CN106220197A - A kind of fire safe type 3D printed material - Google Patents
A kind of fire safe type 3D printed material Download PDFInfo
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- CN106220197A CN106220197A CN201610594787.8A CN201610594787A CN106220197A CN 106220197 A CN106220197 A CN 106220197A CN 201610594787 A CN201610594787 A CN 201610594787A CN 106220197 A CN106220197 A CN 106220197A
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- printed material
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
Abstract
The invention discloses a kind of fire safe type 3D printed material, basis dusty material includes: 60 85 parts of calcium sulphate dihydrates, 50 70 parts of refractory materials, 13 parts of polyvinyl alcohol, 0.5 5 parts of hydroxyethyl celluloses, 0.5 1 parts of silicon dioxide, 0.5 2 parts of α type calcium sulfate, 12 parts of auxiliary agents；Aqueous binder solution includes: 95 parts of distilled water, 2.5 parts of glycerol, 0.5 part of potassium sulfate；0.5 part of isopropanol, 1 part of lauryl sodium sulfate surfactant, 0.5 part of polyvinylpyrrolidone.The present invention, by the improvement of printed material material formula of fighting each other, strengthens its high temperature resistant fire resistance, the good fluidity of material, and the product strength made is higher, may be used for the mould processing in casting field.
Description
Technical field
The present invention relates to 3D and print field, be specifically related to a kind of fire safe type 3D printed material.
Background technology
Three-dimensional fast shaping technology is technology more popular in present manufacturing technology, is a kind of layered manufacturing technology, its
Principle is by adding material creation material object to article layering.It, by discrete path, restriction and the mode obtaining and piling up, passes through
Pile up material superposition and form 3D solid, be combined with computer system, to improve rapid shaping efficiency and precision, go with traditional
Except molding makes a sharp contrast, its technological process mainly includes that threedimensional model structure, approximate processing, slicing treatment, cross section add
Work, cross section superposition, post processing etc..
Wherein 3DP technique uses 3 D stereo molding, by shower nozzle binding agent, the cross section of part is printed upon material powder
Above end, or in layer being sprayed by moulding resin, solidify molding bonded respectively, its forming process is by each two-dimensional section
Overlapping bonding becomes a 3D solid, and the method has and fireballing is a little suitable for manufacturing the parts of various complicated shapes,
And it is pollution-free.
Different rapid shaping techniques has different requirements to moulding material, but quickly precise forming is to 3 D-printing
The requirement of material, moulding material has been largely fixed the success or failure of rapid shaping technique, but existing frequently-used three-dimensional is quickly
There is following defect in moulding material: contains the component being difficult in a large number degrade in (1) material, to environment build-up of pressure；(2) material
Relatively costly, for small business, production cost pressure is higher；(3) mobility of dusty material is poor, it may appear that at mould
The phenomenon of middle buildup, not only affects printing effect, and can cause the rough phenomenon of product surface, affect printing shaping product
Quality；(4) material forming and hardening is relatively slow, affects printing effect and printing precision.
Therefore, how to improve 3D print quality from the improvement of printed material formula, be to be solved the asking of letter in this area
Topic.
Summary of the invention
It is an object of the invention to the problem above overcoming prior art to exist, it is provided that fire safe type 3D printed material, this
The bright improvement by printed material material formula of fighting each other, strengthens its high temperature resistant fire resistance, the good fluidity of material, the product strength made
Higher, may be used for the mould processing in casting field.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of fire safe type 3D printed material, it includes basis dusty material and aqueous binder solution, in parts by weight,
Described basis dusty material includes:
Described aqueous binder solution includes:
Wherein, the bulk density of calcium sulphate dihydrate is 0.7g/cm2, the porosity of sulfate dihydrate calcium powder is 0.72, particle diameter
For 40-150 μm；
It is 2.15s that described aqueous binder solution is coated with 4 glasss of viscosity, and conductivity is 8-8.5 less than 6000 μ s/cm, pH, and surface is opened
Power is 25-30mN/m.
It is further preferred that described refractory material include following in one or more: calcining the low clunch of high alumina, stone
English, quartz sand, the Al in the wherein said low clunch of calcining high alumina2O3>=25%, Fe2O3≤ 1.5%, TiO2≤ 0.8%.
It is further preferred that the granularity of described refractory material is 200-400 mesh.
It is further preferred that described auxiliary agent includes toughener, defoamer, retarder, crack resistence agent.
It is further preferred that described toughener include following in one or more: polypropylene fibre, glass fibre, poly-
Urethane, described polypropylene fibre, a length of 0.1-0.5mm of glass fibre.
It is further preferred that described defoamer include following in one or more: polydimethylsiloxane, cyclohexyl methyl silicon
Oxygen alkane, methylsiloxane.
It is further preferred that described retarder is citric acid, described crack resistence agent include following in one or more: chlorine
Change sodium, potassium chloride, magnesium sulfate, potassium sulfate.
It is further preferred that the degree of polymerization of described polyvinyl alcohol is 1500-2000.
It is further preferred that the particle diameter of described silicon dioxide is 5-50nm, specific surface area ＞ 100m2/g。
The invention has the beneficial effects as follows:
The printed material of the present invention with the addition of refractory material so that 3D printed material has high temperature resistant, fire-resistant property
Can, improve the range of material, may be used in casting mould printing, α type calcium sulfate plays gel in formula
Effect, coordinates with other component so that the preliminary setting rate of gypsum powder improves, meets printed material rapid shaping demand；Add
Polyvinyl alcohol and SiO 2 powder, improve the dispersive property of material, reduce surface can, control powder diameter, it is ensured that
Material powder uniform and smooth, makes powder mix homogeneously, and by controlling the content of each component, prepared shaping speed is fast, formed precision
The 3D printed material high, intensity is good and cheap.
Add retarder, buffered the final setting time of material so that material entirety has longer mixing time and stream
The dynamic time, improve the combination property of shaped article.
The 3D printed material modified based on Gypsum Fibrosum original washing powder of the present invention can be with water based adhesive with the use of, water based adhesive
Agent has the advantage of nontoxic pollution-free, and the surface quality of the shaped article prepared out with dusty material is good, and molding is fast, product
Comprcssive strength preferable.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, the detailed description of the invention of the present invention is shown in detail in by following example.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
Embodiment 1
Disclosing a kind of fire safe type 3D printed material in embodiment 1, the formula of this material is as shown in table 1.
Formula table in table 1 embodiment 1
Embodiment 2
Disclosing a kind of fire-resistant 3D printed material in embodiment 2, the formula of this material is as shown in table 2.
Formula table in table 2 embodiment 2
Embodiment 3
Disclosing a kind of fire-resistant 3D printed material in embodiment 3, the formula of this material is as shown in table 3.
Formula table in table 3 embodiment 3
Comparative example 1
Contrasting in comparative example 1 and embodiment 1, be not added with refractory material in material, remaining is identical, and formula is as shown in table 4.
Formula table in table 4 comparative example 1
Comparative example 2
Comparative example 2 and embodiment 1 contrast, in formula as shown in table 5.
Formula table in table 5 comparative example 2
Concrete, in above-described embodiment 1-3 and in comparative example 1-2, the bulk density of calcium sulphate dihydrate is 0.7g/
cm2, the porosity of sulfate dihydrate calcium powder is 0.72, and particle diameter is 40-150 μm.The physical property of said components so that whole powder
Powder material is smooth and easy at print procedure, occurs without clogging.
It is 2.15s that above-mentioned aqueous binder solution is coated with 4 glasss of viscosity, and conductivity is 8-8.5 less than 6000 μ s/cm, pH, and surface is opened
Power is 25-30mN/m.The degree of polymerization of above-mentioned polyvinyl alcohol is 1500-2000.The particle diameter of above-mentioned silicon dioxide is 5-50nm, compares table
Area ＞ 100m2/g.This binding agent evaporation rate is suitable, and basis powder is had good promotion hardening effect, and printing precision is good,
Speed is fast, and is dried very fast after printing, and good stability is of relatively low cost, and safety non-toxic is tasteless.
Above-mentioned refractory material can select: the calcining low clunch of high alumina, quartz, quartz sand, the most above-mentioned calcining high alumina is low
Al in clunch2O3>=25%, Fe2O3≤ 1.5%, TiO2≤ 0.8%；The granularity of above-mentioned refractory material is 200-400 mesh.
Above-mentioned auxiliary agent includes toughener, defoamer, retarder, crack resistence agent.
Wherein, above-mentioned toughener can select: polypropylene fibre, glass fibre, polyurethane, above-mentioned polypropylene fibre, glass
The a length of 0.1-0.5mm of glass fiber.
Above-mentioned defoamer can select: polydimethylsiloxane, cyclomethicone, methylsiloxane.
Above-mentioned retarder is citric acid, and above-mentioned crack resistence agent can select: sodium chloride, potassium chloride, magnesium sulfate, potassium sulfate.
Performance test
According to the formula in table 1-5, configuring 5 groups of composite powders, often the mixing of group powder fully and is dried, and crosses 200 mesh sieves,
Then five groups of above-mentioned composite powders are carried out 3 D-printing molded test respectively, it is thus achieved that shaped article.
First the firm time of basis powder in four groups of different materials is tested.
Weigh the weight of above-mentioned five composing type products respectively, and on tri-directions of X, Y, Z of five composing type products
Size measures, and calculates relative deformation and the density of shaped article size.Measure the comprcssive strength in X, Y, Z-direction,
Five set products comprcssive strength in the X direction is the strongest, and in Z-direction, comprcssive strength is minimum.
In 3D forming process, Y-direction is running roller moving direction, easily forms staggered floor and stepped defect, and profiled member is at Y
Intensity on direction is less than in X-direction；Z-direction is layer stacked direction, and intensity is minimum, and by material property in Z-direction
Impact maximum, therefore, evaluate the quality of a kind of material, its profiled member prepared intensity most critical in z-direction, therefore,
In this testing example, only the comprcssive strength in profiled member Z-direction is measured.
The most again the surface quality of above-mentioned five composing type products is evaluated, can according to surfacing smooth degree,
Resolution, surface with or without granular sensation, have pore-free, crackle or surface to peel off the foundation as shaped article surface assessment, flat
Cutting and surface quality is divided into 1-10 value, wherein the surface quality of 10 is best.
The product of printing shaping is carried out high temperature resistant, fire resistance test, respectively at 200 DEG C, 600 DEG C, the high temperature of 900 DEG C
Under the conditions of sinter 10 hours, according to different refractory temperatures, observe mould product apparent condition, can be by unchanged, planar light
Slide, have trickle slight crack, have the ranks such as longer slight crack, fracture to carry out fire resistance period evaluation.
Table 6 the performance test results table
As seen from Table 6, embodiment 1 is most preferred embodiment.
Contrast with comparative example 1, printed material with the addition of refractory material so that 3D printed material has high temperature resistant, fire-resistant
Performance, improve the range of material, may be used for casting mould print in, α type calcium sulfate plays solidifying in formula
The effect of colloid, coordinates with other component so that the preliminary setting rate of gypsum powder improves, meets printed material rapid shaping need
Ask；Add polyvinyl alcohol and SiO 2 powder, improve the dispersive property of material, reduce surface energy, control powder grain
Footpath, it is ensured that material powder uniform and smooth, makes powder mix homogeneously, and by controlling the content of each component, prepared shaping speed is fast, one-tenth
The 3D printed material that type precision is high, intensity is good and cheap.
Add retarder, buffered the final setting time of material so that material entirety has longer mixing time and stream
The dynamic time, improve the combination property of shaped article.
Contrast with contrast 2, gypsum powder with the addition of PVA, PVA certain restriction is played in the growth of gypsum crystal
Effect, PVA and drop effect form material as a form of gel, it is possible to the gap of filler plaster crystal so that the interface of shaped article is clear
Washing, product surface is smooth, dimensional accuracy.
With the addition of silicon dioxide in gypsum powder, silicon dioxide can form the network containing micropore in the powder, it is possible to
The drop spurted in absorption fixing print procedure, can either ensure drop infiltration and bonding, can shorten hardening time again,
PVA acts on jointly with silicon dioxide, plays more preferable effect, and PVA can either play absorption role of network, again can be as dioxy
The carrier of SiClx, dispersive property is good, improves the dimensional accuracy of printed product.
With the addition of polyvinylpyrrolidone in aqueous binder solvent, it has excellent adsorptivity, film property, caking property
And biocompatibility, thermal stability is good, adds a small amount of polyvinylpyrrolidone at aqueous binder solvent, not only improves viscous
Knot effect, it is also possible to play the effect of incremental dose.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (9)
1. a fire safe type 3D printed material, it includes basis dusty material and aqueous binder solution, it is characterised in that according to weight
Amount number meter, described basis dusty material includes:
Described aqueous binder solution includes:
Wherein, the bulk density of calcium sulphate dihydrate is 0.7g/cm2, the porosity of sulfate dihydrate calcium powder is 0.72, and particle diameter is 40-
150μm；
It is 2.15s that described aqueous binder solution is coated with 4 glasss of viscosity, and conductivity is 8-8.5 less than 6000 μ s/cm, pH, and surface tension is
25-30mN/m。
A kind of fire safe type 3D printed material the most according to claim 1, it is characterised in that described refractory material includes following
In one or more: calcining the low clunch of high alumina, quartz, quartz sand, the Al in the wherein said low clunch of calcining high alumina2O3
>=25%, Fe2O3≤ 1.5%, TiO2≤ 0.8%.
A kind of fire safe type 3D printed material the most according to claim 2, it is characterised in that the granularity of described refractory material is
200-400 mesh.
A kind of fire safe type 3D printed material the most according to claim 1, it is characterised in that described auxiliary agent include toughener,
Defoamer, retarder, crack resistence agent.
A kind of fire safe type 3D printed material the most according to claim 4, it is characterised in that described toughener include following in
One or more: polypropylene fibre, glass fibre, polyurethane, described polypropylene fibre, a length of 0.1-of glass fibre
0.5mm。
A kind of fire safe type 3D printed material the most according to claim 4, it is characterised in that described defoamer include following in
One or more: polydimethylsiloxane, cyclomethicone, methylsiloxane.
A kind of fire safe type 3D printed material the most according to claim 4, it is characterised in that described retarder is citric acid,
Described crack resistence agent include following in one or more: sodium chloride, potassium chloride, magnesium sulfate, potassium sulfate.
A kind of fire safe type 3D printed material the most according to claim 1, it is characterised in that the degree of polymerization of described polyvinyl alcohol
For 1500-2000.
A kind of fire safe type 3D printed material the most according to claim 1, it is characterised in that the particle diameter of described silicon dioxide is
5-50nm, specific surface area ＞ 100m2/g。
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Cited By (4)
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| CN109261890A (en) * | 2018-09-29 | 2019-01-25 | 共享智能铸造产业创新中心有限公司 | The preparation method of ceramic core printed material and preparation method thereof and ceramic core |
| CN112341217A (en) * | 2020-10-31 | 2021-02-09 | 南京理工大学 | Refractory material for 3D printing and printing method thereof |
| CN112939560A (en) * | 2021-03-31 | 2021-06-11 | 王丽 | Method for 3D printing of pessary |
| CN113462329A (en) * | 2021-07-20 | 2021-10-01 | 宁夏共享化工有限公司 | Binder for 3D printing and preparation method and application thereof |
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Application publication date: 20161214 |