单质硅粉改性环氧树脂烧蚀性能研究  

Study on Ablation Properties of Epoxy Resin Modified by Elemental Silica

作　　者：王彬 蔺文学 孙胃涛 陈永彬 王宇灿 WANG Bin;LINWen-xue;SUNWei-tao;CHEN Yong-bin;WANG Yu-can(College of Mechatronics Engineering,Binzhou University,Binzhou 256600,China;Binzhou Mengwei Dicastal Wheel Co.,Ltd.,Binzhou 256600,China)

机构地区：[1]滨州学院机电工程学院,山东滨州256600 [2]滨州盟威戴卡轮毂有限公司,山东滨州256600

出　　处：《塑料科技》2022年第9期50-53,共4页Plastics Science and Technology

基　　金：山东省自然科学基金项目(ZR2021QE297);滨州学院科研基金项目(2021Y16)。

摘　　要：以环氧树脂为基体,利用单质硅粉作为填料对其改性,制备不同硅含量的环氧树脂基复合材料,分析硅添加量对复合材料烧蚀性能影响。结果表明:单质硅粉添加能够显著提高复合材料的硬度和残炭率,有效提升复合材料的抗烧蚀性能。当单质硅粉添加量为90 g,复合材料的硬度最大为87 HD,残炭率最大为51.9%。氧-乙炔烧蚀过程中,单质硅粉添加量增大,提高了复合材料中心区域热解碳化层中的C含量,在复合材料边缘反应生成SiO2,提高复合材料表面碳化层厚度,改善了复合材料的抗烧蚀性能。Epoxy resin matrix composites with different silicon content were prepared by modifying epoxy resin with silicon powder as filler.The effect of silicon content on the ablation properties of composites was analyzed.The results show that the addition of silicon powder can significantly improve the hardness and carbon residue rate of composites,and effectively improve the ablation resistance of composites.When the addition amount of silicon powder is 90 g,the maximum hardness of composite is 87 HD,and the maximum carbon residue rate is 51.9%.In the process of oxyacetylene ablation,the addition of silicon powder increases,which increases the C content in the pyrolysis carbonization layer in the central region of composite,reacts to generate SiO2at the edge of composite,increases the thickness of the carbonization layer on the surface of composite,and improves the ablation resistance of composite.

关 键 词：单质硅 环氧树脂 烧蚀性能 热防护材料 

分 类 号：TB332[一般工业技术—材料科学与工程]