氧化物协同改性对有机硅树脂抗烧蚀性能的影响  

Effect of Oxides Synergistic Modification on the Ablative Resistance of Organosilicone Resin

作　　者：王彬 丁振礼 陈永彬 WANG Bin;DING Zhenli;CHEN Yongbin(College of Mechanical and Electrical Engineering,Shandong University of Aeronautics,Binzhou,Shandong 256600,China;Binzhou Bohai Piston Co.,Ltd.,Binzhou,Shandong 256606,China)

机构地区：[1]山东航空学院,机电工程学院,山东滨州256600 [2]滨州渤海活塞有限公司,山东滨州256606

出　　处：《塑料》2024年第2期41-44,51,共5页Plastics

基　　金：山东省自然科学基金(ZR2021QE297);山东航空学院科研基金(2021Y16)。

摘　　要：为改善树脂基热防护材料的抗烧蚀性能,采用氧化硼和氧化钛作为填料,对环氧改性有机硅树脂进行协同改性,制备了改性复合材料。分析了氧化硼和氧化钛协同改性对复合材料抗烧蚀性能、力学性能和热稳定性的影响。结果表明,添加氧化硼和氧化钛后,复合材料的拉伸强度、密度和硬度大幅提高,热解失重显著减小,复合材料的马弗炉静态烧蚀和氧-乙炔烧蚀性能有效提升。在高温氧-乙炔烧蚀条件下,氧化硼和氧化钛的复合添加,能够在复合材料表面形成颗粒状与羽毛状的协同改善多孔结构,显著提升了复合材料的抗烧蚀性能,其线烧蚀率低至0.12 mm/s,与改性前相比,降幅超过75%。In order to improve of ablative resistance of resin-based thermal protection materials,the epoxy modified silicone resin was synergistically modified by boron oxide and titanium oxide.The effect of boron oxide and titanium oxide synergistic modification on the ablation resistance,mechanical property and thermal stability of the resin was studied.The results show that the addition of boron oxide and titanium oxide could significantly improve the tensile strength,density,hardness and pyrolytic residual weight of the composite,and effectively enhance the ablation resistance of the composite.Under the high temperature oxygen acetylene ablation condition,the granular and feathery porous structure formed on the surface of the composite,which significantly improved the anti-ablation performance of the composite.The minimum linear ablation rate was 0.12 mm/s.The decline was more than 75%in comparison with unmodified resin matrix.

关 键 词：环氧改性有机硅 协同改性 烧蚀性能 氧化硼 氧化钛 

分 类 号：TQ324.21[化学工程—合成树脂塑料工业]