A kind of 3D printing ceramic material and preparation method thereof
Technical field
The invention belongs to field of compound material, and in particular to a kind of preparation method of 3D printing ceramic material.
Background technology
The principle of 3D printing technique is layered manufacturing, successively increases material to generate the technology of 3D solid, so quilt again
Referred to as increases material manufacturing technology.In recent years, increases material manufacturing technology is quickly grown, huge on manufacture field influence, each by the world
The very big concern of state is known as overturning the industrial revolution again of traditional manufacture, is put into China's strategic emerging industries.
3D printing mainstream forming technique includes selective laser sintering(SLS), melting precipitation molding(FDM), cubic light it is solid
Change(SLA)Deng.Selective laser sintering was ground by the C.R. Dechard of Texas ,Usa university Austin in 1989
Work(is made.The energy is made using infrared laser, the Modeling Material used is mostly dusty material.During processing, powder is preheated first
To the temperature for being slightly less than its fusing point, then powder is paved under the action of rod is struck off;Laser beam root under the control of the computer
It is selectively sintered according to layering cross section information, carries out next layer of sintering after the completion of one layer again, remove after being all sintered more
Remaining powder then can be obtained by the part sintered.Such forming method has that manufacturing process is simple, and degree of flexibility is high, material
Range of choice is wide, material price is cheap, it is at low cost, stock utilization is high, and shaping speed is fast the features such as, 2014, GE companies ground
20 parts have been made a part by the aircraft engine machine nozzle of hair, and material cost is greatly reduced, and also save fuel oil 15%.
3D printing currently on the market is of less types with laser sintered ceramic material, relies primarily on import.
Monocrystalline sapphire whisker (Single crystal sapphire Whisker, also known as monocrystalline sapphire fiber) is
A kind of signle crystal alumina whisker with certain draw ratio is small, anti-oxidant, high with superior mechanical intensity, heat shock resistance, proportion
The excellent physical property such as wear-resisting amount and highly corrosion resistant.Monocrystalline sapphire whisker is suitable as ceramics, metal, plastics and rubber
Reinforcing component.Therefore, monocrystalline sapphire whisker becomes the optimal selection of third generation advanced composite material.
Invention content
The purpose of the present invention is to provide a kind of 3D printing ceramic materials and preparation method thereof, add in zirconia ceramics
After entering monocrystalline sapphire whisker, the modulus of elasticity in static bending, the tensile strength of product can be significantly improved, is used to prepare high-strength, high-ductility
Fine engineering ceramics.
In order to achieve the above object, the technical scheme is that:
A kind of 3D printing ceramic material, including following component by weight:
50 ~ 150 parts by weight of Zirconium oxide powder
10 ~ 30 parts by weight of Zirconium oxide powder inorganic agent
100 ~ 500 parts by weight of decentralized medium
1 ~ 10 parts by weight of monocrystalline sapphire whisker
1 ~ 10 parts by weight of stabilizer
5 ~ 50 parts by weight of light curing agent.
The 3D printing ceramic material, each component preferred weight number are as follows:
80 ~ 120 parts by weight of Zirconium oxide powder
20 ~ 30 parts by weight of Zirconium oxide powder inorganic agent
100 ~ 500 parts by weight of decentralized medium
1 ~ 10 parts by weight of monocrystalline sapphire whisker
1 ~ 10 parts by weight of stabilizer
5 ~ 30 parts by weight of light curing agent.
The Zirconium oxide powder be 50 ~ 500nm of grain size, purity(wt%)>90% commercially available monoclinic zirconia;The zirconium oxide
Powder-processed agent is sodium pyrophosphate, sodium tripolyphosphate and oxalic acid any and more than;The decentralized medium for deionized water and
Any and two kinds of mixing of absolute ethyl alcohol.
The monocrystalline sapphire whisker is 0.1 ~ 1 micron of diameter, and length is 5 ~ 100 microns, density 4g/cm3, purity
(wt%)Monocrystalline sapphire whisker for 90-99.9%.
Mixture of the stabilizer for any one of Yb2O3, CeO2 or both;The light curing agent is acrylate
One of with the mixture of polyurethane resin, acrylate and epoxy resin.
A kind of preparation method of 3D printing ceramic material, a, in heating unit add in deionized water according to formula ratio
With Zirconium oxide powder inorganic agent, stirring and dissolving is until Zirconium oxide powder inorganic agent is completely dissolved obtained solution;B is made to step a
Solution in add in Zirconium oxide powder, stir 1 ~ 4h at a constant temperature, fully after reaction, cool down, filter, it is dry, after being handled
Zirconium oxide powder;C, stabilizer, light curing agent and monocrystalline sapphire whisker are added to according to formula ratio in absolute ethyl alcohol,
2 ~ 6h is quickly stirred under room temperature, mixed liquor is made;D, mixed liquor made from step c is shaken into 30 ~ 90min under ultrasound;Then plus
Enter step b treated Zirconium oxide powder, stir 3 ~ 15h;E, above-mentioned mixed-powder is dried, 3D printing use can be obtained after sieve
Ceramic material.
Heating temperature described in the step a is 50 ~ 80 DEG C, and mixing speed is 350 ~ 550r/min.
Heating temperature is 80 ± 5 DEG C in the step b, and mixing speed is 350 ~ 750r/min.
Step c, mixing speed is 500 ~ 750r/min in d.
Drying temperature is 80 ~ 120 DEG C in step e.
Using 400 model 3D printers of EOS M, using powder sintered molding(Selected Laser Sintering,
Abbreviation SLS)Technology carries out powder sintered molding using laser to dusty material.The monocrystalline sapphire whisker is by Dongguan
Prepared by the research and development of monocrystalline sapphire whisker team of Shenzhen Research Institute of Tsinghua University innovation center, select 0.1 ~ 5 micron of diameter, and length is
5 ~ 100 microns of monocrystalline sapphire whisker.Selected monocrystalline sapphire whisker density be 4g/cm3, purity(wt%)About 99%.
The beneficial effects of the invention are as follows:
Advantageous effect:
(1)A kind of 3D printing of the present invention has the higher modulus of elasticity in static bending, tensile strength with ceramic material;
(2)A kind of 3D printing of the present invention is small with powder granule with ceramic material, and particle diameter distribution is narrow, and mobility is preferable,
It is preferable with 3D printer shaping speed matching;Product property is stablized, and precision is high.
(3)A kind of 3D printing of the present invention is simple with ceramic material process, is easy to industrialized production;
(4)A kind of 3D printing of the present invention is extensive with ceramic material raw material sources, at low cost, and with good environment
Benefit and economic benefit.
Description of the drawings
Attached drawing 1 shows the preparation flow figure of 3D printing ceramic material.
Specific embodiment
The present invention is described in further detail by embodiment.
Embodiment 1
(1)In 50 ~ 80 DEG C of heating unit, 20 parts by weight sodium pyrophosphates are added in 100 deionized waters, 350 ~
Stirring under 750r/min speed is until sodium pyrophosphate fully dissolves.
(2)80 parts by weight Zirconium oxide powders are added in into above-mentioned solution, 350 ~ 750r/min at being 80 ± 5 DEG C in constant temperature
1h is stirred, fully after reaction, cools down, filters, dry, the Zirconium oxide powder that obtains that treated.
(3)By 2 parts by weight Y2O3, 5 parts by weight propylene acid esters and polyurethane resin(1:1)With 1 parts by weight monocrystalline sapphire crystalline substance
It must be added to according to formula ratio in 200 parts by weight absolute ethyl alcohols, quickly stir 2 ~ 6 h with 500 ~ 750r/min at normal temperatures.(4)
Above-mentioned mixed liquor is shaken into 30 ~ 90min under ultrasound.
(5)By treated, Zirconium oxide powder is added in above-mentioned mixed liquor, and 500 ~ 750r/min stirs 3 ~ 15h.
(6)Will be dry at above-mentioned 80 ~ 120 DEG C of mixed-powder, 3D printing ceramic material can be obtained after screening.
Embodiment 2
(1)In 50 ~ 80 DEG C of heating unit, 20 parts by weight sodium tripolyphosphates are added in 200 parts by weight of deionized water,
Stirring under 350 ~ 750r/min speed is until sodium tripolyphosphate fully dissolves.
(2)90 parts by weight Zirconium oxide powders are added in into above-mentioned solution, 350 ~ 750r/min at being 80 ± 5 DEG C in constant temperature
2h is stirred, fully after reaction, cools down, filters, dry, the Zirconium oxide powder that obtains that treated.
(3)By 1 parts by weight Y2O3, 3 parts by weight propylene acid esters and polyurethane resin(1:1)With 3 parts by weight monocrystalline sapphires crystalline substance
It must be added to according to formula ratio in 200 parts by weight absolute ethyl alcohols, quickly stir 2 ~ 6 h with 500 ~ 750r/min at normal temperatures.
(4)Above-mentioned mixed liquor is shaken into 30 ~ 90min under ultrasound.
(5)By treated, Zirconium oxide powder is added in above-mentioned mixed liquor, and 500 ~ 750r/min stirs 3 ~ 15h.
(6)Will be dry at above-mentioned 80 ~ 120 DEG C of mixed-powder, 3D printing ceramic material can be obtained after screening.
Embodiment 3
(1)In 50 ~ 80 DEG C of heating unit, 25 parts by weight oxalic acid are added in 300 deionized waters, 350 ~ 750r/min
Stirring under speed is until oxalic acid fully dissolves.
(2)100 parts by weight Zirconium oxide powders are added in into above-mentioned solution, 350 ~ 750r/min at being 80 ± 5 DEG C in constant temperature
2h is stirred, fully after reaction, cools down, filters, dry, the Zirconium oxide powder that obtains that treated.
(3)By 5 parts by weight CeO2, 5 parts by weight propylene acid esters and polyurethane resin(2:3)With 7 parts by weight monocrystalline sapphires
Whisker is added to according to formula ratio in 500 parts by weight absolute ethyl alcohols, quickly stirs 2 ~ 6 h with 500 ~ 750r/min at normal temperatures.
(4)Above-mentioned mixed liquor is shaken into 30 ~ 90min under ultrasound.
(5)By treated, Zirconium oxide powder is added in above-mentioned mixed liquor, and 500 ~ 750r/min stirs 3 ~ 15h.
(6)Will be dry at above-mentioned 80 ~ 120 DEG C of mixed-powder, 3D printing ceramic material can be obtained after screening.
Embodiment 4
(1)In 50 ~ 80 DEG C of heating unit, 30 parts by weight sodium tripolyphosphates are added in 500 deionized waters, 350 ~
Stirring under 750r/min speed is until sodium tripolyphosphate fully dissolves.
(2)100 parts by weight Zirconium oxide powders are added in into above-mentioned solution, 350 ~ 750r/min at being 80 ± 5 DEG C in constant temperature
2h is stirred, fully after reaction, cools down, filters, dry, the Zirconium oxide powder that obtains that treated.
(3)By 5 parts by weight CeO2, 10 parts by weight propylene acid esters and epoxy resin(2:3)With 10 parts by weight monocrystalline sapphires
Whisker is added to according to formula ratio in 500 parts by weight absolute ethyl alcohols, quickly stirs 2 ~ 6 h with 500 ~ 750r/min at normal temperatures.
(4)Above-mentioned mixed liquor is shaken into 30 ~ 90min under ultrasound.
(5)By treated, Zirconium oxide powder is added in above-mentioned mixed liquor, and 500 ~ 750r/min stirs 3 ~ 15h.
(6)Will be dry at above-mentioned 80 ~ 120 DEG C of mixed-powder, 3D printing ceramic material can be obtained after screening.
Embodiment 5
(1)In 50 ~ 80 DEG C of heating unit, 30 parts by weight sodium pyrophosphates are added in 500 deionized waters, 350 ~
Stirring under 750r/min speed is until sodium pyrophosphate fully dissolves.
(2)120 parts by weight Zirconium oxide powders are added in into above-mentioned solution, 350 ~ 750r/min at being 80 ± 5 DEG C in constant temperature
2h is stirred, fully after reaction, cools down, filters, dry, the Zirconium oxide powder that obtains that treated.
(3)By 10 parts by weight Y2O3:CeO2(2:3), 5 parts by weight propylene acid esters and epoxy resin(2:3)With 8 parts by weight lists
Brilliant sapphire whisker is added to according to formula ratio in 500 parts by weight absolute ethyl alcohols, is quickly stirred with 500 ~ 750r/min at normal temperatures
Mix 2 ~ 6 h.
(4)Above-mentioned mixed liquor is shaken into 30 ~ 90min under ultrasound.
(5)By treated, Zirconium oxide powder is added in above-mentioned mixed liquor, and 500 ~ 750r/min stirs 3 ~ 15h.
(6)Will be dry at above-mentioned 80 ~ 120 DEG C of mixed-powder, 3D printing ceramic material can be obtained after screening.
3D printing prepared by embodiment 1-5 with ceramic material in mechanical performance is tested, as a result see the table below:
The mechanical performance of 1 3D printing ceramic material of subordinate list
| Bending strength (MPa) | Tensile strength (MPa) | Density (g/cm3) |
Embodiment 1 | 753 | 450 | 6.25 |
Embodiment 2 | 749 | 463 | 6.13 |
Embodiment 3 | 758 | 448 | 6.32 |
Embodiment 4 | 776 | 469 | 6.25 |
Embodiment 5 | 768 | 465 | 6.18 |
Show that the embodiment of the present invention bending strength and tensile strength are very high by data above, it is with the obvious advantage.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.