CN104944957A - Wear-resistant ceramic bowl and preparation method thereof - Google Patents

Abstract

The present invention discloses a wear-resistant ceramic bowl and a preparation method thereof. The wear-resistant ceramic bowl is made of the following raw materials in weight part: 23-37 parts of corundum, 18-29 parts of perlite tailings, 15-25 parts of bauxitic clay, 13-22 parts of bentonite, 9-16 parts of natural oilstones, 16-24 parts of calcite, 5-10 parts of chromium carbide, 8-12 parts of zirconium nitride, 5-10 parts of anhydrous sodium silicate, 3-6 parts of sodium tripolyphosphate, 2-4 parts of diacetyl tartaric acid monoglyceride/diglyceride, 4.5-6.5 parts of hydroxypropyl guar gum, and 5-8 parts of nano-antibacterial powders. According to the invention, the corundum and the natural oilstones are compounded with the perlite tailings, the calcite, the bauxite and other minerals. In this way, the obtained ceramic bowl is not only high in strength and hardness, but also excellent in oxidation resistance, high-temperature resistance and wear resistance. At the same time, due to the arrangement of the chromium carbide and the zirconium nitride, the thermal stability, the corrosion resistance and the wear resistance of the ceramic bowl are significantly improved. The ceramic bowl is high in strength, durable, not easy to crack, resistant to high temperature, wear-resistant, oxidation-resistant, corrosion-resistant and long in service life.

Description

A kind of wear-resistant ceramic bowl and preparation method thereof

Technical field

The present invention relates to a kind of wear-resistant ceramic bowl and preparation method thereof, belong to stupalith field.

Background technology

Bowl is closely related as important component part and the daily life of life, is indispensable of paramount importance apparatus in diet activity, especially in China's use very extensively, is the requisite in Chinese ware.China from ancient times just the raw material such as useful china clay, quartz sand fire meticulous ceramic bowl, use till today as foods utensil and because of its practicality and taste.Even to this day, due to the progress of science and technology, many materials that can replace china bowl are there is, as stainless steel, plastics etc., compared with the bowl made with these materials, traditional ceramics bowl also exists the shortcoming worn no resistance, easily occur in use procedure wearing away the problem damaged, also there is the shortcoming of antibacterial bacteriostatic performance difference in ceramic bowl in the market in addition, easily grows a large amount of bacterium, be unfavorable for healthy diet and safety.Therefore, a kind of wear-resistant ceramic bowl of exploitation is badly in need of, to improve the performance of ceramic bowl.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, a kind of wear-resistant ceramic bowl and preparation method thereof is provided.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of wear-resistant ceramic bowl, is made up of the raw material of following weight part: silicon carbide 23-37, pearlite tail sand 18-29, bauxitic clay 15-25, wilkinite 13-22, natural oil stone 9-16, calcite 16-24, chromium carbide 5-10, zirconium nitride 8-12, anhydrous sodium metasilicate 5-10, tripoly phosphate sodium STPP 3-6, diacetyl tartarate list (two) glyceryl ester 2-4, hydroxypropylguar gum 4.5-6.5, nano-antibacterial powder 5-8;

The preparation method of described nano-antibacterial powder is as follows: (1) gets the raw material of following weight part: jade powder 4-8, oyster shell whiting 3-6, tetrabutyl titanate 10-15, dehydrated alcohol 50-60, distilled water 2-3, Glacial acetic acid 8-12, Silver Nitrate 4-6, cupric nitrate 3-5; (2) tetrabutyl titanate is mixed with the dehydrated alcohol accounting for alcohol total amount 55-65%, magnetic agitation 20-30min, obtain mixed liquor A; (3) distilled water, Glacial acetic acid and remaining dehydrated alcohol are mixed, magnetic agitation 15-25min, obtains mixed liquid B; (4) under magnetic stirring, mixed liquid B is dropwise joined in mixed liquor A, after dripping, add jade powder and oyster shell whiting, ultrasonic agitation 0.5-1h, at room temperature leave standstill 24-48h again, by the gel dry 10-15h at 70-80 DEG C obtained, grind into powder; (5) above-mentioned obtained powder is put into retort furnace, at 450-550 DEG C, thermal treatment 1-2h, cools to normal temperature with the furnace, pulverizes, sieves and obtain required nano-antibacterial powder.

A preparation method for wear-resistant ceramic bowl, comprises the following steps:

(1) get silicon carbide, pearlite tail sand, bauxitic clay, wilkinite, natural oil stone, calcite mix, pulverize, be soaked in 15% aqueous hydrogen peroxide solution of 4-7 times amount after crossing 150-200 mesh sieve, soak 1-2h, then under the rotating speed of 1500-2000r/min, grind 10-15min with colloidal mill, slurries after grinding are left standstill 0.5-1h at lower than the temperature of-15 DEG C, be placed in ultrasonication 30-40min under normal temperature again, filter, washes clean, dry, stand-by;

(2) powder getting chromium carbide, zirconium nitride and step (1) obtained mixes, add appropriate water making beating and make the slurries that concentration is 50-60%, UV-irradiation 2-3h, add remaining raw material again, heating in water bath is to 75-85 DEG C, under the rotating speed of 1500-2000r/min, grind 10-15min, then the slurry after grinding is put into mould by vacuum pressure injection forming, forming pressure is 25-30MPa;

(3) green compact that step (2) is obtained are carried out drying at the temperature of 55-65 DEG C, be dried to blank water content lower than 3%;

(4) be placed in HIP sintering stove by dry body obtained above and process, using nitrogen as pressure medium, pressurization 100-120MPa, is warming up to 1160-1230 DEG C, and insulation 1.5-2.5h, cools to normal temperature with the furnace;

(5) colored drawing is carried out to the dry body after above-mentioned HIP sintering, then carry out glazing, then carry out gas pressure sintering process: first at the H of 3-4MPa ₂830-870 DEG C is warming up to, insulation 1-2h under atmosphere, then at the N of 2-3MPa ₂be warming up to 1150-1200 DEG C under atmosphere, insulation 2-3h, is finally cooled to 720-780 DEG C under vacuum conditions, and insulation 0.5-1h, furnace cooling normal temperature, packaging gets product.

Above-mentioned nano-antibacterial powder is with jade powder, oyster shell whiting for carrier, with Ag ⁺, Cu ²⁺for the modified Nano TiO that doping particle prepares ₂powder, safety and environmental protection, nontoxic, tasteless, nonirritant, not only there is excellent broad spectrum antibacterial performance, to comprise bacterium, fungi, mycoplasma multiple pathogens have and well suppress or killing action, sterilizing rate reaches more than 98%, also has good anti-ultraviolet aging and thermotolerance, does not decompose, non-volatile, nondiscoloration, to never degenerate under high temperature and intensive ultraviolet.

Beneficial effect of the present invention:

The mutual compound of mineral such as silicon carbide, natural oil stone and pearlite tail sand, calcite, bauxitic clay is adopted in the present invention, ceramic bowl is not only made to have very high intensity and hardness, also there is excellent oxidation-resistance, high thermal resistance and wear resistance, the chromium carbide simultaneously added, zirconium nitride, significantly can improve the thermostability of ceramic bowl, erosion resistance and wear resistance.It is high that the ceramic bowl that the present invention obtains has intensity, sturdy and durable, not easily broken, high temperature resistant, and high-wearing feature is anti-oxidant, corrosion-resistant, the advantages such as long service life.

Embodiment

A kind of wear-resistant ceramic bowl, is made up of the raw material of following weight (kg): silicon carbide 34, pearlite tail sand 26, bauxitic clay 20, wilkinite 19, natural oil stone 12, calcite 19, chromium carbide 7, zirconium nitride 10, anhydrous sodium metasilicate 7, tripoly phosphate sodium STPP 4, diacetyl tartarate list (two) glyceryl ester 3, hydroxypropylguar gum 5.5, nano-antibacterial powder 6;

The preparation method of described nano-antibacterial powder is as follows: (1) gets the raw material of following weight (kg): jade powder 8, oyster shell whiting 6, tetrabutyl titanate 15, dehydrated alcohol 60, distilled water 3, Glacial acetic acid 12, Silver Nitrate 6, cupric nitrate 5; (2) tetrabutyl titanate is mixed with the dehydrated alcohol accounting for alcohol total amount 65%, magnetic agitation 30min, obtain mixed liquor A; (3) distilled water, Glacial acetic acid and remaining dehydrated alcohol are mixed, magnetic agitation 25min, obtains mixed liquid B; (4) under magnetic stirring, mixed liquid B is dropwise joined in mixed liquor A, add jade powder and oyster shell whiting after dripping, ultrasonic agitation 1h, more at room temperature leave standstill 48h, by the gel dry 15h at 80 DEG C obtained, grind into powder; (5) above-mentioned obtained powder is put into retort furnace, at 550 DEG C, thermal treatment 1h, cools to normal temperature with the furnace, pulverizes, sieves and obtain required nano-antibacterial powder.

A preparation method for wear-resistant ceramic bowl, comprises the following steps:

(1) get silicon carbide, pearlite tail sand, bauxitic clay, wilkinite, natural oil stone, calcite mix, pulverize, be soaked in 15% aqueous hydrogen peroxide solution of 6 times amount after crossing 200 mesh sieves, soak 1.5h, then under the rotating speed of 1800r/min, grind 12min with colloidal mill, slurries after grinding are left standstill 40min at lower than the temperature of-15 DEG C, be placed in ultrasonication 35min under normal temperature again, filter, washes clean, dry, stand-by;

(2) powder getting chromium carbide, zirconium nitride and step (1) obtained mixes, add appropriate water making beating and make the slurries that concentration is 55%, UV-irradiation 2-3h, add remaining raw material again, heating in water bath to 80 DEG C, under the rotating speed of 1600r/min, grind 12min, then the slurry after grinding is put into mould by vacuum pressure injection forming, forming pressure is 27MPa;

(3) green compact that step (2) is obtained are carried out drying at the temperature of 60 DEG C, be dried to blank water content lower than 3%;

(4) be placed in HIP sintering stove by dry body obtained above and process, using nitrogen as pressure medium, pressurization 110MPa, is warming up to 1210 DEG C, and insulation 2h, cools to normal temperature with the furnace;

(5) colored drawing is carried out to the dry body after above-mentioned HIP sintering, then carry out glazing, then carry out gas pressure sintering process: first at the H of 3.5MPa ₂860 DEG C are warming up to, insulation 1.5h under atmosphere, then at the N of 2.5MPa ₂be warming up to 1180 DEG C under atmosphere, insulation 2h, is finally cooled to 770 DEG C under vacuum conditions, and insulation 0.5h, furnace cooling normal temperature, packaging gets product.

The ceramic bowl salient features that above-described embodiment is produced is as shown in the table:

Project	Unit	Detected result
			Strength at break	N	1439
The modulus of rupture	MPa	34
			Normal temperature abrasion loss	3cm	2.9
Sterilizing rate	％	98.8

Claims (2)

1. a wear-resistant ceramic bowl, it is characterized in that, be made up of the raw material of following weight part: silicon carbide 23-37, pearlite tail sand 18-29, bauxitic clay 15-25, wilkinite 13-22, natural oil stone 9-16, calcite 16-24, chromium carbide 5-10, zirconium nitride 8-12, anhydrous sodium metasilicate 5-10, tripoly phosphate sodium STPP 3-6, diacetyl tartarate list (two) glyceryl ester 2-4, hydroxypropylguar gum 4.5-6.5, nano-antibacterial powder 5-8;

The preparation method of described nano-antibacterial powder is as follows: (1) gets the raw material of following weight part: jade powder 4-8, oyster shell whiting 3-6, tetrabutyl titanate 10-15, dehydrated alcohol 50-60, distilled water 2-3, Glacial acetic acid 8-12, Silver Nitrate 4-6, cupric nitrate 3-5; (2) tetrabutyl titanate is mixed with the dehydrated alcohol accounting for alcohol total amount 55-65%, magnetic agitation 20-30min, obtain mixed liquor A; (3) distilled water, Glacial acetic acid and remaining dehydrated alcohol are mixed, magnetic agitation 15-25min, obtains mixed liquid B; (4) under magnetic stirring, mixed liquid B is dropwise joined in mixed liquor A, add jade powder and oyster shell whiting after dripping, ultrasonic agitation 0.5-1h, more at room temperature leave standstill 24-48h, by the gel dry 10-15h at 70-80 DEG C obtained, grind into powder; (5) above-mentioned obtained powder is put into retort furnace, at 450-550 DEG C, thermal treatment 1-2h, cools to normal temperature with the furnace, pulverizes, sieves and obtain required nano-antibacterial powder.

2. a preparation method for wear-resistant ceramic bowl as claimed in claim 1, is characterized in that comprising the following steps:

(1) get silicon carbide, pearlite tail sand, bauxitic clay, wilkinite, natural oil stone, calcite mix, pulverize, be soaked in 15% aqueous hydrogen peroxide solution of 4-7 times amount after crossing 150-200 mesh sieve, soak 1-2h, then under the rotating speed of 1500-2000r/min, grind 10-15min with colloidal mill, slurries after grinding are left standstill 0.5-1h at lower than the temperature of-15 DEG C, be placed in ultrasonication 30-40min under normal temperature again, filter, washes clean, dry, stand-by;

(2) powder getting chromium carbide, zirconium nitride and step (1) obtained mixes, add appropriate water making beating and make the slurries that concentration is 50-60%, UV-irradiation 2-3h, add remaining raw material again, heating in water bath is to 75-85 DEG C, under the rotating speed of 1500-2000r/min, grind 10-15min, then the slurry after grinding is put into mould by vacuum pressure injection forming, forming pressure is 25-30MPa;

(3) green compact that step (2) is obtained are carried out drying at the temperature of 55-65 DEG C, be dried to blank water content lower than 3%;

(4) be placed in HIP sintering stove by dry body obtained above and process, using nitrogen as pressure medium, pressurization 100-120MPa, is warming up to 1160-1230 DEG C, and insulation 1.5-2.5h, cools to normal temperature with the furnace;

(5) colored drawing is carried out to the dry body after above-mentioned HIP sintering, then carry out glazing, then carry out gas pressure sintering process: first at the H of 3-4MPa ₂830-870 DEG C is warming up to, insulation 1-2h under atmosphere, then at the N of 2-3MPa ₂be warming up to 1150-1200 DEG C under atmosphere, insulation 2-3h, is finally cooled to 720-780 DEG C under vacuum conditions, and insulation 0.5-1h, furnace cooling normal temperature, packaging gets product.