CN115322662B - Thermosetting adjustable matte gloss oil for metal printing and preparation method thereof - Google Patents
Thermosetting adjustable matte gloss oil for metal printing and preparation method thereof Download PDFInfo
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- CN115322662B CN115322662B CN202111458656.4A CN202111458656A CN115322662B CN 115322662 B CN115322662 B CN 115322662B CN 202111458656 A CN202111458656 A CN 202111458656A CN 115322662 B CN115322662 B CN 115322662B
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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
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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
- C09D7/42—Gloss-reducing agents
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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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Abstract
The invention relates to C09D, in particular to thermosetting adjustable matte gloss oil for metal printing and a preparation method thereof. Comprising the following steps: 60-70wt% of main resin, 10-20wt% of crosslinking curing agent, 8-15wt% of solvent and 1-6wt% of matting agent. The invention provides the gloss oil, which can provide a dark and matt packaging appearance effect, has smooth surface handfeel, and can also provide better external surface scratch resistance of three-piece can paint surfaces compared with a bright product; the invention utilizes the action of hydroxyl acrylic ester with high acid value and different curing agents, and utilizes the reaction rate of hydroxyl, carboxyl and different curing agents to form a micropore structure, and promotes the combination of silicon dioxide and micropores under the drive of wax powder, thereby promoting the uniform distribution of the silicon dioxide, being beneficial to improving extinction, avoiding the influence on fineness and smoothness and improving the processability of gloss oil in metal printing.
Description
Technical Field
The invention relates to C09D, in particular to thermosetting adjustable matte gloss oil for metal printing and a preparation method thereof.
Background
Gloss oil used for external coating of three cans of beverage and food packaging is mostly high-gloss (glossiness is 90-110) paint at present, and an acrylic paint and a preparation method thereof are provided by CN 111560200A. Comprises hydroxy acrylic resin, curing agent, solvent, etc., and has good impact resistance, bending resistance and weather resistance, and the glossiness is above 90.
But with the continuous change of aesthetic ideas of market consumers, three matt effects with lower glossiness can bring new and novel innovative experiences to consumers. Compared with the common bright effect, the matte effect package has the effects of elegant appearance, plain appearance and soft vision, and the product is more advanced, and can strongly attract consumers to purchase the product packaged by the matte effect.
Therefore, a matte oil is required to be provided, but the existing matte oil often has the problems that the matte degree is difficult to adjust, and the hand feeling, fineness and scratch resistance of the cured matte oil are poor.
Disclosure of Invention
In order to solve the problems, the first aspect of the invention provides a thermosetting adjustable matte gloss oil for metal printing, which comprises the following components in percentage by weight: 60-70wt% of main resin, 10-20wt% of crosslinking curing agent, 8-15wt% of solvent and 1-6wt% of matting agent.
In one embodiment, the primary resin is a thermosetting hydroxy acrylic resin; preferably, the viscosity of the thermosetting type hydroxy acrylic resin is 40-100 seconds/Grignard at 25 ℃, the hydroxyl value is 80-120mgKOH/g, and the acid value is 10-20 mgKOH/g. The inventor discovers that by controlling the thermosetting type hydroxy acrylic resin as a main film forming substance, the curing speed is improved by utilizing the characteristics of high acid value, environment friendliness, high solid content and low viscosity of the thermosetting type hydroxy acrylic resin, and the cured gloss oil has the characteristics of high hardness, wear resistance, good gloss leveling and high fullness.
As examples of the thermosetting type hydroxyl acrylic resin, there may be mentioned hydroxyl acrylic resin 838A (viscosity: 60-100 seconds/25 ℃ Grignard; 70.+ -.2% solids, hydroxyl number (solids), 115mgKOH/g, acid number, 13 mgKOH/g), hydroxyacrylic resin 835B (viscosity, 130-230 seconds (coating-4)/25 ℃, 50.+ -.1% solids, hydroxyl number (solids), 70mgKOH/g, acid number, 10 mgKOH/g), hydroxyacrylic resin 835A (viscosity, 4000-6000CPS/25 ℃ Grignard, 50.+ -. 1% solids, 66mgKOH/g, acid number, 3 mgKOH/g), hydroxyacrylic resin 830A (viscosity, 40-70 seconds/25 ℃ Grignard, solid number, 65.+ -. 2% hydroxyl number (solids), 90mgKOH/g, acid number, 10mgKOH/g, hydroxyl number, 30-70 seconds/25 ℃ Grignard, solid number, 65.+ -. 2% hydroxyl number (solids), 90mgKOH/g, acid number, 10 mgKOH/g), hydroxyacrylic resin 838B (viscosity, 4000-8000 ℃ 6mg KOH/25 ℃ C, 140mg KOH/g, solid number, 140mg KOH/g).
In one embodiment, the crosslinking curing agent is selected from one or more of blocked isocyanates, amino resins, polyisocyanates, preferably blocked isocyanates, amino resins.
The blocked isocyanate is formed by blocking isocyanate by using a blocking agent, and has reactivity after high-temperature deblocking; wherein the blocking agent is not particularly limited, such as phenol, dimethyl phthalate, epsilon-caprolactam, methyl ethyl ketoxime. Examples of blocked isocyanates include, but are not limited to, blocked hexamethylene diisocyanate biurets, e.g., langshengExamples of blocked isocyanates include BI7960, BI7963, BI7961 and BI7991; blocked isophorone diisocyanate trimers, e.g. Langsheng +.>Examples of blocked isocyanates include BI7951 and BI7950; blocked hexamethylene diisocyanate trimers, e.g. Langsheng ++>Examples of blocked isocyanates include DP9B/1353, BI7992, BI7982, BI7981 and BI7984; blocked toluene diisocyanate trimer.
As examples of the amino resin, there are included, but not limited to, etherified amino resins, and there may be exemplified methylated amino resins such as methylated urea resin; methylated melamine resins such as Zhan Xin CYMEL 325, CYMEL 327; butyl etherified amino resins, such as butyl etherified urea formaldehyde resins, e.g. CYMEL UB-30-B, ETERMINO 9112-60; butyl etherified melamine resins such as CYMEL MB-98, ETERMINO9217-70; phenylaminoresins, such as the phenylaminomelamine resins CYMEL 659, CYMEL 1123, ETERMINO 94112-75.
In one embodiment, the crosslinking curing agent comprises blocked isocyanate, a phenylamine resin and a methylated amine resin, and the weight ratio is 1:0.2-0.4:0.1-0.3. The inventor discovers that the crosslinking curing agent is used as an auxiliary film forming substance, and the inventor discovers that the flexibility, the transfer printing property and the deep drawing processability of the obtained gloss oil are good while the chemical resistance such as water resistance, salt spray resistance and the like are promoted by adding the phenylamino group with good compatibility with various resins while the processability and the sterilization performance of the product are improved in an auxiliary way through the closed isocyanate with excellent flexibility and curing performance, so that the chemical resistance, the flexibility and the processability of the product are improved in an auxiliary way; and the methyl amino is also added into the cross-linking agent to be used as a liquid coating cross-linking agent, so that the curing speed is fast, and meanwhile, the catalytic stability is improved, and the flexibility balance of a paint film is achieved.
In one embodiment, the solvent is selected from one or more of aromatic hydrocarbon solvents, alcohol ether solvents, ester solvents.
Examples of aromatic hydrocarbon solvents include, but are not limited to, benzene, toluene, meta-xylene, mesitylene, mixed xylenes, ethylbenzene, mixed trimethylbenzene.
Examples of alcohol ether solvents include, but are not limited to, propylene glycol monomethyl ether, ethylene glycol monobutyl ether, ethylene glycol monomethyl ether, propylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monoethyl ether, ethylene glycol monopropyl ether, and propylene glycol monobutyl ether.
Examples of ester solvents include, but are not limited to, EGDA, PGDA, PGDA-1, EGAH, EGAY, DBE, YDBE.
In one embodiment, the weight ratio of the aromatic hydrocarbon solvent, the alcohol ether solvent and the ester solvent is 1:2-3:0.5-1. By using the mixed solvent, the inventor discovers that the coating film has good leveling property, is smooth and has no orange peel, and the coating film has good luster by utilizing the characteristic that the boiling points of different solvents are different, particularly the ester solvents with higher boiling points can exert high dissolving power in the final stage of evaporation while improving the physical and chemical properties of the gloss oil and promoting the dissolving power of the main resin.
In one embodiment, the matting agent is selected from one or more of silica, talc, aluminum stearate, calcium stearate, preferably silica.
In one embodiment, the matting agent has a porosity of 1 to 3mL/g and a particle size of 5 to 10. Mu.m, and examples thereof include fumed silica of the Graves SYLOID series, such as C803 (porosity of 2mL/g and particle size of 3.7 μm), C805 (porosity of 2mL/g and particle size of 5 μm), C807 (porosity of 2mL/g and particle size of 7 μm), C809 (porosity of 2mL/g and particle size of 9 μm), C906 (porosity of 2mL/g and particle size of 6 μm), C907 (porosity of 2mL/g and particle size of 7.2 μm). The silicon dioxide matting agent with high porosity and micron-sized particle size is selected, so that the silicon dioxide matting agent has good suspension property in a solvent-resin system, is not easy to form hard precipitate after long-time storage, has no influence on the curing performance of a coating film, has no side effect on interlayer adhesion, has smooth coating film surface, is wear-resistant, has high transparency, has no fog formation, and has little influence on mechanical properties such as coating film hardness, flexibility and the like. The refractive index between the matting agent and the main resin used in the invention is close, the transparency of the product is obviously improved, the dispersibility is good, the time of the dispersing operation can be shortened in operation, and the method is very beneficial to the degree of convenience for adjusting the matt intensity.
In one embodiment, the preparation method of the gloss oil comprises 2-6wt% of wax; the wax agent is selected from one or more of polyolefin wax, silicon wax and polytetrafluoroethylene wax, preferably polytetrafluoroethylene modified polyethylene wax, and has a particle size of 5-10 μm, and polytetrafluoroethylene modified polyethylene wax of Germany Lu Borun, such as LancomT TF 1780 (particle size of 6 μm) and LancomT TF 1780EF (particle size of 5 μm), can be cited. The inventor finds that by adding the wax, better smoothness is provided, the friction coefficient of the surface of a coating film is reduced, the surface smoothness is improved, the abrasion risk between a can and a can body is reduced, in addition, the addition of the wax is beneficial to the action of a matting agent, especially when high matte is needed, the use of the matting agent with higher content is promoted, and the matting, toughness, smoothness, fineness and scratch resistance are improved.
In one embodiment, the preparation method of the gloss oil further comprises 0-1wt% of an auxiliary agent, preferably 0.3-1wt%. The present invention is not particularly limited to adjuvants, including, but not limited to, wetting agents, defoamers, leveling agents, catalysts, feel modifiers, co-solvents, and the like, for promoting film formation efficiency.
Examples of defoamers include, but are not limited to, foam breaking polymers and polysiloxane solutions, such as Woker VOK-645, pick BYK-141, blue Ke Lu Lencolo 2024W; polyether defoamers, e.g. Tu YileThe Daory is DF-150P; silicon defoamers, such as the Darui DF-135D, DF-173S. The amount of the defoamer is 0.1-0.5wt%.
Examples of leveling agents include, but are not limited to, polyester modified polydimethylsiloxanes such as Lan Kelu Lencolo 3110, boldew BD-3310, pick BYK-310, polyether modified polydimethylsiloxanes such as Pick BYK-330, blue Ke Lu Lencolo 3100, acrylate leveling agents such as Pick BYK354, hai Min St Levaslip 839. The consumption of the leveling agent is 0.1-0.5wt%.
Examples of catalysts include, but are not limited to, blocked acid catalysts such as blocked p-toluene sulfonic acid, blocked dodecylbenzene sulfonic acid, blocked dinonylnaphthalene sulfonic acid, or blocked complex benzene sulfonic acids such as meta-HY-9025, and Australian BD6200. The catalyst is used in an amount of 0.1 to 0.5wt%.
The second aspect of the invention provides a preparation method of the thermosetting adjustable matte gloss oil for metal printing, which comprises the following steps: and (3) stirring the main resin, the crosslinking curing agent and the solvent, adding the preparation raw materials except the main resin, the crosslinking curing agent and the solvent under stirring, and continuing stirring to obtain the gloss oil.
Compared with the prior art, the invention has the following beneficial effects: the invention provides the gloss oil, which can provide a dark and dumb packaging appearance effect, can be designed into a 10-30-degree full-dumb, 30-50-degree half-dumb or 50-70-degree micro-dumb effect, brings more appearance choices for three food can packaging factories, and can provide better external surface scratch resistance of three can paint surfaces compared with a bright product while attracting the attention of consumers; the invention utilizes the action of hydroxyl acrylic ester with high acid value and different curing agents, utilizes the reaction rate of hydroxyl, carboxyl and different curing agents to form a micropore structure, promotes the combination of silicon dioxide and micropores under the drive of wax powder, and promotes the uniform distribution of silicon dioxide, thereby being beneficial to improving extinction, avoiding the influence on fineness and smoothness and improving the processability of gloss oil in metal printing.
Detailed Description
Examples
Examples1
The example provides a gloss oil, and the preparation method of the gloss oil comprises the following steps in percentage by weight: 70wt% of main resin, 15wt% of crosslinking curing agent, 11.3wt% of solvent, 1wt% of matting agent, 2wt% of wax, 0.2wt% of defoaming agent, 0.2wt% of leveling agent and 0.3wt% of catalyst; the main resin is thermosetting type hydroxyl acrylic resin 830A, the crosslinking curing agent is blocked isocyanate BI7961, phenylamine resin CYMEL 1123 and methylated amino resin CYMEL 327, and the weight ratio is 1:0.2:0.1, wherein the solvent is mixed xylene, ethylene glycol monobutyl ether (DBE) with the weight ratio of 1:2:0.5, wherein the delustrant is silicon dioxide C907, the wax agent is polytetrafluoroethylene modified polyethylene wax Lanco TF 1780EF, the defoamer is Pick BYK-141, the flatting agent is blue Ke Lu Lenco 3110, and the catalyst is meta-grinding HY-9025.
The example provides a method for preparing gloss oil, comprising the following steps: and (3) stirring the main resin, the crosslinking curing agent and the solvent, adding the delustrant, the wax agent, the defoaming agent, the leveling agent, the catalyst and continuing stirring to obtain the gloss oil.
Examples2
The example provides a gloss oil, and the preparation method of the gloss oil comprises the following steps in percentage by weight: 68wt% of main resin, 15.3wt% of crosslinking curing agent, 10wt% of solvent, 2wt% of matting agent, 4wt% of wax, 0.2wt% of defoaming agent, 0.2wt% of leveling agent and 0.3wt% of catalyst; the main resin is thermosetting type hydroxyl acrylic resin 830A, the crosslinking curing agent is blocked isocyanate BI7961, phenylamine resin CYMEL 1123 and methylated amino resin CYMEL 327, and the weight ratio is 1:0.4:0.3, wherein the solvent is mixed xylene, ethylene glycol monobutyl ether (DBE) with the weight ratio of 1:3:1, wherein the delustrant is silicon dioxide C907, the wax agent is polytetrafluoroethylene modified polyethylene wax Lanco TF 1780EF, the defoamer is Pick BYK-141, the flatting agent is blue Ke Lu Lencoo 3110, and the catalyst is meta-grinding HY-9025.
The example provides a method for preparing gloss oil, comprising the following steps: and (3) stirring the main resin, the crosslinking curing agent and the solvent, adding the delustrant, the wax agent, the defoaming agent, the leveling agent, the catalyst and continuing stirring to obtain the gloss oil.
Examples3
The example provides a gloss oil, and the preparation method of the gloss oil comprises the following steps in percentage by weight: 68wt% of main resin, 14.3wt% of crosslinking curing agent, 10wt% of solvent, 3wt% of matting agent, 4wt% of wax, 0.2wt% of defoaming agent, 0.2wt% of leveling agent and 0.3wt% of catalyst; the main resin is thermosetting type hydroxyl acrylic resin 830A, the crosslinking curing agent is blocked isocyanate BI7961, phenylamine resin CYMEL 1123 and methylated amino resin CYMEL 327, and the weight ratio is 1:0.3:0.2, wherein the solvent is mixed xylene, ethylene glycol monobutyl ether (DBE) with the weight ratio of 1:2:1, wherein the delustrant is silicon dioxide C907, the wax agent is polytetrafluoroethylene modified polyethylene wax Lanco TF 1780EF, the defoamer is Pick BYK-141, the flatting agent is blue Ke Lu Lencoo 3110, and the catalyst is meta-grinding HY-9025.
The example provides a method for preparing gloss oil, comprising the following steps: and (3) stirring the main resin, the crosslinking curing agent and the solvent, adding the delustrant, the wax agent, the defoaming agent, the leveling agent, the catalyst and continuing stirring to obtain the gloss oil.
Examples4
The example provides a gloss oil, and the preparation method of the gloss oil comprises the following steps in percentage by weight: 64wt% of main resin, 17.3wt% of crosslinking curing agent, 8wt% of solvent, 4wt% of matting agent, 6wt% of wax, 0.2wt% of defoaming agent, 0.2wt% of leveling agent and 0.3wt% of catalyst; the main resin is thermosetting type hydroxyl acrylic resin 830A, the crosslinking curing agent is blocked isocyanate BI7961, phenylamine resin CYMEL 1123 and methylated amino resin CYMEL 327, and the weight ratio is 1:0.3:0.2, wherein the solvent is mixed xylene, ethylene glycol monobutyl ether (DBE) with the weight ratio of 1:2:1, wherein the delustrant is silicon dioxide C907, the wax agent is polytetrafluoroethylene modified polyethylene wax Lanco TF 1780EF, the defoamer is Pick BYK-141, the flatting agent is blue Ke Lu Lencoo 3110, and the catalyst is meta-grinding HY-9025.
The example provides a method for preparing gloss oil, comprising the following steps: and (3) stirring the main resin, the crosslinking curing agent and the solvent, adding the delustrant, the wax agent, the defoaming agent, the leveling agent, the catalyst and continuing stirring to obtain the gloss oil.
Examples5
The example provides a gloss oil, and the preparation method of the gloss oil comprises the following steps in percentage by weight: 64wt% of main resin, 16.3wt% of crosslinking curing agent, 8wt% of solvent, 5wt% of matting agent, 6wt% of wax, 0.2wt% of defoaming agent, 0.2wt% of leveling agent and 0.3wt% of catalyst; the main resin is thermosetting type hydroxyl acrylic resin 830A, the crosslinking curing agent is blocked isocyanate BI7961, phenylamine resin CYMEL 1123 and methylated amino resin CYMEL 327, and the weight ratio is 1:0.3:0.2, wherein the solvent is mixed xylene, ethylene glycol monobutyl ether (DBE) with the weight ratio of 1:2:1, wherein the delustrant is silicon dioxide C907, the wax agent is polytetrafluoroethylene modified polyethylene wax Lanco TF 1780EF, the defoamer is Pick BYK-141, the flatting agent is blue Ke Lu Lencoo 3110, and the catalyst is meta-grinding HY-9025.
The example provides a method for preparing gloss oil, comprising the following steps: and (3) stirring the main resin, the crosslinking curing agent and the solvent, adding the delustrant, the wax agent, the defoaming agent, the leveling agent, the catalyst and continuing stirring to obtain the gloss oil.
Examples6
The example provides a gloss oil, and the preparation method of the gloss oil comprises the following steps in percentage by weight: 64wt% of main resin, 15.3wt% of crosslinking curing agent, 8wt% of solvent, 6wt% of matting agent, 6wt% of wax, 0.2wt% of defoaming agent, 0.2wt% of leveling agent and 0.3wt% of catalyst; the main resin is thermosetting hydroxy acrylic resin 838A, the crosslinking curing agent is blocked isocyanate BI7960, a phenylamine resin CYMEL 659 and a methylated amino resin CYMEL 325, and the weight ratio is 1:0.3:0.2, wherein the solvent is mixed xylene, ethylene glycol monobutyl ether (DBE) with the weight ratio of 1:2:1, wherein the delustrant is silicon dioxide C906, the wax agent is polytetrafluoroethylene modified polyethylene wax Lanco TF 1780, the defoamer is Pick BYK-141, the flatting agent is blue Ke Lu Lenco 3110, and the catalyst is meta-grinding HY-9025.
The example provides a method for preparing gloss oil, comprising the following steps: and (3) stirring the main resin, the crosslinking curing agent and the solvent, adding the delustrant, the wax agent, the defoaming agent, the leveling agent, the catalyst and continuing stirring to obtain the gloss oil.
Evaluation of Performance
The gloss oils provided in examples 1 to 6 were coated on tin, and heat-cured, to prepare test pieces, and the following experiments were performed.
1. Gloss level:
experimental equipment: sample wafer and gloss meter
Experimental procedure: cutting the test piece into a size of about 15 multiplied by 15cm, starting a glossmeter button, correcting according to the correction requirement of high gloss and low gloss, placing a glossmeter on the test piece, reading data on a display screen, namely 60-degree gloss of a coating film, repeating the test for three times, taking an average value, and obtaining the result shown in Table 1.
2. Fineness:
experimental equipment: sample to be tested, fineness gauge (0-25 um), solvent
Experimental procedure: placing the fineness gauge on a horizontal plane, fully cleaning, placing a sample, slightly excessively filling the position of the graduation at the front end of the groove by about 25um, scraping the sample along the groove by using a scraper, wherein the scraper is vertical to the groove, exerting force on two sides evenly, continuously scraping at one time without interruption, taking up the fineness plate after scraping to observe the surface of the fineness plate against a fluorescent lamp tube immediately, preferably forming an angle of 30-45 DEG with eyes, and recording readings when particles in a light observation groove are uniformly exposed; notice that: 1. ensuring the fineness gauge and the scraper to be clean and free from concave damage; 2. operate in response to good light sources; 3. the fineness is read out within 10-15 seconds, otherwise, dust is easy to fall on the fineness to cause misjudgment; 4. if the sample is too thick, it may be diluted with a matching solvent, monomer, etc.; judgment standard: 1. if the individual particles are exposed on other graduation lines, the range of the readings and the adjacent graduation lines is not longer than three particles, if the range of the readings exceeds the range of the adjacent graduation lines, the reading is the last graduation, for example, the reading of the concentration point is 10 mu m, but three particles are arranged between 10 mu m and 12.5 mu m, and the fineness of the paint is 12.5 mu m; 2. the ink fineness requirement is generally the concentration point fineness, and the individual particles are not necessary, and the results are shown in Table 1.
3. Hand feeling slip degree: the sample piece was applied with a smooth surface by hand, and the results are shown in Table 1.
4. Slip degree:
experimental equipment: sample wafer, sliding instrument and sliding hammer with smooth steel ball
Experimental procedure: placing a test piece with the diameter of 28 multiplied by 15mm on a platform of a sliding instrument for fixing, placing a sliding hammer, connecting the sliding hammer with a traction shaft by a hook ring, keeping a connected spring unstressed, enabling the connected spring to be in a natural state, enabling a key to enter a test interface, and starting an experiment, wherein the static friction time is 6 seconds, and then the dynamic friction time is 42 seconds; when the sliding hammer stops moving, the display displays a static friction coefficient Us, a dynamic friction coefficient Ud, us as a reference, and the Ud is recorded as a friction coefficient value required by Us; notice that: the surface of the sample to be measured is flat, and can not have the symptoms of protruding and sinking, and the result is shown in table 1.
5. Scratch resistance:
experimental equipment: sample wafer to be inspected, scratch instrument and weight
Experimental procedure: cutting a sample into pieces (about 13X 5 cm) according to the size of a SCRATCH meter, slightly taking a super needle shaft part, putting the sample under two screws, bolting, slightly putting down a needle shaft, selecting weight according to the specification of a product, putting the sample into a round bar ON a needle hammer, turning ON a machine 'POWER' at an 'ON' position, turning ON a red lamp, moving an 'AUTO' part to an 'SCRATCH' position, and observing an ammeter pointer (the ammeter pointer will move after being scratched when being electrified, and if no SCRATCH exists, the pointer is at a '0' position); judgment standard: the weight of the film when scratched, which is taken as the critical point of scratch resistance of the film, the scratch value is the maximum weight taken when the film is not scratched, and not the weight when scratched, and the results are shown in Table 1.
TABLE 1
The test result shows that the gloss oil provided by the invention can provide different matte effects, and the cured gloss oil also has good smoothness, smoothness and scratch resistance.
Claims (2)
1. The thermosetting adjustable matte gloss oil for metal printing is characterized by comprising the following components in percentage by weight: 60-70wt% of main resin, 10-20wt% of crosslinking curing agent, 8-15wt% of solvent and 1-6wt% of matting agent; the main resin is thermosetting hydroxy acrylic resin; the viscosity of the thermosetting type hydroxyl acrylic resin is 40-100 seconds/Grignard at 25 ℃, and the acid value is 10-20 mgKOH/g; the curing cross-linking agent comprises closed isocyanate, phenylamine resin and methylated amino resin; the weight ratio of the blocked isocyanate to the benzylamino resin to the methylated amino resin is 1: (0.2-0.4): (0.1-0.3); the solvent is aromatic hydrocarbon solvent, alcohol ether solvent or ester solvent; the weight ratio of the aromatic hydrocarbon solvent to the alcohol ether solvent to the ester solvent is 1: (2-3): (0.5-1); the matting agent is fumed silica, the porosity is 2mg/L, and the particle size is 6 mu m or 7.2 mu m; the preparation method of the gloss oil comprises the following steps of 2-6wt% of wax agent and 0-1wt% of auxiliary agent; the wax agent is polytetrafluoroethylene modified polyethylene wax LancomM TF 1780; the auxiliary agent is an antifoaming agent, a leveling agent and a catalyst, wherein the antifoaming agent is Pick BYK-141, the leveling agent is blue Ke Lu Lencolo 3110, and the catalyst is meta-grinding HY-9025.
2. A method of preparing a heat curable adjustable matte gloss oil for metal printing according to claim 1, comprising: and after stirring the main resin, the crosslinking curing agent and the solvent, adding the preparation raw materials except the main resin, the crosslinking curing agent and the solvent under stirring, and continuing stirring to obtain the gloss oil.
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| CN105153923A (en) * | 2015-08-28 | 2015-12-16 | 东来涂料技术（上海）有限公司 | Low-VOC (volatile organic compounds) anti-scratch transparent matte varnish and preparation method thereof |
| JP2018070847A (en) * | 2016-11-04 | 2018-05-10 | サカタインクス株式会社 | Matte coating agent, matte coated layer and laminate film |
| CN111320902A (en) * | 2020-04-13 | 2020-06-23 | 佛山市儒林化工有限公司 | Low-formaldehyde migration gloss oil for packaging tin-plate food cans and preparation method thereof |
| CN111454631A (en) * | 2020-05-09 | 2020-07-28 | 佛山市儒林化工有限公司 | Cool and dazzling color-changing effect gloss oil and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153923A (en) * | 2015-08-28 | 2015-12-16 | 东来涂料技术（上海）有限公司 | Low-VOC (volatile organic compounds) anti-scratch transparent matte varnish and preparation method thereof |
| JP2018070847A (en) * | 2016-11-04 | 2018-05-10 | サカタインクス株式会社 | Matte coating agent, matte coated layer and laminate film |
| CN111320902A (en) * | 2020-04-13 | 2020-06-23 | 佛山市儒林化工有限公司 | Low-formaldehyde migration gloss oil for packaging tin-plate food cans and preparation method thereof |
| CN111454631A (en) * | 2020-05-09 | 2020-07-28 | 佛山市儒林化工有限公司 | Cool and dazzling color-changing effect gloss oil and preparation method thereof |
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