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Boil-resistant polyester powder coating, and preparation method and application thereof

A technology of polyester powder and water boiling resistance, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor water resistance, and achieve the effect of improving water boiling resistance, reducing costs and improving water resistance.

Active Publication Date: 2013-06-12
NINGBO SOUTH SEA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is that the water resistance of the HAA curing agent system adopted in the polyester-HAA type polyester powder coating in the prior art is relatively poor, and then provide a kind of water resistance better boil-resistant polyester powder coating and Its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The boiling-resistant polyester powder coating described in this embodiment is obtained by dry mixing a high-acid value polyester resin particle system and a low-acid value polyester resin particle system with a ratio of parts by weight of 1:1.

[0060] The high acid value polyester resin particle system consists of the following components by weight:

[0061] High acid value polyester resin ( P2200) and the mixed curing agent system of HAA and isocyanate Degussa VESTAGON B1530 totaled 70 parts; wherein, the ratio of the parts by weight of the high acid value polyester resin to HAA in the high acid value polyester resin particle system was 92:8 , the ratio by weight of the high acid value polyester resin to isocyanate is 10:1;

[0062] Pigment A is titanium dioxide CR826 and iron red mixed in equal proportions 10 parts in total; Filler A is 20 parts of barium sulfate (Hunan Hechuang HC-801) whose surface has been treated with hydrophobicity;

[0063] 3 parts of aux...

Embodiment 2

[0075] The boiling-resistant polyester powder coating described in this embodiment is obtained by dry mixing a high-acid value polyester resin particle system and a low-acid value polyester resin particle system with a ratio of parts by weight of 1:1.

[0076] The high acid value polyester resin particle system consists of the following components by weight:

[0077] High acid value polyester resin (Crylcoat TM E04131) with HAA and biuret polyisocyanate curing agent A total of 80 parts of the mixed curing agent system; wherein, the ratio by weight of the high acid value polyester resin and HAA in the high acid value polyester resin particle system is 92:8, and the high acid value polyester resin The ratio with the weight part of isocyanate is 15:1;

[0078] Filler A is 30 parts of barium sulfate filler (B-301 produced by Shanghai Longman) whose surface has undergone hydrophobic treatment;

[0079] The auxiliary agent A is 5 parts, and the auxiliary agent A includes levelin...

Embodiment 3

[0090] The boiling-resistant polyester powder coating described in this embodiment is obtained by dry mixing a high-acid value polyester resin particle system and a low-acid value polyester resin particle system with a ratio of parts by weight of 1:1.

[0091] The high acid value polyester resin particle system consists of the following components by weight:

[0092] The mixed curing agent system of high acid value polyester resin (Sanxie B-5600) and HAA and isocyanate Degussa VESTAGON B1530 totals 60 parts; wherein, the high acid value polyester resin in the high acid value polyester resin particle system The ratio of parts by weight with HAA is 92:8, and the ratio of parts by weight of the high acid value polyester resin and isocyanate is 20:1;

[0093] Pigment A iron red for 15 copies;

[0094] Filler A is aluminum hydroxide (NABALTEC company's A40) 10 copies.

[0095] The low-acid value polyester resin particle system is made up of the following components by weight:...

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Abstract

The invention relates to a boil-resistant polyester powder coating which comprises the following components: a high-acid-value polyester resin particle system containing high-acid-value polyester resin, curing agents A and stuffing A, and a low-acid-value polyester resin particle system containing low-acid-value polyester resin, curing agents B and stuffing B. The curing agents A and the curing agents B are mutually-independent mixed curing agent systems of hydroxyalkyl acidamide (HAA) and isocyanic acid ester. The stuffing A and the stuffing B are mutually-independent aluminum hydroxides or hydrophobic stuffing. According to the boil-resistant polyester powder coating, the hydrophobic stuffing is added into the high-acid-value polyester resin particle system and the low-acid-value polyester resin particle system, so that water permeation is effectively blocked, and therefore the polyester powder coating is protected. The boil-resistant property of the boil-resistant polyester powder coating is even more than that of a polyester powder coating which is curded by means of triglycidyl isocyanurate (TGIC) curing agents.

Description

technical field [0001] The invention belongs to the field of functional powder coatings, in particular to a boiling-resistant polyester powder coating and its preparation method and application. Background technique [0002] With its advantages of economy, environmental protection, high efficiency and excellent performance, powder coatings are gradually replacing organic solvent-based coatings, becoming an important development direction in the coatings industry, and have maintained a relatively fast growth rate. Polyester powder coatings are widely used in the field of outdoor coating of buildings due to their excellent durability, decoration and formability. [0003] Polyester powder coatings can be divided into pure polyester type and mixed type according to different curing agent systems. Among them, polyester-TGIC (polyester triglycidyl isocyanurate) type pure polyester powder coating is the earliest used For powder coatings in the field of weather resistance, the curi...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D175/06C09D5/46C09D7/12
Inventor 张云伟
Owner NINGBO SOUTH SEA CHEM
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