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Medical antibacterial plastic material and preparation method thereof

A technology of antibacterial plastics and composite antibacterial agents, which is applied in the field of medical antibacterial plastic materials and its preparation, can solve the problems of low friction coefficient and poor antibacterial effect of Teflon plastic, and achieve improved compatibility, safe and effective antibacterial effect, The effect of improving additional performance

Inactive Publication Date: 2020-02-25
HANGZHOU POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent adjusts the composition of raw materials to make it have a lower coefficient of friction and shows good non-adhesive performance, but the smooth antibacterial Teflon plastic prepared by this patent has poor antibacterial effect

Method used

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  • Medical antibacterial plastic material and preparation method thereof
  • Medical antibacterial plastic material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A kind of medical antibacterial plastic material and preparation method thereof

[0032] The raw materials for preparing medical antibacterial plastic materials include: 100kg of polypropylene, 5kg of low-density polyethylene, 5kg of ethylene-vinyl acetate copolymer, 0.4kg of polypropylene grafted carboxylic acid, 2.6kg of cedar oil, 2.4kg of epoxy soybean oil, compound Antibacterial agent 8kg, magnesium oxide 8kg, sodium stearate 3.0kg, antistatic agent 0.8kg; the melt flow rate of polypropylene (230 / 2.16kg) is 100g / 10min, and the density is 0.906G / cm 3 .

[0033] Wherein, composite antibacterial agent is prepared by the following method:

[0034] Step i, adding the chitosan of 8kg concentration is in the acetic acid solution of 30%, and the weight ratio of chitosan and acetic acid solution is 1:7, obtains premix;

[0035] Step ii, mixing 20 kg of nano-zinc oxide, 8 kg of nano-titanium oxide and 1.5 kg of shell powder to obtain a mixed powder; the shell powder is she...

Embodiment 2

[0043] A kind of medical antibacterial plastic material and preparation method thereof

[0044] The raw materials for preparing medical antibacterial plastic materials include: 100kg of polypropylene, 7kg of low-density polyethylene, 15kg of ethylene-vinyl acetate copolymer, 0.3kg of polypropylene grafted carboxylic acid, 2.2kg of cedar oil, 4.8kg of epoxy soybean oil, compound Antibacterial agent 6kg, magnesium oxide 4kg, sodium stearate 3.5kg, antistatic agent 1.0kg; the melt flow rate of polypropylene (230 / 2.16kg) is 100g / 10min, and the density is 0.906G / cm 3 .

[0045] Wherein, composite antibacterial agent is prepared by the following methods:

[0046] Step i, the chitosan of 10kg is joined in the acetic acid solution that concentration is 35%, and the weight ratio of chitosan and acetic acid solution is 1:8, obtains premix;

[0047] Step ii, mixing 10kg of nano-zinc oxide, 10kg of nano-titanium oxide and 1.2kg of shell powder to obtain a mixed powder; the shell powder is...

Embodiment 3

[0055] A kind of medical antibacterial plastic material and preparation method thereof

[0056] The raw materials for preparing medical antibacterial plastic materials include: 100kg of polypropylene, 10kg of low-density polyethylene, 12kg of ethylene-vinyl acetate copolymer, 0.8kg of polypropylene grafted carboxylic acid, 1.2kg of cedar oil, 2.8kg of epoxy soybean oil, compound Antibacterial agent 18kg, magnesium oxide 3kg, sodium stearate 1.5kg, antistatic agent 1.2kg; the melt flow rate of polypropylene (230 / 2.16kg) is 100g / 10min, and the density is 0.906G / cm 3 .

[0057] Wherein, composite antibacterial agent is prepared by the following methods:

[0058] Step i, the chitosan of 15kg is joined in the acetic acid solution that concentration is 25%, and the weight ratio of chitosan and acetic acid solution is 1:5, obtains premix;

[0059] Step ii, mixing 18 kg of nano-zinc oxide, 16 kg of nano-titanium oxide and 0.6 kg of shell powder to obtain a mixed powder; the shell po...

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Abstract

The invention discloses a medical antibacterial plastic material and a preparation method thereof. The medical antibacterial plastic material is prepared from, by weight, 100 parts of polypropylene, 5-12 parts of low density polyethylene, 3-15 parts of an ethylene-vinyl acetate copolymer, 0.3-0.8 part of polypropylene grafted carboxylic acid, 1.2-2.6 parts of cedar oil, 2.4-4.8 parts of epoxidizedsoybean oil, 6-18 parts of a composite antibacterial agent, 3-8 parts of magnesium oxide, 1.5-3.5 parts of sodium stearate and 0.8-1.5 parts of an antistatic agent. The prepared medical antibacterialplastic material has a high strength and excellent impact resistance, has an antibacterial rate of 98% or above on Staphylococcus aureus and Escherichia coli, has an excellent antibacterial effect, and can be applied to medical products such as bedpans, spittoons, antibacterial armrests and antibacterial wheelchairs.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a medical antibacterial plastic material and a preparation method thereof. Background technique [0002] To meet the development needs of medical technology, the medical plastic products industry has attracted much attention due to its high added value, high growth rate and broad market potential. There are thousands of kinds of medical plastic products all over the world, and the technical content of the products is getting higher and higher, which also puts forward higher requirements for medical plastic materials. At present, the plastic materials used in medical products are mainly polyolefins. Among them, materials such as polyethylene, polypropylene, polystyrene and ABS have been widely used in medical plastic products due to their wide source, low price and stable performance. . [0003] Chinese patent CN109836706A discloses a method for preparing environmental...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L23/08C08L5/08C08L51/06C08K13/06C08K9/04C08K9/10C08K3/22C08K9/00C08K3/26
CPCC08L23/12C08L2205/035C08L2203/02C08L2207/066C08L2205/08C08K2003/2296C08K2003/2241C08K2003/265C08K2201/017C08L23/06C08L23/0853C08L5/08C08L51/06C08K13/06C08K9/04C08K9/10C08K3/22C08K9/00C08K3/26
Inventor 谭小红
Owner HANGZHOU POLYTECHNIC
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