A kind of antibacterial plastic and preparation method thereof

A technology for antibacterial plastics and raw materials, applied in the field of antibacterial plastics and their preparation, can solve the problems of high toxicity to the human body, poor temperature resistance, environmental pollution, etc., and achieve the effects of small particle size, strong antibacterial performance and wide application.

Inactive Publication Date: 2018-06-12
南京禾宇化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the production method of antibacterial plastics is mainly made by adding a small amount of antibacterial agents, blending and compounding, and its active ingredients are antibacterial agents. , the application is more common, but most inorganic antibacterial agents are heavy metal ions, such as nano-silver, which are highly toxic to the human body and cause environmental pollution
The main varieties of organic antibacterial agents include aromatic aldehydes, ethyl vanillin compounds, quaternary ammonium salts and biguanides, etc. Organic antibacterial agents have poor temperature resistance, and there are dissolution and precipitation phenomena after long-term use

Method used

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  • A kind of antibacterial plastic and preparation method thereof
  • A kind of antibacterial plastic and preparation method thereof
  • A kind of antibacterial plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An antibacterial plastic, the components are as follows:

[0017] 25 parts of high-density polyethylene, 10 parts of hydroxyapatite, 5 parts of chitosan, 4 parts of ammonium dihydrogen phosphate, 20 parts of ABS resin, 1 part of antioxidant 168, 2 parts of glycerin, and 3 parts of alum.

[0018] Preparation:

[0019] (1) Take high-density polyethylene, hydroxyapatite, ammonium dihydrogen phosphate, ABS resin, alum by parts by weight, mechanically mix, cross 100 mesh sieves;

[0020] (2) Stir the mixed material in a high-speed mixer at 120° C. for 15 minutes, and add chitosan, antioxidant, glycerin and water 1.5 times the weight of the material after mixing;

[0021] (3) After the stirred material is passed through a 150-mesh sieve, it is sent to a twin-screw extruder for extrusion, and after pelletizing, it is cooled to make an antibacterial plastic.

Embodiment 2

[0023] An antibacterial plastic, the components are as follows:

[0024] 38 parts of high-density polyethylene, 15 parts of hydroxyapatite, 12 parts of chitosan, 7 parts of ammonium dihydrogen phosphate, 32 parts of ABS resin, 3 parts of antioxidant 164, 4 parts of glycerin, and 5 parts of alum.

[0025] Preparation:

[0026] (1) Take high-density polyethylene, hydroxyapatite, ammonium dihydrogen phosphate, ABS resin, alum by parts by weight, mechanically mix, cross 150 mesh sieves;

[0027] (2) Stir the mixed material in a high-speed mixer at 150° C. for 10 minutes, and add chitosan, antioxidant, glycerin and water twice the weight of the mixed material during stirring;

[0028] (3) After the stirred material is passed through a 200-mesh sieve, it is sent to a twin-screw extruder for extrusion, and after pelletizing, it is cooled to make an antibacterial plastic.

Embodiment 3

[0030] An antibacterial plastic, the components are as follows:

[0031] 32 parts of high-density polyethylene, 13 parts of hydroxyapatite, 9 parts of chitosan, 5 parts of ammonium dihydrogen phosphate, 26 parts of ABS resin, 2 parts of antioxidant 168, 3 parts of glycerin, and 4 parts of alum.

[0032] Preparation:

[0033] (1) Take high-density polyethylene, hydroxyapatite, ammonium dihydrogen phosphate, ABS resin, alum by parts by weight, mechanically mix, cross 125 mesh sieves;

[0034] (2) Stir the mixed material in a high-speed mixer at 135° C. for 13 minutes, and add chitosan, antioxidant, glycerin and water 1.8 times the weight of the mixed material in an appropriate amount;

[0035] (3) After the stirred material is passed through a 175 mesh sieve, it is sent to a twin-screw extruder for extrusion, pelletized and then cooled to make an antibacterial plastic.

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Abstract

The invention discloses an antibacterial plastic material which is mainly prepared from the following raw materials in parts by weight: 25-38 parts of high density polyethylene, 10-15 parts of hydroxyapatite, 5-12 parts of chitosan, 4-7 parts of ammonium dihydrogen phosphate, 20-32 parts of ABS (acrylonitrile butadiene styrene) resin, 1-3 parts of antioxidants, 2-4 parts of glycerin and 3-5 parts of alums. The invention discloses a preparation method of the antibacterial plastic material. The antibacterial plastic material prepared by the invention has favorable antimicrobial properties by adding the chitosan, the glycerin and the alums in a certain mixing ratio, meets a long-acting antibacterial requirement, and moreover, is nontoxic and environment-friendly. The preparation method of the antibacterial plastic material, which is provided by the invention, is simple in operation steps; process conditions are easy to control; particles of various components are small in particle sizes, and are uniformly dispersed in the antibacterial plastic material; the antibacterial plastic material is strong in antibacterial properties; the antibacterial plastic material provided by the invention is wide in application to the preparation of antibacterial appliances, and is easy to popularize and apply.

Description

technical field [0001] The invention relates to plastics and a preparation method thereof, in particular to an antibacterial plastic and a preparation method thereof. Background technique [0002] The properties of plastics are different. When they are applied in different environments, the performance requirements of plastics are also different. Because plastic products are easy to be contaminated or breed a variety of microorganisms during processing or use, including pathogenic bacteria are harmful to human health. It has caused certain harm, so there are higher requirements for the antibacterial properties of the plastics used. [0003] At present, the preparation method of antibacterial plastics is mainly made by adding a small amount of antibacterial agents, blending and compounding, and its active ingredients are antibacterial agents. , The application is more common, but most inorganic antibacterial agents are heavy metal ions, such as nano-silver, which are highly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L5/08C08L55/02C08K13/02C08K3/32C08K3/30C08K5/053
CPCC08L23/06C08L2205/03C08L2207/062C08L5/08C08L55/02C08K13/02C08K2003/325C08K3/32C08K2003/3045C08K5/053
Inventor 史和生
Owner 南京禾宇化工有限公司
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