METHOD FOR PREPARING TIN-BASED SOLDER PASTE USING A SYNTHESIS PROCESS BY CHEMICAL REDUCTION

摘要

PURPOSE: A method for manufacturing a tin-based solder paste using a chemical synthesis process by reduction is provided to manufacture the solder paste using a cheap tin precursor. CONSTITUTION: A method for manufacturing a tin-based solder paste using a chemical synthesis process by reduction is as follows: a step of melting a reducing agent and a surface stabilizing agent in a solvent(S110); a step of injecting a tin-containing liquid precursor to the reducing agent solution(S120); a step of reducing and cooling the reducing agent solution in which the liquid precursor is injected to synthesize minute particles of tin(S130); a step for collecting the tin-based minute particles by removing upper solution from the solution containing the tin-based minute particles(S140); and a step for manufacturing the paste by mixing the tin-based minute particles and flux(S150). [Reference numerals] (AA) Start; (BB) End; (S110) Step of dissolving a reducing agent and a surface stabilizing agent in a solvent; (S120) Step of injecting a tin-containing liquid precursor in the reducing agent solution; (S130) Step of forming minute tin particles; (S140) Step of collecting the minute tin particles; (S150) Step of mixing the minute tin particles with flux to manufacture paste