JPS594196B2 - Pattern finishing method for inorganic paint - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pattern finishing method for inorganic paint.

Recent fire-related fatalities are largely due to toxic gases emitted from plastic materials. 5 This has resulted in conventional fire prevention measures using flame-retardant plastic materials having the opposite effect and causing fatal accidents due to the toxic gases emitted from the flame-retardant materials.

As a result, the general trend in the plastics industry is shifting from the conventional idea of flame retardancy to the idea of creating completely inorganic and noncombustible materials.

Accordingly, in the paint industry, there has been a rapid increase in demand for completely nonflammable inorganic paints in place of organic paints. At present, silicate-based or phosphate-based inorganic paints are in practical use, but in most cases the purpose is to obtain a smooth surface.

Furthermore, although the paint is nonflammable and exhibits extremely high hardness, it has the drawback of being less flexible and more prone to cracking than paints using organic substances as vehicles.

The present invention improves crack resistance and physical properties (water resistance, freeze-thaw resistance, chemical resistance, ,
The objective is to improve the weatherability of the material, and also to create an uneven or multi-colored pattern finish.

That is, in the present invention, after applying an inorganic paint using a specific compound as a color vehicle to an object to be coated, when the paint is in a semi-cured state, the aggregate or the aggregate and the inorganic paint are mixed together. This invention relates to a pattern finishing method for inorganic paint, which is characterized by applying a mixture of a hardening agent and then drying it naturally or by baking. The specific color vehicle used in the present invention includes potassium silicate, sodium silicate, lithium silicate, silicates such as 1:5 silicate, monobasic aluminum phosphate, monobasic phosphoric acid, etc. Phosphate-based materials such as magnesium are used. (i) As the aggregate used in the present invention, it is necessary to select one that is nonflammable and has good adhesion to paint, and is preferably lightweight and rounded.

Effective examples of these aggregates include glass beads, ceramic powder, perlite, whitebait balloons, silica sand, and kansui stone. The size of the aggregate used is about 0.1 μm to 3 mm, and various mixtures can of course be used. In particular, glass beads have a good tactility because they are spherical, and colored glass beads and colored ceramic powder are effective for finishing with multicolored patterns. In addition, pearlite or Shirasparoon itself is soft and brittle, and it has been difficult to use it as aggregate in the past, but when combined with an inorganic paint like the one of the present invention, its strength increases. It has the advantage of helping to reduce the weight of the coating film.

The above-mentioned various aggregates play the role of a filler in general,
It is possible to improve the cracking properties of conventional inorganic paints.

The inorganic paint of the present invention is generally used together with a curing agent such as zinc oxide, and therefore, the inorganic paint includes those containing a curing agent.

In addition, examples of the hardening agent to be mixed with the aggregate include zinc,
Aluminum, zirconium magnesium, calcium chlorides, oxides, hydroxides, carbonates, sulfates, nitrates, phosphates, borates, fluorides, etc. alone or in mixtures, or these compounds with kaolin, celite, etc. Examples include compounds obtained by adding extender pigments and heat-treating the mixture. The present invention also includes hardening agents that are the same as the above-mentioned hardening agents, or hardening agents that cannot be mixed with the color vehicle due to poor miscibility with the color vehicle, rapid curing, or poor storage stability. are available for use. The aggregate or the mixture of aggregate and curing agent has a ratio of 8:2 to 2:2 to the inorganic paint.
8 (weight ratio), preferably 6:4 to 4:6.

However, if there is too much aggregate, it will be difficult to form a film, and if there is too much inorganic paint, it will be difficult to obtain a patterned finish.

Further, the mixing ratio of aggregate and curing agent is preferably in the range of 9.5:0.5 to 5:5. Furthermore, the objects to be coated used in the finishing of the present invention include asbestos cement boards, calcium silicate boards,
Examples include pulp cement boards, perlite boards, fiberglass boards, gypsum boards, cement, wood, metal plates (iron plates, aluminum plates, galvanized iron plates), or those treated with an appropriate primer, such as primer treated with an inorganic paint. .

In the finishing method of the present invention, for example, the inorganic paint containing a general curing agent is applied onto the object at a rate of 50 to 500 t/m (preferably 200 to 2507/m), and the paint is brought into a semi-cured state. 5. Aggregate or a mixture of aggregate and hardening agent
0-10007/M2 (preferably 50-4007/T
After applying at the ratio of I), dry at room temperature or 150 to 25
The product is baked at 0°C, and if necessary, excess hardening agent is removed by washing with water or the like.

The product thus obtained not only improves the crack resistance of the inorganic coating film, but also has a very beautiful finish with patterns such as unevenness or multicolor.

In addition, aggregate has a very high affinity for inorganic paints, so it has good adhesion with the paint film.Especially when applying a mixture of hardener and aggregate, the hardener may be mixed around the aggregate. Because it is applied in a sprinkled state, it has the characteristic of greatly improving adhesion when applied to a paint film. The details of the present invention will be explained below with reference to Examples.

First, an inorganic paint was created with the following formulation. Said (B
) was baked at 900° C. for 8 hours and mixed with the above (A) to form a paint.

Example 1 Aggregate formulation 1 After pulverization, the inorganic paint formulation 1 was air-sprayed on a slate board at a ratio of 2007/TI, and while the paint was in a semi-hardened state, the aggregate formulation 1 was applied at a rate of 707/TI. After spraying with a mortar gun at a ratio of Trl, baking was performed at 180° C. for 30 minutes.

In this way, a slate product with a beautiful uneven surface is obtained,
Moreover, the uneven surface coating had excellent adhesion.

Example 2 Aggregate Mixture 2 The above-mentioned inorganic paint composition 2 was air-sprayed onto a slate board at a rate of 3007/Trl, and while the paint was semi-hardened, aggregate mix 2 was applied at a rate of 200y/Trl. After spraying with a mortar gun, it was baked at 180°C for 30 minutes.

Example 3 Aggregate Mixture 3 The above-mentioned inorganic paint composition 2 was air-sprayed onto a slate board at a rate of 3007/m'', and while the paint was semi-hardened, aggregate composition 3 was applied with a mortar gun at a rate of 3007/m''. After spraying at a ratio of TI, it was baked at 180° C. for 30 minutes.

Example 4 Aggregate formulation 4 Inorganic paint formulation 1 was air sprayed at a rate of 1507/m'' on a slate board, and while the paint was semi-hardened, aggregate formulation 4 was applied with a mortar gun at a rate of 1007/m''. It was sprayed at the same rate and dried at room temperature.

The uneven surface coating film prepared as described above had a multicolored patterned surface with excellent crack resistance, water resistance, weather resistance, and freeze-thaw resistance, as well as excellent adhesion not previously available. . Example 5 Aggregate composition 5 Inorganic paint composition 2 was air-sprayed on a slate board at a rate of 2507/m'', and while the paint was in a semi-hardened state, aggregate composition 5 was applied with a mortar gun at a rate of 1007/m''. The spraying was carried out at a ratio of 100.degree. C., and baking was carried out at 180.degree. C. for 30 minutes.

The uneven surface coating film created as described above had excellent crack resistance, water resistance, weather resistance, and freeze-thaw resistance, and had a multicolored patterned surface with excellent adhesion that had not been previously available. .

Example 6 Aggregate composition 6 Inorganic paint composition 2 was air-sprayed on a slate board at a rate of 1507/m, and while the paint was in a semi-hardened state, aggregate composition 6 was applied with a mortar gun to 2007/m''. A final product was obtained by spraying at a ratio of

Comparative example 1 Organic paint formulation 1 Aggregate formulation 7 A mixture consisting of organic paint formulation 1 and aggregate formulation 7 in a weight ratio of 1:1 was uniformly dispersed, sprayed onto a slate board using a mortar gun, and dried at room temperature. did.

In the uneven surface coating film prepared as described above, the adhesion between the aggregate and the paint was poor, and the coating film was also poor in water resistance, weather resistance, freeze-thaw resistance, etc. Comparative Example 2 A mixture consisting of organic paint formulation 1 and aggregate formulation 7 in a volume ratio of 1:1 was uniformly dispersed, sprayed onto a slate board using a mortar gun, and baked at 150°C for 30 minutes.

The coating film prepared as described above had poor adhesion between the aggregate and the paint, and was also poor in water resistance, weather resistance, freeze-thaw resistance, etc. Furthermore, although the texture was good considering the properties of the aggregate, it could not compensate for the softness and brittleness characteristic of aggregate blend 7, and could not withstand loads.

Claims (1)

[Claims] 1. After applying an inorganic paint using a compound selected from the group consisting of potassium silicate, sodium silicate, lithium silicate, monobasic aluminum phosphate, and monobasic magnesium phosphate to the object to be coated, A pattern finishing method for an inorganic paint, which comprises applying aggregate or a mixture of aggregate and a curing agent for the inorganic paint while the paint is in a semi-hardened state, and then drying it naturally or by baking.