摘要
复合石英陶瓷(SiO_(2f)/SiO_(2))具有优异的力学性能和介电性能,被广泛应用于雷达天线罩,但结构中含有较多亲水基团和孔隙,易吸水吸潮。为降低SiO_(2f)/SiO_(2)的吸水吸潮率,以含有—CF_(3)的低表面张力三氟丙基三甲氧基硅烷(TFTES)为疏水修饰剂,甲基或氟代甲基硅树脂(JP或RU树脂)为涂料主体,有机蒙脱土(OMMT)为填料,制备了系列防水防潮涂层。研究结果表明:对复合石英陶瓷进行疏水修饰后,使用OMMT含量为1.5%的OMMT/RU涂覆3道,所得试样吸水率最小,为0.31%;使用OMMT含量为1%的OMMT/JP涂覆3道,所得试样吸潮率最小,为0.44%。综合厚度和质量增加因素考虑,涂覆3道OMMT_(1.5)/RU_(100)试样防水防潮能力最强,介电性能良好。
Composite quartz ceramics(SiO_(2f)/SiO_(2))have excellent mechanical and dielectric properties and are widely used in radar radomes,but there are several hydrophilic groups and pores in the structure,which is easy to absorb water and moisture.In this paper,a kind of silicone coating with excellent waterproof and moisture-proof properties was developed.A variety of waterproof and moisture-proof coatings were prepared by using TFTES,a low surface tension trifluoropropyl trimethoxy-silane(TFTES)containing—CF_(3) as a hydrophobic modification agent,methyl or fluoromethylsilicane(JP or RU resin)as the coating body and OMMT as the filler.The results showed that after hydrophobic modification of composite quartz ceramics,coated with OMMT/RU with 1.5%of OMMT for 3 times,the water absorption of the sample was the lowest(0.31%).With OMMT/JP with 1%OMMT content coated 3 times,the moisture absorption of the sample was the lowest(0.44%).Considering the factors of thickness and mass increase,the sample coated with 3 OMMT_(1.5)/RU_(100) has the best hydrophobic moisture resistance and good dielectric properties.
作者
李子芊
宋静怡
李子森
刘乾
焦剑
Li Ziqian;Song Jingyi;Li Zisen;Liu Qian;Jiao Jian(Northwestern Polytechnical University,Xi’an 710129,China)
出处
《涂料工业》
CAS
CSCD
北大核心
2023年第8期1-7,共7页
Paint & Coatings Industry
基金
大学生创新创业训练计划项目(S202110699570)。
关键词
复合石英陶瓷
疏水修饰
有机硅树脂涂层
有机蒙脱土
composite quartz ceramics
hydrophobic modification
silicone resin coating
organic montmorillonite
