摘要
采用三元乙丙橡胶(EPDM)对硅橡胶共混改性,制备了硅橡胶/EPDM。对其烧蚀、力学和热性能进行了研究。结果表明:硅橡胶/EPDM的线烧蚀率随EPDM添加量增加而降低,当硅橡胶/EPDM为60/40时,由于材料烧蚀后表层形成了更加致密、坚实炭化层,其线烧蚀率达到0.09 mm/s。EPDM/硅橡胶热性能高于EPDM,其力学性能优于硅橡胶。
New silicone rubber/etheylene propylene diene rubber（SiR/EPDM） blended insulation materials for solid rocket motor were prepared by mechanical blending silicone rubber with EPDM.The insulations were characterized by liner ablation test.Mechanical properties and thermal properties were studied.Ablation test show that with increasing the content of EPDM in SiR/EPDM the linear ablative ratios decreased.When SiR/EPDM is 60/40,the linear ablative ratio decreased to 0.09 mm/s due to forming a relatively tough and rigid inorganic char layers.SiR/EPDM presents higher thermal stability in comparison with EPDM and better mechanical properties in comparison with silicone rubber respectively.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2010年第1期39-41,共3页
Aerospace Materials & Technology
