CN115403997A - Solvent-free ultraviolet curing coating composition and application thereof - Google Patents
Solvent-free ultraviolet curing coating composition and application thereof Download PDFInfo
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- CN115403997A CN115403997A CN202211226435.9A CN202211226435A CN115403997A CN 115403997 A CN115403997 A CN 115403997A CN 202211226435 A CN202211226435 A CN 202211226435A CN 115403997 A CN115403997 A CN 115403997A
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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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- 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
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- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Abstract
The invention provides a solvent-free ultraviolet curing coating composition, which comprises 40-80 parts of light curing resin, 35-80 parts of difunctional light curing monomer, 1-8 parts of trifunctional light curing monomer, 2-10 parts of photoinitiator, 0-4 parts of auxiliary agent and 2-10 parts of inorganic filler in parts by weight, and the solvent-free ultraviolet curing coating composition can meet the flexibility requirement when used as a PVC floor coating composition through the synergistic cooperation of resins with different functionality degrees and monomers, and has higher hardness, wear resistance, scratch resistance, stain resistance and good leveling appearance; in addition, by matching the inorganic fillers with different particle sizes, the matte effect is realized, and other properties, particularly the leveling appearance, can be kept unaffected.
Description
Technical Field
The invention relates to the field of ultraviolet curing coating compositions, in particular to a solvent-free ultraviolet curing coating composition and application thereof.
Background
The PVC floor coating is a protective film coated on a PVC floor, and can provide protection and functionality, such as beauty, extinction, wear resistance, chemical reagent resistance and the like. The PVC floor coating needs to meet the flexibility of a PVC floor, and also needs to meet the performances of high hardness, high wear resistance, good leveling appearance and the like. In order to solve the above problems, in recent years, many manufacturers have made various PVC floor coatings with different properties for different application scenarios. Such as solvent-resistant PVC floor coating, matte PVC floor coating and the like.
However, most of the above-mentioned coating materials are solvent-based coating materials, and have higher VOC emission and certain environmental pollution compared with solvent-free UV coating materials. However, the solvent-free UV coating in the prior art needs to have both proper construction viscosity and properties such as flexibility, hardness, scratch resistance, and appearance, and has high technical difficulty, and therefore, those skilled in the art need to solve these problems.
Disclosure of Invention
In order to overcome the problems of the prior art, the invention provides a solvent-free ultraviolet curing coating composition, which does not contain a solvent, achieves the purposes of simultaneously meeting the workability, flexibility, hardness, scratch resistance and stain resistance of a PVC floor coating by adjusting the types and content collocation of monomers, resins and auxiliaries with different functionalities, and has good appearance required by a floor coating.
In order to achieve the purpose, the invention provides a solvent-free ultraviolet curing coating composition which comprises, by weight, 40-80 parts of a light curing resin, 35-80 parts of a bifunctional light curing monomer, 1-8 parts of a trifunctional light curing monomer, 2-10 parts of a photoinitiator, 0-4 parts of an auxiliary agent and 2-10 parts of an inorganic filler.
In one embodiment of the present invention, the addition amount of the photocurable resin is 40 to 80 parts by weight, specifically 40 parts, 45 parts, 48 parts, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, 65 parts, 70 parts, 75 parts or 80 parts by weight, and when the addition amount is less than 40 parts by weight, the stain resistance of the coating composition after curing may be deteriorated, and when the addition amount of the resin is more than 80 parts by weight, the viscosity of the coating composition containing the resin is too high, the workability is deteriorated, the leveling property of the coating composition is deteriorated, the appearance of the coating composition after being cured by ultraviolet light is greatly affected, and when the addition amount of the resin is too high, the flexibility of the coating composition after curing is deteriorated, and cracking is easily caused.
In one embodiment of the present invention, the addition amount of the photocurable resin is preferably 45 to 60 parts. In a preferred addition amount range, the scratch resistance and hardness of the coating composition containing the light-cured resin in the weight part range can be further improved on the basis of keeping the flexibility level after curing.
In one embodiment of the present invention, the light curable resin is selected from one or more of urethane acrylate resin, polyester acrylate resin, polycarbonate acrylate resin, and epoxy acrylate resin, and the resin can provide good flexibility.
In one embodiment of the present invention, the photocurable resin is preferably a urethane acrylate resin. The polyurethane acrylate resin can further improve the arrangement effect of the matte powder in the coating composition containing the polyurethane acrylate resin on the basis of good flexibility.
In one embodiment of the present invention, the urethane acrylate resin comprises at least one of a trifunctional urethane acrylate resin and a greater than trifunctional urethane acrylate resin. The trifunctional polyurethane acrylic resin can be used as a main resin component to provide flexibility of the coating composition, is good in compatibility with matte powder, and can provide a good matte powder arrangement effect, so that the cured coating composition has a matte effect and a good leveling appearance, and the crosslinking density of the polyurethane acrylic resin with higher functionality can be further adjusted to obtain higher hardness and a stain-resistant effect.
In one embodiment of the present invention, the greater than trifunctional urethane acrylate resin may be a hexafunctional to nonafunctional urethane acrylate resin. Specifically, it may be selected from hexafunctional urethane acrylic resin, heptafunctional urethane acrylic resin, octafunctional urethane acrylic resin, and nonafunctional urethane acrylic resin.
In one embodiment of the present invention, the photocurable resin comprises at least two urethane acrylate resins, preferably two urethane acrylate resins.
In one embodiment of the present invention, the photocurable resin comprises at least three, preferably three, urethane acrylate resins, preferably three urethane acrylate resins.
In one embodiment of the present invention, the photocurable resin comprises at least one trifunctional urethane acrylate resin and at least one greater than trifunctional urethane acrylate resin.
In one embodiment of the present invention, the photocurable resin comprises at least one trifunctional polyurethane acrylic resin and at least one hexafunctional polyurethane acrylic resin.
In one embodiment of the present invention, the weight part ratio of the trifunctional polyurethane acrylic resin to the hexafunctional polyurethane acrylic resin is 8: (2.5-4), specifically for example, 8. The addition of the hexafunctional polyurethane acrylic resin in the proportion can further improve the crosslinking density of the coating composition after curing, is beneficial to improving the hardness and the stain resistance of the coating composition after curing, has higher compatibility with the matte powder, can further improve the dispersibility and the arrangement effect of the matte powder after being matched with the trifunctional polyurethane acrylic resin, and improves the appearance of the coating composition after curing.
In one embodiment of the present invention, the photocurable resin comprises at least one trifunctional urethane acrylic resin and at least one nine-functional urethane acrylic resin.
In one embodiment of the present invention, the weight parts ratio of the trifunctional polyurethane acrylic resin to the nine-functional polyurethane acrylic resin is (5-16): 1, specifically for example, 16. The nine-functional polyurethane acrylic resin in the proportion is added, so that the hardness and the scratch resistance of the coating composition can be further improved.
In one embodiment of the present invention, the photocurable resin comprises at least one trifunctional urethane acrylic resin and at least two more than trifunctional urethane acrylate resins.
In one embodiment of the present invention, the photocurable resin comprises the group consisting of at least one trifunctional polyurethane acrylic resin, at least one hexafunctional polyurethane acrylic resin, and at least one nonafunctional polyurethane acrylic resin.
In one embodiment of the invention, the ratio of the parts by weight of the trifunctional, hexafunctional and nonafunctional polyurethane acrylic resins is 8: (2.4-3.7): (0.1-0.3), the polyurethane acrylic resin with three kinds of functionality is matched in the proportion range, so that on one hand, the matte powder has a better dispersion effect, the leveling appearance of the coating composition is better after curing, and on the other hand, the coating composition has better stain resistance, hardness and abrasion resistance after curing.
In one embodiment of the present invention, the difunctional photo-curable monomer is added in an amount of 35 to 80 parts by weight.
In one embodiment of the present invention, the difunctional photocurable monomer is added in an amount of 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts or 80 parts by weight.
When the amount of the bifunctional photocurable monomer added exceeds 80 parts, the coating composition becomes poor in flexibility after curing, the coating cracks as the substrate deforms, and the scratch resistance is significantly reduced; when the amount of the bifunctional monomer added is less than 35 parts, the viscosity of the coating composition becomes too high to be processed, the leveling appearance becomes poor, and the flexibility of the coating composition after curing becomes poor.
In one embodiment of the present invention, the difunctional photocurable monomer is preferably added in an amount of 40-50 parts by weight.
In one embodiment of the present invention, the amount of the bifunctional photocurable monomer added is further preferably 45 to 50 parts by weight.
In one embodiment of the present invention, the bifunctional photo-curable monomer comprises at least one functional monomer for reducing the viscosity of the coating composition and at least one functional monomer for increasing the curing speed of the coating composition, and the two functional monomers may be the same monomer or different monomers.
In an embodiment of the present invention, when the functional monomers included in the bifunctional photocurable monomer are the same monomer, the amount of the functional monomer is 35 to 80 parts, and further 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts, or 80 parts by weight.
Specifically, the functional monomer for reducing the viscosity of the coating composition is mainly used for adjusting the construction viscosity of the coating composition and can participate in curing; the functional monomer for improving the curing speed has short chain segment, more total functional groups in unit mass, high curing speed and lower curing energy required under the condition of a production line with the same length, and can further improve the hardness of the coating composition after the coating composition is cured.
In one embodiment of the present invention, the functional monomer for reducing the viscosity of the coating composition has a viscosity ranging from 1 to 300mPa · s.
In one embodiment of the present invention, the bifunctional photo-curing monomer is selected from at least one of dipropylene glycol diacrylate (abbreviated as "DPGDA"), diethylene glycol diacrylate (abbreviated as "DEGDA"), triethylene glycol diacrylate (abbreviated as "TEGDA"), tripropylene glycol diacrylate (abbreviated as "TPGDA"), 1, 4-butanediol diacrylate (abbreviated as "BDDA"), 1, 6-hexanediol diacrylate (abbreviated as "HDDA"), neopentyl glycol diacrylate (abbreviated as "NPGDA"), 2 (propoxylated) neopentyl glycol diacrylate (abbreviated as "NPG (PO) 2 DA"), or ethoxylated bisphenol a diacrylate (abbreviated as "BPA (EO) nDA (n = 6-20)").
In one embodiment of the present invention, the bifunctional photocurable monomer is selected from at least two of DPGDA, DEGDA, TEGDA, TPGDA, BDDA, HDDA, NPGDA, NPG (PO) 2DA, or BPA (EO) nDA (n = 6-20), preferably, the bifunctional photocurable monomer is selected from two, three, or four of DPGDA, DEGDA, TEGDA, TPGDA, BDDA, HDDA, NPGDA, NPG (PO) 2DA, or BPA (EO) nDA (n = 6-20). .
In one embodiment of the present invention, the functional monomer that reduces the viscosity of the coating composition is selected from at least one of DPGDA, DEGDA, TEGDA, TPGDA, BDDA, HDDA, NPGDA, or NPG (PO) 2 DA.
In one embodiment of the present invention, the functional monomer for reducing the viscosity of the coating composition is preferably at least one of BDDA, HDDA, TPGDA or DPGDA.
In one embodiment of the present invention, the functional monomer for increasing curing speed is at least one selected from TPGDA, NPGDA, TEGDA, DEGDA, BPA (EO) nDA (n = 6-20), or BDDA.
In one embodiment of the present invention, the curing speed-improving functional monomer is preferably at least one of DPGDA, EDGDA, TPGDA, BPA (EO) nDA (n = 6-20), or BDDA.
In one embodiment of the present invention, the functional monomer for increasing curing speed is further preferably at least one of DPGDA, BDDA, BPA (EO) nDA (n = 6-20).
In one embodiment of the present invention, TPGDA, NPGDA, TEGDA, DEGDA, BDDA may be used as a functional monomer to both reduce the viscosity of the coating composition and increase the curing speed.
In one embodiment of the present invention, when the functional monomer for reducing the viscosity of the coating composition and the functional monomer for increasing the curing speed are not the same monomer, the ratio of the parts by mass of the functional monomer for reducing the viscosity of the coating composition and the functional monomer for increasing the curing speed is 5: (3-7).
In one embodiment of the present invention, the trifunctional photo-curable monomer is added in an amount of 1 to 8 parts by weight.
In one embodiment of the present invention, the amount of the trifunctional photo-curable monomer added is 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts or 8 parts by weight.
The trifunctional monomer mainly plays a role in adjusting the crosslinking density of a product, and when the addition amount is less than 1 part, the stain resistance can be reduced, and when the addition amount is more than 8 parts, the film can be cracked along with the deformation of a base material.
In one embodiment of the present invention, the trifunctional photocurable monomer is preferably added in an amount of 1-6 parts by weight.
In one embodiment of the present invention, the trifunctional photocurable monomer is selected from at least one of pentaerythritol triacrylate (abbreviated as "PET 3A"), trimethylolpropane triacrylate (abbreviated as "TMPTA"), and (3) ethoxylated trimethylolpropane triacrylate (abbreviated as "TMP3 EOTA").
In one embodiment of the present invention, the ratio of the mass parts of the bifunctional photocurable monomer to the trifunctional photocurable monomer is preferably (16-50): 1.
in one embodiment of the present invention, the ratio of the difunctional photocurable monomer to the trifunctional photocurable monomer in parts by mass is 16.
In one embodiment of the present invention, the ratio of the mass parts of the bifunctional photocurable monomer to the trifunctional photocurable monomer is further preferably (16-37): 1.
in an embodiment of the present invention, the amount of the photoinitiator added is 6 to 8 parts by weight, and specifically, the photoinitiator may be: 6 parts, 6.5 parts, 7 parts, 7.5 parts or 8 parts.
In one embodiment of the present invention, the photoinitiator comprises at least an α -hydroxyalkanone type photoinitiator and an acyl oxide type initiator. The two initiators are used together, so that the curing speed can be further improved, and the coating composition can be cured more completely under the same exposure energy.
In one embodiment of the invention, the α -hydroxyalkanone photoinitiator is selected from at least one of the photoinitiators 160, 1173, 184, MBF.
In one embodiment of the present invention, the acyl oxide initiator is at least one selected from the group consisting of a photoinitiator TPO, a photoinitiator 819, and a photoinitiator 1800.
In one embodiment of the present invention, the addition amount of the auxiliary is 0 to 3 parts by weight, specifically, 0 part, 1 part, 2 parts or 3 parts.
In one embodiment of the present invention, the adjuvant is selected from at least one of a wetting adjuvant, a dispersant, a defoamer.
In one embodiment of the invention, the wetting aid is selected from one or more of BYK-306, BYK-3505, TEGO270, TEGO 280, BYK 302, BYK 342 or BYK 354.
In one embodiment of the invention, the dispersant is selected from one or more of TEGO2700, TEGO 610, TEGO700, BYK 1156, BYK 103, or BYK 154.
In one embodiment of the invention, the antifoaming agent is selected from one or more of BYK163, TEGO 910, TEGO920, BYK 051, BYK 141 or BYK 354.
In one embodiment of the present invention, the UV coating composition may further comprise an inorganic filler to achieve a matte effect of the coating composition.
In one embodiment of the present invention, the inorganic filler is added in an amount of 2 to 10 parts by weight, specifically, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts. When the amount of the additive is less than 2 parts, the matte effect is difficult to achieve, and when the amount of the additive exceeds 10 parts, the coating composition generates thixotropy, and cannot be applied.
In one embodiment of the present invention, the inorganic filler is further preferably added in an amount of 3 to 7 parts by weight.
In one embodiment of the present invention, the inorganic filler is at least one selected from talc and silica.
In one embodiment of the present invention, the inorganic filler includes at least two particle sizes, which may be specifically referred to as a large particle size inorganic filler and a small particle size inorganic filler. The inorganic fillers with two particle sizes are used in combination, so that a good leveling effect can be obtained while a matte effect is realized, and the cured coating composition has a good leveling appearance.
In one embodiment of the present invention, the small particle size inorganic filler has a particle size in the range of 1.3 μm to 1.5 μm, and the inorganic filler in this particle size range can provide a matte effect to the coating composition.
In one embodiment of the present invention, the small-particle size inorganic filler is preferably added in an amount of 2 to 7 parts by weight, specifically, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts or 7 parts.
In one embodiment of the invention, the smaller particle size inorganic filler is selected from silica.
In one embodiment of the present invention, the small-particle size inorganic filler is further preferably at least one selected from the group consisting of E-1011 and E-220A.
In one embodiment of the present invention, the large-particle inorganic filler has a particle size ranging from 2.4 to 3.5 μm, which can improve the leveling property of the coating composition, thereby improving the appearance of the matte coating composition.
In one embodiment of the present invention, the large particle size inorganic filler is preferably added in an amount of 0.1 to 4 parts by weight, specifically, 0.1 part, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts or 4 parts.
In one embodiment of the present invention, the large particle size inorganic filler is at least one selected from silica and surface-modified silica.
In one embodiment of the present invention, the large-particle size inorganic filler is further preferably at least one selected from OK412, OK520, AZ200, or AZ 360.
In one embodiment of the present invention, the ratio of the parts by mass of the small-particle-size inorganic filler to the parts by mass of the large-particle-size inorganic filler is more preferably (2 to 7): 2.
the invention also provides a preparation method of the UV coating composition, which specifically comprises the following steps: firstly, the light-cured resin, the difunctional light-cured monomer, the photoinitiator, the auxiliary agent and the filler are mixed and stirred uniformly.
In one embodiment of the invention, the stirring speed of the preparation method is 500 to 2000rpm.
In one embodiment of the invention, the preparation method takes 30-120min.
In an embodiment of the present invention, the preparation method may further include a filtration and purification step, wherein the filtration step specifically includes: the uniformly mixed coating composition was filtered through a 300 mesh filter cloth.
It is another object of the present invention to provide the use of the solvent-free uv curable coating composition as a PVC floor coating.
Has the beneficial effects that:
1. according to the invention, through the synergistic cooperation of the resins with different functionalities and the monomers, the PVC floor coating composition meets the flexibility requirement of the PVC floor coating composition, and has high hardness, wear resistance, scratch resistance, stain resistance and good leveling appearance.
2. The inorganic filler with different particle sizes, the resin with different functionality, the monomer, the auxiliary agent and the like are added to perform synergistic action, so that the coating composition has a good leveling appearance effect while realizing a matte effect, and in addition, the performances such as flexibility, hardness, wear resistance, scratch resistance, stain resistance and the like can reach better levels.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
The raw materials used in the following examples are specifically as follows:
resin A: trifunctional urethane acrylate resin, sadoma CN9783
B, resin: hexa-functional urethane acrylate resin, jiangxi Kunlong HM-366
C, resin: nine-dimensional Photomer6008, a nine-functional urethane acrylate resin
A monomer: bifunctional monomer DPGDA
B, monomer: difunctional monomer BPA10EODA
C monomer: trifunctional monomer PET3A
A, filling material: small-particle-size delustering inorganic filler E-1101
B, filling material: large-particle-size delustering inorganic filler OK412
A, a photoinitiator: photoinitiator 184
B, photoinitiator: photoinitiator TPO
Dispersing agent: TEGO2700
Defoaming agent: BYK163 wetting aid: BYK3505
Example 1
The coating composition provided by this embodiment includes, by weight, 35 parts of a resin a, 5 parts of a resin B, 25 parts of a monomer a, 10 parts of a monomer B, 1 part of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 2
The coating composition provided by this embodiment includes, by weight, 40 parts of a resin a, 5 parts of a resin B, 35 parts of a monomer a, 10 parts of a monomer B, 2 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 3
The coating composition provided by this embodiment includes, by weight, 45 parts of a resin a, 5 parts of a resin B, 40 parts of a monomer a, 8 parts of a monomer B, 4 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 4
The coating composition provided by this embodiment includes, by weight, 50 parts of a resin a, 10 parts of a resin B, 40 parts of a monomer a, 10 parts of a monomer B, 6 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 5
The coating composition provided by this embodiment includes, by weight, 70 parts of a resin a, 10 parts of a resin B, 60 parts of a monomer a, 10 parts of a monomer B, 8 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 6
The coating composition provided by this embodiment includes, by weight, 35 parts of a resin a, 5 parts of a resin B, 25 parts of a monomer a, 10 parts of a monomer B, 1 part of a monomer C, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 7
The coating composition provided by this embodiment includes, by weight, 35 parts of a resin a, 5 parts of a resin B, 25 parts of a monomer a, 10 parts of a monomer B, 1 part of a monomer C, 2 parts of a filler a, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 8
The coating composition provided by this embodiment includes, by weight, 35 parts of a resin a, 15 parts of a resin B, 40 parts of a monomer a, 8 parts of a monomer B, 4 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 9
The coating composition provided by this embodiment includes, by weight, 38 parts of a resin a, 12 parts of a resin B, 40 parts of a monomer a, 8 parts of a monomer B, 4 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 10
The coating composition provided by this embodiment includes, by weight, 37 parts of a resin a, 12 parts of a resin B, 1 part of a resin C, 40 parts of a monomer a, 8 parts of a monomer B, 4 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 11
The coating composition provided by this embodiment includes, by weight, 35 parts of a resin a, 12 parts of a resin B, 3 parts of a resin C, 40 parts of a monomer a, 8 parts of a monomer B, 4 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 12
The coating composition provided by this embodiment includes, by weight, 45 parts of a resin a, 5 parts of a resin C, 40 parts of a monomer a, 8 parts of a monomer B, 4 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 13
The coating composition provided by this embodiment includes, by weight, 50 parts of a resin a, 10 parts of a resin B, 30 parts of a monomer a, 20 parts of a monomer B, 6 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 14
The coating composition provided by this embodiment includes, by weight, 50 parts of a resin a, 10 parts of a resin B, 20 parts of a monomer a, 30 parts of a monomer B, 6 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 15
The coating composition provided by this embodiment includes, by weight, 50 parts of a resin a, 10 parts of a resin B, 25 parts of a monomer a, 28 parts of a monomer B, 3 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 16
The coating composition provided by this embodiment includes, by weight, 50 parts of a resin a, 10 parts of a resin B, 32.5 parts of a monomer a, 22 parts of a monomer B, 1.5 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 17
The coating composition provided by this embodiment includes, by weight, 42 parts of a resin a, 13 parts of a resin B, 5 parts of a resin C, 32.5 parts of a monomer a, 22 parts of a monomer B, 1.5 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Example 18
The coating composition provided by this embodiment includes, by weight, 50 parts of a resin a, 10 parts of a resin B, 50 parts of a monomer a, 6 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Comparative example 1
The coating composition provided by the comparative example comprises 80 parts by weight of resin A, 10 parts by weight of resin B, 35 parts by weight of monomer A, 10 parts by weight of monomer B, 2 parts by weight of monomer C, 5 parts by weight of filler A, 2 parts by weight of filler B, 5 parts by weight of photoinitiator A, 2 parts by weight of photoinitiator B, 0.05 part by weight of defoaming agent, 0.5 part by weight of dispersant and 3 parts by weight of wetting assistant.
Comparative example 2
The coating composition provided by this embodiment includes, by weight, 35 parts of a resin a, 5 parts of a resin B, 75 parts of a monomer a, 10 parts of a monomer B, 8 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Comparative example 3
The coating composition provided by this embodiment includes, by weight, 40 parts of a resin a, 5 parts of a resin B, 35 parts of a monomer a, 10 parts of a monomer B, 2 parts of a monomer C, 5 parts of a filler a, 2 parts of a filler B, 1 part of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Comparative example 4
The coating composition provided by this embodiment includes, by weight, 35 parts of a resin a, 5 parts of a resin B, 25 parts of a monomer a, 10 parts of a monomer B, 1 part of a monomer C, 10 parts of a filler a, 10 parts of a filler B, 5 parts of a photoinitiator a, 2 parts of a photoinitiator B, 0.05 part of a defoaming agent, 0.5 part of a dispersant, and 3 parts of a wetting assistant.
Preparing a UV coating composition sample: examples 1-18 and comparative examples 1-3 were each mixed well, filtered using 300 mesh filter cloth, then roller coated on PVC flooring using RDS10 wire bar, curing energy UVA600mj/cm 2 。
The performance evaluation method comprises the following steps:
scratch resistance test: coating the coating composition on a PVC floor by using an RDS10 # wire bar, wherein the coating composition is coated once at 600mj/cm 2 The UVA energy cure allowed the coating composition to cure completely, and after cooling, the coating composition was scratched through the test pencil using Ericsson Typ318 hardness, load 10N, and BOSCH test head (0.75 mm diameter) to show no paint film loss, preferably no paint film loss, with slight marks as good and poor. The performance requirements are as follows: good is pass.
Flexibility: the RDS10 line bar is used for coating the coating composition on the PVC floor, the PVC floor is folded in half and then restored after curing, no obvious crack occurs in the coating composition, and the appearance is not obviously changed. Folding the PVC floor by 180 degrees, recovering and spreading, and repeating for five times. The surface had no cracks and had excellent flexibility, the surface had cracks which were difficult to identify and had good flexibility, and the surface had severe damage and had poor flexibility. The performance requirements are as follows: good is pass.
Viscosity: mixing and stirring uniformly, and testing with rotational viscometer after filtering with filter bag, wherein the viscosity is no more than 350mpa · s.
Friction resistance: after curing and cutting, the cloth is placed on a wearing machine, 9N is loaded on the rubbing cloth, the rubbing stroke is 104mm,30 times/min reciprocating times are 5000 times (experimental determination upper limit), the base material exposure phenomenon does not occur, the appearance is not obviously changed and is excellent in wear resistance, and the appearance is changed but is not obviously excellent in wear resistance; the loss of the base material and the falling off of the painted surface are poor
Stain resistance: after curing, the ink is written by an oil marker pen, the ink can be erased to be excellent in 30min, the ink can be erased to be good in 30min, the ink can be erased to be poor in 20min, and the ink can be obviously seen to be poor in 20min. The performance requirements, good pass.
Hardness: the pencil hardness, the load is 500g, the pencil hardness is more than or equal to 6H, the pencil hardness is 5H, the pencil hardness is less than 5H, and the performance requirement is more than or equal to 5H.
Appearance: the surface is smooth, has no unevenness and no spots, has good appearance, has unevenness and spots which are not easy to be detected, and otherwise has poor appearance. It is required to be at least good.
Degree of dumb: the gloss tester measures 60 ℃ performance requirements: the gloss is less than 10.
The performance test results are shown in table 1:
TABLE 1
According to the test results of examples 1 to 17 and comparative examples 1 to 4, the solvent-free UV-curable coating composition provided by the invention can achieve good scratch resistance, abrasion resistance, stain resistance, hardness of more than 5H, good flexibility, viscosity of less than 300mpa · s, proper construction viscosity, and good appearance while gloss is less than 10 degrees even after inorganic filler is added.
The applicant states that the present invention is illustrated by the above examples of the coating composition of the present invention and its applications, but the present invention is not limited to the above examples, i.e. it is not meant that the present invention must rely on the above examples to be practiced. It will be apparent to those skilled in the art that any modifications to the present invention, equivalent substitutions of selected materials and additions of auxiliary components, selection of specific forms, etc., are within the scope and disclosure of the present invention.
Claims (11)
1. The solvent-free ultraviolet curing coating composition is characterized by comprising, by weight, 40-80 parts of light curing resin, 35-80 parts of difunctional light curing monomer, 1-8 parts of trifunctional light curing monomer, 2-10 parts of photoinitiator, 0-4 parts of auxiliary agent and 2-10 parts of inorganic filler.
2. The solventless uv curable coating composition according to claim 1 wherein the photocurable resin is selected from one or more of a urethane acrylate resin, a polyester acrylate resin, a polycarbonate acrylate resin, an epoxy acrylate resin.
3. The solventless uv curable coating composition according to claim 2 wherein the photocurable resin comprises at least two urethane acrylate resins.
4. A solvent-free uv curable coating composition according to claim 3, wherein the photo-curable resin is selected from the group consisting of at least one tri-functional urethane acrylic resin and at least one more than tri-functional urethane acrylate resin.
5. The solventless uv curable coating composition according to claim 4 wherein the higher than trifunctional urethane acrylate resin is selected from a hexafunctional urethane acrylic resin, a heptafunctional urethane acrylic resin, an octafunctional urethane acrylic resin or a nonafunctional urethane acrylic resin.
6. The solventless ultraviolet curing coating composition according to claim 1, wherein the difunctional photocurable monomer comprises a functional monomer for reducing the viscosity of the coating composition and a functional monomer for increasing the curing speed, and the functional monomer for reducing the viscosity of the coating composition and the functional monomer for increasing the curing speed may be the same monomer or different monomers.
7. The solvent-free uv-curable coating composition according to claim 1, wherein the ratio of the mass parts of the difunctional photocurable monomer to the trifunctional photocurable monomer is (16-50): 1.
8. the solventless uv curable coating composition according to claim 1 wherein the adjuvant is selected from at least one of wetting aids, dispersants, defoamer wetting aids.
9. The solventless uv curable coating composition according to claim 6 wherein the inorganic filler comprises two particle sizes, one small particle size inorganic filler having a particle size in the range of 1.3 to 1.5 μm and the other particle size inorganic filler having a particle size in the range of 2.4 to 3.5 μm.
10. The solvent-free ultraviolet-curable coating composition according to claim 7, wherein the ratio of the added parts by mass of the small-particle-size inorganic filler to the added parts by mass of the large-particle-size inorganic filler is (2-7): 2.
11. Use of the solventless uv curable coating composition of claim 1 as a PVC floor coating.
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| CN117820947A (en) * | 2023-12-28 | 2024-04-05 | 上海飞凯材料科技股份有限公司 | Solvent-free ultraviolet curing material composition and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109679488A (en) * | 2018-12-28 | 2019-04-26 | 上海维凯光电新材料有限公司 | A kind of high-temperature resistant, cracking resistance ultraviolet cured paint composition and preparation method thereof |
| CN112795285A (en) * | 2020-12-28 | 2021-05-14 | 中海油常州涂料化工研究院有限公司 | Ultraviolet curing coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109679488A (en) * | 2018-12-28 | 2019-04-26 | 上海维凯光电新材料有限公司 | A kind of high-temperature resistant, cracking resistance ultraviolet cured paint composition and preparation method thereof |
| CN112795285A (en) * | 2020-12-28 | 2021-05-14 | 中海油常州涂料化工研究院有限公司 | Ultraviolet curing coating and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117820947A (en) * | 2023-12-28 | 2024-04-05 | 上海飞凯材料科技股份有限公司 | Solvent-free ultraviolet curing material composition and application thereof |
| CN117820947B (en) * | 2023-12-28 | 2024-07-23 | 上海飞凯材料科技股份有限公司 | Solvent-free ultraviolet curing material composition and application thereof |
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