CN109228349B - One-way heat-conducting film and application thereof on 3D printer heating plate - Google Patents
One-way heat-conducting film and application thereof on 3D printer heating plate Download PDFInfo
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- CN109228349B CN109228349B CN201811332237.4A CN201811332237A CN109228349B CN 109228349 B CN109228349 B CN 109228349B CN 201811332237 A CN201811332237 A CN 201811332237A CN 109228349 B CN109228349 B CN 109228349B
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- heat
- conducting film
- columnar
- heating plate
- printer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/295—Heating elements
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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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
The invention relates to a unidirectional heat-conducting film and application thereof on a 3D printer heating plate. The unidirectional heat-conducting film provided by the invention is composed of the columnar fiber units, the pipe diameter of each columnar fiber unit is easy to adjust, the smaller the columnar fiber unit is, the more accurate the heating surface is, so that the printing precision can be adjusted, the printing efficiency is improved, and the printing precision can be improved while the high heat conduction efficiency is ensured by adopting graphite and graphene materials.
Description
Technical Field
The invention belongs to the technical field of 3D printing, and particularly relates to a unidirectional heat-conducting film and application thereof to a heating plate of a 3D printer.
Background
3D printing (3DP), one of the fast prototyping technologies, is a technology that takes a digital model file as a printing base, and applies a bondable material such as powdered metal, plastic, or clay to construct an object by layer-by-layer printing.
3D printing is typically achieved using digital technology material printers. The method is often used for manufacturing models in the fields of mold manufacturing, industrial design and the like, and is gradually used for directly manufacturing some products, and parts printed by the technology are already available. The technology has applications in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.
In recent years, 3D printing technology is applied to the field of buildings to achieve the purposes of low cost and rapid manufacturing and forming. Gypsum-based 3D printing has become a hot topic.
The heating and curing method is a curing method commonly used by the existing 3D printer, the heating and curing are performed on printed products such as gypsum slurry through a heating bottom plate arranged at the bottom of the 3D printer, and a heat conduction film (generally made of glass material) is arranged between the heating bottom plate and the printed products and used for conducting heat, so that the defects that the heat conduction efficiency is low, the heat is not concentrated, the product curing is uneven, the printing precision is low and the like in the thermal curing 3D printing process are caused.
The invention aims to provide a unidirectional heat-conducting film aiming at the defects of gypsum-based printing in the 3D printing technology in the field of buildings, is particularly suitable for a thermally-cured 3D printing device, and can solve the problems of low heat-conducting efficiency, non-centralized heat, non-uniform curing, low printing precision and the like in the thermally-cured 3D printing process of gypsum slurry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a unidirectional heat-conducting film and application thereof on a heating plate of a 3D printer aiming at the defects in the prior art.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the unidirectional heat-conducting film is formed by closely attaching a plurality of columnar fiber units in parallel, and each columnar fiber unit is composed of a tubular hollow heat insulator and a columnar heat conductor filled in the tubular hollow heat insulator.
According to the scheme, the columnar heat conductor is made of graphite or carbon nano tubes, and the cross section of the columnar heat conductor is one of a circle, a square, a regular hexagon and other regular polygons. The graphite or the carbon nano tube is coaxially extruded to form a columnar fiber bundle, and when the content of the graphite or the carbon nano tube in the columnar fiber bundle reaches a permeation threshold value, the heat is conducted along the diameter direction of the fiber tube with the conduction efficiency far higher than that perpendicular to the diameter direction of the tube, so that unidirectional heat conduction is realized.
According to the scheme, the diameter of the circumscribed circle of the cross section of the columnar heat conductor is 0.1-0.5 mm.
According to the scheme, the heat insulator is polyethylene.
Preferably, the thickness of the tube wall of the insulator is 0.1 mm.
According to the scheme, the thickness of the unidirectional heat-conducting film is 1-10 mm.
The invention also provides application of the unidirectional heat-conducting film on a heating plate of a 3D printer, and the specific use method is as follows: a layer of one-way heat conducting film is arranged between the heating plate of the 3D printer and the 3D printed product. When the heating laser beam irradiates the upper surface of the unidirectional heat conducting film, heat is gathered at one end of the columnar fiber unit, and the graphite or the carbon nano tubes in the columnar fiber unit reach the infiltration threshold value, so that unidirectional heat conduction can be realized, and the heat at one end of the unidirectional heat conducting film can be transferred to the other end along the inside of the columnar fiber unit.
Moisture is contained in the gypsum slurry, and laser beam direct irradiation can take place the scattering on the gypsum slurry surface in the 3D printing process, causes the heat not to concentrate, and heat transfer efficiency is low. The outer walls of the columnar fiber units are made of polyethylene materials, the polyethylene materials have good heat insulation performance, heat is prevented from being transferred in the columnar fiber units, the unidirectional property of heat conduction is ensured, meanwhile, the polyethylene materials are easy to process, and the cost is low.
The invention has the beneficial effects that: the unidirectional heat-conducting film is composed of the columnar fiber units, the pipe diameter of each columnar fiber unit is easy to adjust, the smaller the columnar fiber unit is, the more accurate the heating surface is, the printing precision can be adjusted, the printing efficiency is improved, and the printing precision can be improved while the high heat conduction efficiency is ensured by adopting the graphite and graphene materials. The film material has simple production process and low cost, can overcome the defects of the traditional laser direct contact, and has high industrial value.
Drawings
Fig. 1 is a schematic structural view of a unidirectional thermal conductive film prepared in example 1 of the present invention;
wherein: 1-a columnar heat conductor; 2-a thermal insulator; 3-columnar fiber units.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings.
Example 1
The unidirectional heat-conducting film is 5mm thick and is shown in a schematic structural diagram in figure 1, the unidirectional heat-conducting film is formed by closely attaching a plurality of columnar fiber units in parallel, and each columnar fiber unit 3 is composed of a tubular hollow heat insulator 2 and a columnar heat conductor 1 filled in the tubular hollow heat insulator 2. The columnar heat conductor is made of graphite, the cross section of the columnar heat conductor is a regular hexagon, and the diameter of an external circle of the cross section of the columnar heat conductor is 0.5 mm. The heat insulator is made of polyethylene, and the thickness of the pipe wall of the heat insulator is 0.1 mm.
The specific use method of the unidirectional heat-conducting film on the heating plate of the 3D printer comprises the following steps: set up one deck one-way heat conduction film between 3D printer hot plate and 3D print the product, replace original load-bearing platform. The one-way heat-conducting film can improve the heat conduction efficiency and improve the printing precision.
Claims (5)
1. The application of the one-way heat-conducting film on the heating plate of the 3D printer is characterized in that the one-way heat-conducting film is formed by closely attaching a plurality of columnar fiber units in parallel, each columnar fiber unit is composed of a tubular hollow heat insulator and a columnar heat conductor filled in the tubular hollow heat insulator, the diameter of a circumscribed circle of the cross section of the columnar heat conductor is 0.1-0.5 mm, and the specific use method is as follows: a layer of one-way heat conducting film is arranged between the heating plate of the 3D printer and the 3D printed product.
2. The use of a unidirectional thermal film as claimed in claim 1, wherein the columnar thermal conductor is made of graphite or carbon nanotubes, and has a cross-section of one of a circle, a square, a regular hexagon and other regular polygons.
3. Use of a unidirectional thermal film according to claim 1 on a 3D printer heating plate, wherein the thermal insulator is polyethylene.
4. Use of a unidirectional thermal film according to claim 1 on a 3D printer heating plate, wherein the insulator wall thickness is 0.1 mm.
5. The application of the unidirectional heat-conducting film on a heating plate of a 3D printer, which is characterized in that the thickness of the unidirectional heat-conducting film is 1-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332237.4A CN109228349B (en) | 2018-11-09 | 2018-11-09 | One-way heat-conducting film and application thereof on 3D printer heating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332237.4A CN109228349B (en) | 2018-11-09 | 2018-11-09 | One-way heat-conducting film and application thereof on 3D printer heating plate |
Publications (2)
| Publication Number | Publication Date |
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| CN109228349A CN109228349A (en) | 2019-01-18 |
| CN109228349B true CN109228349B (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811332237.4A Active CN109228349B (en) | 2018-11-09 | 2018-11-09 | One-way heat-conducting film and application thereof on 3D printer heating plate |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110453561A (en) * | 2019-08-14 | 2019-11-15 | 南京林业大学 | Method of the thermal resistance to improve interlaminar bonding performance between reduction asphalt pavement structural layer |
| CN113135045A (en) * | 2021-05-12 | 2021-07-20 | 武汉先同科技有限公司 | Electronic laser stamping equipment and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006060476A2 (en) * | 2004-12-01 | 2006-06-08 | William Marsh Rice University | Fibers comprised of epitaxially grown single-wall carbon nanotubes, and a method for added catalyst and continuous growth at the tip |
| CN106543979A (en) * | 2016-10-26 | 2017-03-29 | 天津大学 | The preparation method of graphite/carbon nanotube fibers beam/Graphene heat conduction laminated film |
| CN207201209U (en) * | 2017-09-20 | 2018-04-06 | 常州富烯科技股份有限公司 | Flexible thermal conductive belt |
| CN108656546A (en) * | 2018-05-09 | 2018-10-16 | 苏州倍丰激光科技有限公司 | Increasing material manufacturing construction platform |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160207263A1 (en) * | 2015-01-16 | 2016-07-21 | Mark Christopher Gordon | Targeted cooling in a 3d printing system |
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- 2018-11-09 CN CN201811332237.4A patent/CN109228349B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006060476A2 (en) * | 2004-12-01 | 2006-06-08 | William Marsh Rice University | Fibers comprised of epitaxially grown single-wall carbon nanotubes, and a method for added catalyst and continuous growth at the tip |
| CN106543979A (en) * | 2016-10-26 | 2017-03-29 | 天津大学 | The preparation method of graphite/carbon nanotube fibers beam/Graphene heat conduction laminated film |
| CN207201209U (en) * | 2017-09-20 | 2018-04-06 | 常州富烯科技股份有限公司 | Flexible thermal conductive belt |
| CN108656546A (en) * | 2018-05-09 | 2018-10-16 | 苏州倍丰激光科技有限公司 | Increasing material manufacturing construction platform |
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