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.
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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%
[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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