CN117603558A - Polyurethane resin composition for display screen packaging and preparation method thereof - Google Patents
Polyurethane resin composition for display screen packaging and preparation method thereof Download PDFInfo
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- CN117603558A CN117603558A CN202311403925.6A CN202311403925A CN117603558A CN 117603558 A CN117603558 A CN 117603558A CN 202311403925 A CN202311403925 A CN 202311403925A CN 117603558 A CN117603558 A CN 117603558A
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- 229920005749 polyurethane resin Polymers 0.000 title claims abstract description 56
- 239000011342 resin composition Substances 0.000 title claims abstract description 39
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims description 30
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 80
- 239000003365 glass fiber Substances 0.000 claims abstract description 67
- 239000000440 bentonite Substances 0.000 claims abstract description 57
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 57
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 57
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 18
- 229920001225 polyester resin Polymers 0.000 claims abstract description 18
- 239000004645 polyester resin Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 43
- 239000000243 solution Substances 0.000 claims description 42
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 24
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 24
- 238000000498 ball milling Methods 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 19
- 238000005406 washing Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 14
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims description 12
- 239000001509 sodium citrate Substances 0.000 claims description 12
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 12
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 7
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 7
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 7
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 7
- 229920001661 Chitosan Polymers 0.000 claims description 6
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- 239000008055 phosphate buffer solution Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 11
- 238000007654 immersion Methods 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 229960004275 glycolic acid Drugs 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229940043237 diethanolamine Drugs 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- 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
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a polyurethane resin composition for display screen packaging, which comprises the following raw materials in parts by weight: 20-25 parts of polyester resin, 10-15 parts of polyurethane resin, 45-50 parts of butanone, 6-10 parts of silane coupling agent KH560, 8-12 parts of lamellar bentonite modified whisker agent, 5-10 parts of glass fiber regulator and 2-5 parts of nano lanthanum oxide agent. The polyurethane resin composition for packaging the display screen takes polyester resin and polyurethane resin as base materials, the interfacial property of the system raw materials is optimized by adding the silane coupling agent KH560 as an interfacial regulator, and the bonding strength, the water vapor barrier property and the cold and hot shock resistance of the product are improved in a coordinated manner by mutually coordinating the lamellar bentonite modified whisker agent, the glass fiber regulator and the nanometer lanthanum oxide agent.
Description
Technical Field
The invention relates to the technical field of polyurethane resin compositions, in particular to a polyurethane resin composition for display screen packaging and a preparation method thereof.
Background
Early LED display screens were mainly used for text display, and along with the progress of manufacturing technology, electronic technology and information technology, the display capability and application level of LED display systems have been greatly developed. The full-color LED display screen is taken as a novel flat panel display device, and is pursued by the industry by virtue of the advantages of wide color gamut range, high brightness, capability of realizing large-area display and the like.
In the prior art, the resin composition is adopted to complete the display screen packaging process, the adhesive strength performance of the existing polyurethane resin composition packaging product is general, in order to improve the adhesive strength of the product, the water vapor barrier property is reduced, the coordinated improvement of the adhesive strength and the water vapor barrier property is difficult to realize, the thermal shock resistance of the product is reduced, the performance coordination improvement of the product is difficult to realize, and the service efficiency of the product is limited.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present invention is to provide a polyurethane resin composition for display screen packaging and a preparation method thereof, so as to solve the problems set forth in the background art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a polyurethane resin composition for display screen packaging, which comprises the following raw materials in parts by weight:
20-25 parts of polyester resin, 10-15 parts of polyurethane resin, 45-50 parts of butanone, 6-10 parts of silane coupling agent KH560, 8-12 parts of lamellar bentonite modified whisker agent, 5-10 parts of glass fiber regulator and 2-5 parts of nano lanthanum oxide agent.
Preferably, the polyurethane resin composition for display screen packaging comprises the following raw materials in parts by weight:
22.5 parts of polyester resin, 12.5 parts of polyurethane resin, 47.5 parts of butanone, 8 parts of silane coupling agent KH560, 10 parts of lamellar bentonite modified whisker agent, 7.5 parts of glass fiber regulator and 3.5 parts of nano lanthanum oxide agent.
Preferably, the preparation method of the lamellar bentonite modified whisker agent comprises the following steps:
s01: feeding bentonite into a heat treatment device at 300-320 ℃ for 5-10min, cooling to 145-155 ℃ at the speed of 2-5 ℃/min, and then cooling to 55 ℃ at the speed of 1-3 ℃/min;
s02: transferring the S01 product into yttrium nitrate solution for immersing treatment, wherein the immersing pressure is 5-10MPa, the immersing time is 10-20min, and after immersing, suction filtration and drying are carried out to obtain an immersed lamellar bentonite agent;
s03: adding 4-7 parts of silicon carbide whisker, 1-3 parts of sodium lignin sulfonate and 0.35-0.45 part of phosphate buffer solution with the pH value of 5.5 into 10-15 parts of chitosan solution with the mass fraction of 5%, and uniformly stirring to obtain silicon carbide whisker liquid;
s04: mixing the immersed lamellar bentonite agent and silicon carbide whisker liquid according to a weight ratio of 5:2, performing ball milling treatment at a ball milling rotating speed of 1000-1500r/min for 20-30min, washing with water and drying after ball milling is finished, and obtaining the lamellar bentonite modified whisker agent.
Preferably, the yttrium nitrate solution has a mass fraction of 4-8%.
Preferably, the preparation method of the glass fiber regulator comprises the following steps:
s11: mixing glass fiber and sodium citrate solution according to a weight ratio of 1:3, and feeding into a stirrer;
s12: then adding diethanolamine accounting for 2-5% of the total amount of the glass fibers, sodium dodecyl benzene sulfonate accounting for 1-3% of the total amount of the glass fibers and glycolic acid accounting for 1-5% of the total amount of the glass fibers, stirring for 10-20min at a rotating speed of 300-400r/min, and ending stirring;
s13: finally adding nano silica sol accounting for 4-7% of the total amount of the glass fibers, stirring for 30-40min at the rotating speed of 700-900r/min, washing with water and drying to obtain the glass fiber regulator.
Preferably, the mass fraction of the sodium citrate solution is 10-15%.
Preferably, the preparation method of the nano lanthanum oxide agent comprises the following steps:
the nanometer lanthanum oxide is irradiated in a proton irradiation box for 10-20min, after the irradiation is finished, the temperature is raised to 210-220 ℃ at the speed of 1-3 ℃/min, the heat treatment is carried out for 10-20min, then the nanometer lanthanum oxide is placed in a sodium silicate solution at the temperature of 5-10 ℃ for stirring and cooling to room temperature, and finally the nanometer lanthanum oxide agent is obtained after water washing and drying.
Preferably, the sodium silicate solution has a mass fraction of 14-18%.
Preferably, the irradiation power is 350-450W.
The invention also provides a preparation method of the polyurethane resin composition for display screen encapsulation, which comprises the following steps:
sequentially adding a lamellar bentonite modified whisker agent, a glass fiber regulator, a nano lanthanum oxide agent and a silane coupling agent KH560 into butanone, stirring and mixing uniformly, then adding polyester resin and polyurethane resin, stirring fully at 60-65 ℃, and finally cooling and filtering to obtain the polyurethane resin composition packaged by the display screen.
Compared with the prior art, the invention has the following beneficial effects:
the polyurethane resin composition for packaging the display screen takes polyester resin and polyurethane resin as base materials, the interfacial property of the system raw materials is optimized by adding the silane coupling agent KH560 as an interfacial regulator, the mutual coordination and the mutual synergistic effect of the lamellar bentonite modified whisker agent, the glass fiber regulator and the nano lanthanum oxide agent are realized, the bonding strength, the water vapor barrier property and the cold thermal shock resistance of the product are improved in a coordinated manner, the lamellar bentonite modified whisker agent takes lamellar bentonite as a base material, the lamellar structure is inserted into the system to play a fundamental role, the S01 thermal improvement is carried out, the lamellar spacing is optimized, the immersion improvement is carried out, the synergistic effect of the silicon carbide whisker liquid is matched, the overall performance effect of the system is improved, the added glass fiber regulator is subjected to multi-stage stirring and mixing treatment by diethanolamine, sodium dodecyl benzene sulfonate, hydroxyacetic acid and nano silica sol, the synergistic effect of the glass fiber of the system is further enhanced, and the water vapor barrier property and the cold thermal shock resistance of the system are further improved by adding the nano lanthanum oxide agent.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The polyurethane resin composition for display screen packaging of the embodiment comprises the following raw materials in parts by weight:
20-25 parts of polyester resin, 10-15 parts of polyurethane resin, 45-50 parts of butanone, 6-10 parts of silane coupling agent KH560, 8-12 parts of lamellar bentonite modified whisker agent, 5-10 parts of glass fiber regulator and 2-5 parts of nano lanthanum oxide agent.
The polyurethane resin composition for display screen packaging of the embodiment comprises the following raw materials in parts by weight:
22.5 parts of polyester resin, 12.5 parts of polyurethane resin, 47.5 parts of butanone, 8 parts of silane coupling agent KH560, 10 parts of lamellar bentonite modified whisker agent, 7.5 parts of glass fiber regulator and 3.5 parts of nano lanthanum oxide agent.
The preparation method of the lamellar bentonite modified whisker agent comprises the following steps:
s01: feeding bentonite into a heat treatment device at 300-320 ℃ for 5-10min, cooling to 145-155 ℃ at the speed of 2-5 ℃/min, and then cooling to 55 ℃ at the speed of 1-3 ℃/min;
s02: transferring the S01 product into yttrium nitrate solution for immersing treatment, wherein the immersing pressure is 5-10MPa, the immersing time is 10-20min, and after immersing, suction filtration and drying are carried out to obtain an immersed lamellar bentonite agent;
s03: adding 4-7 parts of silicon carbide whisker, 1-3 parts of sodium lignin sulfonate and 0.35-0.45 part of phosphate buffer solution with the pH value of 5.5 into 10-15 parts of chitosan solution with the mass fraction of 5%, and uniformly stirring to obtain silicon carbide whisker liquid;
s04: mixing the immersed lamellar bentonite agent and silicon carbide whisker liquid according to a weight ratio of 5:2, performing ball milling treatment at a ball milling rotating speed of 1000-1500r/min for 20-30min, washing with water and drying after ball milling is finished, and obtaining the lamellar bentonite modified whisker agent.
The mass fraction of the yttrium nitrate solution in the embodiment is 4-8%.
The preparation method of the glass fiber regulator in the embodiment comprises the following steps:
s11: mixing glass fiber and sodium citrate solution according to a weight ratio of 1:3, and feeding into a stirrer;
s12: then adding diethanolamine accounting for 2-5% of the total amount of the glass fibers, sodium dodecyl benzene sulfonate accounting for 1-3% of the total amount of the glass fibers and glycolic acid accounting for 1-5% of the total amount of the glass fibers, stirring for 10-20min at a rotating speed of 300-400r/min, and ending stirring;
s13: finally adding nano silica sol accounting for 4-7% of the total amount of the glass fibers, stirring for 30-40min at the rotating speed of 700-900r/min, washing with water and drying to obtain the glass fiber regulator.
The mass fraction of the sodium citrate solution of the embodiment is 10-15%.
The preparation method of the nano lanthanum oxide agent in the embodiment comprises the following steps:
the nanometer lanthanum oxide is irradiated in a proton irradiation box for 10-20min, after the irradiation is finished, the temperature is raised to 210-220 ℃ at the speed of 1-3 ℃/min, the heat treatment is carried out for 10-20min, then the nanometer lanthanum oxide is placed in a sodium silicate solution at the temperature of 5-10 ℃ for stirring and cooling to room temperature, and finally the nanometer lanthanum oxide agent is obtained after water washing and drying.
The mass fraction of the sodium silicate solution of this example is 14-18%.
The irradiation power of this example was 350-450W.
The preparation method of the polyurethane resin composition for display screen packaging of the embodiment comprises the following steps:
sequentially adding a lamellar bentonite modified whisker agent, a glass fiber regulator, a nano lanthanum oxide agent and a silane coupling agent KH560 into butanone, stirring and mixing uniformly, then adding polyester resin and polyurethane resin, stirring fully at 60-65 ℃, and finally cooling and filtering to obtain the polyurethane resin composition packaged by the display screen.
Example 1.
The polyurethane resin composition for display screen packaging of the embodiment comprises the following raw materials in parts by weight:
20 parts of polyester resin, 10 parts of polyurethane resin, 45 parts of butanone, 6 parts of silane coupling agent KH560, 8 parts of lamellar bentonite modified whisker agent, 5 parts of glass fiber regulator and 2 parts of nano lanthanum oxide agent.
The preparation method of the lamellar bentonite modified whisker agent comprises the following steps:
s01: feeding bentonite into a reactor for heat treatment at 300 ℃ for 5min, cooling to 145 ℃ at a rate of 2 ℃/min, and then cooling to 55 ℃ at a rate of 1 ℃/min;
s02: s01, transferring the product into yttrium nitrate solution for immersion treatment, wherein the immersion pressure is 5MPa, the immersion time is 10min, and the immersed bentonite preparation in a sheet is obtained after the immersion is finished, and carrying out suction filtration and drying;
s03: adding 4 parts of silicon carbide whisker, 1 part of sodium lignin sulfonate and 0.35 part of phosphoric acid buffer solution with the ph value of 5.5 into 10 parts of chitosan solution with the mass fraction of 5%, and uniformly stirring to obtain silicon carbide whisker liquid;
s04: mixing the immersed lamellar bentonite agent and silicon carbide whisker liquid according to a weight ratio of 5:2, performing ball milling treatment at a ball milling rotating speed of 1000r/min for 20min, performing water washing and drying after ball milling is finished, and obtaining the lamellar bentonite modified whisker agent.
The mass fraction of the yttrium nitrate solution of this example was 4%.
The preparation method of the glass fiber regulator in the embodiment comprises the following steps:
s11: mixing glass fiber and sodium citrate solution according to a weight ratio of 1:3, and feeding into a stirrer;
s12: then adding diethanolamine accounting for 2 percent of the total amount of the glass fibers, sodium dodecyl benzene sulfonate accounting for 1 percent of the total amount of the glass fibers and glycolic acid accounting for 1 percent of the total amount of the glass fibers, stirring for 10-20min at a rotating speed of 300r/min, and ending the stirring;
s13: finally adding nano silica sol accounting for 4% of the total amount of the glass fibers, stirring for 30min at a rotating speed of 700r/min, washing with water and drying to obtain the glass fiber regulator.
The mass fraction of the sodium citrate solution of this example was 10%.
The preparation method of the nano lanthanum oxide agent in the embodiment comprises the following steps:
and (3) radiating the nano lanthanum oxide in a proton radiation box for 10min, heating to 210 ℃ at a speed of 1 ℃/min after the radiation is finished, performing heat treatment for 10min, then placing the nano lanthanum oxide in a sodium silicate solution at 5 ℃ for stirring and cooling to room temperature, and finally washing and drying the nano lanthanum oxide to obtain the nano lanthanum oxide agent.
The mass fraction of the sodium silicate solution of this example was 14%.
The irradiation power of this example was 350W.
The preparation method of the polyurethane resin composition for display screen packaging of the embodiment comprises the following steps:
sequentially adding a lamellar bentonite modified whisker agent, a glass fiber regulator, a nano lanthanum oxide agent and a silane coupling agent KH560 into butanone, stirring and mixing uniformly, then adding polyester resin and polyurethane resin, stirring fully at 60 ℃, and finally cooling and filtering to obtain the polyurethane resin composition packaged by the display screen.
Example 2.
The polyurethane resin composition for display screen packaging of the embodiment comprises the following raw materials in parts by weight:
25 parts of polyester resin, 15 parts of polyurethane resin, 50 parts of butanone, 10 parts of silane coupling agent KH560, 12 parts of lamellar bentonite modified whisker agent, 10 parts of glass fiber regulator and 5 parts of nano lanthanum oxide agent.
The preparation method of the lamellar bentonite modified whisker agent comprises the following steps:
s01: feeding bentonite into a heating furnace for heat treatment at 320 ℃ for 10min, cooling to 155 ℃ at a speed of 5 ℃/min, and then cooling to 55 ℃ at a speed of 3 ℃/min;
s02: s01, transferring the product into yttrium nitrate solution for immersion treatment, wherein the immersion pressure is 10MPa, the immersion time is 20min, and the immersed bentonite preparation in a sheet is obtained after the immersion is finished, and carrying out suction filtration and drying;
s03: adding 7 parts of silicon carbide whisker, 3 parts of sodium lignin sulfonate and 0.45 part of phosphoric acid buffer solution with the ph value of 5.5 into 15 parts of chitosan solution with the mass fraction of 5%, and uniformly stirring to obtain silicon carbide whisker liquid;
s04: mixing the immersed lamellar bentonite agent and silicon carbide whisker liquid according to a weight ratio of 5:2, performing ball milling treatment, wherein the ball milling rotating speed is 1500r/min, the ball milling time is 30min, and performing water washing and drying after ball milling is finished to obtain the lamellar bentonite modified whisker agent.
The mass fraction of the yttrium nitrate solution of this example was 8%.
The preparation method of the glass fiber regulator in the embodiment comprises the following steps:
s11: mixing glass fiber and sodium citrate solution according to a weight ratio of 1:3, and feeding into a stirrer;
s12: then adding diethanolamine accounting for 5 percent of the total amount of the glass fibers, sodium dodecyl benzene sulfonate accounting for 3 percent of the total amount of the glass fibers and glycolic acid accounting for 5 percent of the total amount of the glass fibers, stirring for 20 minutes at a rotating speed of 400r/min, and ending the stirring;
s13: finally adding nano silica sol accounting for 7 percent of the total amount of the glass fibers, stirring for 40 minutes at the rotating speed of 900r/min, washing with water and drying to obtain the glass fiber regulator.
The mass fraction of the sodium citrate solution of this example was 15%.
The preparation method of the nano lanthanum oxide agent in the embodiment comprises the following steps:
and (3) radiating the nano lanthanum oxide in a proton radiation box for 20min, heating to 220 ℃ at a speed of 3 ℃/min after the radiation is finished, performing heat treatment for 20min, then placing the nano lanthanum oxide in a sodium silicate solution at 10 ℃ for stirring and cooling to room temperature, and finally washing and drying the nano lanthanum oxide to obtain the nano lanthanum oxide agent.
The mass fraction of the sodium silicate solution of this example was 18%.
The irradiation power of this example was 450W.
The preparation method of the polyurethane resin composition for display screen packaging of the embodiment comprises the following steps:
sequentially adding a lamellar bentonite modified whisker agent, a glass fiber regulator, a nano lanthanum oxide agent and a silane coupling agent KH560 into butanone, stirring and mixing uniformly, then adding polyester resin and polyurethane resin, stirring fully at 65 ℃, and finally cooling and filtering to obtain the polyurethane resin composition packaged by the display screen.
Example 3.
A polyurethane resin composition for display screen packaging of this embodiment comprises the following components by weight
22.5 parts of polyester resin, 12.5 parts of polyurethane resin, 47.5 parts of butanone, 8 parts of silane coupling agent KH560, 10 parts of lamellar bentonite modified whisker agent, 7.5 parts of glass fiber regulator and 3.5 parts of nano lanthanum oxide agent.
The preparation method of the lamellar bentonite modified whisker agent comprises the following steps:
s01: feeding bentonite into a reactor at 310 ℃ for heat treatment for 7.5min, cooling to 150 ℃ at a speed of 3.5 ℃/min, and then cooling to 55 ℃ at a speed of 2 ℃/min;
s02: transferring the S01 product into yttrium nitrate solution for immersing treatment, wherein the immersing pressure is 7.5MPa, the immersing time is 15min, and the immersed bentonite agent in the sheet is obtained after the immersing is finished, and carrying out suction filtration and drying;
s03: adding 5.5 parts of silicon carbide whisker, 2 parts of sodium lignin sulfonate and 0.40 part of phosphoric acid buffer solution with the pH value of 5.5 into 12.5 parts of chitosan solution with the mass fraction of 5%, and uniformly stirring to obtain silicon carbide whisker liquid;
s04: mixing the immersed lamellar bentonite agent and silicon carbide whisker liquid according to a weight ratio of 5:2, performing ball milling treatment, wherein the ball milling rotating speed is 1250r/min, the ball milling time is 25min, and performing water washing and drying after ball milling is finished to obtain the lamellar bentonite modified whisker agent.
The mass fraction of the yttrium nitrate solution of this example was 6%.
The preparation method of the glass fiber regulator in the embodiment comprises the following steps:
s11: mixing glass fiber and sodium citrate solution according to a weight ratio of 1:3, and feeding into a stirrer;
s12: then adding 3.5% of diethanolamine, 2% of sodium dodecyl benzene sulfonate and 3% of glycolic acid into the glass fiber, stirring for 15min at a rotating speed of 350r/min, and ending the stirring;
s13: finally adding nano silica sol accounting for 5.5 percent of the total amount of the glass fibers, stirring for 35min at the rotating speed of 800r/min, washing with water and drying to obtain the glass fiber regulator.
The mass fraction of the sodium citrate solution of this example was 12.5%.
The preparation method of the nano lanthanum oxide agent in the embodiment comprises the following steps:
and (3) irradiating the nano lanthanum oxide in a proton irradiation box for 15min, heating to 215 ℃ at a speed of 2 ℃/min, performing heat treatment for 10-20min, then placing in a sodium silicate solution at 7.5 ℃ for stirring and cooling to room temperature, and finally washing and drying to obtain the nano lanthanum oxide agent.
The mass fraction of the sodium silicate solution of this example was 16%.
The irradiation power of this example was 400W.
The preparation method of the polyurethane resin composition for display screen packaging of the embodiment comprises the following steps:
sequentially adding a lamellar bentonite modified whisker agent, a glass fiber regulator, a nano lanthanum oxide agent and a silane coupling agent KH560 into butanone, stirring and mixing uniformly, then adding polyester resin and polyurethane resin, stirring fully at 62.5 ℃, and finally cooling and filtering to obtain the polyurethane resin composition packaged by the display screen.
Comparative example 1.
The difference from example 3 is that no lamellar bentonite modifying whisker agent is added.
Comparative example 2.
The difference from example 3 is that the S02 step was not used in the lamellar bentonite modified whisker agent.
Comparative example 3.
The difference from example 3 is that the lamellar bentonite modified whisker agent is not treated with silicon carbide whisker liquid.
Comparative example 4.
Unlike example 3, silicon carbide whiskers were not added to the preparation of the silicon carbide whisker liquid.
Comparative example 5.
The difference from example 3 is that no glass fiber regulator was added.
Comparative example 6.
The difference from example 3 is that the treatment in step S12 was not performed in the glass fiber regulator.
Comparative example 7.
The difference from example 3 is that the treatment in step S13 was not performed in the glass fiber regulator.
Comparative example 8.
The difference from example 3 is that no nano lanthanum oxide agent was added.
The performance tests of the products of examples 1-3 and comparative examples 1-8 were as follows:
from examples 1-3 and comparative examples 1-8, it can be seen that the bonding strength, the water vapor transmittance and the cold and hot shock cycle time performance of the invention in example 3 can be improved in a coordinated manner, from comparative examples 1-8, the performances of the product have obvious degradation tendencies without adding any one of the lamellar bentonite modification whisker agent, the glass fiber regulator and the nano lanthanum oxide agent, the performances of the product are most obvious by adopting the cooperation of the three, the effects of the product are most obvious by adopting the cooperation of the three, the lamellar bentonite modification whisker agent is not treated by adopting the S02 step, the lamellar bentonite modification whisker agent is not treated by adopting the silicon carbide whisker liquid, the silicon carbide whisker is not added in the preparation of the silicon carbide whisker liquid, the glass fiber regulator is not treated by adopting the S12 step, and the glass fiber regulator is not treated by adopting the S13 step, and the performances of the product are most obvious by adopting the lamellar bentonite modification whisker and the glass fiber regulator obtained by the method.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The polyurethane resin composition for display screen encapsulation is characterized by comprising the following raw materials in parts by weight:
20-25 parts of polyester resin, 10-15 parts of polyurethane resin, 45-50 parts of butanone, 6-10 parts of silane coupling agent KH560, 8-12 parts of lamellar bentonite modified whisker agent, 5-10 parts of glass fiber regulator and 2-5 parts of nano lanthanum oxide agent.
2. The polyurethane resin composition for display screen packaging according to claim 1, wherein the polyurethane resin composition for display screen packaging comprises the following raw materials in parts by weight:
22.5 parts of polyester resin, 12.5 parts of polyurethane resin, 47.5 parts of butanone, 8 parts of silane coupling agent KH560, 10 parts of lamellar bentonite modified whisker agent, 7.5 parts of glass fiber regulator and 3.5 parts of nano lanthanum oxide agent.
3. The polyurethane resin composition for display screen packaging according to claim 1, wherein the preparation method of the lamellar bentonite modified whisker agent is as follows:
s01: feeding bentonite into a heat treatment device at 300-320 ℃ for 5-10min, cooling to 145-155 ℃ at the speed of 2-5 ℃/min, and then cooling to 55 ℃ at the speed of 1-3 ℃/min;
s02: transferring the S01 product into yttrium nitrate solution for immersing treatment, wherein the immersing pressure is 5-10MPa, the immersing time is 10-20min, and after immersing, suction filtration and drying are carried out to obtain an immersed lamellar bentonite agent;
s03: adding 4-7 parts of silicon carbide whisker, 1-3 parts of sodium lignin sulfonate and 0.35-0.45 part of phosphate buffer solution with the pH value of 5.5 into 10-15 parts of chitosan solution with the mass fraction of 5%, and uniformly stirring to obtain silicon carbide whisker liquid;
s04: mixing the immersed lamellar bentonite agent and silicon carbide whisker liquid according to a weight ratio of 5:2, performing ball milling treatment at a ball milling rotating speed of 1000-1500r/min for 20-30min, washing with water and drying after ball milling is finished, and obtaining the lamellar bentonite modified whisker agent.
4. A polyurethane resin composition for display screen packaging according to claim 3, wherein the yttrium nitrate solution has a mass fraction of 4-8%.
5. A polyurethane resin composition for display screen packaging according to claim 3, wherein the glass fiber regulator is prepared by the following steps:
s11: mixing glass fiber and sodium citrate solution according to a weight ratio of 1:3, and feeding into a stirrer;
s12: then adding diethanolamine accounting for 2-5% of the total amount of the glass fibers, sodium dodecyl benzene sulfonate accounting for 1-3% of the total amount of the glass fibers and glycolic acid accounting for 1-5% of the total amount of the glass fibers, stirring for 10-20min at a rotating speed of 300-400r/min, and ending stirring;
s13: finally adding nano silica sol accounting for 4-7% of the total amount of the glass fibers, stirring for 30-40min at the rotating speed of 700-900r/min, washing with water and drying to obtain the glass fiber regulator.
6. The polyurethane resin composition for display screen packaging according to claim 5, wherein the mass fraction of the sodium citrate solution is 10-15%.
7. The polyurethane resin composition for display screen packaging of claim 5, wherein the preparation method of the nano lanthanum oxide agent is as follows:
the nanometer lanthanum oxide is irradiated in a proton irradiation box for 10-20min, after the irradiation is finished, the temperature is raised to 210-220 ℃ at the speed of 1-3 ℃/min, the heat treatment is carried out for 10-20min, then the nanometer lanthanum oxide is placed in a sodium silicate solution at the temperature of 5-10 ℃ for stirring and cooling to room temperature, and finally the nanometer lanthanum oxide agent is obtained after water washing and drying.
8. The polyurethane resin composition for display screen packaging according to claim 7, wherein the sodium silicate solution has a mass fraction of 14 to 18%.
9. A polyurethane resin composition for display packaging according to claim 7, wherein the irradiation power is 350 to 450W.
10. A method for producing a polyurethane resin composition for display screen packaging according to any one of claims 1 to 9, comprising the steps of:
sequentially adding a lamellar bentonite modified whisker agent, a glass fiber regulator, a nano lanthanum oxide agent and a silane coupling agent KH560 into butanone, stirring and mixing uniformly, then adding polyester resin and polyurethane resin, stirring fully at 60-65 ℃, and finally cooling and filtering to obtain the polyurethane resin composition packaged by the display screen.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117801637A (en) * | 2024-02-29 | 2024-04-02 | 佛山市大为科技有限公司 | Lithium battery coating composition and method thereof |
| CN118006077A (en) * | 2024-03-12 | 2024-05-10 | 浙江一马新材料有限公司 | Special material for automobile with photochromic ABS and preparation method thereof |
| CN118206913A (en) * | 2024-03-01 | 2024-06-18 | 深圳市豪龙新材料技术有限公司 | Modified graphene phosphorus-free sealing agent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117801637A (en) * | 2024-02-29 | 2024-04-02 | 佛山市大为科技有限公司 | Lithium battery coating composition and method thereof |
| CN117801637B (en) * | 2024-02-29 | 2024-05-28 | 佛山市大为科技有限公司 | Lithium battery coating composition and preparation method thereof |
| CN118206913A (en) * | 2024-03-01 | 2024-06-18 | 深圳市豪龙新材料技术有限公司 | Modified graphene phosphorus-free sealing agent and preparation method thereof |
| CN118006077A (en) * | 2024-03-12 | 2024-05-10 | 浙江一马新材料有限公司 | Special material for automobile with photochromic ABS and preparation method thereof |
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