Ultra-low-temperature co-fireable Li₂WO₄ substrate has been developed using an environmental friendly tape-casting technique. The nonaqueous tape-casting slurry comprised of an eco-friendly binder-solvent system consisting of polypropylene carbonate as binder and dimethyl carbonate as solvent. The structural, thermal, morphological, rheological, and electrical properties of the sintered substrate is investigated. The bulk ceramics sintered at 650 °C possess a relatively high thermal expansion coefficient of about 16 ppm/°C. The thermal conductivity of sintered tape measured at room temperature was about 2.6 W/m·K. The sintered substrate exhibits excellent microwave dielectric properties with a relative permittivity of 5.4 and a very low dielectric loss of 9.21 × 10^–5 at 5 GHz and is co-fireable with Ag electrode.

中文翻译：

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开发超低燃Li ₂ WO ₄陶瓷胶带的环保方法

超低温共烧Li ₂ WO ₄基材是采用环保的流延铸造技术开发的。该非水流延成型浆料由生态友好的粘合剂-溶剂体系组成，该体系由碳酸丙二酯作为粘合剂和碳酸二甲酯作为溶剂组成。研究了烧结基体的结构，热，形态，流变和电性能。在650℃下烧结的块状陶瓷具有约16ppm /℃的较高的热膨胀系数。室温下测得的烧结带的热导率约为2.6W / m·K。烧结后的基板表现出优异的微波介电性能，相对介电常数为5.4，介电损耗非常低，为9.21×10 ^–5 在5 GHz频率下可与Ag电极共烧。