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A kind of modified acrylic polyurethane zinc-rich paint and preparation method thereof

An acrylic polyurethane, zinc-rich technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as reducing anti-corrosion ability, and achieve the effects of increasing mechanical properties, convenient use and simple formula

Active Publication Date: 2020-03-13
山东伟龙新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a modified acrylic polyurethane zinc-rich paint and a preparation method thereof, aiming at the problem that the corrosion resistance of zinc powder in the polyurethane zinc-rich paint is reduced after corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A modified acrylic polyurethane zinc-rich coating is composed of the following components by weight: 70 parts of a mixture of diphenylmethane diisocyanate and toluene diisocyanate, 10 parts of glycerol, 30 parts of acrylic acid, 5 parts of sodium polyacrylate, 300 parts of parts of hexamethylene adipamide granules, 350 parts of zinc powder and 20 parts of zinc chloride.

[0016] Wherein, the material ratio of diphenylmethane diisocyanate and toluene diisocyanate is 0.95:1.

Embodiment 2

[0018] A modified acrylic polyurethane zinc-rich coating is composed of the following components by weight: 85 parts of a mixture of diphenylmethane diisocyanate and toluene diisocyanate, 13 parts of glycerol, 40 parts of acrylic acid, 8 parts of sodium polyacrylate, 400 parts of parts polycaprolactam granules, 425 parts zinc powder and 30 parts zinc chloride.

[0019] Wherein, the material ratio of diphenylmethane diisocyanate and toluene diisocyanate is 1:1.

Embodiment 3

[0021] A modified acrylic polyurethane zinc-rich coating is composed of the following components by weight: 100 parts of a mixture of diphenylmethane diisocyanate and toluene diisocyanate, 15 parts of glycerol, 50 parts of acrylic acid, 10 parts of sodium polyacrylate, 500 parts of parts polycaprolactam granules, 500 parts zinc powder and 40 parts zinc chloride.

[0022] Wherein, the material ratio of diphenylmethane diisocyanate and toluene diisocyanate is 1.05:1.

[0023] The preparation method of the modified acrylic polyurethane zinc-rich coating of the above embodiment, comprises the following steps:

[0024] 1) Preparation of zinc powder-zinc chloride polyamide crude fiber: weigh polyamide particles, zinc powder and zinc chloride in parts by weight, after mixing uniformly, add in a screw extruder and carry out melt spinning to prepare zinc powder-chlorine Zinc polyamide crude fiber, the prepared crude fiber is cut into short fibers of 3-5mm;

[0025] 2) Preparation of ...

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PUM

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Abstract

The invention discloses a modified acrylic polyurethane zinc-rich coating and a preparation method thereof. The coating is prepared from 70-100 parts of a polyurethane prepolymer, 10-15 parts of glycerin, 30-50 parts of acrylic acid, 5-10 parts of sodium polyacrylate, 300-500 parts of polyamide particles, 350-500 parts of zinc powder and 20-40 parts of zinc chloride. The coating has the benefits as follows: the formula is simple and convenient to use, during preparation, the zinc powder, zinc chloride and polyamide are mixed, zinc powder-zinc chloride polyamide crude fiber is prepared, macromolecular grids of the polyamide can fix the zinc powder and zinc chloride in polyamide, zinc chloride can improve conductivity among zinc powder, the zinc powder in polyamide still has an anti-corrosion function after coating, the structure of polyamide crude fiber cannot change with consumption of the zinc powder, therefore, reduction of adhesion of the whole coating structure due to larger defects like common zinc-rich coatings can be avoided, and besides, the mechanical performance of the coating can be improved because polyamide can form hydrogen bonds with polyurethane and acrylic acid.

Description

technical field [0001] The invention relates to the field of anti-corrosion coatings, in particular to a modified acrylic polyurethane zinc-rich coating and a preparation method thereof. Background technique [0002] Polyurethane material is a polymer material, known as "the fifth largest plastic". Polyurethane material has excellent properties such as high mechanical strength, good wear resistance, strong adhesion, good elasticity, weather resistance, oil resistance, aging resistance, etc. For coatings, adhesives, sealants, elastomers, foam, etc. Among them, an important application of polyurethane is coatings. Polyurethane coatings have good mechanical properties and high solid content, and can maintain good performance when other functional additives are added. Polyurethane zinc-rich coating, zinc powder accounts for more than 70% of the dry film mass, is an excellent anti-corrosion coating, widely used in the field of surface anti-corrosion of iron products. The anti-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02C09D4/06C09D5/10C09D7/61
Inventor 邹亚静
Owner 山东伟龙新材料有限责任公司