摘要
采用30%H_(2)O_(2)和乙烯基三甲氧基硅烷(VTMS)对Ca_(0.7)La_(0.2)TiO_(3)(CLT)进行了羟基化(CLT-OH)和硅烷化(CLT-VT)改性,分别在陶瓷表面获得了亲水和疏水层,两者分别与树脂间形成氢键作用和物理吸附。采用熔融浇铸法,将改性后的陶瓷和乙烯基含硅芳炔树脂树脂(PSAE)制备成具有系列化介电常数微波介质复合材料,研究了不同陶瓷/树脂界面作用力对复合材料性能的影响。结果表明,40vol%CLT-VT/PSAE获得了10 GHz下最优的介电性能,介电常数13.8,介电损耗3.16×10^(-3);40vol%CLT-OH/PSAE获得了最优的综合性能,弯曲强度达50 MPa,介电常数14.77,介电损耗3.29×10^(-3)。
Ca_(0.7)La_(0.2)TiO_(3)(CLT) was respectively hydroxylated(CLT-OH)by 30% H_(2)O_(2) and modified(CLT-VT)by Trimethoxy(vinyl)silane(VTMS).The hydrophilic and hydrophobic layers are respectively obtained on the ceramic surface,and they form hydrogen bonding and physical adsorption with the resin.By melt casting method,the modified ceramics and vinyl silicon-containing aryne resins(PSAE)were prepared into a series of microwave dielectric composite materials with different dielectric constants.The effect of different ceramic/resin interface forces on the properties of composite materials was studied.It was found that 40 vol%CLT-VT/PSAE achieved the best dielectric performance at 10 GHz,with a dielectric constant of 13.8 and a dielectric loss of 3.16×10^(-3) and 40 vol%CLT-OH/PSAE has obtained the best overall performance,with a bending strength of 50 MPa,a dielectric constant of 14.77,and a dielectric loss of 3.29×10^(-3).
作者
缪金波
彭海益
黄燕春
姚晓刚
邓诗峰
MIAO Jinbo;PENG Haiyi;HUANG Yanchun;YAO Xiaogang;DENG Shifeng(Key Laboratory of Special Functional Polymeric Materials and Related Technology,School of Material Science and Engineering,East China University of Science and Technology,Shanghai 200237;Information Materials and Devices Research Center,Shanghai Institute of Ceramics,Chinese Academy of Science,Shanghai 200050)
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2022年第3期30-36,共7页
Aerospace Materials & Technology
基金
装备发展部重点基金(61409220301)
中央高校基本科研业务费专项资金资助(50321042017001)。
关键词
氢键
物理吸附
微波介质复合材料
力学性能
介电性能
Hydrogen bonding
Physical adsorption
Microwave Dielectric composites
Mechanical properties
Dielectric properties
