CN110746879A - Modification method of electromagnetic shielding aging-resistant glass coating liquid - Google Patents
Modification method of electromagnetic shielding aging-resistant glass coating liquid Download PDFInfo
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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
- C09D183/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/007—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
- C03C17/009—Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
The invention discloses a method for modifying electromagnetic shielding aging-resistant glass coating liquid, which comprises the steps of adding epoxy resin added with lignin into dimethylbenzene, heating, stirring, fully dissolving, adding kaolin, stirring and refluxing at constant temperature, cooling, discharging, centrifuging, and washing with acetone to obtain lignin-epoxy resin functionalized modified kaolin; putting the graphene modified glass fiber into a plasma processing device, and carrying out modification processing in air under atmospheric pressure to obtain the plasma modified graphene modified glass fiber; heating glass resin in a water bath, adding polyimide containing hydroxyl, uniformly mixing, cooling to room temperature, adding anhydrous ethanol serving as a diluent, modified kaolin functionalized by lignin-epoxy resin and glass fiber modified by plasma modified graphene, mechanically stirring, adding a curing agent diethylenetriamine, uniformly mixing, and performing vacuum defoaming in an ice bath to obtain the glass coating liquid.
Description
Technical Field
The invention belongs to the field of glass deep processing, and particularly relates to a modification method of an electromagnetic shielding aging-resistant glass coating liquid.
Background
With the development of urbanization, more and more people move into cities, various buildings with comprehensive functions, such as large buildings, underground buildings, high-rise buildings, super high-rise buildings and the like, emerge in large numbers, new safety problems also occur when new buildings fall, and the problems of electromagnetic shielding and aging resistance of urban buildings become important. The electromagnetic fatigue and aging resistance of the glass are improved, the requirements of modern buildings are met, the research on high-performance electromagnetic shielding aging-resistant glass material systems and the research on the industrial production process of the magnetic fatigue aging-resistant glass are developed, and the method has important theoretical significance and realistic requirements.
However, most of commercially available glass has insufficient electromagnetic fatigue performance and aging resistance, and the lignin-epoxy resin functionalized modified kaolin is prepared by reacting the lignin-added epoxy resin with kaolin,
and finally, adding the lignin-epoxy resin functionalized modified kaolin and the plasma modified graphene modified glass fiber into glass resin to prepare the electromagnetic shielding aging-resistant glass coating liquid, so that the electromagnetic fatigue resistance and aging resistance of glass can be improved.
Disclosure of Invention
The invention aims to provide a method for modifying electromagnetic shielding aging-resistant glass coating liquid, aiming at solving the existing problems.
The invention is realized by the following technical scheme:
the method for modifying the electromagnetic shielding aging-resistant glass coating liquid comprises the following steps of:
(1) preparing lignin-epoxy resin functionalized modified kaolin:
adding 0.5-1 part of lignin-added epoxy resin into 2-4 parts of dimethylbenzene, heating and stirring at the temperature of 140-150 ℃ for full dissolution, adding 2.5-5 parts of kaolin, stirring and refluxing at constant temperature for 4-6h, cooling and discharging, centrifuging, and washing with acetone for 3-5 times to obtain lignin-epoxy resin functionalized modified kaolin;
mixing straw lignin and epoxy resin, pretreating at 100 ℃ to modify the epoxy resin, adding the lignin to inhibit the combustion of the epoxy resin, and after the high-temperature pretreatment, the lignin-modified epoxy resin has good thermal aging, thermal-oxidative aging and wet-thermal aging properties; through solvent method modification, epoxy resin molecules are grafted on the surface of kaolin, hydroxyl on the surface of the kaolin and epoxy resin generate ring-opening reaction, the epoxy resin is successfully grafted on the surface of the kaolin to obtain kaolin with organized surface, the compatibility between the kaolin and a glass resin matrix is better, the better dispersibility of the modified kaolin in the glass resin matrix and the epoxy resin long-chain molecules grafted on the surface of the kaolin play a role of a transition layer, and the lignin-epoxy resin functionalized modified kaolin prepared by a solvent method is adopted to enhance and improve the aging resistance of the glass coating liquid;
(2) plasma modification treatment of glass fibers:
placing 16-25 parts of graphene-modified glass fiber into a plasma treatment device, and carrying out modification treatment for 2-4min in air under atmospheric pressure to obtain plasma-modified graphene-modified glass fiber;
modifying the surface of glass fiber by using a silane coupling agent and bovine serum albumin as connecting agents, modifying the surface of the glass fiber by using an electrostatic molecular self-assembly technology, and reducing graphene oxide on the surface of the glass fiber by using a reducing agent to obtain graphene-modified glass fiber; the graphene oxide finishes the modification of large-area coverage rate on the glass fiber, the modified surface has a good wrinkle effect, the glass fiber modified by the graphene greatly improves the electromagnetic shielding performance of the glass coating liquid, the interface structure of the glass fiber is improved by the graphene modification, and the increase of the electromagnetic shielding performance mainly comes from the increase of the absorption loss in the composite material;
the glass fiber modified by the plasma modified graphene is adopted, the material can be efficiently processed in a short time through plasma surface modification, etching traces with different degrees appear on the surface of the glass fiber after the plasma processing, new oxygen-containing polar functional groups such as O-C = O are introduced, and the interface bonding strength of the glass fiber and the glass resin can be well improved through the interaction of the new oxygen-containing polar functional groups and the oxygen-containing polar functional groups; the change of the surface appearance of the glass fiber and the introduction of surface polar groups caused by the chemical etching action of the plasma are the leading processes in the surface activation treatment of the glass fiber and are the key for improving the electromagnetic shielding efficiency of the glass coating liquid;
(3) modified glass coating liquid:
heating 80-100 parts of glass resin in a water bath at 50-60 ℃, adding 1-2 parts of polyimide containing hydroxyl, uniformly mixing, cooling to room temperature, adding 12-15 parts of diluent absolute ethyl alcohol and the materials obtained in (1) and (2), mechanically stirring for 1-2h, adding 5-7 parts of curing agent diethylenetriamine, uniformly mixing, and performing vacuum defoaming in an ice bath for 25-35min to obtain the glass coating liquid;
the preparation method comprises the steps of performing toughening, reinforcing and modifying on a glass resin matrix by using polyimide containing hydroxyl, and then adding lignin-epoxy resin functionalized modified kaolin and plasma modified graphene modified glass fiber to prepare an oxidation-resistant glass coating liquid with excellent electromagnetic shielding performance;
further, in the step (1), 0.25-0.5 part of straw lignin is dried in vacuum at 80-85 ℃, then mixed with 5-10 parts of epoxy resin, and pre-reacted for 30-60min by heating at 100-110 ℃ to obtain the epoxy resin added with lignin.
Further, the method for modifying the glass fiber by the graphene in the step (2) comprises the following steps:
placing 16-25 parts of chopped glass fiber 1:15 treated by a coupling agent KH560 into acetone, carrying out ultrasonic cleaning for 20-30min, taking out, adding 10-20 parts of bovine serum albumin solution with the mass fraction of 1-2.5%, and carrying out modification treatment for 60-70min to obtain bovine serum albumin modified glass fiber;
adding 20-30 parts of graphene oxide dispersion liquid with pH of 4-5 and concentration of 1-2% into bovine serum albumin modified glass fiber, carrying out modification treatment for 65-75min, washing for 3-5 times, placing the obtained graphene oxide modified glass fiber on a bracket, placing mixed acid liquid of hydriodic acid and acetic acid with volume ratio of 1:2.5 in a water bath at 35-40 ℃, and allowing steam of the mixed acid liquid to pass through the position of the glass fiber to complete a reduction process to obtain the graphene modified glass fiber.
Further, the plasma treatment process in the step (2): the power frequency is 10-15kHz, the working voltage is 15-25kV, and the discharge power is 60-80W.
Further, in the step (3), 1-2 parts of polyamic acid is ground into powder, and is subjected to thermal imidization at the temperature of 150-.
Compared with the prior art, the invention has the following advantages:
(1) mixing straw lignin and epoxy resin, pretreating at 100 ℃ to modify the epoxy resin, adding the lignin to inhibit the combustion of the epoxy resin, and after the high-temperature pretreatment, the lignin-modified epoxy resin has good thermal aging, thermal-oxidative aging and wet-thermal aging properties; the modified kaolin is characterized in that epoxy resin molecules are grafted on the surface of kaolin through a solvent method, hydroxyl on the surface of the kaolin and the epoxy resin generate an open-loop reaction, the epoxy resin is successfully grafted on the surface of the kaolin to obtain the kaolin with organized surface, the kaolin has good compatibility with a glass resin matrix, the modified kaolin has good dispersibility in the glass resin matrix and the epoxy resin long-chain molecules grafted on the surface of the kaolin play a role of a transition layer, and the lignin-epoxy resin functionalized modified kaolin prepared through the solvent method is used for enhancing and improving the aging resistance of the glass coating liquid.
(2) Modifying the surface of glass fiber by using a silane coupling agent and bovine serum albumin as connecting agents, modifying the surface of the glass fiber by using an electrostatic molecular self-assembly technology, and reducing graphene oxide on the surface of the glass fiber by using a reducing agent to obtain graphene-modified glass fiber; the graphene oxide finishes the modification of large-area coverage rate on the glass fiber, the modified surface has a good wrinkle effect, the glass fiber modified by the graphene greatly improves the electromagnetic shielding performance of the glass coating liquid, the interface structure of the glass fiber is improved by the graphene modification, and the increase of the electromagnetic shielding performance mainly comes from the increase of the absorption loss in the composite material;
the glass fiber modified by the plasma modified graphene is adopted, the material can be efficiently processed in a short time through plasma surface modification, etching traces with different degrees appear on the surface of the glass fiber after the plasma processing, new oxygen-containing polar functional groups such as O-C = O are introduced, and the interface bonding strength of the glass fiber and the glass resin can be well improved through the interaction of the new oxygen-containing polar functional groups and the oxygen-containing polar functional groups; the change of the surface appearance of the glass fiber caused by the chemical etching effect of the plasma and the introduction of surface polar groups are the leading processes in the surface activation treatment of the glass fiber and are the key points for improving the electromagnetic shielding efficiency of the glass coating liquid.
(3) The preparation method comprises the steps of carrying out toughening, reinforcing and modifying on a glass resin matrix by using polyimide containing hydroxyl, and then adding lignin-epoxy resin functionalized modified kaolin and plasma modified graphene modified glass fiber to prepare the oxidation-resistant glass coating liquid with excellent electromagnetic shielding performance.
Detailed Description
Example 1
The method for modifying the electromagnetic shielding aging-resistant glass coating liquid is characterized by comprising the following steps of:
(1) preparing lignin-epoxy resin functionalized modified kaolin:
adding 0.5 part of epoxy resin added with lignin into 2 parts of dimethylbenzene, heating and stirring at 140 ℃ to fully dissolve, adding 2.5 parts of kaolin, stirring and refluxing at constant temperature, cooling and discharging, centrifuging, and washing with acetone for 3 times to obtain lignin-epoxy resin functionalized modified kaolin;
wherein, 0.25 part of straw lignin is dried in vacuum at 80 ℃, then mixed with 5 parts of epoxy resin, and pre-reacted for 60min by heating at 100 ℃ to obtain the epoxy resin added with lignin;
(2) plasma modification treatment of glass fibers:
placing 16 parts of graphene-modified glass fiber into a plasma treatment device, and carrying out modification treatment for 2min in air under atmospheric pressure to obtain plasma-modified graphene-modified glass fiber;
the method for modifying the glass fiber by the graphene comprises the following steps:
placing 16 parts of chopped glass fiber 1:15 treated by a coupling agent KH560 into acetone, carrying out ultrasonic cleaning for 20min, taking out, adding 10 parts of bovine serum albumin solution with the mass fraction of 1%, and carrying out modification treatment for 60min to obtain bovine serum albumin modified glass fiber;
adding 20 parts of graphene oxide dispersion liquid with the pH value of 4 and the concentration of 1% into bovine serum albumin modified glass fiber, carrying out modification treatment for 65min, washing for 3 times, placing the obtained graphene oxide modified glass fiber on a support, placing mixed acid liquid of hydriodic acid and acetic acid with the volume ratio of 1:2.5 into a water bath at 35 ℃, and allowing the steam of the mixed acid liquid to pass through the position of the glass fiber to complete a reduction process to obtain the graphene modified glass fiber;
plasma treatment process: the power frequency is 15kHz, the working voltage is 25kV, and the discharge power is 80W;
(3) modified glass coating liquid:
heating 80 parts of glass resin in a water bath at 50 ℃, adding 1 part of polyimide containing hydroxyl, uniformly mixing, cooling to room temperature, adding 12 parts of diluent absolute ethyl alcohol and the materials obtained in the steps (1) and (2), mechanically stirring for 1h, adding 5 parts of curing agent diethylenetriamine, uniformly mixing, and performing vacuum defoaming in an ice bath for 25min to obtain the glass coating liquid;
wherein, 1 part of polyamic acid is ground into powder, and is subjected to thermal imidization for 3h at the temperature of 150 ℃ and 60min at the temperature of 200 ℃ to obtain the polyimide containing hydroxyl.
Example 2
The method for modifying the electromagnetic shielding aging-resistant glass coating liquid is characterized by comprising the following steps of:
(1) preparing lignin-epoxy resin functionalized modified kaolin:
adding 1 part of epoxy resin added with lignin into 4 parts of dimethylbenzene, heating and stirring at 150 ℃ to fully dissolve, adding 5 parts of kaolin, stirring and refluxing for 4 hours at constant temperature, cooling and discharging, centrifuging, and washing for 5 times by using acetone to obtain lignin-epoxy resin functionalized modified kaolin;
wherein, 0.5 part of straw lignin is dried in vacuum at 85 ℃, then is mixed with 10 parts of epoxy resin, and is heated and pre-reacted for 30min at 110 ℃ to obtain the epoxy resin added with the lignin;
(2) plasma modification treatment of glass fibers:
putting 25 parts of graphene-modified glass fiber into a plasma treatment device, and performing modification treatment for 4min in air under atmospheric pressure to obtain plasma-modified graphene-modified glass fiber;
the method for modifying the glass fiber by the graphene comprises the following steps:
putting 25 parts of chopped glass fiber 1:15 treated by a coupling agent KH560 into acetone, carrying out ultrasonic cleaning for 30min, taking out, adding 20 parts of bovine serum albumin solution with the mass fraction of 2.5%, and carrying out modification treatment for 70min to obtain bovine serum albumin modified glass fiber;
adding 30 parts of graphene oxide dispersion liquid with pH of 5 and concentration of 2% into bovine serum albumin modified glass fiber, carrying out modification treatment for 75min, washing with water for 5 times, placing the obtained graphene oxide modified glass fiber on a support, placing mixed acid liquid of hydriodic acid and acetic acid with the volume ratio of 1:2.5 in water bath at 40 ℃, allowing the mixed acid liquid steam to pass through the position of the glass fiber, and finishing a reduction process to obtain the graphene modified glass fiber;
plasma treatment process: the power frequency is 10kHz, the working voltage is 15kV, and the discharge power is 60W;
(3) modified glass coating liquid:
heating 100 parts of glass resin in a water bath at 60 ℃, adding 2 parts of polyimide containing hydroxyl, uniformly mixing, cooling to room temperature, adding 15 parts of diluent absolute ethyl alcohol and the materials obtained in (1) and (2), mechanically stirring for 2 hours, adding 7 parts of curing agent diethylenetriamine, uniformly mixing, and performing vacuum defoaming for 35min in an ice bath to obtain the glass coating liquid;
wherein, 2 parts of polyamic acid is ground into powder, and is subjected to thermal imidization for 2 hours at 160 ℃ and 30 minutes at 210 ℃ to obtain the polyimide containing hydroxyl.
Comparative example 1
In this comparative example 1, compared with example 1, kaolin was not added in step (1), except that the process steps were the same.
Comparative example 2
In this comparative example 2, the graphene-modified glass fiber was not plasma-modified in step (2) as compared with example 2, except that the other steps were the same.
Blank glass resin without any modification treatment in control group
In order to compare the performances of the modified glass coating solutions prepared by the present invention, the modified glass coating solutions prepared by the methods of the above examples 1 and 2, comparative examples 1 and 2, and the blank glass resins without any modification treatment corresponding to the control groups were subjected to performance tests according to the industry standards, and the specific comparative data are shown in the following table 1:
and (3) thermal aging: placing the modified glass coating liquid and the blank glass resin in a vacuum drying oven for thermal aging, wherein the temperature of the vacuum drying oven is 150 ℃, the vacuum degree is-0.095, and observing the time for reducing the mechanical property;
thermal oxidation aging: placing the modified glass coating liquid and the blank glass resin in an electric heating blowing dry box at 150 DEG
Carrying out thermal-oxidative aging at the temperature of DEG C, and observing the time for reducing the mechanical property;
and (3) humid heat aging: placing the modified glass coating liquid and the blank glass resin in a constant-temperature constant-humidity test box for aging, wherein the temperature of the constant-temperature constant-humidity test box is 80 ℃, the relative humidity is 90%, and the time for reducing the mechanical property is observed;
electromagnetic shielding effectiveness: testing the electromagnetic shielding effectiveness of the X wave band on the modified glass coating liquid and the blank glass resin;
TABLE 1
| Item | Thermal ageing | Thermo-oxidative aging | Aging by moist heat | Electromagnetic shielding effectiveness |
| Example 1 | 287h | 288h | 900h | 20.4dB |
| Example 2 | 289h | 286h | 897h | 20.9dB |
| Comparative example 1 | 96h | 94h | 403h | 12.1dB |
| Comparative example 2 | 288h | 287h | 898h | 20.7dB |
| Control group | 47h | 48h | 102h | 2.1dB |
The modified glass coating liquid prepared by the method disclosed by the embodiment of the invention has excellent electromagnetic shielding performance and aging resistance; in comparative example 1, kaolin is not added, so that the heat aging time, the thermal oxidation aging time and the damp-heat aging time of the modified glass coating liquid are all reduced, but the aging resistance of the modified glass coating liquid is still better than that of a blank glass resin of a control group which is not subjected to any modification treatment; in comparative example 2, the graphene-modified glass fiber was not subjected to plasma modification, which results in that the electromagnetic shielding performance of the modified glass coating solution is reduced, but still better than that of the control group of blank glass resin without any modification treatment.
Claims (5)
1. The method for modifying the electromagnetic shielding aging-resistant glass coating liquid is characterized by comprising the following steps of:
(1) preparing lignin-epoxy resin functionalized modified kaolin:
adding 0.5-1 part of lignin-added epoxy resin into 2-4 parts of dimethylbenzene, heating and stirring at the temperature of 140-150 ℃ for full dissolution, adding 2.5-5 parts of kaolin, stirring and refluxing at constant temperature for 4-6h, cooling and discharging, centrifuging, and washing with acetone for 3-5 times to obtain lignin-epoxy resin functionalized modified kaolin;
(2) plasma modification treatment of glass fibers:
placing 16-25 parts of graphene-modified glass fiber into a plasma treatment device, and carrying out modification treatment for 2-4min in air under atmospheric pressure to obtain plasma-modified graphene-modified glass fiber;
(3) modified glass coating liquid:
heating 80-100 parts of glass resin in a water bath at 50-60 ℃, adding 1-2 parts of polyimide containing hydroxyl, uniformly mixing, cooling to room temperature, adding 12-15 parts of diluent absolute ethyl alcohol and the materials obtained in (1) and (2), mechanically stirring for 1-2h, adding 5-7 parts of curing agent diethylenetriamine, uniformly mixing, and performing vacuum defoaming in an ice bath for 25-35min to obtain the glass coating liquid.
2. The method for modifying electromagnetic shielding aging-resistant glass coating liquid as claimed in claim 1, wherein in the step (1), 0.25-0.5 part of straw lignin is vacuum-dried at 80-85 ℃, then mixed with 5-10 parts of epoxy resin, and pre-reacted for 30-60min under heating at 100-110 ℃ to obtain the epoxy resin added with lignin.
3. The method for modifying an electromagnetically-shielded aging-resistant glass coating liquid as claimed in claim 1, wherein the method for modifying glass fibers with graphene in the step (2) comprises the following steps:
placing 16-25 parts of chopped glass fiber 1:15 treated by a coupling agent KH560 into acetone, carrying out ultrasonic cleaning for 20-30min, taking out, adding 10-20 parts of bovine serum albumin solution with the mass fraction of 1-2.5%, and carrying out modification treatment for 60-70min to obtain bovine serum albumin modified glass fiber;
adding 20-30 parts of graphene oxide dispersion liquid with pH of 4-5 and concentration of 1-2% into bovine serum albumin modified glass fiber, carrying out modification treatment for 65-75min, washing for 3-5 times, placing the obtained graphene oxide modified glass fiber on a bracket, placing mixed acid liquid of hydriodic acid and acetic acid with volume ratio of 1:2.5 in a water bath at 35-40 ℃, and allowing steam of the mixed acid liquid to pass through the position of the glass fiber to complete a reduction process to obtain the graphene modified glass fiber.
4. The method for modifying an electromagnetically shielded aging-resistant glass coating liquid as claimed in claim 1, wherein the plasma treatment process in the step (2): the power frequency is 10-15kHz, the working voltage is 15-25kV, and the discharge power is 60-80W.
5. The method as claimed in claim 1, wherein in step (3), 1-2 parts of polyamic acid are ground into powder, and then thermally imidized at 160 ℃ for 2-3h and 210 ℃ for 30-60min at 150-.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055528A (en) * | 2020-09-15 | 2020-12-08 | 福州大学 | Preparation method of graphene-coated glass fiber reinforced plastic |
| CN113896924A (en) * | 2021-10-09 | 2022-01-07 | 佛山市佳世达薄膜科技有限公司 | Metal glass modified release film |
-
2019
- 2019-09-26 CN CN201910914915.6A patent/CN110746879A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055528A (en) * | 2020-09-15 | 2020-12-08 | 福州大学 | Preparation method of graphene-coated glass fiber reinforced plastic |
| CN113896924A (en) * | 2021-10-09 | 2022-01-07 | 佛山市佳世达薄膜科技有限公司 | Metal glass modified release film |
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Application publication date: 20200204 |