后处理温度对邻苯二甲腈基复合材料高温性能的影响
作者:
作者单位:

1.海军装备部驻北京地区第一军事代表室,北京 100076;2.航天材料及工艺研究所,北京 100076

作者简介:

程卫平,1968年出生,高级工程师,主要从事结构符合材料产品研究。E-mail:kunxiaoyang@sina.com

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中图分类号:

TB332

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Effect of Postcure Temperature on High Temperature Properties of Carbon Fiber/Phthalonitrile Resin Composites
Author:
Affiliation:

1.First Military Representative Office of Equipment Department for Navy, Beijing 100076;2.Aerospace Research Institute of Materials & Processing Technology, Beijing 100076

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    摘要:

    制备了MT300/邻苯二甲腈复合材料,分析了不同后处理温度对其在室温和400℃下力学性能的影响。结果表明,复合材料的后处理温度由315℃提高到330℃,会使其室温下的弯曲强度和模量明显提高;但继续提高后处理温度至375℃,室温下的弯曲强度则不断下降而弯曲模量未出现显著变化;在400℃的测试温度下,复合材料的弯曲强度、模量和压缩强度则均随后处理温度提升逐步提高。复合材料的室温压缩性能随后处理温度升高呈下降趋势,但在350℃处理后其室温压缩强度又出现明显上升。室温、400℃下层间剪切强度则均随后处理温度由315℃升高至375℃而呈先下降后上升趋势。

    Abstract:

    A novel MT300 carbon fabrics/phthalonitrile composite was manufactured through autoclave processing. The effects of postcure temperature on mechanical properties of composites were systematically examined, especially for mechanics performance at 400℃. The results show that the flexural modulus and strengths at room temperature improve significantly with the postcure temperature increased from 315℃ to 330℃. As the postcure temperature raised to 375℃, the RT flexural strength decreases constantly, but the RT flexural modulus remains stable. The flexural properties and compressive strengths at 400°C are obviously enhanced by the higher postcure temperature. Moreover, the RT compressive strengths show a downward trend with increasing postucre temperature, but exhibite a remarkable increase for composites postcured at 350℃. The RT and 400°C interlaminar shear strengths both initially decrease but then increase with the postcure temperature increased from 315℃ to 375℃.

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程卫平,杨昆晓,雷琴,孙宝岗,郭鸿俊.后处理温度对邻苯二甲腈基复合材料高温性能的影响[J].宇航材料工艺,2019,49(6):36-38.

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  • 收稿日期:2019-09-15
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  • 在线发布日期: 2019-12-30
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第十一届航天复合材料成形与加工工艺技术中心交流会 征文通知

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