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Powder material, preparation method thereof and powder coating

A technology of powder materials and composite fillers, applied in powder coatings, polyester coatings, chemical instruments and methods, etc., can solve problems such as haze, high cost, and scratches on the coating surface

Inactive Publication Date: 2020-07-07
SUZHOU GINET NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The high-gloss system of home appliances, furniture, profiles and other items, due to long-term contact and friction, the surface of the coating will be scratched, which will affect the appearance and usability
High-gloss high-hardness powder coatings require a hardness of 3-4H, a gloss (60°) of ≥90 degrees, and a leveling (PCI)>4; generally speaking, the only way to improve surface adhesion is to replace the resin system and cross-link the system. The surface hardness can be improved by means of force, which will result in high cost, easy pollution of other systems, and poor physical properties; or, as disclosed in the prior art of CN107011774A, comprehensively improve the hardness (such as crosslinking density, increase Hard filler, wax powder, etc.), the hardness can reach 3-4H, but the gloss of this method cannot reach 90 degrees of high gloss, and the pure black or dark system will have haze and fingerprints
In summary, the existing technology has the disadvantages of high cost and low gloss (80-85°) and cannot meet customer requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a powder material, including an inorganic filler and a silane modifier, and the inorganic filler is composed of a composite filler and a rod-shaped filler according to a mass ratio of 4:6 or 5:5 or 6:4 or 7:3. The composite filler has an average particle diameter of 2-4 microns, and the rod-shaped filler has an aspect ratio of 1-2:1. Wherein, the average particle size of the composite filler is 3-4 microns, and the maximum particle size of the composite filler is less than 8 microns.

[0035] In this embodiment, the powder material is composed of an inorganic filler and a silane modifier, wherein the mass fraction of the silane modifier is 0.2-1%. The silane modifier is selected from one or more of the first silane and the second silane, the first silane is selected from one or more of epoxy silane, amino silane or vinyl silane, and the second The silane is selected from one or more of fluorosilane, isocyanatosilane and alkylsilane. In this em...

Embodiment 2

[0043] The difference from Example 1 is that the aspect ratio of the rod-shaped filler in this example is ≤1.5. Since when the aspect ratio is greater than 1.5, pitting will occur on the surface of the coating if the length is too long, so adopting the settings in this embodiment can prevent pitting on the surface of the coating.

Embodiment 3

[0045] The difference from Example 2 is that the aspect ratio of the rod-shaped filler in this example is 1.5, which provides higher surface hardness under the premise of ensuring better surface leveling.

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Abstract

The invention discloses a powder material, which comprises an inorganic filler and a silane modifier, and is characterized in that the inorganic filler is a mixture composed of a composite filler anda rod-like filler according to a mass ratio of 4:6 or 5:5 or 6:4 or 7:3 , the average particle size of the composite filler is 2-4 [mu]m, and the length-diameter ratio of the rod-like filler is 1-2:1.The invention also provides a preparation method of the powder material and a powder coating with the powder material. The powder material provided by the invention has the characteristic of highlight hardening, the surface hardness of the powder coating with the powder material is improved on the premise that the surface leveling is not influenced, the powder coating has high hardness and glossiness, so that the purpose of highlight hardening can be achieved without replacing resin, and the production cost is remarkably reduced.

Description

technical field [0001] The present invention relates to a material for coating, in particular to provide a material with high optical hardening. Background technique [0002] For the high-gloss system of home appliances, furniture, profiles and other items, due to long-term contact and friction, the surface of the coating will be scratched, which will affect the appearance and usability. High-gloss high-hardness powder coatings require a hardness of 3-4H, a gloss (60°) of ≥90 degrees, and a leveling (PCI)>4; generally speaking, the only way to improve surface adhesion is to replace the resin system and cross-link the system. The surface hardness can be improved by means of force, which will result in high cost, easy pollution of other systems, and poor physical properties; or, as disclosed in the prior art of CN107011774A, comprehensively improve the hardness (such as crosslinking density, increase Hard filler, wax powder, etc.), the hardness can reach 3-4H, but the glos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C1/02C09C1/24C09C1/40C09C1/28C09C3/04C09C3/12C09C3/10C09D167/00C09D5/03C09D7/62
CPCC08K2003/2206C08K2003/222C08K2003/2227C08K2003/2272C09C1/00C09C1/02C09C1/028C09C1/24C09C1/3018C09C1/3081C09C1/309C09C1/407C09C3/006C09C3/041C09C3/10C09C3/12C09D5/033C09D167/00C08K9/06C08K9/04C08K3/36C08K3/22C08K3/38
Inventor 李杰胡林政夏古俊徐建霞
Owner SUZHOU GINET NEW MATERIAL TECH CO LTD