CN110144101A - A kind of 3D printing consumptive material poly-lactic acid material and preparation method thereof - Google Patents
A kind of 3D printing consumptive material poly-lactic acid material and preparation method thereof Download PDFInfo
- Publication number
- CN110144101A CN110144101A CN201811393663.9A CN201811393663A CN110144101A CN 110144101 A CN110144101 A CN 110144101A CN 201811393663 A CN201811393663 A CN 201811393663A CN 110144101 A CN110144101 A CN 110144101A
- Authority
- CN
- China
- Prior art keywords
- parts
- acid
- agent
- powder
- lactic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
Abstract
The present invention relates to a kind of 3D printing consumptive material poly-lactic acid materials, be grouped as by the group of following mass parts: 200-220 parts of polylactic acid, 30-50 parts of polydactyl acid, 200-220 parts of metal powder, 16-20 parts of metallic pigments, 30-32 parts of toughener, 5-8 parts of coupling agent, 4-6 parts of lubricant, 1-2 parts of antioxidant, 1-2 parts of melt adhesive, polydactyl acid are made of 50-70 parts of polylactic acid, 30-50 parts of toughener, 0.5-2 parts of coupling agent, 0.1-2 parts of crystallization nucleating agent, 0.1-2 parts of anti-hydrolysis agent.Preparation method, including step 1: drying, cooling after coupling agent solution are sprayed into while metal powder and metallic pigments are mixed；Step 2: after polylactic acid, toughener, coupling agent, anti-hydrolysis agent, crystallization nucleating agent are added to the mixer mixing by mixing, blended, tie rod, air-cooled, pelletizing obtain polylactic acid modified master batch；It is prepared into silk Step 3: metal powder and metallic pigments, polylactic acid, polydactyl acid, antioxidant, lubricant, melt adhesive are added to the mixer blending extrusion by formula and winds.
Description
Technical field
The present invention relates to 3D printing field of material technology, more particularly to a kind of 3D printing consumptive material poly-lactic acid material and
Preparation method.
Background technique
3D printing technique is just changing the process of modern manufacturing industry deeply, it be one kind do not need conventional tool, fixture and
Lathe, but based on digital model file, with adhesive materials such as powdery metal or plastics, pass through what is successively printed
Mode constructs the technology of object, and the technology is in jewelry, footwear, industrial design, building, engineering and construction (AEC), automobile, boat
Empty space flight, dentistry and medical industries, education, GIS-Geographic Information System, civil engineering, gun and other field are all applied.
Due to the good thermal fluidity of polymer material, it is quickly cooled down caking property, higher mechanical strength, in 3D printing system
It makes field quickly to be applied and developed, especially polylactic acid is as a kind of environmentally protective, biodegradable new material, tool
There are the especially excellent printing effects such as interlayer adhesion is high, be not easy buckling deformation, printout surface is smooth, therefore polylactic acid
It is widely used in 3D printing material, the deep favor by 3D printing insider.But common polylactic acid consumptive material compared with
Crisp, poor toughness, single effect can make polylactic acid consumptive material more crisp, Er Qiehui if a large amount of addition metal powders or metallic pigments are added
Make printout be difficult to merge between layers, is easy to crack, it is difficult to realize final effect or purposes.
Summary of the invention
Based on this, it is necessary to for for solve existing polylactic acid consumptive material is more crisp, metal powder or metallic pigments are added after occur
Excessive embrittlement, be easy to crack, problem of easy degradation, a kind of 3D printing consumptive material poly-lactic acid material is provided.Of the invention is another
A purpose is to provide a kind of preparation method of 3D printing consumptive material poly-lactic acid material.
A kind of 3D printing consumptive material poly-lactic acid material, is grouped as by the group of following mass parts: 200-220 parts of polylactic acid changes
Property 30-50 parts of polylactic acid, 200-220 parts of metal powder, 16-20 parts of metallic pigments, 30-32 parts of toughener, 5-8 parts of coupling agent, profit
4-6 parts of lubrication prescription, 1-2 parts of antioxidant, 1-2 parts of melt adhesive,
Wherein, the polydactyl acid by 50-70 parts of polylactic acid, 30-50 parts of toughener, 0.5-2 parts of coupling agent, crystallize into
0.1-2 parts of core agent, 0.1-2 parts of anti-hydrolysis agent compositions.
The anti-hydrolysis agent is anti-hydrolysis agent HyMax 1010, anti-hydrolysis agent AS1, water resistant in one of the embodiments,
Solve agent AS4, anti-hydrolysis agent AS15, anti-hydrolysis agent P200, anti-hydrolysis agent Bio-SAHTM362, one in anti-hydrolysis agent TMP-2000
Kind.
The coupling agent is the one or two of silane coupling agent, titanate coupling agent in one of the embodiments,.
The crystallization nucleating agent is amides compound in one of the embodiments, and the amides compound is second
Support double stearic amides, N, one of N'- dicyclohexyl terephthalamide, trimesic acid triamide or more than one
Mixture, the anti-hydrolysis agent are two (2,6- diisopropyl phenyl) carbodiimides, two [4- (1- methyl-1-phenylethyl)-
2,6- diisopropyl phenyl] carbodiimides, one of two (4- tert-butyl -2,6- diisopropyl phenyl) carbodiimides or
More than one mixture.
The melt bonding regulator is terpene resin or rosin resin in one of the embodiments,.
The toughener is that ABS high glue powder, s-B-S block are total in one of the embodiments,
One of polymers, hydrogenated styrene-butadiene-styrene block copolymers or more than one mixture.
The antioxidant is 1,1,3- tri- (- 5 tert-butyl-phenyl of 2- methyl -4- hydroxyl) in one of the embodiments,
Butane, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, β-(3,5- di-t-butyl -4- hydroxy benzenes
Base) propionic acid octadecyl alcolol rouge, 2,2 '-methylene bis (4- methyl-6-tert-butylphenol), β-(3,5- di-tert-butyl-hydroxy phenyl)
One of propionic acid octadecyl alcolol rouge, 2,6-di-tert-butyl p-cresol or more than one mixture.
In one of the embodiments, the metal powder be the graininess stainless steel powder of 100-300 mesh, copper powder, bronze powder,
At least one of brass powder, aluminium powder, the metallic pigments are flakey aluminium silver powder, copper powder, the bronze powder, copper of 100-300 mesh
At least one of bronze.
The lubricant is paraffin, polyethylene wax, ethylene bis stearic acid amide, ethylene-in one of the embodiments,
Acrylic copolymer, stearic acid, two or more of mixtures in zinc stearate.
The preparation method of above-mentioned 3D printing consumptive material poly-lactic acid material, comprising the following steps:
Step 1: coupling agent solution is sprayed into while metal powder and metallic pigments are mixed, then soaks resulting surface
Profit has metal powder and the metallic pigments drying of coupling agent, is cooled to room temperature；
Polylactic acid, toughener, coupling agent, anti-hydrolysis agent, crystallization nucleating agent: being added to the mixer by step 2 by formula,
Mixing machine revolving speed mixes 5-8min under conditions of being 50-1600r/min, obtains mixed material；Double spiral shells are added in the mixed material
Blending extrusion in bar extruder, extrusion temperature be 170-210 DEG C, screw speed 60-100r/min, blended, tie rod, it is air-cooled,
Pelletizing obtains polylactic acid modified master batch, as polydactyl acid；
Step 3: according to being formulated the resulting metal powder of step 1 and the resulting modification of metallic pigments, polylactic acid, step 2
Polylactic acid, antioxidant, lubricant, melt adhesive are added to the mixer, in the condition of mixing machine revolving speed 50-1600r/min
Lower blending 5-10min, obtains mixed material；And the mixed material is prepared into through 3D printing consumptive material single screw extrusion equipment extrusion
Silk is simultaneously wound, and extrusion temperature control is 160-220 DEG C.
Preparation method of the invention sprays into coupling agent solution while first mixing metal powder and metallic pigments, dries, then
By the way of the addition of polydactyl acid master batch, it is equal to improve the dispersion of metal powder and metallic pigments component in polylactic acid consumptive material
Evenness；Solve existing poly-lactic acid material is more crisp, the excessive embrittlement occurred after metal powder or metallic pigments is added, is easy to crack,
Degradable technical problem, 3D printing consumptive material poly-lactic acid material obtained and printed product have good metal effect, tough
Property is good, not degradable, with excellent printing effect when applied to 3D printing.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below to specific reality of the invention
The mode of applying is described in detail.In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But
The invention can be embodied in many other ways as described herein, and those skilled in the art can be without prejudice to this hair
Similar improvement is done in the case where bright intension, therefore the present invention is not limited by the specific embodiments disclosed below.
A kind of 3D printing consumptive material poly-lactic acid material, is grouped as by the group of following mass parts: 200-220 parts of polylactic acid changes
Property 30-50 parts of polylactic acid, 200-220 parts of metal powder, 16-20 parts of metallic pigments, 30-32 parts of toughener, 5-8 parts of coupling agent, profit
4-6 parts of lubrication prescription, 1-2 parts of antioxidant, 1-2 parts of melt adhesive,
Wherein, polydactyl acid is by 50-70 parts of polylactic acid, 30-50 parts of toughener, 0.5-2 parts of coupling agent, crystallization nucleating agent
0.1-2 parts, 0.1-2 parts of anti-hydrolysis agent compositions.
Anti-hydrolysis agent is anti-hydrolysis agent HyMax 1010, anti-hydrolysis agent AS1, anti-hydrolysis agent in one of the embodiments,
One of AS4, anti-hydrolysis agent AS15, anti-hydrolysis agent P200, anti-hydrolysis agent Bio-SAHTM362, anti-hydrolysis agent TMP-2000.
Coupling agent is the one or two of silane coupling agent, titanate coupling agent in one of the embodiments,.
Crystallization nucleating agent is amides compound in one of the embodiments, and amides compound is that ethylene is double stearic
Sour amide, N, one of N'- dicyclohexyl terephthalamide, trimesic acid triamide or more than one mixture,
Anti-hydrolysis agent is two (2,6- diisopropyl phenyl) carbodiimides, two [4- (1- methyl-1-phenylethyl)-2,6- diisopropyls
Base phenyl] carbodiimides, one of two (4- tert-butyl -2,6- diisopropyl phenyl) carbodiimides or more than one
Mixture.
Melt bonding regulator is terpene resin or rosin resin in one of the embodiments,.
Toughener in one of the embodiments, is ABS high glue powder, s-B-S block copolymerization
One of object, hydrogenated styrene-butadiene-styrene block copolymers or more than one mixture.
In one of the embodiments, antioxidant be 1,1,3- tri- (- 5 tert-butyl-phenyl of 2- methyl -4- hydroxyl) butane,
Four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid
Octadecyl alcolol rouge, 2,2 '-methylene bis (4- methyl-6-tert-butylphenol), β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid 18
One of alcohol ester, 2,6-di-tert-butyl p-cresol or more than one mixture.
Metal powder is graininess stainless steel powder, copper powder, bronze powder, the brass of 100-300 mesh in one of the embodiments,
At least one of powder, aluminium powder, metallic pigments is in the flakey aluminium silver powder of 100-300 mesh, copper powder, bronze powder, Cu-Zn alloy powders
It is at least one.
Lubricant in one of the embodiments, is paraffin, polyethylene wax, ethylene bis stearic acid amide, ethylene-propylene
Acid copolymer, stearic acid, two or more of mixtures in zinc stearate.
The preparation method of above-mentioned 3D printing consumptive material poly-lactic acid material, comprising the following steps:
Step 1: coupling agent solution is sprayed into while metal powder and metallic pigments are mixed, then soaks resulting surface
Profit has metal powder and the metallic pigments drying of coupling agent, is cooled to room temperature；
Polylactic acid, toughener, coupling agent, anti-hydrolysis agent, crystallization nucleating agent: being added to the mixer by step 2 by formula,
Mixing machine revolving speed mixes 5-8min under conditions of being 50-1600r/min, obtains mixed material；Double spiral shells are added in the mixed material
Blending extrusion in bar extruder, extrusion temperature be 170-210 DEG C, screw speed 60-100r/min, blended, tie rod, it is air-cooled,
Pelletizing obtains polylactic acid modified master batch, as polydactyl acid；
Step 3: according to being formulated the resulting metal powder of step 1 and the resulting modification of metallic pigments, polylactic acid, step 2
Polylactic acid, antioxidant, lubricant, melt adhesive are added to the mixer, in the condition of mixing machine revolving speed 50-1600r/min
Lower blending 5-10min, obtains mixed material；And the mixed material is prepared into through 3D printing consumptive material single screw extrusion equipment extrusion
Silk is simultaneously wound, and extrusion temperature control is 160-220 DEG C.
Preparation method of the invention sprays into coupling agent solution while first mixing metal powder and metallic pigments, dries, then
By the way of the addition of polydactyl acid master batch, it is equal to improve the dispersion of metal powder and metallic pigments component in polylactic acid consumptive material
Evenness；Solve existing poly-lactic acid material is more crisp, the excessive embrittlement occurred after metal powder or metallic pigments is added, is easy to crack,
Degradable technical problem, 3D printing consumptive material poly-lactic acid material obtained and printed product have good metal effect, tough
Property is good, not degradable, with excellent printing effect when applied to 3D printing.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of 3D printing consumptive material poly-lactic acid material, which is characterized in that be grouped as by the group of following mass parts: polylactic acid 200-
220 parts, 30-50 parts of polydactyl acid, 200-220 parts of metal powder, 16-20 parts of metallic pigments, 30-32 parts of toughener, coupling agent
5-8 parts, 4-6 parts of lubricant, 1-2 parts of antioxidant, 1-2 parts of melt adhesive,
Wherein, the polydactyl acid is by 50-70 parts of polylactic acid, 30-50 parts of toughener, 0.5-2 parts of coupling agent, crystallization nucleating agent
0.1-2 parts, 0.1-2 parts of anti-hydrolysis agent compositions.
2. 3D printing consumptive material poly-lactic acid material according to claim 1, which is characterized in that the anti-hydrolysis agent is water resistant
Solve agent HyMax 1010, anti-hydrolysis agent AS1, anti-hydrolysis agent AS4, anti-hydrolysis agent AS15, anti-hydrolysis agent P200, anti-hydrolysis agent Bio-
One of SAHTM362, anti-hydrolysis agent TMP-2000.
3. 3D printing consumptive material poly-lactic acid material according to claim 1, which is characterized in that the coupling agent is that silane is even
Join the one or two of agent, titanate coupling agent.
4. 3D printing consumptive material poly-lactic acid material according to claim 1, it is characterised in that: the crystallization nucleating agent is acyl
Aminated compounds, the amides compound are ethylene bis stearic acid amide, N, N'- dicyclohexyl terephthalamide, equal benzene
One of tricarboxylic acid triamide or more than one mixture, the anti-hydrolysis agent are two (2,6- diisopropyl phenyls) carbonization
Diimine, two [4- (1- methyl-1-phenylethyl)-2,6- diisopropyl phenyl] carbodiimides, two (4- tert-butyl-2,6-
Diisopropyl phenyl) one of carbodiimides or more than one mixture.
5. 3D printing consumptive material poly-lactic acid material according to claim 1, which is characterized in that the melt bonds regulator
For terpene resin or rosin resin.
6. 3D printing consumptive material poly-lactic acid material according to claim 1, which is characterized in that the toughener is ABS
High glue powder, Styrene-Butadiene-Styrene Block Copolymer, in hydrogenated styrene-butadiene-styrene block copolymers
One or more kinds of mixtures.
7. 3D printing consumptive material poly-lactic acid material according to claim 1, which is characterized in that described: the antioxidant
It is 1,1,3- tri- (- 5 tert-butyl-phenyl of 2- methyl -4- hydroxyl) butane, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid]
Pentaerythritol ester, β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid octadecyl alcolol rouge, 2,2 '-methylene bis (4- methyl-6-tert-butyl
Base phenol), β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid octadecyl alcolol rouge, one of 2,6-di-tert-butyl p-cresol or
More than one mixture.
8. 3D printing consumptive material poly-lactic acid material according to claim 1, which is characterized in that the metal powder is 100-
At least one of the graininess stainless steel powders of 300 mesh, copper powder, bronze powder, brass powder, aluminium powder, the metallic pigments are 100-
At least one of the flakey aluminium silver powder of 300 mesh, copper powder, bronze powder, Cu-Zn alloy powder.
9. 3D printing consumptive material poly-lactic acid material according to claim 1, which is characterized in that the lubricant is stone
Wax, polyethylene wax, ethylene bis stearic acid amide, ethylene-acrylic acid copolymer, stearic acid, two or more in zinc stearate
Mixture.
10. a kind of preparation method of 3D printing consumptive material poly-lactic acid material, which comprises the following steps:
Step 1: coupling agent solution is sprayed into while metal powder and metallic pigments are mixed, is then impregnated with resulting surface
The metal powder and metallic pigments of coupling agent are dried, and are cooled to room temperature；
Step 2: polylactic acid, toughener, coupling agent, anti-hydrolysis agent, crystallization nucleating agent are added to the mixer by formula, mixed
Machine revolving speed mixes 5-8min under conditions of being 50-1600r/min, obtains mixed material；Mixed material addition twin-screw is squeezed
Blending extrusion in machine out, extrusion temperature are 170-210 DEG C, screw speed 60-100r/min, blended, tie rod, air-cooled, pelletizing
Obtain polylactic acid modified master batch, as polydactyl acid；
Step 3: according to formula that the resulting metal powder of step 1 and the resulting modification of metallic pigments, polylactic acid, step 2 is poly- newborn
Acid, antioxidant, lubricant, melt adhesive are added to the mixer, under conditions of mixing machine revolving speed 50-1600r/min altogether
Mixed 5-10min, obtains mixed material；And the mixed material is prepared into silk simultaneously through 3D printing consumptive material single screw extrusion equipment extrusion
Winding, extrusion temperature control are 160-220 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393663.9A CN110144101A (en) | 2018-11-21 | 2018-11-21 | A kind of 3D printing consumptive material poly-lactic acid material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393663.9A CN110144101A (en) | 2018-11-21 | 2018-11-21 | A kind of 3D printing consumptive material poly-lactic acid material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110144101A true CN110144101A (en) | 2019-08-20 |
Family
ID=67588423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811393663.9A Withdrawn CN110144101A (en) | 2018-11-21 | 2018-11-21 | A kind of 3D printing consumptive material poly-lactic acid material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110144101A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906940A (en) * | 2016-05-27 | 2016-08-31 | 中山大学惠州研究院 | Marble or wood 3D printing plastic and preparation method thereof |
| CN107674392A (en) * | 2017-09-22 | 2018-02-09 | 浙江闪铸三维科技有限公司 | A kind of plasticizing polylactic acid 3D printing material and preparation method thereof |
| CN108164945A (en) * | 2017-12-28 | 2018-06-15 | 诺思贝瑞新材料科技（苏州）有限公司 | A kind of preparation method of the 3D printing modified polylactic acid material with metal effect |
| CN108410147A (en) * | 2018-03-26 | 2018-08-17 | 华南协同创新研究院 | A kind of 3D printing wire rod and preparation method using the preparation of polylactic acid reclaimed materials |
-
2018
- 2018-11-21 CN CN201811393663.9A patent/CN110144101A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906940A (en) * | 2016-05-27 | 2016-08-31 | 中山大学惠州研究院 | Marble or wood 3D printing plastic and preparation method thereof |
| CN107674392A (en) * | 2017-09-22 | 2018-02-09 | 浙江闪铸三维科技有限公司 | A kind of plasticizing polylactic acid 3D printing material and preparation method thereof |
| CN108164945A (en) * | 2017-12-28 | 2018-06-15 | 诺思贝瑞新材料科技（苏州）有限公司 | A kind of preparation method of the 3D printing modified polylactic acid material with metal effect |
| CN108410147A (en) * | 2018-03-26 | 2018-08-17 | 华南协同创新研究院 | A kind of 3D printing wire rod and preparation method using the preparation of polylactic acid reclaimed materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11135830B2 (en) | Sinterable feedstock for use in 3D printing devices | |
| CN104292654B (en) | Impact-resistant high-melt-index high-rigidity polypropylene composite material | |
| CN101173074A (en) | Polypropelene composition with scratch resistant capability and processes for producing same | |
| CN109575584B (en) | Nylon wire for 3D printing and preparation method thereof | |
| CN109503942A (en) | Talcum powder master batch and preparation method thereof | |
| CN102532635A (en) | Ultra-smooth shielding material | |
| CN101851404A (en) | Preparation method of polyester composition with high surface gloss | |
| CN104845403A (en) | High-strength anti-wear high polymer material and preparation method thereof | |
| CN110144101A (en) | A kind of 3D printing consumptive material poly-lactic acid material and preparation method thereof | |
| CN105647174A (en) | Wear-resistant and high-temperature resistant nylon composite material and preparation method therefor | |
| CN110684348B (en) | Polyamide material with metal texture and preparation method thereof | |
| CN111499965B (en) | Self-repairing scratch-resistant polypropylene nano material for automobile clothes and preparation method thereof | |
| CN104046017A (en) | Wear-resistant and high-temperature-resistant nylon composite material and preparation method thereof | |
| CN110845935A (en) | Small motor insulation powder and preparation method thereof | |
| CN103992630A (en) | Polyphenylether resin alloy material for automobile wheel hub housings and preparation method thereof | |
| CN101429307A (en) | Special-purpose material for inner decoration member of automotive vehicle and manufacturing method thereof | |
| CN113512292A (en) | Lubricating composition, low-smoke halogen-free material and preparation method thereof | |
| CN111621078A (en) | Super-tough environmental stress cracking resistant high-density polyethylene and preparation method thereof | |
| CN114350071A (en) | High-uniformity polypropylene modified master batch and preparation method thereof | |
| CN110819105B (en) | Nylon composite material and preparation method and application thereof | |
| CN111171591A (en) | Extrusion molding formula and molding method for PE plastic wood without granulation | |
| CN110724384A (en) | Multipurpose noctilucent powder particle and preparation method thereof | |
| CN112409712A (en) | Composition comprising polyvinyl chloride, use thereof and artificial leather obtained therefrom | |
| CN115073890B (en) | PBAT composite material and preparation method thereof | |
| CN114181465A (en) | Low-dielectric polypropylene composition and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190820 |
|
| WW01 | Invention patent application withdrawn after publication |