炔丙醚酰亚胺改性双马来酰亚胺树脂的制备与性能
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1.华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海 200237;2.上海新力动力设备研究所,上海 200125

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TB332

基金项目:

上海航天科技创新基金(SAST2019-106)


Preparation and Property of Propargyl Ether Imide Modified Bismaleimide Resin
Author:
Affiliation:

1.Key Laboratory of Specially Functional Polymeric Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237];2.Shanghai Xinli Power Equipment Institute, Shanghai 200125

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    摘要:

    合成了2,2-双[N-(4-炔丙氧基苯基)-3,4-二酰亚胺苯基]六氟丙烷(6FDPE),与(4,4''-二苯基甲烷)双马来酰亚胺(BDM)和二烯丙基双酚A(DABPA)的改性双马来酰亚胺(BDM/DABPA)树脂共混,制备了BDM/DABPA/6FDPE共混树脂。对共混树脂的黏温特性、固化反应和固化树脂的热稳定性和力学性能等进行了研究。结果表明,6FDPE能够扩展BDM/DABPA树脂的加工窗口至70 ℃以上。随着6FDPE的添加量增加,共混改性树脂在氮气氛围下共混树脂固化物的5%热失重温度()升高达到416 ℃,800 ℃的残留率(Yr800℃)高达41%,但玻璃化转变温度(Tg)会降低,仍高于300 ℃。6FDPE可增韧BDM/DABPA树脂,共混改性树脂的冲击强度提高至23.9 kJ/m2,增加了55%,但树脂浇铸体的弯曲强度和拉伸强度分别降低至132 MPa和78 MPa,都下降了13%。

    Abstract:

    A 2,2-bis[N-(4-propargyloxyphenyl)-3,4-dimidophenyl] hexafluoropropane (6FDPE) was synthesized and blended with (4,4’-diphenylmethane) bismaleimide(BDM) and diallyl bisphenol A(DABPA) modified bismaleimide (BD/DABPA) resin to prepare BD/DABPA/6FDPE blend resins. The viscosity-temperature behavior and cure reactions of the blend resins of the cured blend resin, and the thermal stability and mechanical property of the cured blend resins were studied. The results show that the processing window of BDM/DABPA/6FDPE resins are broader than 70 ℃. The thermal stability of the cured blend resin increases with increase of 6FDPE content. The temperature of 5% weight loss () and residual yield at 800 ℃ (Yr800℃) of the cured blend resin can increase to 416°C and 41%, respectively. The impact strength can increase by 55%, to 23.9 kJ/m2. However, the glass transition temperature (Tg) of the cured BDM/DABPA resin decreases with increase of 6FDPE content in the blend resin. Accordingly, the bending strength and tensile strength of the cured blend resin drop by 13%, to 132 MPa and 78 MPa, respectively.

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张慧,王林祥,郑庆,袁荞龙,黄发荣.炔丙醚酰亚胺改性双马来酰亚胺树脂的制备与性能[J].宇航材料工艺,2023,53(4):36-42.

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历史
  • 收稿日期:2021-08-05
  • 最后修改日期:2023-08-21
  • 录用日期:2021-11-19
  • 在线发布日期: 2023-08-30
  • 出版日期:
第五届航天高分子材料制备与应用工艺技术交流会 征文通知

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