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Medical PP inorganic antibacterial composite and preparation method thereof

A composite material, inorganic antibacterial technology, applied in the field of medical new material technology, can solve the problems of low tensile strength and bending strength

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] Aiming at the above technical problems, the present application provides a medical PP inorganic antibacterial composite material and its preparation method, which solves the technical problems of the existing medical new materials such as Escherichia coli antibacterial rate, Staphylococcus aureus antibacterial rate, low tensile strength and bending strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take by weighing 100 parts in parts by weight of PP; 1.5 parts of divinylbenzene; 1 part of nano zirconium phosphate silver-loaded antibacterial agent; 10 parts of AC foaming agent; 0.05 part of calcium stearate; 20 parts of PE; 0.1 part; 1 part of paraffin; 0.3 part of dicumyl peroxide; 5 parts of titanium dioxide; 2.5 parts of silane surface treatment agent; 0.2 part of didodecyl thiodipropionate; 1 part of azodicarbonamide; Sodium benzoate is 1 part; titanate coupling agent is 0.8 parts.

[0024] Put PP, divinylbenzene, nano-zirconium phosphate silver-loaded antibacterial agent, AC foaming agent and titanium dioxide into the reactor and heat to 130°C, stir for 20min at a stirring speed of 400 rpm, then add the remaining raw materials and heat up to 190°C , stirred for 10 min, and the stirring speed was 200 rpm.

[0025] Put the mixed material into a twin-screw extruder, the barrel temperature is 190°C, 195°C, 200°C, 205°C, 210°C, 215°C and 220°C, the screw speed is ...

Embodiment 2

[0028] Take by weighing 100 parts in parts by weight of PP; 3.5 parts of divinylbenzene; 5 parts of nano-zirconium phosphate silver-loaded antibacterial agents; 20 parts of AC foaming agents; 0.25 parts of calcium stearate; 40 parts of PE; 0.3 parts; 5 parts of paraffin; 0.7 parts of dicumyl peroxide; 25 parts of titanium dioxide; 4.5 parts of silane surface treatment agent; 0.8 parts of didodecyl thiodipropionate; 3 parts of azodicarbonamide; Sodium benzoate is 10 parts; titanate coupling agent is 2.2 parts.

[0029] Put PP, divinylbenzene, nano-zirconium phosphate silver-loaded antibacterial agent, AC foaming agent and titanium dioxide into the reactor and heat to 150°C, stir for 40min at a stirring speed of 600 rpm, then add the remaining raw materials and heat up to 210°C , stirred for 30min, and the stirring speed was 600 rpm.

[0030] Put the mixed material into a twin-screw extruder, the barrel temperature is 190°C, 195°C, 200°C, 205°C, 210°C, 215°C and 220°C, the scre...

Embodiment 3

[0033] Take by weighing 100 parts of PP according to the proportioning of parts by weight; 3 parts of divinylbenzene; 2 parts of nano-zirconium phosphate silver-loaded antibacterial agent; 12 parts of AC foaming agent; 0.1 part of calcium stearate; 25 parts of PE; 0.15 parts; 2 parts of paraffin; 0.4 parts of dicumyl peroxide; 10 parts of titanium dioxide; 3 parts of borate surface treatment agent; 0.3 parts of didodecyl thiodipropionate; parts; sodium benzoate is 3 parts; titanate coupling agent is 1.2 parts.

[0034] Put PP, divinylbenzene, nano-zirconium phosphate silver-loaded antibacterial agent, AC foaming agent and titanium dioxide into the reactor and heat to 135°C, stir for 25min at a stirring speed of 450 rpm, then add the remaining raw materials and heat up to 195°C , stirred for 15 min, and the stirring speed was 300 rpm.

[0035] Put the mixed material into a twin-screw extruder, the barrel temperature is 190°C, 195°C, 200°C, 205°C, 210°C, 215°C and 220°C, the sc...

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Abstract

The invention discloses a medical PP inorganic antibacterial composite and a preparation method thereof. The medical PP inorganic antibacterial composite is prepared by use of the steps of weighing PP, divinyl benzene, a nano-zirconium phosphate silver-loaded antibacterial agent, an AC foaming agent, calcium stearate, PE, an antioxidant, paraffin, dicumyl peroxide, titanium dioxide, a surface treating agent, thiodipropionic acid dilauryl ester, azodicarbonamide, sodium benzoate and a titanate coupling agent in parts by weight, mixing all the components evenly and then extruding and pelletizing. The relative density of the obtained composite is 0.05-0.45 and the tensile strength of the composite is 2.5-4.5MPa; besides, the composite has the antibacterial rate of 99.5-99.9% to escherichia coli, 99.5-99.9% to staphylococcus aureus and 99-99.5% to pseudomonas aeruginosa, the bending strength of 11-15MPa, the degree of crosslinking of 45-55%, the impact strength of 3-5kJ / m<2>, and the bacteriostasis rate of 92-96% to salmonella typhimurium and Klebsiella pneumonia.

Description

technical field [0001] The application belongs to the technical field of new medical materials, and in particular relates to a medical PP inorganic antibacterial composite material 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. Biomolecules constitute biomaterials, and biomaterials constitute biocomponents. Various materials and components in living organisms have their own biological functions. They are "living" and controlled by the overall organism. Some...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08K13/06C08K9/12C08K3/08C08K5/098C08K5/14C08K3/22C08K5/372C08J9/10B29C47/92B29C48/92
CPCC08K2003/2241C08L23/12B29C48/92B29C2948/92704C08J9/103C08J2203/04C08J2323/12C08L2203/02C08L2205/03C08L23/06C08L91/06C08K13/06C08K9/12C08K2003/0806C08K5/098C08K5/14C08K5/372
Inventor 徐勤霞李苏杨
Owner SUZHOU BEC BIOLOGICAL TECH
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