CN111187474A - Graphene oxide/polypropylene foamed bead and preparation method thereof - Google Patents
Graphene oxide/polypropylene foamed bead and preparation method thereof Download PDFInfo
- Publication number
- CN111187474A CN111187474A CN202010026392.4A CN202010026392A CN111187474A CN 111187474 A CN111187474 A CN 111187474A CN 202010026392 A CN202010026392 A CN 202010026392A CN 111187474 A CN111187474 A CN 111187474A
- Authority
- CN
- China
- Prior art keywords
- polypropylene
- graphene oxide
- master batch
- pressure
- expanded beads
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/16—Making expandable particles
- C08J9/18—Making expandable particles by impregnating polymer particles with the blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/009—Use of pretreated compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08K2201/017—Additives being an antistatic agent
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
-
- 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
- C08K9/10—Encapsulated ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Carbon And Carbon Compounds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a graphene oxide/polypropylene foamed bead and a preparation method thereof, wherein the graphene oxide/polypropylene foamed bead comprises, by weight, 86-92 wt% of co-polypropylene, 0.5-2 wt% of a graphene oxide master batch, 1-5 wt% of a black master batch, 0.5-5 wt% of a nucleating agent and 0.5-2 wt% of a foaming auxiliary agent; the graphene oxide master batch is prepared from raw materials including 1-5 wt% of graphene oxide, 5-15 wt% of maleic anhydride grafted polypropylene and 80-94 wt% of co-polypropylene based on the mass of the graphene oxide master batch. Compared with the mode of adding other antistatic agents, the mode of adding the graphene oxide master batch into the polypropylene is adopted, so that the prepared graphene oxide/polypropylene foaming bead has a more excellent antistatic effect.
Description
Technical Field
The invention relates to the field of foaming materials, in particular to a graphene oxide/polypropylene foaming bead and a preparation method thereof.
Background
The polypropylene has the advantages of high mechanical strength, high use temperature, environmental protection, easy recovery, high cost performance and the like, so that the application field is increased day by day, and the market share is increased year by year. The foaming of the polymer is an important way for realizing the light weight of the polypropylene, and has wide application value in the fields of automobiles, rail transit, buffer packaging and the like.
The polypropylene is a non-polar polymer, and the polypropylene expanded beads are repeatedly rubbed in the processes of preparation, aging, storage, transportation and the like, so that a large amount of charges are formed on the surface of the material, and the electrostatic phenomenon is easily caused, so that potential safety hazards exist in the storage process. In order to improve the antistatic property of the polypropylene foaming beads, a certain amount of antistatic agent is required to be added into the formula. The conventional antistatic agent is mainly an organic surfactant, such as nonionic surfactants such as polyol fatty acids, and nonionic surfactants such as boron compounds. The polypropylene foaming beads involve high-temperature water boiling and high-temperature steam heating in the preparation and forming processes, and the small-molecular organic antistatic agent can gradually migrate to the surface of the material in the heating process, so that the antistatic effect of the foaming material is obviously reduced, and the phenomenon of unstable antistatic performance is caused, and the cost of the material can be obviously increased by adding a large amount of the small-molecular organic antistatic agent.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the graphene oxide/polypropylene foamed bead and the preparation method thereof, and the graphene oxide/polypropylene foamed bead has a stable antistatic effect.
The technical scheme adopted by the invention is as follows:
according to the first aspect of the invention, the graphene oxide/polypropylene foaming bead comprises, by weight, 86-92 wt% of co-polypropylene, 0.5-2 wt% of graphene oxide master batch, 1-5 wt% of black master batch, 0.5-5 wt% of nucleating agent and 0.5-2 wt% of foaming auxiliary agent; the graphene oxide master batch is prepared from raw materials including 1-5 wt% of graphene oxide, 5-15 wt% of maleic anhydride grafted polypropylene and 80-94 wt% of co-polypropylene based on the mass of the graphene oxide master batch.
According to some embodiments of the invention, in the maleic anhydride grafted polypropylene, the grafting content of maleic anhydride is 0.5-5 wt%, maleic anhydride has affinity with oxygen-containing functional groups on the surface of graphene oxide, and the increase of the grafting content of maleic anhydride improves the dispersibility of graphene oxide in a master batch.
According to some embodiments of the invention, the melt index of the polypropylene in the maleic anhydride grafted polypropylene is 10-50 g/10 min.
According to some embodiments of the invention, the concentration ratio of carbon to oxygen atoms in the graphene oxide is 5.0-10.0, and a certain concentration of oxygen-containing functional groups are required on the surface of the graphene oxide to improve the interaction between the graphene oxide and maleic anhydride grafted polypropylene, so as to improve the dispersibility of the graphene oxide in the polypropylene; the higher the carbon-oxygen ratio is, the fewer the functional groups on the surface of the graphene oxide are, and the lower the carbon-oxygen ratio is, the greater the number of the functional groups on the surface of the graphene oxide is, but the conductivity of the graphene oxide is reduced, so that the antistatic effect of the material is relatively reduced.
According to some embodiments of the invention, the concentration ratio of carbon to oxygen atoms in the graphene oxide is 6.0-8.0.
In a second aspect of the present invention, a preparation method of the graphene oxide/polypropylene expanded beads is provided, which includes the following steps:
s1, melting oxidized graphene, maleic anhydride grafted polypropylene and an antioxidant to form a mixed melt, and mixing the mixed melt with a copolymerized polypropylene melt to prepare a graphene oxide master batch;
s2, mixing the co-polypropylene, the graphene oxide master batch, the black master batch, the nucleating agent and the foaming auxiliary agent, and extruding to obtain polypropylene particles;
s3, sequentially adding water, a dispersing agent, a dispersing aid and the polypropylene particles into an autoclave, introducing high-pressure carbon dioxide fluid, heating the autoclave body, releasing pressure of the autoclave when the temperature reaches a preset temperature and the pressure reaches a preset pressure, and preparing expanded beads through crushing, dewatering and drying;
and S4, adding the expanded beads into a pressure kettle, introducing high-pressure air for carrying pressure, and introducing the foamed beads subjected to pressure carrying into a secondary foaming machine for secondary foaming to obtain secondary foamed beads.
According to some embodiments of the invention, further comprising: and step S5, injecting the secondary expanded beads into a steam forming machine, heating by steam, and cooling to obtain an expanded bead forming body.
According to some embodiments of the present invention, the melting temperature in step S1 is 160-180 ℃, and the melting time is 1-10 min.
According to some embodiments of the invention, the melting time in the step S1 is 3-5 min.
According to some embodiments of the present invention, the predetermined temperature in step S3 is 130 to 132 ℃, the predetermined pressure is 2.0 to 3.0MPa, and the expansion ratio of the expanded beads is 15 to 30 times.
According to some embodiments of the present invention, the pressure release rate of the autoclave in the step S3 is 0.1 to 1.0 MPa/min.
According to some embodiments of the present invention, the magnification of the secondary expanded beads in the step S4 is 35 to 60 times.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a graphene oxide/polypropylene foaming bead, which takes graphene oxide as a high-efficiency antistatic agent, the graphene oxide cannot migrate after being soaked and coated by polypropylene, the graphene oxide is fixed by the polypropylene to realize the solidification of an antistatic effect, and meanwhile, polar groups on the surface of the graphene oxide, such as hydroxyl, carboxyl and the like, form a compatibility effect with polypropylene grafted by maleic anhydride to improve the dispersion performance of the graphene oxide in polypropylene resin and the polypropylene foaming bead. Compared with the mode of adding other antistatic agents, the embodiment of the invention adopts the mode of adding the graphene oxide master batch into the polypropylene, so that the prepared graphene oxide/polypropylene foaming bead has more excellent antistatic effect.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
Example 1
The embodiment provides a graphene oxide/polypropylene expanded bead molded body, which is prepared according to the following steps:
s1, melting 10 wt% of maleic anhydride grafted polypropylene, 3 wt% of deeply oxidized graphite oxide block and an antioxidant at a high temperature of 160 ℃, adding the high-temperature molten mixed melt into a double-screw extruder through forced feeding, mixing with 87 wt% of copolymerized polypropylene melt, and preparing graphene oxide master batch through graphite oxide thermal reduction, screw strong shear dispersion, underwater cooling and granulation;
the graphene oxide master batch comprises 3% of graphene oxide, 10% of maleic anhydride grafted polypropylene, 15g/10min of polypropylene and 87% of copolymerized polypropylene, wherein the graphene oxide master batch is characterized in that the weight fraction of graphene oxide is 3%, the concentration ratio of carbon to oxygen atoms in the graphene oxide is 6.0, the grafting content of the maleic anhydride grafted polypropylene is 2 wt%, the melt index of the polypropylene is 15g/10min, and the weight fraction of the copolymerized polypropylene is 87%;
s2, dry-mixing 92 wt% of polypropylene copolymer, 1 wt% of graphene oxide master batch, 4 wt% of carbon black master batch, 2 wt% of nucleating agent and 1 wt% of foaming auxiliary agent, extruding, cutting, drying and screening by a double screw, and preparing polypropylene particles with the diameter of 1.0mm and the length-diameter ratio of 1.5;
s3, sequentially adding water, a dispersing agent, a dispersing aid and polypropylene particles into high pressure, introducing high-pressure carbon dioxide fluid, heating the kettle body, releasing the pressure in the high pressure kettle at the speed of 0.2MPa/min when the temperature reaches 131 ℃ and the pressure reaches 2.5MPa, expanding polypropylene particles, and preparing expanded beads with the multiplying power of 20 times through crushing, centrifugal dehydration and fluidized bed drying;
s4, injecting the black polypropylene foaming particles into a pressure kettle, introducing high-pressure air for carrying pressure for a certain time, introducing the black polypropylene particles after carrying pressure into a secondary foaming machine for secondary foaming, and preparing secondary foaming beads with the multiplying power of 45 times;
s5, injecting the secondary expanded beads into a steam forming machine, and carrying out the steps of steam heating, cooling, draining, demoulding, drying, aging and the like to obtain the expanded bead forming body material.
The information on the expansion ratio, color, electric resistance and tensile strength of the molded article of the expanded polypropylene beads is shown in Table 1.
Example 2
The embodiment provides a graphene oxide/polypropylene expanded bead molded body, which is prepared according to the following steps:
s1, melting 15 wt% of maleic anhydride grafted polypropylene, 5 wt% of deeply oxidized graphite oxide block and an antioxidant at a high temperature of 160 ℃, adding the high-temperature molten mixed melt into a double-screw extruder through forced feeding, mixing with 80 wt% of copolymerized polypropylene melt, and preparing graphene oxide master batch through graphite oxide thermal reduction, screw strong shear dispersion, underwater cooling and granulation;
the graphene oxide master batch comprises, by weight, 5% of graphene oxide, 10.0% of carbon-oxygen atom concentration ratio in the graphene oxide, 10% of maleic anhydride grafted polypropylene, 5% of maleic anhydride grafted content, 30g/10min of polypropylene melt index and 80% of copolymerized polypropylene;
s2, dry-mixing the polypropylene copolymer with the weight percentage of 87%, the graphene oxide master batch with the weight percentage of 1%, the carbon black master batch with the weight percentage of 5%, the nucleating agent with the weight percentage of 5% and the foaming auxiliary agent with the weight percentage of 2%, extruding, cutting, pulling, drying and screening by a double screw rod to prepare the polypropylene particles with the diameter of 1.0mm and the length-diameter ratio of 1.5;
s3, sequentially adding water, a dispersing agent, a dispersing aid and polypropylene particles into high pressure, introducing high-pressure carbon dioxide fluid, heating the kettle body, releasing the pressure in the high pressure kettle at the speed of 0.3MPa/min when the temperature reaches 132 ℃ and the pressure reaches 3.0MPa, expanding polypropylene particles, and preparing expanded beads with the multiplying power of 30 times through crushing, centrifugal dehydration and fluidized bed drying;
s4, injecting the black polypropylene foaming particles into a pressure kettle, introducing high-pressure air for carrying pressure for a certain time, introducing the black polypropylene particles after carrying pressure into a secondary foaming machine for secondary foaming, and preparing secondary foaming beads with the multiplying power of 60 times;
s5, injecting the secondary expanded beads into a steam forming machine, and carrying out the steps of steam heating, cooling, draining, demoulding, drying, aging and the like to obtain the expanded bead forming body material.
The information on the expansion ratio, color, electric resistance and tensile strength of the molded article of the expanded polypropylene beads is shown in Table 1.
Effect example 1
Comparative example 1: comparative example 1 provides a polypropylene expanded bead molded article, and the other expansion process and steam molding process are the same as those of example 1 except that 5% of carbon black masterbatch is added in step S2, and no graphene oxide masterbatch is added.
Comparative example 2: comparative example 1 provides a polypropylene expanded bead molded article, and the other expansion process and steam molding process are the same as those of example 2 except that 5% of carbon black masterbatch is added in step S2, and no graphene oxide masterbatch is added.
Comparative example 3: comparative example 2 provides a polypropylene expanded bead molding, and the other expansion process and steam forming process are the same as those of example 1 except that 5% of carbon black color master and 5% of ethoxylated alkylamine antistatic agent are added in step S2, and no graphene oxide master batch is added.
Comparative example 4: comparative example 2 provides a polypropylene expanded bead molded body, other expansion processes and steam forming processes are the same as those of example 2, 5% of carbon black color masterbatch and 5% of ethoxylated alkylamine alkyl acid antistatic agent are added in step S2, and no graphene oxide masterbatch is added.
The results of measuring the magnification, color depth and electric resistance of the molded articles of the polypropylene fine particles, the secondary expanded beads and the expanded beads in examples 1 to 2 and comparative examples 1 to 4 are shown in Table 1.
TABLE 1 Properties of the polypropylene fine particles, the secondary expanded beads and the expanded bead moldings in example 1 and comparative examples 1 to 2
The results in table 1 show that, under the condition of the same foaming multiplying power, the foamed bead forming body prepared by adding graphene oxide to form a graphene oxide master batch in the embodiment of the invention has a moderate black color and a low resistance value, which indicates that the material has a good antistatic effect, while the foamed bead forming body prepared by adding only 5 wt% of black master batch in comparative examples 1-2 has a too light color and a too high resistance value, which cannot achieve the antistatic effect, and the foamed bead forming body prepared by adding organic antistatic agent in comparative examples 3-4 has a too light color and a poor antistatic effect. In addition, under the condition of the same expansion ratio, the tensile strength of the formed expanded bead is low by only adding 5 wt% of black master batch, but the tensile strength of the formed expanded bead can be enhanced by adding the graphene oxide master batch in the embodiment of the invention, the tensile strength of the formed expanded bead with the expansion ratio of 45 times can reach 0.8-1.2 MPa, and the tensile strength of the formed expanded bead with the expansion ratio of 60 times can reach 0.4-0.6 MPa.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The graphene oxide/polypropylene foamed bead is characterized by comprising 86-92 wt% of co-polypropylene, 0.5-2 wt% of graphene oxide master batch, 1-5 wt% of black master batch, 0.5-5 wt% of nucleating agent and 0.5-2 wt% of foaming auxiliary agent by weight; the graphene oxide master batch is prepared from raw materials including 1-5 wt% of graphene oxide, 5-15 wt% of maleic anhydride grafted polypropylene and 80-94 wt% of co-polypropylene based on the mass of the graphene oxide master batch.
2. The graphene oxide/polypropylene expanded bead according to claim 1, wherein the maleic anhydride-grafted polypropylene has a maleic anhydride graft content of 0.5 to 5 wt%.
3. The graphene oxide/polypropylene expanded bead according to claim 1, wherein the melt index of polypropylene in the maleic anhydride grafted polypropylene is 10-50 g/10 min.
4. The graphene oxide/polypropylene expanded beads according to any one of claims 1 to 3, wherein the concentration ratio of carbon to oxygen atoms in the graphene oxide is 5.0 to 10.0.
5. The graphene oxide/polypropylene expanded beads according to claim 4, wherein the concentration ratio of carbon to oxygen atoms in the graphene oxide is 6.0 to 8.0.
6. The method for preparing graphene oxide/polypropylene expanded beads according to any one of claims 1 to 5, comprising the steps of:
s1, melting oxidized graphene, maleic anhydride grafted polypropylene and an antioxidant to form a mixed melt, and mixing the mixed melt with a copolymerized polypropylene melt to prepare a graphene oxide master batch;
s2, mixing the co-polypropylene, the graphene oxide master batch, the black master batch, the nucleating agent and the foaming auxiliary agent, and extruding to obtain polypropylene particles;
s3, sequentially adding water, a dispersing agent, a dispersing aid and the polypropylene particles into an autoclave, introducing high-pressure carbon dioxide fluid, heating the autoclave body, releasing pressure of the autoclave when the temperature reaches a preset temperature and the pressure reaches a preset pressure, and preparing expanded beads through crushing, dewatering and drying;
and S4, adding the expanded beads into a pressure kettle, introducing high-pressure air for carrying pressure, and introducing the foamed beads subjected to pressure carrying into a secondary foaming machine for secondary foaming to obtain secondary foamed beads.
7. The method for preparing graphene oxide/polypropylene expanded beads according to claim 6, further comprising:
and step S5, injecting the secondary expanded beads into a steam forming machine, heating by steam, and cooling to obtain an expanded bead forming body.
8. The method for preparing graphene oxide/polypropylene expanded beads according to claim 6, wherein the melting temperature in the step S1 is 160-180 ℃, and the melting time is 1-10 min.
9. The method for producing graphene oxide/polypropylene expanded beads according to claim 6, wherein the expansion ratio of the expanded beads in step S3 is 15 to 30 times.
10. The method for preparing graphene oxide/polypropylene expanded beads according to claim 6, wherein the pressure release rate of the autoclave in the step S3 is 0.3-2.0 MPa/S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010026392.4A CN111187474B (en) | 2020-01-10 | 2020-01-10 | Graphene oxide/polypropylene foamed bead and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010026392.4A CN111187474B (en) | 2020-01-10 | 2020-01-10 | Graphene oxide/polypropylene foamed bead and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111187474A true CN111187474A (en) | 2020-05-22 |
| CN111187474B CN111187474B (en) | 2022-05-13 |
Family
ID=70706133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010026392.4A Active CN111187474B (en) | 2020-01-10 | 2020-01-10 | Graphene oxide/polypropylene foamed bead and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111187474B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112175302A (en) * | 2020-09-07 | 2021-01-05 | 苏州市炽光新材料有限公司 | Antibacterial foamed polypropylene insulation box and preparation method thereof |
| CN112341662A (en) * | 2020-07-10 | 2021-02-09 | 无锡会通轻质材料股份有限公司 | Gray antistatic polypropylene composite foaming bead with skin-core structure and molded product thereof |
| US11591457B1 (en) * | 2022-03-30 | 2023-02-28 | Lyten, Inc. | Composite material including three-dimensional (3D) graphene and maleated copolymers |
| US11674031B1 (en) | 2022-03-30 | 2023-06-13 | Lyten, Inc. | Container formed of a composite material including three-dimensional (3D) graphene |
| US11813774B2 (en) | 2022-03-30 | 2023-11-14 | Lyten, Inc. | Method of producing a composite material including three-dimensional (3D) graphene |
| US12006388B2 (en) | 2022-03-30 | 2024-06-11 | Lyten, Inc. | Composite material including three-dimensional (3D) graphene |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888054A (en) * | 2011-07-21 | 2013-01-23 | 中国石油化工股份有限公司 | Antistatic polypropylene foam material and preparation method thereof |
| CN105273309A (en) * | 2015-10-26 | 2016-01-27 | 李修兵 | Anti-static and flame-retardant graphene-based polypropylene composite and preparation method thereof |
| US20160251506A1 (en) * | 2015-02-27 | 2016-09-01 | Hyundai Motor Company | Polypropylene-graphene composite and method for preparing the same |
| CN106633407A (en) * | 2016-12-30 | 2017-05-10 | 华东理工大学 | Preparation method for graphene microchip anti-static polypropylene |
| CN109705470A (en) * | 2019-01-16 | 2019-05-03 | 广西云亭烯技术有限公司 | A kind of preparation method of graphene EPP |
| CN110117393A (en) * | 2019-04-26 | 2019-08-13 | 集美大学 | A kind of graphene Masterbatch material and preparation method thereof with antistatic property |
-
2020
- 2020-01-10 CN CN202010026392.4A patent/CN111187474B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888054A (en) * | 2011-07-21 | 2013-01-23 | 中国石油化工股份有限公司 | Antistatic polypropylene foam material and preparation method thereof |
| US20160251506A1 (en) * | 2015-02-27 | 2016-09-01 | Hyundai Motor Company | Polypropylene-graphene composite and method for preparing the same |
| CN105924767A (en) * | 2015-02-27 | 2016-09-07 | 现代自动车株式会社 | Polypropylene-graphene Composite And Method For Preparing The Same |
| CN105273309A (en) * | 2015-10-26 | 2016-01-27 | 李修兵 | Anti-static and flame-retardant graphene-based polypropylene composite and preparation method thereof |
| CN106633407A (en) * | 2016-12-30 | 2017-05-10 | 华东理工大学 | Preparation method for graphene microchip anti-static polypropylene |
| CN109705470A (en) * | 2019-01-16 | 2019-05-03 | 广西云亭烯技术有限公司 | A kind of preparation method of graphene EPP |
| CN110117393A (en) * | 2019-04-26 | 2019-08-13 | 集美大学 | A kind of graphene Masterbatch material and preparation method thereof with antistatic property |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341662A (en) * | 2020-07-10 | 2021-02-09 | 无锡会通轻质材料股份有限公司 | Gray antistatic polypropylene composite foaming bead with skin-core structure and molded product thereof |
| CN112341662B (en) * | 2020-07-10 | 2022-03-11 | 无锡会通轻质材料股份有限公司 | Gray antistatic polypropylene composite foaming bead with skin-core structure and molded product thereof |
| CN112175302A (en) * | 2020-09-07 | 2021-01-05 | 苏州市炽光新材料有限公司 | Antibacterial foamed polypropylene insulation box and preparation method thereof |
| US11591457B1 (en) * | 2022-03-30 | 2023-02-28 | Lyten, Inc. | Composite material including three-dimensional (3D) graphene and maleated copolymers |
| US11674031B1 (en) | 2022-03-30 | 2023-06-13 | Lyten, Inc. | Container formed of a composite material including three-dimensional (3D) graphene |
| US11813774B2 (en) | 2022-03-30 | 2023-11-14 | Lyten, Inc. | Method of producing a composite material including three-dimensional (3D) graphene |
| US12006388B2 (en) | 2022-03-30 | 2024-06-11 | Lyten, Inc. | Composite material including three-dimensional (3D) graphene |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111187474B (en) | 2022-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111187474B (en) | Graphene oxide/polypropylene foamed bead and preparation method thereof | |
| CN101698728B (en) | Bright and injection-molding wood plastic composite and method for preparing the same | |
| CN105175924A (en) | Antistatic master batch, PC alloy with the same and preparing method of PC alloy | |
| CN110372817B (en) | Preparation method of nano metal oxide modified thermal expansion microspheres | |
| CN110054835B (en) | Preparation method of high-rate conductive polypropylene foamed beads | |
| CN107057194A (en) | A kind of CNT RPP micro-foaming material and preparation method thereof | |
| CN108164914A (en) | A kind of fretting map injection ABS composite material and preparation method thereof | |
| CN102796322A (en) | Talcum powder high-rigidity anti-static modified polypropylene material | |
| CN112831127A (en) | Expandable polypropylene particles, modified polypropylene expanded beads and preparation thereof | |
| CN110698806A (en) | Preparation method of recycled and regenerated plastic for 3D printing | |
| CN110229372A (en) | Low molding energy consumption polypropylene foamed particles of one kind and preparation method thereof | |
| CN108047581B (en) | High-strength graphite polystyrene board and preparation method thereof | |
| CN102604205B (en) | Novel environment-friendly composite reinforced polypropylene building template | |
| CN110128741B (en) | Polyolefin foam material and preparation method thereof | |
| CN111777817A (en) | Phase-change energy storage material and preparation method and application thereof | |
| CN111171750A (en) | Hot melt adhesive film for automotive interior ceiling and production method thereof | |
| CN109265825B (en) | Polypropylene or polypropylene compound foamed product and preparation method thereof | |
| CN114015185B (en) | Biodegradable heat-shrinkable film and processing technology thereof | |
| CN115678196A (en) | Polymer composite material toughened based on liquid metal and preparation method thereof | |
| CN111748154A (en) | High-performance reinforced polypropylene composite material | |
| CN112980080A (en) | High-temperature-resistant polyethylene and preparation method thereof | |
| CN111944293A (en) | Low-density foamed BMC material and preparation method thereof | |
| CN108495887B (en) | Liquid modifier as carrier system for CFA in expanded polystyrene | |
| CN107540938B (en) | Modified polypropylene reclaimed material and preparation method thereof | |
| CN110387079A (en) | A kind of halogen-free high flame-retardant polyethylene foam-material |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |