CN105481347A

CN105481347A - Novel special ceramic material and preparation method thereof

Info

Publication number: CN105481347A
Application number: CN201510850447.2A
Authority: CN
Inventors: 曾丽
Original assignee: Chengdu Deshan Technology Co Ltd
Current assignee: Shanghai Feng Feng Biotechnology Co., Ltd.
Priority date: 2015-11-30
Filing date: 2015-11-30
Publication date: 2016-04-13
Anticipated expiration: 2035-11-30
Also published as: CN105481347B

Abstract

The invention discloses a novel special ceramic material. The material is prepared by the following raw materials in parts by weight: 40-50 parts of red clay, 1-3 parts of albite, 5-7 parts of nanometer aluminium oxide, 1-3 parts of nickel oxide, 1-3 parts of zinc oxide, 5-7 parts of niobium pentoxide, 5-7 parts of boron nitride, 5-7 parts of wollastonite, 3-4 parts of sodium zirconate, and 5-7 parts of an auxiliary agent. The novel special ceramic material has the advantages of high strength, good resistance to corrosion and oxidation resistance, good toughness, high temperature resistance, substantially improved antifriction capability of the surface, scaling resistance of the surface, cleaning convenience, and increased service life; at the same time, prior ceramic preparation technology is optimized, suitable technological parameters are selected, so that performance of the material is more stable.

Description

A kind of new special stupalith and preparation method thereof

Technical field

The present invention relates to stupalith field, particularly a kind of new special stupalith and preparation method thereof.

Background technology

Current stupalith development rapidly, and is widely used in every field, as metallic substance, isolator, pipeline etc., but there is following problem in existing pottery: as fragility is too large, intensity is little, and temperature capacity is little etc., and working method cost is large, product benefit is low, and therefore need research wear resistance good, hardness is high, good toughness, vibration resistance, heat-resisting, the corrosion-resistant stupalith waiting excellent performance.

Summary of the invention

Goal of the invention of the present invention is: for above-mentioned Problems existing, and provide a kind of new special stupalith, this pottery not only intensity is high, resistance to corrosion and resistance of oxidation extremely strong, good toughness, high temperature resistant, and the rub resistance ability on its surface improves greatly, surface is less scaling, and easy cleaning, increases its work-ing life, simultaneously, by optimizing existing ceramic preparation technique, selecting suitable processing parameter, making the properties of new special stupalith more stable.

The technical solution used in the present invention is as follows: a kind of new special stupalith, described new special stupalith is made up of the raw material of following weight part: red clay 40-50 part, albite 1-3 part, nano level aluminium sesquioxide 5-7 part, nickel oxide 1-3 part, zinc oxide 1-3 part, Niobium Pentxoxide 5-7 part, boron nitride 5-7 part, wollastonite 5-7 part, sodium zirconate 3-4 part, auxiliary agent 5-7 part.

Further, described special addition agent is made up of the raw material of following weight part: nano-silicon nitride 0.8-1.2 part, nanometer boron fibre 0.6-0.9 part, silane coupling agent kh-5500.6-0.8 part, polyoxyethylene glycol 0.3-0.4, deionized water 20-25 part, kaolinite 12-17 part, titanium dioxide 5-7 part.

Further, the preparation method of described auxiliary agent is: pulverized by kaolinite, cross 40 mesh sieves, obtain kaolinite powder, polyoxyethylene glycol is added in deionized water, stir, kaolinite powder after sieving is added wherein, stir 20min, add silane coupling agent kh-550, stir 20min, obtain liquid A, titanium dioxide is pulverized, cross 40 mesh sieves, and nanometer silicon carbide then, nanometer boron fibre joins in liquid A together, stir 20min, filtration drying, 120 mesh sieves are crossed after pulverizing, under helium atmosphere, after calcining 3h at being heated to 820-830 DEG C, air cooling is to room temperature, then pulverize, cross 50 mesh sieves, obtain auxiliary agent.

Further, described new special stupalith is made up of the raw material of following weight part: red clay 45 parts, albite 2 parts, nano level aluminium sesquioxide 6 parts, nickel oxide 2 parts, 2 parts, zinc oxide, Niobium Pentxoxide 6 parts, boron nitride 6 parts, wollastonite 6 parts, sodium zirconate 3.2 parts, auxiliary agent 6.5 parts;

The component of described auxiliary agent is counted by weight: nano-silicon nitride 0.9 part, nanometer boron fibre 0.7 part, silane coupling agent kh-5500.65 part, polyoxyethylene glycol 0.36 part, deionized water 23 parts, 14 parts, kaolinite, titanium dioxide 6 parts;

Further, the present invention also comprises a kind of method preparing above-mentioned new special stupalith, comprises the following steps:

Step 1, red clay, albite, wollastonite, nano level aluminium sesquioxide and Niobium Pentxoxide to be mixed, then ball mill abrasive dust is put into, cross 230 mesh sieves, again auxiliary agent and boron nitride are sent into ball milling 18-20h in ball mill, add potassium hydroxide again, continue ball milling 2-3h, being washed to pH value is 7-8, filters and obtains powder;

Step 2, will filter the powder that obtains using helium as shielding gas, at 880-900 DEG C, calcine 4-6h, then air cooling is to room temperature, sends into ball mill abrasive dust, crosses 120 mesh sieves, obtains powder particle A;

Step 3, sodium zirconate, nickel oxide, zinc oxide and powder particle A mixed and stir, being heated to 980-990 DEG C, and calcining 1-3h, ball mill pulverizing, crossing 80 mesh sieves, obtain powder particle B;

Step 4, powder particle B to be mixed with the ratio of deionized water in 4:3, then put into ball mill ball milling 16-18h, then moulding, in the atmosphere of helium, 800-900 DEG C of temperature lower calcination 2h, then temperature is increased to 1200-1350 DEG C, calcining 4-5h, insulation 1-2h, last air cooling is to room temperature.

To the formation of its component and Action Specification as follows: red clay has good toughness, it is plastic that normal temperature meets water, micro-ly dry can to carve, half-driedly to press, absolutely dryly to grind, red clay burns to 900 DEG C and pottery can be become to fill water, burn to 1230 DEG C of then porcelain, can not absorb water completely and corrosion-and high-temp-resistant, join in pottery, the intensity of pottery can also be increased, improve the performance of rub resistance, and increase its work-ing life; Albite is as a kind of solvent materials in pottery, and the main porcelain that rises turns use into, and namely utilize the high temperature fusibility of sodium, reduce blank firing temperature, ex-colleague plays the effect of stable blank; Nano-aluminium oxide can improve the properties of pottery, the crystal grain of pottery, crystal boundary and the combination between them can be made all to be in nanometer level, the refinement number of grain boundaries of pottery is increased considerably, make the intensity of pottery, toughness and superplasticity greatly improve further, can ceramic sintering temperature be reduced; Zinc oxide, as a kind of important ceramic chemical industry flux raw material, has stronger fluxing action, can reduce the coefficient of expansion of pottery, improve its thermostability, and the machinery of pottery and electrical property can be made to improve; Niobium Pentxoxide in pottery as a kind of property-modifying additive; Boron nitride can improve the resistance to sudden heating of pottery, in rapid heat cycle situation, reduce the possibility of ceramic fracture, improve the thermostability of pottery, because boron nitride has the layered crystal structure being similar to graphite, also be just provided with physical and chemical performance like graphite-phase, make pottery electrical isolation, thermal expansivity and and most metals not infiltrate etc. in possess good performance; Nickel oxide can improve the corrosion resistance nature of pottery.

In the present invention, the effect of wollastonite is mainly reflected in the following aspects: one is reduce firing temperature, shorten firing period, traditional silicate ceramics mainly uses the Si-Al system raw materials such as quartz, feldspar, kaolinite, talcum, pyrophyllite, high temperature burns till the crystallisate phase mainly mullite of generation, add wollastonite, then can form Si-Al-Ca eutectic system, resultant phase mainly lime feldspar, just can realize sintering at a lower temperature, this wherein, wollastonite mainly plays the effect fluxing and reduce firing temperature.Meanwhile, because crystal form of grammite is pin column, the quick loss of moisture that can be in base substrate provides passage, thus accelerates drying rate, shortens drying cycle, enhances productivity; Two is reduce to burn till contraction and product defect, due to any fugitive constituents such as itself the not moisture and carbonates of wollastonite, does not produce gas in sintering process, greatly reduces the possibility that ceramic firing body produces gas hole defect, can significantly improve the quality of pottery; Three is reduce the thermal expansion in the wet swelling of base substrate and sintering process, and wollastonite itself does not absorb water, and can avoid the wet swelling of ceramic body, simultaneously, the thermal expansivity of wollastonite is little and linearly expand, and can reduce the thermal expansion of base substrate in sintering process, avoids producing expansion crack; Four is the physical strengths that can improve goods, and the rambling arrangement of wollastonite needle-like crystal forms pilotaxitic texture, by the melt institute consolidation that partial melting produces, can strengthen structural stability and the physical strength of sintered compact.

In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: not only intensity is high for new special stupalith of the present invention, resistance to corrosion and resistance of oxidation extremely strong, good toughness, high temperature resistant, and the rub resistance ability on its surface improves greatly, and surface is less scaling, simultaneously, by optimizing existing ceramic preparation technique, selecting suitable processing parameter, making the properties of new special stupalith more stable.

Embodiment

Below in conjunction with embodiment, the present invention is described in detail.

In order to make the object of invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

Embodiment one

A kind of new special stupalith, described new special stupalith is made up of the raw material of following weight part: red clay 45 parts, albite 2 parts, nano level aluminium sesquioxide 6 parts, nickel oxide 2 parts, 2 parts, zinc oxide, Niobium Pentxoxide 6 parts, boron nitride 6 parts, wollastonite 6 parts, sodium zirconate 3.2 parts, auxiliary agent 6.5 parts; The component of described auxiliary agent is counted by weight: nano-silicon nitride 0.9 part, nanometer boron fibre 0.7 part, silane coupling agent kh-5500.65 part, polyoxyethylene glycol 0.36 part, deionized water 23 parts, 14 parts, kaolinite, titanium dioxide 6 parts.

In the present embodiment, the preparation method of described auxiliary agent is: pulverized by kaolinite, cross 40 mesh sieves, obtain kaolinite powder, polyoxyethylene glycol is added in deionized water, stir, kaolinite powder after sieving is added wherein, stir 20min, add silane coupling agent kh-550, stir 20min, obtain liquid A, titanium dioxide is pulverized, cross 40 mesh sieves, and nanometer silicon carbide then, nanometer boron fibre joins in liquid A together, stir 20min, filtration drying, 120 mesh sieves are crossed after pulverizing, under helium atmosphere, after calcining 3h at being heated to 823 DEG C, air cooling is to room temperature, then pulverize, cross 50 mesh sieves, obtain auxiliary agent, its preparation method comprises the following steps:

Step 1, red clay, albite, wollastonite, nano level aluminium sesquioxide and Niobium Pentxoxide to be mixed, then ball mill abrasive dust is put into, cross 230 mesh sieves, again auxiliary agent and boron nitride are sent into ball milling 18.5h in ball mill, add potassium hydroxide again, continue ball milling 2.5h, being washed to pH value is 7.6, filters and obtains powder;

Step 2, will filter the powder that obtains using helium as shielding gas, at 890 DEG C, calcine 5h, then air cooling is to room temperature, sends into ball mill abrasive dust, crosses 120 mesh sieves, obtains powder particle A;

Step 3, sodium zirconate, nickel oxide, zinc oxide and powder particle A mixed and stir, being heated to 980-990 DEG C, and calcining 2h, ball mill pulverizing, crossing 80 mesh sieves, obtain powder particle B;

Step 4, powder particle B to be mixed with the ratio of deionized water in 4:3, then put into ball mill ball milling 16-18h, then moulding, in the atmosphere of helium, 800-900 DEG C of temperature lower calcination 2h, then temperature is increased to 1280 DEG C, calcining 4.5h, insulation 1.5h, last air cooling is to room temperature.

embodiment two

A kind of new special stupalith, described new special stupalith is made up of the raw material of following weight part: red clay 40 parts, albite 1 part, nano level aluminium sesquioxide 5 parts, nickel oxide 1 part, 1 part, zinc oxide, Niobium Pentxoxide 5 parts, boron nitride 5 parts, wollastonite 5 parts, sodium zirconate 3 parts, auxiliary agent 5 parts, described special addition agent is made up of the raw material of following weight part: nano-silicon nitride 0.8 part, nanometer boron fibre 0.6 part, silane coupling agent kh-5500.6 part, polyoxyethylene glycol 0.3 part, deionized water 20 parts, 12 parts, kaolinite, titanium dioxide 5 parts.

In the present embodiment, the preparation method of described auxiliary agent is: pulverized by kaolinite, cross 40 mesh sieves, obtain kaolinite powder, polyoxyethylene glycol is added in deionized water, stir, kaolinite powder after sieving is added wherein, stir 20min, add silane coupling agent kh-550, stir 20min, obtain liquid A, titanium dioxide is pulverized, cross 40 mesh sieves, and nanometer silicon carbide then, nanometer boron fibre joins in liquid A together, stir 20min, filtration drying, 120 mesh sieves are crossed after pulverizing, under helium atmosphere, after calcining 3h at being heated to 820 DEG C, air cooling is to room temperature, then pulverize, cross 50 mesh sieves, obtain auxiliary agent, its preparation method comprises the following steps:

Step 1, red clay, albite, wollastonite, nano level aluminium sesquioxide and Niobium Pentxoxide to be mixed, then ball mill abrasive dust is put into, cross 230 mesh sieves, again auxiliary agent and boron nitride are sent into ball milling 18h in ball mill, add potassium hydroxide again, continue ball milling 2h, being washed to pH value is 7, filters and obtains powder;

Step 2, will filter the powder that obtains using helium as shielding gas, at 880 DEG C, calcine 4h, then air cooling is to room temperature, sends into ball mill abrasive dust, crosses 120 mesh sieves, obtains powder particle A;

Step 3, sodium zirconate, nickel oxide, zinc oxide and powder particle A mixed and stir, being heated to 980 DEG C, and calcining 1h, ball mill pulverizing, crossing 80 mesh sieves, obtain powder particle B;

Step 4, powder particle B to be mixed with the ratio of deionized water in 4:3, then put into ball mill ball milling 16h, then moulding, in the atmosphere of helium, 800 DEG C of temperature lower calcination 2h, then temperature is increased to 1200 DEG C, calcining 4h, insulation 1h, last air cooling is to room temperature.

embodiment three

A kind of new special stupalith, described new special stupalith is made up of the raw material of following weight part: red clay 50 parts, albite 3 parts, nano level aluminium sesquioxide 7 parts, nickel oxide 3 parts, 3 parts, zinc oxide, Niobium Pentxoxide 7 parts, boron nitride 7 parts, wollastonite 7 parts, sodium zirconate 4 parts, auxiliary agent 7 parts; Described special addition agent is made up of the raw material of following weight part: nano-silicon nitride 1.2 parts, nanometer boron fibre 0.9 part, silane coupling agent kh-5500.8 part, polyoxyethylene glycol 0.4 part, deionized water 25 parts, 17 parts, kaolinite, titanium dioxide 7 parts.

Step 1, red clay, albite, wollastonite, nano level aluminium sesquioxide and Niobium Pentxoxide to be mixed, then ball mill abrasive dust is put into, cross 230 mesh sieves, again auxiliary agent and boron nitride are sent into ball milling 20h in ball mill, add potassium hydroxide again, continue ball milling 3h, being washed to pH value is 8, filters and obtains powder;

Step 2, will filter the powder that obtains using helium as shielding gas, at 900 DEG C, calcine 6h, then air cooling is to room temperature, sends into ball mill abrasive dust, crosses 120 mesh sieves, obtains powder particle A;

Step 3, sodium zirconate, nickel oxide, zinc oxide and powder particle A mixed and stir, being heated to 990 DEG C, and calcining 3h, ball mill pulverizing, crossing 80 mesh sieves, obtain powder particle B;

Step 4, powder particle B to be mixed with the ratio of deionized water in 4:3, then put into ball mill ball milling 18h, then moulding, in the atmosphere of helium, 900 DEG C of temperature lower calcination 2h, then temperature is increased to 1350 DEG C, calcining 4-5h, insulation 2h, last air cooling is to room temperature.

embodiment four

A kind of new special stupalith, described new special stupalith is made up of the raw material of following weight part: red clay 45 parts, albite 2 parts, nano level aluminium sesquioxide 7 parts, nickel oxide 3 parts, 2 parts, zinc oxide, Niobium Pentxoxide 7 parts, boron nitride 7 parts, wollastonite 7 parts, sodium zirconate 3 parts, auxiliary agent 6 parts; Described special addition agent is made up of the raw material of following weight part: nano-silicon nitride 1.0 parts, nanometer boron fibre 0.9 part, silane coupling agent kh-5500.65 part, polyoxyethylene glycol 0.3 part, deionized water 24 parts, 13 parts, kaolinite, titanium dioxide 6 parts.

The preparation method of described auxiliary agent is: pulverized by kaolinite, cross 40 mesh sieves, obtain kaolinite powder, polyoxyethylene glycol is added in deionized water, stir, kaolinite powder after sieving is added wherein, stir 20min, add silane coupling agent kh-550, stir 20min, obtain liquid A, titanium dioxide is pulverized, cross 40 mesh sieves, and nanometer silicon carbide then, nanometer boron fibre joins in liquid A together, stir 20min, filtration drying, 120 mesh sieves are crossed after pulverizing, under helium atmosphere, after calcining 3h at being heated to 823 DEG C, air cooling is to room temperature, then pulverize, cross 50 mesh sieves, obtain auxiliary agent, its preparation method comprises the following steps:

Step 1, red clay, albite, wollastonite, nano level aluminium sesquioxide and Niobium Pentxoxide to be mixed, then ball mill abrasive dust is put into, cross 230 mesh sieves, again auxiliary agent and boron nitride are sent into ball milling 20h in ball mill, add potassium hydroxide again, continue ball milling 2h, being washed to pH value is 7.8, filters and obtains powder;

Step 2, will filter the powder that obtains using helium as shielding gas, at 900 DEG C, calcine 4-6h, then air cooling is to room temperature, sends into ball mill abrasive dust, crosses 120 mesh sieves, obtains powder particle A;

Step 3, sodium zirconate, nickel oxide, zinc oxide and powder particle A mixed and stir, being heated to 980 DEG C, and calcining 1-3h, ball mill pulverizing, crossing 80 mesh sieves, obtain powder particle B;

Step 4, powder particle B to be mixed with the ratio of deionized water in 4:3, then put into ball mill ball milling 18h, then moulding, in the atmosphere of helium, 870 DEG C of temperature lower calcination 2h, then temperature is increased to 1300 DEG C, calcining 5h, insulation 2h, last air cooling is to room temperature.

The Specifeca tion speeification of the new special stupalith that the various embodiments described above obtain is as shown in the table:

As seen from the above table, its bending strength of new special stupalith of the present invention can reach 994MPa, and fracture toughness property can reach 13MPa/m, and Vickers' hardness can reach 93GPa, and its intensity is high, good toughness, and the rub resistance ability on its surface improves greatly, and surface is less scaling.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims

1. a new special stupalith, it is characterized in that, described new special stupalith is made up of the raw material of following weight part: red clay 40-50 part, albite 1-3 part, nano level aluminium sesquioxide 5-7 part, nickel oxide 1-3 part, zinc oxide 1-3 part, Niobium Pentxoxide 5-7 part, boron nitride 5-7 part, wollastonite 5-7 part, sodium zirconate 3-4 part, auxiliary agent 5-7 part.

2. new special stupalith as claimed in claim 1, it is characterized in that, described special addition agent is made up of the raw material of following weight part: nano-silicon nitride 0.8-1.2 part, nanometer boron fibre 0.6-0.9 part, silane coupling agent kh-5500.6-0.8 part, polyoxyethylene glycol 0.3-0.4, deionized water 20-25 part, kaolinite 12-17 part, titanium dioxide 5-7 part.

3. new special stupalith as claimed in claim 2, it is characterized in that, the preparation method of described auxiliary agent is: pulverized by kaolinite, cross 40 mesh sieves, obtain kaolinite powder, polyoxyethylene glycol is added in deionized water, stir, kaolinite powder after sieving is added wherein, stir 20min, add silane coupling agent kh-550, stir 20min, obtain liquid A, titanium dioxide is pulverized, cross 40 mesh sieves, and nanometer silicon carbide then, nanometer boron fibre joins in liquid A together, stir 20min, filtration drying, 120 mesh sieves are crossed after pulverizing, under helium atmosphere, after calcining 3h at being heated to 820-830 DEG C, air cooling is to room temperature, then pulverize, cross 50 mesh sieves, obtain auxiliary agent.

4. new special stupalith as claimed in claim 3, it is characterized in that, described new special stupalith is made up of the raw material of following weight part: red clay 45 parts, albite 2 parts, nano level aluminium sesquioxide 6 parts, nickel oxide 2 parts, 2 parts, zinc oxide, Niobium Pentxoxide 6 parts, boron nitride 6 parts, wollastonite 6 parts, sodium zirconate 3.2 parts, auxiliary agent 6.5 parts;

The component of described auxiliary agent is counted by weight: nano-silicon nitride 0.9 part, nanometer boron fibre 0.7 part, silane coupling agent kh-5500.65 part, polyoxyethylene glycol 0.36 part, deionized water 23 parts, 14 parts, kaolinite, titanium dioxide 6 parts.

5. the preparation method of new special stupalith as claimed in claim 4, it is characterized in that, the preparation method of described new special stupalith comprises the following steps: