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摘要:
通过合理设计对比模型，提出一种新型树脂基复合材料引射因子测试方法，针对新型树脂基复合材料开展电弧风洞试验，获得树脂基材料有热解气体引射和无热解气体引射时壁面热流密度，研究树脂基材料在特定热环境条件下的引射效应，获取能够评价新型树脂基材料引射效应的引射因子。结果表明：试验状态下，石英酚醛复合材料炭化速度大于石英杂化酚醛复合材料；石英酚醛复合材料引射因子约为0.825，在实际设计中此类材料需要考虑引射效应对表面热流的影响；石英杂化酚醛复合材料引射因子约为1，热解气体引射产生的热阻塞效应基本可以忽略。
Abstract:By reasonably designing the comparison model, a new test method for the injection factor of resin matrix composites is proposed. The arc wind tunnel test is carried out for the new resin matrix composites to obtain the wall heat flux density of resin matrix materials with and without pyrolysis gas injection. The ejection factor, which may assess the ejection effect of new resin matrix materials, is generated by examining the ejection effect of resin matrix composites under particular thermal environment circumstances. The results show that: the carbonization rate of quartz phenolic materials is higher than that of quartz hybrid phenolic materials; The ejection factor of quartz phenolic materials is about 0.825. The impact of the ejection effect on the flux of surface heat should be taken into account in practical design. Quartz hybrid phenolic materials have an ejection factor of roughly 1, making it possible to largely overlook the thermal blocking effect brought on by gas pyrolysis.
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Key words:
- New resin matrix composites /
- ejection effect /
- ejection factor /
- heat flux /
- experiment test
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图 4 石英酚醛复合材料加热400 s后各层温度
Figure 4. Temperature of layers of quartz phenolic composite heated for 400 s
图 5 假设炭化厚度12 mm时加热50 s后各层温度
Figure 5. Temperature of each layer after heating 50 s assuming that carbonized 12 mm thickness
图 6 石英酚醛复合材料各层温度随时间变化
Figure 6. Layer temperature vary with time for quartz phenolic composites
图 7 石英酚醛复合材料各层温度测量差随时间变化
Figure 7. Measure difference of layer temperature vary with time for quartz phenolic composites
图 8 石英杂化酚醛复合材料各层温度随时间变化
Figure 8. Layer temperature vary with time for quartz hybrid phenolic composites
图 9 石英杂化酚醛复合材料各层温度测量差随时间变化
Figure 9. Measure difference of layer temperature vary with time for quartz hybrid phenolic composites
图 10 石英酚醛复合材料炭化深度随时间变化
Figure 10. Carbonation depth vary with time for quartz phenolic composites
图 11 石英杂化酚醛复合材料炭化层深度随时间变化
Figure 11. Carbonation depth vary with time for quartz hybrid phenolic composites
图 12 石英酚醛复合材料表面热流测量结果
Figure 12. Surface heat flux measurements for quartz phenolic composites
图 13 石英酚醛复合材料表面热流随时间变化
Figure 13. Surface heat flux vary with time for quartz phenolic composites
图 14 石英酚醛复合材料引射因子随时间变化
Figure 14. Ejector factor vary with time for quartz phenolic composites
图 15 石英杂化酚醛复合材料表面热流测量结果
Figure 15. Surface heat flux measurements for quartz hybrid phenolic composites
图 16 石英杂化酚醛复合材料表面热流随时间变化
Figure 16. Surface heat flux vary with time for quartz hybrid phenolic composites
图 17 石英杂化酚醛复合材料引射因子随时间变化
Figure 17. Ejector factor vary with time for quartz hybrid phenolic composites
表 1 材料基础物性参数
Table 1. Fundamental physical parameters of materials
材料 密度/
（kg·m−3）热导率/
（W·m−1·K−1）比热容/
（J·kg−1·K−1）xy方向拉
伸强度/MPa压缩强
度/MPa石英酚醛 0.91 0.22 1.1 20.8 66.7 石英杂
化酚醛0.496 0.05 1.0 29.9 2.5 
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