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Antibacterial polystyrene material and preparation method thereof

A technology of polystyrene and polyethylene glycol, which is applied in the field of antibacterial polystyrene materials and its preparation, can solve the problems of poor heat resistance, influence on antibacterial effect, easy cracking, etc., achieve high temperature resistance, simple preparation method, good bactericidal effect

Inactive Publication Date: 2015-06-03
SUZHOU KANGHUA PURIFYING SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polystyrene is easy to crack at lower temperatures and has poor heat resistance
[0005] Patent CN102276937A discloses an antibacterial polystyrene composition and its preparation method, which is composed of polystyrene and composite antibacterial agent, wherein the composite antibacterial agent is polyguanidine / Polysilicate composite antibacterial agent is obtained by mixing the aqueous solution of water-soluble polyguanidine inorganic acid salt or organic acid salt and the aqueous solution of water-soluble silicate, and then adding the aqueous solution of water-soluble metal salt, but due to the polyphenylene Antibacterial components will be released when vinyl materials are in contact with water for a long time, thus affecting the antibacterial effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 78 kg of polystyrene, 12 kg of carboxymethyl cellulose with a diameter of 3.5 microns, 6 kg of ethylene bis-stearamide, 5 kg of maleic anhydride grafted polypropylene, and polyethylene glycol with an average molecular weight of 5000 5kg, 4kg of propylene glycol methyl ether and 0.5kg of p-chlorom-xylenol;

[0031] (2) Add the above components to a high-pressure homogenizer and mix them evenly at 80°C and 18.5Mpa;

[0032] (3) Ultrasound the uniformly mixed materials of step 2 for 5 minutes, add them to the feed port of the twin-screw extruder, melt and extrude, and pelletize to obtain antibacterial polystyrene materials;

[0033] The temperature in the first zone of the twin-screw extruder is 180°C, the temperature in the second zone is 200°C, the temperature in the third zone is 220°C, and the temperature in the fourth zone is 230°C.

[0034] Table 1 shows the performance test results of the antibacterial polystyrene material.

Embodiment 2

[0036] (1) Weigh 78 kg of polystyrene, 12 kg of carboxymethyl cellulose with a diameter of 7.8 microns, 6 kg of ethylene bisstearamide, 5 kg of maleic anhydride grafted polypropylene, and polyethylene glycol with an average molecular weight of 5000 5kg, 4kg of propylene glycol methyl ether and 0.5kg of p-chlorom-xylenol;

[0037] (2) Add the above components to a high-pressure homogenizer and mix them evenly at 80°C and 18.5Mpa;

[0038] (3) Ultrasound the uniformly mixed materials of step 2 for 5 minutes, add them to the feed port of the twin-screw extruder, melt and extrude, and pelletize to obtain antibacterial polystyrene materials;

[0039] The temperature in the first zone of the twin-screw extruder is 180°C, the temperature in the second zone is 200°C, the temperature in the third zone is 220°C, and the temperature in the fourth zone is 230°C.

[0040] Table 1 shows the performance test results of the antibacterial polystyrene material.

Embodiment 3

[0042] (1) Weigh out 84 kg of polystyrene, 15 kg of carboxymethyl cellulose with a diameter of 7.8 microns, 8 kg of ethylene bisstearamide, 8 kg of maleic anhydride grafted polypropylene, and polyethylene glycol with an average molecular weight of 8000 7kg, 6kg of propylene glycol methyl ether and 1kg of p-chlorom-xylenol;

[0043] (2) Add the above components to a high-pressure homogenizer and mix them evenly at 120°C and 19.5Mpa;

[0044] (3) Ultrasound the uniformly mixed material of step 2 for 10 minutes, add it to the feed port of the twin-screw extruder, melt-extrusion, and pelletize to obtain an antibacterial polystyrene material;

[0045] The temperature in the first zone of the twin-screw extruder is 200°C, the temperature in the second zone is 220°C, the temperature in the third zone is 240°C, and the temperature in the fourth zone is 240°C.

[0046] Table 1 shows the performance test results of the antibacterial polystyrene material.

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PUM

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Abstract

The invention discloses an antibacterial polystyrene material and a preparation method thereof. The antibacterial polystyrene material is prepared form the following components in parts by weight: 78-84 parts of polystyrene, 12-15 parts of carboxymethylcellulose, 6-8 parts of ethylene distearamide, 5-8 parts of maleic anhydride grafted polypropylene, 5-7 parts of polyethylene glycol, 4-6 parts of propylene glycol monomethyl ether and 0.5-1 part of parachlormetaxylenol. The invention further provides a preparation method of the antibacterial polystyrene material. The preparation method comprises the following steps: adding all the components into a high-pressure homogenizer and mixing uniformly; carrying out ultrasonic treatment on the uniformly mixed material for 5-10min, adding into a feeding opening of a twin-screw extruder for melt extrusion and pelleting, thus obtaining the antibacterial polystyrene material.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to an antibacterial polystyrene material and a preparation method thereof. Background technique [0002] In modern life, people pay more and more attention to the quality of the living environment. People put forward higher requirements on the quality and safety of all kinds of products that are directly in contact with human skin and have potential safety and health risks. The material used for the material needs to be environmentally friendly, and the material itself also needs to have certain antibacterial and antibacterial properties. [0003] Microorganisms can spread through various contacts and eventually attach to plastic products. People carry germs through contact with products and spread them to each other, which increases the risk of cross-infection and affects people's health. Therefore, people have put forward higher requirements for the antibacterial properties of st...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L1/28C08L51/06C08L71/02C08K5/20C08K5/06C08K5/136B29C47/92B29C48/92
Inventor 葛卫平陈宗美
Owner SUZHOU KANGHUA PURIFYING SYST ENG
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