Artificial colour sand and preparation method thereof

Abstract

The invention discloses artificial colour sand and belongs to the field of building coating. The artificial colour sand comprises stone sand and base slurry, wherein stone sand comprises at least one of silica sand, basalt and calcite, the grain size of the stone sand is 30-120 meshes, the base slurry is prepared from the following raw materials in parts by weight: 40-50 parts of fluorocarbon resin, 25-35 parts of base solvent, 0.5-0.9 part of dispersing agent, 0.1-0.3 part of wetting agent, 10-20 parts of colour powder, 18.8-20 parts of cosolvent, 0.1-0.5 part of accelerant, 5-10 parts of coupling agent and 0.5-0.8 part of thickening agent, and the weight ratio of stone sand to base slurry in the artificial colour sand is 19:1. The invention also provides a preparation method of the artificial colour sand. The artificial colour sand is uniform in colour, good in weather resistance, economical and environment-friendly, the problem that natural colour sand is scare is solved, and requirements of building decoration are met.

Description

technical field [0001] The invention relates to colored sand, in particular to artificial colored sand and a preparation method thereof, belonging to the field of architectural coatings. Background technique [0002] As a surface decoration material, colored sand is generally divided into two types: natural colored sand and artificial colored sand. Natural colored sand is obtained by directly crushing colored ores in nature, but most of them are chaotic in color, poor in strength, and easy to differentiate. Those natural colored sands with bright colors are small in quantity, expensive and have great limitations. Artificial colored sands are obtained by wrapping mineral particles with colored coatings on the surface. By changing the pigments, a variety of colored sands can be prepared. Meet the different needs of people. Colored sand is often used in architectural coatings. Sand wall-like coatings have dual functions of protection and decoration. Nowadays, it is not only us...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kinds of processes for the production of artificial colored sand, and the most important manufacturing methods are: the first is the dyeing method of organic dyes, organic dyes are not resistant to aging or rain washing, and are easy to fade; the second is the resin curing method , use resin mixed with inorganic pigments to coat the surface of quartz sand, and then bake and solidify the color at a temperature of 200 degrees Celsius to 300 degrees Celsius. The colored sand prepared by this method has the problems of easy aging, easy fading and uneven coloring. The need to heat increases the preparation cost of colored sand; the third is the high-temperature sintering method, which mixes inorganic pigments with quartz sand and sinters them into one body at high temperature, but there are problems in the preparation process and high energy consumption.

[0004] The invention patent with the application number of 200410061411.8 provides a kind of colored sand and its preparation method. By crushing, sieving, washing and drying the base material, it is prepared into particles with a certain particle size distribution, and then water, milk Mix turbid frit, inorganic pigment, bentonite, Suzhou soil and inorganic binder, ball mill, and prepare color paste for packaging, then add organic dispersant and mix evenly with color paste, and perform color layer on mineral particles with a certain gradation Wrap, and finally dry the particles wrapped in color paste, put them into an externally heated rotary kiln for calcination, the combustion temperature is 500 degrees Celsius to 950 degrees Celsius, and the holding time is 0.5 to 1 hour. Although this kind of colored sand has good weather resistance and bright color , but the production process is complicated, and there are many kinds of raw materials, the cost of raw materials is high, and the economic benefit is low. Meet the needs of production