CN115595046B - UV (ultraviolet) coating capable of lasting fragrance - Google Patents
UV (ultraviolet) coating capable of lasting fragrance Download PDFInfo
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- CN115595046B CN115595046B CN202211266351.8A CN202211266351A CN115595046B CN 115595046 B CN115595046 B CN 115595046B CN 202211266351 A CN202211266351 A CN 202211266351A CN 115595046 B CN115595046 B CN 115595046B
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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
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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
- 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
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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
- 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
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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
- C09D7/60—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
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Abstract
The invention relates to the technical field of coatings, in particular to a durable fragrance-retaining UV coating. The micro-capsule coated with the essence is directly added into the coating system to form the fragrant coating, so that the fragrance emitted by the micro-capsule is light, and the fragrance experience is poor. Aiming at the problems, the invention provides the UV coating with lasting fragrance, the self-made essence microcapsule is added in the formula, and the surface of the self-made essence microcapsule is grafted with a long fluorocarbon chain, so that the self-made essence microcapsule has floating property in a coating system, is enriched on the surface of the coating in the infrared leveling of the coating, and after photo-curing, the fragrance coating is obtained, and the lasting slow release of the fragrance of the coating can be realized by only adding a small amount of essence in the coating system.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a durable fragrance-retaining UV coating.
Background
Functional coatings are increasingly demanded in the current society life, and the aromatic coating is one of the functional coatings and can be applied to home furnishings and decorative plates. At present, the fragrance coating is mostly realized by directly adding essence into the coating, and the fragrance coating obtained by the method can emit high-concentration fragrance in a short time, but the fragrance can be emitted for a short time. In this regard, it has been studied to release the fragrance by coating the essence with microcapsules so as to extend the duration of releasing the fragrance from the coating, for example, chinese patent No. CN 108774460A discloses a self-cleaning coating for releasing fragrance based on strawberry microcapsules, which uses microcapsules to coat the essence and adds the microcapsules to a coating system, thereby imparting the obtained coating with a slow release of fragrance. However, in fact, only the microcapsules on the shallow surface of the coating can function, and the microcapsules inside the coating are limited by the resin cross-linked network, so that the fragrance is extremely difficult to release into the environment and basically cannot be effective. Therefore, the small amount of essence-coated microcapsules is directly added to the flavor coating formed in the coating system, so that the emitted flavor is light (hardly smelling) and the flavor experience is poor. To increase the concentration of the released fragrance of the fragrance coating, a large number of fragrance capsules must be added to the coating system, which necessarily increases the production costs and also leads to a reduction in the overall properties of the resulting coating.
Meanwhile, the general acrylate monomer is used for preparing the microcapsule, the mechanical property of the obtained microcapsule shell is poor, the microcapsule shell is easily broken by external force friction, the essence leaks, and the durability of the fragrance of the coating is affected.
The UV coating is an environment-friendly and green efficient coating, the patent combining the microcapsule technology and the UV coating is freshly reported, the invention aims at the problems, the invention provides a durable fragrance-retaining UV coating, the long fluorocarbon chain grafting modified essence microcapsule is added in the UV coating, the essence microcapsule tends to be enriched on the surface of the coating in the infrared leveling process of the UV coating, after the UV coating is photo-cured, the essence microcapsule with enriched shallow surface is used for slowly releasing fragrance, the release window of 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 ring structure, the shrinkage rate of the photo-curing coating can be reduced, and meanwhile, 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: the micro-capsules coated with the essence are directly added into the fragrant coating formed in the coating system, so that the emitted fragrance is light, and the fragrance experience is poor.
Aiming at the problems, the invention provides a durable 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 silicon dioxide and 2.4 parts by weight of polyvinylpyrrolidone, uniformly stirring, and then dropwise adding sulfuric acid to adjust the pH=3 of the solution to obtain a water phase suspension;
(2) 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 are added into a beaker, 1.88 parts by weight of methyl methacrylate and 2.5 parts by weight of diethylene glycol diacrylate are added dropwise, then 4 parts by weight of TPO and 60 parts by weight of essence are added, and the mixture is stirred uniformly to obtain an oil phase;
(3) Adding the oil phase obtained in the step (2) into the aqueous phase suspension obtained in the step (1), stirring for 20min at 20000rpm in a high-speed homogenizer, dispersing into oil phase droplet suspension, transferring to a reaction kettle with stirring, and transferring 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 2 hours under the irradiation of a UVLED lamp, filtering and drying to obtain essence microcapsules with surfaces rich in carboxyl groups;
(4) Adding essence microcapsule, p-toluenesulfonic acid, hydroquinone and dimethylbenzene obtained in the step (3) into a three-hole round-bottom flask, wherein the mass ratio of the essence microcapsule to the p-toluenesulfonic acid to the hydroquinone is 7.04:0.01:0.001, the volume concentration of the essence microcapsule in the dimethylbenzene is 0.2g/mL, stirring and dispersing uniformly, heating the round-bottom flask to 70 ℃, continuously dropwise adding PETA into a reaction system under continuous stirring, monitoring the reaction through FTIR measurement, and washing and precipitating with n-hexane after the reaction is finished to obtain a product b;
(5) 50g of a product b, 0.1g of a photoinitiator and 100mL of toluene are added into a three-hole round-bottomed flask, then the temperature of the round-bottomed flask is raised to 50 ℃, perfluoroalkyl mercaptan is continuously dripped into the flask under the protection of nitrogen, the mixture is irradiated by an LED lamp with the wavelength of 365nm while stirring, the reaction is monitored through FTIR measurement, after the double bond absorption peak in a reaction system disappears, the reaction is finished, and then the reaction solution is centrifugally separated, washed and dried, so that the essence microcapsule with the surface grafted with long fluorocarbon chains is obtained.
Specifically, the essence is at least one of jasmine essence, rose essence, lemon essence, vanilla essence, lily essence, peppermint essence, lavender essence, ancient Long Xiangjing, wormwood essence, osmanthus essence, violet essence, ylang-ylang essence and the like.
Specifically, the reactive 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 organosilicon leveling agent.
Specifically, the organosilicon leveling agent comprises at least one of BYK333 and Digao 450.
Specifically, the dispersant is a polymer dispersant.
Specifically, the high molecular dispersant is BYK163.
Specifically, the defoaming agent is an organosilicon defoaming agent.
Specifically, the organosilicon defoamer is digao 815N.
Specifically, the preparation method of the durable fragrance-retaining UV coating comprises the following steps:
under the condition of avoiding light, uniformly stirring and mixing the acrylic resin, the essence microcapsule, the active monomer, the photoinitiator, the flatting agent, the dispersing agent and the defoaming agent according to the formula amount.
The lasting fragrance-retaining UV paint is applied as follows:
and (3) coating the coating on the surface of a PVC substrate under the light-shielding condition, leveling for 3min by infrared rays, and placing under an ultraviolet lamp for photo-curing to obtain the photo-curing coating.
Advantageous effects
(1) The self-made essence microcapsule is added into the UV coating capable of keeping fragrance for a long time, and long fluorocarbon chains are grafted on the surface of the self-made essence microcapsule, so that the self-made essence microcapsule has floating property in a coating system, is enriched on the surface of the coating in the infrared leveling of the coating, and after photo-curing, the fragrance coating is obtained, and the lasting slow-release fragrance of the coating can be realized by only adding a small amount of essence into the coating system;
(2) The long fluorocarbon chains are grafted on the surface of the self-made essence microcapsule, and the long fluorocarbon chains on the surface of the aroma coating are mutually interwoven and wound, so that the surface of the aroma coating has better water resistance;
(3) The self-made essence microcapsule shell structure contains an ester ring structure, is introduced by a TBCHA segment and a CHMA segment, can reduce the shrinkage rate of a photo-curing coating, and simultaneously forms larger steric hindrance, so that the obtained essence microcapsule shell is tough and elastic and has better wear resistance;
(4) The essence microcapsule shell obtained by the invention has moderate crosslinking degree, moderate window for releasing fragrance and better user experience.
Drawings
Fig. 1: SEM image of self-made essence microcapsules of the invention.
Detailed Description
The epoxy acrylic resin used in the following examples of the present invention is epoxy acrylic resin 6202 produced by Changxing company.
The urethane acrylic resin used in the following examples of the present invention was 6145-100 urethane acrylic resin manufactured by Changxing company.
The polyester acrylic resin used in the following examples of the present invention is polyester acrylic resin 6380 manufactured by Changxing company.
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 silicon dioxide and 2.4 parts by weight of polyvinylpyrrolidone, uniformly stirring, and then dropwise adding sulfuric acid to adjust the pH=3 of the solution to obtain a water phase suspension;
(2) 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 are added into a beaker, 1.88 parts by weight of methyl methacrylate, 2.5 parts by weight of diethylene glycol diacrylate are added dropwise, then 4 parts by weight of TPO and 60 parts by weight of lily essence are added, and the mixture is stirred uniformly to obtain an oil phase;
(3) Adding the oil phase obtained in the step (2) into the aqueous phase suspension obtained in the step (1), stirring for 20min at 20000rpm in a high-speed homogenizer, dispersing into oil phase droplet suspension, transferring to a reaction kettle with stirring, and transferring 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 2 hours under the irradiation of a UVLED lamp, filtering and drying to obtain essence microcapsules with surfaces rich in carboxyl groups;
(4) Adding essence microcapsule, p-toluenesulfonic acid, hydroquinone and dimethylbenzene obtained in the step (3) into a three-hole round-bottom flask, wherein the mass ratio of the essence microcapsule to the p-toluenesulfonic acid to the hydroquinone is 7.04:0.01:0.001, the volume concentration of the essence microcapsule in the dimethylbenzene is 0.2g/mL, stirring and dispersing uniformly, heating the round-bottom flask to 70 ℃, continuously dropwise adding PETA into a reaction system under continuous stirring, monitoring the reaction through FTIR measurement, and washing and precipitating with n-hexane after the reaction is finished to obtain a product b;
(5) 50g of a product b, 0.1g of a photoinitiator and 100mL of toluene are added into a three-hole round-bottomed flask, then the temperature of the round-bottomed flask is raised to 50 ℃, perfluoroalkyl mercaptan is continuously dripped into the flask under the protection of nitrogen, the mixture is irradiated by an LED lamp with the wavelength of 365nm while being stirred, the reaction is monitored by FTIR measurement, after the double bond absorption peak in a reaction system disappears, the reaction is finished, and then the reaction solution is centrifugally separated, washed and dried, so that the essence microcapsule with the surface grafted with long fluorocarbon chains and the average particle size of 30 mu m is obtained, and the appearance of the obtained lily essence microcapsule is shown in an attached figure 1 of the specification.
Example 1
The durable fragrance-retaining UV coating comprises the following components in parts by weight:
example 2
The durable fragrance-retaining UV coating comprises the following components in parts by weight:
example 3
The durable fragrance-retaining UV coating comprises the following components in parts by weight:
example 4
The durable fragrance-retaining UV coating comprises the following components in parts by weight:
example 5
The durable fragrance-retaining UV coating comprises the following components in parts by weight:
example 6
The durable fragrance-retaining UV coating comprises the following components in parts by weight:
comparative example 1 the same as example 1 was different in that comparative example 1 used an equimolar amount of methyl methacrylate instead of TBCHA and CHMA in the preparation of essence microcapsules, the molar mass of methyl methacrylate being equal to the sum of the molar amounts of 60 parts by weight TBCHA and 40 parts by weight CHMA.
Comparative example 2 the same as example 1, except that comparative example 2 used an equimolar amount of TBCHA in place of 40 parts by weight CHMA in the preparation of essence 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 in the preparation of essence microcapsules.
Comparative example 4 the same as example 1, except that the essence microcapsules in comparative example 4 were prepared as follows:
(1) 5 parts by weight of tetraethyl orthosilicate, 1 part by weight of tridecyl propyl trimethoxy silane, 0.5 part by weight of sodium dodecyl sulfate and 120 parts by weight of deionized water are added into a single-neck flask, ultrasonic treatment is carried out at normal temperature for 10min, then 0.5 part by weight of ammonia water is added into the mixture, and finally magnetic stirring is carried out for 8h, thus obtaining 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 azodiisoheptonitrile, 3 parts by weight of diethylaminoethyl methacrylate and 0.8 part by weight of lily essence into a single-neck flask, uniformly mixing and ultrasonically emulsifying for 40min by adding 20 parts by weight of fluorine-containing silicon balls prepared in the previous step and 120 parts by weight of deionized water, and magnetically stirring for 12h at 75 ℃ to obtain the lily essence microcapsule.
Application:
the UV coatings obtained in examples 1 to 6 and comparative examples 1 to 4 were applied to the surfaces of PVC substrates, respectively, and cured under an ultraviolet lamp after leveling for 3 minutes under light-shielding conditions to obtain a cured coating having a thickness of 50. Mu.m, and then the cured coating was subjected to a related performance test, the specific test results are shown in Table 1.
Water resistance: the substrate was boiled in boiling water at 100℃and the time for the paint film to start to whiten and bubble was recorded.
Wear resistance of the coating surface: the test was performed according to standard GB/T6739-2006.
Fragrance duration test criteria: and (3) putting the coated PVC base material with the same specification into a sealing bag, sealing for 1h at 60 ℃, smelling the smell, then taking the sealing bag as a cycle, performing cycle test until the smell cannot be smelled, and recording the cycle test times.
Coating hardness: the test was performed according to standard GB/T6739-2006.
TABLE 1
| Test item | Water resistance (h) | Abrasion resistance (g/cm) 2 ) | Hardness of | Fragrance lasting (secondary) |
| 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 |
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. The durable fragrance-retaining UV coating is characterized by comprising the following components in parts by weight:
40-60 parts of acrylic resin
Essence microcapsule 10-20 parts
5-20 parts of active monomer
3-6 parts of photoinitiator
0.1 to 0.5 part of leveling agent
0.1 to 0.5 part of dispersing agent
0.1-0.5 part of defoaming agent;
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 silicon dioxide and 2.4 parts by weight of polyvinylpyrrolidone, uniformly stirring, and then dropwise adding sulfuric acid to adjust the pH=3 of the solution to obtain a water phase suspension;
(2) 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 are added into a beaker, 1.88 parts by weight of methyl methacrylate and 2.5 parts by weight of diethylene glycol diacrylate are added dropwise, then 4 parts by weight of TPO and 60 parts by weight of essence are added, and the mixture is stirred uniformly to obtain an oil phase;
(3) Adding the oil phase obtained in the step (2) into the aqueous phase suspension obtained in the step (1), stirring for 20min at 20000rpm in a high-speed homogenizer, dispersing into oil phase droplet suspension, transferring to a reaction kettle with stirring, and transferring 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 2 hours under the irradiation of a UVLED lamp, filtering and drying to obtain essence microcapsules with surfaces rich in carboxyl groups;
(4) Adding essence microcapsule, p-toluenesulfonic acid, hydroquinone and dimethylbenzene obtained in the step (3) into a three-hole round-bottom flask, wherein the mass ratio of the essence microcapsule to the p-toluenesulfonic acid to the hydroquinone is 7.04:0.01:0.001, the volume concentration of the essence microcapsule in the dimethylbenzene is 0.2g/mL, stirring and dispersing uniformly, heating the round-bottom flask to 70 ℃, continuously dropwise adding PETA into a reaction system under continuous stirring, monitoring the reaction through FTIR measurement, and washing the precipitate with normal hexane after the absorption peak of carboxyl in the reaction system disappears and the reaction is finished to obtain a product b;
(5) 50g of a product b, 0.1g of a photoinitiator and 100mL of toluene are added into a three-hole round-bottomed flask, then the temperature of the round-bottomed flask is raised to 50 ℃, perfluoroalkyl mercaptan is continuously dripped into the flask under the protection of nitrogen, the mixture is irradiated by an LED lamp with the wavelength of 365nm while stirring, the reaction is monitored through FTIR measurement, after the double bond absorption peak in a reaction system disappears, the reaction is finished, and then the reaction solution is centrifugally separated, washed and dried, so that the essence microcapsule with the surface grafted with long fluorocarbon chains is obtained.
2. The long lasting fragrance UV coating according to claim 1, wherein the acrylic resin is at least one of epoxy acrylic resin, urethane acrylic resin, polyester acrylic resin.
3. The durable fragrance-retaining UV coating according to claim 1, wherein the fragrance is at least one of jasmine fragrance, lemon fragrance, rose fragrance, vanilla fragrance, lily fragrance, peppermint fragrance, lavender fragrance, ancient Long Xiangjing, mugwort fragrance, osmanthus fragrance, violet fragrance, ylang fragrance.
4. A long lasting fragrance UV coating according to claim 1, wherein said reactive monomer comprises at least one of HDDA, PET3A, TMP EOTA.
5. The long lasting fragrance UV coating according to claim 1, wherein the leveling agent is an organosilicon leveling agent.
6. The long lasting fragrance UV coating according to claim 1, wherein the dispersant is a polymeric dispersant.
7. A durable fragrance-retaining UV coating according to claim 1, wherein the defoamer is a silicone-based defoamer.
8. A durable fragrance-retaining UV coating according to any one of claims 1-7, characterized in that it is prepared by the following method:
under the condition of avoiding light, uniformly stirring and mixing the acrylic resin, the essence microcapsule, the active monomer, the photoinitiator, the flatting agent, the dispersing agent and the defoaming agent according to the formula amount.
9. A long lasting fragrance UV coating according to claim 8, characterized in that it is applied as follows:
and (3) coating the coating on the surface of a PVC substrate under the light-shielding condition, leveling for 3min by infrared rays, and placing under an ultraviolet lamp for photo-curing to obtain the photo-curing coating.
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| CN102015092A (en) * | 2008-01-15 | 2011-04-13 | 巴斯夫欧洲公司 | Fragrance-containing microcapsules with improved release properties |
| WO2011100510A1 (en) * | 2010-02-11 | 2011-08-18 | Diamond Marketing Agency, Llc | A composition for a scented paint |
| CN105838501A (en) * | 2016-03-29 | 2016-08-10 | 南京工业大学 | Slow-release essence microcapsule and preparation method thereof |
| CN107177301A (en) * | 2016-05-19 | 2017-09-19 | 湖北航天化学技术研究所 | A kind of sustainable slow-release fragrance anti-glare hardened film and its application |
| CN106634210A (en) * | 2016-11-18 | 2017-05-10 | 佛山市高明区海帝陶瓷原料有限公司 | Ceramic permeable ink with long-lasting fragrance |
| CN108659956A (en) * | 2018-04-26 | 2018-10-16 | 上海应用技术大学 | It is a kind of using Vinalac 5920 as essence microcapsule of cyst wall and preparation method thereof |
| CN108774460A (en) * | 2018-04-27 | 2018-11-09 | 江南大学 | A kind of fragrant slow release automatic cleaning coating and its preparation method and application based on strawberry type microcapsules |
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| CN115595046A (en) | 2023-01-13 |
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