High-stability paste flux and preparation method thereof

• Main Authors: LIU LIMIN, QIAN BIN, WANG YANNAN, QIN JUNHU, HE JIANGHUA, ZHANG XIN, TAKENOBU, LU HONGBO, LONG DENGCHENG, HE YUHAO, LYU JINMEI, HE HUAN, DUAN XUELIN, XIONG XIAOJIAO
• Format: Patent
• Language: Chinese; English
• Published: 24.06.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention discloses high-stability flux paste and a preparation method thereof. The flux paste comprises 30-45 wt.% of compound rosin, 3-10 wt.% of a compound thixotropic agent, 3-12 wt.% of a compound active agent, 30-50 wt.% of a compound organic solvent and 1-6 wt.% of an antioxidant. According to the preparation method of the flux paste, the compatibility and dispersity of substances in a system can be improved, the high activity of the flux paste is kept, and meanwhile the stability is improved. The high-stability flux paste prepared from the materials and welding powder are prepared into solder paste, and the storage stability, the printing stability and the welding performance of the high-stability flux paste are better than those of other solder paste. 一种高稳定性助焊膏及制备方法，所述助焊膏包含复配松香30-45wt.％、复配触变剂3-10wt.％、复配活性剂3-12wt.％、复配有机溶剂30-50wt.％、抗氧剂1-6wt.％。本发明的助焊膏制备方法可提高体系内物质的相容性和分散性，保持助焊膏的高活性，同时提高了稳定性。使用本发明所述物料制备的高稳定性助焊膏与焊粉配制成锡膏，其储存稳定性、印刷稳定性、焊接性能都较其他锡膏优异。