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Inorganic nano antibacterial thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer, inorganic nano technology, applied in the field of inorganic nano antibacterial thermoplastic elastomer and its preparation, can solve the problems of easily decomposable antibacterial persistence, poor chemical thermal stability, toxicity, etc., and achieves no change in mechanical properties and processing properties. , stable performance, strong antibacterial effect

Inactive Publication Date: 2018-06-01
倍肯(浙江)科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For antibacterial, antibacterial plastics prepared by organic antibacterial agents and inorganic antibacterial agents are usually used. Organic antibacterial agents have good antibacterial effects, but they are easy to disperse in plastics, but their lifespan is short, and there are toxicity and safety problems, which will cause microbial resistance, chemical Compared with organic antibacterial materials, inorganic nano antibacterial materials have the advantages of high safety, strong durability, stable antibacterial performance and good heat resistance.

Method used

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  • Inorganic nano antibacterial thermoplastic elastomer and preparation method thereof

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preparation example Construction

[0028] The invention discloses an inorganic nano antibacterial thermoplastic elastomer and a preparation method thereof. A kind of inorganic nano antibacterial thermoplastic elastomer, by mass percentage, comprises following material:

[0029] SEBS 15~30%

[0030] Rubber filling oil 10~30%

[0031] Polypropylene 10-25%

[0032] Inorganic nano antibacterial powder 1~2%

[0033] Coupling agent 0.1~0.5%

[0034] Surfactant 0.1~0.5%

[0035] Other additives 0-2%.

[0036] In this technical solution, the SEBS is selected from one or more of American Kraton G1651, 1654, Taiwan TSRC's 3152, 6151, and Yueyang Petrochemical's YH503. The rubber extender oil is one or a mixture of naphthenic oil and paraffin oil. The polypropylene is selected from one or more of homopolymerization and copolymerization polypropylene. The inorganic nano-antibacterial powder is one or a mixture of nano-silver powder or nano-zinc oxide powder. The coupling agent is one or more of silane coupling age...

Embodiment 1

[0045] (1) Put the nano-zinc oxide powder in an electrothermal constant temperature blast drying oven, control the temperature at 110°C, dry for 2 hours, weigh 200g of nano-zinc oxide powder and put it in a 5L high-speed mixer, and drop 10g of silane coupling agent at the same time Put it into a high-speed mixer, the stirring speed is 1000r / min, after continuous stirring for 10min, discharge the material for later use.

[0046] (2) Weigh 24g of the material in step (1), add 973.6g of naphthenic oil, add Aerosol OT-75 2.4g, stir at high speed for 30min, stirring speed 800r / min, obtain the naphthenic oil dispersion of nano-zinc oxide liquid.

[0047](3) Take by weighing 875g Kraton SEBSG1651 and put it into a high-speed mixer, take by weighing 1000g of the dispersion liquid of step (2) and add in Kraton SEBSG1651 while stirring, fully stir and mix, the stirring speed is 600r / min, and the stirring time is 5min, then Stand still for 12 hours, fully absorb oil, and prepare SEBS wi...

Embodiment 2

[0051] (1) Put the nano-zinc oxide powder in an electrothermal constant temperature blast drying oven, control the temperature at 110°C, and dry it for 2 hours, weigh 200g of nano-zinc oxide powder and place it in a 5L high-speed mixer, and drop 10g of silane coupling agent at the same time Put it into a high-speed mixer, the stirring speed is 1000r / min, after continuous stirring for 10min, discharge the material for later use.

[0052] (2) Take by weighing 36g of the material in step (1), add in 960.4g of naphthenic oil, add Aerosol OT-753.6g, stir at high speed for 30min, stirring speed 800r / min, obtain the naphthenic oil dispersion of nano-zinc oxide .

[0053] (3) Take by weighing 875g Kraton SEBSG1651 and put it into a high-speed mixer, take by weighing 1000g of the dispersion liquid of step (2) and add in Kraton SEBSG1651 while stirring, fully stir and mix, the stirring speed is 600r / min, and the stirring time is 5min, then Stand still for 12 hours, fully absorb oil, an...

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Abstract

The invention discloses inorganic nano antibacterial thermoplastic elastomer and a preparation method thereof. The antibacterial thermoplastic elastomer is prepared from the following ingredients in mass percent: 15 to 30% of SEBS, 10 to 30% of rubber filling oil, 10 to 25% of polypropylene, 1 to 2% of inorganic nano antibacterial powder, 0.1 to 0.5% of coupling agent, 0.1 to 0.5% of surface active agent and 0 to 2% of other additives. The inorganic nano antibacterial thermoplastic elastomer disclosed by the invention is a material having the advantages of excellent antibacterial effect, highstrength, high rebound resilience, injection molding characteristic, strong antibacterial capacity, wide antibacterial range, safety and no toxicity to the human body, no stimulation to the skin, no allergenicity, durability, effectiveness, no attenuation or failure in a short time, environmental friendliness, no toxicity, safety and wide application range.

Description

technical field [0001] The invention relates to an inorganic nanometer antibacterial thermoplastic elastomer and a preparation method thereof, which is suitable for soft plastic products such as tool handles, sports equipment, daily necessities, children's toys, food contact appliances, and medical equipment. Background technique [0002] Plastic products that people come into contact with in daily life, especially the surface of soft plastic products such as daily necessities, food contact appliances, and medical equipment, may breed a variety of pathogenic bacteria and become infectious agents of diseases, thus affecting human health. threatening. For antibacterial, antibacterial plastics prepared by organic antibacterial agents and inorganic antibacterial agents are usually used. Organic antibacterial agents have good antibacterial effects, but they are easy to disperse in plastics, but their lifespan is short, and there are toxicity and safety problems, which will cause ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L53/02C08L91/00C08K9/06C08K3/22C08K9/12C08K3/08
CPCC08K2003/0806C08K2003/2296C08K2201/011C08L23/12C08L23/14C08L2205/03C08L53/025C08L91/00C08K9/06C08K3/22C08K9/12C08K3/08
Inventor 李浪陈鹏张伟金恋
Owner 倍肯(浙江)科技发展有限公司
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