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A self-cleaning super weather-resistant powder coating and its preparation method

A powder coating, super weather-resistant technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of complex fluorocarbon resin treatment process, poor adhesion of substrate materials, etc., to shorten the pretreatment process, protect and anti-aging , Not easy to crack and peel off

Active Publication Date: 2016-03-30
NINGBO SOUTH SEA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the problem of complex pretreatment process of fluorocarbon resin with nano-titanium dioxide and poor adhesion to substrate materials, and provides a powder coating with outstanding self-cleaning performance, super weather resistance, excellent coating mechanical properties and low cost and its preparation method

Method used

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  • A self-cleaning super weather-resistant powder coating and its preparation method
  • A self-cleaning super weather-resistant powder coating and its preparation method
  • A self-cleaning super weather-resistant powder coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The self-cleaning super-weather-resistant powder coating described in this example is obtained by dry mixing a carboxyl-terminated polyester particle system and a fluorocarbon resin particle system at a weight-to-number ratio of 1:1.

[0059] The carboxyl-terminated polyester particle system includes the following components by weight:

[0060] Carboxyl-terminated polyester and its suitable curing agent A60 parts; among them, the carboxyl-terminated polyester is UralacP2400, 55.8 parts, and the corresponding curing agent is triglycidyl isocyanurate TGIC (purchased from Ningbo Nanhai Chemical Co., Ltd.), 4.2 share;

[0061] 39.9 parts of pigments and fillers;

[0062] Among them, carbon black pigment FW200 is 0.8 parts, barium sulfate W-44HB is 38.9 parts;

[0063] Auxiliary A is 0.1 part;

[0064] Auxiliary A is a flow aid AluC.

[0065] The fluorocarbon resin particle system consists of the following components by weight:

[0066] Fluorocarbon resin and its matc...

Embodiment 2

[0078] The self-cleaning super-weather-resistant powder coating described in this example is obtained by dry mixing a carboxyl-terminated polyester particle system and a fluorocarbon resin particle system at a weight-to-number ratio of 1:1.

[0079] The carboxyl-terminated polyester particle system includes the following components by weight:

[0080] Carboxyl-terminated polyester and its suitable curing agent A63 parts; wherein the selected carboxyl-terminated polyester is UralacP780, 60 parts, and the carboxyl-terminated polyester curing agent is hydroxyalkylamide XL552, for 3 servings.

[0081] 36.7 parts of pigments and fillers, including 26 parts of titanium dioxide CR826 and 10.7 parts of barium sulfate W-44HB;

[0082] Auxiliary A is 0.3 part;

[0083] Auxiliary A is a flow aid AluC, 0.3 phr.

[0084] The fluorocarbon resin particle system consists of the following components by weight:

[0085] Fluorocarbon resin and its matching curing agent B50.7 parts;

[00...

Embodiment 3

[0097] The self-cleaning super-weather-resistant powder coating described in this example is obtained by dry mixing a carboxyl-terminated polyester particle system and a fluorocarbon resin particle system at a ratio of parts by weight of 4:1.

[0098] The carboxyl-terminated polyester particle system includes the following components by weight:

[0099] Carboxyl-terminated polyester and its suitable curing agent A40 parts, wherein the selected carboxyl-terminated polyester is Crylcoat TM E04131, 36 parts, the corresponding curing agent is triglycidyl isocyanurate TGIC (purchased from Ningbo Nanhai Chemical Co., Ltd.), 4 parts.

[0100] 50 parts of pigments and fillers, iron red For 36 parts, aluminum hydroxide such as for 14 copies;

[0101] Additive A is 10 parts, wherein, corner coverage modifier parts, curing accelerator BASF2-MI2 parts, wetting and dispersing agent share.

[0102] The fluorocarbon resin particle system consists of the following components by weig...

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Abstract

The invention belongs to the field of powder paints and particularly relates to a self-cleaning super-weather-proof powder paint. The self-cleaning super-weather-proof powder paint comprises a carboxyl-terminated polyester particle system and a fluorocarbon resin particle system in a weight part ratio of 4:1-1:4, wherein the fluorocarbon resin particle system contains TiO2 nano-particles. As carboxyl-terminated polyester is introduced into a pure fluorocarbon paint, the phase separation occurs in a solidification process, and the fluorocarbon resin floats up to the surface of a coating to serve as coating protection and ageing resistance; the carboxyl-terminated polyester and the like and a substrate can be well wetted, so that the coating and the substrate can be well adhered and can hardly crack and spall; as the TiO2 nano-particles only exist in a fluorocarbon phase, the resin on a bottom layer cannot be broken, and the excellent stability of the system is guaranteed; and the TiO2 nano-particles are scattered in a dry blending manner, and the complex preprocessing is avoided, so that the preprocessing process can be greatly shortened, the cost is lowered, and the efficiency is improved.

Description

technical field [0001] The invention relates to a self-cleaning super weather-resistant powder coating and a preparation method thereof, belonging to the field of new chemical materials. Background technique [0002] Powder coating is a new type of powder coating material that does not contain liquid solvents and thinners. It has the advantages of high efficiency, energy saving, and no three-waste pollution. It is being widely used all over the world, and its usage is at an average rate of 10% per year. increase. How to make the surface of weather-resistant architectural coatings self-cleaning through material modification has become a hot topic in domestic and foreign enterprises, universities and research institutes this year. Fluorocarbon coatings are sought after due to their super weather resistance. The foreign fluorine coatings market started in the 1940s, while my country's fluorine coatings market did not start to get on the right track until the end of the 1990s, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D127/12C09D7/12C09D5/03
Inventor 张云伟
Owner NINGBO SOUTH SEA CHEM
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