CN115595046A - UV coating capable of lasting fragrance - Google Patents
UV coating capable of lasting fragrance Download PDFInfo
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- CN115595046A CN115595046A CN202211266351.8A CN202211266351A CN115595046A CN 115595046 A CN115595046 A CN 115595046A CN 202211266351 A CN202211266351 A CN 202211266351A CN 115595046 A CN115595046 A CN 115595046A
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- essence
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- fragrance
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- 238000000576 coating method Methods 0.000 title claims abstract description 82
- 239000011248 coating agent Substances 0.000 title claims abstract description 74
- 239000003205 fragrance Substances 0.000 title claims abstract description 54
- 230000002045 lasting effect Effects 0.000 title claims abstract description 27
- 239000003094 microcapsule Substances 0.000 claims abstract description 57
- 238000000016 photochemical curing Methods 0.000 claims abstract description 9
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
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- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
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- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 2
- 235000009051 Ambrosia paniculata var. peruviana Nutrition 0.000 claims description 2
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- 239000004814 polyurethane Substances 0.000 claims description 2
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- 235000019083 Osmanthus fragrans Nutrition 0.000 claims 1
- 230000005923 long-lasting effect Effects 0.000 claims 1
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- 239000011737 fluorine Substances 0.000 description 2
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- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 description 1
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- KZEVSDGEBAJOTK-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[5-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CC=1OC(=NN=1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O KZEVSDGEBAJOTK-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- SJIXRGNQPBQWMK-UHFFFAOYSA-N 2-(diethylamino)ethyl 2-methylprop-2-enoate Chemical compound CCN(CC)CCOC(=O)C(C)=C SJIXRGNQPBQWMK-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- JQMFQLVAJGZSQS-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JQMFQLVAJGZSQS-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention relates to the technical field of coatings, in particular to a UV coating with lasting fragrance. A small amount of microcapsules coated with essence are directly added into a coating system to form a fragrant coating, so that the fragrance emitted by the coating is very light, and the fragrance experience is not good. Aiming at the problems, the invention provides the UV coating with lasting fragrance, the self-made fragrance microcapsules are added in the formula, long fluorocarbon chains are grafted on the surfaces of the self-made fragrance microcapsules, so that the obtained self-made fragrance microcapsules have floating property in a coating system, the self-made fragrance microcapsules are enriched on the surface of a coating in coating infrared leveling, a fragrance coating is obtained after photocuring, and the coating can realize lasting fragrance release by only adding a small amount of fragrance in the coating system.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a UV coating with lasting fragrance.
Background
Functional coatings are increasingly demanded in modern social life, and the fragrant coating is one of the functional coatings and can be applied to home furnishing and decorative plates. At present, the fragrant coating is mostly realized by directly adding essence into the coating, and the like, and the fragrant coating obtained by the method can emit high-concentration fragrance in a short time, but the fragrance emission can only be maintained for a short time. In contrast, there is a study on the slow release of fragrance by coating essence with microcapsules so as to prolong the time for the coating to release fragrance, for example, chinese patent CN 108774460A discloses a fragrance slow release self-cleaning coating based on strawberry type microcapsules, which adopts microcapsules to coat essence and adds the microcapsules to a coating system, thereby endowing the obtained coating with fragrance slow release property. However, in fact, only the microcapsules on the shallow surface of the coating can work, and the microcapsules in the coating are limited by the crosslinked network of the resin, so that the fragrance is difficult to release into the environment and basically cannot achieve the effect. Therefore, a small amount of essence-coated microcapsules are directly added into a fragrance coating formed in a coating system, the emitted fragrance is very weak (barely smells), and the fragrance experience is poor. To increase the concentration of fragrance released by a scented coating, a large number of perfume capsules must be added to the coating system, which necessarily increases the cost of production and also results in a decrease in the overall performance of the resulting coating.
Meanwhile, common acrylate monomers are used for preparing the microcapsules, and the obtained microcapsule shells have poor mechanical properties and are easy to break due to external force friction, so that essence leaks and the durability of the coating fragrance is influenced.
The UV coating is an environment-friendly green high-efficiency coating, a patent of combining a microcapsule technology with the UV coating is newly reported, and the invention provides the UV coating with lasting fragrance, the essence microcapsule modified by long fluorocarbon chain grafting is added in the UV coating, the essence microcapsule tends to be enriched on the surface of a coating in the infrared leveling process of the UV coating, the essence microcapsule releases fragrance enriched on the shallow surface of the coating after the UV coating is photocured, the release window of the essence microcapsule to the essence is moderate, the fragrance release speed and the release amount also meet the requirements, meanwhile, the shell structure of the essence microcapsule contains an ester annular structure, the ester annular structure can reduce the shrinkage rate of the photocuring coating, and a larger steric hindrance is formed, so that the shell of the essence microcapsule is tough and elastic, and the wear resistance of the shell of the essence microcapsule is improved.
Disclosure of Invention
The problems in the prior art are that: a small amount of microcapsules coated with essence are directly added into a coating system to form a fragrant coating, so that the fragrance emitted by the coating is very light, and the fragrance experience is not good.
Aiming at the problems, the invention provides a lasting fragrance-retaining UV coating which comprises the following components in parts by weight:
specifically, the acrylic resin is at least one of epoxy acrylic resin, polyurethane acrylic resin and polyester acrylic resin.
Specifically, the essence microcapsule is prepared according to the following steps:
(1) Adding 600 parts by weight of distilled water into a beaker, sequentially adding 150 parts by weight of sodium chloride, 16 parts by weight of nano-silica and 2.4 parts by weight of polyvinylpyrrolidone, uniformly stirring, and then dropwise adding sulfuric acid to adjust the pH of the solution to be =3 to obtain a water-phase suspension;
(2) Adding 150 parts by weight of acrylic acid, 50 parts by weight of methacrylic acid, 60 parts by weight of TBCHA and 40 parts by weight of CHMA into a beaker, dropwise adding 1.88 parts by weight of methyl methacrylate and 2.5 parts by weight of diethylene glycol diacrylate, then adding 4 parts by weight of TPO and 60 parts by weight of essence, and uniformly stirring to obtain an oil phase;
(3) Adding the oil phase obtained in the step (2) into the water phase suspension obtained in the step (1), wherein the mass ratio of the water phase to the oil phase suspension is 1:1, stirring the mixture in a high-speed homogenizer at 20000rpm for 20min, dispersing the mixture into oil phase droplet suspension, transferring the suspension into a reaction kettle with stirring, and adding N 2 Under the protection, the temperature of the reaction kettle is raised to 65 ℃, the wavelength is 395nm, and the energy is 400mj/cm 2 The mixture is stirred and reacts for 2 hours under the irradiation of a UVLED lamp, and the essence microcapsule with the surface rich in carboxyl is obtained after filtration and drying;
(4) Adding the essence microcapsules obtained in the step (3), p-toluenesulfonic acid, hydroquinone and xylene into a three-hole round-bottom flask, wherein the mass ratio of the essence microcapsules to the p-toluenesulfonic acid and the hydroquinone is 7.04 to 0.01, the volume concentration of the essence microcapsules in the xylene is 0.2g/mL, after uniformly stirring and dispersing, raising the temperature of the round-bottom flask to 70 ℃, continuously dropwise adding PETA into a reaction system under stirring, monitoring the reaction through FTIR measurement, when the absorption peak of carboxyl in the reaction system disappears, and after the reaction is finished, washing and precipitating with n-hexane to obtain a product b;
(5) Adding 50g of the product b, 0.1g of photoinitiator and 100mL of toluene into a three-hole round-bottom flask, then heating the round-bottom flask to 50 ℃, continuously dropwise adding perfluoroalkyl mercaptan into the flask under the protection of nitrogen, irradiating the flask with an LED lamp with the wavelength of 365nm while stirring, monitoring the reaction through FTIR measurement, after the double-bond absorption peak in the reaction system disappears and the reaction is finished, centrifugally separating the reaction solution, washing with water and drying to obtain the essence microcapsule with the surface grafted with the long fluorocarbon chains.
Specifically, the essence is at least one of jasmine essence, rose essence, lemon essence, vanilla essence, lily essence, mint essence, lavender essence, cologne essence, wormwood essence, osmanthus essence, violet essence, ylang-ylang essence, etc.
Specifically, the active monomer comprises at least one of HDDA, PET3A, TMP EOTA.
Specifically, the photoinitiator includes at least one of a photoinitiator TPO, a photoinitiator 819, a photoinitiator 1173, a photoinitiator 184, a photoinitiator ITX, and a photoinitiator 907.
Specifically, the leveling agent is an organic silicon leveling agent.
Specifically, the silicone leveling agent includes at least one of BYK333 and dike height 450.
Specifically, the dispersant is a polymer dispersant.
Specifically, the polymer dispersant is BYK163.
Specifically, the defoaming agent is a silicone defoaming agent.
Specifically, the silicone defoamer is digao 815N.
Specifically, the preparation method of the UV coating with lasting fragrance comprises the following steps:
under the condition of keeping out of the sun, according to the formula amount, and stirring and mixing the acrylic resin, the essence microcapsules, the active monomer, the photoinitiator, the flatting agent, the dispersing agent and the defoaming agent uniformly to obtain the essence.
The UV coating with lasting fragrance is applied as follows:
coating the coating on the surface of a PVC base material in a dark condition, leveling for 3min by infrared rays, and then placing under an ultraviolet lamp for photocuring to obtain the photocuring coating.
Advantageous effects
(1) The self-made essence microcapsules are added into the UV coating with lasting fragrance, and long fluorocarbon chains are grafted on the surfaces of the self-made essence microcapsules, so that the self-made essence microcapsules have floating property in a coating system, are enriched on the surface of a coating in infrared leveling of the coating, and a fragrance coating is obtained after photocuring;
(2) The long fluorocarbon chains are grafted on the surfaces of the self-made essence microcapsules, and the long fluorocarbon chains on the surfaces of the aroma coatings are interwoven and wound with each other, so that the surfaces of the aroma coatings have good water resistance;
(3) The self-made essence microcapsule shell structure contains an ester ring structure, the ester ring structure is introduced by TBCHA fragments and CHMA fragments, the ester ring structure can reduce the shrinkage rate of a photocuring coating, and a larger steric hindrance is formed at the same time, so that the obtained essence microcapsule shell is tough and elastic and has better wear resistance;
(4) The obtained essence microcapsule shell has moderate crosslinking degree, moderate fragrance releasing window and better user experience.
Drawings
FIG. 1: SEM image of the self-made essence microcapsule of the invention.
Detailed Description
The epoxy acrylic resin used in the following examples of the present invention was epoxy acrylic resin 6202 manufactured by yolking corporation.
The urethane acrylic resin used in the following examples of the present invention was urethane acrylic resin 6145-100 produced by chang corporation.
The polyester acrylic resin used in the following examples of the present invention was polyester acrylic resin 6380 manufactured by Changxing corporation.
The essence microcapsules used in the following examples of the present invention were prepared according to the following steps:
(1) Adding 600 parts by weight of distilled water into a beaker, sequentially adding 150 parts by weight of sodium chloride, 16 parts by weight of nano-silica and 2.4 parts by weight of polyvinylpyrrolidone, uniformly stirring, and dropwise adding sulfuric acid to adjust the pH =3 to obtain an aqueous suspension;
(2) Adding 150 parts by weight of acrylic acid, 50 parts by weight of methacrylic acid, 60 parts by weight of TBCHA and 40 parts by weight of CHMA into a beaker, dropwise adding 1.88 parts by weight of methyl methacrylate and 2.5 parts by weight of diethylene glycol diacrylate, then adding 4 parts by weight of TPO and 60 parts by weight of lily essence, and uniformly stirring to obtain an oil phase;
(3) Adding the oil phase obtained in the step (2) into the water phase suspension obtained in the step (1), wherein the mass ratio of the water phase to the oil phase suspension is 1:1, stirring for 20min at 20000rpm in a high-speed homogenizer, dispersing into oil phase droplet suspension, transferring into a reaction kettle with stirring, and adding N 2 Under the protection, the temperature of the reaction kettle is raised to 65 ℃, the wavelength is 395nm, and the energy is 400mj/cm 2 Stirring and reacting for 2h under the irradiation of a UVLED lamp, filtering and drying to obtain an essence microcapsule with a carboxyl-rich surface;
(4) Adding the essence microcapsules obtained in the step (3), p-toluenesulfonic acid, hydroquinone and xylene into a three-hole round-bottom flask, wherein the mass ratio of the essence microcapsules to the p-toluenesulfonic acid and the hydroquinone is 7.04 to 0.01, the volume concentration of the essence microcapsules in the xylene is 0.2g/mL, after uniformly stirring and dispersing, raising the temperature of the round-bottom flask to 70 ℃, continuously dropwise adding PETA into a reaction system under stirring, monitoring the reaction through FTIR measurement, when the absorption peak of carboxyl in the reaction system disappears, and after the reaction is finished, washing and precipitating with n-hexane to obtain a product b;
(5) Adding 50g of the product b, 0.1g of photoinitiator and 100mL of toluene into a three-hole round-bottom flask, then heating the round-bottom flask to 50 ℃, continuously dropwise adding perfluoroalkyl mercaptan into the flask under the protection of nitrogen, irradiating the flask with an LED lamp with the wavelength of 365nm while stirring, monitoring the reaction by FTIR measurement, after the double-bond absorption peak in the reaction system disappears and the reaction is finished, centrifugally separating, washing and drying the reaction solution to obtain the essence microcapsule with the long fluorocarbon chains grafted on the surface and the average particle size of about 30 mu m, wherein the appearance of the obtained lily essence microcapsule is shown in the attached figure 1 of the specification.
Example 1
The UV coating for lasting fragrance comprises the following components in parts by weight:
example 2
The UV coating for lasting fragrance comprises the following components in parts by weight:
example 3
The UV coating for lasting fragrance comprises the following components in parts by weight:
example 4
The UV coating for lasting fragrance comprises the following components in parts by weight:
example 5
The UV coating for lasting fragrance comprises the following components in parts by weight:
example 6
The UV coating for lasting fragrance comprises the following components in parts by weight:
comparative example 1 the same as example 1 except that comparative example 1 used an equimolar amount of methyl methacrylate instead of TBCHA and CHMA in the preparation of perfume microcapsules, the molar mass of methyl methacrylate being equal to the sum of the molar amounts of 60 parts by weight of TBCHA and 40 parts by weight of CHMA.
Comparative example 2 the same as example 1 except that comparative example 2 used an equimolar amount of TBCHA instead of 40 parts by weight CHMA in the preparation of perfume microcapsules.
Comparative example 3 the same as example 1 except that comparative example 3 replaced 60 parts by weight of TBCHA with an equimolar amount of CHMA during the preparation of perfume microcapsules.
Comparative example 4 the same as example 1 except that the perfume microcapsule in comparative example 4 was prepared according to the following procedure:
(1) Adding 5 parts by weight of tetraethyl orthosilicate, 1 part by weight of tridecyl propyl trimethoxy silane, 0.5 part by weight of lauryl sodium sulfate and 120 parts by weight of deionized water into a single-mouth flask, mixing, performing ultrasonic treatment at normal temperature for 10min, adding 0.5 part by weight of ammonia water into the mixture, and finally performing magnetic stirring for 8h to obtain the fluorine-containing silicon spheres.
(2) Adding 5 parts by weight of styrene, 0.5 part by weight of divinylbenzene, 0.1 part by weight of azobisisoheptonitrile, 3 parts by weight of diethylaminoethyl methacrylate and 0.8 part by weight of lily essence into a single-neck flask, mixing uniformly by ultrasonic, adding 20 parts by weight of fluorine-containing silicon balls prepared in the previous step and 120 parts by weight of deionized water, mixing, ultrasonically emulsifying for 40min, and magnetically stirring at 75 ℃ for 12h to obtain the lily essence microcapsule.
The application comprises the following steps:
respectively coating the UV coatings obtained in examples 1-6 and comparative examples 1-4 on the surface of a PVC base material under the condition of keeping out of the light, leveling for 3min by using infrared rays, then placing under an ultraviolet lamp for photocuring to obtain a photocured coating with the thickness of 50 mu m, and then carrying out related performance tests on the photocured coatings, wherein the specific test results are shown in Table 1.
Water resistance: the substrate was boiled in boiling water at 100 ℃ and the time to onset of whitish bubbling of the paint film was recorded.
Wear resistance of the coating surface: the tests were carried out according to the standard GB/T6739-2006.
Fragrance longevity test criteria: putting the coated PVC base material with the same specification into a sealing bag, sealing at 60 ℃ for 1h, smelling the odor, then taking the odor as a cycle, and carrying out the cycle test until the odor cannot be smelled, and recording the cycle test times.
Coating hardness: the tests were carried out according to the standard GB/T6739-2006.
TABLE 1
| Test item | Water resistance (h) | Abrasion resistance (g/cm) 2 ) | Hardness of | Lasting fragrance (times)) |
| Example 1 | 2 | 0.021 | 2H | 8 |
| Example 2 | 2 | 0.017 | 4H | 8 |
| Example 3 | 1.5 | 0.024 | 3H | 9 |
| Example 4 | 2 | 0.016 | 3H | 9 |
| Example 5 | 2 | 0.023 | 4H | 10 |
| Example 6 | 2 | 0.024 | 3H | 13 |
| Comparative example 1 | 2 | 0.040 | 2H | 8 |
| Comparative example 2 | 2 | 0.030 | 2H | 7 |
| Comparative example 3 | 2 | 0.032 | 2H | 7 |
| Comparative example 4 | 1 | 0.045 | 2H | 6 |
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The UV coating with lasting fragrance is characterized by comprising the following components in parts by weight:
2. the UV paint with lasting fragrance as claimed in claim 1, wherein the acrylic resin is at least one of epoxy acrylic resin, polyurethane acrylic resin, and polyester acrylic resin.
3. The UV coating with lasting fragrance of claim 1, wherein the perfume microcapsule is prepared according to the following steps:
(1) Adding 600 parts by weight of distilled water into a beaker, sequentially adding 150 parts by weight of sodium chloride, 16 parts by weight of nano-silica and 2.4 parts by weight of polyvinylpyrrolidone, uniformly stirring, and then dropwise adding sulfuric acid to adjust the pH of the solution to be =3 to obtain a water-phase suspension;
(2) Adding 150 parts by weight of acrylic acid, 50 parts by weight of methacrylic acid, 60 parts by weight of TBCHA and 40 parts by weight of CHMA into a beaker, dropwise adding 1.88 parts by weight of methyl methacrylate and 2.5 parts by weight of diethylene glycol diacrylate, then adding 4 parts by weight of TPO and 60 parts by weight of essence, and uniformly stirring to obtain an oil phase;
(3) Adding the oil phase obtained in the step (2) into the water phase suspension obtained in the step (1), wherein the mass ratio of the water phase to the oil phase suspension is 1:1, stirring the mixture in a high-speed homogenizer at 20000rpm for 20min, dispersing the mixture into oil phase droplet suspension, transferring the suspension into a reaction kettle with stirring, and adding N 2 Under the protection, the temperature of the reaction kettle is raised to 65 ℃, the wavelength is 395nm, and the energy is 400mj/cm 2 The mixture is stirred and reacts for 2 hours under the irradiation of a UVLED lamp, and the essence microcapsule with the surface rich in carboxyl is obtained after filtration and drying;
(4) Adding the essence microcapsules obtained in the step (3), p-toluenesulfonic acid, hydroquinone and xylene into a three-hole round-bottom flask, wherein the mass ratio of the essence microcapsules to the p-toluenesulfonic acid and the hydroquinone is 7.04 to 0.01, the volume concentration of the essence microcapsules in the xylene is 0.2g/mL, stirring and dispersing uniformly, then raising the temperature of the round-bottom flask to 70 ℃, continuously dropwise adding PETA into a reaction system under stirring, monitoring the reaction through FTIR measurement, and after an absorption peak of carboxyl in the reaction system disappears, washing and precipitating with n-hexane to obtain a product b;
(5) Adding 50g of the product b, 0.1g of photoinitiator and 100mL of toluene into a three-hole round-bottom flask, then heating the round-bottom flask to 50 ℃, continuously dropwise adding perfluoroalkyl mercaptan into the flask under the protection of nitrogen, irradiating the flask with an LED lamp with the wavelength of 365nm while stirring, monitoring the reaction through FTIR measurement, after the double-bond absorption peak in the reaction system disappears and the reaction is finished, centrifugally separating the reaction solution, washing with water and drying to obtain the essence microcapsule with the surface grafted with the long fluorocarbon chains.
4. The UV coating with lasting fragrance according to claim 3, wherein the essence is at least one of jasmine essence, lemon essence, rose essence, vanilla essence, lily essence, mint essence, lavender essence, cologne, wormwood essence, sweet osmanthus essence, violet essence and cananga essence.
5. The UV paint with lasting fragrance of claim 1, wherein the active monomer comprises at least one of HDDA, PET3A, TMP EOTA.
6. The UV paint with lasting fragrance as recited in claim 1, wherein the leveling agent is an organic silicon-based leveling agent.
7. The UV paint with lasting fragrance as claimed in claim 1, wherein the dispersant is a polymer dispersant.
8. The UV paint with lasting fragrance of claim 1, wherein the defoamer is a silicone defoamer.
9. A UV coating with lasting fragrance according to any one of claims 1 to 8, characterized in that it is prepared as follows:
under the condition of keeping out of the sun, according to the formula amount, and stirring and mixing the acrylic resin, the essence microcapsules, the active monomer, the photoinitiator, the flatting agent, the dispersing agent and the defoaming agent uniformly to obtain the essence.
10. A long-lasting fragrance UV coating according to claim 9, characterized in that it is applied as follows:
coating the coating on the surface of a PVC base material in a dark condition, leveling for 3min by infrared rays, and then placing under an ultraviolet lamp for photocuring to obtain the photocuring coating.
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