借助高效流延成型工艺,探讨了多种溶剂组合与分散剂对玻璃/陶瓷浆料体系流变性能的影响,通过对玻璃/陶瓷料、塑化剂与粘结剂等配制浆料的组成配比进行优化设计,详细研究了浆料中各组成含量对流延生料带体积密度,以及对烧成后玻璃/陶瓷致密度、物相等微观结构与性能的影响。结果表明,适当的浆料组成类型及含量对提高试样的烧成致密度、降低高频介电损耗、改善微观结构均有明显的影响；850℃烧结试样10 MHz测试,相对介电常数为7.7,介电损耗2.0×10-4,25~500℃热膨胀系数(7.30~7.65)×10-6/℃,满足模块级LTCC大面积高密度封装要求。
The influence of different solvent systems and the dispersant content on the rheological properties of glass/alumina were investigated using efficient tape casting technology.Slurry formulations were optimized by the method of changing the ration of the inorganic to the total present in tape and the ration of plasticizer to binder.The effect of tape-casting slurry composition on bulk density of green tape and bulk density,micro-structure and phase of the sintered samples was studied in detail.The results showed that the appropriate com-position and content of slurries improved bulk density,dielectric properties and microstructure of sintered sam-ples.The samples sintered at 850 ℃ had a dielectric constant of 7.7,a dielectric loss of 2.0×10-4 and a ther-mal expansion coefficient of (7.30-7.65)×10-6/℃ in the range of 25-500 ℃,which satisfied with the require-ments of LTCC packaging materials.
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