CN104446402A - Zircon ceramic and preparation method thereof - Google Patents

Abstract

The invention discloses zircon ceramic. The zircon ceramic is prepared from the following raw materials in parts by weight: 2-3 parts of titanium dioxide, 70-80 parts of zircon, 23-26 parts of illite clay, 1-2 parts of butyl acetate, 1-2 parts of silane coupling agent, 13-17 parts of sintered mullite powder, 5-7 parts of zirconia powder, 3-4 parts of nanometer aluminium oxide, 5-8 parts of potassium titanate whiskers, 3-4 parts of tetraethoxysilane, an appropriate amount of deionized water, 1-2 parts of potassium hydroxide, an appropriate amount of ethyl alcohol and 4-6 parts of auxiliaries. According to the ceramic disclosed by the invention, by using zircon, the ceramic has extremely high wear resistance and good heat resistance; by adding the potassium titanate whiskers, the toughness and the anti-seismic property of the ceramic are improved, and the service life of a channel is greatly prolonged; by using the auxiliaries disclosed by the invention, the surface smoothness, the wear resistance and the heat resistance of the ceramic can be improved.

Description

A kind of zircon ceramics and preparation method thereof

Technical field

The present invention relates to stupalith field, particularly relate to a kind of zircon ceramics and preparation method thereof.

Background technology

The material of current passage, pipeline has aluminum alloy materials, pottery etc., and aluminum alloy materials wears no resistance, and conduit evanescence, affects precision of color separation, and often change, cost is high; Stupalith fragility used is at present large, and wear resistance is not too high, and cold-hot does not stimulate, and resistance to acids and bases is poor, and therefore need research wear resistance good, the stupalith of hardness is high, good toughness, and vibration resistance is heat-resisting, corrosion-resistant excellent performance of Denging, to reduce costs.

Summary of the invention

The object of the present invention is to provide a kind of zircon ceramics and preparation method thereof, this pottery has high wear resistance, good heat resistance, toughness and anti-seismic performance good.

Technical scheme of the present invention is as follows:

A kind of zircon ceramics, is characterized in that being made up of the raw material of following weight part: titanium dioxide 2-3, zircon 70-80, illite clay 23-26, N-BUTYL ACETATE 1-2, silane coupling agent 1-2, fused mullite powder 13-17, zirconia powder 5-7, nano aluminium oxide 3-4, crystal whisker of hexa potassium titanate 5-8, tetraethoxy 3-4, deionized water are appropriate, potassium hydroxide 1-2, appropriate amount of ethanol, auxiliary agent 4-6;

Described auxiliary agent is made up of the raw material of following weight part: kaolin 3-4, rare earth 1-2, zinc tetroxy chromate 0.3-0.4, nano-silicon nitride 0.8-1.2, nanometer boron fibre 0.6-0.9, nano-sized carbon 0.3-0.4, silane coupling agent kh-550 0.6-0.8, polyoxyethylene glycol 0.3-0.4, water 7-11, preparation method is: be added to the water by polyoxyethylene glycol, stir, add kaolin, stir 20-30 minute, add the silane coupling agent kh-550 of half weight part again, stir 10-15 minute, add rare earth again, stirring reaction 20-30 minute, add the silane coupling agent kh-550 of residuals weight part again, stir 10-15 minute, add other remaining components again, stirring reaction 20-30 minute, ultrasonic disperse 6-8 minute, filter, dry, pulverize, cross 40 mesh sieves, under nitrogen atmosphere, 2-3 hour is calcined at 1380-1440 DEG C, pulverize, cross 40 mesh sieves, obtain.

The preparation method of described zircon ceramics, is characterized in that comprising the following steps:

(1) by zircon, fused mullite powder, zirconia powder mixing, ball milling, cross 200 mesh sieves, add the ethanol of 0.7-0.9 times of weight part, send into ball milling 24-27 in ball mill individual hour, then add potassium hydroxide, N-BUTYL ACETATE, silane coupling agent, continue ball milling 2-3 hour, being washed to pH value is 8-9, filters, obtains filter cake;

(2) filter cake (1) step obtained is pulverized, and under nitrogen atmosphere, calcines 2-3 hour, takes out and pulverize, cross 50 mesh sieves, obtain particle at 850-900 DEG C;

(3) ethanol of 30-40 weight part is got, add tetraethoxy, be stirred to dissolving, add titanium dioxide, nano aluminium oxide, stirring obtains mixture, illite clay is pulverized, while seethe stirring limit to spray into mixture, is heated to 70-80 DEG C, continue to seethe and be stirred to ethanol and evaporate completely, pulverize, cross 50 mesh sieves, obtain particle;

(4) particle that (2) step and (3) step obtain is mixed with other remaining components, by material: ball: water=1:1.4:0.7, ball milling 24-30 hour, moulding, in nitrogen atmosphere, individual hour of pre-burning 1.5-2 at 700-800 DEG C, at 1780-1880 DEG C, calcine 4-5 hour again, to obtain final product.

Beneficial effect of the present invention

Pottery of the present invention employs zircon, makes pottery have high wear resistance, good heat resistance; By adding crystal whisker of hexa potassium titanate, adding toughness and the anti-seismic performance of pottery, substantially prolongs the work-ing life of passage; The auxiliary agent of the application of the invention, can increase the surface smoothness of pottery, wear resistance and thermotolerance.

Embodiment

A kind of zircon ceramics, is made up of the raw material of following weight part (kilogram): titanium dioxide 2.5, zircon 75, illite clay 24, N-BUTYL ACETATE 1.5, silane coupling agent 1.5, fused mullite powder 15, zirconia powder 6, nano aluminium oxide 3.5, crystal whisker of hexa potassium titanate 6, tetraethoxy 3.5, deionized water are appropriate, potassium hydroxide 1.5, appropriate amount of ethanol, auxiliary agent 5;

Described auxiliary agent is made up of the raw material of following weight part (kilogram): kaolin 3.5, rare earth 1.5, zinc tetroxy chromate 0.3, nano-silicon nitride 1, nanometer boron fibre 0.7, nano-sized carbon 0.3, silane coupling agent kh-550 0.7, polyoxyethylene glycol 0.3, water 8; Preparation method is: be added to the water by polyoxyethylene glycol, stirs, and adds kaolin, stir 25 minutes, then add the silane coupling agent kh-550 of half weight part, stir 13 minutes, add rare earth again, stirring reaction 25 minutes, then the silane coupling agent kh-550 adding residuals weight part, stir 13 minutes, add other remaining components again, stirring reaction 25 minutes, ultrasonic disperse 7 minutes, filters, dry, pulverize, cross 40 mesh sieves, under nitrogen atmosphere, calcine 2.5 hours at 1400 DEG C, pulverize, cross 40 mesh sieves, to obtain final product.

The preparation method of described zircon ceramics, comprises the following steps:

(1) by zircon, fused mullite powder, zirconia powder mixing, ball milling, cross 200 mesh sieves, add the ethanol of 0.8 times of weight part, ball milling 25 hours in feeding ball mill, then add potassium hydroxide, N-BUTYL ACETATE, silane coupling agent, continue ball milling 2.5 hours, being washed to pH value is 8, filters, obtains filter cake;

(2) filter cake (1) step obtained is pulverized, and under nitrogen atmosphere, calcines 2.5 hours at 870 DEG C, takes out and pulverize, cross 50 mesh sieves, obtain particle;

(3) ethanol of 35 weight parts is got, add tetraethoxy, be stirred to dissolving, add titanium dioxide, nano aluminium oxide, stirring obtains mixture, illite clay is pulverized, while seethe stirring limit to spray into mixture, is heated to 75 DEG C, continue to seethe and be stirred to ethanol and evaporate completely, pulverize, cross 50 mesh sieves, obtain particle;

(4) particle that (2) step and (3) step obtain is mixed with other remaining components, by material: ball: water=1:1.4:0.7, ball milling 28 hours, moulding, in nitrogen atmosphere, pre-burning 1.8 hours at 750 DEG C, calcine 4.5 hours at 1500 DEG C again, to obtain final product.

Experimental data:

The Vickers' hardness of this embodiment pottery is 90GPa, and bending strength is 1110MPa, and fracture toughness property is 13MPam ^1/2.

Claims (2)

1. a zircon ceramics, is characterized in that being made up of the raw material of following weight part: titanium dioxide 2-3, zircon 70-80, illite clay 23-26, N-BUTYL ACETATE 1-2, silane coupling agent 1-2, fused mullite powder 13-17, zirconia powder 5-7, nano aluminium oxide 3-4, crystal whisker of hexa potassium titanate 5-8, tetraethoxy 3-4, deionized water are appropriate, potassium hydroxide 1-2, appropriate amount of ethanol, auxiliary agent 4-6;

Described auxiliary agent is made up of the raw material of following weight part: kaolin 3-4, rare earth 1-2, zinc tetroxy chromate 0.3-0.4, nano-silicon nitride 0.8-1.2, nanometer boron fibre 0.6-0.9, nano-sized carbon 0.3-0.4, silane coupling agent kh-550 0.6-0.8, polyoxyethylene glycol 0.3-0.4, water 7-11, preparation method is: be added to the water by polyoxyethylene glycol, stir, add kaolin, stir 20-30 minute, add the silane coupling agent kh-550 of half weight part again, stir 10-15 minute, add rare earth again, stirring reaction 20-30 minute, add the silane coupling agent kh-550 of residuals weight part again, stir 10-15 minute, add other remaining components again, stirring reaction 20-30 minute, ultrasonic disperse 6-8 minute, filter, dry, pulverize, cross 40 mesh sieves, under nitrogen atmosphere, 2-3 hour is calcined at 1380-1440 DEG C, pulverize, cross 40 mesh sieves, obtain.

2. the preparation method of zircon ceramics according to claim 1, is characterized in that comprising the following steps:

(1) by zircon, fused mullite powder, zirconia powder mixing, ball milling, cross 200 mesh sieves, add the ethanol of 0.7-0.9 times of weight part, send into ball milling 24-27 in ball mill individual hour, then add potassium hydroxide, N-BUTYL ACETATE, silane coupling agent, continue ball milling 2-3 hour, being washed to pH value is 8-9, filters, obtains filter cake;

(2) filter cake (1) step obtained is pulverized, and under nitrogen atmosphere, calcines 2-3 hour, takes out and pulverize, cross 50 mesh sieves, obtain particle at 850-900 DEG C;

(3) ethanol of 30-40 weight part is got, add tetraethoxy, be stirred to dissolving, add titanium dioxide, nano aluminium oxide, stirring obtains mixture, illite clay is pulverized, while seethe stirring limit to spray into mixture, is heated to 70-80 DEG C, continue to seethe and be stirred to ethanol and evaporate completely, pulverize, cross 50 mesh sieves, obtain particle;

(4) particle that (2) step and (3) step obtain is mixed with other remaining components, by material: ball: water=1:1.4:0.7, ball milling 24-30 hour, moulding, in nitrogen atmosphere, individual hour of pre-burning 1.5-2 at 700-800 DEG C, at 1780-1880 DEG C, calcine 4-5 hour again, to obtain final product.