复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (1): 33-38.DOI: 10.19936/j.cnki.2096-8000.20260128.005

• 基础与力学性能研究 • 上一篇    下一篇

复合壳体用改性DETDA耐高温湿法缠绕树脂性能研究

郝尚1,2, 姚卓君1,2, 刘翔宇1,2, 王晓蕾1,2*, 田杰1,2   

  1. 1.上海复合材料科技有限公司,上海 201112;
    2.上海航天树脂基复合材料工程技术研究中心,上海 201112
  • 收稿日期:2024-11-14 出版日期:2026-01-28 发布日期:2026-03-12
  • 通讯作者: 王晓蕾(1980—),女,博士,研究员,主要从事复合材料制备工艺方面的研究,wangxiaolei7777@163.com。
  • 作者简介:郝尚(1995—),男,硕士,工程师,主要从事聚合物基胶黏剂和改性树脂方面的研究。
  • 基金资助:
    国家重点研发计划(2022YFB3707800)

Investigation on the performance of modified DETDA high-temperature wet winding resin for wet winding composite shell

HAO Shang1,2, YAO Zhuojun1,2, LIU Xiangyu1,2, WANG Xiaolei1,2*, TIAN Jie1,2   

  1. 1. Shanghai Composites Technology Co., Ltd., Shanghai 201112, China;
    2. Shanghai Engineering Research Center of Aerospace Resin Based Composite, Shanghai 201112, China
  • Received:2024-11-14 Online:2026-01-28 Published:2026-03-12

摘要: 针对碳纤维复合材料发动机壳体缠绕工艺的需求,采用有机硼化合物改性DETDA固化剂,增强反应位点活性。使其与TDE-85环氧树脂/活性稀释剂搭配使用,可将固化温度从190 ℃降至160 ℃,同时Tg可达241.5 ℃。对该体系树脂进行了黏度-时间、热分析测试,探究了改性固化剂对成型过程的影响,并对其树脂浇注体与复合材料壳体性能进行了探究。试验结果表明,树脂体系初始黏度为800 mPa·s,适用期为8 h,满足大型发动机壳体缠绕成型工艺需求。该树脂固化后在具有高Tg的同时,依然具有优良的强度和韧性。该树脂与T800碳纤维复合,制成的复合材料壳体密闭性完好,经测试,平行水压爆破试验的爆破压强均值为24.6 MPa。

关键词: 发动机壳体, 环氧树脂, 碳纤维, 湿法缠绕, 耐高温, 复合材料

Abstract: In response to the demand for carbon fiber composite engine shell winding technology, organic boron compounds were used to modify DETDA curing agents, enhancing the activity of reaction sites. By combining the modified curing agent with TDE-85 epoxy resin/reactive diluent, the curing temperature can be reduced from 190 ℃ to 160 ℃, and the Tg can reach 241.5 ℃. Viscosity time and thermal analysis tests were conducted on the resin of the system. Explored the influence of modified curing agents on the molding process, and the properties of its resin casting body and composite shell were explored. The initial viscosity of the resin system is 800 mPa·s, with a shelf life of 8 h, which meets the requirements of the winding molding process for large engine shell. After curing, the resin have a high Tg, and it have excellent strength and toughness. This resin was compounded with T800 carbon fiber, resulting in a composite shell with excellent sealing properties. The mean burst pressure tested by parallel water pressure burst test is 24.6 MPa.

Key words: engine shell, epoxy resin, carbon fiber, wet winding, high temperature resistance, composites

中图分类号: