CN110093042A - Building material and preparation method thereof, 3D printing product - Google Patents
Building material and preparation method thereof, 3D printing product Download PDFInfo
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- CN110093042A CN110093042A CN201910484192.0A CN201910484192A CN110093042A CN 110093042 A CN110093042 A CN 110093042A CN 201910484192 A CN201910484192 A CN 201910484192A CN 110093042 A CN110093042 A CN 110093042A
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- China
- Prior art keywords
- wax
- parts
- microwax
- building material
- synthetic wax
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Classifications
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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
-
- 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
- B33Y80/00—Products made by additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention relates to a kind of building materials and preparation method thereof, 3D printing product.The building material includes the following raw material according to mass fraction: 50 parts~70 parts of synthetic wax；10 parts~20 parts of microwax；Cover 2 parts~10 parts of denier ester type waxes；5 parts~20 parts of tackifier；2 parts~10 parts of toughener；0.5 part~2 parts of plasticizer；0.1 part~0.5 part of phase transformation crystal form inducer；0.1 part~0.5 part of phase transformation promotor；Synthetic wax is selected from least one of SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax；Microwax is selected from least one of DNW-160S microwax, DNW-170S microwax, S682 microwax and W445 microwax；It covers denier ester type waxes and is selected from least one of E wax, OP wax and LP wax.The strong and unyielding property of the building material is strong, and needle penetration and shrinking percentage are suitable for forming not soft couch, and fusing point, viscosity are suitable for, and no plug, it is good that wax performance is lost in casting.
Description
Technical field
The present invention relates to 3D printing field of material technology, beat more particularly to a kind of building material and preparation method thereof, 3D
Printing product.
Background technique
Compared with traditional technology, 3D printing technique have time cost it is low, can quickly personalized customization, high complexity can be designed
Structural member, without die sinking, can repeatedly repeatedly sample research etc. advantages.Currently, the 3D printing techniques such as SLA, SLS, DLP and MJP are adopted
Model printing, which is carried out, with materials such as plastics, metal, waxes has been widely used for bullion processing, the processing of dentistry artificial tooth, space flight
The high hot investment casting field such as aviation.Particularly, there is higher precision and reliable using the MJP 3D printing technique of wax material
Casting character and the favor for obtaining market.Wherein, the Projet MJP with MJP technology that U.S. 3D systems company releases
2500w, printer precision reach 16 μm of thickness, and high-throughput, print speed is fast, have FDM type, SLA type or DLP type printer
Incomparable advantage.
However, being applied to the type of wax pattern building material of MJP 3D printing technique and few, and there are cubical contractions
The problem of different aspects such as higher, material is brittle, mistake wax performance is poor, softening point is higher, easy blocking printing nozzle.
Summary of the invention
Based on this, it is necessary to for the problem that traditional building material performance is poor, provide a kind of building material and its system
Preparation Method, 3D printing product.
A kind of building material, including the following raw material according to mass fraction:
The synthetic wax is selected from least one of SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax；
The microwax is in DNW-160S microwax, DNW-170S microwax, S682 microwax and W445 microwax
At least one；
The illiteracy denier ester type waxes is selected from least one of E wax, OP wax and LP wax.
The tackifier are selected from terpene phenolic resin, alkyl phenolic resin, C5 hydrotreated petroleum in one of the embodiments,
At least one of resin and dcpd resin.
The toughener is selected from poly alpha methylstyrene resin, molecular weight 300-1000 in one of the embodiments,
At least one of ethylene propylene copolymer, polycaprolactone and polyisobutene.
In one of the embodiments, the plasticizer in White Mineral Oil, epoxidized soybean oil, glycerol and vaseline extremely
Few one kind.
The phase transformation crystal form inducer is selected from dibenzal sorbitol, bis- (3,4- dimethyl benzenes in one of the embodiments,
Methylene) at least one of sorbierite and dehydroabietic acid alkali metal salt.
The phase transformation promotor is selected from hydroxymethyl cellulose, hydroxyethyl cellulose, benzoic acid in one of the embodiments,
At least one of sodium and Polyethylene Terephthalates.
In one of the embodiments, further include the following raw material according to mass fraction: 0.1 part~1 part of compatilizer and
0.1 part~0.5 part of stabilizer；
The compatilizer is selected from maleic anhydride inoculated polypropylene wax, ethylene acrylic acid co polymer, molecular weight 200-5000
Haloflex and at least one of styrene-ethylene-butylene-styrene block copolymer；
The stabilizer is selected from butylated hydroxy anisole, dibutyl hydroxy toluene, tert-butyl hydroquinone, N- isopropyl-
At least one of N '-diphenyl-para-phenylene diamine and DBPC 2,6 ditertiary butyl p cresol.
The phase transformation crystal form inducer is dehydroabietic acid alkali metal salt in one of the embodiments,；The phase transformation promotes
Agent is Polyethylene Terephthalates.
The present invention also provides a kind of 3D printing products, by being made comprising the building material.
The present invention also provides a kind of preparation methods of building material, include the following steps:
According to mass fraction, by 50 parts~70 parts of synthetic wax, 10 parts~20 parts of microwax and 2 parts~10 parts of illiteracy denier
Ester type waxes mixed melting, later with 5 parts~20 parts of tackifier, 2 parts~10 parts of toughener, 0.5 part~2 parts of plasticizer, 0.1
Part~0.5 part of phase transformation crystal form inducer and 0.1 part~0.5 part of phase transformation promotor, mix at 100 DEG C~110 DEG C, filtering
And retain filtrate to get；
Wherein, the synthetic wax is selected from least one of SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax；
The microwax is in DNW-160S microwax, DNW-170S microwax, S682 microwax and W445 microwax
At least one；
The illiteracy denier ester type waxes is selected from least one of E wax, OP wax and LP wax.
4700 yuan/kilogram of building material purple wax that 3D systems company, the U.S. newly releases, expensive, cubical contraction
Higher (2.2%), and it is more crisp, carry out inconvenience to conveyer belt.And other 3D printing building materials, due to adding in preparation process
Epoxy resin, high durometer polymeric and packing material are entered, the compatibility of these materials and wax is poor, the building material made
Crystallization it is coarse, cause the workpiece surface printed coarse, and contain a large amount of high molecular polymers, hardly possible volatilization decompose, lose wax
Performance is poor, influences the precision for printing product.Separately have, it is micro- that monodisperse polystyrene is added in some 3D printing building materials
Ball is in only in the material dispersity, and softening point is higher, is easy to assemble in 65 DEG C~85 DEG C of printing nozzle stifled
Plug.
Based on this, the present invention selects particular kind of synthetic wax, particular kind of microwax and particular kind of illiteracy denier ester
Wax makees raw material, and with tackifier, toughener, plasticizer, phase transformation crystal form inducer and phase transformation promotor rational proportion, assign construction
The high strong and unyielding property of material, needle penetration and shrinking percentage are suitable for forming not soft couch.And make the melting range of building material narrow, viscosity
It is suitable for the phenomenon that when printing is not in plug.Secondly, the raw material ash content used is below 0.05%, casting mistake wax performance is good,
Without Ash residue, the precision of printing is improved.Meanwhile so that the grain structure densification of building material is tiny, surface is smooth thin
It is greasy.
Detailed description of the invention
Fig. 1 is the flow chart of the preparation method of the building material of an embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, to specific embodiment party of the invention
Formula is described in detail.In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But this hair
Bright to be implemented with being much different from other way described herein, those skilled in the art can be without prejudice in the present invention
Similar improvement is done in the case where culvert, therefore the present invention is not limited by the specific embodiments disclosed below.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
The present invention provides the building material of an embodiment, including the following raw material according to mass fraction:
In a wherein embodiment, synthetic wax is in SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax
It is at least one.The synthetic wax of mentioned kind is harder than common paraffin quality, assigns building material strong rigidity, and melting range
It is narrow, be conducive to building material from the liquid of flowing and be cooled fast to solid-state, and viscosity is suitable for.
In a wherein embodiment, microwax is selected from DNW-160S microwax, DNW-170S microwax, S682 microwax
At least one of with W445 microwax.Above-mentioned microwax branched structure itself is more, and crystallization is tiny, can be embedded in synthetic wax
In, so that loose coarse sheet synthetic wax grain structure is transformed into fine and compact structure, can be improved building material toughness.
In a wherein embodiment, covers denier ester type waxes and be selected from least one of E wax, OP wax and LP wax.Mentioned kind
Illiteracy denier ester type waxes quality is hard and does not lose toughness, assigns the strong and unyielding property of building material.
Particular kind of synthetic wax, particular kind of microwax and particular kind of illiteracy denier ester type waxes is selected to make raw material, and with
It is high to assign building material for tackifier, toughener, plasticizer, phase transformation crystal form inducer, phase transformation promotor and compatilizer rational proportion
Strong and unyielding property, needle penetration and shrinking percentage are suitable for forming not soft couch.And making the melting range of building material narrow, viscosity is suitable for beating
The phenomenon that being not in plug when print.Secondly, the raw material ash content used is below 0.05%, casting mistake wax performance is good, no ash content
Residual, improves the precision of printing.Meanwhile so that the grain structure densification of building material is tiny, the smooth exquisiteness in surface.
Preferably, according to mass fraction meter, the synthetic wax in building material is 65 parts~70 parts, and microwax is 15 parts~18
Part, covering denier ester type waxes is 2 parts~5 parts, and tackifier are 5 parts~12 parts, and toughener is 5 parts~6 parts, and plasticizer is 1 part~1.2 parts,
Phase transformation crystal form inducer is 0.2 part~0.3 part, and phase transformation promotor is 0.2 part~0.3 part；Wherein, synthetic wax is closed selected from SX55R
At at least one of wax, SX60S synthetic wax and SX70 synthetic wax；It is micro- that microwax is selected from DNW-160S microwax, DNW-170S
At least one of brilliant wax, S682 microwax and W445 microwax；Cover at least one of denier ester type waxes in E wax, OP wax and LP wax
Kind.
It is further preferred that the synthetic wax in building material is 65 parts~70 parts, microwax 15 according to mass fraction meter
Part~18 parts, cover denier ester type waxes be 2 parts~5 parts, tackifier be 5 parts~12 parts, toughener be 5 parts~6 parts, plasticizer be 1 part~
1.2 parts, phase transformation crystal form inducer is 0.2 part~0.3 part, and phase transformation promotor is 0.2 part~0.3 part；Wherein, synthetic wax is selected from
At least one of SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax；Microwax is selected from DNW-160S microwax, DNW-
At least one of 170S microwax, S682 microwax and W445 microwax；Denier ester type waxes is covered in E wax, OP wax and LP wax
It is at least one；Phase transformation crystal form inducer is dehydroabietic acid alkali metal salt；Phase transformation promotor is Polyethylene Terephthalates.
In a wherein embodiment, synthetic wax is SX60S synthetic wax, and microwax is W445 microwax, covers denier ester type waxes and is
LP wax, tackifier are C5 hydrogenated petroleum resin, the ethylene propylene copolymer that toughener is polycaprolactone and molecular weight is 300-1000
Object, plasticizer are epoxidized soybean oil, and phase transformation crystal form inducer is dehydroabietic acid alkali metal salt, and phase transformation promotor is poly- terephthalic acids
Glycol ester；According to mass fraction meter, the SX60S synthetic wax in building material is 70 parts, and W445 microwax is 15.3 parts, LP wax
It is 2.0 parts, C5 hydrogenated petroleum resin is 5.2 parts, and polycaprolactone is 1.6 parts, and molecular weight is the ethylene propylene copolymer of 300-1000
Object is 4.0 parts, and epoxidized soybean oil is 1.0 parts, and dehydroabietic acid alkali metal salt is 0.2 part, and Polyethylene Terephthalates 0.3
Part.
Building material obtained by above-mentioned raw materials, needle penetration is more suitable, and shrinking percentage is smaller, no Ash residue, printing
Precision is higher；Meanwhile the strong and unyielding property of molding of building material is more excellent, printing shaping is without weak.
In a wherein embodiment, tackifier are selected from terpene phenolic resin, alkyl phenolic resin, C5 hydrogenated petroleum resin
At least one of with dcpd resin.Addition tackifier make component bonding together, when meeting printing between layers
Cohesive force, prevent printout from cannot form since cohesive force is insufficient.
In a wherein embodiment, toughener is selected from poly alpha methylstyrene resin, molecular weight as the second of 300-1000
At least one of allyl alkene copolymer, polycaprolactone and polyisobutene.The toughness of building material is assigned, further to avoid beating
The workpiece printed off is excessively crisp.
In a wherein embodiment, plasticizer in White Mineral Oil, epoxidized soybean oil, glycerol and vaseline at least one
Kind.The plasticizer of mentioned kind can enhance the plasticity and flexibility of building material.
In a wherein embodiment, phase transformation crystal form inducer is selected from dibenzal sorbitol, bis- (3,4- dimethyl benzene methylenes
Base) at least one of sorbierite and dehydroabietic acid alkali metal salt.So be conducive to above-mentioned synthetic wax, microwax and montanin wax
Heterogeneous nucleation turns when promoting building material cooling from loose coarse flaky crystalline grain structure to the fine and close tiny grain structure of arrangement
Become, improves the toughness of building material, and do not lose rigidity.
In a wherein embodiment, phase transformation promotor be selected from hydroxymethyl cellulose, hydroxyethyl cellulose, sodium benzoate and
At least one of Polyethylene Terephthalates.The phase transformation promotor fusing point of mentioned kind is higher, first crystallizes when cooling, thus
The drop for promoting printing nozzle to come out can be quickly cooled to solid-state, weak without forming.
In a wherein way of example, phase transformation crystal form inducer is dehydroabietic acid alkali metal salt, and phase transformation promotor is poly-
Ethylene terephthalate, so the two synergistic effect, can make building material drop grain density during cooling and shaping
It greatly increases, crystallite dimension refinement, and accelerates crystalline forming, prevent from forming soft couch.
Further include the following raw material according to mass fraction in a wherein embodiment: 0.1 part~1 part of compatilizer and
0.1 part~0.5 part of stabilizer.
In a wherein embodiment, compatilizer is selected from maleic anhydride inoculated polypropylene wax, ethylene acrylic acid co polymer, divides
Son amount is at least one of haloflex and styrene-ethylene-butylene-styrene block copolymer of 200-5000.With
Promote that each raw material component is compatible combines, prevents the defects of printout is loose porous occur when printing.Stabilizer is selected from butyl
Hydroxyanisole, dibutyl hydroxy toluene, tert-butyl hydroquinone, N- isopropyl-N '-diphenyl-para-phenylene diamine and the tertiary fourth of 2,6- bis-
At least one of base paracresol.
An embodiment of the present invention also provides a kind of 3D printing product, by the building material system above-mentioned comprising any one
At.
Referring to Figure 1, an embodiment of the present invention also provides a kind of preparation method of building material, includes the following steps:
S10, according to mass fraction, by 50 parts~70 parts of synthetic wax, 10 parts~20 parts of microwax and 2 parts~10 parts
Cover denier ester type waxes mixed melting.Wherein, synthetic wax in SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax at least one
Kind, microwax in DNW-160S microwax, DNW-170S microwax, S682 microwax and W445 microwax at least one
Kind, it covers denier ester type waxes and is selected from least one of E wax, OP wax and LP wax.
S20, later with 5 parts~20 parts of tackifier, 2 parts~10 parts of toughener, 0.5 part~2 parts of plasticizer, 0.1
Part~0.5 part of phase transformation crystal form inducer and 0.1 part~0.5 part of phase transformation promotor mix at 100 DEG C~110 DEG C, filtering
And retain filtrate to get.
The following are specific embodiments.
The raw material that other in following embodiment are related to can commercial channel acquisition.SX55R synthetic wax, SX60S synthetic wax and
SX70 synthetic wax is purchased from Shell Co. Ltd；DNW-160S microwax and DNW-170S microwax are purchased from southeast oiling company；S682 is micro-
Brilliant wax is purchased from Sha Suo company；W445 microwax is purchased from Sohne our company；Maleic anhydride inoculated polypropylene wax is purchased from German Clariant.
Embodiment 1
70.0g SX60S synthetic wax, 15.3g W445 microwax and 2.0g LP wax are added in reaction kettle, temperature is adjusted
Degree is 100 DEG C, and uniform melt obtains basic wax liquor A.
By 5.2g C5 hydrogenated petroleum resin, 1.6g polycaprolactone, the ethylene propylene copolymer that 4.0g molecular weight is 300-1000
Object, 1.0g epoxidized soybean oil, 0.2g dehydroabietic acid alkali metal salt, 0.3g Polyethylene Terephthalates, 0.1g styrene-second
Alkene-butylene-styrene block copolymer and 0.3g butylated hydroxy anisole are added sequentially in basic wax liquor A, controlled at
110 DEG C, wax liquor B is obtained with the mixing speed stirring 1h of 700r/min.
Wax liquor B is passed through to the bottle,suction filtering of 1 μm of filter core while hot, filtrate is bottled to obtain building material.
Embodiment 2
50.0g SX55R synthetic wax, 18.3g DNW-170S microwax and 7.9g E wax are added in reaction kettle, adjusted
Temperature is 110 DEG C, and uniform melt obtains basic wax liquor A.
By 18.1g terpene phenolic resin, 2.0g poly alpha methylstyrene resin, 2.0g White Mineral Oil, bis- (the 3,4- diformazans of 0.1g
Base benzylidene) sorbierite, 0.5g sodium benzoate, 1.0g maleic anhydride inoculated polypropylene wax and 0.1g tert-butyl hydroquinone add
Enter into basic wax liquor A, controlled at 110 DEG C, wax liquor B is obtained with the mixing speed stirring 2h of 500r/min.
Wax liquor B is passed through to the bottle,suction filtering of 1 μm of filter core while hot, filtrate is bottled to obtain building material.
Embodiment 3
56.2gSX70 synthetic wax, 10.4g S682 microwax, 5.9g OP wax are added in reaction kettle, adjusting temperature is
100 DEG C, uniform melt obtains basic wax liquor A.
By 9.2g dcpd resin, 10.0g alkyl phenolic resin, 2.0g poly alpha methylstyrene resin, 4.2g points
Son amount be the ethylene propylene copolymer of 300-1000,0.5g glycerol, 0.5g dibenzal sorbitol, 0.1g hydroxyethyl cellulose,
0.5g ethylene acrylic acid co polymer and 0.5g 2,6-di-tert-butyl p-cresol are added sequentially in basic wax liquor A, controlled at
100 DEG C, wax liquor B is obtained with the mixing speed stirring 1.5h of 600r/min.
Wax liquor B is passed through to the bottle,suction filtering of 1 μm of filter core while hot, filtrate is bottled to obtain building material.
Embodiment 4
45.0g SX60S synthetic wax, 16.0g SX70 synthetic wax, 5.0g DNW-160S microwax, 6.7g W445 is micro-
Brilliant wax and 9.2g OP wax are added in reaction kettle, and adjusting temperature is 110 DEG C, and uniform melt obtains basic wax liquor A.
By bis- (the 3,4- dimethyl benzene Asias 12.2g C5 hydrogenated petroleum resin, 3.5g polyisobutene, 1.3g vaseline, 0.3g
Methyl) sorbierite, 0.2g hydroxymethyl cellulose, the haloflex and 0.2g N- isopropyl-that 0.4g molecular weight is 200-5000
N '-diphenyl-para-phenylene diamine is added sequentially in basic wax liquor A, controlled at 110 DEG C, is stirred with the mixing speed of 800r/min
1h obtains wax liquor B.
Wax liquor B is passed through to the bottle,suction filtering of 1 μm of filter core while hot, filtrate is bottled to obtain building material.
Embodiment 5
The preparation method is the same as that of Example 1 for the present embodiment building material, and difference is: by 0.3g Polyethylene Terephthalates
Replace with 0.3g hydroxymethyl cellulose.
Comparative example 1
The preparation method is the same as that of Example 1 for the building material of this comparative example 1, and difference is: SX60S synthetic wax being replaced with poly-
Ethylene waxes.
Comparative example 2
The preparation method is the same as that of Example 1 for the building material of this comparative example 2, and difference is: W445 microwax is replaced with 85#
Microwax.
Comparative example 3
The preparation method is the same as that of Example 1 for the building material of this comparative example 3, and difference is: LP wax is replaced with beeswax.
Comparative example 4
The preparation method is the same as that of Example 1 for the building material of this comparative example 4, and difference is: the quality of W445 microwax is
33.5g。
Comparative example 5
The preparation method is the same as that of Example 1 for the building material of this comparative example 5, and difference is: the quality of C5 hydrogenated petroleum resin
For 2.6g.
Comparative example 6
The preparation method is the same as that of Example 1 for the building material of this comparative example 6, and difference is: not containing dehydroabietic acid alkali metal
Salt.
Comparative example 7
The preparation method is the same as that of Example 1 for the building material of this comparative example 7, and difference is: not containing poly- terephthalic acids second two
Alcohol ester.
Examination criteria
Fusing point: the measurement cooling curve method of GB/T 2539-2008 pertroleum wax fusing point；
Kinematic viscosity: GB/T 265-1998 oil product kinematic viscosity measuring method and dynamic viscosity calculating method；
Needle penetration: GB/T 4985-2010 pertroleum wax penetration test method；
Cubical contraction: SH/T 0588-1994 pertroleum wax cubical contraction measuring method；
Linear shrinkage: GB/T 14235.4-1993 investment casting mould materials linear shrinkage ratio measuring method；
Ash content: GB/T 14235.3-1993 investment casting mould materials ash determination method.
The building material that Examples 1 to 5 and comparative example 1~7 obtain is tested for the property, the results are shown in Table 1.
The building material performance comparison of 1 Examples 1 to 4 of table and comparative example 1~7
The building material that Examples 1 to 5 and comparative example 1~7 are obtained is applied to U.S. 3D systems printer
Projet MJP 2500w, investigate printing when and shaped article performance, the results are shown in Table 2.
The building material performance comparison of 2 Examples 1 to 5 of table and comparative example 1~7
As can be seen from Table 1 and Table 2, building material fusing point, kinematic viscosity, hardness and receipts that Examples 1 to 5 is prepared
Shrinkage is moderate, while ash content is lower, and casting character is reliable, and in printing without plug phenomenon, and the finished product printed forms strong and unyielding property
It is good, without weak.Wherein, it is a bit weaker compared with embodiment 1 that the building material that embodiment 5 obtains forms strong and unyielding property.
When SX60S synthetic wax being replaced with polyethylene wax in comparative example 1, obtained building material fusing point is too high, and viscosity is too
Greatly, needle penetration is smaller, blocking spray head is easy in print procedure, and obtained shaping workpiece is more crisp.By W445 in comparative example 2
When microwax replaces with 85# microwax, obtained building material needle penetration is less than normal, and the shaping workpiece printed is more crisp.Comparative example 3
Middle obtained building material needle penetration is bigger than normal when LP wax is replaced with beeswax, is easy to appear in print procedure weak, and obtains
Shaping workpiece it is softer, be easily deformed.The quality of W445 microwax in comparative example 4 is 33.5g, and obtained building material needle enters
It spends bigger than normal, is easy to appear in print procedure weak, and obtained shaping workpiece is softer, is easily deformed.C5 in comparative example 5 adds
The quality of hydrogen Petropols is 2.6g, and obtained building material needle penetration is less than normal, then will appear in print procedure layer and layer it
Between bond the problem of difference, occur being layered and slight crack, and the shaping workpiece printed is more crisp.Dehydroabietic acid is not contained in comparative example 6
When alkali metal salt, obtained building material needle penetration is less than normal, and cubical contraction and linear shrinkage are bigger than normal, influences printing precision,
And the shaping workpiece printed is more crisp.When not containing Polyethylene Terephthalates in comparative example 7, obtained building material is being beaten
Occur once in a while weak during print, and the shaping workpiece printed is partially soft.
Therefore, the present invention selects particular kind of synthetic wax, particular kind of microwax and particular kind of illiteracy denier ester type waxes
Make raw material, and with tackifier, toughener, plasticizer, phase transformation crystal form inducer and phase transformation promotor rational proportion, assign construction material
Expect that high strong and unyielding property, needle penetration and shrinking percentage are suitable for forming not soft couch.And making the melting range of building material narrow, viscosity is suitable
Preferably, the phenomenon that being not in plug when printing.Secondly, the raw material ash content used is below 0.05%, casting mistake wax performance is good, nothing
Ash residue improves the precision of printing.Meanwhile so that the grain structure densification of building material is tiny, the smooth exquisiteness in surface.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of building material, which is characterized in that including the following raw material according to mass fraction:
The synthetic wax is selected from least one of SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax；
The microwax in DNW-160S microwax, DNW-170S microwax, S682 microwax and W445 microwax extremely
Few one kind；
The illiteracy denier ester type waxes is selected from least one of E wax, OP wax and LP wax.
2. building material according to claim 1, which is characterized in that the tackifier are selected from terpene phenolic resin, alkyl
At least one of phenolic resin, C5 hydrogenated petroleum resin and dcpd resin.
3. building material according to claim 1, which is characterized in that the toughener is selected from poly alpha methylstyrene tree
At least one of rouge, ethylene propylene copolymer, polycaprolactone and polyisobutene that molecular weight is 300-1000.
4. building material according to claim 1, which is characterized in that the plasticizer be selected from White Mineral Oil, epoxidized soybean oil,
At least one of glycerol and vaseline.
5. building material according to claim 1, which is characterized in that the phase transformation crystal form inducer is selected from two benzal sorbs
Alcohol, bis- (3,4- dimethylbenzylidene) at least one of sorbierites and dehydroabietic acid alkali metal salt.
6. building material according to claim 1, which is characterized in that the phase transformation promotor be selected from hydroxymethyl cellulose,
At least one of hydroxyethyl cellulose, sodium benzoate and Polyethylene Terephthalates.
7. building material according to claim 1, which is characterized in that further include the following raw material according to mass fraction: 0.1
Part~1 part of compatilizer and 0.1 part~0.5 part of stabilizer；
The compatilizer is selected from maleic anhydride inoculated polypropylene wax, ethylene acrylic acid co polymer, the chlorine that molecular weight is 200-5000
Change at least one of polyethylene and styrene-ethylene-butylene-styrene block copolymer；
The stabilizer is selected from butylated hydroxy anisole, dibutyl hydroxy toluene, tert-butyl hydroquinone, N- isopropyl-N '-benzene
At least one of base p-phenylenediamine and DBPC 2,6 ditertiary butyl p cresol.
8. building material according to claims 1 to 7, which is characterized in that the phase transformation crystal form inducer is dehydroabietic acid
Alkali metal salt；The phase transformation promotor is Polyethylene Terephthalates.
9. a kind of 3D printing product, which is characterized in that it comprising building material according to any one of claims 1 to 8 by being made.
10. a kind of preparation method of building material, which comprises the steps of:
According to mass fraction, by 50 parts~70 parts of synthetic wax, 10 parts~20 parts of microwax and 2 parts~10 parts of illiteracy denier ester type waxes
Mixed melting, later with 5 parts~20 parts of tackifier, 2 parts~10 parts of toughener, 0.5 part~2 parts of plasticizer, 0.1 part~
0.5 part of phase transformation crystal form inducer and 0.1 part~0.5 part of phase transformation promotor, mix at 100 DEG C~110 DEG C, filter and protect
Reserved filtrate to get；
Wherein, the synthetic wax is selected from least one of SX55R synthetic wax, SX60S synthetic wax and SX70 synthetic wax；
The microwax in DNW-160S microwax, DNW-170S microwax, S682 microwax and W445 microwax extremely
Few one kind；
The illiteracy denier ester type waxes is selected from least one of E wax, OP wax and LP wax.
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