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A kind of leveling agent for preparing ultra-thin coating of alkyd resin powder coating

A technology of powder coating and alkyd resin, which is applied in the direction of powder coating, coating, polyester coating, etc. It can solve the problems of difficulty in applying thin layers of powder coating, poor appearance decoration effect, orange peel or pore phenomenon, etc. Good corner coverage, uniform surface tension, and reduced spraying costs

Active Publication Date: 2020-09-22
安徽江锐新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to apply thin layers of powder coatings, and solvent-based coatings are easy to form ultra-thin coatings, but it is difficult for powder coatings to achieve such an effect when coating. The average minimum film thickness is 50-70 μm. When the coating film thickness is less than 40 μm, due to The film layer is too thin, the leveling property of the coating film is poor, so the appearance decoration effect is not good, showing serious orange peel or pores

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Add 0.3 g of disodium lauryl sulfosuccinate and 0.05 g of ferrocene to 2 g of polyethylene oxide, mix well, raise the temperature to 125-130°C and keep grinding for 30 minutes to obtain modified polyethylene oxide;

[0019] (2) Add 1g of poly-dipentaerythritol hexaacrylate and 0.5g of polyvinyl butyral to 2g of modified fly ash, mix well, seal and stand for 30min in an environment of 5-10°C, and then heat up to 115-120°C ℃ heat preservation and grinding for 10 minutes, then add 20g polyaspartic acid / polyethylene glycol monomethyl ether, modified polyethylene oxide and 0.5g pregelatinized starch, continue heat preservation grinding at 115-120 ℃ for 15 minutes, wait for natural cooling to 55 After -60°C, use the superfine pulverizer to make the resulting mixture into a fine powder to obtain the leveling agent.

[0020] Preparation of polyaspartic acid / polyethylene glycol monomethyl ether: Mix 5g of polyaspartic acid and 10g of polyethylene glycol monomethyl ether, hea...

Embodiment 2

[0023] (1) Add 0.3 g of disodium lauryl sulfosuccinate and 0.05 g of ferrocene to 1 g of polyethylene oxide, mix well, raise the temperature to 125-130 ° C and grind for 15 minutes to obtain modified polyethylene oxide;

[0024] (2) Add 1g of poly-dipentaerythritol hexaacrylate and 0.5g of polyvinyl butyral to 3g of modified fly ash, mix well, seal and let stand in an environment of 5-10°C for 30min, then raise the temperature to 115-120°C ℃ heat preservation and grinding for 15 minutes, then add 20g polyaspartic acid / polyethylene glycol monomethyl ether, modified polyethylene oxide and 0.5g pregelatinized starch, continue to heat preservation and grinding at 115-120 ℃ for 30 minutes, and wait for natural cooling to 55 After -60°C, use the superfine pulverizer to make the resulting mixture into a fine powder to obtain the leveling agent.

[0025] Preparation of polyaspartic acid / polyethylene glycol monomethyl ether: Mix 10g of polyaspartic acid and 15g of polyethylene glycol m...

Embodiment 3

[0035]Utilize respectively embodiment 1, embodiment 2, comparative example 1, the leveling agent made by comparative example 2 according to formula shown in table 1 to prepare alkyd resin powder coating, and set leveling agent to adopt the leveling agent of Ningbo Nanhai Chemical Co., Ltd. Agent GLP503C was used as Comparative Example 3, and the coating situation of the prepared coating was recorded, and the results are shown in Table 2.

[0036] Table 1 The formula of the embodiment of the present invention alkyd resin powder coating

[0037] raw material Example 1 Example 2 Comparative example 1 Comparative example 2 Comparative example 3 Alkyd resin 35kg 35kg 35kg 35kg 35kg amino resin 5kg 5kg 5kg 5kg 5kg Silica 5kg 5kg 5kg 5kg 5kg Titanium dioxide 3kg 3kg 3kg 3kg 3kg leveling agent 0.5kg 0.5kg 0.5kg 0.5kg 0.5kg antioxidant 0.5kg 0.5kg 0.5kg 0.5kg 0.5kg

[0038] ...

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PUM

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Abstract

The invention discloses a flatting agent for preparation of an alkyd resin powder coating ultrathin coating, and relates to the technical field of coating additives. The flatting agent is prepared from the following raw materials in parts by weight: 15 to 20 parts of polyaspartic acid / polyethylene glycol monomethyl ether, 2 to 3 parts of modified fly ash, 1 to 2 parts of polyoxyethylene, 1 to 2 parts of polydipentaerythritol hexaacrylate, 0.5 to 1 part of polyvinyl butyral, 0.5 to 1 part of pregelatinized starch, 0.3 to 0.5 part of disodium lauryl sulfosuccinate, and 0.05 to 0.1 part of ferrocene. The flatting agent is specially used for preparing the alkyd resin powder coating ultrathin coating, and has the advantages that by adding the flatting agent, the melting viscosity of the powder coating is effectively reduced, the fluidity of the coating in the melting state is improved, the surface tension of the coating is more uniform, the film thickness reaches 35 to 40mu m, the edge and corner covering condition is good, and the spraying area reaches 15 to 20m<2> / kg.

Description

Technical field: [0001] The invention relates to the technical field of coating additives, in particular to a leveling agent for preparing ultra-thin coatings of alkyd resin powder coatings. Background technique: [0002] Powder coating is a new type of solvent-free 100% solid powder coating, which 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. However, it is difficult to apply thin layers of powder coatings, and solvent-based coatings are easy to form ultra-thin coatings, but it is difficult for powder coatings to achieve such an effect when coating. The average minimum film thickness is 50-70 μm. When the coating film thickness is less than 40 μm, due to If the film layer is too thin, the leveling property of the coating film is poor, so the appearance decoration effect is not good, and serious orange peel or pores appear. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/47C09D5/03C09D167/08
CPCC09D5/033C09D167/08
Inventor 江孝林狄成敏
Owner 安徽江锐新材料有限公司
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