CN108164719A - A kind of selective laser sintering polyurethane material and preparation method thereof - Google Patents
A kind of selective laser sintering polyurethane material and preparation method thereof Download PDFInfo
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- CN108164719A CN108164719A CN201711446800.6A CN201711446800A CN108164719A CN 108164719 A CN108164719 A CN 108164719A CN 201711446800 A CN201711446800 A CN 201711446800A CN 108164719 A CN108164719 A CN 108164719A
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- selective laser
- laser sintering
- polyurethane material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/203—Solid polymers with solid and/or liquid additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of preparation method of selective laser sintering polyurethane material, includes the following steps：Step 1：Polyurethane pellet progress deep cooling crush is obtained into powder particle；Step 2：Powder particle is dried；Step 3：It will be mixed evenly to obtain selective laser sintering polyurethane material by the powder particle, powder flow aid and the coloring agent that are dried to obtain.The manufacturing method of product of the present invention can well solve the problem of product jaundice, meanwhile, black dye is selected, using its good light absorptive, can powder preferably be melted, reduce the gap of product, improve part performance.
Description
Technical field
The invention belongs to increases material manufacturing technology fields, and in particular to a kind of selective laser sintering polyurethane material and its
Preparation method.
Background technology
3D printing technique is the common name of increases material manufacturing technology, be one have Digitized manufacturing, highly flexible and adaptability,
The advanced manufacturing technology for the distinguishing features such as direct CAD model drives, quick, material type is rich and varied, can be by the several of prototype
The combined information of what shape, structure and selected materials establishes digitization descriptive model, these information are output to computer later
The electromechanical integrated manufacturing system of control carries out point-by-point, by-line, the three-dimensional packing molding production 3D solid by face.Relative to tradition
Subtract material manufacture processing technology, increases material manufacturing technology can just pass through without proembryo and mold directly by computer model data
The method being successively superimposed produces any desired physical member, can effectively simplify the fabrication schedule of product, shorten grinding for product
Period processed improves efficiency and reduces cost.3D printing technique is widely used to aerospace, automobile making, mold manufacturing, life
The numerous areas such as object engineering and medical treatment, building, art manufacture.Selective Laser Sintering (SLS) is common currently on the market
A kind of 3D printing method, the method can produce high-precision manufacture parts, by many field extensive uses.
Polyurethane is a kind of emerging high-molecular organic material, is widely used in national economy due to the performance of its brilliance
Various fields, especially in the production of footwear industry.Polyurethane material has water imbibition, easily turns yellow after being long placed in air, so as to
Influence the appearance of product.Existing producer is proposed the TPU that never turns yellow, but price is relatively expensive, and performance can decline.
Invention content
The present invention provides a kind of selective laser sintering polyurethane material and preparation method thereof, by deep cooling crush system
Polyurethane powder is obtained, and adds coloring agent in polyurethane powder and is covered as color, product jaundice can be well solved in this way
The problem of.Meanwhile black dye is selected, using its good light absorptive, can powder preferably be melted, reduce product
Part performance is improved in gap.
The present invention provides a kind of preparation methods of selective laser sintering polyurethane material, include the following steps：
Step 1：Polyurethane pellet progress deep cooling crush is obtained into powder particle；
Step 2：Powder particle is dried；
Step 3：It will be mixed evenly by the powder particle, powder flow aid and the coloring agent that are dried to obtain
To selective laser sintering polyurethane material.
As present invention further optimization scheme, the coloring agent is black dye.
As present invention further optimization scheme, the black dye is carbon black.
As present invention further optimization scheme, the polyurethane pellet is TPU pellets.
As present invention further optimization scheme, the weight of the flow promortor accounts for the 0.2%-0.5% of powder total amount,
The weight of the coloring agent accounts for the 0.1%-2% of powder total amount.
As present invention further optimization scheme, the grain size for obtaining powder particle in step 1 by deep cooling crush is
Less than 150 μm.
As present invention further optimization scheme, the powder diameter of powder particle is obtained by deep cooling crush in step 1
For：D10 is 30um-50um；D50 is 60um-80um；D90 is 130um-150um.
As present invention further optimization scheme, the flow promortor include aerosil, gas phase titanium dioxide,
One or more of methylsiloxane, chlorination siloxanes.
As present invention further optimization scheme, drying steps are specially in step 2：Powder particle is put into temperature
For 80 DEG C -100 DEG C of baking oven, dry more than 2h, it is less than 0.5% to make powder particle water content.
The present invention also provides a kind of selective laser sintering polyurethane materials, are used including above-mentioned selective laser sintering
Polyurethane material.
Selective laser sintering polyurethane material of the present invention and preparation method thereof has the advantages that：
1st, can obtain the powder particle that grain size more concentrates by carrying out deep cooling crush to polyurethane pellet, in this way relative to
The powdering being more advantageous to for other disintegrating process in sintering process；
2nd, by the way that powder particle is dried, the defects of moisture is brought in sintering process in powder can be reduced.Due to
Polyurethane powder has certain water imbibition in itself, is long placed in water suction in air, and moisture can be vaporized into steam after laser heating,
So as to form the gap between powder.And by drying process, the gap that moisture generates in powder can be reduced.
3rd, the TPU that never turns yellow is prepared relative to conventional method, cost is higher and can reduce performance；The present invention passes through deep cooling
It crushes and polyurethane powder is made, and add coloring agent in polyurethane powder and covered as color, system can be well solved in this way
The problem of part turns to be yellow.Meanwhile black dye is selected, using its good light absorptive, can powder preferably be melted, reduce
Part performance is improved in the gap of product.
Specific embodiment
In order to solve the above technical problems, the present invention provides a kind of preparation sides of selective laser sintering polyurethane material
Method, including：
Step 1：Polyurethane pellet progress deep cooling crush is obtained into powder particle；
Specifically, the grain size of powder particle is obtained as 150 μm hereinafter, for instance, it is preferred that passing through deep cooling by deep cooling crush
It crushes and obtains the powder diameter of powder particle and be：D10 is 30um-50um；D50 is 60um-80um；D90 is 130um-150um.
It should be noted that, D10=30um is meant that account for total amount the 10% of below 30um herein；D50=70um is meant that
Account for total amount the 50% of below 70um；D90=130um is meant that account for total amount the 90% of below 130um.
Step 2：Powder particle is dried；
Preferably, powder particle can be put into the baking oven that temperature is 80 DEG C -100 DEG C, dry more than 2h contains powder particle
Water is less than 0.5%.
Step 3：It will be mixed evenly by the powder particle, powder flow aid and the coloring agent that are dried to obtain
To selective laser sintering polyurethane material.
In specific implementation, the polyurethane pellet can be TPU pellets, it could be applicable to the poly- ammonia of other classifications certainly
Ester does not enumerate herein.Further, polyesters can be used, but this method is equally applicable to polyethers in the TPU pellets,
It is polycarbonate-based, the TPU of other classes such as poly caprolactone.Preferably, TPU powder D50 is 70um, which can be preferable
Uniformly accumulation reduces the gap during powdering.
In specific implementation, the flow promortor includes aerosil, gas phase titanium dioxide, methylsiloxane, chlorination
One or more of siloxanes.Preferably, the weight of the flow promortor accounts for the 0.2%-0.5% of powder total amount.
In order to which those skilled in the art is allowed to more fully understand and realizes technical scheme of the present invention, below by way of specific reality
Example is applied to be described in further details technical scheme of the present invention.
Embodiment one：
(a) drawn polyester class TPU pellets are poured into deep cooling crush machine, are filled with liquid nitrogen cooling to -130 DEG C, are kept temperature
Stablize, be 40Hz by the set of frequency of stirring, open charging switch and crush pellet.Finally obtain pellet 10kg, powder diameter D50
For 70um.
(b) the TPU powder being prepared is put into baking oven, sets drying temperature as 90 DEG C, dry 3h has dried sampling
Testing humidity is 0.4%.
(c) dried TPU powder is poured into agitating device, adds in graphite 25g flow promortor aerosil 25g,
1h is stirred, finally obtains the polyurethane powder powder material suitable for selective laser sintering.
Embodiment two：
(a) drawn polyester class TPU pellets are poured into deep cooling crush machine, are filled with liquid nitrogen cooling to -130 DEG C, are kept temperature
Stablize, be 43Hz by the set of frequency of stirring, open charging switch and crush pellet.Finally obtain pellet 10kg, powder diameter D50
For 70um.
(b) the TPU powder being prepared is put into baking oven, sets drying temperature as 90 DEG C, dry 3h has dried sampling
Testing humidity is 0.4%.
(c) dried TPU powder is poured into agitating device, adds in carbon black 25g and flow promortor aerosil
25g stirs 1h, finally obtains the polyurethane powder powder material suitable for selective laser sintering.
Embodiment three：
(a) drawn polyester class TPU pellets are poured into deep cooling crush machine, are filled with liquid nitrogen cooling to -130 DEG C, are kept temperature
Stablize, be 43Hz by the set of frequency of stirring, open charging switch and crush pellet.Finally obtain pellet 10kg, powder diameter D50
For 70um.
(b) the TPU powder being prepared is put into baking oven, sets drying temperature as 90 DEG C, dry 3h has dried sampling
Testing humidity is 0.4%.
(c) dried TPU powder is poured into agitating device, adds in flow promortor aerosil 25g, stir 1h,
Finally obtain the polyurethane powder powder material suitable for selective laser sintering.
Correlated performance is carried out using product obtained by selective laser sintering polyurethane material in one-example IV of embodiment
Test, the table 1 that obtains that test result is as follows.
Table 1, the workpiece obtained by using the selective laser sintering polyurethane material of the offer of one-embodiment of embodiment three
Performance
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
The limitation to the scope of the claims of the present invention is not represented.For those of ordinary skill in the art, present inventive concept is not being departed from
Under the premise of, various modifications and improvements can be made, these belong to protection scope of the present invention, therefore, patent of the present invention
Protection domain should be determined by the appended claims.
Claims (10)
1. a kind of preparation method of selective laser sintering polyurethane material, which is characterized in that include the following steps：
Step 1：Polyurethane pellet progress deep cooling crush is obtained into powder particle；
Step 2：Powder particle is dried；
Step 3：It is selected being mixed evenly by the powder particle, powder flow aid and the coloring agent that are dried to obtain
Selecting property is laser sintered to use polyurethane material.
2. the preparation method of selective laser sintering polyurethane material according to claim 1, which is characterized in that described
Coloring agent is black dye.
3. the preparation method of selective laser sintering polyurethane material according to claim 2, which is characterized in that described
Black dye is carbon black.
4. the preparation method of selective laser sintering polyurethane material according to claim 3, which is characterized in that described
Polyurethane pellet is TPU pellets.
5. the preparation method of selective laser sintering polyurethane material according to claim 4, which is characterized in that described
The weight of flow promortor accounts for the 0.2%-0.5% of powder total amount, and the weight of the coloring agent accounts for the 0.1%-2% of powder total amount.
6. the preparation method of selective laser sintering polyurethane material according to claim 5, which is characterized in that step
The grain size for obtaining powder particle in one by deep cooling crush is less than 150 μm.
7. the preparation method of selective laser sintering polyurethane material according to claim 6, which is characterized in that step
The powder diameter for obtaining powder particle in one by deep cooling crush is：D10 is 30um-50um；D50 is 60um-80um；D90 is
130um-150um。
8. the preparation method of selective laser sintering polyurethane material according to claim 7, which is characterized in that described
Flow promortor includes one or more of aerosil, gas phase titanium dioxide, methylsiloxane, chlorination siloxanes.
9. the preparation method of selective laser sintering polyurethane material according to claim 8, which is characterized in that step
Drying steps are specially in two：Powder particle is put into the baking oven that temperature is 80 DEG C -100 DEG C, dry more than 2h makes powder particle
Water content is less than 0.5%.
10. a kind of selective laser sintering polyurethane material, which is characterized in that including described in any one of claim 1-9
Selective laser sintering polyurethane material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446800.6A CN108164719A (en) | 2017-12-27 | 2017-12-27 | A kind of selective laser sintering polyurethane material and preparation method thereof |
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| CN201711446800.6A CN108164719A (en) | 2017-12-27 | 2017-12-27 | A kind of selective laser sintering polyurethane material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438965A (en) * | 2018-10-17 | 2019-03-08 | 河北英曼卡科技有限公司 | Laser sintered 3D manufacturing technology glass microballoon/polyurethane composite powder |
| CN113667130A (en) * | 2021-08-19 | 2021-11-19 | 郑州大学 | Thermoplastic polyamide elastomer powder for selective laser sintering and preparation method thereof |
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| CN101319075A (en) * | 2008-06-13 | 2008-12-10 | 华中科技大学 | Copolymer based powdered material for selective laser sintering and preparation method thereof |
| WO2015124639A1 (en) * | 2014-02-19 | 2015-08-27 | Dyemansion Gmbh | Method for treating surfaces of plastic objects |
| CN105754334A (en) * | 2016-04-06 | 2016-07-13 | 广东波斯科技股份有限公司 | Selective low-power laser sintered nylon powder and preparation method thereof |
| WO2016203453A1 (en) * | 2015-06-17 | 2016-12-22 | Sinterit Spółka Z Ograniczoną Odpowiedzialnością | Powder composition and method for producing three-dimensional objects by selective laser sintering and/or melting |
| CN106398188A (en) * | 2016-08-31 | 2017-02-15 | 武汉萨普汽车科技有限公司 | Nylon composite powder material for selective laser sintering |
| CN107141769A (en) * | 2017-06-09 | 2017-09-08 | 湖南华曙高科技有限责任公司 | A kind of preparation method of selective laser sintering polyurethane material |
-
2017
- 2017-12-27 CN CN201711446800.6A patent/CN108164719A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319075A (en) * | 2008-06-13 | 2008-12-10 | 华中科技大学 | Copolymer based powdered material for selective laser sintering and preparation method thereof |
| WO2015124639A1 (en) * | 2014-02-19 | 2015-08-27 | Dyemansion Gmbh | Method for treating surfaces of plastic objects |
| WO2016203453A1 (en) * | 2015-06-17 | 2016-12-22 | Sinterit Spółka Z Ograniczoną Odpowiedzialnością | Powder composition and method for producing three-dimensional objects by selective laser sintering and/or melting |
| CN105754334A (en) * | 2016-04-06 | 2016-07-13 | 广东波斯科技股份有限公司 | Selective low-power laser sintered nylon powder and preparation method thereof |
| CN106398188A (en) * | 2016-08-31 | 2017-02-15 | 武汉萨普汽车科技有限公司 | Nylon composite powder material for selective laser sintering |
| CN107141769A (en) * | 2017-06-09 | 2017-09-08 | 湖南华曙高科技有限责任公司 | A kind of preparation method of selective laser sintering polyurethane material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438965A (en) * | 2018-10-17 | 2019-03-08 | 河北英曼卡科技有限公司 | Laser sintered 3D manufacturing technology glass microballoon/polyurethane composite powder |
| CN113667130A (en) * | 2021-08-19 | 2021-11-19 | 郑州大学 | Thermoplastic polyamide elastomer powder for selective laser sintering and preparation method thereof |
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Application publication date: 20180615 |