In the no-clean solder wire, there is a special flux in the core, so what is the composition of the flux? The following is introduced by the Shenzhen manufacturer ’s editor:
1.Co-solvent: prevent the tendency of solid components such as activator to dissolve from solution, and avoid poor and uneven distribution of activator;
2.Film forming agent: During the soldering process of the lead pin, the applied flux deposits and crystallizes to form a uniform film.The residue after high temperature decomposition can be quickly cured, hardened due to the presence of the film forming agent. Reduce stickiness;
3. Resin and its derivatives, the resin here usually refers to rosin, which can play a good antioxidant role;
4.Anti-corrosive agent: reduce the residue of solid components such as resin and activator after high temperature decomposition;
5. Organic acid activator: one or more of organic acid dibasic or aromatic acids, such as succinic acid, glutaric acid, itaconic acid, o-hydroxybenzoic acid, succinic acid, pimelic acid, Malic acid, succinic acid, etc. Its main function is to remove the oxide on the lead pins and the oxide on the surface of the molten solder, which is one of the key components of the flux;
6, organic solvents: one or more of ketones, alcohols, esters, commonly used ethanol, propanol, butanol; acetone, toluene isobutyl ketone; ethyl acetate, butyl acetate, etc. as The liquid component, its main role is to dissolve the solid components in the flux to form a uniform solution, which is convenient for the component to be soldered to evenly coat the appropriate amount of flux components, and it can also clean light dirt and oil on metal surfaces;
7. Surfactant: It is mainly a fatty acid or aromatic non-ionic surfactant. Its main function is to reduce the surface tension generated when the solder contacts with the lead metal, enhance the surface wetting force, and enhance the organic acid. The penetrating power of the activator can also function as a foaming agent;
Shenzhen Xinghongtai Tin Industry Co., Ltd. is a professional solder wire manufacturer.It has been focusing on the development and production of solder wires for 12 years.It provides solder wires, leaded solder wires, solder wires, solder bars and solder wires of different specifications.