Preparation method of powder containing nano-antibacterial elements
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A powder and element technology is applied in the field of preparation of nanometer antibacterial element powder, which can solve the problems of difficult process and high cost, and achieve the effects of simple process, low cost and low production cost.
Pending Publication Date: 2021-04-06
深圳市矽谷溅射靶材有限公司
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Problems solved by technology
However, the Ag and Cu powders used now are all ordinary size powders (micron scale), and it is difficult to prepare nano Ag and Cu powders, and the cost is also high.
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specific Embodiment 1
[0071] Nano-silver particles were deposited on stainless steel powder by magnetron sputtering to prepare nano-silver antibacterial stainless steel powder
[0072] 1) Target selection: choose a columnar silver magnetron sputtering target, and use intermediate frequency magnetron sputtering;
[0073] 2) Powder loading: Put 20 kg of stainless steel powder into the drum connected to the bias negative electrode, rotate the drum, and check the movement of the powder: no spillage, no sticking to the wall of the cylinder;
[0074] 3) Vacuuming and heating: close the furnace door, vacuuming is better than 6.6x10 -3 Pa, while vacuuming and heating, until 200 degrees Celsius, let the powder moisture desorb, improve fluidity, and not easy to agglomerate;
[0075] 4) Glow ion bombardment cleaning: vacuuming is better than 6.6x10 -3 Pa, fill with argon gas, up to 6Pa, apply bias voltage -600V, generate glow discharge, bias current 4A, ion bombardment for 15 minutes, purify the powder;
...
Embodiment 2
[0079] Nano silver particles were deposited on zirconium phosphate powder by magnetron sputtering to prepare nano silver antibacterial zirconium phosphate powder
[0080] 1) Target selection: choose a columnar silver magnetron sputtering target, and use intermediate frequency magnetron sputtering.
[0081] 2) Powder loading: Put 10 kg of zirconium phosphate powder into the drum connected to the bias negative electrode, rotate the drum, and check the movement of the powder: no spillage, no sticking to the wall of the drum.
[0082] 3) Vacuuming and heating: close the furnace door, vacuuming is better than 6.6x10 -3 Pa, while vacuuming and heating, up to 150 degrees Celsius, to desorb the moisture of the powder, improve the fluidity and prevent agglomeration.
[0083] 4) Glow ion bombardment cleaning: vacuuming is better than 6.6x10 -3 Pa, fill with argon gas, up to 6Pa, apply bias voltage -600V, generate glow discharge, bias current 2A, ion bombardment for 10 minutes, purify ...
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Abstract
The invention discloses a preparation method of powder containing nano-antibacterial elements. According to the preparation method, a clad layer or particles of the nano-antibacterial elements are deposited on powder by adopting a physical vapor deposition (PVD) method. Preferably, a discontinuous clad layer or particles of nano-silver and / or nano-copper are deposited on stainless steel powder through an ion plating method, wherein a roller externally connected with a negative electrode of a bias power supply is arranged in a vacuum coating cabin, the stainless steel powder is contained in the roller, the roller is rotated, and the stainless steel powder located at the bottom of the roller is turned without stop; and at least one magnetron sputtering target is arranged above the stainless steel powder to sputter nano-silver and / or nano-copper particles downwards towards the turned stainless steel powder, and the stainless steel powder, which a discontinuous plating layer or particles of nano-silver or nano-copper or nano-silver-copper adhere to, is generated. The preparation method is simple in process and low in cost.
Description
technical field [0001] The invention relates to the deposition of nano-scale silver, copper, zinc oxide and the like on various powders by physical vapor deposition technology to prepare nano-antibacterial powders, in particular to a preparation method of powders containing nano-antibacterial elements. Background technique [0002] Antibacterial stainless steel is a kind of structural / functional integrated material with antibacterial effect. Antibacterial stainless steel can be used as a structural material like ordinary stainless steel, and has decorative and beautifying functions, as well as strong antibacterial function. Antibacterial stainless steel is the earliest industrialized antibacterial metal village material. [0003] Stainless steel contains antibacterial Ag, Cu, Zn and other elements, which endow it with antibacterial function. The antibacterial mechanism of antibacterial stainless steel is: the fine particles of antibacterial elements such as Ag and Cu in sta...
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