CN105238041B - A kind of nylon powder material and preparation method thereof for selective laser sintering - Google Patents
A kind of nylon powder material and preparation method thereof for selective laser sintering Download PDFInfo
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- CN105238041B CN105238041B CN201510690841.4A CN201510690841A CN105238041B CN 105238041 B CN105238041 B CN 105238041B CN 201510690841 A CN201510690841 A CN 201510690841A CN 105238041 B CN105238041 B CN 105238041B
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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Abstract
The present invention provides a kind of nylon powder material and preparation method thereof for selective laser sintering, the nylon powder material includes each component of following parts by weight: 50-80 parts of nylon powder, 1-20 parts of coloring resin agent, 0.05-2 parts of dispersing agent, 0.1-1.5 parts of surface modifier, 0.5-2 parts of antioxidant, 0.1-1.5 parts of light stabilizer.Nylon powder material provided by the present invention for selective laser sintering is colored, the nylon powder material of the colour can be by SLS technology in the case where not needing to post-process printed product, it is uniform that straight forming goes out color, the 3D printing product to vary in color can satisfy each field client for the different demands of product colour.
Description
Technical field
The present invention relates to 3D printing technique fields, more particularly to a kind of nylon powder material for selective laser sintering
Material and preparation method thereof.
Background technique
Selective laser sintering (Selective Laser Sintering, SLS) technology belongs to rapid prototyping and manufacture
One of (rapid prototyping&manufacturing, RP&M) technology, be it is a kind of by CAD with
Manufacture is superimposed manufacturing theory using layering, is Three-dimensional Entity Components by dusty material direct forming, not multiple by formation of parts shape
The limitation of miscellaneous degree is not required to the technology of any moulds of industrial equipment.SLS technology moulding material is very extensive, including macromolecule, metal,
Ceramic powder material etc., wherein high molecular material has laser sintering (SLS) temperature low, required compared with metal, ceramic material
The advantages that laser power is small, sintered part precision is high becomes and applies earliest, and applies most, most successful SLS moulding material,
Occupied an important position in SLS moulding material, the diversity and various modification technologies of kind and performance be also it SLS at
The application in shape field provides wide space.Currently, the high molecular material for SLS technology is mainly thermal plastic high polymer material
Material and its composite material, wherein polyamide (i.e. nylon) dusty material is most widely used.
Currently, the nylon material for SLS is micron-sized powder, in traditional method for processing forming and rapid shaping side
Macromolecule raw material used in method are mostly pellet, silk or strands, for the macromolecule of the forms such as pellet, silk or strands
Material coloring is all made of be blended with colorant high-temperature fusion after this common molding procedure such as squeezed out or be granulated.And for answering
It for nylon material for SLS technology, is limited by its flouring technology (solvent precipitation method), is carried out in raw material formative stage
Coloring has larger difficulty.So the product that SLS technology is prepared at present is the primary colors i.e. white of nylon powder material, face
Color is more single, in general, needing to carry out at later period coloring SLS product to meet requirement of the every field for product appearance
Reason generally uses following two method: 1, selection carries out soaking and dyeing with water solubility/oil-soluble dyes, and coloring effect is by dyestuff
The influence of dissolubility and dispersibility, easily occurs that shade is different, or even the bad phenomenon of decoloration；2, on painting to product
Color processing, usual nylon products need to first spray one layer of priming paint, then spray surface layer colored paint, this method is easy to improve the tinting strength, tinting power on its surface
Cause the size of SLS product bigger than normal, product higher for dimension precision requirement is not easy using this method.Both the above method expends
A large amount of people, when, cost, coloring effect is also irregular.
Summary of the invention
To make up for the shortcomings of the above existing technologies, the present invention proposes a kind of colored nylon for selective laser sintering
Dusty material and preparation method thereof.
Technical problem of the invention is resolved by technical solution below:
A kind of nylon powder material for selective laser sintering, each component including following parts by weight:
Preferably, the nylon powder is selected from least one of PA6, PA66, PA1010, PA11 and PA12.
Preferably, the coloring resin agent selects inorganic pigment.
Preferably, the partial size of the nylon powder material obtained is 10-150 μm.
Preferably, the partial size of the coloring resin agent is between 0.01~1 μm.
Preferably, the surface modifier is fatty alcohol polyoxyethylene ether, alkyl phenol polyoxyethylene ether, γ-(metering system
Acyl-oxygen) propyl trimethoxy silicane, gamma-aminopropyl-triethoxy-silane, in γ-glycidyl ether oxygen propyl trimethoxy silicane
At least one.
Preferably, the dispersing agent is vapor phase method aluminium oxide, white carbon black, titanium dioxide, kaolin, talcum powder, mica powder
At least one of.
Preferably, the antioxidant is the composite antioxidant of phenolic antioxidant and sulphur ester antioxidant composition, the phenols
The dosage of antioxidant is the 55-70% of composite antioxidant total weight, and the dosage of sulphur ester antioxidant is composite antioxidant total weight
30-45%.
Preferably, the light stabilizer is hindered amine light stabilizer.
A kind of preparation method of the nylon powder material for selective laser sintering, includes the following steps:
(1) surface modifier is dissolved in the solution for being configured to mass concentration 2~3% in organic solvent, adds resin
Toner dispersion mixing is uniform, is ground in the ball mill after dry, is sieved, obtains the coloring resin agent powder that surface was modified
End；
(2) coloring resin agent powder, the dispersing agent, antioxidant for being modified surface obtained in nylon powder, step (1)
After mixing evenly with light stabilizer, it is sieved, obtains the nylon powder material.
The beneficial effect of the present invention compared with the prior art includes:
Nylon powder material provided by the present invention for selective laser sintering is colored, the nylon powder of the colour
Material can be by SLS technology in the case where not needing to post-process printed product, and it is uniform that straight forming goes out color, face
The different 3D printing product of color can satisfy each field client for the different demands of product colour.By the present invention in that resin
After colorant and micron-sized nylon powder material are sufficiently mixed, achieve the effect that as being dispersed in substrate material melt, from
And effect that light is equably scattered and absorbed is generated, and it can form to obtain by SLS technology bright in luster, gloss is uniform,
The high SLS product of dimensional accuracy.Meanwhile material preparation process is simple and environmentally-friendly pollution-free, improves the color multiplicity of SLS product
Property, and SLS product cost is reduced to a certain extent.
Specific embodiment
The following further describes the present invention in combination with preferred embodiments.
The present invention provides a kind of nylon powder material for selective laser sintering, in a specific embodiment, the Buddhist nun
Imperial dusty material includes each component of following parts by weight: 50-80 parts of nylon powder, 1-20 parts of coloring resin agent, and dispersing agent 0.05-
2 parts, 0.1-1.5 parts of surface modifier, 0.5-2 parts of antioxidant, 0.1-1.5 parts of light stabilizer.
The present invention also provides a kind of preparation methods of above-mentioned nylon powder material for selective laser sintering, including such as
Lower step: surface modifier (1) is dissolved in the solution for being configured to mass concentration 2~3% in organic solvent, adds coloring resin
Agent dispersion mixing is uniform, is ground in the ball mill after dry, is sieved, obtains the coloring resin agent powder that surface was modified；
(2) coloring resin agent powder, dispersing agent, antioxidant and the light being modified surface obtained in nylon powder, step (1) are stablized
After mixing evenly, sieving obtains the nylon powder material, and the partial size of the nylon powder material is 10-150 μm for agent.
Below by way of some embodiment and comparative examples, the present invention will be described in detail.
Embodiment 1
Surface modifier (using γ-(methacryloxypropyl) propyl trimethoxy silicane in this example) 250g is taken, is dissolved in
In 9750g dehydrated alcohol, the solution that mass concentration is 2.5% is obtained；Coloring resin agent (such as iron oxide yellow) powder 2000g of extracting yellow,
It adds in above-mentioned solution, is dispersed in high speed disperser, be allowed to uniformly mixed, then drying 24 is small in air dry oven
When, ball-milling treatment crosses 300 meshes, obtains the coloring resin agent powder that surface was modified.
Nylon is taken (to add in machine mixer in this example using PA66) powder 3000g, then successively into machine mixer
Above-mentioned treated coloring resin agent powder 150g, dispersing agent (using vapor phase method aluminium oxide in this example) 15g, antioxidant is added
It (is used in this example: (dimethyl aminomethyl) phenol of 2,6- di-t-butyl -4 of 60wt% and the thio-2 acid two (18 of 40wt%
Alcohol) the compound composite antioxidant of ester) 30g, light stabilizer (in this example use bis- (2,2,6,6- tetramethyl-piperidyl) decanedioic acid
Ester) 15g, it is uniformly mixed, after 120 meshes, obtains colored nylon powder material.
Colored nylon dusty material obtained above, working process parameter are processed in SLS equipment are as follows: laser power 30W,
Scanning speed 20mm/h, be sintered spacing 0.5mm, 120 μm of sinter layer thickness, 158 DEG C of preheating temperature.
In some other embodiment, acceptable preferably at least one of following scheme:
Nylon powder can be selected from least one of PA6, PA66, PA1010, PA11 and PA12.
Coloring resin agent selects inorganic pigment, and for high temperature resistance at 300 DEG C or more, embodiment 1 is by taking yellow as an example, into one
Step can also be other colors, such as inorganic pigment may be iron oxide yellow, carbon iron oxide red, chromium oxide, ultramarine, carbon iron oxide red, chrome yellow,
At least one of manganese violet, molybdate red, titan yellow, titanium brown, cobalt blue, cobalt green, titanium white, zinc oxide, zinc sulphide and bismuth Huang etc..
The partial size of coloring resin agent is between 0.01~1 μm, can be spherical or subsphaeroidal with preferred configuration further
Coloring resin agent.
The partial size of obtained nylon powder material is 10-150 μm, and (particle size range of selected feedstock nylon powder is 1-
It 1000 μm, can further preferably 5-200 μm).
Surface modifier can be fatty alcohol polyoxyethylene ether, alkyl phenol polyoxyethylene ether, γ-(methacryloxypropyl) third
Base trimethoxy silane, gamma-aminopropyl-triethoxy-silane, in γ-glycidyl ether oxygen propyl trimethoxy silicane at least
It is a kind of.
Dispersing agent can be in vapor phase method aluminium oxide, white carbon black, titanium dioxide, kaolin, talcum powder, mica powder at least one
Kind.
Antioxidant is the composite antioxidant of phenolic antioxidant and sulphur ester antioxidant composition, wherein the dosage of phenolic antioxidant
For the 55-70% of composite antioxidant total weight, the dosage of sulphur ester antioxidant is the 30-45% of composite antioxidant total weight；Its
In, phenolic antioxidant can preferred 2,6-di-tert-butyl p-cresol (antioxidant 264), 2,6- di-t-butyl -4- (diformazan ammonia first
Base) phenol (antioxidant 703), 1,3,5- trimethyl -2,4,6- three (4 '-hydroxyls -3 ', 5 '-di-t-butyl benzyls) benzene (antioxidant
330), bis- (3,5- di-tert-butyl-hydroxy phenyl propionic acid propionyl) hydrazines (antioxidant BPP), (the tertiary fourth of 3,5- bis- of 1,3,5- tri-
Base -4- hydroxybenzyl) isocyanuric acid (antioxidant 3114), (3,5- di-t-butyl -4- hydroxyl of 1,3,5- trimethyl -2,4,6- three
Benzyl) benzene (antioxidant 330), N, N'- is bis--(3- (3,5- di-tert-butyl-hydroxy phenyl) propiono) hexamethylene diamine (antioxidant
1098), 2,2' methylene bis (4- methyl-6-tert-butylphenol (antioxidant 2246), 2,2' methylene bis (4- ethyl -6- uncle
At least one of butylphenol) (antioxidant 425)；Preferred thio-2 acid two (octadecyl alcolol) ester (antioxygen of thioesters class oxidant
Agent DSTP), the double lauryl (anti-oxidant DLTP) of thio-2 acid, in (tetradecyl alchohol) ester of thio-2 acid two (antioxidant DMTP)
It is at least one.
Light stabilizer is hindered amine light stabilizer, may further preferably ethyl it is bis- (2,2,6,6- tetramethyl piperazinones)
(light stabilizer UV-3034), 4 benzoyloxy 2,2,6,6 tetramethyl piperidine (light stabilizer 744), 2- (the tertiary fourth of 3,5- bis-
Base -4- hydroxyl-benzene benzyl) -2- butyl -1,3- malonic acid two (1,2,2,6,6- pentamethyl -4- piperidyl) ester (light stabilizer
144), four (2,2,6,6- tetramethyl -4- piperidyl) -1,2,3,4- butane tetracarboxylic acid esters (light stabilizer LA-57), it is bis- (2,2,
6,6- tetramethyl -4- piperidyl) sebacate (light stabilizer 770), dimethyl succinate and 4- hydroxyl -2,2,6,6- tetramethyl
The polymer (light stabilizer BW-10LD) of base -1- piperidine ethanol, it is poly- [6- [(1,1,3,3- tetramethyl butyl) amino]] -1,3,
5- triazine -2,4- [(2,2,6,6,-tetramethyl-4-piperidyl) imino group] -1,6- oneself two support [(2,2,6,6- tetramethyl -4- piperidines
Base) imino group] (light stabilizer 944), 4- (tolysulfonyl amido) -2,2,6,6- tetramethyl piperidine (light stabilizer GW-
310), N- triacetic acid (2,2,6,6- tetramethyl -4- piperidyl) ester (light stabilizer GW-608), N- triacetic acid (1,2,2,6,6-
Pentamethyl -4- piperidyl) ester (light stabilizer GW-650), three (1,2,2,6,6- pentamethvl base)-phosphite esters (light stabilization
Agent GW-540), three (2,2,6,6- tetramethyl -4- oxygroup-piperidyl) -1,3,5- triazines (light stabilizer capital -1), N, N " -1,2-
Double -1,3- the propane diamine of ethane are reacted with the chloro- 1,3,5- triazine of 2,4,6- tri- and N- butyl -2,2,6,6- tetramethyl -4- piperidinamine
The polymer (light stabilizer HA-88) of product, it is poly- (4 (2,2,6,6- tetramethyl-piperidyl) imido grpups-hexa-methylene [4- (2,
2,6,6- tetramethyl-piperidyl) imido grpup]-ethylene (light stabilizer A-36), bis- (1- octyloxy -2,2,6,6- tetramethyl -4- piperazines
Piperidinyl) sebacate (light stabilizer -123), poly- methyl-propyl -3- oxo-[4- (2,2,6,6- tetramethyl) piperidyl] silicon oxygen
At least one of alkane (light stabilizer 299).
Nylon powder, coloring resin agent, dispersing agent, surface modifier, antioxidant and light stabilizer mass ratio can be with
For (50-80): (1-20): (0.05-2): (0.1-1.5): (0.5-2): any mass ratio in (0.1-1.5).
Comparative example 1
It takes nylon (same as Example 1) powder 3000g to add in machine mixer, then successively adds into machine mixer
Enter dispersing agent (same as Example 1) 15g, antioxidant (same as Example 1) 30g, light stabilizer (same as Example 1)
15g is uniformly mixed, after 120 meshes.Above-mentioned resulting primary colors nylon powder material, processing technology ginseng are processed in SLS equipment
Number are as follows: laser power 30W, scanning speed 20mm/h, be sintered spacing 0.5mm, 120 μm of sinter layer thickness, 158 DEG C of preheating temperature.
It after product is cooling completely, is put into prepared yellow dye solution, heats 20min, taken out dyed
Product is rinsed, and clean Yu Sehou dries.
Comparative example 2
Difference with comparative example 1 is: after product is cooling completely, selecting yellow colored paint, direct spraying coloring.Place 1
Hour is to film curing.
Comparative example 3
Difference with comparative example 1 is: after product is cooling completely, selecting yellow colored paint, first uses one layer of bottom of spray gun spraying
Paint, then spray one layer of colored paint.1 hour is placed to film curing.
SLS product colored in above-described embodiment 1 and comparative example 1-3 is subjected to 1 hour, 12 respectively in dehydrated alcohol
The immersion of hour, 24 hours, 48 hours, to observe the fastness of differential staining, as a result as shown in table 1 below.
Table 1:
Above-mentioned four groups colored SLS products are carried out to the comparison of color homogeneity using visual method, with Standard colour board and
Drawing technical requirements are standard, under standard sources irradiation, are about estimated at 120 °~140 ° away from tested surface 0.5m, observing it, whether there is or not bright
Significant difference is different.By above-mentioned four groups colored SLS products respectively according to ASTM D1729-1996 (2009) and GB/T 8424.3-
2001, the method in GB/T 3920:2008 evaluates its color difference and color fastness.As a result as shown in table 2 below.
Table 2:
| Color difference | Colour fastness to rubbing | Rub color fastness | Visual method | |
| Embodiment 1 | 5 grades | 5 grades | 5 grades | Uniformly |
| Comparative example 1 | 4 grades | 3 grades | 5 grades | It is more uniform |
| Comparative example 2 | 3 grades | 4 grades | 1 grade, pull-away | It is more uniform |
| Comparative example 3 | 3 grades | 4 grades | 1 grade, pull-away | It is more uniform |
It will be apparent from the above that the present invention has the advantage that
1, traditional method to the coloring of SLS product is to increase by one of postprocessing working procedures (in such as soaking and dyeing, spray painting
Color)；Relative to conventional method, colour SLS product is prepared using the material of embodiment 1, postprocessing working procedures can be removed from.
2, the partial size of added coloring resin agent is 0.01~1 μm in the above method, in laser selective sintering process
In, the nylon melt that coloring resin agent powder can be sintered area is wrapped up, and can be dispersed in nylon sintered body after cooling, is led to
Cross make light equably scatter and absorption and make product colour generation, will not be right therefore the phenomenon that the later period will not be generated and fade
The size of molded part impacts, while can guarantee SLS product color under the premise of guaranteeing that coloring agent particle is uniformly dispersed
Uniformity；And in traditional post-treatment method, spray painting colouring when paint film with the extension of use time and abrasion, it may occur that paint film
Alice and the unfavorable condition to fall off, the generally adhesive force of increase article surface and paint film can formerly spray one layer of primary coat, then into
One layer of table of row applies, and can largely effect on product dimensional accuracy in this way.
3, coloring resin agent selected in embodiment 1 is inorganic pigment, and high temperature resistance is at 300 degree or more, upper
The temperature of sintering zone in selective laser sintering process is stated far below 300 degree, is illustrated in process, above-mentioned coloring resin agent
Will not occur Chemical Physics variation, will not change colour or decompose, therefore, material before processing after there is no color difference.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those skilled in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, several equivalent substitute or obvious modifications can also be made, and performance or use is identical, all answered
When being considered as belonging to protection scope of the present invention.
Claims (5)
1. a kind of nylon powder material for selective laser sintering, which is characterized in that be grouped by each group of following parts by weight
At:
The nylon powder is made by solvent precipitation method, and the partial size of the nylon powder material is 10-150 μm, the resin
Toner selects inorganic pigment, and between 0.01~1 μm, the surface modifier is used for described the partial size of the coloring resin agent
Coloring resin agent carries out surface and is modified, and in selective laser sintering process, the coloring resin agent powder can be sintered area
Nylon melt is wrapped up, and can be dispersed in nylon sintered body after cooling；
The dispersing agent is at least one of vapor phase method aluminium oxide, white carbon black, titanium dioxide, kaolin, talcum powder, mica powder；
The surface modifier is fatty alcohol polyoxyethylene ether, alkyl phenol polyoxyethylene ether, γ-(methacryloxypropyl) propyl three
At least one of methoxy silane, gamma-aminopropyl-triethoxy-silane, γ-glycidyl ether oxygen propyl trimethoxy silicane,
It is modified that the surface modifier carries out surface to the coloring resin agent specifically: surface modifier is dissolved in organic solvent and is matched
The solution of mass concentration 2~3% is made, it is uniform to add coloring resin agent dispersion mixing, is ground in the ball mill after dry
Mill, sieving, obtains the coloring resin agent powder that surface was modified.
2. being used for the nylon powder material of selective laser sintering as described in claim 1, it is characterised in that: the nylon powder
End is selected from least one of PA6, PA66, PA1010, PA11 and PA12.
3. being used for the nylon powder material of selective laser sintering as described in claim 1, it is characterised in that: the antioxidant
For the composite antioxidant of phenolic antioxidant and sulphur ester antioxidant composition, the dosage of the phenolic antioxidant is that composite antioxidant is total
The 55-70% of weight, the dosage of sulphur ester antioxidant are the 30-45% of composite antioxidant total weight.
4. being used for the nylon powder material of selective laser sintering as described in claim 1, it is characterised in that: the light is stablized
Agent is hindered amine light stabilizer.
5. the preparation method described in claim 1-4 any one for the nylon powder material of selective laser sintering,
It is characterized in that, includes the following steps:
(1) surface modifier is dissolved in the solution for being configured to mass concentration 2~3% in organic solvent, adds coloring resin agent
Dispersion mixing is uniform, is ground in the ball mill after dry, is sieved, obtains the coloring resin agent powder that surface was modified；
(2) coloring resin agent powder, dispersing agent, antioxidant and the light for being modified surface obtained in nylon powder, step (1)
After mixing evenly, sieving obtains the nylon powder material to stabilizer.
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| CN106118037A (en) * | 2016-06-22 | 2016-11-16 | 陆志强 | A kind of high-strength corrosion-resisting PA/ABS/PBI plastic alloy 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 |
| FR3061182B1 (en) * | 2016-12-22 | 2019-05-31 | Setup Performance | SPHERIC PARTICLE POWDER OF CROSSLINKABLE POLYAMIDE, PROCESS FOR PREPARATION AND USE WITH SELECTIVE LASER SINTERING TECHNOLOGY |
| CN107236294B (en) * | 2017-05-19 | 2022-03-29 | 湖南华曙高科技股份有限公司 | Preparation method of polyamide 66 powder material for selective laser sintering |
| CN107033373A (en) * | 2017-06-01 | 2017-08-11 | 深圳市业天科技有限公司 | A kind of preparation method and applications of PA6 powder for selective laser sintering |
| US11413816B2 (en) | 2018-03-20 | 2022-08-16 | Hewlett-Packard Development Company, L.P. | Compositions for printing |
| CN109130187B (en) * | 2018-07-12 | 2020-11-10 | 湖南华曙高科技有限责任公司 | Preparation and forming method of color nylon powder material for selective laser sintering |
| FR3087198B1 (en) * | 2018-10-11 | 2021-11-19 | Arkema France | THERMOPLASTIC POLYMER POWDER FOR 3D PRINTING WITH IMPROVED RECYCLABILITY |
| US20220134648A1 (en) | 2019-07-15 | 2022-05-05 | Hewlett-Packard Development Company, L.P. | Three-dimensional printing |
| CN115304997A (en) * | 2022-08-22 | 2022-11-08 | 会通新材料(上海)有限公司 | Polyamide powder for metal surface coating and preparation method thereof |
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| CN101942193A (en) * | 2009-07-10 | 2011-01-12 | 合肥杰事杰新材料有限公司 | Whisker-enhanced nylon composite |
| CN103497508A (en) * | 2013-10-09 | 2014-01-08 | 深圳市沃尔核材股份有限公司 | Low-temperature-resistant illumination-resistant nylon binding tape |
| CN103525084A (en) * | 2013-10-14 | 2014-01-22 | 青岛颐世保塑料有限公司 | Polyamide PA6 reinforced toughened material |
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