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Antibacterial high-strength polycarbonate composite material and preparation method thereof

A polycarbonate and composite material technology, which is applied in the field of antibacterial high-strength polycarbonate composite materials and preparation, can solve the problem that antibacterial polycarbonate plastics do not have a good solution, and can reduce the migration speed and improve the dispersing ability. , the effect of delaying the release speed

Active Publication Date: 2017-09-15
HANSER PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, there is no better solution for the development of antibacterial polycarbonate plastics

Method used

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  • Antibacterial high-strength polycarbonate composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] An antibacterial high-strength polycarbonate composite material is prepared from raw polycarbonate, inorganic compound nano antibacterial agent and compatibilizer. According to parts by weight, the parts by weight of the above-mentioned raw materials are respectively: 100 parts of polycarbonate (polycarbonate subweight is 50,000-70,000); The mass ratio of ionic nano-titanium dioxide inorganic antibacterial powder is 2:3, prepared by high-speed stirring at room temperature for 4 minutes) 15 parts; compatibilizer (EVA, molecular weight 10,000-20,000) 2 parts.

[0026] The preparation method of the modified sodium montmorillonite is that the antibacterial agent is intercalated between the sodium montmorillonite sheets, and the interval between the sodium montmorillonite sheets is 1.5-2.2nm; wherein the antibacterial agent is chlorhexidine acetate; The first-layer process is to add antibacterial agent and sodium montmorillonite to distilled water (the mass ratio of distille...

Embodiment 2

[0030] An antibacterial high-strength polycarbonate composite material is prepared from raw polycarbonate, inorganic compound nano antibacterial agent and compatibilizer. According to parts by weight, the parts by weight of the above-mentioned raw materials are respectively: 100 parts of polycarbonate (polycarbonate molecular weight is 80,000-100,000); The mass ratio of nano-titanium dioxide inorganic antibacterial powder is 1:1, prepared by high-speed stirring at room temperature for 6 minutes) 20 parts; compatibilizer (EVA, molecular weight 30,000-40,000) 2.5 parts.

[0031] The preparation method of the modified sodium montmorillonite is to intercalate the antibacterial agent between the sheets of the sodium montmorillonite, and the interlayer spacing of the sodium montmorillonite is 1.5-2.2nm; the antibacterial agent is hexadecyltriphenyl Phosmium bromide; the intercalation process is to add antibacterial agent and sodium montmorillonite to distilled water (the mass ratio ...

Embodiment 3

[0035]An antibacterial high-strength polycarbonate composite material is prepared from raw polycarbonate, inorganic compound nano antibacterial agent and compatibilizer. According to parts by weight, the parts by weight of the above-mentioned raw materials are respectively: 100 parts of polycarbonate (polycarbonate molecular weight is 60,000-80,000); The mass ratio of nano-titanium dioxide inorganic antibacterial powder is 1:3, prepared by high-speed stirring at room temperature for 3 minutes) 25 parts; compatibilizer (EVA, molecular weight 20,000-35,000) 3 parts.

[0036] The preparation method of the modified sodium-based montmorillonite is to intercalate an antibacterial agent between the layers of the sodium-based montmorillonite, and the interlayer spacing of the sodium-based montmorillonite is 1.5-2.2nm; wherein the antibacterial agent is sodium pyrithione; The first-layer process is to add antibacterial agent and sodium montmorillonite to distilled water (the mass ratio...

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Abstract

The invention relates to the technical field of polycarbonate composites and particularly discloses an antibacterial high-strength polycarbonate composite and a preparation method thereof. The polycarbonate composite is prepared from raw materials comprising, in parts by weight, 100 parts of polycarbonate, 10-20 parts of an inorganic compound nano antibacterial agent and 1-3 parts of a compatilizer. The preparation method comprises steps as follows: the prepared materials are stirred for 3-8 minutes in a high-speed mixer, then the mixture is put into a mixing mill to be mixed for 5 min at the temperature of 230-245 DEG C, the mixture is subjected to melt extrusion and pelletizing through a double-screw extruder after being ground and dried, and the antibacterial high-strength polycarbonate composite is obtained. The prepared antibacterial high-strength polycarbonate composite has good inhibition and sterilization effects on staphylococcus aureus and Escherichia coli, has good antibacterial performance and has higher mechanical strength, and products can be applied to fields such as food, medical care, electrical components and other products.

Description

technical field [0001] The invention relates to the technical field of polycarbonate composite materials, in particular to an antibacterial high-strength polycarbonate composite material and a preparation method. Background technique [0002] Polycarbonate is a widely used polymer with excellent comprehensive properties. It has outstanding impact resistance, high heat resistance and cold resistance. It is one of the most frequently used engineering plastics in recent years. , electrical and electronic, automobile, construction, office equipment, packaging, sports equipment, medical care and other fields have a wide range of uses. [0003] According to the traditional concept, plastic is smooth and dense, and it is difficult for harmful microorganisms to attach and corrode. But in fact, plastic can also be contaminated by bacteria. In recent years, with the improvement of people's living standards and the enhancement of hygiene awareness, the demand for various antibacteria...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L23/08C08K9/04C08K9/02C08K3/34C08K3/22
CPCC08L69/00C08L2203/02C08L2203/20C08L23/0853C08K9/04C08K9/02C08K3/346C08K2003/2241
Inventor 杜军戴洪湖汪连生王锋丁瑜郭连贵覃彩芹
Owner HANSER PLASTICS