A weather-resistant pigment composition for stone surface painting

Abstract

The invention discloses a weather-proof pigment composition for painting a stone surface and a preparation method of the weather-proof pigment composition. The weather-proof pigment composition comprises components in percentage by mass as follows: 35-45% of a modified polyurethane emulsion, 15-20% of a self-crosslinking acrylic emulsion, 15-20% of inorganic weather-proof filler, 5-10% of inorganic iron oxide pigments, 1-3% of a sterilization mildewproof agent, 0.5-1% of a rheological auxiliary, 0.5-1% of a dispersing agent, 0.5-1% of a defoaming agent, 2-3% of a coalescing agent and 5-10% of deionized water, and the sum of the mass percents of the components is 100%. The components are uniformly mixed by a high-speed dispersion machine at the revolution speed of 500-800 revolutions per minute and then filtered and subpackaged, and accordingly, the weather-proof pigment composition can be used. According to the weather-proof pigment composition, cliff stone inscriptions and tablet inscriptions which are exposed in the natural environment are painted and protected, so that special requirements of water resistance, mildew prevention, ultraviolet ray resistance, weathering resistance, long color retaining time and good weather resistance are met; and the weather-proof pigment composition can be well attached to a substrate in the constructed position, resists rain wash and doesn't erode rock, and a solidified material is safe and environment-friendly.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a weather-resistant pigment composition for stone surface painting and a preparation method thereof. Background technique [0002] Cliff stone carvings (using natural stone walls to inscribe texts and events), various inscriptions (inscribe texts and events on the surface of stone after mining and processing) and other stone carving arts are unique expressions of Chinese culture and an important part of Chinese historical and cultural heritage. Different from European and other Western inscriptions and records, China's stone engraving art has various inscription methods, including Yin engraving, Yang engraving, line engraving, and Yin-Yang combination. [0003] In order to demonstrate the artistry of engraved stone calligraphy, according to literature records and textual research, the characters of engraved stone art are all colored. The so-called "shudan" refers to the inscri...

AI Technical Summary

Problems solved by technology

Commercially available paints lead to rigid stone carvings, reduced three-dimensional effect, and limited durability

[0005] At present, pigments formulated with alkyd resin binders are commonly used, but their air permeability and mildew resistance are poor, and it is easy to cause fungi, moss Parasitic, thick and impermeable paint promotes the seepage of water vapor and salt from the unpainted edges, which leads to accelerated weathering of the unpainted edges of the inscription and aggravates the damage of the stone carvings

[0006]In view of the fact that modern commonly used paints do not have the function of protecting and displaying the artistry of cliff carvings, it is urgent to develop a special paint suitable for cliff carvings

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