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A kind of powder coating with wrinkle effect that is not easy to expose substrate after curing and preparation method thereof

A powder coating and wrinkle technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of fine particle size, low density, breaking the relative equilibrium state, etc., to achieve balance of inner surface tension and uniform wrinkle effect , The effect of not easily revealing the bottom cavity

Active Publication Date: 2016-10-05
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the surface tension difference between the wrinkle agent and the coating film is too large, the swirling vortices (Benard vortex) formed in the coating film will reach the substrate and form a cavity, so that the coating film cannot completely cover the substrate. material
What's more unfavorable is that since the currently commonly used wrinkle agents mainly include polyacrylate, polyethylene, polytetrafluoroethylene, etc., compared with the powder coating itself, these substances have relatively low density, light weight, and fine particle size, so During the spraying process, it is easy to separate from the base powder composition, resulting in changes in addition, breaking the relative balance of surface tension in the system, and exposing the base material.
Due to these weak points on the coating film, the protective effect of the coating on the substrate is greatly reduced, and the significance of powder coating is lost.

Method used

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  • A kind of powder coating with wrinkle effect that is not easy to expose substrate after curing and preparation method thereof
  • A kind of powder coating with wrinkle effect that is not easy to expose substrate after curing and preparation method thereof
  • A kind of powder coating with wrinkle effect that is not easy to expose substrate after curing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The base powder composition is made of the following raw materials in parts by weight:

[0061] 60 parts of polyester resin with an acid value of 30 mgKOH / g and a viscosity of 3500 (ICI, mPa.s / 200°C)

[0062] Triglycidyl isocyanurate 5 parts

[0063] Quaternary ammonium salt accelerator 0.3 parts

[0064] Titanium dioxide 5 parts

[0065] Barium sulfate 30 parts

[0066] Auxiliary 5 parts.

[0067] The acid value of the polyester resin is 30 mgKOH / g, the viscosity is 3500 (ICI, mPa.s / 200°C), and the horizontal flow is 20~30mm.

[0068] The wrinkle agent composition is made of the following raw materials in parts by weight; wherein ZW2 and ZW4 are used as comparative examples.

[0069]

[0070] (a) Weigh the components in the foundation powder composition and the components in the wrinkle agent composition respectively according to the proportion, place them in the mixing tank respectively, fully mix and break;

[0071] (b) The crushed materials enter the extrud...

Embodiment 2

[0076] The difference with embodiment 1 is:

[0077] The base powder composition is made of the following raw materials in parts by weight:

[0078] 45 parts of polyester resin

[0079] Triglycidyl isocyanurate 4 parts

[0080] Quaternary ammonium salt accelerator 0.5 parts

[0081] Titanium dioxide 10 parts

[0082] Barium sulfate 30 parts

[0083] Auxiliary 8 parts.

[0084] The acid value of the polyester resin is 30 mgKOH / g, the viscosity is 3500 (ICI, mPa.s / 200°C), and the horizontal flow is 20~30mm.

[0085] The foundation powder composition and the wrinkle agent composition ZW1 were dry mixed at a weight ratio of 100:5 to obtain a mixture MIX7.

Embodiment 3

[0087] The difference with embodiment 1 is:

[0088] The base powder composition is made of the following raw materials in parts by weight:

[0089] 65 parts of polyester resin

[0090] Triglycidyl isocyanurate 10 parts

[0091] 1 part quaternary ammonium salt accelerator

[0092] Titanium dioxide 20 parts

[0093] Barium sulfate 30 parts

[0094] Auxiliary 10 parts.

[0095] The acid value of the polyester resin is 30 mgKOH / g, the viscosity is 3500 (ICI, mPa.s / 200°C), and the horizontal flow is 20~30mm.

[0096] The foundation powder composition and the wrinkle agent composition ZW1 were dry mixed at a weight ratio of 100:2 to obtain a mixture MIX8.

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Abstract

The invention discloses a wrinkle effect powder coating with a substrate in low tendency to expose after solidification, the wrinkle effect powder coating comprises a bottom powder composition and a wrinkle agent composition, wherein the bottom powder composition mainly comprises epoxy resin, polyester resin, a curing agent, an accelerator and a pigment filler, the wrinkle agent composition mainly comprises an acrylate copolymer, epoxy resin, polyester resin, a curing agent and a pigment filler; and the mass ratio of the wrinkling agent composition and the bottom powder composition is 0.1%-9%. The invention also provides a preparation method of the wrinkle effect powder coating. The wrinkle effect powder coating is uniform in coating film wrinkle effect, strong in three-dimensional sense, the substrate surface is covered completely, the substrate is not easy to expose, and more effective protection is provided for the substrate.

Description

technical field [0001] The invention relates to a powder coating with wrinkle effect which is not easy to expose the substrate after curing, and also relates to a preparation method of the powder coating. Background technique [0002] Wrinkle powder coating, also known as orange pattern powder or pattern powder, is a kind of artistic powder coating that can appear regular concave-convex patterns on the surface of the cured coating. Because of its strong decorative properties, it is widely used in electric control cabinets, Coating of shells of instruments, copiers, small motors, etc. [0003] In powder coating formulations, the wrinkled appearance is generally achieved by adding wrinkling agents. The function of the wrinkle agent is that in the early stage of baking and curing of the powder coating, the surface tension of the molten film is very large, while the surface tension of the wrinkle agent is small. Due to the poor compatibility between the two substances with diff...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D163/00C09D5/03C09D5/28C09D7/12
CPCC08K2201/014C08L2205/025C08L2205/03C08L2205/035C09D5/033C09D5/28C09D167/00C08L33/04C08L67/00C08K13/02C08K2003/2241C08K2003/3045C08K5/34924C08L63/00C08K5/3445
Inventor 甘灯河邓剑辉欧阳建群梁泳田
Owner GUANGZHOU KINTE IND
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