苯并噁嗪增韧改性双马来酰亚胺树脂的制备与研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (12): 21-27.

苯并噁嗪增韧改性双马来酰亚胺树脂的制备与研究

周如金, 王翔^*, 王钧, 蔡浩鹏

武汉理工大学材料科学与工程学院/先进材料制造装备与技术研究院,武汉430070

收稿日期:2018-03-23 出版日期:2018-12-28 发布日期:2018-12-28
通讯作者: 王翔(1972-),男,博士,副教授,主要研究方向为聚合物基复合材料结构功能一体化复合材料,sightsee@126.com。
作者简介:周如金(1991-),男,硕士研究生,主要研究方向为树脂基复合材料的研制。
基金资助:
国家技术基础资助JCKYofscientificresearchfoundation(GrantNo.JCKY2016110C008)

PREPARATION AND STUDY OF TOUGHENED BISMALEIMIDE RESIN MODIFIED BY BENZOXAZINE

ZHOU Ru-jin, WANG Xiang^*, WANG Jun, CAI Hao-peng

School of Materials Science and Engineering & Advanced Materials Manufacturing Equipment andTechnology Research Institute, Wuhan University of Technology, Wuhan 430070, China

Received:2018-03-23 Online:2018-12-28 Published:2018-12-28

摘要/Abstract

摘要： 未经改性的双马来酰亚胺(BMI)树脂存在着树脂溶解性差、固化成型温度高以及固化物脆性高等缺点。通过采用二烯丙基双酚A(DABPA)和3-乙炔基苯胺(m-APA)为扩链增韧剂与N,N′-(4,4′-二苯甲烷)双马来酰亚胺(BDM)共聚,双酚A型苯并噁嗪(BOZ)为共混增韧剂,得到了一种耐高温高韧性的树脂基体。采用FTIR和DSC研究了树脂体系的固化反应过程,同时进行了机械性能测试、热性能分析和显微结构分析。研究结果表明:BOZ树脂的加入能够有效提高双马树脂的韧性,在0wt%~30wt% BOZ树脂范围内,共混树脂体系固化物的冲击性能随着BOZ树脂质量分数的增加而增加,最高可达18.3 kJ/m²,相对于BAD422体系提高了53.8%;弯曲强度略微提升,一直保持在较高水平,最高可达到145.9 MPa;弯曲模量随着BOZ含量的增加而有缓慢升高的趋势。然而,耐热性与热稳定性能降低,但在添加30wt% BOZ树脂时,T_g仍可达250.8 ℃,初始分解温度T_5%为346.5 ℃,说明热性能依然较佳。

关键词: 双马来酰亚胺, 苯并噁嗪, 增韧, 耐热

Abstract: The unmodified pure bismaleimide resin has the shortcomings of poor solubility, high curing processing temperature and ease of brittleness fracture. 2,2′-Diallylbisphenol A (DABPA) and 3-aminophenylacetylene (m-APA) as chain extender toughening agent, bisphenol A phenylbenzoxazine (BOZ) as toughened agent were adopted to copolymerize with 4,4′-bismaleimidodiphenyl methane (BDM) resin. Then, a kind of resin matrix was prepared, which presented high temperature resistance and high toughness. The curing reaction of BOZ/BAD422 resin system was studied by Fourier transform-infrared spectroscopy and differential scanning calorimetry analyses, respectively. Mechanical measurements, thermal properties analysis, and microanalyses were conducted to assess the toughness and morphology of the cured blends. The research results show that the addition of BOZ resin can effectively increase the BMI resin toughness. In the range of 0~30wt% BOZ resin, the impact performance of the blended resin system is increased with the increase of the quality fraction of BOZ resin. The maximum impact performance reaches up to 18.3 kJ/m², which was 53.8% higher than the BAD422 system. The bending strength is slightly increased and remains at a high level compared with the BAD422 system, reaching at 145.9 MPa. The bending modulus slowly increases with the increase of BOZ content. However, heat resistance and thermal stability are reduced. But glass transition temperature (T_g) can still reach 250.8 ℃ and the initial decomposition temperature (T_5%) is 346.5 ℃ after the addition of 30wt% BOZ, indicating that the thermal performance is still good.

Key words: bimaleimide, benzoxazine, toughening, heat-resistance

中图分类号:

TB332

周如金, 王翔, 王钧, 蔡浩鹏. 苯并噁嗪增韧改性双马来酰亚胺树脂的制备与研究[J]. 玻璃钢/复合材料, 2018, 0(12): 21-27.

ZHOU Ru-jin, WANG Xiang, WANG Jun, CAI Hao-peng. PREPARATION AND STUDY OF TOUGHENED BISMALEIMIDE RESIN MODIFIED BY BENZOXAZINE[J]. Fiber Reinforced Plastics/Composites, 2018, 0(12): 21-27.

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