Rosin used for scaling powder as well as preparation method and application

Abstract

The invention relates to rosin used for scaling powder as well as a preparation method and application, belonging to the field of basic resin used for the scaling powder. Rosin which contains mercusicacid is taken as a raw material to prepare the rosin used for the scaling powder. The rosin used for the scaling powder has excellent solubility and crystallization resistance in a scaling powder solvent system, is high in weld-aid activity and low in corrosivity, and has very good wettability for brazing filler metal free of lead; and the rosin used for the scaling powder is good in both heat stability and film-forming property, and the formed welding spot is full, bright and regular.

Description

technical field

[0001] The invention relates to a basic resin for soldering flux, in particular to a rosin for soldering flux, its preparation method and application. Background technique

[0002] Rosin is a natural resource, and rosin and its prepared resin are important chemical raw materials, which are widely used in the fields of ink, coating, adhesive and electronics.

[0003] Rosin is a mixture of resin acids with similar structures, containing double bonds and carboxyl groups. People have used these groups of rosin to modify them in order to broaden their application.

[0004] In the electronic product industry, rosin has been widely used as the basic resin for soldering flux. Chinese patent, special-grade modified rosin and process for the electronic industry, publication number CN1065474A, discloses a kind of electronic rosin, namely refined rosin, refined hydrogenated rosin, alcohol Soluble maleated rosin glyceride and polymerized rosin are compounded to meet the ...

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