一种轻质烧蚀结构一体化材料
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航天材料及工艺研究所,北京 100076

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TB33

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A Kind of Integration Materials of Light Ablative and Structure
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Aerospace Research Institute of Materials & Processing Technology,Beijing 100076

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    摘要:

    针对某产品的防热需求,研究了一种轻质烧蚀结构一体化材料,对其坯料(材料A)的热处理制度及预固化程度进行了研究,确定了最佳的热处理温度和时间;对材料A成型得到的轻质烧蚀结构一体化材料(材料B)的拉伸性能和热物理性能进行测试,通过电弧风洞对烧蚀性能进行考核,并对烧蚀后材料的纵向密度分布进行了分析。结果表明,添加一定的处理剂可提高材料的拉伸强度和断裂延伸率,处理剂可有效增强材料各组分的界面结合强度;材料B的热扩散率比材料C(中密度)低,在中高热流状态下,材料B烧蚀表面碳层完整致密,与材料C相比,线后退率略大,质量损失率略小,背壁温度较低,材料B具有更好的烧蚀隔热性能。

    Abstract:

    The integration of light ablative structure material is investigated based on the thermal protection demand of some products. The heat treatment technology and pre-cure degree of the perform of integration of light ablative structure material (which is named material A) are researched and the prior heat treatment temperature and time are determined. The tensile properties and thermal physical properties of the mid-low density glass plastic ablative structure material (which is named material B) which is the mold of material A are tested and the ablation performance is studied by arc-heated wind tunnel test. The density for longitudinal distribution of material B after ablation is investigated. It is shown that the tensile strength and fracture elongation rate of material B is increased by adding treating agent. The interface bonding strength of the components of the material B is enhanced effectively. The thermal diffusion coefficient of material B is lower than that of material C which has been applied for some products,showing that the insulation performance of material B is better. The surface of carbon layer forming with ablation is integrity and compact with mid-high heat flow arc-heated wind tunnel test. The line recession rate is more, the mass loss rate is less and back wall temperature is lower than those of material C. Material B has better ablation-insulation performances.

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引用本文

梁馨,方洲,代晓伟,吴良遵,高春才.一种轻质烧蚀结构一体化材料[J].宇航材料工艺,2021,51(5):84-87.

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  • 收稿日期:2021-05-27
  • 最后修改日期:2021-10-10
  • 录用日期:2021-07-13
  • 在线发布日期: 2021-10-26
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