CN102631119A

CN102631119A - Antibacterial ceramic ware and manufacturing method thereof

Info

Publication number: CN102631119A
Application number: CN2012101089259A
Authority: CN
Inventors: 耿良玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-06
Filing date: 2012-04-06
Publication date: 2012-08-15

Abstract

The invention discloses an antibacterial ceramic ware and a manufacturing method thereof. The ware wall of the antibacterial ceramic ware is at a micro-pore state and a micro-pore is naked; the micro-pore contains AgO solid grains. The manufacturing method comprises the following steps of: preparing a silver nitrate solution with a suitable concentration; coating the solution on the ware wall of the inner cavity of the ceramic ware so that the silver nitrate solution penetrates into the micro-pore of the ware wall; drying the ceramic ware; preparing a sodium hydroxide solution with a suitable concentration, wherein the sodium hydroxide solution with a suitable concentration is utilized as a first auxiliary solution; preparing a sodium persulfate solution with a suitable concentration, wherein the sodium persulfate solution with a suitable concentration is utilized as a second auxiliary solution; mixing the first auxiliary solution and the second auxiliary solution at the volume ratio of 1:1 to obtain a mixed solution; pouring the mixed solution into the dried ceramic ware and keeping the heat within a temperature range of 25-55 DEG C for 1-8 hours; and finally, drying the surface of the inner cavity of the cleaned ceramic ware to prepare the antibacterial ceramic ware. The antibacterial ceramic ware has better antibacterial performance; and the quality guarantee period can be prolonged by using the ware to contain edible liquid or edible solid materials.

Description

Antibacterial pottery and manufacturing approach thereof

Technical field

The present invention relates to antibacterial pottery.

Background technology

Purple ceramic cup is a kind of traditional high-quality appliance for infusing tea, also is a kind of pottery, the countless tiny micropore that distributing on its wall, and because of not glazing, so permeable watertight, promptly the micropore on the wall is exposed.Yet these tiny micropores just are easy to hide and receive bacterium, and when being used for the splendid attire cold tea, the bacterium in the micropore will enter in the tea, and these bacteriums are just directly drunk in the human body when people drink this cold tea, and are extremely harmful to health.Purple ceramic cup as place a period of time need not, must use drier, perhaps adopt other method that wall is kept dry state, otherwise will find that glass inwall is mouldy.Why the cup inwall can be mouldy, is exactly the prolific result of bacterium.

So, if can carry out modification to the cup of purple ceramic cup, make cup itself harmless to human non-toxic, can not produce peculiar smell yet, can suppress bacterial reproduction or kill bacteria again simultaneously, then will be a technological progress highly significant.

Summary of the invention

Technical problem to be solved by this invention provides a kind of antibacterial pottery, and the wall of these vessel has sterilization or bacteria resistance function, is used for edible liquids such as splendid attire such as drinking water, tea, beverage, also can be used for splendid attire such as edible solid materials such as rice, soya beans.

In order to solve the problems of the technologies described above, technical scheme provided by the present invention is: a kind of antibacterial pottery, and the wall of pottery is the micropore state, and micropore is exposed, and promptly the wall surface does not have glazing, contains the AgO solid in the micropore.

The present invention also provides the manufacturing approach of said antibacterial pottery, and it comprises:

Step 1. is dried with the surfaces externally and internally of 50 ℃～100 ℃ the clean pottery of clean hot water again, and the wall of this pottery is the micropore state, and micropore is exposed;

Step 2. compound concentration is the liquor argenti nitratis ophthalmicus of 0.15mol/L;

Step 3. configuration concentration is that sodium hydroxide solution or the potassium hydroxide solution of 0.6mol/L～5.6mol/L is as first assisted solution; Configuration concentration is that sodium peroxydisulfate solution or the potassium persulfate solution of 0.15mol/L～0.8mol/L is as second assisted solution again; Again first assisted solution and second assisted solution are mixed by 1 to 1 volume ratio, obtain mixed liquor;

Step 4. is coated in the inner surface of said pottery wall with the liquor argenti nitratis ophthalmicus that configures under stirring, make liquor argenti nitratis ophthalmicus to the inner micropore permeation of wall, oven dry then;

The said mixed liquor that step 5. will configure is poured in the said pottery, and under 25 ℃～55 ℃ temperature conditions, is incubated 1～8 hour;

Step 6. is poured out the mixed liquor that reacted in the said pottery, cleans the vessel inner surface with clean water again, then oven dry.

Because all not glazings of inside and outside wall surface of said pottery; The surface exposure micropore when the vessel inwall to drying regime applies liquor argenti nitratis ophthalmicus, can be extruded the air in the wall internal capillary from the micropore of vessel outer wall; So; More liquor argenti nitratis ophthalmicus is penetrated in the inner micropore of wall, thereby can in micropore, generate more AgO solid, strengthen antibacterial or sterilizing function.

The shape of said pottery is gyalectiform, perhaps is peviform, perhaps is bowl-shape, perhaps is ampuliform, perhaps is tubbiness.

The raw material of said pottery can adopt materials such as natural rock, ore and clay, like boccaro, quartz etc., also can adopt artificial synthetic material to make raw material

Said method can directly generate Ag in the micropore of pottery ₄O ₄Solid particle, particle size are nanoscale, Ag ₄O ₄Can be abbreviated as AgO, reaction equation is following:

4AgNO ₃+8NaOH+2Na ₂S ₂O ₈→Ag ₄O ₄↓+4Na ₂SO ₄+4NaNO ₃+4H ₂O

Perhaps 4AgNO ₃+ 8KOH+2K ₂S ₂O ₈→ Ag ₄O ₄↓+4K ₂SO ₄+ 4KNO ₃+ 4H ₂O

Because of above-mentioned reaction is in the surface of micropore ceramics and micropore, to carry out simultaneously, so in the surface of micropore ceramics and micropore, all can have the AgO solid to produce and floating on pottery.When cleaning the vessel inner surface, can only lip-deep AgO be washed, the AgO solid in the micropore then can not be cleaned, and must remain in the micropore; While Na ₂SO ₄And NaNO ₃Perhaps K ₂SO ₄And KNO ₃These salts substances can both be dissolved in the water with the form of ion, so when cleaning the vessel inner surface, all can be cleaned totally at an easy rate, can not pollute vessel.

AgO is a kind of to multiple malignant bacteria and virus, and the solid matter of fine killing effect is all arranged like streptococcus fecalis, gram negative and positive bacterium, Escherichia coli, staphylococcus aureus, AIDS virus etc.In addition, AgO is below 100 ℃, and chemical property is stable, be difficult for decomposing, and the drinking water of pottery (like dark-red enameled pottery) institute splendid attire, its maximum temperature can not surpass 95 ℃ usually, so can satisfy instructions for use fully.

The present invention has following beneficial effect:

1. the antibacterial pottery of the present invention has the excellent antibiotic performance, can extend the shelf life with this vessel splendid attire edible liquid or edible solid material.

2. the preparation method of the antibacterial pottery of the present invention can obtain almost 100% ground utilization with being worth higher liquor argenti nitratis ophthalmicus; Also can repeatedly reuse and be worth other lower medicine; So method of the present invention is with low cost, help applying of present technique.

3. technology of the present invention can be made into antibacterial dark-red enameled pottery, significantly improves the bacteriostasis property of dark-red enameled pottery, makes dark-red enameled pottery promptly be used in the splendid attire cold tea, can guarantee that also the cold tea long period undergoes no deterioration, thereby has guaranteed dark-red enameled pottery user's the hygiene and health of drinking tea.

Description of drawings

For content of the present invention is expressly understood more easily,, the present invention is done further detailed explanation, wherein below according to specific embodiment and combine accompanying drawing

Fig. 1 is the structural representation of embodiments of the invention 1.

Label in the accompanying drawing is:

Antibacterial pottery 1, the AgO solid particle 2 in the micropore, inner surface 3.

The specific embodiment

Embodiment 1

See Fig. 1, antibacterial pottery 1 is the wide-mouth ampuliform, and its wall is the micropore state, and micropore is exposed, contains AgO solid particle 2 in the micropore, and its manufacturing step is following:

Step 1. is dried with the surfaces externally and internally of 50 ℃～80 ℃ the clean pottery of clean hot water then, and the wall of this pottery is the micropore state, and micropore is exposed;

Step 3. configuration concentration is that the sodium hydroxide solution of 0.6mol/L～5.6mol/L is as first assisted solution; Configuration concentration is that the sodium peroxydisulfate solution of 0.15mol/L～0.8mol/L is as second assisted solution again; Again first assisted solution and second assisted solution are mixed by 1 to 1 volume ratio, obtain mixed liquor;

Step 4. is coated in the inner surface 2 of said pottery wall with the liquor argenti nitratis ophthalmicus that configures under stirring, make liquor argenti nitratis ophthalmicus to the inner micropore permeation of wall, oven dry then;

The said mixed liquor that step 5. will configure is poured in the said pottery, and under 25 ℃～45 ℃ temperature conditions, is incubated 1～8 hour;

Step 6. is poured out the mixed liquor that reacted in the said pottery, cleans the inner surface 2 of said pottery again with clean water, with said pottery oven dry, promptly processes antibacterial pottery 1 then.

Said method can directly generate the AgO solid particle in the micropore of pottery.

Add the normal temperature drink water to antibacterial pottery that makes by embodiment 1 method 1 and conventional ceramic vessel respectively; And all be placed on both in the insulating box; Temperature is remained on 35 ℃; After leaving standstill 24 hours, detect the total plate count of drink water in two kinds of potteries more respectively, result such as following table:

Test shows that the total plate count measured value of the drinking water in the antibacterial pottery is much smaller than the limit value of standard code, and the fungistatic effect of the antibacterial pottery of this explanation the inventive method preparation is remarkable.Its antifungal mechanism is: if there is bacterium in the drinking water, then because drinking water is a liquid, always have molecular thermalmotion; Can impel bacterial migration under the effect of molecular thermalmotion to the wall of pottery, in addition, bacterium is the organism that lives; Itself also can move on the wall of pottery, and gets in the micropore of wall, owing to have the AgO solid particle in the micropore of wall; Bacterium is run into the AgO solid particle and will be killed; So can't in micropore, survive and breed, thereby the bacterial number in the drinking water is just by effective inhibition.

And the conventional ceramic vessel, because of there not being bacteria resistance function, in a single day airborne bacterium gets into pottery; Bacterium just enters into the drinking water in the pottery; Even one skilled in the art will appreciate that drink water, also always contain a certain amount of required nutrients of bacterial reproduction that supplies; In addition,, just do not suppress vegetative medicine (for example chlorine residue) naturally yet, be inevitable so the bacterium in the drinking water is more and more since be drink water.

Above-described specific embodiment; The present invention has been carried out further explain, and institute it should be understood that the above is merely specific embodiment of the present invention; Be not limited to the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be encompassed in the claim scope of the present invention.

Claims

1. antibacterial pottery is characterized in that: the wall of antibacterial pottery is the micropore state, and micropore is exposed, contains the AgO solid in the micropore.

2. according to the described antibacterial pottery of claim 1, it is characterized in that: the shape of said antibacterial pottery is gyalectiform, perhaps is peviform, perhaps is bowl-shape, perhaps is ampuliform, perhaps is tubbiness.

3. according to claim 1 or 2 described antibacterial potteries, it is characterized in that the manufacturing step of antibacterial pottery comprises:

Step 1. is dried with the surfaces externally and internally of 50 ℃～100 ℃ the clean pottery of clean hot water then, and the wall of this pottery is the micropore state, and micropore is exposed;

Step 6. is poured out the mixed liquor that reacted in the said pottery, cleans the inner surface of said pottery again with clean water, then with said pottery oven dry.