多聚磷酸铵改性环氧有机硅树脂的抗烧蚀性能  

Ablation Performance of Ammonium Polyphosphate Modified Epoxy Silicone Resin Composites

作　　者：崔增林 张东宏 寇彦飞 尤海珍 李腾宇 李轩 CUI Zeng-lin;ZHANG Dong-hong;KOU Yan-fei;YOU Hai-zhen;LI Teng-yu;LI Xuan(Tongchuan Special Equipment Inspection Institute,Tongchuan 727100,China;Inner Mongolia Institute of Special Equipment Inspection and Research,Hohhot 010010,China;School of Mechanical Engineering,North University of China,Taiyuan 030051,China;College of Mechanical Engineering,Sichuan University of Science&Engineering,Zigong 643000,China)

机构地区：[1]铜川市特种设备检验所,陕西铜川727100 [2]内蒙古自治区特种设备检验研究院,内蒙古呼和浩特010010 [3]中北大学机械工程学院,山西太原030051 [4]四川轻化工大学机械工程学院,四川自贡643000

出　　处：《塑料科技》2024年第4期60-64,共5页Plastics Science and Technology

基　　金：内蒙古自治区科技计划项目(2022YFSH0015);陕西省市场监督管理局科技计划项目(2023KY30);四川省科技计划项目(2023YFG0239);四川轻化工大学科研创新团队计划项目(H92322)。

摘　　要：为提高环氧有机硅树脂的耐烧蚀性能,制备了多聚磷酸铵(APP)改性的环氧有机硅树脂复合材料,研究了APP含量对复合材料在氧-乙炔烧蚀环境中耐烧蚀性能的影响。结果表明:添加APP能够有效提高环氧有机硅树脂的耐烧蚀性能,改善烧蚀产物层的抗剥落能力和完整性。当APP添加量为15%时,复合材料烧蚀产物层致密性和完整性最好,线烧蚀率和质量烧蚀率均最低,分别为0.162 mm/s和0.065 g/s,较环氧有机硅树脂分别降低44.9%和75.9%。当APP含量超过15%,随APP含量增加试样烧蚀产物的开裂和剥落倾向严重。添加APP能降低环氧有机硅树脂的热失重率,APP添加量为15%时,复合材料的热失重率约为32.79%,较环氧有机硅树脂低约43.91%。In order to enhance the ablative resistance of epoxy silicone resin,the ammonium polyphosphate(APP)modified epoxy silicone resin composites were prepared,and the impacts of APP content on the ablative resistance of the composites in an oxygen-acetylene ablation environment were investigated.The results show that the addition of APP can effectively enhance the high-temperature ablative resistance of epoxy silicone resin composites,improving the adhesion strength and integrity of the ablative product layer.When the APP content is 15%,the density and integrity of the ablative product layer formed on the composite are optimal.The linear ablation rate and mass ablation rate are both at their lowest,measuring 0.162 mm/s and 0.065 g/s,respectively,representing a reduction of approximately 44.9%and 75.9%compared to epoxy silicone resin.When the APP content exceeds 15%,there is an increasing tendency for cracking and peeling of the ablative product in the specimens.The addition of APP can reduce the thermogravimetric rate of epoxy silicone resin,and when the addition amount of APP is 15%,the thermogravimetric rate of the composite material is about 32.79%,which is about 43.91%lower than that of epoxy silicone resin.

关 键 词：多聚磷酸铵 环氧有机硅树脂 烧蚀 氧-乙炔 TG分析 

分 类 号：TB332[一般工业技术—材料科学与工程]