CN115368860A - Graphene modified packaging adhesive for display and preparation method thereof - Google Patents
Graphene modified packaging adhesive for display and preparation method thereof Download PDFInfo
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- CN115368860A CN115368860A CN202211198221.5A CN202211198221A CN115368860A CN 115368860 A CN115368860 A CN 115368860A CN 202211198221 A CN202211198221 A CN 202211198221A CN 115368860 A CN115368860 A CN 115368860A
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- 239000000853 adhesive Substances 0.000 title claims abstract description 59
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 59
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 47
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 150000001412 amines Chemical class 0.000 claims abstract description 18
- 239000003822 epoxy resin Substances 0.000 claims abstract description 15
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 15
- 239000003085 diluting agent Substances 0.000 claims abstract description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 11
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- -1 alicyclic amine Chemical class 0.000 claims description 7
- 150000004982 aromatic amines Chemical class 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 239000004843 novolac epoxy resin Substances 0.000 claims description 7
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical group CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 2
- 239000004842 bisphenol F epoxy resin Substances 0.000 claims description 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 2
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000001038 titanium pigment Substances 0.000 claims description 2
- 239000008393 encapsulating agent Substances 0.000 claims 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000035699 permeability Effects 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 18
- 238000012360 testing method Methods 0.000 description 13
- 238000005538 encapsulation Methods 0.000 description 11
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 10
- 230000008859 change Effects 0.000 description 8
- 229920006335 epoxy glue Polymers 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000001588 bifunctional effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013080 microcrystalline material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a graphene modified packaging adhesive for display and a preparation method thereof, wherein the graphene modified packaging adhesive comprises the following raw materials in parts by weight: 70-80 parts of epoxy resin, 5-10 parts of reactive diluent, 1-3 parts of silane coupling agent, 0.1-0.3 part of defoaming agent, 15-20 parts of modified amine, 1-2 parts of titanium dioxide and 10-20 parts of graphene. The packaging adhesive has the characteristics of long normal-temperature operable time, quick heating and curing and low water permeability.
Description
Technical Field
The invention relates to the field of display screens, is mainly applied to the display screen direction of electronic paper books, and particularly relates to graphene modified packaging adhesive for display and a preparation method thereof.
Background
The screen of the electronic paper book does not emit light, content is displayed by reflecting light rays or an auxiliary light source through a natural light source, and the electronic paper book has the characteristics of eye protection, power saving and the like. The screen of the electronic paper book mainly comprises glass, an FPL (electronic ink film), an IC (chip), an FPC (flexible printed circuit) and a glass plate. The electronic ink film is greatly influenced by damp and heat, and the damage rate of the screen can be effectively reduced by sealing the electronic ink film on the glass through glue, so that the display effect of the display screen is directly influenced by the quality of the packaging material. The epoxy resin is a bonding material with high crosslinking density, has good waterproof performance after being cured, and is a current main packaging material. In practical application, the glue needs to have longer operable time so as to meet the requirements of the production process of customers; meanwhile, the glue is cured by heating at medium temperature, so that the curing time of the glue can be shortened, and the production process flow is shortened. However, the viscosity of the normal temperature reaction type epoxy resin changes rapidly, and there is a contradiction between the operable time and the curing time, which is a major problem of the current packaging adhesive. And the moisture and heat resistance of the packaging material is influenced by the excessively high water permeability of the existing glue.
Disclosure of Invention
The invention provides a display graphene modified packaging adhesive and a preparation method thereof, aiming at solving the problems of quick viscosity change, short operable time, slow heating and curing and high water permeability of the existing packaging adhesive at normal temperature, and aiming at ensuring that the adhesive has long operable time at normal temperature, quick heating and curing and low water permeability through formula optimization.
The invention adopts the following technical scheme for realizing the purpose:
the graphene modified packaging adhesive for the display comprises the following raw materials in parts by weight: 70 to 80 portions of epoxy resin, 5 to 10 portions of reactive diluent, 1 to 3 portions of silane coupling agent, 0.1 to 0.3 portion of defoaming agent, 15 to 20 portions of modified amine and 1 to 2 portions of titanium pigment.
Furthermore, the raw materials of the packaging adhesive also comprise 10-20 parts of graphene, and the addition of the graphene can improve the water-resisting property of the adhesive.
Further, the epoxy resin is one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, novolac epoxy resin and high-temperature resistant epoxy resin.
Further, the reactive diluent is a monofunctional epoxy glycidyl ether.
Further, the silane coupling agent is gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane or N- (2-aminoethyl) -3-aminopropyltrimethoxysilane.
Further, the defoaming agent is organic silicon high polymer, such as BYK-530 and BYK-066N.
Further, the modified amine is alicyclic amine, aromatic amine and an accelerator according to a mass ratio of 25:5:0.5 to 1.
Further, the titanium dioxide is anatase type titanium dioxide or rutile type titanium dioxide.
As shown in fig. 1, the preparation method of the display graphene modified packaging adhesive provided by the invention comprises the following steps:
step 1, mixing epoxy resin, an active diluent, a defoaming agent, a silane coupling agent, titanium dioxide and graphene according to a ratio, stirring at a high speed until the mixture is uniformly dispersed (the rotating speed is 3000r/min and the time is 20-30 min), and grinding the mixture by using a three-roll mill until the fineness is not more than 15 microns to obtain a material A;
and 2, after the material A is cooled to room temperature, adding modified amine, uniformly stirring at a low speed (the rotating speed is 400r/min, the time is 5-10 min), and defoaming in vacuum to obtain the graphene modified packaging adhesive for display.
Compared with the prior art, the invention has the beneficial effects that:
1. the packaging adhesive of the invention: the epoxy glue is a single-component epoxy glue, and the reaction rate of the glue can be slowed down by storing the epoxy glue at the low temperature of-40 ℃; after thawing, the viscosity of the glue changes slowly at normal temperature, so that the glue has a long operation period and can meet the requirements of production procedures; the glue can be quickly cured at medium temperature (70-80 ℃), so that the process flow can be shortened.
2. The packaging adhesive can also be added with graphene, so that the water-proof performance of the adhesive is enhanced.
3. The packaging adhesive disclosed by the invention passes a packaging simulation test and is excellent in humidity resistance and heat resistance.
4. The packaging adhesive disclosed by the invention is excellent in bonding performance, stable in performance, free of substances harmful to human bodies and environment-friendly.
Drawings
FIG. 1 is a flow chart showing a process for preparing graphene modified packaging adhesive according to the present invention.
FIG. 2 shows the change of viscosity of the sealing compound according to each example of the present invention within 4 hours after thawing at room temperature (25 ℃) for 1 hour.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. The following disclosure is merely exemplary and illustrative of the inventive concept, and those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
The graphene used in the following examples can be prepared according to the method disclosed in patent CN 104609413B, or can be purchased directly from co-fertilizer microcrystalline material science and technology limited. The remaining materials used in the following examples are all commercially available.
Example 1
The encapsulation adhesive is prepared according to the following steps:
step 1, mixing 65 parts of bisphenol A type epoxy resin (CAS number: 61788-97-4), 15 parts of novolac epoxy resin (CAS number: 9003-36-5), 8 parts of reactive diluent (CAS number: 106-92-3), 2 parts of silane coupling agent (CAS number: 2530-83-8), 0.2 part of defoaming agent (BYK-530) and 1 part of titanium dioxide (CAS number: 13463-67-7), dispersing at a high speed of 3000r/min for 20-30 minutes, grinding in a three-roll machine until the fineness is not more than 15 micrometers, and obtaining a material A for later use.
And 3, after the material A is cooled to room temperature, adding the modified amine obtained in the step 2, uniformly stirring at a low speed (the rotating speed is 400r/min, the time is 5-10 min), and defoaming in vacuum to obtain the display packaging adhesive, wherein the display packaging adhesive is stored at the low temperature of-40 ℃.
Example 2
The encapsulation adhesive is prepared according to the following steps:
step 1, mixing 65 parts of bisphenol A type epoxy resin (CAS number: 61788-97-4), 15 parts of novolac epoxy resin (CAS number: 9003-36-5), 8 parts of reactive diluent (CAS number: 106-92-3), 2 parts of silane coupling agent (CAS number: 2530-83-8), 0.2 part of defoaming agent (BYK-530) and 1 part of titanium dioxide (CAS number: 13463-67-7), dispersing at a high speed of 3000r/min for 20-30 minutes, grinding in a three-roll machine until the fineness is not more than 15 micrometers, and obtaining a material A for later use.
And 3, after the material A is cooled to room temperature, adding the modified amine obtained in the step 2, stirring uniformly at a low speed (the rotating speed is 400r/min, and the time is 5-10 min), and defoaming in vacuum to obtain the display packaging adhesive, and storing at the low temperature of-40 ℃.
Example 3
The encapsulation adhesive is prepared according to the following steps:
step 1, mixing 65 parts of bisphenol A type epoxy resin (CAS number: 61788-97-4), 15 parts of novolac epoxy resin (CAS number: 9003-36-5), 8 parts of reactive diluent (CAS number: 106-92-3), 2 parts of silane coupling agent (CAS number: 2530-83-8), 0.2 part of defoaming agent (BYK-530), 1 part of titanium dioxide (CAS number: 13463-67-7) and 20 parts of graphene, dispersing at a high speed for 20-30 minutes at a rotating speed of 3000r/min, then grinding in a three-roll machine until the fineness is not more than 15 micrometers, and obtaining a material A for later use.
And 3, after the material A is cooled to room temperature, adding the modified amine obtained in the step 2, uniformly stirring at a low speed (the rotating speed is 400r/min, the time is 5-10 min), and defoaming in vacuum to obtain the graphene modified packaging adhesive for display, and storing at the low temperature of-40 ℃.
Comparative example 1
The comparative example prepared the encapsulation adhesive as follows:
step 1, mixing 65 parts of bisphenol A type epoxy resin (CAS number: 61788-97-4), 15 parts of novolac epoxy resin (CAS number: 9003-36-5), 8 parts of reactive diluent (CAS number: 2425-79-8, which is bifunctional diluent), 2 parts of silane coupling agent (CAS number: 2530-83-8), 0.2 part of antifoaming agent (BYK-530) and 1 part of titanium dioxide (CAS number: 13463-67-7), dispersing at a high speed of 3000r/min for 20-30 minutes, then grinding in a three-roll machine to the fineness of not more than 15 micrometers, and obtaining a material A for later use.
And 3, after the material A is cooled to room temperature, adding the modified amine obtained in the step 2, uniformly stirring at a low speed (the rotating speed is 400r/min, the time is 5-10 min), and defoaming in vacuum to obtain the display packaging adhesive, wherein the display packaging adhesive is stored at the low temperature of-40 ℃.
Comparative example 2
The encapsulation adhesive is prepared according to the following steps:
step 1, mixing 65 parts of bisphenol A type epoxy resin (CAS number: 61788-97-4), 15 parts of novolac epoxy resin (CAS number: 9003-36-5), 8 parts of reactive diluent (CAS number: 106-92-3), 2 parts of silane coupling agent (CAS number: 2530-83-8), 0.2 part of defoaming agent (BYK-530) and 1 part of titanium dioxide (CAS number: 13463-67-7), dispersing at a high speed of 3000r/min for 20-30 minutes, grinding in a three-roll machine until the fineness is not more than 15 micrometers, and obtaining a material A for later use.
And 3, after the material A is cooled to room temperature, adding the modified amine obtained in the step 2, uniformly stirring at a low speed (the rotating speed is 400r/min, the time is 5-10 min), and defoaming in vacuum to obtain the display packaging adhesive, wherein the display packaging adhesive is stored at the low temperature of-40 ℃.
Comparative example 3
And the imported display screen is encapsulated by epoxy glue.
Comparative example 4
Some domestic display screen uses epoxy encapsulation glue.
The following performance tests were performed on the encapsulation pastes of the examples:
the encapsulation adhesive prepared in each example was taken out of a freezer at-40 c, and the change in viscosity of the adhesive was measured after thawing for 1 hour at room temperature, and the measurement results are shown in fig. 2.
After thawing at normal temperature, 10g of glue is respectively weighed in a disposable cup, the curing time of the glue is tested in an oven at 70 ℃, and the test results are shown in table 1.
The glue is made into a sheet with the thickness of 0.25 micron, the sheet is packaged at the bottle mouth of a bottle filled with water, the sheet is placed in a constant temperature and humidity circulation box (the temperature is 50 ℃ and the humidity is 100%) for 24 hours, the water permeability of the glue is tested, and the test results are shown in table 2.
Testing the sealing performance of the glue through a packaging simulation experiment: the test paper with the moisture easy to discolor is packaged by an epoxy glue by a glue dispenser, and the test paper is placed in a constant temperature and humidity circulation box to test the sealing performance (the temperature is 60 ℃, and the humidity is 90%) after the glue is completely cured (7 days).
Table 1 curing time at 70 ℃ for the encapsulation adhesive prepared in each example
| Test item | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 |
| Curing time (70 ℃ C.) | 50 minutes | 45 minutes | 50 minutes | 50 minutes | 60 minutes | 50 minutes | 60 minutes |
As can be seen from table 1: comparing the curing time of the glue at 70 ℃ in the example 1, the example 2 and the comparative example 2, the curing time of the glue at 70 ℃ can be shortened by increasing the using amount of the accelerator; compared with the commercially available imported packaging adhesive and domestic packaging adhesive, the packaging adhesive provided by the invention has faster curing time at 70 ℃.
TABLE 2 Permeability to water (temperature 50 ℃ C., humidity 100%) of the encapsulating adhesive prepared in each example for 24 hours
As can be seen from table 2: the water permeability of the encapsulation adhesive of example 1, example 2, comparative example 1 and comparative example 2 is 30g/cm in 24 hours 2 * The water permeability of the imported packaging adhesive and the domestic packaging adhesive of comparative example 4 and comparative example 5 is 30g/cm after 24 hours 2 * More than 24 h; embodiment 3 is the packaging adhesive modified by adding graphene, and the addition of graphene enhances the water-resisting property of the adhesive, so that the water permeability is obviously reduced to reach 30g/cm 2 * Within 24 h.
As can be seen from fig. 2: the viscosity change curves of the example 1, the example 2 and the comparative example 2 are basically consistent, and the viscosity change at normal temperature is not influenced by the increase of the using amount of the accelerator. The epoxy encapsulation adhesive prepared by the bifunctional epoxy diluent in the comparative example 1 has quick viscosity change; the viscosity change curve of the imported epoxy encapsulating adhesive of the comparative example 3 is basically consistent with the viscosity change of the encapsulating adhesive of the invention; the domestic epoxy packaging glue of the comparative example 4 has obvious increase of the viscosity and short operable time.
The packaging simulation test result shows that: in the conditions of 60 ℃ of temperature and 90% of humidity of the test paper in the embodiment 1, the embodiment 2 and the embodiment 3, the color of the internally packaged test paper is not changed after 1000 hours (the packaging effect is poor, water vapor enters the internally packaged test paper, and the internally packaged test paper turns red).
In summary, the present invention provides a method for displaying a packaging adhesive modified with graphene: by selecting the epoxy diluent with a monofunctional group, the operable time of the glue at normal temperature can be effectively prolonged; the curing time of the glue at 70 ℃ can be adjusted by adjusting the dosage of the accelerator; compared with the domestic packaging adhesive, the epoxy packaging adhesive provided by the invention has longer operable time and shorter curing time at 70 ℃; compared with the imported packaging adhesive, the epoxy packaging adhesive provided by the invention can be cured in shorter time at 70 ℃ within the same operable time; by introducing the graphene, the packaging adhesive provided by the invention has more excellent water-resisting property.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make corresponding adjustments and improvements without departing from the principle of the present invention, and these adjustments and improvements should also be considered as the protection scope of the present invention.
Claims (9)
1. The graphene modified packaging adhesive for the display is characterized by comprising the following raw materials in parts by weight: 70 to 80 portions of epoxy resin, 5 to 10 portions of reactive diluent, 1 to 3 portions of silane coupling agent, 0.1 to 0.3 portion of defoaming agent, 15 to 20 portions of modified amine and 1 to 2 portions of titanium pigment.
2. The graphene-modified encapsulant for displays of claim 1, wherein: the raw material of the packaging adhesive also comprises 10-20 parts of graphene.
3. The graphene-modified encapsulant for displays of claim 1, wherein: the epoxy resin is one or more of bisphenol A epoxy resin, bisphenol F epoxy resin, novolac epoxy resin and high-temperature-resistant epoxy resin.
4. The graphene-modified encapsulant for displays of claim 1, wherein: the reactive diluent is monofunctional epoxy glycidyl ether.
5. The graphene-modified encapsulant for displays of claim 1, wherein: the silane coupling agent is gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane or N- (2-aminoethyl) -3-aminopropyltrimethoxysilane.
6. The graphene-modified encapsulant for displays of claim 1, wherein: the defoaming agent is organic silicon high polymer.
7. The graphene-modified encapsulant for displays of claim 1, wherein: the modified amine is alicyclic amine, aromatic amine and an accelerator according to a mass ratio of 25:5:0.5 to 1.
8. The graphene modified encapsulant for display of claim 1, wherein: the titanium dioxide is anatase titanium dioxide or rutile titanium dioxide.
9. The preparation method of the graphene modified packaging adhesive for display use according to any one of claims 1 to 8, characterized by comprising the following steps:
step 1, mixing the raw materials except the modified amine according to a ratio, stirring at a high speed until the raw materials are uniformly dispersed, and grinding the mixture by using a three-roll machine until the fineness of the mixture is not more than 15 micrometers to obtain a material A;
and 2, after the material A is cooled to room temperature, adding modified amine, uniformly stirring at a low speed, and defoaming in vacuum to obtain the graphene modified packaging adhesive for display.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686713A (en) * | 2017-09-25 | 2018-02-13 | 常州市沃兰特电子有限公司 | A kind of epoxide resin conductive adhesive for Electronic Packaging |
| CN109294501A (en) * | 2018-09-30 | 2019-02-01 | 广西驰胜农业科技有限公司 | A kind of graphite oxide alkenyl waterproof insulation glue |
| CN110699026A (en) * | 2019-10-22 | 2020-01-17 | 亿铖达（深圳）新材料有限公司 | Flexible epoxy pouring sealant |
| CN111303813A (en) * | 2020-04-22 | 2020-06-19 | 中国工程物理研究院电子工程研究所 | Room temperature curing pouring sealant for precise electronic components and use method thereof |
-
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- 2022-09-29 CN CN202211198221.5A patent/CN115368860B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686713A (en) * | 2017-09-25 | 2018-02-13 | 常州市沃兰特电子有限公司 | A kind of epoxide resin conductive adhesive for Electronic Packaging |
| CN109294501A (en) * | 2018-09-30 | 2019-02-01 | 广西驰胜农业科技有限公司 | A kind of graphite oxide alkenyl waterproof insulation glue |
| CN110699026A (en) * | 2019-10-22 | 2020-01-17 | 亿铖达（深圳）新材料有限公司 | Flexible epoxy pouring sealant |
| CN111303813A (en) * | 2020-04-22 | 2020-06-19 | 中国工程物理研究院电子工程研究所 | Room temperature curing pouring sealant for precise electronic components and use method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李玉龙: "《高分子材料助剂》", 化学工业出版社 * |
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