在震动力场下燃烧普通硅橡胶复合材料,很容易被烧穿。通过添加莫来石纤维(MF)作为陶瓷层的桥梁骨架,制备陶瓷化防火震动硅橡胶复合材料,并研究MF含量对硅橡胶复合材料抗震动燃烧性能的影响。结果表明:随着MF含量的增加,硅橡胶复合材料的耐火性能得到明显的提升,防火等级达到V-0级,弯曲强度达到2.914MPa,陶瓷化率提高84.4%,线性烧蚀率大幅度降低,在1050℃,5g的震动加速度下燃烧15min,试样仍然没有被烧穿。
Initial silicone rubber composite was easy to burn through in the case of vibrational combustion.Mullite fiber(MF) was added as the bridge skeleton of the ceramic layer,and the effect of MF content on vibration-resistant combustion performance of silicone rubber composites was studied.The results shown that with the increase of MFcone rubber fireproof property of the composites have been obvious improved,fire prevention level reach V-0,bending strength reached 2.914MPa,ceramization rate increased by 84.4%,and the linear ablation rate was greatly reduced.The sample was not burned through at 1050℃ and 5g of vibration acceleration for 15min.
[1] 张振英.高分子密封材料的研究[J].高分子材料科学与工程,1993,23(2):122-127.
[2] 柯玉超,夏迎松,吴蕾,等.电池包壳体用橡胶密封件密封性能的研究[J].橡胶工业,2020,67(7):483-488.
[3] 雷海军.航空用橡胶型材在我国的发展及应用[J].特种橡胶制品,2015,36(5):79-82.
[4] 陈晨.飞机橡胶密封材料的发展及应用[J].橡塑技术与装备,2016,42(2):56-57.
[5] Chouchaoui B.Rubber seal development via computer simulation[J].Sealing Technology,2016,245(1):52-56.
[6] 李蒙,冯洪福,刘守兴,等.硫化条件对民用飞机刹车系统液压橡胶密封圈低温密封特性的影响[J].特种橡胶制品,2019,2(1):9-12.
[7] 张敏,李林辉,李立伟.航空用防火橡胶密封型材的研制[J].特种橡胶制品.2017,38(4):32-36.
[8] 范召东,孙全吉,黄艳华,等.有机硅材料在航空工业的应用[J].有机硅材料,2015,29(6):491-498.
[9] 刘梅,王恒芝,孙全吉.高强度有机硅密封剂的耐热性能研究[J].有机硅材料,2009,23(2):89-94.
[10] 聂梅,范召东.阻燃防火有机硅高分子材料研究进展[J].化工新型材料,2008,36(2):8-9.
[11] Uno H,Tamura K,Yamada H,et al.Preparation and mechanical properties of exfoliated mica-polyamide 6 nanocomposites using sericite mica[J].Applied Clay Science,2009,46(1):81-87.
[12] 苏柳梅,樊星,尤红梅,等.硅橡胶/黏土可瓷化复合材料的热行为及微观结构[J].粉末冶金材料科学与工程,2011,16(6):856-863.
[13] Anyszka R,Bielinski D M,Pedzich Z,et al.Influence of surface-modified montmorillonites on properties of silicone rubber-based ceramizable composites[J].Journal of Thermal Analysis and Calorimetry,2015,119(1):111-121.
[14] Alexander G,Cheng Y B,Burford R P,et al.Fire resistant polymeric compositions:US20060068201A1[P].2003-10-17.
[15] Mansouri J,Burford R P,Cheng Y B.Pyrolysis behavior of silicone rubber-based ceramifying composites[J].Materials Science and Engineering:A,2006,425(1):7-14.
