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Medical silver-carrying antibacterial agent modified PP material and preparation method thereof

An antibacterial agent and modification technology, applied in the field of medical silver-loaded antibacterial agent modified PP material and its preparation, can solve the problems of Staphylococcus aureus antibacterial rate, low tensile strength and impact strength, etc.

Inactive Publication Date: 2015-03-25
SUZHOU BEC BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above technical problems, this application provides a medical silver-loaded antibacterial agent modified PP material and its preparation method, which solves the problem of low antibacterial rate of Escherichia coli, antibacterial rate of Staphylococcus aureus, low tensile strength and impact strength of existing medical new materials technical problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take by weighing 100 parts in parts by weight of PP; 15 parts of EPDM rubber; 1 part of nano zirconium phosphate silver-loaded antibacterial agent; 1 part of barium stearate; 2 parts of acetone; 10 parts of talcum powder; 0.1 parts; 0.1 parts of titanium dioxide; 5 parts of ethylene; 20 parts of butadiene rubber; 2.5 parts of borate surface treatment agent; 0.5 parts of lead stearate; 4 parts of propylene; 1.5 parts of zinc oxide; 3 parts of ethyl-2-norbornene.

[0023] Put PP, EPDM rubber, nano-zirconium phosphate silver-loaded antibacterial agent, barium stearate and butadiene rubber into the reaction kettle and heat to 60°C, stir for 30 minutes at a stirring speed of 200 rpm, then add the remaining raw materials, Raise the temperature to 110°C and stir for 60 minutes at a stirring speed of 400 rpm.

[0024] 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 80 rpm, extru...

Embodiment 2

[0027] Take by weighing 100 parts in parts by weight of PP; 35 parts of EPDM rubber; 5 parts of nano zirconium phosphate silver-loaded antibacterial agent; 3 parts of barium stearate; 8 parts of acetone; 30 parts of talcum powder; 0.3 parts; 2.5 parts of titanium dioxide; 9 parts of ethylene; 40 parts of butadiene rubber; 4.5 parts of borate surface treatment agent; 4.5 parts of lead stearate; 8 parts of propylene; 5.5 parts of zinc oxide; 5 parts of ethyl-2-norbornene.

[0028] Put PP, EPDM rubber, nano-zirconium phosphate silver-loaded antibacterial agent, barium stearate and butadiene rubber into the reaction kettle and heat to 80°C, stir for 50 minutes at a stirring speed of 400 rpm, then add the remaining raw materials, Raise the temperature to 130°C and stir for 100 min at a stirring speed of 600 rpm.

[0029] Put the mixed material into the 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 100 rpm, ext...

Embodiment 3

[0032] Take by weighing 100 parts in parts by weight of PP; 20 parts of EPDM rubber; 2 parts of nano zirconium phosphate silver-loaded antibacterial agent; 1.5 parts of barium stearate; 4 parts of acetone; 15 parts of talcum powder; 0.15 parts; 0.5 parts of titanium dioxide; 6 parts of ethylene; 25 parts of butadiene rubber; 3 parts of borate surface treatment agent; 1.5 parts of lead stearate; 5 parts of propylene; 2.5 parts of zinc oxide; 3.5 parts of ethyl-2-norbornene.

[0033] Put PP, EPDM rubber, nano zirconium phosphate silver-loaded antibacterial agent, barium stearate and butadiene rubber into the reaction kettle and heat to 65°C, stir for 35min at a stirring speed of 250 rpm, then add the remaining raw materials, Raise the temperature to 115°C and stir for 70 minutes at a stirring speed of 450 rpm.

[0034] 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 85 rpm, extru...

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Abstract

The invention discloses a medical silver-carrying antibacterial agent modified PP material and a preparation method thereof. The PP material is prepared through the following steps: weighing the components of PP, EPDM, a nanometer silver-carrying zirconium phosphate antibacterial agent, barium stearate, acetone, talcum powder, an antioxidant, titanium dioxide, dicumyl peroxide, butadiene rubber, a surface treating agent, lead stearate, propylene, zinc oxide and 5-ethylidene-2-norbornene in parts by weight, uniformly mixing the weighed components, and extruding and pelleting the uniformly-mixed components so as to obtain the PP material. The PP material has the advantages that the breaking elongation rate is 15-55%, the tensile strength is 28-30 MPa, the antibacterial rate for escherichia coli is 98-99%, the antibacterial rate for golden staphylococcus is 97.5-99.5%, the impact strength is 3-5 kJ / m<2>, the bactericidal rate for pseudomonas aeruginosa is 99-99.5%, and the bacteriostasis rate for salmonella typhimurium and Klebsiella pneumoniae is 92-96%.

Description

technical field [0001] The application belongs to the technical field of new medical materials, and in particular relates to a medical silver-loaded antibacterial agent modified PP 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. Biomedical materials are new high-tech materials used to diagnose, treat, repair or replace damaged tissues and organs of living organisms or enhance their functions. It is the basis for the study of artificial organs and medi...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/16C08L9/00C08K13/02C08K3/08C08K5/098C08K3/34C08K3/22C08K5/01C08K5/07B29C47/92B29C48/92
CPCC08K2003/2241C08L23/12B29C48/92B29C2948/92704C08K2201/011C08K2201/014C08L2203/02C08L2205/03C08L23/16C08L9/00C08K13/06C08K9/12C08K2003/0806C08K3/34C08K2003/2296C08K5/098
Inventor 徐勤霞李苏杨
Owner SUZHOU BEC BIOLOGICAL TECH
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