, 4-DMPO) were synthesized by the reaction of phenylphosphorus dichloride (DCPP) with toluene and meta-xylene, respectively. The target compounds were introduced as reactive flame retardants into bisphenol A epoxy resin to prepare phosphorus-containing epoxy and flame retardant epoxy resin cured by 4, 4′-diaminodiphenylsulfone was further prepared. Thermal stability, flame retardancy, water absorptivity and dielectric property of the flame retardant epoxy resin were tested, and the flame retardant mechanism was studied. It was found that the two flame retardants can effectively improve the flame retardancy of epoxy resin, the 2, 4-DMPO exhibits higher flame retardant efficiency. The resulting flame retar-dant EP achieved a LOI of 31.5% and a UL-94 V-0 rating when the 4-MPO modified epoxy resin phosphorus content was 0.9% (mass fraction, the same below), while the flame retardant EP demonstrated a LOI of 30.3% and received a UL-94 V-0 rating when the phosphorus content of the 2, 4-DMPO modified epoxy resin was 0.6%. Compared with unmodified epoxy, the thermal stability, T_g and water absorptivity were slightly decreased, but the dielectric property was significantly improved.2, 4-DMPO modified epoxy resin showed higher flame retardancy and better dielectric property. The two flame retardants both act through gas phase and solid phase flame retardant mechanism, and the gas phase mechanism plays an important role.

Key words: epoxy resin flame retardant diphenylphosphine oxide dielectric property flame retardant property

出版日期: 2024-08-25 发布日期: 2024-09-10

ZTFLH:

TQ314.24

基金资助: 山东省自然科学基金(ZR2020LFG002;ZR2020QB023)

通讯作者: *王忠卫,山东科技大学材料科学与工程学院教授,2001年7月于山东省青岛科技大学获得硕士学位,2004年8月于北京市北京理工大学获得博士学位。2004年8月至今于山东科技大学材料科学与工程学院任教,主要从事功能高分子材料改性、有机磷阻燃剂、光引发剂研究等开发及应用工作。以第一作者或通信作者发表SCI论文20余篇;以第一发明人授权国家发明专利6件。wangzhongwei@sdust.edu.cn

作者简介: 吴妹,2021年6月于山东省德州学院获得工学学士学位,2024年6月于山东科技大学材料科学与工程学院获得工程硕士学位。曾在王忠卫教授的指导下进行低卤阻燃液态环氧树脂的合成与应用研究。

引用本文:

吴妹, 徐晓磊, 李晓, 刘玖红, 于光睿, 段好东, 韩玉玺, 于青, 王忠卫. 甲基取代二芳基氧化膦阻燃改性环氧树脂的研究[J]. 材料导报, 2024, 38(16): 23040213-10.
WU Mei, XU Xiaolei, LI Xiao, LIU Jiuhong, YU Guangrui, DUAN Haodong, HAN Yuxi, YU Qing, WANG Zhongwei. Study on Methyl Substitued Diarylphosphine Oxide Flame Retardant Modified Epoxy Resin. Materials Reports, 2024, 38(16): 23040213-10.

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https://www.mater-rep.com/CN/10.11896/cldb.23040213 或 https://www.mater-rep.com/CN/Y2024/V38/I16/23040213

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