CN114933881A - Graphene-toughened epoxy resin-acrylate rubber-based adhesive and preparation method thereof - Google Patents
Graphene-toughened epoxy resin-acrylate rubber-based adhesive and preparation method thereof Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 53
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 40
- 239000000853 adhesive Substances 0.000 title claims abstract description 39
- 239000004593 Epoxy Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003822 epoxy resin Substances 0.000 claims abstract description 44
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 44
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 42
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 38
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 20
- 238000003760 magnetic stirring Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000006185 dispersion Substances 0.000 claims description 12
- 238000001291 vacuum drying Methods 0.000 claims description 11
- -1 glycidyl ester Chemical class 0.000 claims description 7
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 7
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 claims description 6
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010907 mechanical stirring Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 claims description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 5
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 5
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 4
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 4
- 229920005604 random copolymer Polymers 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 2
- 230000032798 delamination Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 229910021382 natural graphite Inorganic materials 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LCFVJGUPQDGYKZ-UHFFFAOYSA-N Bisphenol A diglycidyl ether Chemical compound C=1C=C(OCC2OC2)C=CC=1C(C)(C)C(C=C1)=CC=C1OCC1CO1 LCFVJGUPQDGYKZ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000004826 Synthetic adhesive Substances 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000007656 fracture toughness test Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920013657 polymer matrix composite Polymers 0.000 description 1
- 239000011160 polymer matrix composite Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/18—Homopolymers or copolymers of nitriles
- C09J133/20—Homopolymers or copolymers of acrylonitrile
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a graphene toughened epoxy resin-acrylate rubber-based adhesive and a preparation method thereof, wherein the graphene toughened epoxy resin-acrylate rubber-based adhesive comprises the following raw materials in parts by weight: 50-100 parts of epoxy resin, 50-100 parts of acrylate rubber, 5-7.5 parts of curing agent and 1-5 parts of graphene, wherein the graphene is dispersed in an acetone solvent by ultrasonic waves, then the epoxy resin, the acrylate rubber and the curing agent are added according to a proportion, and after magnetic stirring is carried out, the solvent is removed, so that a finished product is obtained. The adhesive prepared by the invention adopts a compounded toughening system, well solves the problem of insufficient toughness of the epoxy resin by utilizing the microstructure morphology of the graphene and the acrylate rubber and effectively reduces thermal expansion; debonding/delamination and pull-out of graphene effectively improves interfacial bond strength.
Description
Technical Field
The invention belongs to the technical field of adhesives, and particularly relates to a graphene toughened epoxy resin/acrylate rubber-based adhesive and a preparation method thereof.
Background
The adhesive is a polymer matrix composite material which can bond workpieces through surface adhesion and form a high-shear strength lap joint structure. At present, the varieties of the adhesives at home and abroad have more than 5000 brands, and the synthetic adhesives are rapidly developed along with the increase of various performance requirements of the market.
Epoxy resin is a thermosetting binder, and has strong adhesion, stability and corrosion resistance. However, since the crosslinked cured epoxy resin material is hard and brittle and has poor impact resistance and peeling resistance, it is desired to toughen an epoxy resin adhesive material while effectively controlling its adhesive properties, heat resistance, mechanical properties, and the like.
The acrylate rubber is a flexible macromolecule, has strong molecular polarity, and has excellent oil resistance, mechanical property and thermal oxidation resistance. In the cross-linking and curing process of blending the epoxy resin and the acrylate rubber, along with the increase of the molecular weight of the components, the compatibility of the two components is poor and phase separation occurs. Researches show that the morphology of the microstructure can influence the mechanical and toughening properties of the modified material. The high-performance epoxy resin modified material is prepared by controlling the microscopic morphology of the material. However, the strength and toughening effect of the adhesive are poor, and the application of the adhesive is limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a graphene toughened epoxy resin-acrylate rubber-based adhesive and a preparation method thereof.
The technical purpose of the invention is realized by the following technical scheme.
The raw material formula of the adhesive consists of 50-100 parts by weight of epoxy resin, 50-100 parts by weight of acrylate rubber, 5-7.5 parts by weight of curing agent and 1-5 parts by weight of graphene, and the adhesive is prepared according to the following steps: firstly, uniformly dispersing graphene in a solvent, then sequentially adding epoxy resin, acrylate rubber and a curing agent and uniformly dispersing to obtain a dispersion liquid, and then carrying out vacuum drying on the dispersion liquid to remove the solvent, wherein mechanical stirring, magnetic stirring or ultrasonic dispersion is adopted to realize uniform dispersion for 20-60 min.
The raw material formula preferably comprises 50-80 parts by weight of epoxy resin, 60-80 parts by weight of acrylate rubber, 5-7 parts by weight of curing agent and 3-5 parts by weight of graphene.
The epoxy resin is bisphenol A epoxy resin or glycidyl ester epoxy resin.
The acrylate rubber is a random copolymer consisting of acrylonitrile, butyl acrylate, ethyl acrylate and glycidyl methacrylate.
The curing agent is one of 4, 4-diaminodiphenylmethane or hexahydropiperidine.
The solvent is one of acetone, tetrahydrofuran, formamide or acetamide.
The vacuum drying time is 8-12 hours.
Mechanical stirring, magnetic stirring or ultrasonic dispersion is adopted to realize uniform dispersion for 30-50 min.
The adhesive prepared by the invention adopts a compounded toughening system, well solves the problem of insufficient toughness of the epoxy resin by utilizing the microstructure morphology of the graphene and the acrylate rubber, and effectively reduces thermal expansion; debonding/delamination and pull-out of graphene sheets effectively improves interfacial bond strength. According to the technical scheme, the principle of debonding/delaminating and pulling out of the graphene sheet is utilized, the advantages of the graphene and the acrylate rubber are utilized, the fracture toughness of the polymer is effectively improved, the problem of insufficient toughness of the epoxy resin is solved, the adhesive has excellent mechanical properties while being rapidly cured, and the adhesive is expected to be applied to the field of oral cavity models.
Drawings
Fig. 1 is a TEM photograph of graphene obtained by peeling natural graphite powder by Hummers method in an example of the present invention.
FIG. 2 is a schematic diagram of the structure of the adhesive obtained in the embodiment of the present invention adhering to a copper sheet.
Detailed Description
The technical solution of the present invention will be further described with reference to the following specific examples. The basic description of the drugs used in the examples is as follows:
(1) bisphenol a type (DGEBA, Ev ═ 0.51): analytically pure Shanghai resin Limited liability company with the structural formula shown in the specification
(2) Acrylate rubber (ACM, Tg 38 ℃, Mw 3.5 × 105 g/mol): analytically pure, random copolymer of Acrylonitrile (AN), butyl acrylate (EA), ethyl acrylate (BA) and glycidyl methacrylate, having the structure shown in the following formula
(3) Curing agent 4, 4' -diaminodiphenylmethane (DDM): analytically pure, Shanghai resin Co., Ltd, the structural formula is shown below
(4) Graphene is self-made, as shown in fig. 1, has a graphene sheet structure, and is obtained by peeling natural graphite powder by Hummers method, for example, as follows: natural graphite powder was added to 230mL of high concentration H2SO4(98 wt%) at 0 deg.C, potassium permanganate was added slowly with constant stirring. The mixture was then heated to 35 ℃ and stirred for 30min, deionized water was slowly added, and heated to 90 ℃ and stirred for 15min, followed by the addition of deionized water and hydrogen peroxide (30 wt%). The mixture was filtered with suction and washed with aqueous hydrochloric acid (5 wt%), and the sulfate ions were detected by adding BaCl2 and washed well. Finally, the filtrate is placed in a vacuum drying oven and heated at 60 ℃ for drying to obtain brown powder, and then the powder is placed in a muffle furnace and heated at 700 ℃ for 30 seconds to obtain the required graphene (sheet).
In the examples of the preparation described below, acetone was chosen as solvent, ultrasonic dispersion and magnetic stirring were chosen, the ultrasonic power was 500w and the magnetic stirring speed was 200 revolutions per minute, each portion being 0.1 g.
Example 1
(1) Taking materials: weighing 50 parts of epoxy resin, 50 parts of acrylate rubber, 5 parts of curing agent and 1 part of natural graphite powder;
(2) preparation of graphene toughened epoxy resin/acrylate rubber-based adhesive sample: firstly, dispersing graphene sheets in an acetone solvent by ultrasound, then adding epoxy resin, acrylate rubber and a curing agent according to a proportion, stirring continuously for 20min by using magnetic stirring to obtain an acetone solution of epoxy resin/acrylate rubber with uniformly dispersed graphene, slowly pouring the dissolved solution into a polytetrafluoroethylene mold, and vacuumizing in a vacuum drying oven for 8h at room temperature to remove the solvent to obtain a finished product.
Example 2
(1) Taking materials: weighing 100 parts of epoxy resin, 50 parts of acrylate rubber, 7.5 parts of curing agent and 1 part of natural graphite powder;
(2) preparing a graphene toughened epoxy resin/acrylate rubber-based adhesive sample: firstly, dispersing graphene sheets in an acetone solvent by ultrasound, then adding epoxy resin, acrylate rubber and a curing agent according to a proportion, and stirring continuously for 30min by using magnetic stirring to obtain an acetone solution of the epoxy resin/acrylate rubber with uniformly dispersed graphene. Slowly pouring the dissolved solution into a polytetrafluoroethylene mold, and vacuumizing for 10 hours in a vacuum drying oven at room temperature to remove the solvent to obtain a finished product.
Example 3
(1) Taking materials: weighing 50 parts of epoxy resin, 100 parts of acrylate rubber, 7.5 parts of curing agent and 1 part of natural graphite powder;
(2) preparing a graphene toughened epoxy resin/acrylate rubber-based adhesive sample: firstly, dispersing graphene sheets in an acetone solvent by ultrasound, then adding epoxy resin, acrylate rubber and a curing agent according to a proportion, and stirring continuously for 50min by using magnetic stirring to obtain an acetone solution of the epoxy resin/acrylate rubber with uniformly dispersed graphene. Slowly pouring the dissolved solution into a polytetrafluoroethylene mold, and vacuumizing in a vacuum drying oven for 12 hours at room temperature to remove the solvent to obtain a finished product.
Example 4
(1) Taking materials: weighing 50 parts of epoxy resin, 50 parts of acrylate rubber, 5 parts of curing agent and 5 parts of natural graphite powder;
(2) preparation of graphene toughened epoxy resin/acrylate rubber-based adhesive sample: firstly, graphene sheets are dispersed in an acetone solvent by ultrasonic waves, then epoxy resin, acrylate rubber and a curing agent are added according to the proportion, and the mixture is stirred continuously for 40min by magnetic stirring to obtain an acetone solution of the epoxy resin/acrylate rubber with uniformly dispersed graphene. Slowly pouring the dissolved solution into a polytetrafluoroethylene mold, and vacuumizing in a vacuum drying oven for 12h at room temperature to remove the solvent to obtain a finished product.
Preparing a tensile adhesion test sample, coating one end of a copper sheet with the prepared finished product (adhesive), covering another copper sheet on a coating area, clamping the two copper sheets by using a clamp, and heating the copper sheets in a vacuum oven for 5-10min at 50-60 ℃ to prepare the tensile adhesion test sample. As shown in fig. 2, the hatched area is the area coated with the adhesive, a is the thickness (1mm) of the copper sheet, b is the length (60mm) of the copper sheet, c is the width (20mm) of the copper sheet, and d is the length (20mm) of the hatched area. Adhesion strength test method: universal tester (mitre bar, UTM2), test conditions: the size of the adhering area is 20X 0.01mm, and the deformation speed is 2mm min -1 The mechanical sensor is 2 kN. Fracture toughness test method: universal testing machine (Sansi crossbar, UTM2) was obtained from a single edge notched bend specimen test, according to ASTM D5045-99. The force loading rate during the test was 1.0 mm/min. The sample size was 6mm × 12mm × 48 mm. The fracture toughness can be calculated by the formula:
where F is the applied load and F (x/W) is a constant calculated by crack length.
| Example one | Example two | Example three | Example four | |
| Adhesion force N | 678 | 643 | 510 | 716 |
| Fracture toughness MPa m 1/2 | 1.496 | 1.372 | 1.394 | 1.743 |
The preparation method disclosed by the invention utilizes the advantages of the graphene and the acrylate rubber, effectively improves the fracture toughness of the polymer, solves the problem of insufficient toughness of the epoxy resin, enables the adhesive to be rapidly cured and simultaneously to have excellent mechanical properties, and is expected to be applied to the field of oral cavity models.
The preparation of the adhesive can be realized by adjusting the process parameters according to the content of the invention, and the adhesive shows the performance basically consistent with the invention through tests. The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. The graphene-toughened epoxy resin-acrylate rubber-based adhesive is characterized by comprising 50-100 parts by weight of epoxy resin, 50-100 parts by weight of acrylate rubber, 5-7.5 parts by weight of curing agent and 1-5 parts by weight of graphene, and is prepared according to the following steps: firstly, uniformly dispersing graphene in a solvent, then sequentially adding epoxy resin, acrylate rubber and a curing agent and uniformly dispersing to obtain a dispersion liquid, and then carrying out vacuum drying on the dispersion liquid to remove the solvent, wherein mechanical stirring, magnetic stirring or ultrasonic dispersion is adopted to realize uniform dispersion for 20-60 min.
2. The graphene toughened epoxy resin-acrylate rubber-based adhesive as claimed in claim 1, wherein the raw material formula comprises 50-80 parts by weight of epoxy resin, 60-80 parts by weight of acrylate rubber, 5-7 parts by weight of curing agent and 3-5 parts by weight of graphene.
3. The graphene-toughened epoxy resin-acrylate rubber-based adhesive according to claim 1 or 2, wherein the epoxy resin is one of a bisphenol a-based epoxy resin or a glycidyl ester-based epoxy resin; the acrylate rubber is a random copolymer consisting of acrylonitrile, butyl acrylate, ethyl acrylate and glycidyl methacrylate; the curing agent is one of 4, 4-diaminodiphenylmethane or hexahydropiperidine; the solvent is one of acetone, tetrahydrofuran, formamide or acetamide.
4. The graphene-toughened epoxy resin-acrylate rubber-based adhesive as claimed in claim 1 or 2, wherein the vacuum drying time is 8-12 hours.
5. The graphene-toughened epoxy resin-acrylate rubber-based adhesive as claimed in claim 1 or 2, wherein the uniform dispersion is achieved by mechanical stirring, magnetic stirring or ultrasonic dispersion for 30-50 min.
6. The preparation method of the graphene toughened epoxy resin-acrylate rubber-based adhesive is characterized in that a raw material formula comprises 50-100 parts by weight of epoxy resin, 50-100 parts by weight of acrylate rubber, 5-7.5 parts by weight of curing agent and 1-5 parts by weight of graphene, and the adhesive is prepared according to the following steps: firstly, uniformly dispersing graphene in a solvent, then sequentially adding epoxy resin, acrylate rubber and a curing agent and uniformly dispersing to obtain a dispersion liquid, and then carrying out vacuum drying on the dispersion liquid to remove the solvent, wherein mechanical stirring, magnetic stirring or ultrasonic dispersion is adopted to realize uniform dispersion for 20-60 min.
7. The preparation method of the graphene toughened epoxy resin-acrylate rubber-based adhesive as claimed in claim 6, wherein the raw material formula comprises 50-80 parts by weight of epoxy resin, 60-80 parts by weight of acrylate rubber, 5-7 parts by weight of curing agent and 3-5 parts by weight of graphene.
8. The method for preparing the graphene-toughened epoxy resin-acrylate rubber-based adhesive according to claim 6, wherein the epoxy resin is one of bisphenol A epoxy resin or glycidyl ester epoxy resin; the acrylate rubber is a random copolymer consisting of acrylonitrile, butyl acrylate, ethyl acrylate and glycidyl methacrylate; the curing agent is one of 4, 4-diaminodiphenylmethane or hexahydropiperidine; the solvent is one of acetone, tetrahydrofuran, formamide or acetamide.
9. The preparation method of the graphene-toughened epoxy resin-acrylate rubber-based adhesive according to claim 6, wherein the vacuum drying time is 8-12 hours.
10. The preparation method of the graphene toughened epoxy resin-acrylate rubber-based adhesive according to claim 6, wherein the uniform dispersion is achieved by mechanical stirring, magnetic stirring or ultrasonic dispersion for 30-50 min.
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