Special antifouling powder paint for surface layer self peeling type building aluminum plate and preparation method thereof

A powder coating, self-peeling technology, used in powder coatings, antifouling/underwater coatings, coatings, etc., can solve problems such as difficulty in reaching more than 30 cycles and reduced fouling resistance

Active Publication Date: 2018-07-27
JIANGSU JIALV IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing method of using the surface enrichment of silicon and fluorine atoms to improve the stain resistance of the coating, after 2 to 3 cycles of the above, its stain resistance will be greatly reduced with the wear of the coating surface, which is difficult to achieve More than 30 cycles required for construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] a, the preparation of alkali-soluble resin:

[0044] 1) Add maleic anhydride to a three-necked flask, add 50% solvent dipropylene glycol dimethyl ether solvent, install a condensing reflux tube, raise the temperature to 85-125°C under the protection of nitrogen, heat and stir to dissolve;

[0045] 2) Dissolve the weighed hydrophobic hardening monomer, acrylate monomer and initiator in the remaining 50% of the solvent, stir evenly, pour it into a constant pressure return-type dropping funnel, and slowly add it to In the three-necked flask, the dropping time is about 1 to 1.5 hours, keep the temperature constant, and after the dropping is completed, add an initiator of 1% of the monomer mass;

[0046] 3) Continue the reflux reaction for 2 to 4 hours, add 2 times the solvent amount of acetone to dissolve, then add 2 times the solvent amount of toluene to precipitate, filter, wash with toluene again, and vacuum dry to obtain the required alkali-soluble resin; The softening...

Embodiment 1

[0063] The special antifouling powder coating for surface self-stripping architectural aluminum formwork is made of the following components by mass percentage:

[0064] Modified matrix resin 48%;

[0065] Functional filler 48%;

[0066] Adhesion promoter 1%;

[0067] Charge regulator 1%;

[0068] Leveling agent 0.5%;

[0069] Benzoin 0.5%;

[0070] Pigment 1%.

[0071] The preparation method of the special antifouling powder coating for the surface layer self-peeling type architectural aluminum formwork, the modified matrix resin is made by the following scheme:

[0072] a, the preparation of alkali-soluble resin:

[0073] 1) Add maleic anhydride to a three-necked flask, add 50% solvent dipropylene glycol dimethyl ether solvent, install a condensing reflux tube, raise the temperature to 85°C under the protection of nitrogen, heat and stir to dissolve;

[0074] 2) Dissolve the weighed hydrophobic hardening monomer, acrylate monomer and initiator in the remaining 50% of ...

Embodiment 2

[0089] The special antifouling powder coating for surface self-stripping architectural aluminum formwork is made of the following components by mass percentage:

[0090] Modified matrix resin 50%;

[0091] Functional filler 44%;

[0092] Adhesion promoter 1.5%;

[0093] Charge regulator 1.5%;

[0094] Leveling agent 1%;

[0095] Benzoin 0.6%;

[0096] Pigment 1.4%.

[0097] The preparation method of the special antifouling powder coating for the surface layer self-peeling type architectural aluminum formwork, the modified matrix resin is made by the following scheme:

[0098] a, the preparation of alkali-soluble resin:

[0099] 1) Add maleic anhydride to a three-necked flask, add 50% solvent dipropylene glycol dimethyl ether solvent, install a condensing reflux tube, raise the temperature to 90°C under the protection of nitrogen, heat and stir to dissolve;

[0100] 2) Dissolve the weighed hydrophobic hardening monomer, acrylate monomer and initiator in the remaining 50%...

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Abstract

The invention provides special antifouling powder paint for a surface layer self peeling type building aluminum plate. The paint is prepared from the following ingredients in percentage by weight: 30to 60 percent of modified substrate resin, 30 to 60 percent of functional filling materials, 1 to 3 percent of adhesion force promoters, 1 to 3 percent of charger regulating agents, 0.5 to 1.5 percentof leveling agents, 0.3 to 0.8 percent of benzoin and 0.8 to 3 percent of pigments. The powder paint is prepared by the following scheme with the steps of (1) preparing alkali-soluble resin; (2) preparing modified substrate resin; (3) after the materials are weighed according to the formula, performing uniform crushing by a high-speed stirring machine; performing fusion extrusion; (4) performingair cooling, crushing and sieving on extruded sheet materials to obtain powder paint. The cement slurry corrodes a coating at a certain thickness in a controllable way; in the cement hardening demolding process, the corroded part falls together with the cement; a new coating is exposed; the problem of no antifouling function of the special antifouling powder paint for a building aluminum plate issolved, so that the use cycle times of the coating is greatly improved; the advantages of low construction difficulty, process simplicity and the like are realized.

Description

technical field [0001] The invention belongs to the field of powder coatings, in particular to a special antifouling powder coating for surface self-peeling type architectural aluminum templates and a preparation method thereof. Background technique [0002] Powder coating is a clean and efficient coating, and its product utilization rate is almost 100%, without VOC air pollution and other issues. In recent years, it has been widely used in decoration and metal protection, and it is an advanced direction for the development of coatings. [0003] The self-cleaning of the coating surface has always been a key research direction of functional coatings. Now the mainstream method is to add additives containing silicon and fluorine atoms to the coating. After the time required for the coating to dry and cure, the coating resin and silicon , The surface tension of fluorine atoms and the difference in solubility parameters promote the migration of these low surface energy materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D5/16C09D5/03C09D7/61C08F212/08C08F220/18C08F222/06
CPCC08F212/08C08K3/34C08K2003/2227C08K2003/2296C08K2003/3045C09D5/03C09D5/1662C09D5/1687C09D125/14C08F220/18C08F222/06
Inventor 陆永唐继勇张庆华钱跃荣
Owner JIANGSU JIALV IND
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