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Antibacterial powder coating

An antibacterial powder and coating technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of water damage, poor durability, slow antibacterial effect, etc., to increase thermal stability, widen application range, antibacterial long lasting effect

Active Publication Date: 2019-08-23
六安科瑞达新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some medical devices, indoor electrical appliances, kitchen utensils, food processing equipment and other surfaces are often sprayed with powder to achieve the effect of isolation, anti-oxidation and decoration. However, the existing antibacterial powder coatings are mainly made of silver ions in silver-based antibacterial agents Bactericidal effect, but the disadvantage is that the silver ions in the silver-based antibacterial agent are easy to dissolve, and the durability is poor, and the silver ions are gradually released after the coating film is cured for 24 hours, which plays a bactericidal effect. This shows that this type of antibacterial powder coating The antibacterial effect is slow; in addition, silver ions will be continuously released from nano-silver. If released into the water body, 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 , endanger human health

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0021] The preparation method of antibacterial auxiliary agent in the following examples is:

[0022] S1. Add 0.12mol N,N-dimethylethanolamine and 200ml solvent dioxane into the three-necked flask. After stirring and dissolving completely, add 0.1mol isothiazolinone dropwise to it. After mixing evenly, turn the three-necked flask to Put it into a microwave chemical reactor with a condensing device on the top, turn on microwave heating, the power of microwave heating is 500W, the temperature is 100°C, reflux for 6h, cool to room temperature, use 3-6°C acetone for recrystallization, Promptly obtained the quaternary ammonium compound of formula A structure; Reaction formula is as follows:

[0023]

[0024] The proton nuclear magnetic spectrum result of quaternary ammonium salt compound A is: 1 HNMR (400MHz, CDCl 3 ):δ6.64(s,1H),4.15(t,2H),3.85(t,1H),3.48(t,2H),2.91(s,6H),2.64(s,3H);

[0025] S2, the preparation of antibacterial auxiliary agent

[0026] Add the antibacteria...

Embodiment 1

[0030] An antibacterial powder coating is made from the raw materials of following parts by weight: 25g epoxy resin, 25g polyester resin, 0.8g leveling agent, 0.8g smooth degassing agent, 47.9g pigment and filler, 0.5g antibacterial auxiliary agent;

[0031] Epoxy resin: Anhui Meijia New Material Co., Ltd. E-12;

[0032] Polyester resin: Anhui Shenjian New Material Co., Ltd. SJ3B;

[0033] Leveling agent: PV88 from German Dexinli Chemical;

[0034] Smooth degasser: SA500 from Lu'an Jietongda New Material Co., Ltd.;

[0035] Precipitated barium sulfate: Precipitated barium sulfate from Shaanxi Fuhua Chemical Co., Ltd.;

[0036] Titanium dioxide: ZR940+ from Jiangsu Zhentai Chemical Co., Ltd.

[0037] The preparation method of the antibacterial powder coating is as follows: put the antibacterial powder coating into the mixing tank for premixing for 10 minutes, and then melt and extrude the premix. Extrusion parameters: 1 zone 100°C, 2 zone 110°C, screw speed 50Hz , the extru...

Embodiment 2

[0039] An antibacterial powder coating is made from the raw materials of following parts by weight: 35g epoxy resin, 35g polyester resin, 1.5g leveling agent, 1.5g smooth degassing agent, 25.5g pigment and filler, 1.5g antibacterial auxiliary agent;

[0040] Epoxy resin: Anhui Meijia New Material Co., Ltd. E-12;

[0041] Polyester resin: Anhui Shenjian New Material Co., Ltd. SJ3B;

[0042] Leveling agent: PV88 from German Dexinli Chemical;

[0043] Smooth degasser: SA500 from Lu'an Jietongda New Material Co., Ltd.;

[0044] Precipitated barium sulfate: Precipitated barium sulfate from Shaanxi Fuhua Chemical Co., Ltd.;

[0045] Titanium dioxide: ZR940+ from Jiangsu Zhentai Chemical Co., Ltd.

[0046] The preparation method of the antibacterial powder coating is as follows: put the antibacterial powder coating into the mixing tank for premixing for 8 minutes, and then melt and extrude the premix. Extrusion parameters: 1 zone 100°C, 2 zone 110°C, screw speed 50Hz , the extrud...

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Abstract

The invention discloses an antibacterial powder coating which is prepared from the following raw materials in parts by weight: 25-35 parts of an epoxy resin, 25-35 parts of a polyester resin, 0.8-1.5parts of a flatting agent, 0.8-1.5 parts of a smooth degassing agent, 15.5-49 parts of pigments and fillers and 0.5-1.5 parts of an antibacterial agent. The film formed after spray curing has excellent antibacterial property, the antibacterial ability is long-term and lasting, the antibacterial active group thiazolone has an excellent effect of inhibiting and killing common bacteria, fungi, algaeand the like, and due to synergistic antibacterial and bacteriostatic abilities of quaternary ammonium salts, the prepared powder coating is capable of resisting many bacteria and fungi. The antibacterial agent B contains alcoholic hydroxyl groups, so that the compatibility and adhesiveness to other components of the coating are increased, and dispersion of the antibacterial agent in the powder coating is facilitated.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an antibacterial powder coating. Background technique [0002] Powder coating is a new type of solvent-free 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. Powder coatings are based on resins and pigments and fillers, adding necessary curing agents, additives, etc., mixed according to a certain proportion, the dispersion after melting and extrusion is cooled, then micro-crushed according to the predetermined particle size, and finally classified and screened. Made of powder coatings. Some medical devices, indoor electrical appliances, kitchen utensils, food processing equipment and other surfaces are often sprayed with powder to achieve the effect of isolation, anti-oxidation and decoration. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D167/00C09D5/03C09D5/14
CPCC09D5/033C09D5/14C09D163/00C09D167/00C08L67/00C08K5/548C08L63/00
Inventor 田华祥鲍远志
Owner 六安科瑞达新型材料有限公司
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