Wind and sand resistant solar heat reflecting coating and preparation method thereof

A technology of reflective coatings and solar heat, applied in the field of coatings, can solve the problems of general weather resistance and sand resistance, no solar heat reflection, no cooling and energy saving, etc.

Inactive Publication Date: 2013-03-20

BEIJING CEEVIN NEW MATERIALS

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AI-Extracted Technical Summary

Problems solved by technology

At present, the practical anti-wind and sand coatings on the market use polyurethane, which has general weather resistance and anti...

Abstract

The invention discloses a wind and sand resistant solar heat reflecting coating which is prepared from the following components in percentage by mass: polyaspartic acid ester resin, pigment, padding, a dispersing agent, scratch resistant wax powder, a flatting agent, 0.2-0.5% of defoaming agent and butyl acetate. A preparation method comprises the following steps of: adding the polyaspartic acid ester resin, the dispersing agent and the defoaming agent into a paint can, stirring at the speed of 500r/min for 5-10 minutes, adding the pigment in the stirring process, and then, stirring at the speed of 800r/min for 15-20 minutes; adding 1/2 of butyl acetate in a formula and stirring at the speed of 500r/min for 5-10 minutes; and grinding by using a grinding machine to the fineness of 10 microns, adding the scratch resistant wax powder and the flatting agent, and then adding residual butyl acetate to adjust the viscosity. The wind and sand resistant solar heat reflecting coating not only can reflect the heat irradiated by the sun to reduce the surface temperature of a building and play the role in saving energy, but also has favorable weather resistance and wind and sand resistance so that the coating is durable and maintenance cost is low.

Application Domain

Polyurea/polyurethane coatingsReflecting/signal paints

Technology Topic

WaxChemistry +7

Examples

Experimental program(3)

Example Embodiment

[0011] Embodiment 1: This embodiment consists of the following components:

[0012] Polyaspartate resin 65

[0013] Rutile Titanium Dioxide (Pigment) 26

[0014] Dispersant 0.5

[0015] Leveling agent 0.2

[0016] Anti-scratch wax powder 1

[0017] Defoamer 0.5

[0018] Butyl acetate 6.8

[0019] When using, add 66kg curing agent, which is aliphatic polyisocyanate, and then spray, roll or brush on the surface of the coating.

[0020] Effect: Abrasion 11mg (1000g/1000 revolutions), total sunlight reflectance: 86%.

Example Embodiment

[0021] Embodiment 2: This embodiment consists of the following components:

[0022] Polyaspartate resin 50

[0023] Rutile Titanium Dioxide (Pigment) 23

[0024] Barium sulfate (filler) 18

[0025] Dispersant 0.5

[0026] Anti-scratch wax powder 1

[0027] Leveling agent 0.2

[0028] Defoamer 0.5

[0029] Butyl acetate 6.8

[0030] When using, add 60kg curing agent, which is aliphatic polyisocyanate, and then spray, roll or brush on the surface of the coating.

[0031] Effect: Abrasion 18mg (1000g/1000 revolutions), total sunlight reflectance: 81%.

Example Embodiment

[0032] Embodiment 3: This embodiment consists of the following components:

[0033] Polyaspartate resin 45

[0034] Rutile Titanium Dioxide (Pigment) 26

[0035] Calcium carbonate (filler) 20

[0036] Dispersant 0.5

[0037] Anti-scratch wax powder 1

[0038] Leveling agent 0.2

[0039] Defoamer 0.5

[0040] Butyl acetate 6.8

[0041] When using, add 50kg curing agent, which is aliphatic polyisocyanate, and then spray, roll or brush on the surface of the coating.

[0042] Effect: Abrasion 21mg (1000g/1000 revolutions), total sunlight reflectance: 82%. It is resistant to discoloration after 3000h of artificial weathering ⊿E=0.6, no chalking.

[0043] During the production of the present invention, the polyaspartate resin, dispersant, and defoamer are added to the paint tank, stirred at a speed of 500 revolutions per minute for 5-10 minutes, and the pigment is added during the stirring process, and then at 800 revolutions. Stir at a speed of 15-20 minutes; add 1/2 of the butyl acetate in the formula, stir at 500 rpm for 5-10 minutes; grind with a sand mill to a fineness of 10 microns, add anti-scratch wax Powder, leveling agent, use the remaining butyl acetate to adjust the viscosity.

PUM

Property	Measurement	Unit
Abrasion	11.0
Abrasion	18.0
Abrasion	21.0

Description & Claims & Application Information

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