Method for producing white dry powder building coating base stock

Abstract

The invention provides a method for producing a white dry powder building coating base stock. The method comprises the following steps: by using designed whiteness of the white dry powder building coating base stock as B1, measuring whiteness B2 of base stocks formed by different coating basic components under the condition without a white pigment; measuring a weight W of the white pigment which needs to be added into the coating basic components when the B2 is regulated to the B1; making a relational graph or / and a table of the B2 and the W; providing the coating basic components, carrying out metering and mixing and measuring whiteness B3 of a mixture; and according to the relational graph or / and the table of the B2 and the W, which is made in the step 3, searching a weight Wt of the white pigment which needs to be added when the B3 is regulated to the B1, and adding Wt of white pigment to obtain the white dry powder building coating base stock with required whiteness. According to the invention, after the basic components are mixed, the pigment is added; for the prepared white dry powder building coating base stock, whiteness of each batch of products is basically kept consistent; and in addition, production quality can be controlled and yield is improved.

Description

technical field [0001] The invention relates to a production method of dry powder architectural paint, in particular to a production method of white dry powder architectural paint base material. Background technique [0002] Architectural coatings mainly refer to coatings used for building exterior walls, interior walls, ceilings, floors, etc., which have decorative, protective and residential performance improvement functions. Benzene substances, formaldehyde and other organic volatiles, organic solvents, and heavy metals in early paints have caused serious pollution to the environment and humans, and there is a risk of pollution in every link from production to use. With the advancement of technology and people's emphasis on pollution, the paint industry has entered the era of "water-based paint" from the "oil-based paint" era. [0003] At present, architectural coatings are mainly water-based coatings, and water-based coatings are coatings with water as the dispersion me...

AI Technical Summary

Problems solved by technology

Those skilled in the art know that in addition to the basic components of the paint, the paint generally also includes pigments to obtain the desired color, but due to the particularity of the dry powder paint product (such as multi-color varieties, high color uniformity requirements, and many changes in raw material types) , large differences, etc.), different batches of dry powder coatings are prone to poor color chroma

The existing production process of dry powder coatings generally adopts a batch-mixing packaging process, and the differences between different batches are marked separately. This batch packaging method has disadvantages such as low production capacity and poor color management.

[0007] In order to increase production capacity and strengthen color management, the continuous production process of white dry powder architectural coating base material can be adopted, and then the white dry powder architectural coating base material can be matched in color. This production process has a large production capacity, but although this method solves the production capacity problem, the batch There is a difference in whiteness between the two, which leads to the unavoidable problem of color difference of the paint after color matching

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