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Surface treatment process for enabling plastics to have antibacterial function

A plastic surface treatment and plastic technology, applied to biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve problems such as difficult to clean, easy to breed bacteria, and coating peeling off, to achieve enhanced antibacterial Function, high antibacterial property, long antibacterial time effect

Inactive Publication Date: 2017-05-10
NANJING CONCORD FERTILIZER CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plastic products are widely used and are usually placed in different environments. When plastic is placed in a liquid environment, a layer of dirt will form on the surface of the plastic, and after a long period of storage, a layer of bacteria will form, and it is difficult to clean up
In order to prevent the generation of bacteria, existing enterprises usually coat a layer of antibacterial coating on the surface of the plastic during the production of plastics. However, after the plastic is used for a long time, the coating on the plastic surface will fall off to a certain extent. This makes plastic surfaces more prone to the growth of bacteria

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A plastic surface treatment process with antibacterial function, the specific steps are as follows:

[0034] (1) Plastic degreasing: place the plastic in a degreasing solution, and degrease the surface; the degreasing solvent is a mixture of acetone and butanone, and the volume ratio of acetone and butanone is 4:1;

[0035] (2) Coarsening of plastic: Soak the plastic in the roughening pretreatment solution for 1 minute at 19°C, then soak the plastic in the roughening solution for 28 minutes at 62°C, then put the plastic Put into ultrasonic cleaning machine and take out after cleaning 13 minutes; Coarsening pretreatment solution is the mixture of potassium dichromate, sulfuric acid and water, and the mass ratio of described potassium dichromate, sulfuric acid, water is 5:1:7; The solution is a mixture of chromic acid, sulfuric acid and water, and the mass ratio of the chromic acid, sulfuric acid and water is 2:3:30;

[0036] (3) Plastic neutralization: Mix ethylene glyc...

Embodiment 2

[0047] A plastic surface treatment process with antibacterial function, the specific steps are as follows:

[0048](1) Plastic degreasing: place the plastic in a degreasing solution, and degrease the surface; the degreasing solvent is a mixture of acetone and butanone, and the volume ratio of acetone and butanone is 4:1;

[0049] (2) Coarsening of plastic: Soak the plastic in the roughening pretreatment solution for 0.5 minutes at 25°C, then soak the plastic in the roughening solution for 15 minutes at 69°C, then put the plastic Put into ultrasonic cleaning machine and take out after cleaning 18 minutes; Coarsening pretreatment solution is the mixture of potassium dichromate, sulfuric acid and water, and the mass ratio of described potassium dichromate, sulfuric acid, water is 5:1:7; The solution is a mixture of chromic acid, sulfuric acid and water, and the mass ratio of the chromic acid, sulfuric acid and water is 2:3:30;

[0050] (3) Plastic neutralization: Mix ethylene gl...

Embodiment 3

[0061] A plastic surface treatment process with antibacterial function, the specific steps are as follows:

[0062] (1) Plastic degreasing: place the plastic in a degreasing solution, and degrease the surface; the degreasing solvent is a mixture of acetone and butanone, and the volume ratio of acetone and butanone is 4:1;

[0063] (2) Coarsening of plastic: Soak the plastic in the roughening pretreatment solution for 0.5 minutes at 21°C, then soak the plastic in the roughening solution for 15 minutes at 68°C, then put the plastic Put into ultrasonic cleaning machine and take out after cleaning 16 minutes; Coarsening pretreatment solution is the mixture of potassium dichromate, sulfuric acid and water, and the mass ratio of described potassium dichromate, sulfuric acid, water is 5:1:7; The solution is a mixture of chromic acid, sulfuric acid and water, and the mass ratio of the chromic acid, sulfuric acid and water is 2:3:30;

[0064] (3) Plastic neutralization: Mix ethylene g...

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PUM

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Abstract

The invention relates to a surface treatment process for enabling plastics to have an antibacterial function. The surface treatment process comprises the following steps: (1) degreasing the plastics: putting the plastics into a degreasing solution for carrying out degreasing treatment; (2) roughening the plastics: sequentially dipping the plastics into a roughening pretreatment solution and a roughening solution, and soaking; (3) neutralizing the plastics: mixing gylcol ester, sodium tripolyphosphate and water and evenly stirring, and dipping the plastics into a 30% sodium hydroxide solution for soaking; (4) catalyzing the plastics: adding trichloro-sym-diphenylurea and acetone into a catalytic solution and stirring, then adding silver nitrate and zinc nitrate into the obtained mixed solution, and stirring; putting the plastics into the mixed solution, soaking and standing; (5) treating by using oxidizing flame: calcining the plastics on the oxidizing flame; (6) carrying out vacuum treatment: spraying a catalytic solution, pumped into a spraying device, on the plastics under a vacuum condition; (7) drying the plastics. After the surface treatment process is used, a surface layer with the antibacterial function can be formed on the surface of the plastics, so that the antibacterial property of the plastics is effectively improved.

Description

technical field [0001] The invention relates to the technical field of plastic surface treatment, in particular to a plastic surface treatment process with antibacterial function. Background technique [0002] Plastic is a polymer compound made of monomer as raw material through addition polymerization or polycondensation reaction. Because plastic itself has the advantages of low cost, strong plasticity, light material, good insulation, and low thermal conductivity, it can be directly processed into living materials. , Industrial and other supplies. Plastic products are widely used and are usually placed in different environments. When plastic is placed in a liquid environment, a layer of dirt will form on the surface of the plastic, and after a long period of storage, a layer of bacteria will form, and it is difficult to clean up. In order to prevent the generation of bacteria, existing enterprises usually coat a layer of antibacterial coating on the surface of the plasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/14C08J7/12C08J7/04C09D183/04C09D5/14
CPCC08J7/0427C08J7/12C08J7/14C08J2300/00C08J2483/04C09D5/14C09D183/04
Inventor 黄艳
Owner NANJING CONCORD FERTILIZER CHEM
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