中国塑料 ›› 2025, Vol. 39 ›› Issue (12): 20-26.DOI: 10.19491/j.issn.1001-9278.2025.12.004

• 材料与性能 • 上一篇    下一篇

低温固化高韧性氰酸酯黏结剂制备及性能研究

柏安江(), 秦雨, 蔡璐, 赵永龙, 章家立()   

  1. 华东交通大学材料科学与工程学院,南昌 330000
  • 收稿日期:2024-12-17 出版日期:2025-12-26 发布日期:2025-12-22
  • 通讯作者: 章家立,男,博士,教授,从事光电功能高分子材料和高分子复合材料的研究,zhangjiajiali@163.com
    E-mail:1470089785@qq.com;zhangjiajiali@163.com
  • 作者简介:柏安江,男,硕士研究生,从事耐高温树脂基胶粘剂研究,1470089785@qq.com
  • 基金资助:
    国家自然科学基金项目(52361014);国家自然科学基金项目(21865009)

Preparation and properties of a low⁃temperature curing, high⁃toughness cyanate ester adhesive

BAI Anjiang(), QING Yu, CAI Lu, ZHAO Yonglong, ZHANG Jiali()   

  1. School of Materials Science and Engineering,East China JiaoTong University,Nanchang 330000,China
  • Received:2024-12-17 Online:2025-12-26 Published:2025-12-22
  • Contact: ZHANG Jiali E-mail:1470089785@qq.com;zhangjiajiali@163.com

摘要:

以双酚E氰酸酯树脂(BEDCy)为基体树脂,选用乙酰丙酮铝[Zn(acac)2]/二烯丙基双酚A(DBA)为混合催化剂,并以聚醚砜(PES)作为增韧剂,制备了一种低温固化且高韧性的氰酸酯胶黏剂。采用差示扫描量热法(DSC)、傅里叶变换红外光谱分析法和热重分析对DBA的催化效果进行了评价。并通过冲击试验、剪切试验以及热重分析探究不同比例的聚醚砜(PES)对BEDCy力学性能和热稳定性能的影响。结果表明,相较于单独使用Zn(acac)2催化BEDCy,酚类化合物和Zn(acac)2构成的混合催化剂有更好的催化效果,其中6 %DBA与0.05 %Zn(acac)2对BEDCy固化的催化效果最佳,其DSC曲线的峰温从218 ℃降到了194 ℃,实现了在200 ℃以下的完全固化;与壬基酚(NoP)/Zn(acac)2/BEDCy体系相比,DBA/Zn(acac)2/BEDCy体系具有更好的固化性能和热稳定性;以5 %PES作为CE的增韧剂时,粘接强度比未改性的CE树脂提高了64 %;且其5 %热失重温度达到了430 ℃,具有良好的耐热性,实现了胶黏剂耐温性和韧性上的统一。

关键词: 氰酸酯, 胶黏剂, 低温固化, 增韧

Abstract:

A low⁃temperature curing and high⁃toughness cyanate ester adhesive was developed using bisphenol⁃E cyanate ester (BEDCy) as the base resin. The adhesive system employed a hybrid catalyst of aluminum acetylacetonate [Zn(acac)₂] and diallylbisphenol A (DBA), with polyethersulfone (PES) as a toughening agent. The catalytic performance of DBA was evaluated by differential scanning calorimetry (DSC), Fourier⁃transform infrared spectroscopy, and thermogravimetric analysis. Results indicated that the Zn(acac)₂/DBA hybrid catalyst was more effective than Zn(acac)₂ alone in promoting the curing of BEDCy. An optimal formulation with 6 wt% DBA and 0.05 wt% Zn(acac)₂ reduced the DSC curing peak temperature from 218 to 194 °C, enabling complete curing below 200 °C. This DBA/Zn(acac)₂/BEDCy system also exhibited superior curing properties and thermal stability compared to a system catalyzed by nonylphenol. Furthermore, the impact of PES content on the mechanical and thermal properties was investigated. The incorporation of 5 wt% PES as a toughener resulted in a 64 % increase in bond strength compared to the unmodified CE, while maintaining a high 5 % weight⁃loss temperature of 430 ℃. This work successfully achieves an adhesive with an effective balance of low curing temperature, high toughness, and excellent thermal resistance.

Key words: cyanate ester, adhesive, low temperature curing, toughen

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