轻质耐高温隔热材料及成型技术
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北京机电工程总体设计部,北京 100854

作者简介:

戴珍,1982年出生,博士,研究员,主要从事防隔热复合材料研究工作。E-mail:daizhen@iccas.ac.cn

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Processing and Properties of Light Weight High-temperature Insulation
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Beijing System Design Institute of Electro-Mechanic Engineering,Beijing 100854

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    摘要:

    针对型号更高的热环境要求,开展新型轻质耐高温隔热材料研究。采用耐高温酚醛树脂作为基体树脂,添加纤维、功能性填料,通过预混料片材进行低压固化成型,对所制备的隔热材料试片进行密度、热性能以及力学性能等的测试。结果表明:该材料体系密度为0.6~0.9 g/cm3,初始分解温度大于450 ℃,拉伸强度大于12 MPa,200 ℃拉伸强度大于10 MPa,热导率低于0.25 W/(m·K),并可根据实际应用需求,实现对材料各方面性能的调控。所制备的隔热材料试片通过某型号风洞考核验证,采用该材料体系制备的大尺寸异形结构舱体通过力热联合试验考核,满足总体设计要求。

    Abstract:

    In view of the higher requirements of thermal environment,a novel light-weight high-temperature insulation material was proposed and fabricated.The system used high temperature resistant phenolic resin as matrix and added fibers and functional fillers as reinforcement.Then by performing low-pressure curing molding through pre-mixed sheet to obtain the final material.The density,thermal properties and mechanical properties of the material were tested.The results indicate that the density of the material is 0.6 to 0.9 g/cm3,the initial decomposition temperature is higher than 450 ℃,the tensile strength under room temperature and 200 ℃ are higher than 12 MPa and 10 MPa respectively,and the thermal conductivity is lower than 0.25 W/(m·K).All the properties can be designed and regulated according to application environment.The prepared heat insulation material test piece passed the ablation examination of model wind tunnel,the large-sized special-shaped structural cabin prepared by the material system passed the combined force-heat test at the same time, and the results can meet the overall design requirements.

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戴珍,罗刚堂,董玲艳,洪义强,李茂源.轻质耐高温隔热材料及成型技术[J].宇航材料工艺,2020,50(2):27-30.

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  • 收稿日期:2019-08-03
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  • 在线发布日期: 2020-04-03