摘要: |
为了提高固体火箭发动机绝热层材料耐烧蚀性能,采用三元乙丙橡胶、芳纶短纤纤维、硼酚醛树脂、过氧化二异丙苯为无阻燃剂绝热层材料的基本体系,研究了空心微珠、陶瓷微珠、玻璃鳞片、聚碳酸酯、苯并噁嗪树脂、甲基苯基硅树脂等耐烧蚀填料对三元乙丙橡胶烧蚀性能的影响。结果表明,无机填料(空心微珠、陶瓷微珠、玻璃鳞片各10份)、聚碳酸酯15份、苯并噁嗪树脂15份、甲基苯基硅树脂15份,线烧蚀率依次减少,分别为(0.203~0.222)mm/s、0.185mm/s、0.165mm/s、0.154mm/s,甲基苯基硅树脂是最理想的耐烧蚀填料,对无阻燃剂耐烧蚀三元乙丙橡胶研究具有一定的参考价值。 |
关键词: 耐烧蚀材料;无阻燃剂三元乙丙橡胶;烧蚀性能 |
基金项目: |
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Influences of Ablation Resistant Materials on Ablation Properties of Fire Retardant-free EPDM Rubber |
Zhang Fan Fu Lixing Wang Yao
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(Faculty of Science, Northeast Forestry University, Harbin 150040)
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Abstract: |
To improve ablation resistant performances of insulation materials of SRM, EPDM rubber, aramid short-fiber, boron phenolic resin and DCP are used as fire retardant-free insulation system. In the meantime, the influences of hollow microspheres, ceramic microspheres and glass scales, PC, benzoxazine, methyl-phenyl vinyl silicone rubber, on ablative performances of insulation are studied. It is shown that inorganic filler (hollow microspheres, ceramic microspheres, and glass scales for 10 respectively), PC for 15, benzoxazine for 15, methyl-phenyl vinyl silicone rubber for 15. Their corresponding line ablation rate decreases in turn, respectively (0.203~0.222)mm/s, 0.185mm/s, 0.165mm/s, 0.154mm/s, and methyl-phenyl vinyl silicone rubber is ideal ablation resistant filler. It is expected that it will be of reference value to the study of fire retardant-free ablation resistant EPDM rubber. |
Key words: ablative materials;fire retardant-free EPDM;ablation performance |