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Acrylic resin powder coating formula

A technology of acrylic resin and powder coating, applied in the direction of powder coating, etc., can solve the problems of poor physical properties, low molecular weight, easy to produce fine bubbles, etc., and achieve high weather resistance, pollution resistance, and good leveling effect

Inactive Publication Date: 2018-03-13
袁传江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, thermosetting powder coatings use thermosetting resin as a film-forming substance. After adding a curing agent for cross-linking reaction, it can form a hard coating that is insoluble and infusible. As the layer is softened, it can only be decomposed. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the coating has better leveling properties and better decorative properties. After the low molecular weight prepolymer is cured, it can form a network crosslinked macromolecule, so the coating has good corrosion resistance and mechanical properties, so the development of thermosetting powder coatings is particularly rapid. However, in the prior art, its powder coatings Composed of polyester resin, blocked isophor copper diisocyanate, benzoin and dibutyltin dilaurate, its disadvantages are poor physical properties, poor covering effect, easy to produce fine bubbles, and cannot meet the requirements of electrical spraying and surface protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An acrylic resin powder coating formulation, the mixed coating formulation is 2500-3000g xylene, 290-312g butyl methacrylate, 530-600g hydroxypropyl methacrylate, 18-25g glycidyl acrylate, azobis 35-50g of isobutyronitrile, 0.5-2g of n-dodecyl mercaptan.

[0014] The copolymer hydroxyl value of the butyl methacrylate is 77 mgKOH / g.

[0015] The softening point of the hydroxypropyl methacrylate is 90-105°C.

Embodiment 2

[0017] An acrylic resin powder coating formula, the mixed coating formula is 2500g xylene, 290g butyl methacrylate, 530g hydroxypropyl methacrylate, 18g glycidyl acrylate, 35g azobisisobutyronitrile, n-dodecyl Alkyl mercaptan 0.5 g.

Embodiment 3

[0019] An acrylic resin powder coating formula, the mixed coating formula is xylene 3000g, butyl methacrylate 312g, hydroxypropyl methacrylate 600g, glycidyl acrylate 25g, azobisisobutyronitrile 50g, n-dodecyl Alkyl mercaptan 2g.

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PUM

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Abstract

The invention discloses an acrylic resin powder coating formulation, the mixed coating formulation is 2500-3000g of xylene, 290-312g of butyl methacrylate, 530-600g of hydroxypropyl methacrylate, and 18-25g of glycidyl acrylate , azobisisobutyronitrile 35-50g, n-dodecyl mercaptan 0.5-2g, after baking, a coating surface with excellent properties can be obtained, such as the durability of the coating film, which has abrasion resistance, impact It also has high weather resistance and pollution resistance. The powder coating can reach 50-300μm in one spray, and has good leveling property, which will not be thick like solvent coating. Sometimes there will be dripping or stagnation.

Description

technical field [0001] The invention relates to a formula of acrylic resin powder coating. Background technique [0002] Powder coating is a new type of solvent-free 100% solid powder coating. It has the characteristics of no solvent, no pollution, recyclable, environmental protection, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film. [0003] At present, thermosetting powder coatings use thermosetting resin as a film-forming substance. After adding a curing agent for cross-linking reaction, it can form a hard coating that is insoluble and infusible. No matter how high the temperature is, the coating will not be like thermoplastic coating. As the layer is softened, it can only decompose. Since the resin used in thermosetting powder coatings is a prepolymer with a low degree of polymerization and a low molecular weight, the coating has better leveling and decorative properties. After the low molecular weight prepolymer i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C09D5/03
CPCC09D133/14C09D5/03
Inventor 袁传江
Owner 袁传江
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