CN107778798A - A kind of PLA resin is material modified and preparation method thereof - Google Patents
A kind of PLA resin is material modified and preparation method thereof Download PDFInfo
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- CN107778798A CN107778798A CN201610767037.6A CN201610767037A CN107778798A CN 107778798 A CN107778798 A CN 107778798A CN 201610767037 A CN201610767037 A CN 201610767037A CN 107778798 A CN107778798 A CN 107778798A
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- 239000000463 material Substances 0.000 title claims abstract description 41
- 239000011347 resin Substances 0.000 title claims abstract description 27
- 229920005989 resin Polymers 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920000168 Microcrystalline cellulose Polymers 0.000 claims abstract description 19
- 235000019813 microcrystalline cellulose Nutrition 0.000 claims abstract description 19
- 239000008108 microcrystalline cellulose Substances 0.000 claims abstract description 18
- 229940016286 microcrystalline cellulose Drugs 0.000 claims abstract description 18
- 239000004743 Polypropylene Substances 0.000 claims abstract description 12
- 239000011256 inorganic filler Substances 0.000 claims abstract description 11
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 230000032683 aging Effects 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims abstract description 8
- 239000000806 elastomer Substances 0.000 claims abstract description 8
- -1 polypropylene Polymers 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 7
- 150000002148 esters Chemical class 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000010456 wollastonite Substances 0.000 claims description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 125000005586 carbonic acid group Chemical group 0.000 claims 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical group CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims 1
- 235000019260 propionic acid Nutrition 0.000 claims 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 claims 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims 1
- 238000005453 pelletization Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 23
- 239000004626 polylactic acid Substances 0.000 description 23
- KWUZCAVKPCRJPO-UHFFFAOYSA-N n-ethyl-4-(6-methyl-1,3-benzothiazol-2-yl)aniline Chemical group C1=CC(NCC)=CC=C1C1=NC2=CC=C(C)C=C2S1 KWUZCAVKPCRJPO-UHFFFAOYSA-N 0.000 description 6
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical group CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000012745 toughening agent Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 235000010980 cellulose Nutrition 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000012620 biological material Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
It is material modified and preparation method thereof the invention discloses a kind of PLA resin, to solve the problems, such as PLA material poor heat resistance, low intensity, poor toughness, more crisp.A kind of PLA is material modified to be prepared by following parts by weight of component：42 86 parts of PLA, 58 parts of inorganic filler, maleic anhydride inoculated polypropylene（PP‑g‑MA）1 10 parts, microcrystalline cellulose（MCC）5 20 parts, 3 20 parts, 13 parts heat-resistant aging agents of elastomer, 0.1 0.4 parts of antioxidant, 0.1 0.3 parts of lubricants.Add in high mixer and stir after above-mentioned substance is proportionally mixed, extruded, stretched successively by double screw extruder, cooling pelletization obtains PLA resin modified materials.Present invention is mainly used for prepare PLA resin modified materials.
Description
Technical field：
The present invention relates to a kind of PLA resin material and preparation method thereof.
Background technology：
Polylactic acid PLA as emerging biomaterial has an excellent biocompatibility and preferable mechanical property, nontoxic,
Plasticity it is strong and it is biodegradable be widely used in packaging for foodstuff, agriculture and forestry, clothes and medicine and hygiene fieldses completely, be at present most
One of promising renewable polymeric materials.But the elasticity due to the material, flexibility and impact strength poor-performing, easily
Flexural deformation, it greatly limit its application field.
Using natural plant fibre as raw material, the microcrystalline cellulose being prepared by a series of physical chemical process is a kind of
Polymer crystallite, not only there is natural reproducible, pollution-free, good biocompatibility, while also there is good intensity
And it is rigid, it is commonly used for the modified filler of composite.
The content of the invention
It is an object of the invention to provide a kind of PLA resin material and preparation method thereof with solve PLA material poor heat resistance,
Low intensity, poor toughness, it is more crisp the problem of.The present invention uses microcrystalline cellulose as filler, from maleic anhydride inoculated polypropylene
As interfacial compatibilizer to improve the interface compatibility of microcrystalline cellulose and PP, and added simultaneously using toughener, due to toughness reinforcing
Agent is with less energy cohesive energy and higher shearing sensibility so that and microcrystalline cellulose may be homogenously dispersed in base-material, and
Toughener has energy-absorbing function in itself.PLA resin prepared by the present invention has rigidity and toughness and biocompatibility well, pole
The earth extends the use range of this material.
A kind of PLA resin of the present invention is material modified, is made up of following parts by weight of component：
PLA 42-86 parts,
Inorganic filler 5-8 parts,
Maleic anhydride inoculated polypropylene (PP-g-MA) 1-10 parts,
Microcrystalline cellulose (MCC) 5-20 parts,
Elastomer 3-20 parts,
Heat-resistant aging agent 1-3 parts,
Antioxidant 0.1-0.4 parts,
Lubricant 0.1-0.3 parts.
Described inorganic filler is the one or more in calcium carbonate, talcum powder, wollastonite, mica.
The elastomer is at least one in ethylene-butene copolymer, ethylene-octene copolymer and ethylene propylene diene rubber
Kind.
The heat-resistant aging agent is thio-2 acid two (18) ester.
The antioxidant is antioxidant 1010 and irgasfos 168 mixture.
The lubricant is pentaerythritol stearate or ethylene bis stearic acid amide.
A kind of material modified preparation method of PLA resin, is completed according to the following steps：Each group is weighed by above weight fraction
Divide raw material, add in high temperature machine, be stirred 6min-8min at being 100-120 DEG C in temperature, squeezed by double screw extruder
Go out, stretch, cooling granulation obtains that PLA resin is material modified, and double screw extruder is in extrusion, from material mouth at mouth mold
Technological temperature is respectively：1st area：135-140 DEG C, 2nd area：140-150 DEG C, 3rd area：150-160 DEG C, 4th area：165-170 DEG C, 5th area：
170-175 DEG C, 6th area：175-180 DEG C, melt pressure 2MPa-10MPa.
The present invention uses microcrystalline cellulose as filler, from maleic anhydride inoculated polypropylene as interfacial compatibilizer to change
The interface compatibility of kind microcrystalline cellulose and PP, and the use of toughener is elastomer while adds, due to toughener with compared with
Small energy cohesive energy and higher shearing sensibility so that microcrystalline cellulose may be homogenously dispersed in base-material, and toughener is in itself
With energy-absorbing function.PLA resin prepared by the present invention has rigidity and toughness and biocompatibility well, greatly extends
The use range of this material.
Embodiment
Embodiment 1：
Weigh 67 parts of PLA, 6 parts of inorganic filler calcium carbonate, 5 parts of maleic anhydride inoculated polypropylene (PP-g-MA), crystallite
12 parts of cellulose (MCC), 10 parts, 2 parts heat-resistant aging agent thio-2 acid two (18) esters of elastomeric ethylene-butylene copolymer,
0.1 part of antioxidant 1010,0.1 part of irgasfos 168,0.2 part of lubricant pentaerythritol stearate are added in high temperature machine, in temperature
To be stirred 7min at 110 DEG C, extrude, stretch by double screw extruder, that cooling granulation obtains PLA resin is material modified,
Double screw extruder is respectively in extrusion, from technological temperature of the material mouth at mouth mold：1st area：135-140 DEG C, 2nd area：
140-150 DEG C, 3rd area：150-160 DEG C, 4th area：165-170 DEG C, 5th area：170-175 DEG C, 6th area：175-180 DEG C, melt pressure is
6MPa。
Embodiment 2：
Weigh 86 parts of PLA, 5 parts of inorganic filler talcum powder, 1 part of maleic anhydride inoculated polypropylene (PP-g-MA), crystallite
5 parts of cellulose (MCC), 3 parts, 1 part heat-resistant aging agent thio-2 acid two (18) ester of elastomer ethylene propylene diene rubber, 0.04 part
Antioxidant 1010,0.06 part of irgasfos 168,0.1 part of lubricant ethylene bis stearic acid amide are added in high temperature machine, are in temperature
6min is stirred at 100 DEG C, extrudes, stretch by double screw extruder, that cooling granulation obtains PLA resin is material modified, it is double
Screw extruder is respectively in extrusion, from technological temperature of the material mouth at mouth mold：1st area：135-140 DEG C, 2nd area：140-
150 DEG C, 3rd area：150-160 DEG C, 4th area：165-170 DEG C, 5th area：170-175 DEG C, 6th area：175-180 DEG C, melt pressure 2MPa.
Embodiment 3：
Weigh 42 parts of PLA, inorganic filler wollastonite and mica is each 8 parts, maleic anhydride inoculated polypropylene (PP-g-MA)
10 parts, 20 parts of microcrystalline cellulose (MCC), 20 parts, 3 parts heat-resistant aging agent thio-2 acids two of elastomeric ethylene-octene copolymer
(18) ester, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168,0.2 part of lubricant ethylene bis stearic acid amide, 0.1 part of lubrication
Agent pentaerythritol stearate is added in high temperature machine, is stirred 6min at being 100 DEG C in temperature, is squeezed by double screw extruder
Go out, stretch, cooling granulation obtains that PLA resin is material modified, and double screw extruder is in extrusion, from material mouth at mouth mold
Technological temperature is respectively：1st area：135-140 DEG C, 2nd area：140-150 DEG C, 3rd area：150-160 DEG C, 4th area：165-170 DEG C, 5th area：
170-175 DEG C, 6th area：175-180 DEG C, melt pressure 2MPa.
Embodiment 4：
Weigh 61 parts of PLA, 3 parts of inorganic filler wollastonite, 4 parts of inorganic filler talcum powder, maleic anhydride inoculated polypropylene
(PP-g-MA) 3 parts, 17 parts of microcrystalline cellulose (MCC), 6 parts of elastomeric ethylene-octene copolymer, elastomer ethylene propylene diene rubber 6
Part, 2 parts of heat-resistant aging agent thio-2 acid two (18) esters, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.2 part of lubrication
Agent pentaerythritol stearate is added in high temperature machine, is stirred 7min at being 110 DEG C in temperature, is squeezed by double screw extruder
Go out, stretch, cooling granulation obtains that PLA resin is material modified, and double screw extruder is in extrusion, from material mouth at mouth mold
Technological temperature is respectively：1st area：135-140 DEG C, 2nd area：140-150 DEG C, 3rd area：150-160 DEG C, 4th area：165-170 DEG C, 5th area：
170-175 DEG C, 6th area：175-180 DEG C, melt pressure 8MPa.
Embodiment 5：
Weigh 53 parts of PLA, 6 parts of inorganic filler talcum powder, 8 parts of maleic anhydride inoculated polypropylene (PP-g-MA), crystallite
15 parts of cellulose (MCC), 18 parts, 1.5 parts heat-resistant aging agent thio-2 acid two (18) esters of elastomeric ethylene-octene, 0.1 part
Antioxidant 1010,0.1 part of irgasfos 168,0.1 part of lubricant pentaerythritol stearate are added in high temperature machine, are 110 in temperature
7min is stirred at DEG C, extrudes, stretch by double screw extruder, cooling granulation obtains PLA resin material modified, twin-screw
Extruder is respectively in extrusion, from technological temperature of the material mouth at mouth mold：1st area：135-140 DEG C, 2nd area：140-150
DEG C, 3rd area：150-160 DEG C, 4th area：165-170 DEG C, 5th area：170-175 DEG C, 6th area：175-180 DEG C, melt pressure 4MPa.
The intensity and toughness of modification PLA resin prepared by the present invention are all greatly improved, and greatly expand this material
Application field.
Claims (7)
1. a kind of PLA resin is material modified, it is made up of following parts by weight of component：
PLA 42-86 parts,
Inorganic filler 5-8 parts,
Maleic anhydride inoculated polypropylene 1-10 parts,
Microcrystalline cellulose 5-20 parts,
Elastomer 3-20 parts,
Heat-resistant aging agent 1-3 parts,
Antioxidant 0.1-0.4 parts,
Lubricant 0.1-0.3 parts.
2. a kind of PLA resin according to claim 1 is material modified, it is characterised in that described inorganic filler is carbonic acid
One or more in calcium, talcum powder, wollastonite, mica.
3. a kind of PLA resin according to claim 1 is material modified, it is characterised in that the elastomer is Ethylene/Butylene
At least one of copolymer, ethylene-octene copolymer and ethylene propylene diene rubber.
4. a kind of PLA resin according to claim 1 is material modified, it is characterised in that the heat-resistant aging agent is thio two
Propionic acid two (18) ester.
It is 5. material modified according to a kind of PLA resin described in claim 1, it is characterised in that the antioxidant be antioxidant 1010 and
Irgasfos 168 mixture.
It is 6. material modified according to a kind of PLA resin described in claim 1, it is characterised in that the lubricant is that pentaerythrite is stearic
Acid esters or ethylene bis stearic acid amide.
A kind of 7. preparation method of any one of claim 1-6 PLA resin modifieds materials, it is characterised in that PLA resins
Material modified preparation method is completed according to the following steps：Each component raw material is weighed by above weight fraction, adds high temperature machine
In, 6min-8min is stirred at being 100-120 DEG C in temperature, extrudes, stretch by double screw extruder, cooling granulation obtains
Material modified to PLA resin, double screw extruder is respectively in extrusion, from technological temperature of the material mouth at mouth mold：1
Area：135-140 DEG C, 2nd area：140-150 DEG C, 3rd area：150-160 DEG C, 4th area：165-170 DEG C, 5th area：170-175 DEG C, 6th area：
175-180 DEG C, melt pressure 2MPa-10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767037.6A CN107778798B (en) | 2016-08-29 | 2016-08-29 | PLA resin modified material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767037.6A CN107778798B (en) | 2016-08-29 | 2016-08-29 | PLA resin modified material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107778798A true CN107778798A (en) | 2018-03-09 |
| CN107778798B CN107778798B (en) | 2022-02-18 |
Family
ID=61440436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610767037.6A Active CN107778798B (en) | 2016-08-29 | 2016-08-29 | PLA resin modified material and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107778798B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294185A (en) * | 2018-09-10 | 2019-02-01 | 武汉金发科技有限公司 | A kind of automotive bumper material and the preparation method and application thereof |
| CN109401246A (en) * | 2018-10-31 | 2019-03-01 | 安徽双平包装有限公司 | A kind of environment-protective food package bag material |
| CN112761095A (en) * | 2021-01-04 | 2021-05-07 | 苏州锦华企业服务股份有限公司 | Intelligent parking space management device |
| CN115353687A (en) * | 2022-09-30 | 2022-11-18 | 金发科技股份有限公司 | Cellulose reinforced polypropylene composition and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294185A (en) * | 2018-09-10 | 2019-02-01 | 武汉金发科技有限公司 | A kind of automotive bumper material and the preparation method and application thereof |
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| CN115353687B (en) * | 2022-09-30 | 2023-05-05 | 金发科技股份有限公司 | Cellulose reinforced polypropylene composition and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
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| CN107778798B (en) | 2022-02-18 |
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