CN108383433A - Composite material, preparation method and applications for 3D printing - Google Patents
Composite material, preparation method and applications for 3D printing Download PDFInfo
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- CN108383433A CN108383433A CN201810345877.2A CN201810345877A CN108383433A CN 108383433 A CN108383433 A CN 108383433A CN 201810345877 A CN201810345877 A CN 201810345877A CN 108383433 A CN108383433 A CN 108383433A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00181—Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The composite material that the present invention provides a kind of for 3D printing, preparation method and applications, it is related to 3D printing field of material technology, the above-mentioned composite material for 3D printing includes two kinds of components of powder and water material, wherein, powder is mainly made of gangue, ash concrete, dispersant, polyvinyl alcohol and alkali-resistant glass fibre, and water material is mainly made of mixing water, acrylic emulsion and water-reducing agent.Thixotropy and the setting time of printed material can be significantly improved by above-mentioned powder and water material compounding composite material obtained, it is bad that existing cement-based material thixotropy has been effectively relieved, setting time can not be applied to the problem of 3D printing more slowly, simultaneously, turn waste into wealth instead of framework materials such as sandstones using gangue in powder of the present invention and significantly reduce the cost of 3D printing composite material of the present invention.Composite material of the present invention for 3D printing can be widely applied in 3D printing building field.
Description
Technical field
The present invention relates to 3D printing field of material technology, more particularly, to a kind of composite material for 3D printing, prepare
Method and its application.
Background technology
3D printing technique be it is a kind of by the superposition of continuous physical layer, successively increase material and realize the advanced of 3D solid
Manufacturing technology has the characteristics that digitlization, networking, personalization and customizes.3D printing technique and common print process are very
It is similar, can be in advance in the information of the good product of Computer Design, then machine is transferred to print, the difference is that, common ink becomes
At materials such as plastics, fiber, powder, these materials are sprayed by large scale injector, are layering to form an entity products.3D
Printing technique has used maturation in the industries such as aerospace, automobile, medical instrument and mold manufacturing, just gradually uses at present
In building field.
Building or wall are manufactured using 3D printing technique, 3D printing composite material is mainly wanted there are two aspect substantially
It asks：
One, material needs the thixotropy for having certain, i.e., have in the motion process of pumping certain mobility but
It is squeezed after lifting one's head extrusion and does not have mobility in a stationary situation, there is certain self-reliance；
Two, it is desirable that material has faster setting time, and during printing wall height is increased, material below is solidifying
The intensity having after knot can support the dead weight of prints wall.Meeting the two aspects can realize that 3D printing is built
Continuous construction, guaranteed efficiency.
Gangue is the solid waste discharged during coal mining process and coal washing, be one kind in coalification course with coal seam companion
A kind of relatively low, harder than the coal black and gray rock of raw phosphorus content.A large amount of stackings of gangue, not only cover soil, influence to give birth to
State environment, spoil leaching water will pollute surrounding soil and underground water, and contain certain combustible in gangue, suitable
Under the conditions of occur spontaneous combustion, the pernicious gases such as discharge sulfur dioxide, nitrogen oxides, oxycarbide and flue dust pollute atmospheric environment.It is existing
Have in technology since gangue has certain viscosity, often coal gangue subculture is used to produce ordinary cement for clay composition.
Therefore, have the characteristics that certain viscosity using gangue, research and develop one kind raw material based on gangue
Composite material be applied to 3D printing field, and then improve thixotropy and the setting time of printed material, while section of turning waste into wealth
About a large amount of cement and fine aggregate become very necessary and urgent.
In view of this, special propose the present invention.
Invention content
The first object of the present invention is to provide a kind of composite material for 3D printing, and the composite material is mainly by powder
Material and two kinds of components of water material stir and evenly mix obtained, wherein powder is mainly by gangue, ash concrete, dispersant, polyvinyl alcohol and resistance to
Alkali containing glass fibre forms, and water material is mainly made of mixing water, acrylic emulsion and water-reducing agent.By above-mentioned powder and water material compounding system
The composite material obtained can significantly improve thixotropy and the setting time of printed material, and existing cement-based material has been effectively relieved and has touched
It is denaturalized bad, setting time can not be applied and the problem of 3D printing more slowly.
The second object of the present invention is to provide a kind of preparation method of the composite material for 3D printing, and this method is first
Respectively by two kinds of powder, water material component mixings, then by respectively after mixing powder and water material press 100：13~16 mass ratio
3D building printers are stirred evenly and be pumped into, then squeezes out and obtains the composite material for 3D printing, the above method, which has, to be prepared
It is simple for process, easy to operate, easy to implement, the advantages of special process equipment is not needed in preparation process.
The third object of the present invention is to provide a kind of application of the composite material for 3D printing, and the composite material can
To be widely used in 3D printing building field.
A kind of composite material for 3D printing provided by the invention, the composite material include two kinds of groups of powder and water material
Point, wherein
The powder, it is by mass percentage, main composed of the following components：Gangue 57.8~83.78%, ash concrete
16~40%, dispersant 0.01~0.1%, polyvinyl alcohol 0.01~0.1% and alkali-resistant glass fibre 0.2~2%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.2~99.84%, acrylic acid
Lotion 0.1~0.5% and water-reducing agent 0.06~0.3%.
Further, the powder, it is by mass percentage, main composed of the following components：Gangue 63.9~
79.78%, ash concrete 20~35%, dispersant 0.01~0.05%, polyvinyl alcohol 0.01~0.05% and alkali-resistant glass fibre
0.2~1%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.26~99.83%, propylene
Yogurt liquid 0.11~0.44% and water-reducing agent 0.06~0.3%.
Further, the powder, it is by mass percentage, main composed of the following components：Gangue 69.16~
74.78%, ash concrete 25~30%, dispersant 0.01~0.02%, polyvinyl alcohol 0.01~0.02% and alkali-resistant glass fibre
0.2~0.8%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.3~99.7%, acrylic acid
Lotion 0.2~0.4% and water-reducing agent 0.1~0.3%；
Preferably, the powder, it is by mass percentage, main composed of the following components：Gangue 71.46%, buck
Mud 28%, dispersant 0.02%, polyvinyl alcohol 0.02% and alkali-resistant glass fibre 0.5%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.5%, acrylic emulsion
0.3% and water-reducing agent 0.2%.
Further, the mass ratio of the powder and water material is 100：13~16.
Further, the grain size of gangue is 10~200 mesh in the powder.
Further, the grain size is that the gangue of 20~40 mesh accounts for the 40~50% of gangue gross mass.
Further, the dispersant in the powder is hydroxypropyl methyl cellulose.
Further, the water-reducing agent in the water material is sulfamate water reducer or poly carboxylic acid series water reducer.
A kind of preparation method of composite material for 3D printing provided by the invention, the method specifically include following step
Suddenly：
First respectively by two kinds of powder, water material component mixings, then by respectively after mixing powder and water material press 100：13
~16 mass ratio stirs evenly and is pumped into 3D building printers, then squeezes out and obtains the composite material for 3D printing.
A kind of application of the composite material for 3D printing provided by the invention in 3D printing building field.
Compared with prior art, beneficial effects of the present invention are：
A kind of composite material for 3D printing provided by the invention, the composite material include two kinds of groups of powder and water material
Point, wherein powder is mainly made of gangue, ash concrete, dispersant, polyvinyl alcohol and alkali-resistant glass fibre, water material mainly by
Mixing water, acrylic emulsion and water-reducing agent composition.By above-mentioned powder and the water material compounding composite material obtained for being used for 3D printing
Thixotropy and the setting time that printed material can be significantly improved, it is bad to be effectively relieved existing cement-based material thixotropy, coagulates
It ties the time more slowly and can not apply and the problem of 3D printing, meanwhile, using gangue instead of skeletons such as sandstones in powder of the present invention
Material turns waste into wealth and significantly reduces the cost of 3D printing composite material of the present invention.
Include the following steps provided by the present invention for the preparation method of the composite material of 3D printing, first respectively by powder
Two kinds of material, water material component mixings, then by respectively after mixing powder and water material press 100：13~16 mass ratio stirs evenly
And be pumped into 3D building printers, then squeeze out and obtain the composite material for 3D printing, the above method have preparation process it is simple,
It is easy to operate, easy to implement, the advantages of special process equipment is not needed in preparation process.
Provided by the present invention for the application of the composite material of 3D printing, the composite material can be widely applied to 3D and beat
It prints in building field.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is a part of the embodiment of the present invention to apply example, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
According to an aspect of the present invention, a kind of composite material for 3D printing, the composite material include powder and
Two kinds of components of water material, wherein
The powder, it is by mass percentage, main composed of the following components：Gangue 57.8~83.78%, ash concrete
16~40%, dispersant 0.01~0.1%, polyvinyl alcohol 0.01~0.1% and alkali-resistant glass fibre 0.2~2%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.2~99.84%, acrylic acid
Lotion 0.1~0.5% and water-reducing agent 0.06~0.3%.
Powder in the present invention, component included in two kinds of components of water material are in composite material of the present invention for 3D printing
Act as：
Wherein, powder includes：
Gangue：Gangue is for replacing the fine aggregates such as traditional sand and part of cement in the present invention, in concrete
In play skeleton or filling effect, can reduce cost, reduce water consumption；Simultaneously because its have the characteristics that it is certain sticky, can be with
The Yi Hexing for significantly improving concrete mix enhances the pumpability of concrete.
Ash concrete：It can be hardened in air at slurry after adding water to stir as a kind of powdery hydraulicity inorganic gel materials
Or preferably hardening in water, and can the materials such as sand, stone are firmly glued together.
Dispersant：Dispersant is used to improve the dispersibility of cement, sand in the present invention, greatly improves the plasticity of mortar
And water-retaining property, make mortar that there is pumping, while water retention property makes slurry not soon to be cracked very much because of dry after output, increases
Intensity after strongization.
Polyvinyl alcohol：Polyvinyl alcohol has both the effect of adhesive and emulsifier in the present invention, with the dispersion in the present invention
Agent is used cooperatively, and can be improved flexibility, the water-retaining property of mortar, be improved the caking property of mortar.In addition, rubbing for mortar can also be reduced
It wipes, to enhance task performance and quality.
Alkali-resistant glass fibre：Also known as AR glass fibres have good alkaline resistance properties.Mortar is highly resistant in the present invention
The erosion of middle overbased material substance, has shock resistance, tensile strength high, and non-ignitable freeze proof, resistance to temperature, humidity changing capability are strong etc.
Advantage.The designability and mouldability of the application 3D printing composite material can be significantly improved.
In the present invention, the above-mentioned typical but non-limiting content of gangue is：57.8%, 63.9%, 69.16%,
71.46%, 74.78%, 79.78% or 83.78%.
In the present invention, the above-mentioned typical but non-limiting content of ash concrete is：16%, 20%, 25%, 28%, 30%,
35% or 40%.
In the present invention, the above-mentioned typical but non-limiting content of dispersant is：0.01%, 0.02%, 0.04%,
0.06%, 0.08% or 0.1%.
In the present invention, the above-mentioned typical but non-limiting content of polyvinyl alcohol is：0.01%, 0.02%, 0.04%,
0.06%, 0.08% or 0.1%.
In the present invention, the above-mentioned typical but non-limiting content of alkali-resistant glass fibre is：0.2%, 0.5%, 1%,
1.2%, 1.5% or 2%.
Wherein, water material includes：
Mixing water：Main body of the mixing water as water material in the present invention can hydrolyze after being mixed with the above-mentioned powder of the present invention
Or hydration reaction and become hyrate, since these hyrates mutually overlap and are coupled shape according to certain mode by various gravitation
At the structure of Behavior of Hardened Cement Paste, and then there is mouldability.
Acrylic emulsion：Acrylic emulsion of the present invention can play the effect lubricated well in water material, can be notable
The ratio of mud is reduced, while cement and aggregate being made to form the bonding of strength, and then concrete microcrack is prevented by polymer network
The ability of growth.
Water-reducing agent：Water-reducing agent can reduce mixing water amount under conditions of maintaining slump constant in the present invention,
Be added after concrete mix in mortar cement and coal gangue particle have peptizaiton, can improve its workability, reduce single
Position water consumption, improves the mobile performance of concrete mix.
In the present invention, the above-mentioned typical but non-limiting content of mixing water is：99.2%, 99.26%, 99.3%,
99.7%, 99.83% or 99.84%.
In the present invention, the above-mentioned typical but non-limiting content of acrylic emulsion is：0.1%, 0.2%, 0.3%, 0.4%
Or 0.5%.
In the present invention, the above-mentioned typical but non-limiting content of water-reducing agent is：0.06%, 0.1%, 0.15%, 0.2%,
0.25% or 0.3%.
A kind of composite material for 3D printing provided by the invention, the composite material include two kinds of groups of powder and water material
Point, wherein powder is mainly made of gangue, ash concrete, dispersant, polyvinyl alcohol and alkali-resistant glass fibre, the coal in powder
Spoil plays skeleton or filling effect, while because it has the characteristics that certain viscosity, can significantly improve concrete mix
Easy and property, enhances the pumpability of concrete；Ash concrete can be firmly glued together materials such as gangues as gel rubber material；
Polyvinyl alcohol and dispersant can improve the flexibility of mortar, water-retaining property, improve the caking property of mortar；Alkali-resistant glass fibre can
Significantly improve the designability and mouldability of the application 3D printing composite material.
Water material is mainly made of mixing water, acrylic emulsion and water-reducing agent, main body of the mixing water as water material, with above-mentioned powder
The structure of Behavior of Hardened Cement Paste is formed after material mixing, and then there is mouldability；Acrylic emulsion can play good lubrication in water material
Effect, the ratio of mud can be significantly reduced, while cement and aggregate being made to form the bonding of strength；Water-reducing agent can reduce mixing water
Amount, be added concrete mix after in mortar cement and coal gangue particle have peptizaiton, improve concrete mix
Mobile performance.
The composite material obtained for 3D printing is compounded at a specific ratio by above-mentioned powder and water material can significantly carry
The thixotropy of high printed material and setting time, it has been effectively relieved that existing cement-based material thixotropy is bad, and setting time is slower
Can not apply and the problem of 3D printing, meanwhile, using gangue instead of framework materials such as sandstones in powder of the present invention, change give up into
Treasured significantly reduces the cost of 3D printing composite material of the present invention.
In the preferred embodiment of the present invention, the powder, by mass percentage, mainly by following components group
At：Gangue 63.9~79.78%, ash concrete 20~35%, dispersant 0.01~0.05%, polyvinyl alcohol 0.01~0.05%
With alkali-resistant glass fibre 0.2~1%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.26~99.83%, propylene
Yogurt liquid 0.11~0.44% and water-reducing agent 0.06~0.3%.
In above-mentioned preferred embodiment, the powder is by mass percentage, main composed of the following components：Bastard coal
Stone 69.16~74.78%, ash concrete 25~30%, dispersant 0.01~0.02%, polyvinyl alcohol 0.01~0.02% and alkaline-resisting
Glass fibre 0.2~0.8%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.3~99.7%, acrylic acid
Lotion 0.2~0.4% and water-reducing agent 0.1~0.3%；
Preferably, the powder, it is by mass percentage, main composed of the following components：Gangue 71.46%, buck
Mud 28%, dispersant 0.02%, polyvinyl alcohol 0.02% and alkali-resistant glass fibre 0.5%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.5%, acrylic emulsion
0.3% and water-reducing agent 0.2%.
In the present invention, by the further adjustment and optimization to each component raw material dosage ratio, to advanced optimize
Technique effect of the present invention for the composite material of 3D printing.
In the preferred embodiment of the present invention, the mass ratio of the powder and water material is 100：13~16.
As a preferred embodiment, the mass ratio of above-mentioned powder and water material is 100：13~16, i.e., powder per ton
The water material for matching 130~160kg, the composite material obtained for 3D printing, which is mixed, by above-mentioned mass ratio significantly to carry
The thixotropy of high printed material and setting time, it has been effectively relieved that existing cement-based material thixotropy is bad, and setting time is slower
It can not apply and the problem of 3D printing.
In the preferred embodiment of the present invention, the grain size of gangue is 10~200 mesh in the powder.
In above-mentioned preferred embodiment, the grain size be 20~40 mesh gangue account for gangue gross mass 40~
50%.
As a preferred embodiment, above-mentioned grain size is main in composite material of the present invention for the gangue of 20~40 mesh
Play aggregate and filler, accounts for the 40~50% of gangue gross mass, the grain size of remaining gangue can be as needed
The target product for carrying out 3D printing carries out the adjustment of adaptability.
In the preferred embodiment of the present invention, the dispersant in the powder is hydroxypropyl methyl cellulose.
In the preferred embodiment of the present invention, the water-reducing agent in the water material is sulfamate water reducer or gathers
Carboxylic acid water reducing agent.
According to an aspect of the present invention, a kind of preparation method of composite material for 3D printing, the method are specific
Include the following steps：
First respectively by two kinds of powder, water material component mixings, then by respectively after mixing powder and water material press 100：13
~16 mass ratio stirs evenly and is pumped into 3D building printers, then squeezes out and obtains the composite material for 3D printing.
Include the following steps provided by the present invention for the preparation method of the composite material of 3D printing, first respectively by powder
Two kinds of material, water material component mixings, then by respectively after mixing powder and water material press 100：13~16 mass ratio stirs evenly
And be pumped into 3D building printers, then squeeze out and obtain the composite material for 3D printing, the above method have preparation process it is simple,
It is easy to operate, easy to implement, the advantages of special process equipment is not needed in preparation process.
According to an aspect of the present invention, a kind of composite material for 3D printing answering in 3D printing building field
With.
Technical scheme of the present invention is described further below in conjunction with embodiment.
Embodiment 1
A kind of composite material for 3D printing, the composite material include powder and water material, wherein
The powder, it is by mass percentage, main composed of the following components：100 mesh grain size gangues 13%, 40 mesh grains
Diameter gangue 28%, 10 mesh grain size gangues 16.8%, ash concrete 40%, hydroxypropyl methyl cellulose 0.1%, polyvinyl alcohol
0.1% and alkali-resistant glass fibre 2%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.2%, acrylic emulsion
0.5% and water-reducing agent 0.3%；
The preparation method of the above-mentioned composite material for 3D printing, includes the following steps：First respectively by powder, water material two
Kind of blending ingredients mixing, then by after mixing respectively powder and water material press 100：15 mass ratio stirs evenly and is pumped into 3D and builds
Printer is built, then squeezes out and obtains the composite material for 3D printing.
Embodiment 2
A kind of composite material for 3D printing, the composite material include powder and water material, wherein
The powder, it is by mass percentage, main composed of the following components：100 mesh grain size gangues 13.78%, 40
Mesh grain size gangue 40%, 10 mesh grain size gangues 30%, ash concrete 16%, hydroxypropyl methyl cellulose 0.01%, polyethylene
Alcohol 0.01% and alkali-resistant glass fibre 0.2%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.84%, acrylic emulsion
0.1% and water-reducing agent 0.06%；
The preparation method is the same as that of Example 1 for the composite material of 3D printing for the present embodiment.
Embodiment 3
A kind of composite material for 3D printing, the composite material include powder and water material, wherein
The powder, it is by mass percentage, main composed of the following components：100 mesh grain size gangues 23.9%, 40 mesh
Grain size gangue 30%, 10 mesh grain size gangues 10%, ash concrete 35%, dispersant 0.05%, polyvinyl alcohol 0.05% and resistance to
Alkali containing glass fibre 1%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.26%, acrylic emulsion
0.44% and water-reducing agent 0.3%；
The preparation method is the same as that of Example 1 for the composite material of 3D printing for the present embodiment.
Embodiment 4
A kind of composite material for 3D printing, the composite material include powder and water material, wherein
The powder, it is by mass percentage, main composed of the following components：100 mesh grain size gangues 22.78%, 40
Mesh grain size gangue 35%, 10 mesh grain size gangues 22%, ash concrete 20%, dispersant 0.01%, 0.01% and of polyvinyl alcohol
Alkali-resistant glass fibre 0.2%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.83%, acrylic emulsion
0.11% and water-reducing agent 0.06%；
The preparation method is the same as that of Example 1 for the composite material of 3D printing for the present embodiment.
Embodiment 5
A kind of composite material for 3D printing, the composite material include powder and water material, wherein
The powder, it is by mass percentage, main composed of the following components：100 mesh grain size gangues 30%, 40 mesh grains
Diameter gangue 30%, 10 mesh grain size gangues 11.46%, ash concrete 28%, dispersant 0.02%, polyvinyl alcohol 0.02% and resistance to
Alkali containing glass fibre 0.5%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.5%, acrylic emulsion
0.3% and water-reducing agent 0.2%；
The preparation method is the same as that of Example 1 for the composite material of 3D printing for the present embodiment.
Experimental example 1
When to show that composite material of the present invention for 3D printing can significantly improve thixotropy and the condensation of printed material
Between, it has been effectively relieved that existing cement-based material thixotropy is bad, setting time slower problem.Existing spy prepares Examples 1 to 5
The obtained composite material for 3D printing carries out mobility (i.e. pumping), setting time, compression strength detection, and result is such as
Shown in following table：
As seen from the above table, the present invention has that good flowing properties, setting time be short, pressure resistance for the composite material of 3D printing
Spend high advantage.Wherein use the electronic jumping table of cement fluidity (also known as instrument for testing fluidity of colloidal cement sand) to the embodiment of the present invention
1~5 composite material for 3D printing being prepared is detected, using 15 vibrations as basic test foundation, slump
Between ranging from 130mm-170mm；The composite material presetting period of 3D printing prepared by the embodiment of the present invention 1~5 10~
Between 30min, final setting time 35min or so has caking property good, and stability is strong, and early strong, high-strength feature can fully expire
Foot building 3D printing construction continuity and the requirement for building intensity；What the embodiment of the present invention 1~5 was prepared is used for 3D printing
Composite material carries out intensity detection, and the composite material of 3D printing of the present invention can reach the compression strength of 20MPa in 8h, after 3 days
Compression strength can reach 30MPa, and compression strength can reach 40Mpa after 28 days.
In conclusion composite material of the present invention for 3D printing is mainly mixed by powder and the two kinds of blending ingredients stirrings of water material
It is even to be made, wherein powder is mainly made of gangue, ash concrete, dispersant, polyvinyl alcohol and alkali-resistant glass fibre, water material master
It to be made of mixing water, acrylic emulsion and water-reducing agent.It is obtained for the compound of 3D printing by above-mentioned powder and water material compounding
Material can significantly improve thixotropy and the setting time of printed material, and existing cement-based material thixotropy has been effectively relieved not
Good, setting time can not be applied and more slowly the problem of 3D printing, meanwhile, using gangue instead of sandstone etc. in powder of the present invention
Framework material turns waste into wealth and significantly reduces the cost of 3D printing composite material of the present invention.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of composite material for 3D printing, which is characterized in that the composite material includes two kinds of components of powder and water material,
Wherein,
The powder, it is by mass percentage, main composed of the following components：Gangue 57.8~83.78%, ash concrete 16~
40%, dispersant 0.01~0.1%, polyvinyl alcohol 0.01~0.1% and alkali-resistant glass fibre 0.2~2%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.2~99.84%, acrylic emulsion
0.1~0.5% and water-reducing agent 0.06~0.3%.
2. the composite material according to claim 1 for 3D printing, which is characterized in that the powder, by quality percentage
It is main composed of the following components than meter：Gangue 63.9~79.78%, ash concrete 20~35%, dispersant 0.01~
0.05%, polyvinyl alcohol 0.01~0.05% and alkali-resistant glass fibre 0.2~1%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.26~99.83%, propylene yogurt
Liquid 0.11~0.44% and water-reducing agent 0.06~0.3%.
3. the composite material according to claim 1 for 3D printing, which is characterized in that the powder, by quality percentage
It is main composed of the following components than meter：Gangue 69.16~74.78%, ash concrete 25~30%, dispersant 0.01~
0.02%, polyvinyl alcohol 0.01~0.02% and alkali-resistant glass fibre 0.2~0.8%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.3~99.7%, acrylic emulsion
0.2~0.4% and water-reducing agent 0.1~0.3%；
Preferably, the powder, it is by mass percentage, main composed of the following components：Gangue 71.46%, ash concrete
28%, dispersant 0.02%, polyvinyl alcohol 0.02% and alkali-resistant glass fibre 0.5%；
The water material, it is by mass percentage, main composed of the following components：Mixing water 99.5%, 0.3% and of acrylic emulsion
Water-reducing agent 0.2%.
4. according to claims 1 to 3 any one of them be used for 3D printing composite material, which is characterized in that the powder with
The mass ratio of water material is 100：13~16.
5. being used for the composite material of 3D printing according to claims 1 to 3 any one of them, which is characterized in that in the powder
The grain size of gangue is 10~200 mesh.
6. the composite material according to claim 5 for 3D printing, which is characterized in that the grain size is 20~40 purposes
Gangue accounts for the 40~50% of gangue gross mass.
7. being used for the composite material of 3D printing according to claims 1 to 3 any one of them, which is characterized in that in the powder
Dispersant be hydroxypropyl methyl cellulose.
8. being used for the composite material of 3D printing according to claims 1 to 3 any one of them, which is characterized in that in the water material
Water-reducing agent be sulfamate water reducer or poly carboxylic acid series water reducer.
9. a kind of preparation method of composite material according to claim 1~8 any one of them for 3D printing, feature exist
In the method specifically includes following steps：
First respectively by two kinds of powder, water material component mixings, then by respectively after mixing powder and water material press 100：13~16
Mass ratio stir evenly and be pumped into 3D building printer, then squeeze out obtain the composite material for 3D printing.
10. a kind of being used for the composite material of 3D printing in 3D printing building field according to claim 1~8 any one of them
Application.
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