High-solid-content quick-drying water-based white primer and preparation method thereof

Abstract

The invention relates to a high-solid-content quick-drying water-based white primer and a preparation method thereof. The high-solid-content quick-drying water-based white primer is basically prepared from 25-35% of acrylic emulsion, 15-25% of white slurry, 10-18% of calcium carbonate, 5-10% of kaolin, 5-10% of talcum powder, 2-5% of assistant, 2-6% of film-forming agent, 3-5% of thickening rheologic agent and 15-25% of water. The white primer has the characteristics of excellent sanding property, excellent filling property and high drying rate, does not adhere to abrasive paper after drying 1 hour in summer, and is economical and practical; the white primer can effectively seal the wood seams in a medium-titer plate base, and stabilize the internal structure of the base material; after construction, the deformation rate of the base is low, and the fibers do not expand basically; and thus, the white primer can be used for solid color painting of a medium-titer plate base wood door, and can also be used for painting a sealed splint base, thereby having high market application value.

Description

technical field [0001] The invention relates to a high-solid fast-drying water-based white primer and a preparation method thereof, in particular to a fast-drying water-based white primer with good sanding properties, filling properties and high solid content. Background technique [0002] Due to the problems of hardness, fullness and price of water-based wood coatings, the promotion and application of water-based wood coatings in the market are limited to a certain extent, especially for uneven substrates, such as plywood or MDF. To seal all the fibers on the MDF often requires multiple constructions, and the customer hopes to reduce the number of constructions in order to reduce the cost while ensuring the sealability. Only apply two coats of water-based white primer on the MDF, and Good sanding and filling properties are required, and after drying for 1 hour in summer (temperature about 30°C, humidity about 70%), sand non-stick sandpaper, which has a good sealing effect o...

AI Technical Summary

Problems solved by technology

However, when ordinary water-based white primers are used for closed coating on MDF due to problems such as low solid content and poor sealing properties, the following problems often occur: some have good filling properties but poor sanding properties; Good but poor sealing performance, requiring multiple constructions; some have good performance but are expensive and customers do not accept them; and the storage stability of the white primer is not good, and a large amount of precipitation occurs, etc.