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Medical PS (Poly Styrene) antibacterial film and preparation method thereof

A technology of antibacterial film and antibacterial agent, applied in the field of medical PS antibacterial film and its preparation, can solve the problems of Staphylococcus aureus antibacterial rate, low heat shrinkage rate and elongation rate, etc.

Inactive Publication Date: 2015-03-04
SUZHOU BEC BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above technical problems, the present application provides a medical PS antibacterial film and its preparation method, which solves the technical problems of the existing medical new materials such as low antibacterial rate of Escherichia coli, antibacterial rate of Staphylococcus aureus, heat shrinkage rate and elongation rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 100 parts of PS according to the ratio of parts by weight; 10 parts of CPE; 1 part of nano-zirconium phosphate silver-loaded antibacterial agent; 5 parts of nano-LDPE; 20 parts of styrene-butadiene block copolymer; 10 parts of SEBS; borate surface treatment agent 1.5 parts; 20 parts of LDPE; 40 parts of dichloromethane; 15 parts of POE; 0.1 part of 2-hydroxy-4-methoxybenzophenone; 1 part of N,N-diethylethanolamine; parts; zinc stearate is 2 parts; carbon tetrachloride is 40 parts.

[0024] Put PS, CPE, nano-zirconium phosphate silver-loaded antibacterial agent, nano-LDPE and POE into the reactor and heat to 65°C, stir for 20 minutes at a stirring speed of 400 rpm, then add the remaining raw materials, heat up to 95°C, stir for 10 minutes, and stir Speed ​​600 rpm.

[0025] Put the mixed material into a twin-screw extruder to extrude and granulate. The barrel temperature is 120°C, 130°C, 140°C, 150°C, 155°C, 160°C, 165°C and 170°C, and the screw speed is 55 rpm ,...

Embodiment 2

[0028] Weigh 100 parts of PS according to the ratio of parts by weight; 30 parts of CPE; 5 parts of nano-zirconium phosphate silver-loaded antibacterial agent; 25 parts of nano-LDPE; 40 parts of styrene-butadiene block copolymer; 30 parts of SEBS; borate surface treatment agent 5.5 parts; 40 parts of LDPE; 80 parts of dichloromethane; 35 parts of POE; 0.5 parts of 2-hydroxy-4-methoxybenzophenone; 3 parts of N,N-diethylethanolamine; 30 parts of aluminum trichloride parts; zinc stearate is 8 parts; carbon tetrachloride is 60 parts.

[0029] Put PS, CPE, nano-zirconium phosphate silver-loaded antibacterial agent, nano-LDPE and POE into the reactor and heat to 85°C, stir for 40 minutes at a stirring speed of 600 rpm, then add the remaining raw materials, heat up to 135°C, stir for 30 minutes, and stir Speed ​​1000 rpm.

[0030] Put the mixed material into a twin-screw extruder for extrusion and granulation. The barrel temperature is 120°C, 130°C, 140°C, 150°C, 155°C, 160°C, 165°C...

Embodiment 3

[0033]Weigh 100 parts of PS according to the ratio of parts by weight; 15 parts of CPE; 2 parts of nano-zirconium phosphate silver-loaded antibacterial agent; 10 parts of nano-LDPE; 25 parts of styrene-butadiene block copolymer; 15 parts of SEBS; 2.5 parts of silane surface treatment agent ;25 parts of LDPE; 50 parts of dichloromethane; 20 parts of POE; 0.2 parts of 2-hydroxy-4-methoxybenzophenone; 1.5 parts of N,N-diethylethanolamine; 15 parts of aluminum trichloride; Zinc stearate is 4 parts; carbon tetrachloride is 45 parts.

[0034] Put PS, CPE, nano-zirconium phosphate silver-loaded antibacterial agent, nano-LDPE and POE into the reactor and heat to 70°C, stir for 25min at a stirring speed of 450 rpm, then add the remaining raw materials, heat up to 105°C, stir for 15min, stir Speed ​​700 rpm.

[0035] Put the mixed material into a twin-screw extruder to extrude and granulate. The barrel temperature is 120°C, 130°C, 140°C, 150°C, 155°C, 160°C, 165°C and 170°C, and the sc...

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Abstract

The invention discloses a medical PS (Poly Styrene) antibacterial film and a preparation method thereof. The preparation method comprises the following steps: weighting the following components in parts by weight: PS, CPE (Chlorinated Polyethylene), a nanometer zirconium phosphate silver-loaded antibacterial agent, nanometer LDPE (Low-Density Polyethylene), a styrene-butadiene block copolymer, SEBS (Styrene-Ethylene / Butylene-Styrene), a surface treatment agent, LDPE, dicumyl peroxide, POE (Polyolefin Elastomer), an ultraviolet absorber, N,N-diethylethanolamine, aluminum trichloride, zinc stearate and carbon tetrachloride, evenly mixing and extruding and granulating. At 0 DEG C, the product has longitudinal elongation of 5-45% and tensile strength of 45-65MPa, longitudinal heat shrinkage of 25-45%, transverse shrinkage ratio of 20-40% and tear strength of 10-12kN / m; the antibacterial rate on escherichia coli is 95.9-99.9% and the antibacterial rate on staphylococcus aureus is 97.5-99.5%.

Description

technical field [0001] The application belongs to the technical field of new medical materials, and in particular relates to a medical PS antibacterial film and a preparation method thereof. Background technique [0002] Biomedical materials refer to a class of materials with special properties and special functions, which are used for artificial organs, surgical repair, physiotherapy rehabilitation, diagnosis and treatment of diseases, and do not have adverse effects on human tissues. Now various synthetic materials and natural polymer materials, metal and alloy materials, ceramic and carbon materials, and various composite materials, the products made of them have been widely used in clinical and scientific research. Research on medical polymer materials in China started earlier and developed rapidly. At present, there are more than 50 units engaged in research in this area. There are more than 60 kinds of medical polymer materials and more than 400 kinds of products. The...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L23/28C08L23/06C08L53/02C08K13/06C08K9/12C08K3/32C08K3/16C08K5/098C08K5/02B29C47/92B29C48/92
Inventor 徐勤霞李苏杨
Owner SUZHOU BEC BIOLOGICAL TECH
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