CN114561171A - High-strength binder containing mesoporous silica nanoparticles - Google Patents
High-strength binder containing mesoporous silica nanoparticles Download PDFInfo
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- CN114561171A CN114561171A CN202210286403.1A CN202210286403A CN114561171A CN 114561171 A CN114561171 A CN 114561171A CN 202210286403 A CN202210286403 A CN 202210286403A CN 114561171 A CN114561171 A CN 114561171A
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- mesoporous silica
- silica nanoparticles
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- strength binder
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 67
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 64
- 239000011230 binding agent Substances 0.000 title claims description 28
- 230000001070 adhesive effect Effects 0.000 claims abstract description 24
- 239000000853 adhesive Substances 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 5
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 5
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 229960003638 dopamine Drugs 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000002562 thickening agent Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 6
- 239000005056 polyisocyanate Substances 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 239000003623 enhancer Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 239000012986 chain transfer agent Substances 0.000 claims description 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- 229920001225 polyester resin Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 229920001690 polydopamine Polymers 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract description 7
- 230000004001 molecular interaction Effects 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000237536 Mytilus edulis Species 0.000 description 3
- 235000020638 mussel Nutrition 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- HPILSDOMLLYBQF-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical compound C1OC1COC(CCC)OCC1CO1 HPILSDOMLLYBQF-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- 241000288673 Chiroptera Species 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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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
- 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
- C09J133/04—Homopolymers or copolymers of esters
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- 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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a high-strength adhesive containing mesoporous silica nanoparticles, which is mainly prepared by mixing a skeleton polymer, mesoporous silica nanoparticles, an adhesive reinforcing agent and an auxiliary agent in proportion. Based on the synergistic effect of cohesion and adhesion performance, the invention provides a high-strength adhesive formed by embedding a skeleton polymer/polydopamine and mesoporous silica nanoparticles. The introduction of mesoporous silica nanoparticles may enhance strength and adhesion to different substrate surfaces due to increased cohesion resulting from molecular interactions between the mesoporous silica nanoparticles and the polymer chains. Due to the adhesive effect of the mesoporous silica nanoparticles on the interface, the application of the mesoporous silica nanoparticles to the polymer-bonded substrate interface can further enhance the adhesive strength.
Description
Technical Field
The invention relates to the technical field of binders, and particularly relates to a high-strength binder containing mesoporous silica nanoparticles.
Background
Bonding is a process of firmly joining together materials of the same or different kinds by means of substances having adhesive ability. Substances with adhesive capacity are called adhesives. The bonding process is a complex physical and chemical process. The quality of the adhesive property depends not only on the structure and state of the adhesive and the surface of the adherend, but also is closely related to the process conditions of the adhesion process.
The generation of adhesion tends to occur only on the basis of a few molecular contacts. It is necessary to maximize the density of molecular contacts at the interface region during the bonding process. The two surfaces of the objects to be glued are glued, and the necessary condition is that the adhesive and the surfaces of the objects to be glued are tightly combined together, namely, the surfaces of the objects can be fully infiltrated by the adhesive, and enough glue force is formed, so that the satisfactory joint strength can be obtained. After the surface of the object to be glued is glued, the adhesive can flow, infiltrate, diffuse and permeate, and when the distance is less than 5 multiplied by 10-10m, the glued object generates physical and chemical bonding force on the interface.
The mesoporous silica nano particles (MSNs) have a regular porous structure, the pore channels are uniformly distributed and are mutually independent, and the specific surface area is larger than 900m2Per g) and pore volume (> 0.9 cm)3The pore size can be regulated and controlled within a range from a few nanometers to tens of nanometers, so that the porous material has wide application prospects in the fields of adsorption separation, catalytic reaction, chromatography, biomedicine and the like. Since the discovery in the end of the 20 th century 70 s, mesoporous silica has attracted much attention. This is mainly due to their unique properties, such as ordered pore structure, very high specific surface area and their possible synthesis in various forms, such as bats, discs, powders, etc. Unlike conventional porous silica, mesoporous silica exhibits exceptionally ordered pores. MSs with large surface areas and uniform and tailorable hole sizes are currently being used in many applications.
The marine organism mussel can be firmly adhered to the surfaces of various materials in humid environments such as seawater and the like through protein with super-strong adhesion performance secreted by foot glands of the marine organism mussel. Inspired by the adhesion protein, research finds that Polydopamine (PDA) has a structure similar to that of mussel adhesion protein and super-strong adhesion performance. Under alkaline conditions, PDA can quickly form a film on the surface of various materials, wherein the PDA contains a large number of hydrophilic hydroxyl and amino functional groups, so that the hydrophilicity and chemical versatility of the surface of the material can be improved; PDA can be used as an intermediate layer to strongly bond functional molecules on the surface of a substrate material. PDA is frequently used for surface modification of materials in recent years because its formation process is simple and does not require an organic solvent.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a high-strength adhesive containing mesoporous silica nanoparticles, and provides the high-strength adhesive composed of a skeleton polymer/polydopamine and mesoporous silica nanoparticles embedded based on the synergistic effect of cohesion and adhesion performance.
The technical scheme adopted by the invention for solving the technical problem is as follows: the high-strength adhesive containing the mesoporous silica nanoparticles is mainly prepared by mixing a skeleton polymer, the mesoporous silica nanoparticles, an adhesive reinforcing agent and an auxiliary agent in proportion.
Further, the skeleton polymer is one or a combination of more of polyacrylic acid, polyurethane, epoxy resin, polyester resin, silicon rubber and polyvinyl alcohol; the form of the backbone polymer includes a liquid, solid, solution, dispersion or emulsion state.
Furthermore, the mesoporous silica nanoparticles have a regular porous structure, the pore channels are uniformly distributed and are independent from each other, and the specific surface area and the pore volume are high; the amount of the mesoporous silica nanoparticles is 1-10 wt% of the amount of the skeleton polymer.
Furthermore, the specific surface area of the mesoporous silica nano-particles is more than 900m2G, pore volume > 0.9cm3/g。
Further, the preparation method of the mesoporous silica nanoparticle comprises the following steps:
s1, weighing a certain amount of template agent, adding deionized water, stirring and dissolving at 60 +/-5 ℃, sequentially adding ethylene glycol and triethylamine, mixing uniformly, slowly adding ethyl orthosilicate, and changing the solution from clear to milky white;
s2, continuously reacting at 60 +/-5 ℃ for 1-3 h, centrifuging the product, and washing the product to be neutral by using deionized water and ethanol to obtain tetraethoxysilane mesoporous silica nanoparticles;
s3, transferring the product into an acidic ethanol solution, heating and refluxing, removing the template agent, centrifugally purifying, washing with deionized water to neutrality, and drying in vacuum to obtain the mesoporous silica nano particles.
Further, in step S1, the template agent is a chain transfer agent, such as cetyl trimethyl ammonium bromide or nano iron oxide particles.
Further, adding a silane coupling agent to the mesoporous silica nanoparticles prepared in step S3 to perform surface modification on the mesoporous silica nanoparticles; the dosage of the silane coupling agent is 1-5% of the mass of the mesoporous silica nano particles.
Further, the adhesion enhancer is one or a mixture of two of dopamine and a silane coupling agent, and the amount of the adhesion enhancer is 1-10 wt% of that of the skeleton polymer.
Further, the auxiliary agent comprises a curing agent, a leveling agent, a defoaming agent and a thickening agent.
Still further, the curing agent is at least one of polyisocyanate and glycidyl ether, and the amount of the curing agent is 0.1-5 wt% of the amount of the skeleton polymer.
The invention has the beneficial effects that: compared with the prior art, the high-strength binder containing the mesoporous silica nanoparticles provided by the invention has the following advantages:
1) the adhesive prepared by embedding mesoporous silica nanoparticles into a skeleton polymer can enhance the adhesion because the cohesion caused by the molecular interaction between the mesoporous silica nanoparticles and the polymer chain is enhanced.
2) The introduction of the mesoporous silica nanoparticles can enhance the adhesive strength of different substrate surfaces, and the application of the mesoporous silica nanoparticles to the polymer-bonded substrate interface can further enhance the adhesive strength due to the adhesive effect of the mesoporous silica nanoparticles on the interface.
3) The addition of the bonding reinforcing agent dopamine further increases the action sites between the mesoporous silica nanoparticles and the skeleton polymer, so that the adhesive force of the bonding agent is further enhanced, and the bonding agent with high peel strength is obtained and is suitable for surface bonding of different base materials.
Detailed Description
The invention is further illustrated by the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
Preparation of mesoporous silica nanoparticles:
s1, weighing 5g of hexadecyl trimethyl ammonium bromide, adding 200mL of deionized water, stirring and dissolving at 60 ℃, sequentially adding 200mL of ethylene glycol and 40mL of triethylamine, uniformly mixing, slowly adding 30mL of ethyl orthosilicate, and changing the solution from clear to milky white.
And S2, continuously reacting for 2h at 60 ℃, centrifuging the product, and washing the product to be neutral by using deionized water and ethanol to obtain the tetraethoxysilane mesoporous silica nano particles.
S3, transferring the product into an acidic ethanol solution, heating and refluxing, removing the template agent, centrifugally purifying, washing with deionized water to neutrality, and drying in vacuum to obtain the mesoporous silica nano particles.
Example 2
Preparation of mesoporous silica nanoparticles:
the mesoporous silica nanoparticles prepared in example 1 were modified with a silane coupling agent. Carrying out surface modification on the mesoporous silica nanoparticles by 1g of 3-aminopropyltrimethoxysilane, heating and reacting for 1h, washing the mesoporous silica nanoparticles to be neutral by using deionized water, and drying the mesoporous silica nanoparticles in vacuum to obtain the modified mesoporous silica nanoparticles.
Example 3
Adding 1g of dopamine and 1g of mesoporous silica nanoparticles synthesized in the embodiment 1 into 100g of polyacrylate emulsion, homogenizing for 10 minutes, uniformly mixing, dropwise adding a sodium hydroxide solution to adjust the pH value to about 10, and stirring for reacting for 1 hour to polymerize the dopamine. Adding 0.5g of butanediol diglycidyl ether serving as a curing agent and sodium carboxymethyl cellulose serving as a thickening agent, uniformly mixing to obtain a water-based binder, and coating the water-based binder on different substrates to perform a bond strength test. The results are shown in Table 1.
Example 4
Adding 10g of dopamine and 2g of mesoporous silica nanoparticles synthesized in the embodiment 1 into 100g of polyurethane emulsion, homogenizing for 10 minutes, uniformly mixing, dropwise adding a sodium hydroxide solution to adjust the pH value to about 10, and stirring for reacting for 1 hour to polymerize the dopamine. Adding 2g of polyisocyanate curing agent XP 2759 and thickening agent crosslinked sodium polyacrylate, uniformly mixing to obtain the binder, and coating the binder on different base materials for carrying out bonding strength test. The results are shown in Table 1.
Example 5
5g of dopamine and 1g of the mesoporous silica nanoparticles synthesized in example 2 were added to 100g of epoxy resin, and the mixture was homogenized for 10 minutes, mixed uniformly, and stirred to react for 1 hour, thereby polymerizing dopamine. Adding 2g of ethylene glycol diglycidyl ether, uniformly mixing to obtain a binder, and coating the binder on different substrates for carrying out a bond strength test. The results are shown in Table 1.
Example 6
Adding 10g of dopamine and 2g of mesoporous silica nanoparticles synthesized in the embodiment 2 into 100g of polyurethane emulsion, homogenizing for 10 minutes, uniformly mixing, dropwise adding a sodium hydroxide solution to adjust the pH value to about 10, and stirring for reacting for 1 hour to polymerize the dopamine. Adding 2g of polyisocyanate curing agent XP 2759 and thickening agent crosslinked sodium polyacrylate, uniformly mixing to obtain the binder, and coating the binder on different base materials for carrying out bonding strength test. The results are shown in Table 1.
Comparative example 1
Adding 10g of dopamine into 100g of polyurethane emulsion, homogenizing for 10 minutes, uniformly mixing, dropwise adding a sodium hydroxide solution to adjust the pH value to about 10, and stirring for reacting for 1 hour to polymerize the dopamine. Adding 2g of polyisocyanate curing agent XP 2759 and thickening agent crosslinked sodium polyacrylate, uniformly mixing to obtain the binder, and coating the binder on different base materials for carrying out bonding strength test. The results are shown in Table 1.
Comparative example 2
Adding 2g of polyisocyanate curing agent XP 2759 and thickening agent cross-linked sodium polyacrylate into 100g of polyurethane emulsion, uniformly mixing to obtain a binder, and coating the binder on different base materials for carrying out bonding strength tests. The results are shown in Table 1.
TABLE 1
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (10)
1. A high-strength binder containing mesoporous silica nanoparticles is characterized in that: the high-strength binder is mainly prepared by mixing a skeleton polymer, mesoporous silica nanoparticles, a binding enhancer and an auxiliary agent in proportion.
2. The high strength binder containing mesoporous silica nanoparticles according to claim 1, wherein: the skeleton polymer is one or a combination of more of polyacrylic acid, polyurethane, epoxy resin, polyester resin, silicon rubber and polyvinyl alcohol; the form of the backbone polymer includes a liquid, solid, solution, dispersion or emulsion state.
3. The high strength binder containing mesoporous silica nanoparticles according to claim 1, wherein: the mesoporous silica nano particles have a regular porous structure, the pore channels are uniformly distributed and are mutually independent, and the specific surface area and the pore volume are high; the amount of the mesoporous silica nanoparticles is 1-10 wt% of the amount of the skeleton polymer.
4. The high-strength binder containing mesoporous silica nanoparticles according to claim 1 or 3, wherein: the specific surface area of the mesoporous silica nano particles is more than 900m2G, pore volume > 0.9cm3/g。
5. The high-strength binder containing mesoporous silica nanoparticles according to claim 1 or 3, wherein the mesoporous silica nanoparticles are prepared by the following method:
s1, weighing a certain amount of template agent, adding deionized water, stirring and dissolving at 60 +/-5 ℃, sequentially adding ethylene glycol and triethylamine, mixing uniformly, slowly adding ethyl orthosilicate, and changing the solution from clear to milky white;
s2, continuously reacting at 60 +/-5 ℃ for 1-3 h, centrifuging the product, and washing the product to be neutral by using deionized water and ethanol to obtain tetraethoxysilane mesoporous silica nanoparticles;
s3, transferring the product into an acidic ethanol solution, heating and refluxing, removing the template agent, centrifugally purifying, washing with deionized water to neutrality, and drying in vacuum to obtain the mesoporous silica nano particles.
6. The high strength binder containing mesoporous silica nanoparticles according to claim 5, wherein: in step S1, the template agent is a chain transfer agent, cetyl trimethyl ammonium bromide or nano iron oxide particles.
7. The high strength binder containing mesoporous silica nanoparticles according to claim 5, wherein: adding a silane coupling agent into the mesoporous silica nanoparticles prepared in the step S3 to modify the surfaces of the mesoporous silica nanoparticles; the dosage of the silane coupling agent is 1-5% of the mass of the mesoporous silica nano particles.
8. The high strength binder containing mesoporous silica nanoparticles according to claim 1, wherein: the adhesive reinforcing agent is one or a mixture of dopamine and a silane coupling agent, and the amount of the adhesive reinforcing agent is 1-10 wt% of that of the skeleton polymer.
9. The high strength binder containing mesoporous silica nanoparticles according to claim 1, wherein: the auxiliary agent comprises a curing agent, a flatting agent, a defoaming agent and a thickening agent.
10. The high strength binder containing mesoporous silica nanoparticles according to claim 9, wherein: the curing agent is at least one of polyisocyanate and glycidyl ether, and the using amount of the curing agent is 0.1-5 wt% of that of the skeleton polymer.
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| CN202210286403.1A CN114561171A (en) | 2022-03-22 | 2022-03-22 | High-strength binder containing mesoporous silica nanoparticles |
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| CN202210286403.1A CN114561171A (en) | 2022-03-22 | 2022-03-22 | High-strength binder containing mesoporous silica nanoparticles |
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| CN102476803A (en) * | 2010-11-29 | 2012-05-30 | 国家纳米科学中心 | Surface-modified ordered mesoporous silicon dioxide composite material and its preparation method |
| JP2012153804A (en) * | 2011-01-26 | 2012-08-16 | Lintec Corp | Adhesive composition and adhesive sheet |
| CN112322244A (en) * | 2020-11-23 | 2021-02-05 | 西安航空职业技术学院 | High-temperature-resistant adhesive and preparation method thereof |
| JP2021084927A (en) * | 2019-11-26 | 2021-06-03 | 三菱ケミカル株式会社 | Adhesive composition, adhesive and adhesive sheet |
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2022
- 2022-03-22 CN CN202210286403.1A patent/CN114561171A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476803A (en) * | 2010-11-29 | 2012-05-30 | 国家纳米科学中心 | Surface-modified ordered mesoporous silicon dioxide composite material and its preparation method |
| JP2012153804A (en) * | 2011-01-26 | 2012-08-16 | Lintec Corp | Adhesive composition and adhesive sheet |
| JP2021084927A (en) * | 2019-11-26 | 2021-06-03 | 三菱ケミカル株式会社 | Adhesive composition, adhesive and adhesive sheet |
| CN112322244A (en) * | 2020-11-23 | 2021-02-05 | 西安航空职业技术学院 | High-temperature-resistant adhesive and preparation method thereof |
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Application publication date: 20220531 |