Antibacterial composite material for coating and preparation method

A technology of composite materials and coatings, which is applied in the field of composite materials for coatings, can solve the problems that shells cannot be directly applied, ignore the loading performance of shell powder, etc., and achieve the goal of improving quantum efficiency and photocatalytic performance, improving loading performance, and improving performance Effect

Active Publication Date: 2021-04-02
FOSHAN SHUNDE HESHENG CHEMICAL INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diatomite, protein earth, attapulgite, sepiolite, zeolite, expanded perlite, expanded vermiculite, and white carbon black are used as photocatalyst carriers, but they are suitable for other materials in construction, such as diatomite itself It has the characteristics of large porosity, strong absorption, stable chemical properties, wear resistance, and heat resistance. It can be used as a part of building wall materials, but ordinary shells cannot be directly used in the building environment.
[0005] Chinese patent application number: CN200810026525.7 discloses a nano-titanium dioxide impregnation preparation method using shell powder as a carrier, but its content focuses on the cooperation of shell powder and nano-titanium dioxide carrier, ignoring the carrying performance of shell powder

Method used

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  • Antibacterial composite material for coating and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1. Grind the shells of rock oysters that have grown for 3-5 years in Kumamoto Prefecture, Japan, and fully grind and screen to obtain shell powder of 800 mesh to 1250 mesh and shell powder of more than 2500 mesh, and the rest of the shell powder does not meet the requirements Flow stagnation in the next batch of shells for uniform grinding;

[0022] Step 2. Separately calcine and modify the shell powder of 800 mesh to 1250 mesh and the shell powder of more than 2500 mesh, specifically calcining in an aerobic environment at 500°C for 20 minutes to obtain the modified shell powder; the modified shell powder Add it to the citric acid solution with a concentration of 0.01mol / L and a pH value of 5.5. After ultrasonic dispersion, add it to an ultrasonic atomization device, and spray it into a high-temperature furnace at a temperature of 80-120°C through a high-pressure nozzle for spraying Dried to obtain surface carboxylated active shell powder;

[0023] Step 3. Add a c...

Embodiment 2

[0026] Step 1. Selected from Kumamoto Prefecture, Japan, the shells of rock oysters grown for 3-5 years are ground, fully ground and screened to obtain shell powder of 800 mesh to 1250 mesh and shell powder of more than 2500 mesh, and the rest of the shell powder does not meet the requirements. Stay in the next batch of shells for uniform grinding.

[0027] Step 2. Separately calcine and modify the shell powder of 800 mesh to 1250 mesh and the shell powder of more than 2500 mesh. Specifically, calcining in an aerobic environment at 500°C for 20 minutes to obtain modified shell powder, the modified shell The powder is added to a citric acid solution with a concentration of 0.01mol / L and a pH value of 5.5. After ultrasonic dispersion, it is added to an ultrasonic atomization device and sprayed into a high-temperature furnace at a temperature of 80-120°C through a high-pressure nozzle. Spray drying to obtain surface carboxylated active shell powder;

[0028] Step 3. Add a certai...

Embodiment 3

[0031] Step 1. Selected from Kumamoto Prefecture, Japan, the shells of rock oysters grown for 3-5 years are ground, fully ground and screened to obtain shell powder of 800 mesh to 1250 mesh and shell powder of more than 2500 mesh, and the rest of the shell powder does not meet the requirements. Stay in the next batch of shells for uniform grinding.

[0032] Step 2. Separately calcine and modify the shell powder of 800 mesh to 1250 mesh and the shell powder of more than 2500 mesh. Specifically, calcining in an aerobic environment at 400 ° C for 30 minutes to obtain modified shell powder, the modified shell powder Add it to a citric acid solution with a concentration of 0.01mol / L and a pH value of 6. After ultrasonic dispersion, add it to an ultrasonic atomization device, and spray it into a high-temperature furnace at a temperature of 80-120°C through a high-pressure nozzle for spraying Dried to obtain surface carboxylated active shell powder;

[0033] Step 3. Add a certain am...

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Abstract

The invention belongs to the technical field of composite materials for coatings, and particularly relates to an antibacterial composite material for coatings and a preparation method thereof. The invention discloses an antibacterial composite material for a coating and a preparation method, the antibacterial composite material takes micron-sized carboxylated active shell powder as a carrier and nano TiO2 as an effective photocatalyst, and the nano TiO2 is samarium and palladium co-doped nano TiO2 with high catalytic activity; the material can be applied to a coating additive, and has a good antibacterial effect.

Description

technical field [0001] The invention belongs to the technical field of composite materials used for coatings, and in particular relates to antibacterial composite materials used for coatings and a preparation method thereof. Background technique [0002] With the rapid development of the marine shellfish farming industry, the output of shellfish in my country is huge, and it shows a trend of increasing year by year. Although the increase in shellfish production has improved the economic income of fishermen, it has also produced a large amount of "shell garbage" piled up everywhere. , because these discarded shells are discarded at garbage dumps or seasides without treatment, which not only occupies land resources but also pollutes the environment. A large number of pathogens breed, and this pollution will affect and restrict the deterioration of the marine shellfish farming environment, causing large-scale death of many shellfish, seriously hindering the development of the far...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/14
CPCC09D5/14
Inventor 陆浩然何锦华钟标
Owner FOSHAN SHUNDE HESHENG CHEMICAL INDUSTRIAL CO LTD
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