CN107011650A - Inexpensive selective laser sintering nylon composite powder and its application method - Google Patents
Inexpensive selective laser sintering nylon composite powder and its application method Download PDFInfo
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- CN107011650A CN107011650A CN201710010152.3A CN201710010152A CN107011650A CN 107011650 A CN107011650 A CN 107011650A CN 201710010152 A CN201710010152 A CN 201710010152A CN 107011650 A CN107011650 A CN 107011650A
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- nylon composite
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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
- C08K7/00—Use of ingredients characterised by shape
-
- 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
- B33Y10/00—Processes of additive manufacturing
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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
- 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
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of inexpensive selective laser sintering nylon composite powder, the nylon composite powder is made up of the raw material of following mass percent, talcum powder 18%~25%, and surplus is nylon powder PA12.Sintering characteristic after being blended using talcum powder and nylon powder PA12, printed on the powder sintered formers of EOS P395, by adjusting preheating temperature, sweep speed, the parameters such as laser power, it is sintering finished to have reached stable shaping, precision is high, the good characteristic in surface, satisfaction is not strict with to molding part pi of strength, such as video display, hand is touched, costly, the demand in the fields such as intention class and engineering sample such as exhibition, so as to reduce cost, realize material cost reduction by more than 50%, the invention also discloses a kind of application method of inexpensive selective laser sintering nylon composite powder.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of inexpensive selective laser sintering is multiple with nylon
Powder is closed, a kind of application method of inexpensive selective laser sintering nylon composite powder is further related to.
Background technology
Selective Laser Sintering is because have the outstanding advantages such as moulding material range of choice is wide, application field is wide,
As international research emphasis, foreign countries have many colleges and universities, scientific research institution and company carrying out the research and development of this technology,
Austin universities, DTM companies, the EOS Corp. of Germany in such as U.S., the at present external research and development to this technology mainly collect
In in terms of moulding material and moulding process.
Nylon material has the advantages that wear-resisting, tough compared with general material, can pass through Selective Laser Sintering
The quick mock-up or function part for producing new product, product design checking, performance test are directly carried out for designer.So
And with conventional nylon dusty material direct sintering functor, very serious contraction can occur for product in sintering process and warpage becomes
Shape, it is impossible to meet use requirement.
In recent years, substantial amounts of work has been carried out around nylon material both at home and abroad.External DTM companies and EOS Corp. are all by Buddhist nun
Imperial powder is used as laser sintered leading material.DOT companies are proposed the seriation agglomerated material using nylon powder as matrix
DuraForm、Standard Nylon、DuraForm GF、ProtoFormTMComposite, Copper PA etc.；EOS Corp.
Also there is the agglomerated material similar with DuraForm, DuraForm GF.Because this kind of agglomerated material is all patented product, document report
Road is less.The country there is no matured product in terms of high performance nylon material.The application of this respect rapid shaping technique is engaged in mostly
Unit is the former and supporting moulding material using external import, expensive, and also wants additional materials technical patent
Usage charges, use cost is high, is unfavorable for the popularization and application of the technology.In recent years, rapid prototyping material exploitation unit in part was to choosing
Selecting property is laser sintered to conduct a preliminary study work with nylon material, but the material studied is also suitable from engineering application
Gap, the domestic nylon material that there is no maturation at present can be used for laser sintered acquisition high-performance prototype product.
It is external to make prototype and function part, the laser sintering rapid forming nylon powder developed using nylon powder
Fusing point requires high more than 180 DEG C to sinter molding condition：1) require that heating face temperature temperature difference is less than 3 DEG C；2)
Protective atmosphere must be added, in case nylon powder is aoxidized in sintering process；3) external nylon powder sinter molding is required and special quick
Former is supported the use, and equipment is expensive with material, and such as U.S. DTM is sintered into German EOS Corp. for nylon powder
Type equipment is more than 2,800,000 yuan, and per kilogram nylon powder price is 100 dollars.
The content of the invention
The deficiency that the purpose of the present invention exists aiming at above-mentioned prior art, by entering to industrial nylon powder PA12
There is provided a kind of inexpensive selective laser sintering nylon composite powder for row physical modification and chemical modification.
The present invention also provides a kind of application method of inexpensive selective laser sintering nylon composite powder.
The technical solution adopted in the present invention is：A kind of inexpensive selective laser sintering nylon composite powder, it is described
Nylon composite powder is made up of the raw material of following mass percent, talcum powder：18%-25%, surplus is nylon powder PA12.
In a kind of preferred embodiment of the invention, the mesh number of the talcum powder is more than 325 mesh, and its particle diameter is less than 45 μm.
In a kind of preferred embodiment of the invention, the talcum powder is the paint-grade talc powder that percent of pass is 98%, and it is applied
Expect the particle structure in the form of sheets of level talcum powder.
A kind of another technical scheme that the present invention is used, inexpensive selective laser sintering nylon composite powder makes
With method, comprise the following steps：
S1, nylon powder PA12 and talcum powder sieved in reciprocating sieve respectively, obtain the PA12 that mesh number is 250~400 mesh
Powder, and mesh number are more than the talcum powder of 325 mesh；
S2, by high speed agitator, talcum powder, nylon powder PA12 are well mixed according to mass percent, nylon is obtained
Composite powder；
S3, by above-mentioned nylon composite powder on EOSP395 printers through 180 DEG C/1.5h preheat after sinter molding, prepare
Technological parameter is：Laser power 18W, sweep speed 3000mm/S, sinter spacing 0.12mm, sinter layer thickness 0.12mm.
Compared to prior art, the device have the advantages that：
1st, nylon composite powder of the invention, belongs to general industry nylon powder PA12 and the family's coatings of market sale
Level talcum powder, the talcum powder that nylon composite powder is added its be to dutiable value market sale general industry nylon powder PA12
The 1/4 of unit price is even lower, greatly reduces the cost of raw material, realizes material cost reduction by more than 50%, substitutes completely
PA2200 powder expensive EOS, while realizing stable printing, meets application demand, be a kind of high-performance suitable for SLS,
Low cost new nylon composite powder end.
2nd, using the sintering characteristic after talcum powder and nylon powder PA12 blendings, on the powder sintered formers of EOS P395
Printed, make the sintering finished characteristic for having reached that stable shaping, precision height, surface are good, meet to molding part strength character
Index is not strict with, and such as video display, hand are touched, cosplay, the need in exhibition intention class and engineering sample etc. field
Ask.
Brief description of the drawings
Fig. 1 is the four direction floor map of octagon plane.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of inexpensive selective laser sintering nylon composite powder, the nylon composite powder is by following quality percentage
The raw material composition of ratio, talcum powder：18%~25%, surplus is nylon powder PA12.
The nylon powder PA12 mesh numbers are 250~400 mesh, and its particle diameter is 38~58 μm.
The mesh number of the talcum powder is more than 325 mesh, and its particle diameter is less than 45 μm.Specific talcum powder is that percent of pass is 98%
Paint-grade talc powder, the particle of its paint-grade talc powder structure in the form of sheets.
A kind of inexpensive selective laser sintering application method of nylon composite powder, comprises the following steps：
S1, nylon powder PA12 and talcum powder sieved in reciprocating sieve respectively, obtain the PA12 that mesh number is 250~400 mesh
Powder, and mesh number are more than the talcum powder of 325 mesh；
S2, by high speed agitator, talcum powder, nylon powder PA12 are well mixed according to mass percent, nylon is obtained
Composite powder；
S3, by above-mentioned nylon composite powder on EOSP395 printers through 180 DEG C/1.5h preheat after sinter molding, prepare
Technological parameter is：Laser power 18W, sweep speed 3000mm/S, sinter spacing 0.12mm, sinter layer thickness 0.12mm.
In S3, mixed powder realizes stable printing on EOS P395 printers, detect finished product dimensional accuracy and
Surface smoothness.
With reference to embodiment, that the invention will be further described is as follows.
Embodiment 1
To nylon powder PA12 and paint-grade talc powder more than 300 mesh of the common sale in market, by pretreatment, select
The nylon powder PA12 of 300 mesh, the talcum powder of 350 mesh, according to mass percent nylon powder PA12：Talcum powder=80.5：19.5 ratios
Example is well mixed, printing standard tensile specimen, bend specimen and octagon accuracy test sample (Fig. 1) as depicted, draws
Stretch specimen size and meet GB/T1040, detect the dimensional accuracy of finished product and stretching, (test result is shown in Table in 1,2 bending strength
1#Test data), while the specific exemplar in kind of printing, estimates the actual effects such as surface smoothness.
Embodiment 2
To nylon powder PA12 and paint-grade talc powder more than 300 mesh of the common sale in market, by pretreatment, select
The nylon powder PA12 of 320 mesh, the talcum powder of 380 mesh, according to mass percent nylon powder PA12：Talcum powder=79.7：20.3 ratios
Example is well mixed, printing standard tensile specimen, bend specimen and octagon accuracy test sample (Fig. 1) as depicted, draws
Stretch specimen size and meet GB/T1040, detect the dimensional accuracy of finished product and stretching, (test result is shown in Table in 1,2 bending strength
2#Test data), while the specific exemplar in kind of printing, estimates the actual effects such as surface smoothness.
Embodiment 3
To nylon powder PA12 and paint-grade talc powder more than 300 mesh of the common sale in market, by pretreatment, select
The nylon powder PA12 of 350 mesh, the talcum powder of 350 mesh, according to mass percent nylon powder PA12：Talcum powder=77.2：22.8 ratios
Example is well mixed, printing standard tensile specimen, bend specimen and octagon accuracy test sample (Fig. 1) as depicted, draws
Stretch specimen size and meet GB/T1040, detect the dimensional accuracy of finished product and stretching, (test result is shown in Table in 1,2 bending strength
3#Test data), while the specific exemplar in kind of printing, estimates the actual effects such as surface smoothness.
Embodiment 4
To nylon powder PA12 and paint-grade talc powder more than 300 mesh of the common sale in market, by pretreatment, select
The nylon powder PA12 of 380 mesh, the talcum powder of 400 mesh, according to mass percent nylon powder PA12：Talcum powder=76.5：23.5 ratios
Example is well mixed, printing standard tensile specimen, bend specimen and octagon accuracy test sample (Fig. 1) as depicted, draws
Stretch specimen size and meet GB/T1040, detect the dimensional accuracy of finished product and stretching, (test result is shown in Table in 1,2 bending strength
4#Test data), while the specific exemplar in kind of printing, estimates the actual effects such as surface smoothness.
The octagon printout dimensional accuracy of table 1
The nylon composite powder of table 2 end the performance test results
| Numbering | Nylon composite powder end composition | Tensile strength | Bending strength |
| 1 | PA12：Talcum powder=80.5：19.5 | 35.5Mpa | 39.8Mpa |
| 2 | PA12：Talcum powder=79.7：20.3 | 36.0Mpa | 40.2Mpa |
| 3 | PA12：Talcum powder=77.2：22.8 | 38.9Mpa | 41.0Mpa |
| 4 | PA12：Talcum powder=76.5：23.5 | 37.7Mpa | 40.5Mpa |
The present invention adds talcum powder from nylon powder, after EOS P395 selective laser sintering and mouldings, meets to molding part
Pi of strength is not strict with, and such as video display, hand are touched, Coplay, the exhibition neck such as intention class and engineering sample
The demand in domain, so as to reduce cost.
Above-described embodiment, simply presently preferred embodiments of the present invention, not for limiting the practical range of the present invention, thus it is all with
The equivalent variations that content described in the claims in the present invention is done, all should be included within scope of the invention as claimed.
Claims (5)
1. inexpensive selective laser sintering nylon composite powder end, it is characterised in that the nylon composite powder is by following
The raw material composition of mass percent, talcum powder 18%~5%, surplus is nylon powder PA12.
2. inexpensive selective laser sintering according to claim 1 nylon composite powder end, it is characterised in that described
Nylon powder PA12 mesh numbers are 250~400 mesh, and its particle diameter is 38~58 μm.
3. inexpensive selective laser sintering according to claim 2 nylon composite powder end, it is characterised in that described
The mesh number of talcum powder is more than 325 mesh, and its particle diameter is less than 45 μm.
4. inexpensive selective laser sintering according to claim 3 nylon composite powder end, it is characterised in that described
Talcum powder is the paint-grade talc powder that percent of pass is 98%, the particle of its paint-grade talc powder structure in the form of sheets.
5. the application method at inexpensive selective laser sintering nylon composite powder end, it is characterised in that comprise the following steps：
S1, nylon powder PA12 and talcum powder sieved in reciprocating sieve respectively, obtain the PA12 powder that mesh number is 250~400 mesh, and
Mesh number is more than the talcum powder of 325 mesh；
S2, by high speed agitator, talcum powder, nylon powder PA12 are well mixed according to mass percent, obtain nylon be combined
Powder；
S3, by above-mentioned nylon composite powder on EOSP395 printers through 180 DEG C/1.5h preheat after sinter molding, preparation technology
Parameter is：Laser power 18W, sweep speed 3000mm/S, sinter spacing 0.12mm, sinter layer thickness 0.12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010152.3A CN107011650A (en) | 2017-01-06 | 2017-01-06 | Inexpensive selective laser sintering nylon composite powder and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010152.3A CN107011650A (en) | 2017-01-06 | 2017-01-06 | Inexpensive selective laser sintering nylon composite powder and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107011650A true CN107011650A (en) | 2017-08-04 |
Family
ID=59440224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010152.3A Pending CN107011650A (en) | 2017-01-06 | 2017-01-06 | Inexpensive selective laser sintering nylon composite powder and its application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3659785A1 (en) * | 2018-11-29 | 2020-06-03 | Ricoh Company, Ltd. | Powder for forming three-dimensional object, forming device, forming method, and powder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980698A (en) * | 2014-04-30 | 2014-08-13 | 中国科学院化学研究所 | High-viscosity nylon powder for 3D printing and preparation method thereof |
| 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 |
-
2017
- 2017-01-06 CN CN201710010152.3A patent/CN107011650A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980698A (en) * | 2014-04-30 | 2014-08-13 | 中国科学院化学研究所 | High-viscosity nylon powder for 3D printing and preparation method thereof |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 汪艳等: "滑石粉填充尼龙12的选择性激光烧结成型", 《现代塑料加工应用》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3659785A1 (en) * | 2018-11-29 | 2020-06-03 | Ricoh Company, Ltd. | Powder for forming three-dimensional object, forming device, forming method, and powder |
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Application publication date: 20170804 |
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