CN114790332A - Graphite silica gel protective film and preparation method thereof - Google Patents
Graphite silica gel protective film and preparation method thereof Download PDFInfo
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- CN114790332A CN114790332A CN202210184852.5A CN202210184852A CN114790332A CN 114790332 A CN114790332 A CN 114790332A CN 202210184852 A CN202210184852 A CN 202210184852A CN 114790332 A CN114790332 A CN 114790332A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000000741 silica gel Substances 0.000 title claims abstract description 101
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 101
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 66
- 239000010439 graphite Substances 0.000 title claims abstract description 66
- 230000001681 protective effect Effects 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 25
- JWYUFVNJZUSCSM-UHFFFAOYSA-N 2-aminobenzimidazole Chemical compound C1=CC=C2NC(N)=NC2=C1 JWYUFVNJZUSCSM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- GWTCIAGIKURVBJ-UHFFFAOYSA-L dipotassium;dodecyl phosphate Chemical compound [K+].[K+].CCCCCCCCCCCCOP([O-])([O-])=O GWTCIAGIKURVBJ-UHFFFAOYSA-L 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000002114 nanocomposite Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 238000010924 continuous production Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000013043 chemical agent Substances 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 45
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 32
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 30
- 239000003054 catalyst Substances 0.000 claims description 29
- -1 polysiloxane Polymers 0.000 claims description 22
- 239000003960 organic solvent Substances 0.000 claims description 18
- 229910052697 platinum Inorganic materials 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 15
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 13
- 229910052709 silver Inorganic materials 0.000 claims description 13
- 239000004332 silver Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000004593 Epoxy Substances 0.000 claims description 12
- 150000004645 aluminates Chemical class 0.000 claims description 12
- 239000007822 coupling agent Substances 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 229910052737 gold Inorganic materials 0.000 claims description 12
- 239000010931 gold Substances 0.000 claims description 12
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 12
- 239000004014 plasticizer Substances 0.000 claims description 12
- 229920001296 polysiloxane Polymers 0.000 claims description 12
- 229920002545 silicone oil Polymers 0.000 claims description 12
- 239000002518 antifoaming agent Substances 0.000 claims description 10
- 235000019441 ethanol Nutrition 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 229910052797 bismuth Inorganic materials 0.000 claims description 9
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 229920001046 Nanocellulose Polymers 0.000 claims description 7
- 229920002678 cellulose Polymers 0.000 claims description 7
- 239000001913 cellulose Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920002050 silicone resin Polymers 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 238000006722 reduction reaction Methods 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 3
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 2
- 231100000572 poisoning Toxicity 0.000 claims description 2
- 230000000607 poisoning effect Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 9
- 230000005855 radiation Effects 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 108010025899 gelatin film Proteins 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000006253 pitch coke Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/05—Polysiloxanes containing silicon bound to hydrogen
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
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- C08K2003/0806—Silver
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
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- C08K2003/0831—Gold
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- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3442—Heterocyclic compounds having nitrogen in the ring having two nitrogen atoms in the ring
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Abstract
The invention discloses a graphite silica gel protective film, the main component of which is silica gel; a preparation method of a graphite silica gel protective film comprises the steps of selecting raw materials and related chemical agents; step two, thermally melting the silica gel; step three, synthesizing raw materials; step four, solidifying the graphite silica gel liquid; step five, modifying the surface of the graphite silica gel; and step six, pressing the graphite silica gel into a film. According to the invention, on the basis of 10-30 parts of graphene oxide-gold-silver nano composite, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are additionally added, so that the antistatic effect is remarkably improved, the surface resistivity is below 107 omega, and when the silica gel agent is used for preparing a protective film, the problem that automatic continuous production is influenced due to the fact that static electricity cannot be discharged in the using process of the protective film can be solved, and the labor and time cost in the production process is reduced.
Description
Technical Field
The invention relates to the technical field of graphite silica gel protective films, in particular to a graphite silica gel protective film and a preparation method thereof.
Background
Graphite is an allotrope of carbon, is a gray black and opaque solid, has stable chemical property and corrosion resistance, and is not easy to react with medicaments such as acid, alkali and the like; the natural graphite comes from graphite mineral deposits, and can also be made into artificial graphite by using petroleum coke, pitch coke and the like as raw materials through a series of procedures, and the graphite has metallic luster and can conduct electricity and transfer heat; because the distance between layers is large, the binding force (Van der Waals force) is small, and all layers can slide, the density of graphite is smaller than that of diamond, the graphite is soft and has a greasy feeling, the graphite can also be used for preparing heat dissipation materials, sealing materials, heat insulation materials, radiation protection materials and the like, and the graphite functional materials are widely applied to the industries of metallurgy, chemical engineering, mechanical equipment, new energy automobiles, nuclear power, electronic information, aerospace, national defense and the like.
Through retrieval, the patent publication number is CN108819360B a preparation method of a graphene heat conduction film/heat conduction silica gel film composite material with a layered alternating structure, which is characterized in that the preparation method of the graphene heat conduction film/heat conduction silica gel film composite material with the layered alternating structure is carried out according to the following steps: firstly, preparing a graphene heat conduction film: uniformly mixing a graphene oxide aqueous solution, a reducing agent and nanocellulose for 5-10 min by using a high-speed stirrer, carrying out ultrasonic treatment for 20-60 min, standing at 60-90 ℃ for reduction reaction for 2-6 h, carrying out suction filtration on a mixed fiber microporous filter membrane, alternately washing a filter cake by using ethanol and water until the filtrate is neutral, drying the washed filter cake at 80-120 ℃ for 2-6 h, and stripping the mixed fiber microporous filter membrane and the filter cake to obtain the graphene heat-conducting membrane.
The existing graphite silica gel protective film has the following defects:
1. the antistatic effect of current graphite silica gel protection film is poor, can't solve the protection film in the use because static can't discharge and influence the problem of automatic continuous production, has improved manpower and time cost in the production process, can't discharge static simultaneously and can influence graphite silica gel protection film application range for the graphite silica gel protection film can't use in dry environment.
2. Unable isolated electromagnetic wave and radiation lead to influencing graphite silica gel protection film protection effect owing to unable isolated electromagnetic wave in the graphite silica gel protection film use, have reduced graphite silica gel protection film's protective properties, and unable isolated electromagnetic wave reaches the radiation simultaneously also can influence graphite silica gel protection film application range, have reduced graphite silica gel protection film effect.
Disclosure of Invention
The invention aims to provide a graphite silica gel protective film which mainly comprises silica gel, a graphene oxide-gold and silver nano compound, an aluminate coupling agent, hydroxyalkyl modified polysiloxane, linear methylhydrogen silicone oil, a platinum catalyst, epoxy modified silicone resin, toluene, an organobismuth type catalyst, 2-aminobenzimidazole, potassium monododecyl phosphate, nanocellulose, a plasticizer, a defoaming agent, a film forming agent, an organic solvent and deionized water, wherein 90 parts of silica gel, 10-30 parts of graphene oxide-gold and silver nano compound, 0.01 part of aluminate coupling agent, 2-5 parts of hydroxyalkyl modified polysiloxane, 0.5 part of linear methylhydrogen silicone oil, 0.8-1.2 parts of platinum catalyst, 2-5 parts of epoxy modified silicone resin, 2.5 parts of toluene, 1-5 parts of organobismuth type catalyst and 0.3-2 parts of 2-aminobenzimidazole, 1-3 parts of potassium monododecyl phosphate, 2.5-5 parts of nano-cellulose, 3-10 parts of plasticizer, 2-10 parts of defoaming agent, 1-5 parts of film forming agent, 5-15 parts of organic solvent and 30-60 parts of deionized water.
A preparation method of a graphite silica gel protective film comprises the steps of selecting raw materials and related chemical agents; step two, thermally melting the silica gel; step three, synthesizing raw materials; step four, solidifying the graphite silica gel liquid; step five, modifying the surface of the graphite silica gel; pressing graphite silica gel;
in the first step, an experimenter selects silica gel, a graphene oxide-gold and silver nano compound, an aluminate coupling agent, hydroxyalkyl modified polysiloxane, linear methyl hydrogen silicone oil, a platinum catalyst, epoxy modified silicone resin, toluene, an organic bismuth type catalyst, 2-aminobenzimidazole, potassium monododecyl phosphate, nanocellulose, a plasticizer, an antifoaming agent, a film forming agent and deionized water as required;
in the second step, the experimenter selects the silica gel in the first step, and the silica gel is put in a hot melting furnace to be melted at 120-150 ℃;
wherein in the third step, 90 parts of silica gel, 10-30 parts of graphene oxide-gold and silver nano-composite, 0.01 part of aluminate coupling agent, 2-5 parts of hydroxyalkyl modified polysiloxane, 0.5 part of linear methyl hydrogen silicone oil, 2.5-5 parts of nano-cellulose, 2-5 parts of epoxy modified silicon resin, 2.5 parts of toluene, 1-5 parts of organic bismuth type catalyst, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are selected and uniformly mixed in the first step, a vacuum high-speed stirrer is adopted for uniformly mixing for 5-10 min, then ultrasonic treatment is carried out for 20-60 min, then adding 0.8-1.2 parts of platinum catalyst, stirring for 10-20 min, standing for reduction reaction for 2-6 h at the temperature of 60-90 ℃, and washing with deionized water to remove entrained solution and residual metal etchant;
in the fourth step, 3-10 parts of plasticizer, 2-10 parts of defoamer, 1-5 parts of film-forming agent and 5-15 parts of organic solvent are added into the graphite silica gel liquid, and the mixture is uniformly mixed for 5-10 min by adopting a vacuum high-speed mixer at the temperature of 140-150 ℃, then is subjected to ultrasonic treatment for 20-60 min, and is solidified at the temperature of 60-90 ℃ to form graphite silica gel solid;
in the fifth step, an experimenter immerses the graphite silica gel solid into an ethanol solution of a silane coupling agent II for standing and soaking for 2-20 min, and then the graphite silica gel solid is dried for 0.5-2 h at the temperature of 60-90 ℃ to obtain a graphite silica gel solid with the silane modified surface; the volume ratio of the silane coupling agent II to the absolute ethyl alcohol in the ethyl alcohol solution of the silane coupling agent II is 1 (1-5); the silane coupling agent II in the ethanol solution of the silane coupling agent II is one or a mixture of more of vinyl triethoxysilane, vinyl trimethoxysilane and vinyl tri (beta-methoxyethoxy) silane;
in the sixth step, an experimenter presses the modified graphite silica gel solid in the fifth step into a film by using a calender, and then the film is cured for 5min to 120min at the curing temperature of 80 ℃ to 150 ℃ to obtain the graphite silica gel protective film.
Preferably, the organic solvent in the second step comprises 8-15 parts of dimethylformamide, 5-10 parts of toluene, 5-10 parts of isopropanol and three organic solvents with different boiling points, and the three organic solvents are subjected to gradient volatilization in the curing process, so that the raw materials can be kept in a flat state at each stage.
Preferably, in the third step, on the basis of 10-30 parts of the graphene oxide-gold and silver nano composite, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are additionally added, so that the antistatic effect is remarkably improved, the surface resistivity is below 107 omega, and when the silica gel agent is used for preparing the protective film, the problem that automatic continuous production is influenced due to the fact that static electricity cannot be discharged in the using process of the protective film can be solved, and the labor and time costs in the production process are reduced.
Preferably, an organic bismuth type catalyst is adopted in the third step, so that the platinum in a silica gel system is prevented from being poisoned, the silica gel can be directly coated, the material is soft before the bonding, the air exhaust performance of the silica gel is good, the content of volatilized TVOC (total volatile organic compound) is low, and the material can be rapidly hardened after the ultraviolet curing.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, on the basis of 10-30 parts of graphene oxide-gold and silver nano composite, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are additionally added, so that the antistatic effect is remarkably improved, the surface resistivity is below 107 omega, when the silica gel agent is used for preparing a protective film, the problem that the automatic continuous production is influenced due to the fact that static electricity cannot be discharged in the using process of the protective film can be solved, the labor and time cost in the production process is reduced, the radiation protection and antibacterial performance of the graphite silica gel protective film prepared by the graphene oxide-barium and silver nano composite are enhanced, the problem that the protective effect of the graphite silica gel protective film is influenced by electromagnetic waves is solved, the protective performance of the graphite silica gel protective film is improved, the application range of the graphite silica gel protective film is expanded, and the effect of the graphite silica gel protective film is improved, the dispersion problem of the graphene is solved through the nano-cellulose, and the graphene is prevented from agglomerating in the reduction process by adopting a method for synchronously performing dispersion and reduction.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present invention:
example 1
The graphite silica gel protective film mainly comprises silica gel, graphene oxide-gold-silver nano compound, aluminate coupling agent, hydroxyalkyl modified polysiloxane, linear methyl hydrogen silicone oil, platinum catalyst, epoxy modified silicone resin, toluene, organobismuth catalyst, 2-aminobenzimidazole, potassium monododecyl phosphate, nanocellulose, plasticizer, defoaming agent, film forming agent, organic solvent and deionized water, wherein 90 parts of silica gel, 10-30 parts of graphene oxide-gold-silver nano compound, 0.01 part of aluminate coupling agent, 2-5 parts of hydroxyalkyl modified polysiloxane, 0.5 part of linear methyl hydrogen silicone oil, 0.8-1.2 parts of platinum catalyst, 2-5 parts of epoxy modified silicone resin, 2.5 parts of toluene, 1-5 parts of organobismuth catalyst, 0.3-2 parts of 2-aminobenzimidazole, 1-3 parts of potassium monododecyl phosphate, and the like, 2.5-5 parts of nano-cellulose, 3-10 parts of plasticizer, 2-10 parts of defoaming agent, 1-5 parts of film forming agent, 5-15 parts of organic solvent and 30-60 parts of deionized water.
A preparation method of a graphite silica gel protective film comprises the steps of selecting raw materials and related chemical agents; step two, thermally melting the silica gel; step three, synthesizing raw materials; step four, solidifying the graphite silica gel liquid; step five, modifying the surface of the graphite silica gel; pressing graphite silica gel into a film;
in the first step, an experimenter selects silica gel, a graphene oxide-gold and silver nano compound, an aluminate coupling agent, hydroxyalkyl modified polysiloxane, linear methyl hydrogen silicone oil, a platinum catalyst, epoxy modified silicone resin, toluene, an organic bismuth type catalyst, 2-aminobenzimidazole, potassium monododecyl phosphate, nanocellulose, a plasticizer, an antifoaming agent, a film-forming agent and deionized water as required;
in the second step, the experimenter selects the silica gel in the first step, and the silica gel is placed in a hot melting furnace to be melted at 120-150 ℃;
wherein in the third step, 90 parts of silica gel, 10-30 parts of graphene oxide-gold and silver nano-composite, 0.01 part of aluminate coupling agent, 2-5 parts of hydroxyalkyl modified polysiloxane, 0.5 part of linear methyl hydrogen silicone oil, 2.5-5 parts of nano-cellulose, 2-5 parts of epoxy modified silicon resin, 2.5 parts of toluene, 1-5 parts of organic bismuth type catalyst, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are selected and uniformly mixed in the first step, a vacuum high-speed stirrer is adopted for uniformly mixing for 5-10 min, then ultrasonic treatment is carried out for 20-60 min, then adding 0.8-1.2 parts of platinum catalyst, stirring for 10-20 min, standing for reduction reaction for 2-6 h at the temperature of 60-90 ℃, and washing with deionized water to remove entrained solution and residual metal etchant;
in the fourth step, 3-10 parts of plasticizer, 2-10 parts of defoaming agent, 1-5 parts of film forming agent and 5-15 parts of organic solvent are added into the graphite silica gel liquid, the mixture is uniformly mixed for 5-10 min by a vacuum high-speed mixer at the temperature of 140-150 ℃, then ultrasonic treatment is carried out for 20-60 min, and the mixture is solidified at the temperature of 60-90 ℃ to form graphite silica gel solid;
in the fifth step, an experimenter immerses the graphite silica gel solid into an ethanol solution of a silane coupling agent II for standing and soaking for 2-20 min, and then the graphite silica gel solid is dried for 0.5-2 h at the temperature of 60-90 ℃ to obtain a graphite silica gel solid with the silane modified surface; the volume ratio of the silane coupling agent II to the absolute ethyl alcohol in the ethyl alcohol solution of the silane coupling agent II is 1 (1-5); the silane coupling agent II in the ethanol solution of the silane coupling agent II is one or a mixture of more of vinyltriethoxysilane, vinyltrimethoxysilane and vinyltris (beta-methoxyethoxy) silane;
in the sixth step, an experimenter presses the modified graphite silica gel solid in the fifth step into a film by using a calender, and then the film is cured for 5min to 120min at the curing temperature of 80 ℃ to 150 ℃ to obtain the graphite silica gel protective film.
Example 2
In the second step, the organic solvent comprises 8-15 parts of dimethylformamide, 5-10 parts of toluene, 5-10 parts of isopropanol and three organic solvents with different boiling points, and the three organic solvents are subjected to gradient volatilization in the curing process, so that the raw materials can be kept in a flat state at each stage; in the third step, on the basis of 10-30 parts of graphene oxide-gold and silver nano composite, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are additionally added, so that the antistatic effect is remarkably improved, the surface resistivity is below 107 omega, and when the silica gel agent is used for preparing a protective film, the problem that automatic continuous production is influenced due to the fact that static electricity cannot be discharged in the using process of the protective film can be solved, and the labor and time costs in the production process are reduced; in the third step, an organic bismuth type catalyst is adopted, the platinum poisoning phenomenon in a silica gel system is avoided, the silica gel can be directly coated, the material is soft before the bonding, the air exhaust performance of the silica gel is good, the volatile TVOC content is low, and the material can be rapidly hardened after the ultraviolet curing.
The details of the present invention are well known to those skilled in the art.
Finally, it is to be noted that: although the present invention has been described in detail with reference to examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A graphite silica gel protection film which is characterized in that: the main components of the catalyst are silica gel, a graphene oxide-gold silver nano compound, an aluminate coupling agent, hydroxyalkyl modified polysiloxane, linear methyl hydrogen silicone oil, a platinum catalyst, epoxy modified silicon resin, toluene, an organobismuth type catalyst, 2-aminobenzimidazole, potassium monododecyl phosphate, nanocellulose, a plasticizer, a defoaming agent, a film forming agent, an organic solvent and deionized water, wherein 90 parts of silica gel, 10-30 parts of graphene oxide-gold silver nano compound, 0.01 part of aluminate coupling agent, 2-5 parts of hydroxyalkyl modified polysiloxane, 0.5 part of linear methyl hydrogen silicone oil, 0.8-1.2 parts of platinum catalyst, 2-5 parts of epoxy modified silicon resin, 2.5 parts of toluene, 1-5 parts of organobismuth type catalyst, 0.3-2 parts of 2-aminobenzimidazole, 1-3 parts of potassium monododecyl phosphate, 1-3 parts of platinum catalyst, and a mixed solvent, 2.5-5 parts of nano-cellulose, 3-10 parts of plasticizer, 2-10 parts of defoaming agent, 1-5 parts of film forming agent, 5-15 parts of organic solvent and 30-60 parts of deionized water.
2. A preparation method of a graphite silica gel protective film comprises the steps of selecting raw materials and related chemical agents; step two, hot melting the silica gel; step three, synthesizing raw materials; step four, solidifying the graphite silica gel liquid; step five, modifying the surface of the graphite silica gel; step six, pressing graphite silica gel into a film, which is characterized in that:
in the first step, an experimenter selects silica gel, a graphene oxide-gold and silver nano compound, an aluminate coupling agent, hydroxyalkyl modified polysiloxane, linear methyl hydrogen silicone oil, a platinum catalyst, epoxy modified silicone resin, toluene, an organic bismuth type catalyst, 2-aminobenzimidazole, potassium monododecyl phosphate, nanocellulose, a plasticizer, an antifoaming agent, a film-forming agent and deionized water as required;
in the second step, the experimenter selects the silica gel in the first step, and the silica gel is put in a hot melting furnace to be melted at 120-150 ℃;
wherein in the third step, 90 parts of silica gel, 10-30 parts of graphene oxide-gold and silver nano-composite, 0.01 part of aluminate coupling agent, 2-5 parts of hydroxyalkyl modified polysiloxane, 0.5 part of linear methyl hydrogen silicone oil, 2.5-5 parts of nano-cellulose, 2-5 parts of epoxy modified silicon resin, 2.5 parts of toluene, 1-5 parts of organic bismuth type catalyst, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are selected and uniformly mixed, a vacuum high-speed mixer is adopted to uniformly mix for 5-10 min, then ultrasonic treatment is carried out for 20-60 min, then adding 0.8-1.2 parts of platinum catalyst, stirring for 10-20 min, standing for reduction reaction for 2-6 h at the temperature of 60-90 ℃, and washing with deionized water to remove entrained solution and residual metal etchant;
in the fourth step, 3-10 parts of plasticizer, 2-10 parts of defoamer, 1-5 parts of film-forming agent and 5-15 parts of organic solvent are added into the graphite silica gel liquid, and the mixture is uniformly mixed for 5-10 min by adopting a vacuum high-speed mixer at the temperature of 140-150 ℃, then is subjected to ultrasonic treatment for 20-60 min, and is solidified at the temperature of 60-90 ℃ to form graphite silica gel solid;
in the fifth step, an experimenter immerses the graphite silica gel solid into an ethanol solution of a silane coupling agent II for standing and soaking for 2-20 min, and then the graphite silica gel solid is dried for 0.5-2 h at the temperature of 60-90 ℃ to obtain a graphite silica gel solid with the silane modified surface; the volume ratio of the silane coupling agent II to the absolute ethyl alcohol in the ethyl alcohol solution of the silane coupling agent II is 1 (1-5); the silane coupling agent II in the ethanol solution of the silane coupling agent II is one or a mixture of more of vinyltriethoxysilane, vinyltrimethoxysilane and vinyltris (beta-methoxyethoxy) silane;
in the sixth step, an experimenter presses the modified graphite silica gel solid substance obtained in the fifth step into a film by using a calender, and then the film is cured for 5-120 min at the curing temperature of 80-150 ℃ to obtain the graphite silica gel protective film.
3. The method for preparing a graphite silica gel protective film according to claim 2, wherein the method comprises the following steps: in the second step, the organic solvent comprises 8-15 parts of dimethylformamide, 5-10 parts of toluene, 5-10 parts of isopropanol and three organic solvents with different boiling points, and the three organic solvents are subjected to gradient volatilization in the curing process, so that the raw materials can be kept in a flat state at each stage.
4. The method for preparing a graphite silica gel protective film according to claim 2, wherein: in the third step, on the basis of 10-30 parts of graphene oxide-gold and silver nano composite, 0.3-2 parts of 2-aminobenzimidazole and 1-3 parts of potassium monododecyl phosphate are additionally added, so that the antistatic effect is remarkably improved, the surface resistivity is below 107 omega, and when the silica gel agent is used for preparing a protective film, the problem that automatic continuous production is influenced due to the fact that static cannot be discharged in the using process of the protective film can be solved, and the labor and time cost in the production process is reduced.
5. The method for preparing a graphite silica gel protective film according to claim 2, wherein the method comprises the following steps: and in the third step, an organic bismuth type catalyst is adopted, so that the platinum poisoning phenomenon in a silica gel system is avoided, the silica gel can be directly coated, the material is soft before the bonding, the exhaust performance of the silica gel is good, the volatilized TVOC content is low, and the TVOC can be rapidly hardened and fixed after the ultraviolet curing.
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