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Antibacterial plastic material and preparation method thereof

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

Inactive Publication Date: 2016-09-07
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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  • Antibacterial plastic material and preparation method thereof
  • Antibacterial plastic material and preparation method thereof
  • Antibacterial plastic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An antibacterial plastic with the following components:

[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, 1681 parts of antioxidant, 2 parts of glycerin, 3 parts of alum.

[0018] Preparation:

[0019] (1) Weigh high-density polyethylene, hydroxycrystalline apatite, ammonium dihydrogen phosphate, ABS resin, and alum according to parts by weight, mix them evenly, and pass through a 100-mesh sieve;

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

[0021] (3) The agitated material is passed through a 150-mesh sieve and then sent to a twin-screw extruder to be extruded, pelletized and cooled to make antibacterial plastic.

Embodiment 2

[0023] An antibacterial plastic with the following components:

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

[0025] Preparation:

[0026] (1) Weigh high-density polyethylene, hydroxycrystalline apatite, ammonium dihydrogen phosphate, ABS resin, and alum according to parts by weight, mix them evenly, and pass through a 150-mesh sieve;

[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) The agitated material is passed through a 200-mesh sieve and then sent to a twin-screw extruder for extrusion, pelletized and cooled to make antibacterial plastic.

Embodiment 3

[0030] An antibacterial plastic with the following components:

[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, 1682 parts of antioxidant, 3 parts of glycerin, 4 parts of alum.

[0032] Preparation:

[0033] (1) Weigh high-density polyethylene, hydroxycrystalline apatite, ammonium dihydrogen phosphate, ABS resin, and alum in parts by weight, mix them evenly, and pass through a 125 mesh sieve;

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

[0035] (3) The agitated material is passed through a 175-mesh sieve and then sent to a twin-screw extruder for extrusion, pelletized and cooled to make 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 plastic and a preparation method thereof, in particular to an antibacterial plastic and a preparation method thereof. Background technique [0002] The performance of plastics is different. When applied to different environments, the performance requirements of plastics are also different. Because plastic products are easy to contaminate or breed many kinds of microorganisms during processing or use, including curing bacteria, it is healthy for the human body. Caused certain harm, so the antibacterial properties of the plastic used have higher requirements. [0003] At present, the preparation method of antibacterial plastics is mainly blended and compounded by adding a small amount of antibacterial agents, and its effective ingredient is antibacterial agents. These antibacterial agents are divided into inorganic antibacterial agents and organic antibacterial agents, because inorganic antibacterial agents are stable during plastic the...

Claims

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Application Information

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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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