Method for preparing pretreating agent applied to spraying of inner wall of automobile water tank

Abstract

The invention relates to the technical field of automobile part processing, in particular to a method for preparing a pretreating agent applied to spraying of an inner wall of an automobile water tank. The method comprises the following steps of firstly adding 25 parts of furfural resin and 15 parts of water into a container, and stirring for 5 minutes; then slowly adding 1.5 parts of hydrochloric acid while stirring, and stirring for 5 minutes after the completion of the adding operation; then slowly adding 20 parts of polyacrylate emulsion and 10 parts of water while stirring, and stirring for 5 minutes after the completion of the adding operation; then slowly adding 0.3 parts of uronic acid while stirring, and stirring for 5 minutes after the completion of the adding operation; finally slowly adding 1 part of potassium chloride and 15 parts of water, and stirring for 10 minutes. The preparation method provided by the invention has the advantages that not only can the dissolving properties of all substances be improved, but also the possibility of particle agglomeration can be prevented through a method of gradually adding, therefore the pretreatment capability of the pretreating agent is significantly improved.

Description

technical field [0001] The invention relates to the technical field of auto parts processing, in particular to a preparation method of a pretreatment agent used for spraying the inner wall of an auto water tank. Background technique [0002] In order to better improve the structural performance of the automobile water tank and prolong its service life, it is mainly sprayed with a nano-film on its inner wall to provide its structural strength. However, because only the film is sprayed on the inner surface, and the protective film substrate is not used, the film on the surface of the sprayed product will gradually fade after a period of use, which will have a great impact on the structural performance of the automobile water tank. Contents of the invention [0003] For the technical problems existing in the prior art, the object of the present invention is to provide a kind of preparation method for the pretreatment agent that is used for the spraying of automobile water tan...

AI Technical Summary

Problems solved by technology

However, because only the film is sprayed on its inner surface, and the protective film substrate is not used, the film on the surface of the sprayed product will gradually fade after being used for a period of time, which will have a great impact on the structural performance of the automobile water tank.