CN116178838A - Modified polypropylene material and preparation method thereof - Google Patents
Modified polypropylene material and preparation method thereof Download PDFInfo
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- CN116178838A CN116178838A CN202211621567.1A CN202211621567A CN116178838A CN 116178838 A CN116178838 A CN 116178838A CN 202211621567 A CN202211621567 A CN 202211621567A CN 116178838 A CN116178838 A CN 116178838A
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- -1 polypropylene Polymers 0.000 title claims abstract description 66
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 52
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 18
- 239000001301 oxygen Substances 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000003063 flame retardant Substances 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 12
- 239000011256 inorganic filler Substances 0.000 claims abstract description 12
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 12
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 239000004611 light stabiliser Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 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 group 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 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 2
- 241001474374 Blennius Species 0.000 claims description 2
- 235000014653 Carica parviflora Nutrition 0.000 claims description 2
- 241000243321 Cnidaria Species 0.000 claims description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 2
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 239000012757 flame retardant agent Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- 239000004594 Masterbatch (MB) Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000638 stimulation Effects 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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The modified polypropylene material and the preparation method thereof relate to the technical field of automobile materials and solve the problem of large odor of the polypropylene material. Comprises polypropylene: 70-90 parts; 5-15 parts of inorganic filler; toughening material: 5-15 parts; reinforcing master batches: 10-20 parts; an antioxidant: 0.4 to 1.0 part; flame retardant: 3-15 parts; light stabilizers: 0.2 to 0.6 part; and (3) a lubricant: 0.2 to 0.6 part; 1-20 parts of natural negative oxygen ion powder; 0.2 to 2 portions of silane coupling agent. Mixing polypropylene and inorganic filler in an internal mixer, adding negative oxygen ion powder, sequentially adding halogen-free flame retardant and silane coupling agent, and finally adding antioxidant, mixing to obtain premix; continuously introducing nitrogen into the extruder, and melting, extruding and granulating the premix; starting a vacuum extractor during discharging, and controlling the vacuum degree in the machine barrel to be-0.02 to-0.05 MPa; the extrudate is pelletized, cooled and dried.
Description
Technical Field
The invention relates to the technical field of automobile materials, in particular to a modified polypropylene material and a preparation method thereof.
Background
With recent national regulatory requirements and consumer importance to in-car health, in-car air quality has been receiving attention from the automotive industry. Nonmetallic materials in automotive interiors are a major factor affecting the quality of air in vehicles, and therefore, the management of odor and VOC (volatile organic compound) properties of nonmetallic materials is a key to control the quality of air in vehicles.
The polypropylene material is the largest in the interior material of the whole vehicle, the polypropylene material accounts for about 20% of the nonmetal material of the whole vehicle in most vehicle types, the polypropylene material is about 25kg in the interior, and the ratio is the highest. Therefore, the performance of controlling the odor and VOC of polypropylene materials is a key influencing factor for the air quality in the whole vehicle.
At present, most PP materials used for automotive interiors are produced in a traditional mode, and in order to improve the smell and VOC of the materials, some manufacturers try to bake the materials through raw material particles and products. However, this can lead to dual pressures of cycle time and cost.
Disclosure of Invention
In order to solve the problem of large odor of the polypropylene material, the invention provides a modified polypropylene material and a preparation method thereof.
The technical scheme of the invention is as follows:
the modified polypropylene material comprises the following components in parts by weight:
polypropylene: 70-90 parts; 5-15 parts of inorganic filler; toughening material: 5-15 parts; reinforcing master batches: 10-20 parts; an antioxidant: 0.4 to 1.0 part; flame retardant: 3-15 parts; light stabilizers: 0.2 to 0.6 part; and (3) a lubricant: 0.2 to 0.6 part; 1-20 parts of natural negative oxygen ion powder; 0.2 to 2 portions of silane coupling agent.
Preferably, the polypropylene is a homo-polypropylene, a co-polypropylene or a mixture of both.
Preferably, the polypropylene is prepared by the spheronizone process or spheroniol process.
Preferably, the negative oxygen ion material comprises seaweed extract, crushed marine rock bed, marine coral powder and natural shell powder material, wherein the mass ratio of the natural shell powder is not more than 50%.
Preferably, the flame retardant is ammonium polyphosphate, pentaerythritol, melamine or a mixture of at least two thereof.
Preferably, the antioxidant is an antioxidant 1010 or 1076 antioxidant.
Preferably, the toughening material is an ethylene-octene copolymer.
Preferably, the lubricant is zinc stearate, EBS, paraffin wax or a mixture of at least two thereof.
The preparation method of the modified polypropylene material comprises the following steps:
s1, weighing raw materials according to weight proportions;
s2, placing polypropylene and inorganic filler into an internal mixer, mixing for 1-6 min, then adding negative oxygen ion powder, mixing for 3-10 min, sequentially adding a halogen-free flame retardant and a silane coupling agent, mixing for 3-10 min, finally adding an antioxidant, and mixing for 1-5 min to obtain a premix;
s3, continuously introducing nitrogen into the double-screw extruder, and adding the premix into a feed hopper of the double-screw extruder for melt extrusion granulation;
s4, when the double-screw extruder starts discharging, starting a vacuum extractor, and controlling the vacuum degree in the barrel of the double-screw extruder to be-0.02 MPa to-0.05 MPa;
s5, granulating, cooling and drying the double-screw extruder product to obtain a target product.
Preferably, the temperature of the front section of the double-screw extruder is 190-210 ℃, the temperature of the middle section is 180-190 ℃, the temperature of the rear section is 165-180 ℃, the rotating speed of the screw is 30-45 r/min, the residence time of the premix in the screw is 3-8 min, and the extrusion pressure is 3-15 MPa.
Compared with the prior art, the invention solves the problem of large odor of the polypropylene material and has the following specific beneficial effects:
according to the invention, a certain amount of natural negative oxygen ion powder is added into polypropylene, and the polypropylene can be applied to automobile interior trim on the premise of meeting mechanical properties, so that subjective evaluation odor of PP materials and products can be reduced, and because negative oxygen ions have adsorption, aggregation and sedimentation effects on suspended particles in air, the air in an automobile is purified, and the polypropylene composite material is particularly suitable for parts with larger PP application amount in the automobile interior trim, can be applied to but not limited to automobile door inner plates, automobile interior trim plates, instrument panels, auxiliary instrument panels, seat back plates and the like, can bring better odor and better driving experience, and has important positive effects on improving the air quality in the automobile.
Detailed Description
In order to make the technical solution of the present invention more clear, the following description of the technical solution of the embodiments of the present invention will be clearly and completely described, and it should be noted that the following embodiments are only used for better understanding the technical solution of the present invention, and should not be construed as limiting the present invention.
Example 1.
This example prepared a modified polypropylene according to the following procedure:
s1, weighing homo-polypropylene according to parts by weight: 75 parts of inorganic filler, 8 parts of toughening material (POE) and reinforcing master batch: 16 parts of antioxidant 1010:0.5 part of pentaerythritol as a flame retardant: 6 parts of light stabilizer: 0.2 parts of lubricant zinc stearate: 0.4 parts of natural negative oxygen ion powder 10 parts (containing 4 parts of natural shell powder) and 0.8 part of silane coupling agent;
s2, placing polypropylene and inorganic filler into an internal mixer, mixing at a high speed for 3min, then adding negative oxygen ion powder, mixing at a low speed for 5min, sequentially adding a flame retardant, a silane coupling agent and POE, mixing at a low speed for 5min, finally adding an antioxidant, a light stabilizer and a lubricant, and mixing at a high speed for 3min to obtain a premix;
s3, continuously introducing nitrogen into the double-screw extruder, adding the premix in the step S2 into a feed hopper of the double-screw extruder, and performing melt extrusion granulation, wherein the temperature of the front section in the double-screw extruder is controlled to be 200 ℃, the temperature of the middle section is controlled to be 190 ℃, the temperature of the rear section is controlled to be 175 ℃, the rotating speed of a screw is controlled to be 37r/min, the residence time of the premix in the screw is controlled to be 5min, and the extrusion pressure is controlled to be 10MPa;
s4, when the double-screw extruder starts discharging, starting a vacuum extractor, and controlling the vacuum degree in the barrel of the double-screw extruder to be-0.04 MPa;
s5, granulating, cooling and drying the twin-screw extruder product in the step S4 to obtain a target product: modified polypropylene material.
The physical and chemical properties of the product material prepared in this example were examined and the odor was evaluated, and the result was an odor score of 2.5 points.
The odor assessment score scale (lower better):
1, the method comprises the following steps: no smell was felt;
2, the method comprises the following steps: the smell can be felt, but the smell is not stimulated to people;
3, the method comprises the following steps: the smell is obviously felt, but the smell is not stimulated to people;
4, the following steps: the smell can be obviously felt, and the product has stimulation to people;
5, the method comprises the following steps: the smell is strong in human irritation;
and 6, dividing: the smell is strong to human stimulus and cannot be tolerated.
Example 2.
This example prepared a modified polypropylene according to the following procedure:
s1, weighing homo-polypropylene according to parts by weight: 80 parts of inorganic filler, 5 parts of toughening material (POE) and 5 parts of reinforcing master batch: 10 parts of antioxidant 1010:0.5 part of pentaerythritol as a flame retardant: 6 parts of light stabilizer: 0.4 parts of lubricant zinc stearate: 0.4 parts of natural negative oxygen ion powder 9 parts (containing 4 parts of natural shell powder) and 0.6 part of silane coupling agent;
s2, placing polypropylene and inorganic filler into an internal mixer, mixing at a high speed for 8min, then adding negative oxygen ion powder, mixing at a low speed for 5min, sequentially adding a flame retardant, a silane coupling agent and POE, mixing at a low speed for 5min, finally adding an antioxidant, a light stabilizer and a lubricant, and mixing at a high speed for 8min to obtain a premix;
s3, continuously introducing nitrogen into the double-screw extruder, adding the premix in the step S2 into a feed hopper of the double-screw extruder, and performing melt extrusion granulation, wherein the temperature of the front section in the double-screw extruder is controlled to be 200 ℃, the temperature of the middle section is controlled to be 190 ℃, the temperature of the rear section is controlled to be 175 ℃, the rotating speed of a screw is controlled to be 37r/min, the residence time of the premix in the screw is controlled to be 5min, and the extrusion pressure is controlled to be 10MPa;
s4, when the double-screw extruder starts discharging, starting a vacuum extractor, and controlling the vacuum degree in the barrel of the double-screw extruder to be-0.02 MPa;
s5, granulating, cooling and drying the double-screw extruder product in the step S4 to obtain the target product.
The product prepared in this example was subjected to physical and chemical property test and odor evaluation, and the odor was scored for 3 minutes.
Example 3.
This example prepared a modified polypropylene according to the following procedure:
s1, weighing homo-polypropylene according to parts by weight: 90 parts of inorganic filler 12 parts, 8 parts of toughening material (POE) and reinforcing master batch: 12 parts of antioxidant 1010:1 part of melamine as a flame retardant: 9 parts of light stabilizer: 0.5 parts of lubricant zinc stearate: 0.5 part of natural negative oxygen ion powder 12 parts (containing 5 parts of natural shell powder) and 0.6 part of silane coupling agent;
s2, placing polypropylene and inorganic filler into an internal mixer, mixing at a high speed for 4min, adding negative oxygen ion powder, mixing at a low speed for 4min, sequentially adding a flame retardant, a silane coupling agent and POE, mixing at a low speed for 4min, and finally adding an antioxidant, a light stabilizer and a lubricant, and mixing at a high speed for 4min to obtain a premix;
s3, continuously introducing nitrogen into the double-screw extruder, adding the premix in the step S2 into a feed hopper of the double-screw extruder, and performing melt extrusion granulation, wherein the temperature of the front section in the double-screw extruder is controlled to be 200 ℃, the temperature of the middle section is controlled to be 190 ℃, the temperature of the rear section is controlled to be 175 ℃, the rotating speed of a screw is controlled to be 37r/min, the residence time of the premix in the screw is controlled to be 5min, and the extrusion pressure is controlled to be 10MPa;
s4, when the double-screw extruder starts discharging, starting a vacuum extractor, and controlling the vacuum degree in the barrel of the double-screw extruder to be-0.03 MPa;
s5, granulating, cooling and drying the double-screw extruder product in the step S4 to obtain the target product.
The product prepared in this example was subjected to physical and chemical property test and odor evaluation, and the odor was scored for 2 points.
According to the modified polypropylene material, a certain amount of natural negative oxygen ion powder is added into polypropylene, the modified polypropylene material is applied to automobile interior trim on the premise of meeting mechanical properties, subjective evaluation smell of PP materials and products can be reduced, and because negative oxygen ions have adsorption, aggregation and sedimentation effects on suspended particles in air, the air in an automobile is purified, and the modified polypropylene material is particularly suitable for parts with larger PP application amount of the automobile interior trim, can be applied to but not limited to automobile door inner plates, automobile interior trim plates, instrument panels, auxiliary instrument panels, seat back plates and the like, can bring better smell and better driving experience, and has important positive effects on improving the air quality in the automobile.
Claims (10)
1. The modified polypropylene material is characterized by comprising the following components in parts by weight:
polypropylene: 70-90 parts; 5-15 parts of inorganic filler; toughening material: 5-15 parts; reinforcing master batches: 10-20 parts; an antioxidant: 0.4 to 1.0 part; flame retardant: 3-15 parts; light stabilizers: 0.2 to 0.6 part; and (3) a lubricant: 0.2 to 0.6 part; 1-20 parts of natural negative oxygen ion powder; 0.2 to 2 portions of silane coupling agent.
2. The modified polypropylene material according to claim 1, wherein the polypropylene is homo-polypropylene, co-polypropylene or a mixture of both.
3. The modified polypropylene material according to claim 1, wherein the polypropylene is prepared by a Spherizone process or a Spheripol process.
4. The modified polypropylene material according to claim 1, wherein the negative oxygen ion material comprises seaweed extract, crushed marine rock, marine coral powder and natural shell powder material, wherein the natural shell powder is present in an amount of not more than 50% by mass.
5. The modified polypropylene material according to claim 1, wherein the flame retardant is ammonium polyphosphate, pentaerythritol, melamine or a mixture of at least two thereof.
6. The modified polypropylene material according to claim 1, wherein the antioxidant is an antioxidant 1010 or 1076 antioxidant.
7. The modified polypropylene material according to claim 1, wherein the toughening material is an ethylene-octene copolymer.
8. The modified polypropylene material according to claim 1, wherein the lubricant is zinc stearate, EBS, paraffin wax or a mixture of at least two thereof.
9. A process for the preparation of a modified polypropylene material as claimed in any one of claims 1 to 8, comprising the steps of:
s1, weighing raw materials according to weight proportions;
s2, placing polypropylene and inorganic filler into an internal mixer, mixing for 1-6 min, then adding negative oxygen ion powder, mixing for 3-10 min, sequentially adding a halogen-free flame retardant and a silane coupling agent, mixing for 3-10 min, finally adding an antioxidant, and mixing for 1-5 min to obtain a premix;
s3, continuously introducing nitrogen into the double-screw extruder, and adding the premix into a feed hopper of the double-screw extruder for melt extrusion granulation;
s4, when the double-screw extruder starts discharging, starting a vacuum extractor, and controlling the vacuum degree in the barrel of the double-screw extruder to be-0.02 MPa to-0.05 MPa;
s5, granulating, cooling and drying the double-screw extruder product to obtain a target product.
10. The method for preparing a modified polypropylene material according to claim 9, wherein the twin-screw extruder has a front stage temperature of 190 ℃ to 210 ℃, a middle stage temperature of 180 ℃ to 190 ℃, a rear stage temperature of 165 ℃ to 180 ℃, a rotational speed of 30r/min to 45r/min, a residence time of premix in the screw of 3min to 8min, and an extrusion pressure of 3MPa to 15MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621567.1A CN116178838A (en) | 2022-12-16 | 2022-12-16 | Modified polypropylene material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621567.1A CN116178838A (en) | 2022-12-16 | 2022-12-16 | Modified polypropylene material and preparation method thereof |
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| CN116178838A true CN116178838A (en) | 2023-05-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750997A (en) * | 2016-12-25 | 2017-05-31 | 合肥会通新材料有限公司 | A kind of low odor polypropylene composite material and preparation method thereof |
| CN108841076A (en) * | 2018-05-29 | 2018-11-20 | 芜湖创科新材料科技有限公司 | A kind of low smell, it is low distribute, flame-retardant polypropylene composite material and preparation method thereof |
| CN110372955A (en) * | 2019-07-17 | 2019-10-25 | 江苏兴鼎塑料科技有限公司 | A kind of low smell MODIFIED PP plastics and preparation method thereof |
| WO2021077675A1 (en) * | 2019-10-23 | 2021-04-29 | 南京长三角绿色发展研究院有限公司 | Flame retardant and antimicrobial composite polypropylene filter material and preparation method thereof |
-
2022
- 2022-12-16 CN CN202211621567.1A patent/CN116178838A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106750997A (en) * | 2016-12-25 | 2017-05-31 | 合肥会通新材料有限公司 | A kind of low odor polypropylene composite material and preparation method thereof |
| CN108841076A (en) * | 2018-05-29 | 2018-11-20 | 芜湖创科新材料科技有限公司 | A kind of low smell, it is low distribute, flame-retardant polypropylene composite material and preparation method thereof |
| CN110372955A (en) * | 2019-07-17 | 2019-10-25 | 江苏兴鼎塑料科技有限公司 | A kind of low smell MODIFIED PP plastics and preparation method thereof |
| WO2021077675A1 (en) * | 2019-10-23 | 2021-04-29 | 南京长三角绿色发展研究院有限公司 | Flame retardant and antimicrobial composite polypropylene filter material and preparation method thereof |
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