CN111393919A - Novel nano material applied to moisture resistance and stain resistance of electronic components - Google Patents
Novel nano material applied to moisture resistance and stain resistance of electronic components Download PDFInfo
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- CN111393919A CN111393919A CN202010256013.0A CN202010256013A CN111393919A CN 111393919 A CN111393919 A CN 111393919A CN 202010256013 A CN202010256013 A CN 202010256013A CN 111393919 A CN111393919 A CN 111393919A
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- 239000002086 nanomaterial Substances 0.000 title claims abstract description 63
- 229920002313 fluoropolymer Polymers 0.000 claims abstract description 61
- 239000004811 fluoropolymer Substances 0.000 claims abstract description 61
- 239000002904 solvent Substances 0.000 claims abstract description 61
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 49
- 239000011737 fluorine Substances 0.000 claims abstract description 49
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 21
- -1 nano-scale oxide Substances 0.000 claims abstract description 20
- 230000004048 modification Effects 0.000 claims abstract description 19
- 238000012986 modification Methods 0.000 claims abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- 239000000243 solution Substances 0.000 claims description 40
- 238000002360 preparation method Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000003472 neutralizing effect Effects 0.000 claims description 20
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 19
- 239000012965 benzophenone Substances 0.000 claims description 19
- 239000003054 catalyst Substances 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 13
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 10
- 230000004913 activation Effects 0.000 claims description 10
- 238000010894 electron beam technology Methods 0.000 claims description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical group [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims description 9
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- HCGFUIQPSOCUHI-UHFFFAOYSA-N 2-propan-2-yloxyethanol Chemical compound CC(C)OCCO HCGFUIQPSOCUHI-UHFFFAOYSA-N 0.000 claims description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical group OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 229960002449 glycine Drugs 0.000 claims description 5
- 235000013905 glycine and its sodium salt Nutrition 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims description 3
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 claims description 3
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 230000003373 anti-fouling effect Effects 0.000 abstract description 9
- 238000009827 uniform distribution Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 11
- 230000032683 aging Effects 0.000 description 10
- 239000003921 oil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- DHGUOKRCSSAAPM-UHFFFAOYSA-N dimethoxy-octyl-(trifluoromethoxy)silane Chemical group FC(O[Si](OC)(OC)CCCCCCCC)(F)F DHGUOKRCSSAAPM-UHFFFAOYSA-N 0.000 description 3
- KKYDYRWEUFJLER-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,10,10,10-heptadecafluorodecyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)CCC(F)(F)F KKYDYRWEUFJLER-UHFFFAOYSA-N 0.000 description 2
- LBTSNEJGMVFUEW-UHFFFAOYSA-N 2,2,3,3,4,4,5,5,6,8,8,8-dodecafluorooctoxy-dimethoxy-propylsilane Chemical compound FC(C(C(C(C(F)(F)CO[Si](OC)(OC)CCC)(F)F)(F)F)(F)F)CC(F)(F)F LBTSNEJGMVFUEW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/14—Homopolymers or copolymers of vinyl fluoride
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions 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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/16—Homopolymers or copolymers of vinylidene fluoride
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
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Abstract
The invention discloses a novel moisture-proof and stain-resistant nano material applied to electronic components, which is prepared by forming a mixed system by nano-scale fluoropolymer and nano-scale oxide and then carrying out surface modification; the reaction raw materials are as follows: nano-scale fluoropolymer, nano-scale oxide, fluorine-containing silane coupling agent and S solvent; the reaction raw materials are nano-scale fluorine polymer according to mass ratio: nano-scale oxide: fluorine-containing silane coupling agent: and (5) an S solvent which is 5-9: 2-7: 1: 30-80 parts. The novel nano material is prepared by a mixing system consisting of the nano-fluorine polymer and the nano-oxide and performing modification treatment, and has good stability, uniform distribution and more stable moisture-proof and anti-fouling performance.
Description
Technical Field
The invention relates to the technical field of nano materials, in particular to a novel moisture-proof and stain-resistant nano material applied to electronic components.
Background
Due to the needs of social development, electronic devices become more and more complex, which requires that the electronic devices have the characteristics of reliability, high speed, low power consumption, light weight, miniaturization, low cost and the like; the electronic components are important components of electronic elements, small machines and instruments, and mainly comprise: resistors, capacitors, inductors, potentiometers, valves, etc.
According to the difference such as external environment, electronic components is preserved and is used the stained condition that easily appears getting damp, and lead to the short circuit phenomenon to appear to causing oxidation to electronic components internal circuit etc. and cause electronic components's work unusual or scrap, it can be said, the threat of humidity to electronic components's production and save is very big, however, at current dampproofing material for electronic components, often along with the time lapse in the use, appear droing, the huge or even inefficacy condition of humidity resistance decline, its stability is relatively poor, it is difficult to keep dampproofing anti-soil's effect for a long time, this protection to electronic components has not little hidden danger.
Therefore, according to the existing problems, a novel material is developed and produced to solve the anti-pollution and moisture-proof performance of the electronic components, and plays an important role in the stability and quality of the electronic components.
Disclosure of Invention
In order to solve the technical problems, the invention provides a novel moisture-proof and stain-resistant nano material applied to electronic components.
The technical scheme of the invention is as follows: a novel moisture-proof and stain-resistant nano material applied to electronic components is prepared by forming a mixed system by nano-scale fluoropolymer and nano-scale oxide and then carrying out surface modification;
the reaction raw materials are as follows: nano-scale fluoropolymer, nano-scale oxide, fluorine-containing silane coupling agent and S solvent; the reaction raw materials are nano-scale fluorine polymer according to mass ratio: nano-scale oxide: fluorine-containing silane coupling agent: and (5) an S solvent which is 5-9: 2-7: 1: 30-80 parts;
the S solvent comprises ethylene glycol ethyl ether, benzophenone, isopropylene glycol and water, and the mass ratio of the ethylene glycol ethyl ether to the benzophenone is as follows: benzophenone: isopropyl glycol: and (3) water is 5-10: 1: 15-20: 3.
the novel nano material is obtained by a mixing system formed by the nano-fluorine polymer and the nano-oxide and carrying out modification treatment, and the prepared nano material has higher stability and more stable moisture-proof and anti-fouling performance when being applied to the surface coating of electronic components.
Further, the average particle size of the nano-scale fluoropolymer is 20-50 nm, and the average particle size of the nano-scale oxide is 1-30 nm. The mixed system formed by the nanometer fluorine polymer and the nanometer oxide is beneficial to enhancing the modification treatment of the subsequent preparation method and improving the service performance of the novel nanometer material.
Further, the nano-scale fluoropolymer is one or a combination of polytetrafluoroethylene, polyvinylidene fluoride, polychlorotrifluoroethylene and polyvinyl fluoride.
Further, the nanoscale oxide is one or a combination of more of nano titanium dioxide, nano silicon dioxide and nano aluminum dioxide.
Further, the fluorine-containing silane coupling agent is selected from a perfluoro long-chain silane coupling agent, and the length of a carbon chain of the perfluoro long-chain silane coupling agent is more than or equal to 9; more preferably one or more selected from heptadecafluorodecyltrimethoxysilane, tridecafluorooctyltrimethoxysilane, dodecafluoroheptylpropyltrimethoxysilane.
Further, the novel nano material is used for surface treatment of electronic components. Adopt above-mentioned novel nano-material to carry out electronic components's surface coating, make electronic components have good resistant dirt nature, and with water contact angle more than or equal to 145, with oily contact angle more than or equal to 120, have good hydrophobic, oleophobic performance, can give electronic components more excellent dampproofing anti-soil function, reinforcing electronic components's stability.
Further, the preparation method of the novel nano material comprises the following steps:
s1: pretreatment: soaking the nanoscale fluoropolymer and the nanoscale oxide in an alkaline S solvent for 5-15 min, neutralizing by using a neutralizing agent, cleaning and drying for later use, wherein the alkaline S solvent is an S solvent with the pH value of 9-11 adjusted by using an alkaline catalyst;
s2, particle activation, namely, putting the pretreated nano-scale fluoropolymer and nano-scale oxide into a plasma processor, vacuumizing to 30-450 Pa, introducing inert gas at the flow rate of 2-7L/h, and performing surface activation on the nano-scale fluoropolymer and the nano-scale oxide for 1-30 min under the power of 200-600W;
s3: preparation of a mixed system: adding the nano-scale fluoropolymer treated in the step S2 into a solvent S, and performing ultrasonic dispersion at 25-30 ℃ to obtain a nano-scale fluoropolymer solution for later use; heating the nano-scale fluoropolymer solution to 65-73 ℃ at the speed of 3-5 ℃/min, adding the nano-scale oxide into the nano-scale fluoropolymer solution, and stirring and mixing to obtain a mixed system solution;
s4: surface modification treatment: adding an alkaline catalyst into the mixed system solution to adjust the pH value of the mixed system solution to 7.5-8.5, then flatly paving the mixed system solution on a magnetic substrate, controlling the flatly paving depth to be 1-1.5 cm, and mixing a fluorine-containing silane coupling agent and an S solvent according to the mass ratio of 1: 10-15 are mixed and then dropped into a mixed system for multiple times, and the mixed solution is passed through60Performing Co source or electron beam irradiation treatment, reacting for multiple times at 75-85 ℃, then adding a neutralizing agent to enable the pH value of the mixed system solution to be 7, and filtering to obtain a novel nano material;
wherein the total mass of the S solvent in the steps S2 and S3 and the ratio of other substances are as follows: nanoscale fluoropolymers: nano-scale oxide: fluorine-containing silane coupling agent: and (5) an S solvent which is 5-9: 2-7: 1: 30-80, wherein the alkaline S solvent in the step S1 is not added into the mass ratio.
Through the treatment of the steps S1 and S2, the particle activity of the nano-fluorine polymer and the nano-oxide is enhanced, the surface contact activity of the nano-fluorine polymer and the nano-oxide is improved, and the effect of subsequent modification treatment is enhanced, through the mixing method of the step S3, the nano-fluorine polymer solution is prepared firstly, and then the nano-oxide is mixed in a gradient heating mode, so that the obtained mixed system solution is more uniform and stable, and the treatment effect of subsequent reaction is improved, through the modification method of the step S4, the modification treatment effect of the nano-fluorine polymer and the nano-oxide is enhanced through the modification of a chemical reagent and the irradiation treatment, so that the prepared novel nano-material has stronger stability, the adhesiveness of the novel nano-fluorine polymer and the nano-oxide is obviously enhanced, and the moisture-proof and anti-fouling effective.
Further, the alkaline catalyst is one or two of potassium carbonate, potassium hydroxide and sodium hydroxide; the neutralizing agent is one of triethanolamine and aminoacetic acid. However, the basic catalyst and the neutralizing agent are not limited to the above-mentioned combinations.
Further, the60The irradiation dose of Co source or electron beam irradiation is 300-1500 kGy. The experiment shows that the irradiation dose in the range can be effectively matched with modification treatment, and the modification effect is improved and enhanced, so that the moisture resistance and the pollution resistance of the prepared novel nano material applied to the coating of the electronic component are enhanced.
The invention has the beneficial effects that:
(1) the novel nano material is prepared by a mixing system consisting of the nano-fluorine polymer and the nano-oxide and performing modification treatment, and has good stability, uniform distribution and more stable moisture-proof and anti-fouling performance.
(2) The novel nano material disclosed by the invention is chemically stable, has good stain resistance, has a contact angle with water of more than or equal to 145 degrees and a contact angle with oil of more than or equal to 120 degrees, has good hydrophobic and oleophobic properties, can endow electronic components with more excellent moisture-proof and stain-resistant functions, and enhances the stability of the electronic components.
(3) The novel nano material enhances the modification effect on the nano-scale fluorine polymer and the nano-scale oxide through the optimization and improvement of the preparation process, obviously improves the bonding and adhesion performance, can effectively keep the moisture-proof and anti-fouling effects for a long time when being applied to the surface treatment of electronic components, and has the moisture-proof and anti-fouling effect aging time which is 2-3 times longer than that of the traditional moisture-proof coating material.
Detailed Description
Example 1
A novel moisture-proof and stain-resistant nano material applied to electronic components is prepared by forming a mixed system by nano-scale fluoropolymer and nano-scale oxide and then carrying out surface modification;
the reaction raw materials are as follows: nano-scale fluoropolymer, nano-scale oxide, fluorine-containing silane coupling agent and S solvent; the reaction raw materials are nano-scale fluorine polymer according to mass ratio: nano-scale oxide: fluorine-containing silane coupling agent: s solvent 7: 5: 1: 65; wherein the average particle size of the nano-scale fluoropolymer is 20-50 nm, and the average particle size of the nano-scale oxide is 1-30 nm;
the S solvent comprises ethylene glycol ethyl ether, benzophenone, isopropylene glycol and water, and the mass ratio of the ethylene glycol ethyl ether to the benzophenone is as follows: benzophenone: isopropyl glycol: water 7: 1: 18: 3;
the nano-scale fluoropolymer is polytetrafluoroethylene; the nano-scale oxide is nano titanium dioxide and nano silicon dioxide, and the mass ratio of the nano titanium dioxide to the nano silicon dioxide is 1: 2, mixing; the fluorine-containing silane coupling agent is selected from trifluoro octyl trimethoxy silane.
The preparation method of the novel nano material comprises the following steps:
s1: pretreatment: soaking the nanoscale fluoropolymer and the nanoscale oxide in an alkaline S solvent for 5-15 min, neutralizing by using a neutralizing agent, cleaning and drying for later use, wherein the alkaline S solvent is an S solvent with the pH value of 10 adjusted by using an alkaline catalyst;
s2, particle activation, namely, putting the pretreated nano-scale fluoropolymer and nano-scale oxide into a plasma processor, vacuumizing to 350Pa, introducing inert gas at the flow rate of 5L/h, and performing surface activation on the nano-scale fluoropolymer and the nano-scale oxide for 25min under the power of 450W;
s3: preparation of a mixed system: adding the nano-scale fluoropolymer treated in the step S2 into a solvent S, and performing ultrasonic dispersion at 27 ℃ to obtain a nano-scale fluoropolymer solution for later use; then heating the nano-scale fluoropolymer solution to 71 ℃ at the speed of 4 ℃/min, adding the nano-scale oxide into the nano-scale fluoropolymer solution, and stirring and mixing to obtain a mixed system solution;
s4: surface modification treatment: adding an alkaline catalyst into the mixed system solution to adjust the pH value to 7.5-8.5, and thenAnd then, flatly paving the mixed system solution on a magnetic substrate, controlling the flatly paving depth to be 1.2cm, and mixing the fluorine-containing silane coupling agent with the S solvent according to the mass ratio of 1: 13 is mixed and dropped into the mixed system for 5 times and then is mixed60Treatment by Co source or electron beam irradiation, said60The irradiation dose of Co source or electron beam irradiation is 1200kGy, after 5 times of reaction at 79 ℃, a neutralizer is added to ensure that the pH value of the mixed system solution is 7, and the novel nano material is obtained by filtering;
wherein the total mass of the S solvent in the steps S2 and S3 and the ratio of other substances are as follows: nanoscale fluoropolymers: nano-scale oxide: fluorine-containing silane coupling agent: s solvent 7: 5: 1: 65, the basic S solvent in the step S1 is not added to the above mass ratio. The alkaline catalyst is one or two of potassium carbonate, potassium hydroxide and sodium hydroxide; the neutralizing agent is one of triethanolamine and aminoacetic acid. However, the basic catalyst and the neutralizing agent are not limited to the above-mentioned combinations.
The novel nano material is used for surface treatment of electronic components. Adopt above-mentioned novel nano-material to carry out electronic components's surface coating, make electronic components have good resistant dirt nature, and with water contact angle more than or equal to 145, with oily contact angle more than or equal to 120, have good hydrophobic, oleophobic performance, can give electronic components more excellent dampproofing anti-soil function, reinforcing electronic components's stability.
Example 2
The reaction raw materials in this example are basically the same as those in example 1, and the difference is that the preparation method of the novel nanomaterial is different, specifically:
the preparation method of the novel nano material comprises the following steps:
s1: pretreatment: soaking the nanoscale fluoropolymer and the nanoscale oxide in an alkaline S solvent for 5-15 min, neutralizing by using a neutralizing agent, cleaning and drying for later use, wherein the alkaline S solvent is an S solvent with the pH value of 9 adjusted by using an alkaline catalyst;
s2, particle activation, namely, putting the pretreated nano-scale fluoropolymer and nano-scale oxide into a plasma processor, vacuumizing to 30Pa, introducing inert gas at the flow rate of 2L/h, and performing surface activation on the nano-scale fluoropolymer and the nano-scale oxide for 5min under the power of 200W;
s3: preparation of a mixed system: adding the nano-scale fluoropolymer treated in the step S2 into a solvent S, and performing ultrasonic dispersion at 25 ℃ to obtain a nano-scale fluoropolymer solution for later use; then heating the nano-scale fluoropolymer solution to 65 ℃ at the speed of 3 ℃/min, adding the nano-scale oxide into the nano-scale fluoropolymer solution, and stirring and mixing to obtain a mixed system solution;
s4: surface modification treatment: adding an alkaline catalyst into the mixed system solution to adjust the pH value of the mixed system solution to 7.5-8.5, then flatly paving the mixed system solution on a magnetic substrate, controlling the flatly paving depth to be 1cm, and mixing a fluorine-containing silane coupling agent and an S solvent according to the mass ratio of 1: 10 is mixed and then dropped into a mixing system for multiple times and passes60Treatment by Co source or electron beam irradiation, said60The irradiation dose of Co source or electron beam irradiation is 500kGy, after multiple reactions at 75 ℃, a neutralizer is added to make the pH value of the mixed system solution be 7, and a novel nano material is obtained by filtering;
wherein the total mass of the S solvent in the steps S2 and S3 and the ratio of other substances are as follows: nanoscale fluoropolymers: nano-scale oxide: fluorine-containing silane coupling agent: s solvent 7: 5: 1: 65, the basic S solvent in the step S1 is not added to the above mass ratio. The alkaline catalyst is one or two of potassium carbonate, potassium hydroxide and sodium hydroxide; the neutralizing agent is one of triethanolamine and aminoacetic acid. However, the basic catalyst and the neutralizing agent are not limited to the above-mentioned combinations.
The novel nano material is used for surface treatment of electronic components. Adopt above-mentioned novel nano-material to carry out electronic components's surface coating, make electronic components have good resistant dirt nature, and with water contact angle more than or equal to 145, with oily contact angle more than or equal to 120, have good hydrophobic, oleophobic performance, can give electronic components more excellent dampproofing anti-soil function, reinforcing electronic components's stability.
Example 3
The reaction raw materials in this example are basically the same as those in example 1, and the difference is that the preparation method of the novel nanomaterial is different, specifically:
the preparation method of the novel nano material comprises the following steps:
s1: pretreatment: soaking the nanoscale fluoropolymer and the nanoscale oxide in an alkaline S solvent for 5-15 min, neutralizing by using a neutralizing agent, cleaning and drying for later use, wherein the alkaline S solvent is an S solvent with the pH value of 11 adjusted by using an alkaline catalyst;
s2, particle activation, namely, putting the pretreated nano-scale fluoropolymer and nano-scale oxide into a plasma processor, vacuumizing to 450Pa, introducing inert gas at the flow rate of 7L/h, and performing surface activation on the nano-scale fluoropolymer and the nano-scale oxide for 30min under the power of 600W;
s3: preparation of a mixed system: adding the nano-scale fluoropolymer treated in the step S2 into a solvent S, and performing ultrasonic dispersion at 30 ℃ to obtain a nano-scale fluoropolymer solution for later use; then heating the nano-scale fluoropolymer solution to 73 ℃ at the speed of 5 ℃/min, adding the nano-scale oxide into the nano-scale fluoropolymer solution, and stirring and mixing to obtain a mixed system solution;
s4: surface modification treatment: adding an alkaline catalyst into the mixed system solution to adjust the pH value to 8.5, then flatly paving the mixed system solution on a magnetic substrate, controlling the flatly paving depth to be 1.5cm, and mixing a fluorine-containing silane coupling agent and an S solvent according to the mass ratio of 1: 15 are mixed and then dropped into a mixed system for multiple times and are mixed through60Treatment by Co source or electron beam irradiation, said60The irradiation dose of Co source or electron beam irradiation is 1500kGy, after a plurality of reactions at 85 ℃, a neutralizer is added to make the pH value of the mixed system solution be 7, and a novel nano material is obtained by filtering;
wherein the total mass of the S solvent in the steps S2 and S3 and the ratio of other substances are as follows: nanoscale fluoropolymers: nano-scale oxide: fluorine-containing silane coupling agent: s solvent 7: 5: 1: 65, the basic S solvent in the step S1 is not added to the above mass ratio. The alkaline catalyst is one or two of potassium carbonate, potassium hydroxide and sodium hydroxide; the neutralizing agent is one of triethanolamine and aminoacetic acid. However, the basic catalyst and the neutralizing agent are not limited to the above-mentioned combinations.
The novel nano material is used for surface treatment of electronic components. Adopt above-mentioned novel nano-material to carry out electronic components's surface coating, make electronic components have good resistant dirt nature, and with water contact angle more than or equal to 145, with oily contact angle more than or equal to 120, have good hydrophobic, oleophobic performance, can give electronic components more excellent dampproofing anti-soil function, reinforcing electronic components's stability.
Example 4
The present example is the same as the preparation method of example 1, and is different from the preparation method of example 1 in that the reaction raw materials of the novel nanomaterial are different, specifically:
the reaction raw materials are as follows: nano-scale fluoropolymer, nano-scale oxide, fluorine-containing silane coupling agent and S solvent; the reaction raw materials are nano-scale fluorine polymer according to mass ratio: nano-scale oxide: fluorine-containing silane coupling agent: s solvent 5: 2: 1: 30, of a nitrogen-containing gas; wherein the average particle size of the nano-scale fluoropolymer is 20-50 nm, and the average particle size of the nano-scale oxide is 1-30 nm;
the S solvent comprises ethylene glycol ethyl ether, benzophenone, isopropylene glycol and water, and the mass ratio of the ethylene glycol ethyl ether to the benzophenone is as follows: benzophenone: isopropyl glycol: water 5: 1: 15: 3;
the nano-scale fluoropolymer is polytetrafluoroethylene; the nano-scale oxide is nano titanium dioxide and nano silicon dioxide, and the mass ratio of the nano titanium dioxide to the nano silicon dioxide is 1: 2, mixing; the fluorine-containing silane coupling agent is selected from trifluoro octyl trimethoxy silane.
Example 5
The present example is the same as the preparation method of example 1, and is different from the preparation method of example 1 in that the reaction raw materials of the novel nanomaterial are different, specifically:
the reaction raw materials are as follows: nano-scale fluoropolymer, nano-scale oxide, fluorine-containing silane coupling agent and S solvent; the reaction raw materials are nano-scale fluorine polymer according to mass ratio: nano-scale oxide: fluorine-containing silane coupling agent: s solvent 9: 7: 1: 80; wherein the average particle size of the nano-scale fluoropolymer is 20-50 nm, and the average particle size of the nano-scale oxide is 1-30 nm;
the S solvent comprises ethylene glycol ethyl ether, benzophenone, isopropylene glycol and water, and the mass ratio of the ethylene glycol ethyl ether to the benzophenone is as follows: benzophenone: isopropyl glycol: water 10: 1: 20: 3;
the nano-scale fluoropolymer is polytetrafluoroethylene; the nano-scale oxide is nano titanium dioxide and nano silicon dioxide, and the mass ratio of the nano titanium dioxide to the nano silicon dioxide is 1: 2, mixing; the fluorine-containing silane coupling agent is selected from trifluoro octyl trimethoxy silane.
Example 6
The present example is the same as the preparation method of example 1, and is different from the preparation method of example 1 in that the reaction raw materials of the novel nanomaterial are different, specifically:
the reaction raw materials are as follows: nano-scale fluoropolymer, nano-scale oxide, fluorine-containing silane coupling agent and S solvent; the reaction raw materials are nano-scale fluorine polymer according to mass ratio: nano-scale oxide: fluorine-containing silane coupling agent: s solvent 7: 5: 1: 65; wherein the average particle size of the nano-scale fluoropolymer is 20-50 nm, and the average particle size of the nano-scale oxide is 1-30 nm;
the S solvent comprises ethylene glycol ethyl ether, benzophenone, isopropylene glycol and water, and the mass ratio of the ethylene glycol ethyl ether to the benzophenone is as follows: benzophenone: isopropyl glycol: and (3) water is 5-10: 1: 15-20: 3;
the nano-scale fluorine polymer is polytetrafluoroethylene and polychlorotrifluoroethylene according to a mass ratio of 3: 1, mixing; the nano-scale oxide is nano titanium dioxide, nano silicon dioxide and nano aluminum dioxide according to the mass ratio of 1: 2: 1, mixing; the fluorine-containing silane coupling agent is selected from heptadecafluorodecyltrimethoxysilane and dodecafluoroheptylpropyltrimethoxysilane according to the mass ratio of 1: 1 and mixing.
Examples of the experiments
Preparing novel nano materials according to the embodiments 1-6, preparing novel nano material coating films on the surfaces of electronic components made of the same materials by adopting a pulling method, and respectively performing an adhesion test, a water contact angle test, an oil contact angle test and an artificial accelerated aging resistance test;
the above tests were carried out on the novel nanomaterial with particular reference to the following:
1) and (3) adhesion test: performing an adhesion test according to GB/T9286-98, and grading the adhesion according to ISO 2409;
2) water contact angle, oil contact angle test: measuring a water contact angle and an oil contact angle by adopting an SDC-200S contact angle measuring instrument;
3) and (3) artificial accelerated aging resistance test: carrying out an artificial accelerated aging test according to GB/T1865-;
the test results of each test are shown in table 1:
TABLE 1 Performance indices of the novel nanomaterials prepared in the examples
| Adhesion force | Water contact angle | Oil contact angle | Artificially accelerated aging | |
| Example 1 | Level 0 | 145° | 120° | 6500h |
| Example 2 | Level 0 | 141° | 117° | 6200h |
| Example 3 | Level 0 | 142° | 117° | 6300h |
| Example 4 | Level 0 | 137° | 115° | 6100h |
| Example 5 | Level 0 | 134° | 112° | 6000h |
| Example 6 | Level 0 | 144° | 122° | 6400h |
And (4) test conclusion:
1) the prior coating material on the market is selected for carrying out the relevant tests, the adhesive force of the coating material is 1 grade and meets the ISO2409 standard, but the water contact angle of the coating material is 110 degrees, the oil contact angle of the coating material is 100 degrees, and the cracking phenomenon occurs when the aging time is about 2500 hours; therefore, compared with the existing materials, the novel nano materials prepared in the comparative examples 1-6 have stronger moisture-proof and anti-fouling performance, the service aging is longer, and compared with the existing coating materials, the moisture-proof and anti-fouling effect aging is 2-3 times longer.
2) Comparative examples 1, 2, and 3, which have the same reaction raw materials and different preparation method parameters, have certain influence on the performance index of the novel nanomaterial, have little influence on the water contact angle and the oil contact angle, but have certain influence on the aging time, and the novel nanomaterial prepared by the preparation method parameters of example 1 has the best performance.
3) Comparative examples 1, 4, 5, the preparation method parameters are the same, the reaction raw material ratios are different, the novel nanomaterial has certain influence on the performance index, the water contact angle and the oil contact angle, the moisture-proof and anti-fouling performance is reduced, the aging time is greatly influenced, and the novel nanomaterial prepared by the preparation method parameters of example 1 has optimal performance.
4) Comparative examples 1 and 6 have the same preparation method parameters, different reaction raw material components, and small influence on the performance indexes of the novel nano material, and have partial performance exceeding that of example 1, such as oil contact angle, but the comprehensive performance of the novel nano material is slightly lower than that of example 1.
Claims (10)
1. A novel moisture-proof and stain-resistant nano material applied to electronic components is characterized in that the novel moisture-proof and stain-resistant nano material is prepared by forming a mixed system by nano-scale fluorine polymer and nano-scale oxide and then carrying out surface modification;
the reaction raw materials are as follows: nano-scale fluoropolymer, nano-scale oxide, fluorine-containing silane coupling agent and S solvent; the reaction raw materials are nano-scale fluorine polymer according to mass ratio: nano-scale oxide: fluorine-containing silane coupling agent: and (5) an S solvent which is 5-9: 2-7: 1: 30-80 parts;
the S solvent comprises ethylene glycol ethyl ether, benzophenone, isopropylene glycol and water, and the mass ratio of the ethylene glycol ethyl ether to the benzophenone is as follows: benzophenone: isopropyl glycol: and (3) water is 5-10: 1: 15-20: 3.
2. the novel moisture-proof and stain-resistant nanomaterial applied to electronic components as claimed in claim 1, wherein the average particle size of the nanoscale fluoropolymer is 20-50 nm, and the average particle size of the nanoscale oxide is 1-30 nm.
3. The novel nanomaterial applied to electronic components and parts and having moisture resistance and stain resistance as claimed in claim 1, wherein the nanoscale fluoropolymer is one or more of polytetrafluoroethylene, polyvinylidene fluoride, polychlorotrifluoroethylene and polyvinyl fluoride.
4. The novel nanomaterial applied to electronic components and parts and having moisture resistance and stain resistance as claimed in claim 1, wherein the nanoscale oxide is one or more of nano titanium dioxide, nano silicon dioxide and nano aluminum dioxide.
5. The novel nanomaterial applied to electronic components and parts and having moisture resistance and stain resistance as claimed in claim 1, wherein the fluorine-containing silane coupling agent is selected from perfluoro long-chain silane coupling agents, and the carbon chain length of the perfluoro long-chain silane coupling agent is greater than or equal to 9.
6. The novel nanomaterial applied to electronic components and parts and having moisture resistance and stain resistance as claimed in claim 1, wherein the S solvent comprises, by mass: ethylene glycol ethyl ether: benzophenone: isopropyl glycol: and (3) water is 5-10: 1: 15-20: 3.
7. the novel nanomaterial applied to moisture prevention and pollution resistance of electronic components as claimed in claim 1, wherein the novel nanomaterial is used for surface treatment of electronic components.
8. The novel nanomaterial applied to electronic components and parts and having moisture resistance and pollution resistance as claimed in claim 1, wherein the preparation method of the novel nanomaterial comprises the following steps:
s1: pretreatment: soaking the nanoscale fluoropolymer and the nanoscale oxide in an alkaline S solvent for 5-15 min, neutralizing by using a neutralizing agent, cleaning and drying for later use, wherein the alkaline S solvent is an S solvent with the pH value of 9-11 adjusted by using an alkaline catalyst;
s2, particle activation, namely, putting the pretreated nano-scale fluoropolymer and nano-scale oxide into a plasma processor, vacuumizing to 30-450 Pa, introducing inert gas at the flow rate of 2-7L/h, and performing surface activation on the nano-scale fluoropolymer and the nano-scale oxide for 1-30 min under the power of 200-600W;
s2: preparation of a mixed system: adding the nano-scale fluoropolymer treated in the step S2 into a solvent S, and performing ultrasonic dispersion at 25-30 ℃ to obtain a nano-scale fluoropolymer solution for later use; heating the nano-scale fluoropolymer solution to 65-73 ℃ at the speed of 3-5 ℃/min, adding the nano-scale oxide into the nano-scale fluoropolymer solution, and stirring and mixing to obtain a mixed system solution;
s3: surface modification treatment: adding an alkaline catalyst into the mixed system solution to adjust the pH value of the mixed system solution to 7.5-8.5, then flatly paving the mixed system solution on a magnetic substrate, controlling the flatly paving depth to be 1-1.5 cm, and mixing a fluorine-containing silane coupling agent and an S solvent according to the mass ratio of 1: 10-15 are mixed and then dropped into a mixed system for multiple times, and the mixed solution is passed through60Performing Co source or electron beam irradiation treatment, reacting for multiple times at 75-85 ℃, then adding a neutralizing agent to enable the pH value of the mixed system solution to be 7, and filtering to obtain a novel nano material;
wherein the total mass of the S solvent in the steps S2 and S3 and the ratio of other substances are as follows: nanoscale fluoropolymers: nano-scale oxide: fluorine-containing silane coupling agent: and (5) an S solvent which is 5-9: 2-7: 1: 30-80, wherein the alkaline S solvent in the step S1 is not added into the mass ratio.
9. The novel nanomaterial applied to electronic components and parts and having moisture resistance and stain resistance as claimed in claim 8, wherein the alkaline catalyst is potassium carbonate, potassium hydroxide or sodium hydroxide; the neutralizer is triethanolamine and aminoacetic acid.
10. The novel nanomaterial applied to electronic components and parts and having moisture resistance and pollution resistance as claimed in claim 8, wherein the nanomaterial is characterized in that60The irradiation dose of Co source or electron beam irradiation is 300-1500 kGy.
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