External wall coating added with fiber components such as paper scraps, and preparation method of external wall coating

Abstract

The invention discloses an external wall coating added with fiber components such as paper scraps. The coating is characterized by being prepared from the following raw materials in parts by weight: 34-37 parts of water-based polyurethane emulsion, 3-5 parts of hydroxyethyl cellulose, 13-15 parts of sericite powder, 6-9 parts of waste kraft paper scraps, 3-5 parts of straw pulp, 2.5-3.5 parts of bamboo fiber, 0.8-1.3 parts of silane coupling agent KH560, 12-14 parts of titanium dioxide, 0.1-0.2 parts of dimethyl silicon oil, 6-8 parts of modified round grain mortar and 25-30 parts of water. The coating is reasonable in formula; the water-based polyurethane emulsion is added, so that the coating has certain elasticity and a good mechanical property, and is safe and nontoxic; the kraft paper scraps and the straw pulp are added, so that the crack resistance of the coating is improved; the modified round gain mortar is added, so that the coating has a good dispersion effect, high hardness and good wear resistance, does not increase pressure of a building, is attractive and elegant, and can meet different decoration demands; and the coating is simple in technology, easy to operate, long in service life and easy to paint.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to an exterior wall coating added with fiber components such as paper scraps and a preparation method thereof. Background technique [0002] Sand wall paint is a kind of elastic texture paint. As an exterior wall paint, it has excellent weather resistance, UV resistance, and aging resistance, making the wall last forever. The main component is round-grained sand. The round-grained sand is made by crushing and grinding natural quartz. It has high Mohs hardness, round particles without sharp corners and flaky particles, high purity without impurities, and high silicon content in the product. Spherical, good air permeability, good fluidity, high compressive strength, suitable for many purposes. For coatings, suitable particle size ratio, small stacking gaps, saving the amount of resin, and good compatibility with various resins, acid resistance, alkali resistance, chemical...

AI Technical Summary

Problems solved by technology

[0003] However, the density of round sand is high, adding it to the paint and spraying it on the outer wall will increase the weight of the building, and there is a danger of falling off the wall in the wind and sun, and it will also affect the dispersion of the paint.