CN116355386A - Polyurethane resin composition and application thereof in display screen packaging - Google Patents
Polyurethane resin composition and application thereof in display screen packaging Download PDFInfo
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- CN116355386A CN116355386A CN202310626128.8A CN202310626128A CN116355386A CN 116355386 A CN116355386 A CN 116355386A CN 202310626128 A CN202310626128 A CN 202310626128A CN 116355386 A CN116355386 A CN 116355386A
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- polyurethane resin
- attapulgite
- agent
- resin composition
- hydroxyapatite
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- 229920005749 polyurethane resin Polymers 0.000 title claims abstract description 102
- 239000011342 resin composition Substances 0.000 title claims abstract description 42
- 238000004806 packaging method and process Methods 0.000 title claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 129
- 150000001875 compounds Chemical class 0.000 claims abstract description 84
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims abstract description 84
- 229960000892 attapulgite Drugs 0.000 claims abstract description 82
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 82
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims abstract description 81
- 239000003607 modifier Substances 0.000 claims abstract description 67
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 48
- 239000000243 solution Substances 0.000 claims description 46
- 238000000498 ball milling Methods 0.000 claims description 41
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 26
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 26
- 238000002360 preparation method Methods 0.000 claims description 25
- 239000007864 aqueous solution Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 17
- 229920001661 Chitosan Polymers 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 13
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 13
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 12
- 230000003750 conditioning effect Effects 0.000 claims description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 7
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229920013822 aminosilicone Polymers 0.000 claims description 7
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 6
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 6
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 claims description 6
- 125000003118 aryl group Chemical group 0.000 claims description 6
- SNAMIIGIIUQQSP-UHFFFAOYSA-N bis(6-methylheptyl) hydrogen phosphate Chemical compound CC(C)CCCCCOP(O)(=O)OCCCCCC(C)C SNAMIIGIIUQQSP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 6
- 229920000768 polyamine Polymers 0.000 claims description 6
- 235000010413 sodium alginate Nutrition 0.000 claims description 6
- 229940005550 sodium alginate Drugs 0.000 claims description 6
- 239000000661 sodium alginate Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000006258 conductive agent Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- -1 hydroxyapatite compound Chemical class 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002195 synergetic effect Effects 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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- 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
- C08K2201/001—Conductive additives
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a polyurethane resin composition, which comprises a curing agent, an attapulgite coordinated hydroxyapatite modified compound agent, a polyurethane resin modifier and silver powder as raw materials; the mass ratio of the curing agent to the attapulgite coordinated hydroxyapatite modified compound agent to the polyurethane resin modifier to the silver powder is (0.25-0.35): (3-6): (8-12):3. According to the polyurethane resin composition, the attapulgite is matched with the hydroxyapatite modified compound agent and the polyurethane resin modifier, silver powder is adopted as a conductive agent, so that the conductive performance is enhanced, the attapulgite is matched with the hydroxyapatite modified compound agent and the polyurethane resin modifier to cooperate, the light transmission performance and the conductive performance of a product can be improved, and the performance effect of the product is improved in a coordinated manner.
Description
Technical Field
The invention relates to the technical field of resin compositions, in particular to a polyurethane resin composition and application thereof in display screen packaging.
Background
The display screen is beginning to be applied to mass life as a brand new display medium. 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.
The existing resin composition has poor conductive performance and poor light transmittance in display screen packaging, is difficult to coordinate and improve, has low illumination stability under the condition of ultraviolet illumination, and further limits the service efficiency of the product.
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 and an application thereof in a display screen package, 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, which comprises a curing agent, an attapulgite coordinated hydroxyapatite modified compound agent, a polyurethane resin modifier and silver powder as raw materials; the mass ratio of the curing agent to the attapulgite coordinated hydroxyapatite modified compound agent to the polyurethane resin modifier to the silver powder is (0.25-0.35): (3-6): (8-12):3.
Preferably, the preparation method of the attapulgite coordinated hydroxyapatite modified compound agent comprises the following steps:
s11: feeding hydroxyapatite into 4-5 times of hydrochloric acid solution with the mass fraction of 5%, then adding cerium nitrate solution with the mass fraction of 5-10% of the total amount of the hydroxyapatite and sodium dodecyl sulfate with the mass fraction of 1-5% of the total amount of the hydroxyapatite, and stirring fully to obtain a hydroxyapatite preparation;
s12: preheating attapulgite at 70-80 ℃ for 10-20min, then preserving heat, uniformly stirring in a conditioner with the total amount of 3-5 times of the attapulgite, washing with water and drying to obtain an attapulgite modifier;
s13: adding a hydroxyapatite modifier accounting for 5-10% of the total weight of the attapulgite modifier into the attapulgite modifier, and sending into a ball mill for ball milling for 1-2h at a ball milling rotating speed of 1000-1500r/min, and obtaining a ball milling compound agent after ball milling;
s14: the ball-milling compound agent is sent into chitosan water solution with the weight being 3-5 times that of the ball-milling compound agent, then silane coupling agent water solution with the weight being 5-10% of the total weight of the ball-milling compound agent is added, the mixture is stirred fully, washed and dried, and the attapulgite coordinated hydroxyapatite modified compound agent is obtained.
Preferably, the cerium nitrate solution has a mass fraction of 0.55-0.75%.
Preferably, the mass fraction of the chitosan aqueous solution is 6-8%; the mass fraction of the aqueous solution of the silane coupling agent is 4-8%.
Preferably, the conditioning agent comprises the following raw materials in parts by weight: 1-3 parts of maleic anhydride solution, 10-15 parts of ethanol solvent, 2-5 parts of sodium alginate aqueous solution with mass fraction of 5% and 0.2-0.3 part of itaconic acid.
Preferably, the mass fraction of the maleic anhydride solution is 1-3%.
Preferably, the preparation method of the polyurethane resin modifier comprises the following steps:
s101: adding 3-5 parts of bis (dioctyl-oxy-pyrophosphato) ethylene titanate into 20-25 parts of polyurethane resin, then adding 1-5 parts of amino silicone oil and 1-3 parts of tween 60, and uniformly stirring to obtain a polyurethane resin additive;
s102: adding 1-3 parts of diisooctyl phosphate and 2-5 parts of dodecylphenol into 10-20 parts of ethanol solvent, uniformly stirring, then adding 0.55-0.75 part of divinylbenzene, and fully stirring to obtain a compound agent;
s103: and adding the polyurethane resin additive into the compound agent according to the weight ratio of 1:5, and continuously stirring the mixture sufficiently to obtain the polyurethane resin modifier.
Preferably, the curing agent is an aromatic polyamine curing agent.
Preferably, the polyurethane resin composition is prepared by the following steps: uniformly stirring the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier, then adding silver powder and a curing agent, and continuously and fully stirring to obtain the polyurethane resin composition.
The invention also provides application of the polyurethane resin composition in display screen packaging.
Compared with the prior art, the invention has the following beneficial effects:
according to the polyurethane resin composition, the attapulgite is matched with the hydroxyapatite modified compound agent and the polyurethane resin modifier, silver powder is adopted as a conductive agent, so that the conductive performance is enhanced, the attapulgite is matched with the hydroxyapatite modified compound agent and the polyurethane resin modifier to cooperate, the light transmission performance and the conductive performance of a product can be improved, and the performance effect of the product is improved in a coordinated manner; the stability of the product under the illumination condition is improved; the attapulgite coordinated hydroxyapatite modified compound agent is prepared by compounding hydroxyapatite with hydrochloric acid solution, cerium nitrate solution and sodium dodecyl sulfate to form a hydroxyapatite compound agent, the attapulgite is treated with the conditioner and then ball-milled and modified with the hydroxyapatite compound agent, finally, the attapulgite coordinated hydroxyapatite modified compound agent is prepared with chitosan aqueous solution and silane coupling agent aqueous solution to form the attapulgite coordinated hydroxyapatite modified compound agent, the interfacial effect of the product can be optimized, the performance of the product is simultaneously coordinated and improved, the polyurethane resin modifier is matched with bis (dioctyl-oxy-pyrophosphoric acid ester group) ethylene titanate, polyurethane resin, amino silicone oil and tween 60, and the polyurethane resin modifier prepared by the compound agent is matched with the attapulgite coordinated hydroxyapatite modified compound agent to realize synergistic effect, so that the light transmission and electric conduction performance of the product are improved in a coordinated manner.
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 raw materials of the polyurethane resin composition comprise a curing agent, an attapulgite coordinated hydroxyapatite modified compound agent, a polyurethane resin modifier and silver powder; the mass ratio of the curing agent to the attapulgite coordinated hydroxyapatite modified compound agent to the polyurethane resin modifier to the silver powder is (0.25-0.35): (3-6): (8-12):3.
The preparation method of the attapulgite coordinated hydroxyapatite modified compound agent in the embodiment comprises the following steps:
s11: feeding hydroxyapatite into 4-5 times of hydrochloric acid solution with the mass fraction of 5%, then adding cerium nitrate solution with the mass fraction of 5-10% of the total amount of the hydroxyapatite and sodium dodecyl sulfate with the mass fraction of 1-5% of the total amount of the hydroxyapatite, and stirring fully to obtain a hydroxyapatite preparation;
s12: preheating attapulgite at 70-80 ℃ for 10-20min, then preserving heat, uniformly stirring in a conditioner with the total amount of 3-5 times of the attapulgite, washing with water and drying to obtain an attapulgite modifier;
s13: adding a hydroxyapatite modifier accounting for 5-10% of the total weight of the attapulgite modifier into the attapulgite modifier, and sending into a ball mill for ball milling for 1-2h at a ball milling rotating speed of 1000-1500r/min, and obtaining a ball milling compound agent after ball milling;
s14: the ball-milling compound agent is sent into chitosan water solution with the weight being 3-5 times that of the ball-milling compound agent, then silane coupling agent water solution with the weight being 5-10% of the total weight of the ball-milling compound agent is added, the mixture is stirred fully, washed and dried, and the attapulgite coordinated hydroxyapatite modified compound agent is obtained.
The mass fraction of the cerium nitrate solution in the embodiment is 0.55-0.75%.
The mass fraction of the chitosan aqueous solution in the embodiment is 6-8%; the mass fraction of the aqueous solution of the silane coupling agent is 4-8%.
The conditioning agent of the embodiment comprises the following raw materials in parts by weight: 1-3 parts of maleic anhydride solution, 10-15 parts of ethanol solvent, 2-5 parts of sodium alginate aqueous solution with mass fraction of 5% and 0.2-0.3 part of itaconic acid.
The mass fraction of the maleic anhydride solution in this example is 1-3%.
The preparation method of the polyurethane resin modifier of the embodiment comprises the following steps:
s101: adding 3-5 parts of bis (dioctyl-oxy-pyrophosphato) ethylene titanate into 20-25 parts of polyurethane resin, then adding 1-5 parts of amino silicone oil and 1-3 parts of tween 60, and uniformly stirring to obtain a polyurethane resin additive;
s102: adding 1-3 parts of diisooctyl phosphate and 2-5 parts of dodecylphenol into 10-20 parts of ethanol solvent, uniformly stirring, then adding 0.55-0.75 part of divinylbenzene, and fully stirring to obtain a compound agent;
s103: and adding the polyurethane resin additive into the compound agent according to the weight ratio of 1:5, and continuously stirring the mixture sufficiently to obtain the polyurethane resin modifier.
The curing agent of this example is an aromatic polyamine curing agent.
The preparation method of the polyurethane resin composition of the present embodiment is: uniformly stirring the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier, then adding silver powder and a curing agent, and continuously and fully stirring to obtain the polyurethane resin composition.
The polyurethane resin composition is applied to display screen packaging.
Example 1
The raw materials of the polyurethane resin composition comprise a curing agent, an attapulgite coordinated hydroxyapatite modified compound agent, a polyurethane resin modifier and silver powder; the mass ratio of the curing agent to the attapulgite coordinated hydroxyapatite modified compound agent to the polyurethane resin modifier to the silver powder is 0.25:3:8:3.
The preparation method of the attapulgite coordinated hydroxyapatite modified compound agent in the embodiment comprises the following steps:
s11: feeding hydroxyapatite into 4 times of hydrochloric acid solution with the mass fraction of 5%, then adding cerium nitrate solution with the total amount of 5% of the hydroxyapatite and sodium dodecyl sulfate with the total amount of 1% of the hydroxyapatite, and fully stirring to obtain a hydroxyapatite preparation agent;
s12: preheating attapulgite for 10min at 70 ℃, then preserving heat, uniformly stirring in a conditioner with the total amount of 3 times of the attapulgite, washing with water, and drying to obtain an attapulgite modifier;
s13: adding a hydroxyapatite modifier accounting for 5% of the total amount of the attapulgite modifier into the attapulgite modifier, and sending the mixture into a ball mill for ball milling for 1h at a ball milling rotating speed of 1000r/min, and obtaining a ball milling compound agent after ball milling;
s14: the ball-milling compound agent is sent into chitosan water solution which is 3 times of the ball-milling compound agent, then silane coupling agent water solution which is 5 percent of the total amount of the ball-milling compound agent is added, the mixture is stirred fully, washed and dried, and the attapulgite coordinated hydroxyapatite modified compound agent is obtained.
The mass fraction of the cerium nitrate solution of this example was 0.55%.
The mass fraction of the chitosan aqueous solution in the embodiment is 6%; the mass fraction of the aqueous solution of the silane coupling agent is 4%.
The conditioning agent of the embodiment comprises the following raw materials in parts by weight: 1 part of maleic anhydride solution, 10 parts of ethanol solvent, 2 parts of sodium alginate aqueous solution with mass fraction of 5% and 0.2 part of itaconic acid.
The mass fraction of the maleic anhydride solution in this example is 1-3%.
The preparation method of the polyurethane resin modifier of the embodiment comprises the following steps:
s101: adding 3 parts of bis (dioctyl-oxy-pyrophosphato) ethylene titanate into 20 parts of polyurethane resin, then adding 1 part of amino silicone oil and 1 part of tween 60, and uniformly stirring to obtain a polyurethane resin additive;
s102: adding 1 part of diisooctyl phosphate and 2 parts of dodecylphenol into 10 parts of ethanol solvent, uniformly stirring, then adding 0.55 part of divinylbenzene, and fully stirring to obtain a compound agent;
s103: and adding the polyurethane resin additive into the compound agent according to the weight ratio of 1:5, and continuously stirring the mixture sufficiently to obtain the polyurethane resin modifier.
The curing agent of this example is an aromatic polyamine curing agent.
The preparation method of the polyurethane resin composition of the present embodiment is: uniformly stirring the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier, then adding silver powder and a curing agent, and continuously and fully stirring to obtain the polyurethane resin composition.
The polyurethane resin composition is applied to display screen packaging.
Example 2.
The raw materials of the polyurethane resin composition comprise a curing agent, an attapulgite coordinated hydroxyapatite modified compound agent, a polyurethane resin modifier and silver powder; the mass ratio of the curing agent to the attapulgite coordinated hydroxyapatite modified compound agent to the polyurethane resin modifier to the silver powder is 0.35:6:12:3.
The preparation method of the attapulgite coordinated hydroxyapatite modified compound agent in the embodiment comprises the following steps:
s11: feeding hydroxyapatite into 5 times of hydrochloric acid solution with the mass fraction of 5%, then adding cerium nitrate solution with the total amount of 10% of the hydroxyapatite and sodium dodecyl sulfate with the total amount of 5% of the hydroxyapatite, and stirring fully to obtain a hydroxyapatite preparation agent;
s12: preheating attapulgite at 80 ℃ for 20min, then preserving heat, uniformly stirring in a conditioner with the total weight of 5 times of the attapulgite, washing with water, and drying to obtain an attapulgite modifier;
s13: adding a hydroxyapatite modifier accounting for 10% of the total amount of the attapulgite modifier into the attapulgite modifier, and sending the mixture into a ball mill for ball milling for 2 hours at a ball milling rotating speed of 1500r/min, and obtaining a ball milling compound agent after ball milling;
s14: the ball-milling compound agent is sent into chitosan water solution which is 5 times of the ball-milling compound agent, then silane coupling agent water solution which is 10 percent of the total amount of the ball-milling compound agent is added, the mixture is stirred fully, washed and dried, and the attapulgite coordinated hydroxyapatite modified compound agent is obtained.
The mass fraction of the cerium nitrate solution of this example was 0.75%.
The mass fraction of the chitosan aqueous solution of the embodiment is 8%; the mass fraction of the aqueous solution of the silane coupling agent is 8%.
The conditioning agent of the embodiment comprises the following raw materials in parts by weight: 3 parts of maleic anhydride solution, 15 parts of ethanol solvent, 5 parts of sodium alginate aqueous solution with the mass fraction of 5% and 0.3 part of itaconic acid.
The mass fraction of the maleic anhydride solution in this example was 3%.
The preparation method of the polyurethane resin modifier of the embodiment comprises the following steps:
s101: adding 5 parts of bis (dioctyl-oxy-pyrophosphato) ethylene titanate into 25 parts of polyurethane resin, then adding 5 parts of amino silicone oil and 3 parts of tween 60, and uniformly stirring to obtain a polyurethane resin additive;
s102: adding 3 parts of diisooctyl phosphate and 5 parts of dodecylphenol into 20 parts of ethanol solvent, uniformly stirring, then adding 0.75 part of divinylbenzene, and fully stirring to obtain a compound agent;
s103: and adding the polyurethane resin additive into the compound agent according to the weight ratio of 1:5, and continuously stirring the mixture sufficiently to obtain the polyurethane resin modifier.
The curing agent of this example is an aromatic polyamine curing agent.
The preparation method of the polyurethane resin composition of the present embodiment is: uniformly stirring the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier, then adding silver powder and a curing agent, and continuously and fully stirring to obtain the polyurethane resin composition.
The polyurethane resin composition is applied to display screen packaging.
Example 3.
The raw materials of the polyurethane resin composition comprise a curing agent, an attapulgite coordinated hydroxyapatite modified compound agent, a polyurethane resin modifier and silver powder; the mass ratio of the curing agent to the attapulgite coordinated hydroxyapatite modified compound agent to the polyurethane resin modifier to the silver powder is 0.3:4.5:10:3.
The preparation method of the attapulgite coordinated hydroxyapatite modified compound agent in the embodiment comprises the following steps:
s11: feeding hydroxyapatite into 4.5 times of hydrochloric acid solution with the mass fraction of 5%, then adding cerium nitrate solution with the total amount of the hydroxyapatite being 7.5% and sodium dodecyl sulfate with the total amount of the hydroxyapatite being 3%, and fully stirring to obtain a hydroxyapatite preparation;
s12: preheating attapulgite for 15min at 75 ℃, then preserving heat, uniformly stirring in a conditioning agent with the total amount of 4 times of the attapulgite, washing with water, and drying to obtain an attapulgite modifier;
s13: adding a hydroxyapatite modifier accounting for 7.5% of the total amount of the attapulgite modifier into the attapulgite modifier, and sending the mixture into a ball mill for ball milling for 1.5 hours at a ball milling rotating speed of 1250r/min, and obtaining a ball milling compound agent after ball milling;
s14: the ball-milling compound agent is sent into 4 times of chitosan water solution, then silane coupling agent water solution accounting for 7.5 percent of the total amount of the ball-milling compound agent is added, the mixture is stirred fully, washed and dried, and the attapulgite coordinated hydroxyapatite modified compound agent is obtained.
The mass fraction of the cerium nitrate solution of this example was 0.60%.
The mass fraction of the chitosan aqueous solution of the embodiment is 7%; the mass fraction of the aqueous solution of the silane coupling agent is 6%.
The conditioning agent of the embodiment comprises the following raw materials in parts by weight: 2 parts of maleic anhydride solution, 12.5 parts of ethanol solvent, 3.5 parts of sodium alginate aqueous solution with mass fraction of 5% and 0.25 part of itaconic acid.
The mass fraction of the maleic anhydride solution in this example was 2%.
The preparation method of the polyurethane resin modifier of the embodiment comprises the following steps:
s101: adding 4 parts of bis (dioctyl-oxy-pyrophosphato) ethylene titanate into 22.5 parts of polyurethane resin, then adding 3 parts of amino silicone oil and 2 parts of tween 60, and uniformly stirring to obtain a polyurethane resin additive;
s102: adding 2 parts of diisooctyl phosphate and 3.5 parts of dodecylphenol into 15 parts of ethanol solvent, uniformly stirring, then adding 0.60 part of divinylbenzene, and fully stirring to obtain a compound agent;
s103: and adding the polyurethane resin additive into the compound agent according to the weight ratio of 1:5, and continuously stirring the mixture sufficiently to obtain the polyurethane resin modifier.
The curing agent of this example is an aromatic polyamine curing agent.
The preparation method of the polyurethane resin composition of the present embodiment is: uniformly stirring the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier, then adding silver powder and a curing agent, and continuously and fully stirring to obtain the polyurethane resin composition.
The polyurethane resin composition is applied to display screen packaging.
Comparative example 1.
The difference from example 3 is that no attapulgite coordinated hydroxyapatite modified compound agent is added.
Comparative example 2.
The difference from example 3 is that the attapulgite modifier is replaced by attapulgite in the preparation of the attapulgite coordinated hydroxyapatite modified compound agent.
Comparative example 3.
The difference from example 3 is that the hydroxyapatite formulation is replaced by hydroxyapatite.
Comparative example 4.
The difference from example 3 is that the chitosan aqueous solution is replaced by deionized water in the preparation of the attapulgite coordinated hydroxyapatite modified compound agent.
Comparative example 5.
The difference from example 3 is the composition of the conditioning agent: the conditioner comprises the following raw materials in parts by weight: 2 parts of maleic anhydride solution and 12.5 parts of ethanol solvent.
Comparative example 6.
The difference from example 3 is that no polyurethane resin modifier was added.
Comparative example 7.
The difference from example 3 is that the polyurethane resin modifier is replaced with polyurethane resin.
Examples 1 to 3 and comparative examples 1 to 7 were measured under ultraviolet irradiation under conventional conditions and after exposure to ultraviolet irradiation having a power of 300W for 10 hours
The products of the invention have excellent electric conductivity, and simultaneously, the electric conductivity and the light transmittance can achieve the coordination effect, and the prepared products have stable performance under ultraviolet irradiation; the product has obviously reduced conductivity and light transmittance without adding one of the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier, and meanwhile, the attapulgite modified compound agent is replaced by attapulgite in the preparation of the attapulgite coordinated hydroxyapatite modified compound agent, the hydroxyapatite compound agent is replaced by hydroxyapatite, the chitosan aqueous solution is replaced by deionized water in the preparation of the attapulgite coordinated hydroxyapatite modified compound agent, the performances of the product have a trend of deterioration, and the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier prepared by the method have synergistically enhanced conductivity and light transmittance, so that obvious coordinated improvement effects can be achieved.
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 is characterized in that the raw materials of the polyurethane resin composition comprise a curing agent, an attapulgite coordinated hydroxyapatite modified compound agent, a polyurethane resin modifier and silver powder; the mass ratio of the curing agent to the attapulgite coordinated hydroxyapatite modified compound agent to the polyurethane resin modifier to the silver powder is (0.25-0.35): (3-6): (8-12):3.
2. The polyurethane resin composition according to claim 1, wherein the preparation method of the attapulgite coordinated hydroxyapatite modified compound agent is as follows:
s11: feeding hydroxyapatite into 4-5 times of hydrochloric acid solution with the mass fraction of 5%, then adding cerium nitrate solution with the mass fraction of 5-10% of the total amount of the hydroxyapatite and sodium dodecyl sulfate with the mass fraction of 1-5% of the total amount of the hydroxyapatite, and stirring fully to obtain a hydroxyapatite preparation;
s12: preheating attapulgite at 70-80 ℃ for 10-20min, then preserving heat, uniformly stirring in a conditioner with the total amount of 3-5 times of the attapulgite, washing with water and drying to obtain an attapulgite modifier;
s13: adding a hydroxyapatite modifier accounting for 5-10% of the total weight of the attapulgite modifier into the attapulgite modifier, and sending into a ball mill for ball milling for 1-2h at a ball milling rotating speed of 1000-1500r/min, and obtaining a ball milling compound agent after ball milling;
s14: the ball-milling compound agent is sent into chitosan water solution with the weight being 3-5 times that of the ball-milling compound agent, then silane coupling agent water solution with the weight being 5-10% of the total weight of the ball-milling compound agent is added, the mixture is stirred fully, washed and dried, and the attapulgite coordinated hydroxyapatite modified compound agent is obtained.
3. A polyurethane resin composition according to claim 2, wherein the cerium nitrate solution has a mass fraction of 0.55 to 0.75%.
4. A polyurethane resin composition according to claim 2, wherein the mass fraction of the aqueous chitosan solution is 6-8%; the mass fraction of the aqueous solution of the silane coupling agent is 4-8%.
5. A polyurethane resin composition according to claim 2, wherein the conditioning agent comprises the following raw materials in parts by weight: 1-3 parts of maleic anhydride solution, 10-15 parts of ethanol solvent, 2-5 parts of sodium alginate aqueous solution with mass fraction of 5% and 0.2-0.3 part of itaconic acid.
6. The polyurethane resin composition according to claim 5, wherein the mass fraction of the maleic anhydride solution is 1 to 3%.
7. The polyurethane resin composition according to claim 1, wherein the polyurethane resin modifier is prepared by the following steps:
s101: adding 3-5 parts of bis (dioctyl-oxy-pyrophosphato) ethylene titanate into 20-25 parts of polyurethane resin, then adding 1-5 parts of amino silicone oil and 1-3 parts of tween 60, and uniformly stirring to obtain a polyurethane resin additive;
s102: adding 1-3 parts of diisooctyl phosphate and 2-5 parts of dodecylphenol into 10-20 parts of ethanol solvent, uniformly stirring, then adding 0.55-0.75 part of divinylbenzene, and fully stirring to obtain a compound agent;
s103: and adding the polyurethane resin additive into the compound agent according to the weight ratio of 1:5, and continuously stirring the mixture sufficiently to obtain the polyurethane resin modifier.
8. The polyurethane resin composition according to claim 1, wherein the curing agent is an aromatic polyamine-based curing agent.
9. The polyurethane resin composition according to claim 1, wherein the polyurethane resin composition is prepared by the following steps: uniformly stirring the attapulgite coordinated hydroxyapatite modified compound agent and the polyurethane resin modifier, then adding silver powder and a curing agent, and continuously and fully stirring to obtain the polyurethane resin composition.
10. Use of the polyurethane resin composition according to any one of claims 1 to 9 in display packaging.
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