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Photostable antimicrobial polypropylene material product and preparation method thereof

A technology of antibacterial polypropylene and antibacterial materials, which is applied in the field of light-stable antibacterial polypropylene modified material products and its preparation, can solve problems such as light stability, human health hazards, and dispersion difficulties, and prevent crystal nucleation , Improve light stability, uniform and dense film

Inactive Publication Date: 2015-07-01
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low density of polypropylene and the characteristics of its molecular structure, polypropylene materials are prone to breed bacteria, which is harmful to human health.
In addition, as a resin material, polypropylene will inevitably have light stability, which will lead to the aging of the material and affect the use effect and service life
[0003] At present, some people have studied adding inorganic antibacterial agents to polypropylene materials to achieve antibacterial effects. However, most of the inorganic antibacterial agents added in this method are silver particles, which are difficult to disperse and have slow antibacterial effects (silver-based antibacterial agents exert their effects. need more than 24 hours), and also cannot overcome the above-mentioned light stability problem

Method used

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  • Photostable antimicrobial polypropylene material product and preparation method thereof
  • Photostable antimicrobial polypropylene material product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 85% of PP, 2% of nano-titanium dioxide particles, 3% of nano-silver particles, 6% of ethylene-propylene copolymer, 0.1% of antioxidant BHT and 3.9% of stearic acid by weight by melt blending method Zinc mixed well.

[0028] The above components are melt-mixed by twin-screw extrusion to prepare polypropylene modified material.

[0029] The above materials are injection molded into plates by an injection molding machine, placed overnight under natural conditions, and then the plates are placed in an oxygen-containing gas atmosphere, pure titanium is used as a target material, and the plasma sputtering process is performed using an existing plasma coating machine. In the plasma sputtering process, the radio frequency power is 40w, the bias voltage is 50V, and the sputtering time is 5 minutes.

[0030] After sputtering, the thickness of the titanium dioxide film on the surface of the plate is 100nm.

Embodiment 2

[0032] 87% of PP, 1% of nano-titanium dioxide particles, 1% of nano-silver particles, 6% of α-olefin oligomers, 0.1% of antioxidant 168 and 4.9% of polysilicon were mixed by weight by melt blending method. The ketones are mixed well.

[0033] The above-mentioned components were melt-mixed with twin-rotor continuous mixing equipment to prepare polypropylene modified materials.

[0034] The above materials are blown into containers by a blow molding machine, placed overnight under natural conditions, and then the container is 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 100w, the bias voltage is 65V, and the sputtering time is 10 minutes.

[0035] After sputtering, the thickness of the titanium dioxide film on the surface of the plate is 325nm.

Embodiment 3

[0037] 92% of PP, 1% of nano-titanium dioxide particles, 0.5% of nano-silver particles, 4% of ethylene-propylene copolymer, 1% of antioxidant PS802 and 1.5% of white mineral oil were mixed by weight by melt blending method. well mixed.

[0038] The above-mentioned components were melt-mixed with an internal mixer to prepare a polypropylene modified material.

[0039] The above materials are injection molded into pipes with an injection molding machine, placed overnight under natural conditions, and then the pipes are placed in an oxygen-containing gas atmosphere, pure titanium is used as the target material, and the plasma sputtering process is performed using an existing plasma coating machine. In the plasma sputtering process, the radio frequency power is 150w, the bias voltage is 80V, and the sputtering time is 20 minutes.

[0040] After sputtering, the thickness of the titanium dioxide film on the surface of the plate is 500nm.

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Abstract

The invention provides a photostable antimicrobial polypropylene material product and a preparation method thereof. A polypropylene material comprises nano titanium dioxide and nano silver, wherein a nano titanium dioxide film is coated on a formed product surface through a plasma sputtering technology. The modified polypropylene material product has a continuous antimicrobial effect, a crystal nucleation phenomenon of a nano material can be avoided, and the light stability is effectively increased.

Description

technical field [0001] The invention relates to a polypropylene modified material in the field of medical materials or building materials, in particular to a light-stable antibacterial polypropylene modified material product and a preparation method thereof. Background technique [0002] Compared with general-purpose plastics, polypropylene has the advantages of light specific gravity, low price, good mechanical properties and good heat resistance. It is often used in medical, building materials and other fields as containers, pipes or other accessories. However, due to the low density of polypropylene and the characteristics of its molecular structure, polypropylene materials are prone to breed bacteria, which is harmful to human health. In addition, as a resin material, polypropylene will inevitably have light stability, which will lead to the aging of the material and affect the use effect and service life. [0003] At present, some people have studied adding inorganic a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B33/00C08L23/12C08L23/16C08K13/02C08K3/22C08K3/08C08K5/01C08J7/04C23C14/34C23C14/08
Inventor 叶丹滢袁绍彦刘奇祥吴博石鑫
Owner KINGFA SCI & TECH CO LTD
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