CN107987344A - Selective laser sintering Quick-forming HDPE composite and preparation method - Google Patents
Selective laser sintering Quick-forming HDPE composite and preparation method Download PDFInfo
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- CN107987344A CN107987344A CN201711078131.1A CN201711078131A CN107987344A CN 107987344 A CN107987344 A CN 107987344A CN 201711078131 A CN201711078131 A CN 201711078131A CN 107987344 A CN107987344 A CN 107987344A
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- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 57
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 238000000110 selective laser sintering Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000011256 inorganic filler Substances 0.000 claims abstract description 27
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000006096 absorbing agent Substances 0.000 claims abstract description 16
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 229920002521 macromolecule Polymers 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000003607 modifier Substances 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 13
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 13
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 13
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical group [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 9
- 229960001545 hydrotalcite Drugs 0.000 claims description 9
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical group COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 claims description 7
- 238000010792 warming Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- ZXDDPOHVAMWLBH-UHFFFAOYSA-N 2,4-Dihydroxybenzophenone Chemical group OC1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 ZXDDPOHVAMWLBH-UHFFFAOYSA-N 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical group C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 5
- 239000012965 benzophenone Substances 0.000 claims description 5
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical compound CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 150000002989 phenols Chemical class 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 2
- 239000012964 benzotriazole Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical class OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 2
- SCWKRWCUMCMVPW-UHFFFAOYSA-N phenyl n-methylcarbamate Chemical compound CNC(=O)OC1=CC=CC=C1 SCWKRWCUMCMVPW-UHFFFAOYSA-N 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical class CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 230000000051 modifying effect Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000002114 nanocomposite Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- 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
- C08K9/02—Ingredients treated with inorganic substances
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/132—Phenols containing keto groups, e.g. benzophenones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of HDPE macromolecule composite powder materials for being based on selective laser sintering (Selective Laser Sintering, abbreviation SLS), its component includes：HDPE, surface modifier, inorganic filler, light absorber, antioxidant etc.；The present invention discloses the technology of preparing of HDPE polymer composites.The present invention is using technical process such as surface treatment, blending and modifyings, when the HDPE macromolecules composite powder material of preparation is used for SLS shapings, with convenient manufacturing process, sintering character is excellent, shaped article is while excellent mechanical property, high-precision and excellent molding effect is ensured, higher impact strength is provided, considerably improves SLS product comprehensive performances.
Description
Technical field
The present invention relates to one kind to be based on selective laser sintering HDPE macromolecule composite powder materials, and provides HDPE high
The technology of preparing of molecule composite powder material.
Background technology
HDPE dusty materials are selective laser sinterings (Selective Laser Sintering, abbreviation SLS) using most
For a kind of extensive high molecular material.It can be applied to the industries such as Aeronautics and Astronautics, machine-building, art work manufacture.Further to change
The performance of kind SLS products is, it is necessary to be modified HDPE material, to improve its intensity and molding effect.
Modification to HDPE, as other high molecular materials, often with inorganic filler for example calcium carbonate, kaolin, hydrotalcite,
SiO2Deng based on, it is modified using graft process.
In recent decades, the research of Preparing Organic-inorganic Nano Hybrid Material receives the concern of people.Wherein, it is related poly-
The research of compound/houghite nano composite material just occurred in recent years, and most of among these is all water soluble polymer systems, only
It is non-water soluble polymer systems to have minority.HDPE/ houghite nano composite materials physically with polymer/laminated silicon
Silicate nanometer composite material is similar, and when using polymer as matrix, the mechanical property of material is expected to obtain larger raising.Except this it
Outside, the introducing of inorganic filler, significantly improves the precision of product；The heat transfer of ground high molecular material is improved, significantly improves system
The shaping speed of product.
The content of the invention
It is an object of the invention to provide one kind to be used for selective laser sintering HDPE polymer composites, the material
While excellent mechanical property and molding effect is ensured, improve SLS product comprehensive performances.
Another object of the present invention is to provide the technology of preparing of above-mentioned HDPE polymer composites.
A kind of HDPE composite for selective laser sintering provided by the invention, is composed of the following components：
HDPE, surface modifier, inorganic filler, light absorber, antioxidant.
Each component is matched by following portions by weight：
HDPE 50-90
Inorganic filler 4-10
Surface modifier 5-30
Light absorber 0.5-7
Antioxidant 0.5-3
Above-mentioned PE is universal HDPE.
Above-mentioned inorganic filler is hydrotalcite, calcium carbonate, montmorillonite, is preferably hydrotalcite.
Above-mentioned surface modifier is ammonium polyphosphate (APP), in melamine (MEL), chlorosulfonation polypropylene, HDPE-g-MAH
One or more.
Above-mentioned light absorber is benzophenone, benzotriazole, hindered amines；Wherein benzophenone light absorber is excellent
Elect 2,4- dihydroxy benzophenones, 2- dihydroxy -4- methoxy benzophenones, one kind or several of 2- hydroxyl -4- octyloxy benzophenones as
Kind.
Above-mentioned antioxidant is Hinered phenols antioxidant, and Hinered phenols antioxidant is preferably p-hydroxyanisole, to benzene two
Phenol, 2,6-, bis- tertiary bases are to phenyl methylcarbamate, 1,3,5- trimethyls -2,4,6- tri- (3,5- di-tert-butyl-4-hydroxyl benzyl) benzene, 2,6- bis-
One or more in the tert-butyl group -4- methyl-phenols, 2,2 '-bis- (4- methyl-6-terts butyl-phenol) methane.
According to above-mentioned each group distribution ratio, the HDPE macromolecule composite powders for selective laser sintering are prepared according to the following steps
Powder material：
A. inorganic filler surface is modified：In mixing kettle, 70% industrial alcohol is added in inorganic filler, 60 DEG C is warming up to, stirs
Mix 2h；Certain amount of surface modifier is added, adds a small amount of water, pH=9 is adjusted with sodium hydroxide；At 60 DEG C, 6h is stirred, it is cold
But, 8h is stood.Filtering, is cleaned with 70% industrial alcohol.50 DEG C are dried under vacuum to constant weight, grinding be made to surface be modified it is inorganic
Filler.
B.HDPE is composite modified：HDPE, modified inorganic filler are mixed by a certain percentage, through twin-screw extrusion, are granulated；Again through modeling
Expect flour mill milling, by 120 mesh sieves, the high-molecular compounded and modified materials of HDPE are made.
C. it is blended：The high-molecular compounded and modified materials of the HDPE of preparation are added in mixing agitator, then add light absorber, antioxygen
Agent, stirs evenly, and the HDPE macromolecule composite powder materials based on selective laser sintering are made.
Obtained HDPE macromolecules composite powder material is shaped for SLS formers AMA600, gained is into shape
Part is tested for the property by ASTM standard.
Specific implementation method
Embodiment 1
A. in mixing kettle, add 70% industrial alcohol 15Kg, hydrotalcite 1500g, be warming up to 60 DEG C, stir 2h；Add
Ammonium polyphosphate (APP) 1500g, adds a small amount of water, and pH=9 is adjusted with sodium hydroxide；60 DEG C are again heated to, stirs 6h, is cooled down, is stood
8h.Filtering, is cleaned with 70% industrial alcohol.50 DEG C are dried under vacuum to constant weight, and the inorganic filler being modified to surface is made in grinding.
B.HDPE is composite modified：HDPE13200g, surface-modified inorganic filler 1500g, are mixed.Through twin-screw extrusion, make
Grain；It is milled again through plastic grinder, by 120 mesh sieves, the high-molecular compounded and modified materials of HDPE is made.
C. it is blended：The high-molecular compounded and modified materials of the HDPE of preparation are added in mixing agitator, then add light absorber
2,4- dihydroxy benzophenone 75g, antioxidant p-hydroxyanisole 75g, stir evenly, and are made described and are burnt based on selective laser
The HDPE macromolecule composite powder materials of knot.
Above-mentioned gained HDPE polymer material and engineerings are shaped on SLS formers AMA600, preparation technology parameter is：Swash
Luminous power 50W, sweep speed 2000mm/s, sinter spacing 0.1mm, sinter layer thickness 0.1mm, 165 DEG C of preheating temperature；By gained
SLS drip moldings are tested for the property by ASTM standard.Tensile strength 55.2MPa, bending strength 49.2MPa, impact strength
8760J/m2.
Embodiment 2
A. in mixing kettle, add 70% industrial alcohol 13Kg, hydrotalcite 1300g, be warming up to 60 DEG C, stir 2h；Add
Ammonium polyphosphate (APP) 1300g, adds a small amount of water, and pH=9 is adjusted with sodium hydroxide；60 DEG C are again heated to, stirs 6h, is cooled down, is stood
8h.Filtering, is cleaned with 70% industrial alcohol.50 DEG C are dried under vacuum to constant weight, and the inorganic filler being modified to surface is made in grinding.
B.HDPE is composite modified：HDPE11310g, surface-modified inorganic filler 1300g, are mixed.Through twin-screw extrusion, make
Grain；It is milled again through plastic grinder, by 120 mesh sieves, the high-molecular compounded and modified materials of HDPE is made.
C. it is blended：The PE composite modification materials of preparation are added in mixing agitator, then add light absorber 2,4- dihydroxies
Base benzophenone 65g, antioxidant p-hydroxyanisole 65g, stir evenly, and the HDPE based on selective laser sintering is made
Macromolecule composite powder material.
Above-mentioned gained HDPE polymer material and engineerings are shaped on SLS formers AMA600, preparation technology parameter is：Swash
Luminous power 50W, sweep speed 2000mm/s, sinter spacing 0.1mm, sinter layer thickness 0.1mm, 165 DEG C of preheating temperature；By gained
SLS drip moldings are tested for the property by ASTM standard.Tensile strength 58.8MPa, bending strength 50.8
MPa, impact strength 9080J/m2。
Embodiment 3
A. in mixing kettle, add 70% industrial alcohol 14Kg, hydrotalcite 700g, be warming up to 60 DEG C, stir 2h；Add poly-
Ammonium phosphate (APP) 1000g, adds a small amount of water, and pH=9 is adjusted with sodium hydroxide；60 DEG C are again heated to, stirs 6h, is cooled down, is stood
8h.Filtering, is cleaned with 70% industrial alcohol.50 DEG C are dried under vacuum to constant weight, and the inorganic filler being modified to surface is made in grinding.
B.HDPE is composite modified：HDPE12320g, surface-modified inorganic filler 1400g, are mixed.Through twin-screw extrusion, make
Grain；It is milled again through plastic grinder, by 120 mesh sieves, HDPE composite modification materials is made.
C. it is blended：The HDPE composite modification materials of preparation are added in mixing agitator, then add light absorber 2,4- bis-
Hydroxy benzophenone 70g, antioxidant p-hydroxyanisole 70g, stir evenly, and are made described based on selective laser sintering
HDPE macromolecule composite powder materials.
Above-mentioned gained HDPE dusty materials are shaped on SLS formers AMA600, preparation technology parameter is：Laser power
50W, sweep speed 2000mm/s, sinter spacing 0.1mm, sinter layer thickness 0.1mm, 165 DEG C of preheating temperature；By gained SLS into
Shape part is tested for the property by ASTM standard.Tensile strength 10MPa, bending strength 50.1MPa, impact strength 9000J/m2。
Embodiment 4
A. in mixing kettle, add 70% industrial alcohol 13Kg, hydrotalcite 1300g, be warming up to 60 DEG C, stir 2h；Add
Ammonium polyphosphate (APP) 1300g, adds a small amount of water, and pH=9 is adjusted with sodium hydroxide；60 DEG C are again heated to, stirs 6h, is cooled down, is stood
8h.Filtering, is cleaned with 70% industrial alcohol.50 DEG C are dried under vacuum to constant weight, and the inorganic filler being modified to surface is made in grinding.
B.HDPE is composite modified：HDPE10140g, surface-modified inorganic filler 2600g, are mixed.Through twin-screw extrusion, make
Grain；It is milled again through plastic grinder, by 120 mesh sieves, HDPE composite modification materials is made.
C. it is blended：The HDPE composite modification materials of preparation are added in mixing agitator, then add light absorber 2,4- bis-
Hydroxy benzophenone 65g, antioxidant p-hydroxyanisole 65g, stir evenly, and are made described based on selective laser sintering
HDPE macromolecule composite powder materials.
Above-mentioned gained HDPE dusty materials are shaped on SLS formers AMA600, preparation technology parameter is：Laser power
50W, sweep speed 2000mm/s, sinter spacing 0.1mm, sinter layer thickness 0.1mm, 165 DEG C of preheating temperature；By gained SLS into
Shape part is tested for the property by ASTM standard.Tensile strength 60MPa, bending strength 51MPa, impact strength 9400J/m2.
Embodiment 5
A. in mixing kettle, add 70% industrial alcohol 12Kg, hydrotalcite 1800g, be warming up to 60 DEG C, stir 2h；Add
Ammonium polyphosphate (APP) 1800g, adds a small amount of water, and pH=9 is adjusted with sodium hydroxide；60 DEG C are again heated to, stirs 6h, is cooled down, is stood
8h.Filtering, is cleaned with 70% industrial alcohol.50 DEG C are dried under vacuum to constant weight, and the inorganic filler being modified to surface is made in grinding.
B.HDPE is composite modified：HDPE8160g, surface-modified inorganic filler 3600g, are mixed.Through twin-screw extrusion, make
Grain；It is milled again through plastic grinder, by 120 mesh sieves, the high-molecular compounded and modified materials of HDPE is made.
C. it is blended：The HDPE composite modification materials of preparation are added in mixing agitator, then add light absorber 2,4- bis-
Hydroxy benzophenone 60g, antioxidant p-hydroxyanisole 60g, stir evenly, and are made described based on selective laser sintering
HDPE macromolecule composite powder materials.
Above-mentioned gained HDPE dusty materials are shaped on SLS formers AMA600, preparation technology parameter is：Laser power
50W, sweep speed 2000mm/s, sinter spacing 0.1mm, sinter layer thickness 0.1mm, 165 DEG C of preheating temperature；By gained SLS into
Shape part is tested for the property by ASTM standard.Tensile strength 47.5MPa, bending strength 40MPa, impact strength 7500J/m2。
Claims (8)
1. the HDPE macromolecule composite powder materials based on selective laser sintering, it is characterised in that the macromolecule composite powder
Powder material is composed of the following components：HDPE, surface modifier, inorganic filler, light absorber, antioxidant.
2. according to claim 1, it is characterized in that each component is matched by following portions by weight：
HDPE 50-90
Inorganic filler 4-10
Surface modifier 5-30
Light absorber 0.5-7
Antioxidant 0.5-3.
3. it is according to claim 1 or claim 2, it is characterized in that the HDPE is universal.
4. according to claim 1 or claim 2, it is characterized in that the inorganic filler is hydrotalcite, calcium carbonate, kaolin, cover it is de-
Soil.
5. it is according to claim 1 or claim 2, it is characterized in that the surface modifier is ammonium polyphosphate (APP), melamine
(MEL), the one or more in chlorosulfonation polypropylene, HDPE-g-MAH.
6. it is according to claim 1 or claim 2, it is characterized in that the light absorber is benzophenone, benzotriazole, is obstructed
Amine；Wherein benzophenone light absorber is preferably 2,4- dihydroxy benzophenones, 2- dihydroxy -4- methoxy benzophenones, 2-
Hydroxyl -4- octyloxy benzophenones.
7. it is according to claim 1 or claim 2, it is characterized in that the antioxidant is Hinered phenols antioxidant；Hinered phenols resist
Oxygen agent is preferably p-hydroxyanisole, hydroquinone, 2,6-, bis- tertiary bases to phenyl methylcarbamate, 1,3,5- trimethyls -2,4,6- tri- (3,5-
Di-tert-butyl-4-hydroxyl benzyl) benzene, 2,6- di-t-butyl -4- methyl-phenols, 2,2 '-bis- (4- methyl-6-terts butyl-phenol)
One or more in methane.
8. the HDPE macromolecule composite powder materials based on selective laser sintering described in claim 1 are to make according to the following steps
：
A. inorganic filler surface is modified：In mixing kettle, 70% industrial alcohol is added in inorganic filler, 60 DEG C is warming up to, stirs
Mix 2h；Certain amount of surface modifier is added, adds a small amount of water, pH=9 is adjusted with sodium hydroxide；
At 60 DEG C, 6h is stirred, cooling, stands 8h；
Filtering, is cleaned with 70% industrial alcohol；
50 DEG C are dried under vacuum to constant weight, and the inorganic filler being modified to surface is made in grinding；
B.PE is composite modified：PE, modified inorganic filler are mixed by a certain percentage, through twin-screw extrusion, are granulated；
It is milled again through plastic grinder, by 120 mesh sieves, the high-molecular compounded and modified materials of HDPE is made；
C. it is blended：The high-molecular compounded and modified materials of the HDPE of preparation are added in mixing agitator, then add light absorber, antioxygen
Agent, stirs evenly, and the HDPE macromolecule composite powder materials based on selective laser sintering are made.
Priority Applications (1)
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| CN110481014A (en) * | 2019-08-26 | 2019-11-22 | 华南理工大学 | A kind of high density polyethylene (HDPE) Complex Different Shape pipe fitting selective laser sintering forming method |
| WO2020049020A3 (en) * | 2018-09-04 | 2020-05-14 | Karl Leibinger Medizintechnik Gmbh & Co. Kg | Laser-sintered filter, method for producing the filter, and method for ensuring fluid flow |
| CN111234430A (en) * | 2019-12-17 | 2020-06-05 | 四川大学 | Polyvinyl alcohol-based composite powder for selective laser sintering and preparation method thereof |
| CN111249530A (en) * | 2018-11-14 | 2020-06-09 | 中南大学 | Montmorillonite/polyglycolic acid composite bone scaffold and preparation method thereof |
| CN112368339A (en) * | 2018-08-10 | 2021-02-12 | 株式会社Adeka | Additive composition, flame-retardant synthetic resin composition containing same, and molded article thereof |
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| CN112368339A (en) * | 2018-08-10 | 2021-02-12 | 株式会社Adeka | Additive composition, flame-retardant synthetic resin composition containing same, and molded article thereof |
| EP3835367A4 (en) * | 2018-08-10 | 2022-06-01 | Adeka Corporation | Additive composition, flame-retardant synthetic resin composition containing same, and molded article thereof |
| WO2020049020A3 (en) * | 2018-09-04 | 2020-05-14 | Karl Leibinger Medizintechnik Gmbh & Co. Kg | Laser-sintered filter, method for producing the filter, and method for ensuring fluid flow |
| CN112638496A (en) * | 2018-09-04 | 2021-04-09 | 卡尔·莱宾格医疗技术有限责任两合公司 | Laser sintered filter, method of manufacturing filter, and liquid transport method |
| CN111249530A (en) * | 2018-11-14 | 2020-06-09 | 中南大学 | Montmorillonite/polyglycolic acid composite bone scaffold and preparation method thereof |
| CN110481014A (en) * | 2019-08-26 | 2019-11-22 | 华南理工大学 | A kind of high density polyethylene (HDPE) Complex Different Shape pipe fitting selective laser sintering forming method |
| CN111234430A (en) * | 2019-12-17 | 2020-06-05 | 四川大学 | Polyvinyl alcohol-based composite powder for selective laser sintering and preparation method thereof |
| CN111234430B (en) * | 2019-12-17 | 2021-04-02 | 四川大学 | Polyvinyl alcohol-based composite powder for selective laser sintering and preparation method thereof |
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