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Modified polycarbonate medical material and preparation method thereof

A technology of polycarbonate and medical materials, applied in metal material coating technology, ion implantation plating, coating, etc., can solve the problems of unusable materials/equipment, cumbersome processing technology, and reduced service life, so as to prevent crystallization Nucleation phenomenon, uniform and dense film, and improved wear resistance

Active Publication Date: 2015-04-22
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the particularity of medical materials, it is inevitable to carry out a large number of antibacterial disinfection treatments, such as scrubbing, steam disinfection, etc. After sterilization, its favorable physical / mechanical properties decrease significantly
Therefore, after regular use, brushing and steam disinfection, on the one hand, regular use or brushing will increase the scratches on the surface of the polycarbonate material / equipment, which not only affects the appearance but also may affect its performance --- That is, the increase of scratches will help the release of internal stress, leading to larger cracks. Due to the precision of the use of material properties by medical materials, tiny cracks are likely to render the material / equipment unusable. On the other hand , the beneficial physical / mechanical properties of polycarbonate materials caused by repeated steam sterilization will also greatly reduce the service life of the materials / equipment
[0004] At present, some people have studied the use of polycarbonate to copolymerize with other polymers to improve the wear resistance of the copolymer and the physical / mechanical properties after repeated steam treatment. However, these technical methods are not only cumbersome to process, but also inevitably sacrifice Other favorable properties of polycarbonate materials, such as impact resistance, light transmittance, dimensional stability, etc. In addition, medical materials obtained by these methods still need a large number of steam sterilization treatments, and the impact on their physical / mechanical properties is inevitable

Method used

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  • Modified polycarbonate medical material and preparation method thereof
  • Modified polycarbonate medical material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The PC of 75 parts, the nano-titanium dioxide particle of 2 parts, the nano-silver particle of 3 parts, the ethylene-propylene copolymer of 6 parts, the antioxidant BHT of 0.1 part, the MBS of 10 parts and 3.9 Parts of styrene-maleic anhydride random copolymer were mixed evenly.

[0026] The above components are dried until the water content is lower than 0.01 wt%, and the above components are melt-mixed by twin-screw extrusion to prepare a polycarbonate modified material.

[0027] The above materials are injection molded into a cylindrical shape by an injection molding machine, placed overnight under natural conditions, and then placed in an oxygen-containing gas atmosphere, pure titanium is used as a target, and the plasma sputtering process is performed using an existing plasma coating machine , in the plasma sputtering process, the radio frequency power is 70w, the bias voltage is 50V, and the sputtering time is 25 minutes.

[0028] After sputtering, the thickness ...

Embodiment 2

[0030] The PC of 80 parts, the nano-titanium dioxide particle of 1.5 parts, the nano-silver particle of 1 part, the alpha olefin oligomer of 4 parts, the antioxidant 168 of 1 part, the MMB of 8 parts and 4.5 parts of styrene-maleic anhydride random copolymer were mixed evenly.

[0031] The above components are dried until the water content is lower than 0.01 wt%, and the above components are melted and mixed with a double-rotor continuous mixing device to prepare a polycarbonate modified material.

[0032]The above-mentioned materials are blown into a tube shape by a blow molding machine, placed overnight under natural conditions, and then the tube is placed in an oxygen-containing gas atmosphere, and pure titanium is used as a target material, and plasma sputtering is performed using an existing plasma coating machine. In the plasma sputtering process, the radio frequency power is 150w, the bias voltage is 65V, and the sputtering time is 30 minutes.

[0033] After sputtering...

Embodiment 3

[0035] Using the melt blending method, 86 parts of PC, 1 part of nano-titanium dioxide particles, 0.5 parts of nano-silver particles, 2 parts of ethylene-propylene copolymer, 0.1 part of antioxidant 1010, 8.4 parts of ASA and 2 parts were mixed by weight. Parts of styrene-maleic anhydride random copolymer were mixed evenly.

[0036] The above components are dried until the water content is lower than 0.01 wt%, and the above components are melt-mixed with an internal mixer to prepare a polycarbonate modified material.

[0037] The above materials are molded into sheets by an injection molding machine, placed overnight under natural conditions, and then the sheets are placed in an oxygen-containing gas atmosphere, pure titanium is used as a target, and plasma sputtering is performed using an existing plasma coating machine process, in the plasma sputtering process, the radio frequency power is 200w, the bias voltage is 80V, and the sputtering time is 40 minutes.

[0038] After ...

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Abstract

The invention provides a wear-resistant antibacterial modified polycarbonate medical material and a preparation method thereof. The polycarbonate material comprises nano titanium dioxide and nano silver; and a nano titanium dioxide film layer is formed on the surface of the formed material. The polycarbonate modified material product provided by the invention has a continuous antibacterial effect, can be used for preventing the phenomenon of nucleation of the nano material, and can be used for effectively improving the wear resistance and other mechanical performance, such as bending strength, tensile strength and anti-impact strength.

Description

technical field [0001] The invention relates to a polycarbonate modified material in the field of medical materials, in particular to a polycarbonate modified material with wear resistance and antibacterial properties and good mechanical properties and a preparation method thereof. Background technique [0002] Polycarbonate, also known as Polycarbonate, commonly abbreviated as PC, is a strong thermoplastic resin. Polycarbonate has good light transmittance, impact resistance, resistance to ultraviolet radiation and dimensional stability of its products and good molding processing performance. Since polycarbonate products can withstand steam, cleaning agents, heating and large-dose radiation disinfection, Therefore, it is often used in the field of medical materials for the preparation of medical equipment, such as syringes, blood filters, catheters, surgical implants, cannulae, wound dressings, cardiac pacemakers, etc. [0003] Due to the particularity of medical materials,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L33/12C08L33/20C08L35/06C08K3/22C08K3/08C23C14/08C23C14/34
Inventor 石鑫袁绍彦刘奇祥吴博叶丹滢
Owner KINGFA SCI & TECH CO LTD
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