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Preparation method of functional powder coating

A powder coating and functional technology, which is applied in the preparation of functional powder coatings, can solve the problems of poor adhesion of inorganic antibacterial agents, harm to human health, heavy metal pollution, etc., and achieve good antibacterial effect, scientific compatibility and strong adhesion.

Inactive Publication Date: 2015-10-14
ANHUI HUAHUI SUYE TECH SHARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the antibacterial and antifungal powder coating is manufactured by melt extrusion mixing method, due to the poor adhesion of the inorganic antibacterial agent, the metal ions of the inorganic antibacterial agent will be continuously released from the nano-silver, and some countries stipulate that the PPM of silver in the water body should not exceed 0.5 PPM, otherwise it will cause heavy metal pollution and cause huge damage to the water body. If the nano-silver antibacterial agent is absorbed by the internal organs of the human body, it will accumulate and cause disease, endangering human health

Method used

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  • Preparation method of functional powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The formula of functional powder coating is as follows:

[0026] Phenolic modified epoxy resin 40%, bisphenol A epoxy resin 25%, curing agent 3%, accelerator 1%, leveling agent 1%, pigment 2%, filler 26%, antioxidant 1%, inorganic Antimicrobial 1%.

[0027] The curing agent in the formula is PSG-01 phenolic curing agent, the accelerator is dimethylimidazole, the leveling agent is BD-3376 leveling agent, and the filler is ultrafine barium sulfate and CaCO 3 Mixed according to the mass ratio of 2:1, the antioxidant is composite antioxidant JY-215, and the inorganic antibacterial agent is nano-silver inorganic antibacterial agent RHA-1.

[0028] When preparing, weigh all the components except the inorganic antibacterial agent, and pre-mix the raw materials; melt and extrude the pre-mixed materials, extrusion parameters: 100°C in the first zone and 100°C in the second zone, screw speed 45HZ ; The above-mentioned extruded material is cooled, followed by coarse crushing to ...

Embodiment 2

[0030] A functional powder coating, the parts by weight and preparation method of each component in the formula are the same as in Example 1, compared with Example 1, the components in the formula have the following differences:

[0031] The curing agent in the formula is PSG-02 phenolic curing agent, the accelerator is dimethylimidazole, the leveling agent is a mixture of butyl cellulose and hydroxymethyl cellulose in a weight ratio of 2:1, and the antioxidant is Compound antioxidant JY-255.

Embodiment 3

[0033] The formula of a kind of functional powder coating is as follows:

[0034] Phenolic modified epoxy resin 40%, bisphenol A epoxy resin 25%, curing agent 3%, accelerator 1%, leveling agent 1%, pigment 2%, filler 26.5%, antioxidant 1%, inorganic Antimicrobial agent 0.5%.

[0035] The selection and preparation method of each component in the formula are the same as in Example 1.

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Abstract

The invention discloses a preparation method of a functional powder coating. The powder coating is prepared by adopting melt extrusion and ball-milling crushing; and the anti-bacterial functional powder coating prepared by the invention has the advantages of high antibacterial agent adhesive force and long action time, so that heavy metal pollution possibly caused by silver ion release is overcome, and good and lasting antibacterial effect of the functional powder coating is guaranteed. The powder coating prepared by the invention can be widely applied to the coating of household appliances, bicycles, motor bicycles, outdoor air conditioners, automobile and tractor accessories as well as outdoor products such as forklifts, and has great application value and popularization prospect.

Description

[0001] technical field [0002] The invention belongs to the technical field of chemical coatings, and in particular relates to a preparation method of functional powder coatings. Background technique [0003] Both powder coatings and water-based coatings have the advantages of safety, environmental protection, and no pollution, and are deeply loved by the market. However, there are great differences between the two. It is a 100% solid powder coating. Powder coatings have no VOC, while water-based coatings contain a small amount of VOCs; powder coatings use few additives, and most of them are powder additives, while water-based coatings mostly use liquid additives; powder coatings are thicker and can be sprayed to a thickness of one time It can reach more than 60μm, and water-based coatings need to be sprayed many times to achieve this thickness, so powder coatings are more efficient than water-based coatings in terms of construction efficiency, and are more energy-saving; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/03C09D5/14C09D7/12B29C47/92B02C17/10B29C48/92
Inventor 费邦忠
Owner ANHUI HUAHUI SUYE TECH SHARE CO LTD
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