JPH06157977A - Two-pack reactive type quick drying coating and method for coating the same - Google Patents

Abstract

PURPOSE:To obtain the subject coating, capable of being readily coated and remarkably improved in coating operability due to simple washing of a coater by uniformly mixing a principal agent with a curing agent at a high component mixing ratio of the principal agent to the curing agent of a two-pack reactive type coating by atomizing of the individual agents. CONSTITUTION:The objective coating is obtained by uniformly mixing (A) a principal agent composed of an acrylic resin coating containing a reactive monomer and an unsaturated polyester resin coating or a polyurethane resin coating with (B) a curing agent composed of an organic peroxide solution or an isocyanate solution, etc., by atomizing the respective components so as to provide (100:10) to (100:1) mixing ratio of the components (A) to (B). This coating is used by atomizing the component (A) having a high mixing ratio with an airless spray 1, forming a coating pattern 3, simultaneously spraying the component (B) at a low mixing ratio thereon from an oblique direction with an air spray 2 so as to mutually join the coating patterns, forming a synthetic pattern of the mixed two components in the form of 1a mist and spraying the components on a polymer to be coated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention has a high mixing ratio of the main ingredient / curing agent of the paint, and it is difficult to mix it uniformly by the usual coating method. Further, since the curing speed is fast, the mixing is carried out every time the coating is stopped. The present invention relates to an improvement in a quick-drying two-component reaction type paint which is difficult to clean a device, and a coating method thereof.

[0002]

2. Description of the Related Art Conventional coating methods for two-component reactive type coatings include a static mixer method and a collision mixing method. It is about 100/100 to 100/20. If the mixing ratio becomes higher than this, for example, 100 /
If it becomes 10 to 100/1, etc., uniform mixing is very difficult by these methods. Further, since all of the above methods are internal mixing methods, it is necessary to clean the mixer and the coating machine every time the coating is stopped, which is inefficient.

SUMMARY OF THE INVENTION The object of the present invention is to provide a two-component reactive coating composition in which the ratio of the main component / curing agent is relatively large, for example 100/10 or less (100/10 to 100/1).
This is a construction method of a coating method of the above-mentioned paint and a quick-drying coating, in which the two liquids are uniformly mixed, and it is unnecessary to wash the coating machine immediately after the construction is finished.

[0004]

In order to achieve the above object, a two-component reactive paint is an acrylic resin paint containing a reactive monomer, and a curing agent is an organic peroxide solution, an unsaturated polyester containing a reactive monomer. The hardener in the resin paint includes an organic peroxide solution, and the hardener in the polyurethane resin paint includes an isocyanate solution.

As a condition for adjusting the coating material, the main ingredient must be suitable for airless spraying, that is, the viscosity of the coating material is 70 to 1
20KU / 25 ℃, particle size of pigment and filler in paint is 50μ
m or less is desirable. The same applies to the curing agent, but particularly when air spray is used, the viscosity of the coating is preferably low in order to uniformly atomize, and 10 poise or less is desirable. The ratio of the main agent to the curing agent may be 100/10 to 100/1, and, of course, may be outside this range.

[0006]

[Action]

Construction machine and construction method The main agent A is sprayed with the airless spray gun 1 by a normal method, and the curing agent B is blown into the spray pattern 3 of the main agent with the airless spray gun 11 or the air spray gun 2. The main agent A and the curing agent B are mixed. 1) FIG. 1 shows a method in which both the main agent A and the curing agent B are airless sprayed by the airless spray guns 1 and 11 and mixed and coated. In the figure, 4 is a road surface, and 5 is a road marking line applied to the road surface 4 by the mixed coating. 2) FIG. 2 shows a method in which the main agent A is sprayed by the airless spray gun 1 and the curing agent B is pressure-fed by the compressed air by the air spray gun 2 to be air-sprayed into the spray pattern 3 of the main agent A to perform mixed coating. Shows. 4 in the figure is the road surface,
Reference numeral 5 is a coating line for the road marking thus constructed. When the ratio of the curing agent is very low, it is difficult to eject a minute amount of the curing agent by airless spraying, and the method 1) is not suitable. The method 2) is advantageous.

[0007]

Examples Example-1 (Paint coating for two-pack type road marking) Paint preparation Base liquid A * Acrylic prepolymer 50 ** Plasticizer 8 Titanium dioxide 15 Calcium carbonate 27 Total 100 (wt%) Hardener B liquid Benzoyl peroxide 25 *** Diluent 75 Total 100 (% by weight) Mixing ratio A / B = 100/4 * Example: Mitsubishi Rayon Co., Ltd. Acrysirup DR-450 ** Example: Dibutyl phthalate *** Example: Same as above

[0008] In the manufacture of paint, the main ingredient A is completely mixed and SGI
(Sandmill) dispersed, and curing agent B is uniformly mixed and dispersed according to the handling method of peroxide. Main agent A: viscosity 80 ku / 25 ° C., specific gravity 1.4 Curing agent B: viscosity 60 cps / 25 ° C., specific gravity 1.1

These are filled in respective tanks of a dedicated marker car for painting road surface paint equipped with an airless spray coating device, a pressure feeding device, an air spray device, and a glass bead spraying device 6, and the coating amount is applied. Adjust by the pressure and the diameter of the spray nozzle, spray the main agent with the airless spray gun 1 as shown in FIG. 3, and blow the curing agent into the mist of the main agent with the air spray gun 2 to make both uniform. Was mixed and applied, and a coating line 5 was constructed. Further, the glass beads 7 were sprayed on the coating film under pressure to complete the road marking line 5.

Coating device-Main agent A Airless pump: Nippon Gray Co., Ltd. Bulldog type spray gun: Company's 206T-660 Spray tip: Company's G-527 Spray pressure: 100-110 kg / cm ² Curing agent B Spray gun: Iwata coating SA-71 automatic gun manufactured by Kiki Co., Ltd. 〃 Nozzle caliber: 0.8mm Spray pressure: 0.8-1.2 kg / cm ^{2 The} coated film is cured and dried in 5-7 minutes (20 ℃),
It was judged to be sufficiently practical as a road marking paint. FIG. 4 is a schematic view of a coating apparatus in which an airless spray gun 1 for spraying a main agent A and a curing agent B and an air spray gun 2 for spraying a curing agent are combined and cured in a mist of the sprayed main agent. The agent is uniformly mixed by being sprayed, and is spray-coated on the object to be coated as a mist in which the two components are mixed.

[0011]

The present invention has the above-mentioned constitution, and the component ratio of the main agent: the curing agent of the two-component reactive coating is 100:
Increase the component mixing ratio from 10 or less to 100: 1 and airlessly spray a large amount of components to form a paint pattern,
A small amount of paint was sprayed with airless or air spray from an oblique direction so that the patterns merge, and it was sprayed as a mist of the two components onto the object to be coated. Can be easily coated, the coating machine can be easily washed, and the coating work of the quick-curing paint can be significantly improved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an example of a coating method of a two-component reactive paint according to the present invention.

FIG. 2 is an explanatory view of a coating method showing another embodiment.

FIG. 3 is an explanatory view showing an example of a combination of the coating method according to the present invention and attachment of glass beads.

FIG. 4 is a schematic view showing an example of a combination of two types of spray guns for respectively spraying two liquids of a two-liquid reactive paint.

[Explanation of symbols]

 A Main agent B Curing agent 1 Airless spray gun 2 Air spray gun 3 Main agent spray pattern 4 Road surface 5 Coating line 6 Glass bead spraying device 7 Glass beads 11 Airless spray gun

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location B05D 7/24 P 8720-4D C09D 167/06 PEB 8933-4J 175/04 PHP 8620-4J

Claims (2)

[Claims] 1. A two-component reactive coating material, which is a main component consisting of an acrylic resin coating material containing a reactive monomer, an unsaturated polyester resin coating material, or a polyurethane resin coating material, and a curing agent composed of an organic peroxide solution or an isocyanate solution. Is a mixing ratio of 100: 10 to 100: 1, and the two-component reactive quick-drying paint is obtained by uniformly mixing the two liquids by atomization. 2. In the coating of a two-component reactive paint having a large mixture ratio, the paint components having a large mixture ratio are atomized by an airless spray to form a paint pattern, and the paint components having a small mixture ratio are airless or air-coated. A two-component reactive coating method in which spray paint is sprayed from an oblique direction so that the two paint patterns join together and sprayed onto the object to be coated as a synthetic pattern in which the two components are mixed in a mist.