聚甲基丙烯酸甲酯(PMMA)对氰酸酯树脂(BADCy)力学性能和热性能的影响

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (5): 27-32.

聚甲基丙烯酸甲酯(PMMA)对氰酸酯树脂(BADCy)力学性能和热性能的影响

黄凤萍^1*, 李春雪¹, 祝保林², 王君龙^1,2

1.陕西科技大学化学与化工学院,陕西西安 710021;
2.渭南师范学院复合材料研究所,陕西渭南 714000

收稿日期:2014-11-03 出版日期:2015-05-28 发布日期:2021-09-13
作者简介:黄凤萍(1967-),女,博士,副教授,主要从事复合材料研究,huangfp168@163.com。
基金资助:
陕西省自然科学基础研究计划项目(2014JM2035);陕西省政府工业攻关项目(2013K09-31)

INFLUENCE OF POLY (METHYL METHACRYLATE) (PMMA) ON THE CYANATE ESTER RESIN (BADCY) MECHANICAL PROPERTIES AND THERMAL PROPERTIES

HUANG Feng-ping^1*, LI Chun-xue¹, ZHU Bao-lin², WANG Jun-long ^1,2

1. School of Chemistry and Chemical Engineering, Shaanxi University of Science Technology, Xi'an 710021,China;
2. Composite Materials Engineering Center, Weinan Normal University, Weinan 714000, China

Received:2014-11-03 Online:2015-05-28 Published:2021-09-13

摘要/Abstract

摘要： 通过异步合成法,将预聚的聚甲基丙烯酸甲酯(PMMA)用于改性双酚A型氰酸酯树脂(BADCy),制备了改性BADCy。文章通过对材料进行弯曲强度、冲击强度、动态热机械分析(DMA)、SEM、FTIR分析,探讨不同PMMA添加量对改性BADCy力学性能的影响。结果显示,与纯BADCy相比,当PMMA的质量分数为20%时,改性BADCy弯曲强度和冲击强度分别提高58.5%和88%,环氧树脂(EP)与BADCy相分离消失,玻璃化温度(Tg)基本保持不变,同时改性BADCy的粘性较低,有助于固化浇铸成型。通过使用TGA、DSC等测试手段探讨不同PMMA添加量对材料热性能的影响。结果表明,当PMMA质量分数为20%时,改性BADCy的热失重温度、质量保持率基本不变,固化热降低,反应可控性增强。

关键词: 氰酸酯树脂, 聚甲基丙烯酸甲酯, 异步合成, 增韧, 热性能

Abstract: The materials were prepared on polymethyl methacrylate (PMMA) added into the bisphenol A type of cyanate ester resin (BADCy) by asynchronous synthesis method. The paper investigates the effects of weight of PMMA on the mechanical properties of the composites through flexural strength and fracture strength test and dynamic thermal mechanical analysis (DMA) testing,while using scanning electron microscopy (SEM) and Fourier transform infrared spectrometer (FTIR). The results show that PMMA composite material flexural strength and fracture strength were the largest and increased by 58.5% and 88.3%, compared with pure BADCy. When the weight of PMMA is 20%, PMMA and BADCy react during the grafting reaction, eliminating the phase separation of epoxy resin and BADCy. The glass transition temperature (Tg) remains substantially unchanged, while the low viscosity of the composite, cast molding can be helpful. The thermal properties of composite was studied through thermo-gravimetric analysis (TGA), differential scanning calorimetry (DSC). The results show that weight loss temperature and mass retention rate were basically unchanged, while heat curing reduced the controllability of reaction, compared with pure BADCy.

Key words: cyanate ester resin, polymethyl methacrylate, asynchronous synthesis, toughened, thermal stability

中图分类号:

黄凤萍, 李春雪, 祝保林, 王君龙. 聚甲基丙烯酸甲酯(PMMA)对氰酸酯树脂(BADCy)力学性能和热性能的影响[J]. 复合材料科学与工程, 2015, 0(5): 27-32.

HUANG Feng-ping, LI Chun-xue, ZHU Bao-lin, WANG Jun-long. INFLUENCE OF POLY (METHYL METHACRYLATE) (PMMA) ON THE CYANATE ESTER RESIN (BADCY) MECHANICAL PROPERTIES AND THERMAL PROPERTIES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(5): 27-32.

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