Artificial colored sand and preparation method

Abstract

The invention discloses artificial colored sand and a preparation method. The artificial colored sand contains the following raw materials in percentage by weight: 2%-8% of acrylic resin, 90%-95% of quartz sand, 1%-5% of fumed silica, 0.1%-1% of a dispersing agent, 0.1%-1% of a defoaming agent, 0.1%-0.5% of a coupling agent, 0.1%-0.5% of a curing agent, 0.1%-0.5% of a pigment and the balance of asolvent. The preparation method of the artificial colored sand is simple, and the artificial colored sand can be prepared by the steps of uniformly mixing the components, and adequately solidifying. The artificial colored sand has the beneficial effects that the mechanical stability, water resistance, acid resistance, alcohol resistance and ageing resistance are excellent and are superior to the properties of natural colored sand, the colors are controllable, the aberration of different batches of the colored sand is little, the color stability is good, the production and heating temperaturesare low, the energy consumption is low, the preparation method is simple, and the production cost is low.

Description

technical field [0001] The invention relates to artificial colored sand and a preparation method thereof, belonging to the technical field of architectural coatings. Background technique [0002] Real stone paint has the advantages of convenient construction, good decorative effect, durability, low cost, safety and non-toxicity, etc. It has been favored by more and more developers and designers, and it may completely replace traditional decorative materials such as ceramic tiles and stones in the future. . Colored sand is an essential component in real stone paint. It is added in a large amount and mainly plays a decorative role. At this stage, the colored sand used by domestic real stone paint manufacturers is mainly natural colored sand, dyed colored sand, sintered colored sand The proportion of artificial colored sand is very small. However, the poor color stability between different batches of natural colored sand makes it difficult for real stone paint manufacturers t...

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Problems solved by technology

[0003] At present, the production methods of artificial colored sand can be roughly divided into the following three types: 1) Organic dye dyeing method: directly dye the granular raw materials with organic dyes. This method is simple to operate and low in cost, but organic dyes are not resistant to aging and Washed by rain, the prepared colored sand is easy to fade; 2) Resin curing method: use resin mixed with inorganic pigments to coat the surface of quartz sand, and then bake and cure at 200-300°C for coloring. The colored sand prepared by this method is prone to coloring. Uniformity, poor mechanical strength, easy agglomeration between particles, etc.; 3) High-temperature sintering method: mixing inorganic pigments and quartz sand, and sintering them at a high temperature above 1000°C. The quality of the colored sand prepared by this method is good, but the preparation process Complex, high energy consumption, high cost

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