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Crackle paint and preparation method thereof

The technology of crack paint and crack agent is applied in the field of acrylic crack paint and its preparation.

Inactive Publication Date: 2011-04-27
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The comprehensive performance of the thermosetting acrylic resin used is better than that of nitro resin, but since the thermosetting acrylic resin needs to be used with polyisocyanate curing agent, the problem of the amount of polyisocyanate added needs to be considered and the use time is limited by the gel time. Moreover, the cost of using matte powder as a cracking agent is relatively high, and the paint layer will have a slight powder drop phenomenon

Method used

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  • Crackle paint and preparation method thereof

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preparation example Construction

[0021] The present invention also provides a preparation method of the above-mentioned cracked paint, which comprises adding thermoplastic acrylic resin, cracking agent and solvent into a container, mixing and stirring to obtain the cracked paint.

[0022] The specific preparation method is as follows,

[0023] 1) Weigh the thermoplastic acrylic resin according to the formula, add 1.5 times the solvent of the thermoplastic acrylic resin into the stirring container, add the weighed thermoplastic acrylic resin while stirring, and rotate at a speed of 10M / S until the solid resin is completely dissolved.

[0024] 2) Add the dissolved thermoplastic acrylic resin, wetting and dispersing agent and leveling agent according to the proportion of the formula, stir evenly, add ultra-fine mica and pigment, disperse and grind until the specified fineness is reached, add a small amount of solvent, adjust the viscosity, and filter .

[0025] 3) Weigh cellulose acetate butyrate according to t...

Embodiment 1

[0030] Preparation of crack paint primer: Weigh 80g of thermoplastic acrylic resin MB-2952, add 120g of solvent butyl acetate into the grinding tank, add the weighed MB-2952 while stirring, and rotate at 10M / S until the solid resin is completely dissolved. Then add 2.5g of pigment carbon black+50g of rutile titanium dioxide, 2.5g of wetting and dispersing agent (BYK-163), 4g of leveling agent (Afcona3670), 25g of ethyl 3-ethoxypropionate, mix well, and grind until The fineness reaches 25 microns, and the semi-finished product is obtained by filtering. Weigh 25g each of cellulose acetate butyrate CAB-381-0.5 and CAB-381-2, add 200g butyl acetate into the stirring container, add the weighed cellulose acetate butyrate while stirring, the speed is 10M / S, Until the cellulose acetate butyrate is completely dissolved. Add the dissolved cellulose acetate butyrate to the ground semi-finished product, add solvent butyl acetate and dilute the composition to 20s (Iwata 2# cup, 23° C.) to...

Embodiment 2

[0035] Same as Example 1, the difference is that the mica powder used is 2250 mesh mica powder.

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Abstract

The invention provides a crackle paint, comprising thermoplastic acrylic resin, crack agent and solvent, wherein the temperature of Tg (triglyceride) of the thermoplastic acrylic resin is 70-80 DEG C, and the crack agent is mica powder with the average particle size of 2000-3000 meshes. The invention also provides a preparation method of the crackle paint, comprising the steps of adding the thermoplastic acrylic resin, crack agent and solvent into a container, mixing and stirring. The invention has the advantages of simple steps when using the crackle paint provided by the invention and smallpossibility of picking of the crackle paint layer after being sprayed.

Description

technical field [0001] The invention relates to an acrylic crack paint and a preparation method thereof. Background technique [0002] Crackle paint can produce uniform and natural cracks, and this feature is gradually being used by people to decorate the surface of objects, showing a classic and nostalgic aesthetic feeling. The mechanism of cracked paint is to use the change of the viscosity, surface tension and curing speed of the paint to cause the shrinkage of the coating film surface and cause the crack effect. Usually, the method of forming cracks can increase the amount of filler, or reduce the amount of base material. Add a cracking agent such as matte powder fumed silica to promote the shrinkage of the coating film and form a uniform cracking effect. And reveal the color of the primer at the cracks. [0003] At present, nitrocellulose is usually used as the main resin of the cracked paint, and nitrocellulose can accelerate the volatilization of the solvent, and ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/02C09D5/28
Inventor 时鸣海
Owner BYD CO LTD
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