CN111961287A - Graphene impact-resistant bumper and preparation method thereof - Google Patents
Graphene impact-resistant bumper and preparation method thereof Download PDFInfo
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- CN111961287A CN111961287A CN202010917890.8A CN202010917890A CN111961287A CN 111961287 A CN111961287 A CN 111961287A CN 202010917890 A CN202010917890 A CN 202010917890A CN 111961287 A CN111961287 A CN 111961287A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 164
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 142
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229920003023 plastic Polymers 0.000 claims abstract description 106
- 239000004033 plastic Substances 0.000 claims abstract description 106
- 239000003607 modifier Substances 0.000 claims abstract description 26
- 239000011812 mixed powder Substances 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000005303 weighing Methods 0.000 claims abstract description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 33
- 239000000843 powder Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- 238000001746 injection moulding Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 14
- -1 polypropylene Polymers 0.000 claims description 9
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 238000004299 exfoliation Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 239000012948 isocyanate Substances 0.000 claims description 8
- 150000002513 isocyanates Chemical class 0.000 claims description 8
- 229920000570 polyether Polymers 0.000 claims description 8
- 239000002344 surface layer Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 6
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 6
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims description 5
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 claims description 5
- 239000007791 liquid phase Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 5
- 229920003051 synthetic elastomer Polymers 0.000 claims description 5
- 239000005061 synthetic rubber Substances 0.000 claims description 5
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 4
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 4
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- 229960003964 deoxycholic acid Drugs 0.000 claims description 4
- KXGVEGMKQFWNSR-LLQZFEROSA-N deoxycholic acid Chemical compound C([C@H]1CC2)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)[C@@H](O)C1 KXGVEGMKQFWNSR-LLQZFEROSA-N 0.000 claims description 4
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 4
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 4
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 4
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 3
- 229920013822 aminosilicone Polymers 0.000 claims 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010107 reaction injection moulding Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance 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
- 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
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- 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
-
- 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
The invention discloses a graphene impact-resistant bumper and a preparation method thereof, wherein the bumper comprises the following raw materials in percentage by mass: 60-90% of plastic slices, 0.1-15% of graphene, 0.1-1% of modifier and 5-30% of high-strength impact-resistant coating. The invention also discloses a preparation method of the graphene anti-impact bumper, which comprises the following steps: step 1, weighing raw materials in proportion; step 2, preparing graphene plastic mixed powder; step 3, preparing modified graphene plastic master batches; step 4, preparing a bumper blank; and 5, preparing the graphene high-strength impact-resistant automobile bumper. According to the graphene impact-resistant bumper and the preparation method thereof, the prepared bumper has the characteristics of reinforcement and impact resistance, and the high-strength impact-resistant coating is sprayed on the outer side of the bumper, so that the impact resistance of the automobile bumper can be greatly improved, and the life and property safety of passengers can be better protected.
Description
Technical Field
The invention relates to a composite material bumper and a preparation method thereof, and particularly relates to a graphene impact-resistant bumper and a preparation method thereof.
Background
Graphene is a single-layer carbon atom material stripped from graphite, and a single-layer two-dimensional honeycomb lattice structure is formed by tightly packing carbon atoms, and is known to be the material with the thinnest thickness, the hardest texture and the best conductivity. Graphene has excellent mechanical, optical and electrical properties and a very stable structure, researchers have not found that graphene has a missing carbon atom, the linkage between carbon atoms is very flexible, and is harder than diamond, the strength is 100 times higher than that of the world's best steel, if graphene is used for making a packaging bag, the graphene can bear about two tons of articles, the graphene is almost completely transparent, but is very compact, waterproof and airtight, helium gas with the minimum atomic size cannot pass through the graphene, the graphene has good conductivity, the movement speed of electrons in graphene reaches 1/300 of the light speed, the conductivity exceeds that of any traditional conductive material, the chemical properties are similar to the surface of graphite, various atoms and molecules can be adsorbed and desorbed, and the graphene also has the capability of resisting strong acid and strong alkali. Meanwhile, the graphene has an excellent antibacterial function, is applied to a purified PP melt-blown cotton bumper, can effectively avoid bacterial breeding, and prevents secondary pollution.
Disclosure of Invention
The invention aims to provide a composite material bumper and a preparation method thereof, wherein the bumper has the characteristics of reinforcement and impact resistance, and high-strength impact-resistant paint is sprayed on the outer side of the bumper, so that the impact resistance of the bumper is greatly improved.
In order to achieve the purpose, the invention provides a graphene impact-resistant bumper, wherein the bumper comprises the following raw materials in percentage by mass: 60-90% of plastic slices, 0.1-15% of graphene, 0.1-1% of modifier and 5-30% of high-strength impact-resistant coating.
The graphene impact-resistant bumper is prepared by any one of a mechanical stripping method, a liquid-phase stripping method, a chemical vapor deposition method and an oxidation-reduction method.
The graphene impact-resistant bumper comprises a modifier, wherein the modifier comprises one or more of polyvinyl alcohol, hydroxypropyl cellulose, polyethylene glycol, sodium lignosulfonate, polyvinylpyrrolidone, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, cetyl trimethyl ammonium bromide, sodium deoxycholate, aminosiloxane, octadecylamine and a silane coupling agent.
The graphene impact-resistant bumper is characterized in that the high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
The graphene impact-resistant bumper comprises any one or more of polypropylene, acrylonitrile-butadiene-styrene copolymer, polyurethane series, dimethylamino series and synthetic rubber series.
The invention also provides a preparation method of the graphene impact-resistant bumper, wherein the method comprises the following steps: step 1, weighing raw materials in proportion; step 2, preparing graphene plastic mixed powder; step 3, preparing modified graphene plastic master batches; step 4, preparing a bumper blank; and 5, preparing the graphene high-strength impact-resistant automobile bumper.
In the step 2, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled to be below 50ppm, then the plastic slices are ground to obtain plastic slice powder, the powder mesh is larger than 100 meshes, then the graphene powder and the modifier are added into the plastic slice powder and put into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
In the step 3, the graphene plastic mixed powder obtained in the step 2 is added into a double-screw extruder for extrusion and granulation, and the temperatures from the first zone to the sixth zone of the double-screw extruder are respectively controlled at 225 ℃, 220-.
In the step 4, the modified graphene plastic master batch obtained in the step 3 is dried, the drying temperature is controlled to be 80-200 ℃, the water content of the master batch is controlled to be less than 100ppm, and then the dried master batch is added into an injection molding machine for heating and melting, and a bumper blank is obtained through injection molding.
In the step 5, the high-strength impact-resistant coating is sprayed on the surface layer of the outer side of the bumper blank obtained in the step 4, so that the graphene high-strength impact-resistant automobile bumper is obtained.
The graphene impact-resistant bumper and the preparation method thereof provided by the invention have the following advantages:
the method preferentially prepares the graphene plastic master batch, then carries out RIM injection molding on the graphene master batch, and finally sprays the high-strength coating on the outer side of the bumper. The graphene impact-resistant bumper prepared by the method has the characteristics of reinforcement and impact resistance, and the high-strength impact-resistant coating is sprayed on the outer side of the bumper, so that the impact resistance of the automobile bumper can be greatly improved, and the life and property safety of passengers can be better protected.
The graphene impact-resistant bumper prepared by the method is simple in process, easy to operate, low in cost, high in economic benefit and suitable for large-scale industrial production.
Detailed Description
The following further describes embodiments of the present invention.
The graphene impact-resistant bumper provided by the invention comprises the following raw materials in percentage by mass: 60-90% of plastic slices or high polymer material slices, 0.1-15% of graphene, 0.1-1% of modifier and 5-30% of high-strength impact-resistant coating.
Preferably, the graphene is prepared by any one of a mechanical exfoliation method, a liquid phase exfoliation method, a chemical vapor deposition method, a redox method, and the like.
The modifier comprises one or more of polyvinyl alcohol, hydroxypropyl cellulose, polyethylene glycol, sodium lignin sulfonate, polyvinylpyrrolidone (PVP), sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, cetyl trimethyl ammonium bromide, sodium deoxycholate, aminosiloxane, octadecylamine, silane coupling agent, etc.
The high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
The plastic chip contains any one or more of polypropylene (PP), acrylonitrile-butadiene-styrene copolymer (ABS, i.e., styrene resin), polyurethane series, dimethylamino series, synthetic rubber series, and the like.
The invention also provides a preparation method of the graphene impact-resistant bumper, which comprises the following steps: step 1, weighing raw materials in proportion; step 2, preparing graphene plastic mixed powder; step 3, preparing modified graphene plastic master batches; step 4, preparing a bumper blank; and 5, preparing the graphene high-strength impact-resistant automobile bumper.
Preferably, in the step 2, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled below 50ppm after the plastic slices and the graphene are dried, then the plastic slices are ground to obtain plastic slice powder, the mesh number of the powder is larger than 100 meshes, the graphene powder and a modifier are added into the plastic slice powder and are put into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
And 3, adding the graphene plastic mixed powder obtained in the step 2 into a double-screw extruder for extrusion granulation, wherein the temperature from the first area to the sixth area of the double-screw extruder is respectively controlled at 225 ℃, 230 ℃, 235 ℃, 230 ℃, 240 ℃, 235 ℃ and 230 ℃ of 210-.
And 4, drying the modified graphene plastic master batch obtained in the step 3, controlling the drying temperature to be 80-200 ℃ and the water content of the master batch to be below 100ppm, adding the dried master batch into an injection molding machine, heating and melting, and performing injection molding to obtain a bumper blank. The Injection molding machine employs a rim (reaction Injection molding) Injection machine.
And 5, spraying high-strength impact-resistant coating on the outer surface layer of the bumper blank obtained in the step 4 by using special spraying equipment to obtain the graphene high-strength impact-resistant automobile bumper.
The various equipment employed in the process is known to those skilled in the art.
The graphene impact-resistant bumper and the preparation method thereof provided by the invention are further described below with reference to the examples.
Example 1
The graphene impact-resistant bumper comprises the following raw materials in percentage by mass: 60% of plastic slices, 15% of graphene, 1% of modifier and 24% of high-strength impact-resistant coating.
Preferably, the graphene is prepared by a mechanical exfoliation method.
The modifier comprises any one or more of polyvinyl alcohol, hydroxypropyl cellulose and polyethylene glycol.
The high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
The plastic slices comprise polypropylene.
The embodiment also provides a preparation method of the graphene impact-resistant bumper, which comprises the following steps:
step 1, weighing the raw materials in proportion.
And 2, preparing the graphene plastic mixed powder.
Preferably, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled to be below 50ppm after the plastic slices and the graphene are dried, then the plastic slices are ground to obtain plastic slice powder, the mesh number of the powder is larger than 100 meshes, the graphene powder and a modifier are added into the plastic slice powder and are placed into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
And 3, preparing the modified graphene plastic master batch.
And (3) adding the graphene plastic mixed powder obtained in the step (2) into a double-screw extruder for extrusion granulation, wherein the temperature from the first area to the sixth area of the double-screw extruder is respectively controlled at the temperature of 210-.
And 4, preparing a bumper blank.
And (3) drying the modified graphene plastic master batch obtained in the step (3), controlling the drying temperature to be 80-200 ℃ and the water content of the master batch to be below 100ppm, adding the dried master batch into an injection molding machine for heating and melting, and performing injection molding to obtain a bumper blank.
And 5, preparing the graphene high-strength impact-resistant automobile bumper.
And 4, spraying high-strength impact-resistant paint on the surface layer of the outer side of the bumper blank obtained in the step 4 to obtain the graphene high-strength impact-resistant automobile bumper.
Example 2
The graphene impact-resistant bumper comprises the following raw materials in percentage by mass: 90% of plastic slices, 0.1% of graphene, 0.1% of modifier and 9.8% of high-strength impact-resistant coating.
Preferably, the graphene is prepared by a liquid phase exfoliation method.
The modifier comprises sodium lignosulfonate or polyvinylpyrrolidone.
The high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
The plastic chips comprise acrylonitrile-butadiene-styrene copolymer.
The embodiment also provides a preparation method of the graphene impact-resistant bumper, which comprises the following steps:
step 1, weighing the raw materials in proportion.
And 2, preparing the graphene plastic mixed powder.
Preferably, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled to be below 50ppm after the plastic slices and the graphene are dried, then the plastic slices are ground to obtain plastic slice powder, the mesh number of the powder is larger than 100 meshes, the graphene powder and a modifier are added into the plastic slice powder and are placed into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
And 3, preparing the modified graphene plastic master batch.
And (3) adding the graphene plastic mixed powder obtained in the step (2) into a double-screw extruder for extrusion granulation, wherein the temperature from the first area to the sixth area of the double-screw extruder is respectively controlled at the temperature of 210-.
And 4, preparing a bumper blank.
And (3) drying the modified graphene plastic master batch obtained in the step (3), controlling the drying temperature to be 80-200 ℃ and the water content of the master batch to be below 100ppm, adding the dried master batch into an injection molding machine for heating and melting, and performing injection molding to obtain a bumper blank.
And 5, preparing the graphene high-strength impact-resistant automobile bumper.
And 4, spraying high-strength impact-resistant paint on the surface layer of the outer side of the bumper blank obtained in the step 4 to obtain the graphene high-strength impact-resistant automobile bumper.
Example 3
The graphene impact-resistant bumper comprises the following raw materials in percentage by mass: 66.5% of plastic slices, 3% of graphene, 0.5% of modifier and 30% of high-strength impact-resistant coating.
Preferably, the graphene is prepared by a chemical vapor deposition method.
The modifier comprises sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and hexadecyl trimethyl ammonium bromide.
The high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
The plastic chips comprise polyurethane series or dimethylamino series.
The embodiment also provides a preparation method of the graphene impact-resistant bumper, which comprises the following steps:
step 1, weighing the raw materials in proportion.
And 2, preparing the graphene plastic mixed powder.
Preferably, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled to be below 50ppm after the plastic slices and the graphene are dried, then the plastic slices are ground to obtain plastic slice powder, the mesh number of the powder is larger than 100 meshes, the graphene powder and a modifier are added into the plastic slice powder and are placed into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
And 3, preparing the modified graphene plastic master batch.
And (3) adding the graphene plastic mixed powder obtained in the step (2) into a double-screw extruder for extrusion granulation, wherein the temperature from the first area to the sixth area of the double-screw extruder is respectively controlled at the temperature of 210-.
And 4, preparing a bumper blank.
And (3) drying the modified graphene plastic master batch obtained in the step (3), controlling the drying temperature to be 80-200 ℃ and the water content of the master batch to be below 100ppm, adding the dried master batch into an injection molding machine for heating and melting, and performing injection molding to obtain a bumper blank.
And 5, preparing the graphene high-strength impact-resistant automobile bumper.
And 4, spraying high-strength impact-resistant paint on the surface layer of the outer side of the bumper blank obtained in the step 4 to obtain the graphene high-strength impact-resistant automobile bumper.
Example 4
The graphene impact-resistant bumper comprises the following raw materials in percentage by mass: 81.2% of plastic slices, 13% of graphene, 0.8% of modifier and 5% of high-strength impact-resistant coating.
Preferably, the graphene is prepared by a redox method.
The modifier comprises sodium deoxycholate and aminosiloxane.
The high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
The plastic chips comprise a synthetic rubber series.
The embodiment also provides a preparation method of the graphene impact-resistant bumper, which comprises the following steps:
step 1, weighing the raw materials in proportion.
And 2, preparing the graphene plastic mixed powder.
Preferably, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled to be below 50ppm after the plastic slices and the graphene are dried, then the plastic slices are ground to obtain plastic slice powder, the mesh number of the powder is larger than 100 meshes, the graphene powder and a modifier are added into the plastic slice powder and are placed into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
And 3, preparing the modified graphene plastic master batch.
And (3) adding the graphene plastic mixed powder obtained in the step (2) into a double-screw extruder for extrusion granulation, wherein the temperature from the first area to the sixth area of the double-screw extruder is respectively controlled at the temperature of 210-.
And 4, preparing a bumper blank.
And (3) drying the modified graphene plastic master batch obtained in the step (3), controlling the drying temperature to be 80-200 ℃ and the water content of the master batch to be below 100ppm, adding the dried master batch into an injection molding machine for heating and melting, and performing injection molding to obtain a bumper blank.
And 5, preparing the graphene high-strength impact-resistant automobile bumper.
And 4, spraying high-strength impact-resistant paint on the surface layer of the outer side of the bumper blank obtained in the step 4 to obtain the graphene high-strength impact-resistant automobile bumper.
Example 5
The graphene impact-resistant bumper comprises the following raw materials in percentage by mass: 74.7% of plastic slices, 10% of graphene, 0.3% of modifier and 15% of high-strength impact-resistant coating.
Preferably, the graphene is prepared by any one of a mechanical exfoliation method, a liquid phase exfoliation method, a chemical vapor deposition method, and a redox method.
The modifier comprises octadecylamine or a silane coupling agent.
The high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
The plastic chip contains any one or more of polypropylene, acrylonitrile-butadiene-styrene copolymer, polyurethane series, dimethylamino series and synthetic rubber series.
The embodiment also provides a preparation method of the graphene impact-resistant bumper, which comprises the following steps:
step 1, weighing the raw materials in proportion.
And 2, preparing the graphene plastic mixed powder.
Preferably, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled to be below 50ppm after the plastic slices and the graphene are dried, then the plastic slices are ground to obtain plastic slice powder, the mesh number of the powder is larger than 100 meshes, the graphene powder and a modifier are added into the plastic slice powder and are placed into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
And 3, preparing the modified graphene plastic master batch.
And (3) adding the graphene plastic mixed powder obtained in the step (2) into a double-screw extruder for extrusion granulation, wherein the temperature from the first area to the sixth area of the double-screw extruder is respectively controlled at the temperature of 210-.
And 4, preparing a bumper blank.
And (3) drying the modified graphene plastic master batch obtained in the step (3), controlling the drying temperature to be 80-200 ℃ and the water content of the master batch to be below 100ppm, adding the dried master batch into an injection molding machine for heating and melting, and performing injection molding to obtain a bumper blank.
And 5, preparing the graphene high-strength impact-resistant automobile bumper.
And 4, spraying high-strength impact-resistant paint on the surface layer of the outer side of the bumper blank obtained in the step 4 to obtain the graphene high-strength impact-resistant automobile bumper.
According to the graphene impact-resistant bumper and the preparation method thereof, the modified graphene master batch is preferentially prepared, then RIM injection molding is carried out on the dried master batch to prepare the graphene impact-resistant bumper, and finally the high-strength impact-resistant coating is sprayed. The invention aims to produce a modified graphene impact-resistant bumper by utilizing a modified graphene dispersion system and an automobile bumper preparation technology, the bumper has the characteristics of reinforcement and impact resistance, and high-strength impact-resistant paint is sprayed on the outer side of the bumper, so that the impact resistance of the bumper is greatly improved.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. The graphene impact-resistant bumper is characterized by comprising the following raw materials in percentage by mass: 60-90% of plastic slices, 0.1-15% of graphene, 0.1-1% of modifier and 5-30% of high-strength impact-resistant coating.
2. The graphene impact-resistant bumper according to claim 1, wherein the graphene is prepared by any one of a mechanical exfoliation method, a liquid phase exfoliation method, a chemical vapor deposition method, and a redox method.
3. The graphene impact-resistant bumper of claim 1, wherein the modifier comprises any one or more of polyvinyl alcohol, hydroxypropyl cellulose, polyethylene glycol, sodium lignosulfonate, polyvinyl pyrrolidone, sodium dodecylbenzenesulfonate, sodium lauryl sulfate, cetyltrimethylammonium bromide, sodium deoxycholate, aminosilicone, octadecylamine, and silane coupling agents.
4. The graphene impact-resistant bumper according to claim 1, wherein the high-strength impact-resistant coating is formed by mixing isocyanate and amino-terminated polyether in any proportion.
5. The graphene impact-resistant bumper according to claim 1, wherein the plastic slices comprise any one or more of polypropylene, acrylonitrile-butadiene-styrene copolymer, polyurethane series, dimethylamino series, and synthetic rubber series.
6. A preparation method of the graphene impact-resistant bumper as claimed in any one of claims 1 to 5, wherein the method comprises the following steps:
step 1, weighing raw materials in proportion;
step 2, preparing graphene plastic mixed powder;
step 3, preparing modified graphene plastic master batches;
step 4, preparing a bumper blank;
and 5, preparing the graphene high-strength impact-resistant automobile bumper.
7. The preparation method of the graphene impact-resistant bumper as claimed in claim 6, wherein in the step 2, the plastic slices and the graphene are respectively dried, the water content of the plastic slices and the graphene is controlled to be less than 50ppm after the plastic slices and the graphene are dried, then the plastic slices are ground to obtain plastic slice powder, the powder mesh number is larger than 100 meshes, then the graphene powder and the modifier are added into the plastic slice powder and are placed into a high-speed mixer for mixing and stirring, the mixing and stirring speed is 3000-10000 r/min, and the stirring time is 10-30 min, so that the graphene plastic mixed powder is obtained.
8. The method for preparing a graphene impact-resistant bumper as claimed in claim 6, wherein in the step 3, the graphene plastic mixed powder obtained in the step 2 is added into a twin-screw extruder for extrusion granulation, and the temperatures from the first zone to the sixth zone of the twin-screw extruder are respectively controlled at the temperature of 210-.
9. The method for preparing a graphene impact-resistant bumper according to claim 6, wherein in the step 4, the modified graphene plastic master batch obtained in the step 3 is dried, the drying temperature is controlled to be 80-200 ℃, the water content of the master batch is controlled to be less than 100ppm, and then the dried master batch is added into an injection molding machine to be heated and melted, and then a bumper blank is obtained through injection molding.
10. The preparation method of the graphene impact-resistant bumper as claimed in claim 6, wherein in the step 5, a high-strength impact-resistant coating is sprayed on the outer surface layer of the bumper blank obtained in the step 4, so as to obtain the graphene high-strength impact-resistant automobile bumper.
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