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Washing-resistant, doodling-resistant powder paint with surface capable of repeatedly erasing, and producing method thereof

A technology of powder coating and anti-graffiti, which is applied in the direction of powder coating and coating, and can solve the problems of short service life, loss of function of whiteboard, leaving traces, etc.

Inactive Publication Date: 2008-07-16
GUANGZHOU QINGTIAN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional teaching writing method of blackboard chalk has serious dust pollution, and the emergence of whiteboards and whiteboard markers has completely solved this problem. However, the service life of the whiteboards currently on the market is very short. Although the handwriting can be erased, it will leave traces. The whiteboard will lose its function after a long time, so it is necessary to develop a new type of durable anti-graffiti coating, so that there will be no traces left after writing and erasing with the whiteboard pen, and the coating will not be damaged when cleaning with solvent after spraying paint or oil-based pen.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A washing-resistant, anti-graffiti, and rewritable powder coating on the surface, its components and weight content are:

[0025] 1. Hydroxyl resin with a hydroxyl value of 48 (mg KOH / g) 40%

[0026] 2. Blocked isocyanate curing agent (NCO content 12-15%) 40%

[0027] 3. Barium sulfate 15%

[0028] 4. Ether leveling agent 1.0%

[0029] 5. Benzoin 0.5%

[0030] 6. Charge enhancer 0.8%

[0031] 7. Breathing agent 1.0%

[0032] 8. Wax powder 1.0%

[0033] 9. Pigment 0.7%

[0034] The production method of the above-mentioned washing-resistant, anti-graffiti, and rewritable powder coating on the surface comprises the following steps:

[0035] (1) All materials are weighed according to the proportion, placed in the mixing tank, mixed and crushed for 2 minutes;

[0036] (2) The material enters the twin-screw extruder, and the temperature of the extruder is controlled at 100°C to extrude;

[0037] (3) After extrusion, the material is crushed to 40 micron powder particl...

Embodiment 2

[0040] A washing-resistant, anti-graffiti, and rewritable powder coating on the surface, its components and weight content are:

[0041] 1. Hydroxyl resin with a hydroxyl value of 100 (mg KOH / g) 50%

[0042] 2. Blocked isocyanate curing agent (NCO content 12-15%) 22%

[0043] 3. Titanium dioxide 20%

[0044] 4. Ether leveling agent 2.0%

[0045] 5. Benzoin 1.0%

[0046] 6. Booster 0.5%

[0047] 7. Breathing agent 2.0%

[0048] 8. Wax powder 1.5%

[0049] 9. Pigment 1.0%

[0050] The production method of the above-mentioned washing-resistant, anti-graffiti, and rewritable powder coating on the surface comprises the following steps:

[0051] (1) All materials are weighed according to the proportion, placed in the mixing tank, mixed and crushed for 3 minutes;

[0052] (2) The material enters the twin-screw extruder, and the temperature of the extruder is controlled at 110°C to extrude;

[0053] (3) After extrusion, the material is crushed to 50 micron powder particles; ...

Embodiment 3

[0056] A washing-resistant, anti-graffiti, and rewritable powder coating on the surface, its components and weight content are:

[0057] 1. Hydroxyl resin with a hydroxyl value of 300 (mg KOH / g) 55%

[0058] 2. Blocked isocyanate curing agent (NCO content 15-20%) 20%

[0059] 3. Calcium carbonate 20%

[0060] 4. Ether leveling agent 1.5%

[0061] 5. Benzoin 0.5%

[0062] 6. Booster 0.5%

[0063] 7. Breathing agent 1.0%

[0064] 8. Wax powder 1.0%

[0065] 9. Pigment 0.5%

[0066] The production method of the above-mentioned washing-resistant, anti-graffiti, and rewritable powder coating on the surface comprises the following steps:

[0067] (1) All materials are weighed according to the proportion, placed in the mixing tank, mixed and crushed for 2 minutes;

[0068] (2) The material enters the single-screw extruder, and the temperature of the extruder is controlled at 100°C to extrude;

[0069] (3) After extrusion, the material is crushed to 60 micron powder particles; ...

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PUM

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Abstract

The invention discloses a powder coating which is washing-durable, anti-doodle and can be erased and written repeatedly on the surface. The components of the invention contains hydroxy resin with the hydroxyl value being 40 to 350 (mg KOH / g), isocyanate curing agent with the mass content of isocyanic acid radical being from 10 percent to 20 percent, inorganic filler, pigment, benzoin, an ether flatting agent, an electric power increasing agent, a ventilated agent and wax powders, etc. the invention also discloses a production method of the powder coating. The powder coating which is washing-durable, anti-doodle and can be erased and written repeatedly on the surface of the invention has very good chemical resistance and the doodle on the surface can be erased rapidly. The ordinary doodle liquid and paint can be erased easily or removed with menstruum and have no affect to the coating surface. The invention is suitable for indoors and outdoors, and can be used for the coating of white board, public facilities such as traffic indication boards, bus stop boards, newspaper boxes and public furnitures.

Description

technical field [0001] The present invention relates to a kind of powder paint, and the present invention also relates to a kind of production method of powder paint simultaneously. Background technique [0002] The traditional teaching writing method of blackboard chalk has serious dust pollution, and the emergence of whiteboards and whiteboard markers has completely solved this problem. However, the service life of the whiteboards currently on the market is very short. Although the handwriting can be erased, it will leave traces. The whiteboard will lose its function after a long time, so it is necessary to develop a new durable anti-graffiti coating, so that there will be no traces left after writing and erasing with whiteboard pens, and the coating will not be damaged when cleaning with solvents after spraying paint or oil-based pens. The powder coating has the characteristics of "saving resources, saving energy, low pollution, and high efficiency"; the construction proc...

Claims

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Application Information

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IPC IPC(8): C09D201/06C09D5/03C09D5/00
Inventor 高庆福杨璠潘帅军甘灯河章晓斌
Owner GUANGZHOU QINGTIAN INDAL
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