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Wear-resistant antimicrobial ABS (acrylonitrile-butadiene-styrene) modified material and preparation method thereof

An ABS material and antibacterial material technology, applied in the field of medical materials, can solve the problems of inability to effectively achieve antibacterial, material scratches, insufficient strength, etc., and achieve the effect of preventing crystal agglomeration, enhancing mechanical properties, and uniform and dense film.

Active Publication Date: 2013-06-12
FOSHAN NANHAI HEQI RUN POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, antibacterial agents can be divided into two types: one is inorganic antibacterial agents, which slowly release antibacterial ions through the carrier to achieve the purpose of antibacterial. Such carriers and metal ions have low toxicity, good durability and safety, but some Some metal ions, such as silver ions, are easy to generate oxides or be reduced to simple metals after photocatalysis, so they are often accompanied by discoloration; the second is organic or natural organic antibacterial agents, which have quick-acting and excellent anti-mold effects, etc. characteristics, but at the same time, it has the disadvantages of high toxicity, poor heat resistance, short duration of drug effect, etc.
In addition, due to the characteristics of surface energy, nano-sized antibacterial agents are easy to agglomerate in polymer materials, and cannot effectively achieve the antibacterial technical effect
[0004] In addition, although ABS resin has the advantages of high impact resistance mentioned above, it still has the disadvantages of poor wear resistance and insufficient strength in practical applications.
High gloss is also one of the signs of high-end plastic products. Compared with other thermoplastics, ABS has better gloss and can meet the needs of the home appliance and automobile industries, but its own scratch resistance is poor, and slight friction may also cause Scratches and diffuse phenomena appear on the surface of the material, which affects its gloss, and the lack of mechanical strength also greatly affects its application range
[0005] CN102558747A provides an ABS material with antibacterial properties and a preparation method thereof, wherein modified nano-titanium dioxide ions obtained by doping treatment and coupling modification treatment are added, but according to the antibacterial principle of titanium dioxide, it can only In this case, the antibacterial effect can be produced, which greatly limits the antibacterial effect and application occasions of the material, and in this method, titanium dioxide needs to be modified to distribute nano-titanium dioxide evenly in the ABS material, which also increases the process. In addition, because there is no other process, the ABS material obtained by this method has general wear resistance and other mechanical properties, and there are also the above-mentioned defects of ABS resin

Method used

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  • Wear-resistant antimicrobial ABS (acrylonitrile-butadiene-styrene) modified material and preparation method thereof
  • Wear-resistant antimicrobial ABS (acrylonitrile-butadiene-styrene) modified material and preparation method thereof
  • Wear-resistant antimicrobial ABS (acrylonitrile-butadiene-styrene) modified material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Using the melt blending method to mix 75 parts of PC, 2 parts of nano-titanium dioxide particles, 3 parts of nano-silver particles, 6 parts of ethylene-propylene copolymer, 0.1 parts of antioxidant BHT, 10 parts of MBS and 3.9 parts by weight Parts of styrene-maleic anhydride random copolymer were mixed evenly.

[0027] The above materials are injection molded into a cylindrical shape with 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 15 minutes.

[0028] After sputtering, the thickness of the titanium dioxide film on the surface of the plate is 300nm.

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-mentioned materials are blown into a conduit shape by a blow molding machine, placed overnight under natural conditions, and then the conduit is placed in an oxygen-containing gas atmosphere, with pure titanium as the 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 20 minutes.

[0032] After sputtering, the thickness of the titanium dioxide film on the surface of the plate is 450nm.

Embodiment 3

[0034] 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.

[0035] The above components are dried until the water content is lower than 0.01 wt%, and the above components are melted and mixed with an internal mixer to prepare an ABS modified material.

[0036] 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 30 minutes.

[0037] After spu...

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Abstract

The invention provides a wear-resistant antimicrobial modified ABS (acrylonitrile-butadiene-styrene) material and a preparation method thereof. The ABS material comprises nano titanium dioxide and nano silver, and a nano titanium dioxide film is formed on the surface of the shaped material. The ABS modified material provided by the invention has continuous antimicrobial effect, can prevent the crystallization and aggregation of the nano material, and effectively enhances wear resistance and other mechanical properties such as bending strength, tensile strength and shock strength.

Description

technical field [0001] The invention relates to an ABS modified material in the field of medical materials, in particular to an ABS modified material with wear resistance and antibacterial properties and good mechanical properties and a preparation method thereof. Background technique [0002] ABS is an acrylonitrile-styrene-butadiene copolymer. It is a light yellow granular or powdery opaque resin. It is non-toxic, odorless, light in weight, has excellent impact resistance, good low temperature performance and chemical resistance, and Good dimensional stability, high surface gloss, easy to color and spray. [0003] In recent years, the demand for antimicrobial properties of polymeric materials has been increasing. In daily life, external environments such as suitable temperature and humidity are easy to cause bacteria to breed and infect in ABS plastic products, but antibacterial plastics made by adding inorganic antibacterial agents, organic or natural organic antibacteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L51/00C08L35/06C08K3/22C08K3/08C08J7/06C23C14/34C23C14/08
Inventor 石鑫袁绍彦刘奇祥吴博叶丹滢
Owner FOSHAN NANHAI HEQI RUN POLYMER MATERIAL CO LTD
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