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Medical organic silicon quaternary ammonium salt antibacterial agent modified PP and preparation method thereof

A technology of organosilicon quaternary ammonium salt and antibacterial agent, which is applied in the field of medical organosilicon quaternary ammonium salt antibacterial agent modified PP and its preparation, which can solve the antibacterial rate of Escherichia coli and Staphylococcus aureus, impact strength and elastic modulus low level problem

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 organosilicon quaternary ammonium salt antibacterial agent modified PP and its preparation method, which solves the problems of Escherichia coli antibacterial rate, Staphylococcus aureus antibacterial rate, impact strength and elastic modulus of existing medical new materials. low technical issues

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; 3 parts of zinc stearate; 5 parts of organic silicon quaternary ammonium antibacterial agent; 0.5 part of sodium benzoate; 15 parts of LDPE; 25 parts of calcium carbonate; 0.5 parts of phosphate ester; 20 parts of polybutadiene; 0.1 part of barium stearate; 0.1 part of ultraviolet absorber UV-327; 1.5 parts of calcium stearate; 10 parts of styrene thermoplastic elastomer; 6 parts of CPE; Carbon black is 0.5 parts.

[0023] Put PP, zinc stearate, organic silicon quaternary ammonium salt antibacterial agent, sodium benzoate and barium stearate into the reaction kettle and heat to 60°C, stir for 20min at a stirring speed of 300 rpm, then add the remaining raw materials and heat up to 70°C ℃, stirred for 30 min, and the stirring speed was 400 rpm.

[0024] Put the mixed material into a single-screw extruder, feeding at 150°C, compression section at 180°C, metering section at 190°C, head at 190°C, die at 205°C.

[0025] ...

Embodiment 2

[0027] Take by weighing 100 parts in parts by weight of PP; 5 parts of zinc stearate; 25 parts of organic silicon quaternary ammonium antibacterial agents; 2.5 parts of sodium benzoate; 35 parts of LDPE; 45 parts of calcium carbonate; 4.5 parts of phosphate ester; 40 parts of polybutadiene; 0.5 parts of barium stearate; 0.5 parts of ultraviolet absorber UV-327; 3.5 parts of calcium stearate; 30 parts of styrene thermoplastic elastomer; 14 parts of CPE; Carbon black is 2.5 parts.

[0028] Put PP, zinc stearate, organic silicon quaternary ammonium salt antibacterial agent, sodium benzoate and barium stearate into the reaction kettle and heat to 80°C, stir for 40min at a stirring speed of 500 rpm, then add the remaining raw materials and heat up to 90°C ℃, stirred for 50 min, and the stirring speed was 600 rpm.

[0029] Put the mixed material into a single-screw extruder, feeding at 160°C, compression section at 190°C, metering section at 200°C, head at 200°C, die at 210°C.

[...

Embodiment 3

[0032] Take by weighing 100 parts in parts by weight of PP; 3.5 parts of zinc stearate; 10 parts of organic silicon quaternary ammonium antibacterial agent; 1 part of sodium benzoate; 20 parts of LDPE; 1.5 parts of phosphate ester; 25 parts of polybutadiene; 0.2 parts of barium stearate; 0.2 parts of ultraviolet absorber UV-327; 2 parts of calcium stearate; 15 parts of styrene thermoplastic elastomer; 8 parts of CPE; Carbon black is 1 part.

[0033] Put PP, zinc stearate, organic silicon quaternary ammonium salt antibacterial agent, sodium benzoate and barium stearate into the reaction kettle and heat to 60°C, stir for 20min at a stirring speed of 300 rpm, then add the remaining raw materials and heat up to 75°C ℃, stirred for 35 min, and the stirring speed was 450 rpm.

[0034] Put the mixed material into a single-screw extruder, feeding at 152°C, compression section at 182°C, metering section at 192°C, head at 192°C, die at 206°C.

[0035] Product impact strength 4.5kJ / m ...

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Abstract

The invention discloses medical organic silicon quaternary ammonium salt antibacterial agent modified PP and a preparation method thereof. The modified PP is prepared through the following steps: weighing the following components: PP, zinc stearate, an organic silicon quaternary ammonium salt antibacterial agent, sodium benzoate, LDPE, calcium carbonate, an antioxidant, phosphite ester, polybutadiene, barium stearate, an ultraviolet ray absorbent, calcium stearate, a styrene thermoplasticity elastomer, CPE and carbon black in parts by weight, uniformly mixing the weighed components, and extruding and pelleting the uniformly-mixed components so as to obtain the modified PP. The PP has the advantages that the impact strength is 3.5-5.5 kJ / m<2>, elasticity modulus is 2-4 GPa, the antibacterial rate for escherichia coli is 85-95%, the antibacterial rate for golden staphylococcus is 95-99%, the bacteriostasis rate for pseudomonas aeruginosa is 97.5-99.5%, the bacteriostasis rate for salmonella typhimurium and Klebsiella pneumoniae is 92-96%, and the bactericidal rate for sarcina is 90-95%.

Description

technical field [0001] The application belongs to the technical field of new medical materials, and in particular relates to a medical organosilicon quaternary ammonium salt antibacterial agent modified PP 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. As the main body of hard tissue repair materials, composite biomaterials have received extensive attention. They have the characteristics of high strength and good toughness, and have been widely used in clinica...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L23/28C08L47/00C08K13/02C08K5/098C08K3/26C08K3/04C08K5/524B29C47/92B29C48/92
CPCC08L23/12B29C48/92B29C2948/92704C08K2201/014C08L2203/02C08L2205/035C08L2207/04C08L2207/066C08L23/06C08L47/00C08L23/286C08K13/02C08K2003/265C08K5/524C08K3/04C08K5/098C08K5/3475
Inventor 徐勤霞李苏杨
Owner SUZHOU BEC BIOLOGICAL TECH
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