摘要
为优化CaO-Al_(2)O_(3)=B_(2)O_(3)=SiO_(2)(CABS)玻璃/Al_(2)O_(3)系低温共烧陶瓷(LTCC)流延工艺,提高CABS玻璃/Al_(2)O_(3)系LTCC材料性能,采用偶联剂对CABS玻璃/Al_(2)O_(3)复合粉体进行表面改性并对黏结剂的种类和用量进行优化,借助扫描电子显微镜(SEM)、差示扫描量热法(DSC)、X线衍射仪(XRD)等分析流延工艺优化对LTCC材料性能的影响。结果表明:偶联剂能有效提高CABS玻璃/Al_(2)O_(3)复合粉体在有机溶剂中的润湿性,提升浆料固含量和生瓷带密度,当硅烷偶联剂γ甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)质量分数为15%时,浆料固含量为6658%,生瓷带的密度为190 g/cm^(3),均达到最大值;通过探究3种不同分子量的聚乙烯醇缩丁醛(PVB)对生瓷带性能的影响,发现使用质量分数为9%的B98型(重均分子量为4×10^(4)~7×10^(4)g/moL)聚乙烯醇缩丁醛制备生瓷带的密度最大为2.03 g/cm^(3),该生瓷带经850℃烧成后,材料微观结构较为致密,综合性能优异,烧成密度为3.12 g/cm^(3),10 MHz下测得的介电常数为7.98,介电损耗为1.5×10^(-3),与Ag电极共烧呈现出较好的化学稳定性。
To optimize CaO-Al_(2)O_(3)-B_(2)O_(3)-SiO_(2)(CABS)glass/Al_(2)O_(3)low temperature co-fired ceramic(LTCC)tape process and improve the properties of CABS glass/Al_(2)O_(3)LTCC materials,the surface modification of CABS glass/Al_(2)O_(3)composite powder by coupling agent and the optimization design of bonding agent type and content were carried out.The effects of tape process optimization on the properties of LTCC materials were analyzed by scanning electron microscopy(SEM),differential scanning calorimetry(DSC)and X-ray diffraction(XRD).Results showed coupling agent could effectively improve the wettability of CABS glass/Al_(2)O_(3)composite powder in organic solvent,increase the solid content of slurry and the density of green tape.When the mass fraction of silane coupling agentγ-methacryloxypropyltrimethoxy silane(KH570)was 1.5%,the solid content of slurry was 66.58%,and the density of the green tape was 1.90 g/cm^(3),which reached the maximum value.By exploring the effects of three different molecular weights of polyvinyl butanal(PVB)on the properties of the green tape,it was found that the maximum density of the green tape was 2.03 g/cm^(3)when the mass fraction of B98(weight-average molarmass was 4×10^(4)7×10^(4)g/moL)polyvinyl butyral was 9%.The green tape prepared in the experiment had a dense microstructure and excellent comprehensive performance after firing at 850℃.The sintered density was 3.12 g/cm^(3),the dielectric constant measured at 10 MHz was 7.98,and the dielectric loss was 1.5×10^(-3).The co-firing with Ag electrode showed good chemical stability.
作者
韦鹏飞
周洪庆
李国铭
WEI Pengfei;ZHOU Hongqing;LI Guoming(School of Material Engineering,Jinling Institute of Technology,Nanjing 211169,China;College of Materials Science and Engineering,Nanjing Tech University,Nanjing 211800,China;Jiangsu Engineering Technology Research Center of Polyurethane Composite Reinforcement for Automobile,Liyang 213300,China)
出处
《南京工业大学学报（自然科学版）》
CAS
北大核心
2022年第6期633-639,共7页
Journal of Nanjing Tech University(Natural Science Edition)
基金
国家重点研发计划(2018YFF0216004)
江苏省产学研合作项目(BY2019030,BY2022030)。
