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Modified oxide and powder coating, and preparation methods and applications thereof

A technology of powder coatings and oxides, which is applied in the field of powder coatings, can solve the problems of affecting product appearance and poor leveling performance of powder coatings, and achieve the effect of meeting decoration requirements, solving agglomeration and maintaining leveling properties

Active Publication Date: 2015-07-22
四川长虹技佳精工有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The application technology of powder coatings in metal protection is very mature, but it is mainly used in lower-end product protection, and the spraying area reaches 1-2m 2 For flat panel spraying, such as TV casings, powder coatings are required to have the characteristics of high gloss and high leveling. For example, high gloss means that the gloss is measured at a 60° angle with a gloss meter, and the gloss is ≥ 85°; the shortcomings of existing powder coatings with poor leveling performance are enlarged. affect the appearance of the product

Method used

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  • Modified oxide and powder coating, and preparation methods and applications thereof
  • Modified oxide and powder coating, and preparation methods and applications thereof
  • Modified oxide and powder coating, and preparation methods and applications thereof

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preparation example Construction

[0061] The preparation method of the modified oxide in the modified example comprises the following steps:

[0062] a. Mix and stir the oxide, triethanolamine fatty acid quaternary ammonium salt, and acetone to dissolve all the oxide and modifier to obtain a mixture; the addition amount of triethanolamine fatty acid quaternary ammonium salt is 2.6% of the oxide mass. %; the amount of acetone added so that the oxide, triethanolamine fatty acid quaternary ammonium salt can be completely dissolved;

[0063] b. Control the temperature of the mixture to ≤50°C, and stir to evaporate the solvent;

[0064] c. Grinding the mixture after the volatile solvent to a particle size of 10-100nm to obtain a modified oxide;

[0065] Among them, the oxide is obtained by mixing nano fumed silica and alumina C at a mass ratio of 1:2.2.

[0066] The obtained powder coating is used for the spraying of the metal back cover of the TV set, and the spraying effect is shown in Table 3.

Embodiment

[0084] The preparation method of modified oxide in the embodiment comprises the following steps:

[0085] a, mixing and stirring the oxide, ester-based quaternary ammonium salt, and ethanol to dissolve the oxide and modifier to obtain a mixture; the addition of triethanolamine fatty acid quaternary ammonium salt is 2.6% of the oxide mass in terms of oxide mass; The amount of acetone added is enough to completely dissolve the oxide and triethanolamine fatty acid quaternary ammonium salt;

[0086] b. Control the temperature of the mixture to ≤50°C, and stir to evaporate the solvent;

[0087] c. Grinding the mixture after the volatile solvent to a particle size of 10-100nm to obtain a modified oxide;

[0088] Among them, the oxide is obtained by mixing fumed silica and alumina C at a mass ratio of 1:2.2.

[0089] Gained modified oxide and other raw materials are weighed according to the embodiment 1-7 in table 4 respectively, and then the powder coating is prepared according to...

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Abstract

The invention belongs to the powder coating field, and specifically relates to a modified oxide and a powder coating, and preparation methods and applications thereof. The invention aims to provide the modified oxide which can balancedly improve the levelling property and fluidization of the powder coating, and the preparation method thereof, and the powder coating prepared by the modified oxide. The preparation method of the modified oxide comprises the following steps: a, dissolving an oxide and a modifier by a solvent to obtain a mixed material; b, controlling the mixed material temperature, and stirring to volatilize the solvent; and c, grinding the mixed material obtained by volatilizing the solvent in the step b into the modified oxide with the particle size of 10-100 nm, wherein the oxide of the step a is at least one of nano fumed silica and alumina C.

Description

technical field [0001] The invention belongs to the field of powder coatings, and in particular relates to a modified oxide, powder coatings and a preparation method and application thereof. Background technique [0002] At present, televisions are increasingly developing in the direction of ultra-thinning. However, the appearance grade of the plastic back cover is low, the heat dissipation efficiency is low, and the back cover made is often thicker, and the shape can no longer meet the development requirements of the TV set. Therefore, the mainstream trend of metal back cover replacing plastic back cover as TV back cover material is irresistible. As the metal back cover is an easy-to-corrosion part, the anti-corrosion and decorative effects of its surface are particularly important. Although the existing powder coating can meet the anti-corrosion requirements, it cannot meet the decoration requirements of the TV casing due to the poor leveling property of the coating. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C1/40C09C3/04C09C3/10C09D5/03C09D5/08C09D7/12
Inventor 席兵王亮智茂永
Owner 四川长虹技佳精工有限公司
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