High-solderability varistor electrode silver paste and preparation method

• Main Authors: LIU WENPING, QIN HAIQING, ZHANG ZHENJUN, ZHANG JIANWEI, LEI XIAOXU, LIN FENG, XIAO LEYIN, WANG LIHUI, LU ZONGLIU, LU ANJUN, MENG GUANGHAI
• Format: Patent
• Language: Chinese; English
• Published: 20.04.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; RESISTORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

The invention discloses a high-solderability varistor electrode silver paste and a preparation method thereof. The method includes following steps: 1) preparing glass powder: weighing a raw material,uniformly mixing the material, smelting and taking out the material, performing water quenching, crushing, ball milling and sieving, and obtaining the glass powder through sieving after drying; 2) preparing an organic carrier: weighing resin and an organic solvent, dissolving the resin in the organic solvent, then adding dispersing agent and anti-settling agent as additives, and performing uniformstirring to form the organic carrier; and 3) weighing silver powder, tin alloy powder, the glass powder and metallic oxide powder into the organic carrier, performing uniform stirring, grinding and vacuum degassing, and obtaining the silver paste after qualified detection. 本发明公开了种高可焊性压敏电阻用电极银浆及其制备方法，包括如下步骤：1)制备玻璃粉：称取原料，混合均匀，进行熔炼，然后取出，水淬、粉碎、球磨、过筛，干燥后过筛得到玻璃粉；2)制备有机载体：称取树脂和有机溶剂，将树脂溶于有机溶剂中，再加入分散剂和防沉剂作为助剂，搅拌均匀形成有机载体；3)称取银粉、锡合金