CN115197631A - Hardening and toughening coating composition, preparation method thereof and PET (polyethylene terephthalate) film - Google Patents
Hardening and toughening coating composition, preparation method thereof and PET (polyethylene terephthalate) film Download PDFInfo
- Publication number
- CN115197631A CN115197631A CN202110325883.3A CN202110325883A CN115197631A CN 115197631 A CN115197631 A CN 115197631A CN 202110325883 A CN202110325883 A CN 202110325883A CN 115197631 A CN115197631 A CN 115197631A
- Authority
- CN
- China
- Prior art keywords
- parts
- hardening
- weight
- coating composition
- toughening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2463/10—Epoxy resins modified by unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
- C08J2475/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of chemical engineering, in particular to a hardening and toughening coating composition and a preparation method thereof, and a PET film. The invention provides a hardening and toughening coating composition and a preparation method thereof, and a polyethylene terephthalate (PET) film, aiming at solving the problems of low hardness and poor flexibility of the PET film. The coating composition comprises inorganic nanoparticles and an organic liquid; the organic liquid comprises a UV curing prepolymer, a reactive diluent, a photoinitiator and a plasticizer. The coating formed by the hardening and toughening coating composition has high hardness and good flexibility.
Description
Technical Field
The invention relates to the technical field of chemical engineering, in particular to an organic-inorganic composite material. In particular to a hardening and toughening coating composition and a preparation method thereof, and a PET film.
Background
Polyethylene terephthalate (PET) films have been widely used because of their good light transmission and easy recycling, but their low hardness, poor abrasion resistance, and poor impact resistance have limited their range of use. The method for improving the hardness and the toughness of the PET film by adopting the surface coating technology is the simplest and feasible method. The technical problems of the prior PET film surface hardening and toughening UV curing transparent hybrid coating are mainly as follows: (1) the organic phase and the non-polar phase have poor compatibility; (2) Problems of dispersibility of nanofillers in organic polymer matrices; (3) The conversion rate of the photocuring double bonds is not high, and the hardness and the wear resistance of a coating film are influenced; (4) The transparency of the coating film is poor, and the wear resistance, hardness and flexibility are difficult to be considered simultaneously.
Disclosure of Invention
The invention provides a hardening and toughening coating composition and a preparation method thereof, and a polyethylene terephthalate (PET) film, aiming at solving the problems of low hardness and poor flexibility of the PET film.
The invention overcomes the defects in the prior art, and provides a preparation method of a PET film UV curing hardening and toughening transparent coating, wherein the UV curing organic/inorganic hybrid material has the film forming property, flexibility and adhesive force of an organic material, and the high hardness and scratch resistance of an inorganic material, and simultaneously improves the thermal stability of the material.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a hardening and toughening coating composition, which comprises inorganic nano particles and organic liquid; the organic liquid comprises a UV curing prepolymer, a reactive diluent, a photoinitiator and a plasticizer.
The coating formed by the hardening and toughening coating composition has high hardness, good flexibility and high light transmittance (more than 75 percent), and is a transparent coating.
The hardening and toughening coating composition is also called a hardening and toughening clear coating composition.
Further, the coating composition includes 0.2 to 2.5 parts by weight of inorganic nanoparticles and 100 parts by weight of an organic liquid.
Further, the coating composition includes 0.3 parts by weight of inorganic nanoparticles and 100 parts by weight of an organic liquid.
Further, the organic liquid comprises 70 parts by weight of the UV curing prepolymer, 20 parts by weight of the reactive diluent, 5 parts by weight of the photoinitiator and 5 parts by weight of the plasticizer.
The UV curing prepolymer is selected from one or the combination of at least two of difunctional bisphenol A Epoxy Acrylate (EA), hexafunctional polyurethane acrylate (PUA) and polyester acrylate (PEA).
Preferably, the UV curable prepolymer is a combination of difunctional bisphenol a Epoxy Acrylate (EA) and hexafunctional urethane acrylate (PUA).
The reactive diluent is selected from one or the combination of at least two of 1,6-hexanediol diacrylate (HDDA), pentaerythritol triacrylate (PETA), dipropylene glycol diacrylate (DPGDA), tripropylene glycol diacrylate (TPGDA) and trimethylolpropane triacrylate (TMPTA).
Preferably, the reactive diluent is a combination of 1,6-hexanediol diacrylate (HDDA) and pentaerythritol triacrylate (PETA).
Further, the photoinitiator is selected from one or a combination of at least two of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 1-hydroxycyclohexyl phenyl ketone, 2,4,6-trimethylbenzoyl-diphenyl phosphine oxide and benzophenone.
Preferably, the photoinitiator is a combination of 2-hydroxy-2-methyl-1-phenyl-1-propanone and 1-hydroxycyclohexyl phenyl ketone
Further, the plasticizer is linear thermoplastic polyacrylate.
Further, the organic liquid comprises 50 parts by weight of UV curing prepolymer difunctional bisphenol A Epoxy Acrylate (EA), 20 parts by weight of UV curing prepolymer hexa-functional urethane acrylate (PUA), 10 parts by weight of active diluent 1,6-hexanediol diacrylate (HDDA), 10 parts by weight of active diluent pentaerythritol triacrylate (PETA), 3 parts by weight of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone, 2 parts by weight of photoinitiator 1-hydroxycyclohexyl phenyl ketone and 5 parts by weight of plasticizer linear thermoplastic polyacrylate.
Further, the coating composition further comprises a solvent. The solvent is used to adjust the viscosity of the coating composition to facilitate the coating process. The solvent in the organic liquid may be referred to as solvent B. The solvent B is selected from one or the combination of at least two of ethyl acetate, n-butanol, butanone, butyl acetate and cyclohexanone. Preferably, the solvent B is ethyl acetate, and the mass ratio of ethyl acetate to the UV curing prepolymer is 1:1.
the solvent B may be used, for example, in an amount of 70 parts by weight.
In the preparation process, the inorganic nanoparticles are firstly prepared into a dispersion liquid, the dispersion liquid comprises a solvent and the inorganic nanoparticles, the solvent comprises acetone and Tetrahydrofuran (THF), and the mass ratio of the acetone to the THF is 1:1. the solvent in the dispersion may be referred to as solvent a. The mass percentage of the inorganic nano particles in the dispersion liquid is 30 percent.
Further, the inorganic nano-particles are selected from octavinyl cage type silsesquioxane (OVPOSS) and HL-150 type fumed nano-Silica (SiO) 2 ) ALuna type vapor phase nano aluminum oxide (Al) 2 O 3 ) JC-R50 type nano zirconium oxide (ZrO) 2 ) And JC-T25 type nano titanium dioxide (TiO) 2 ) Or a combination of at least two thereof. Preferably, the inorganic nanoparticles are octavinyl cage silsesquioxane (OVPOSS). Inorganic nanoparticles are chemically bonded to organic polymer chains to enhance coatingThe hardness of the layer, but when the content of the inorganic nanoparticles is too high, the inorganic nanoparticles cannot be all chemically bonded to the organic polymer chain, but are merely mixed with the organic polymer, and the hardness is rather reduced and the flexibility is increased.
Oligomeric silsesquioxane (POSS) is a type of organic/inorganic hybrid hollow closed or semi-closed polysiloxane with nanometer size, POSS can be dissolved and uniformly dispersed in solvent and resin, and can be connected to organic polymer chains in a chemical bonding manner, so that a real organic/inorganic nano hybrid material can be formed, and the mechanical strength, glass transition temperature and thermal stability of the polymer material are greatly improved.
The invention also provides a transparent PET film, which comprises a substrate and the hardening and toughening coating, wherein the hardening and toughening coating is attached to the surface of the substrate, and the hardening and toughening coating is formed by curing the hardening and toughening coating composition.
The hardening and toughening transparent coating composition is coated on the surface of a PET film, and forms a hardening and toughening transparent coating after UV curing, and is used for improving the hardness and flexibility of the PET film.
The invention also provides a preparation method of the hardening and toughening transparent coating composition, which comprises the following steps:
(1) Adding inorganic nano particles into the solvent A, and carrying out ultrasonic treatment to obtain a dispersion liquid.
(2) Adding the UV curing prepolymer, the reactive diluent, the photoinitiator and the plasticizer into a charging barrel according to a ratio, dispersing under a high-speed stirrer, adding a proper amount of solvent B to adjust viscosity, and stirring to obtain an organic liquid for later use.
(3) And (3) uniformly adding the dispersion liquid obtained in the step (1) into the prepared solution (2), and fully stirring to prepare the hardening and toughening transparent coating composition (also called organic/inorganic pre-coating liquid).
The organic/inorganic pre-coating liquid is coated on the surface of PET (125 μm) by a wet film coater and cured under a mercury lamp to obtain the UV-cured PET film hardening and toughening transparent coating (also called organic/inorganic hybrid coating).
Further, the solvent A in the step (1) is a mixed solution of acetone and Tetrahydrofuran (THF).
Further, the mass ratio of the acetone to the Tetrahydrofuran (THF) in the mixed solution in the step (1) is 1:1.
further, the organic/inorganic pre-coating liquid was coated on the surface of PET (125 μm) with a wet film coater to a coating thickness of 10 to 20 μm.
Compared with the prior art, the invention has the beneficial effects that:
the invention combines inorganic POSS and organic resin to form a hybrid coating, the inorganic POSS can be dissolved and uniformly dispersed in solvent and resin, and can be connected to an organic polymer chain in a chemical bonding mode, so that a real organic/inorganic nano hybrid material can be formed, and the mechanical strength, the glass transition temperature and the thermal stability of the polymer material are greatly improved. The coating formed by the hardening and toughening transparent coating composition prepared by the invention has both organic and inorganic excellent performances, has good strength and hardness, high toughness, good adhesive force, good impact resistance and good light transmittance, and overcomes the defects of the traditional resin performance. Therefore, the research of the organic-inorganic hybrid material has important guiding significance for improving the application performance of the resin and preparing novel industrial materials.
Drawings
FIG. 1 is a schematic view of the formation of an organic-inorganic hybrid coating on the surface of a PET film.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description and is not intended to be limiting.
As shown in FIG. 1, a PET (125 μm) film substrate was prepared, an organic/inorganic pre-coating solution was applied to the surface of the PET (125 μm) film, and the resultant was cured under an ultraviolet mercury lamp to obtain a hardened and toughened clear coating (also referred to as a PET organic-inorganic hybrid coating).
Example 1:
(1) 0.3 part by weight of octavinyl cage silsesquioxane (OVPOSS) was added to a mixed solvent of 0.5 part by weight of acetone and 0.5 part by weight of Tetrahydrofuran (THF), and then subjected to ultrasonic treatment for 30 minutes or more until the fineness of the dispersion was less than 5 μm to prepare a dispersion.
(2) Respectively adding 50 parts, 20 parts, 10 parts, 3 parts, 2 parts and 5 parts of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone, photoinitiator 1-hydroxycyclohexyl phenyl ketone and plasticizer by weight into a charging barrel, dispersing for 3min at 1000rpm of a high-speed stirrer, adding a proper amount of ethyl acetate to adjust the viscosity, and stirring for 1min to prepare organic liquid for later use.
(3) And (3) uniformly adding the dispersion into the prepared organic liquid, and fully stirring to prepare the organic/inorganic pre-coating liquid. The PET (125 μm) film substrate was washed with acetone and deionized water to remove stains, and then an organic/inorganic pre-coating solution was coated on the surface of a PET (125 μm) thin film with a wet film coater to a coating thickness of about 15 μm and cured under a high pressure mercury lamp (1000W) for 15 seconds to obtain a hardening and toughening clear coating (also referred to as a UV-cured PET film organic coating).
Example 2:
(1) 0.2 part by weight of octavinyl polyhedral oligomeric silsesquioxane (OVPOSS) was added to a mixed solvent of 0.33 part by weight of acetone and 0.33 part by weight of Tetrahydrofuran (THF), and then subjected to ultrasonic treatment for 30 minutes or more until the fineness of the dispersion was less than 5 μm to prepare a dispersion.
(2) Adding 50 parts, 20 parts, 10 parts, 3 parts, 2 parts and 5 parts by weight of UV curing prepolymer difunctional bisphenol A epoxy acrylate, UV curing prepolymer hexafunctional group polyurethane acrylate, 1,6-hexanediol diacrylate as an active diluent, pentaerythritol triacrylate as an active diluent, 2-hydroxy-2-methyl-1-phenyl-1-acetone as a photoinitiator, 1-hydroxycyclohexyl phenyl ketone as a photoinitiator and a plasticizer into a charging barrel, dispersing for 3min at 1000rpm of a high-speed stirrer, adding a proper amount of ethyl acetate to adjust viscosity, and stirring for 1min to prepare an organic liquid for later use.
(3) And (3) uniformly adding the dispersion into the prepared organic liquid, and fully stirring to prepare the hardening and toughening transparent coating composition (organic/inorganic pre-coating liquid). The PET (125 μm) film substrate was washed with acetone and deionized water to remove stains, and then an organic/inorganic pre-coating liquid was coated on the surface of a PET (125 μm) film with a wet film coater to a coating thickness of about 15 μm and cured under a high pressure mercury lamp (1000W) for 15 seconds to obtain a hardened and toughened clear coating (also referred to as a UV-cured PET film organic coating).
Example 3:
(1) 0.5 part by weight of octavinyl polyhedral oligomeric silsesquioxane (OVPOSS) was added to a mixed solvent of 0.83 part by weight of acetone and 0.83 part by weight of Tetrahydrofuran (THF), and then subjected to ultrasonic treatment for 30 minutes or more until the fineness of the dispersion was less than 5 μm to prepare a dispersion.
(2) Adding 50 parts, 20 parts, 10 parts, 3 parts, 2 parts and 5 parts by weight of UV curing prepolymer difunctional bisphenol A epoxy acrylate, UV curing prepolymer hexafunctional group polyurethane acrylate, 1,6-hexanediol diacrylate as an active diluent, pentaerythritol triacrylate as an active diluent, 2-hydroxy-2-methyl-1-phenyl-1-acetone as a photoinitiator, 1-hydroxycyclohexyl phenyl ketone as a photoinitiator and a plasticizer into a charging barrel, dispersing for 3min at 1000rpm of a high-speed stirrer, adding a proper amount of ethyl acetate to adjust viscosity, and stirring for 1min to prepare an organic liquid for later use.
(3) And (3) uniformly adding the dispersion liquid into the prepared organic liquid, and fully stirring to prepare the organic/inorganic pre-coating liquid. The PET (125 μm) film substrate was washed with acetone and deionized water to remove stains, and then coated on the surface of a PET (125 μm) thin film with a wet film coater organic/inorganic pre-coating liquid to a coating thickness of about 15 μm, and cured for 15 seconds under a high pressure mercury lamp (1000W) to obtain a UV-cured PET film organic coating.
Example 4:
(1) Octavinyl polyhedral oligomeric silsesquioxanes (OVPOSS) 2.5 parts by weight was added to a mixed solvent of acetone 4 parts by weight and Tetrahydrofuran (THF) 4 parts by weight, and then subjected to ultrasonic treatment for 30 minutes or more until the fineness of the dispersion was less than 5 μm to prepare a dispersion.
(2) Adding 50 parts, 20 parts, 10 parts, 3 parts, 2 parts and 5 parts by weight of UV curing prepolymer difunctional bisphenol A epoxy acrylate, UV curing prepolymer hexafunctional group polyurethane acrylate, 1,6-hexanediol diacrylate as a reactive diluent, pentaerythritol triacrylate as a reactive diluent, 2-hydroxy-2-methyl-1-phenyl-1-acetone as a photoinitiator, 1-hydroxycyclohexyl phenyl ketone as a photoinitiator and a plasticizer into a charging barrel, dispersing for 3min at 1000rpm of a high-speed stirrer, adding a proper amount of ethyl acetate (for example, 70 parts by weight) to adjust the viscosity, and stirring for 1min to prepare an organic liquid for later use.
(3) And (3) uniformly adding the dispersion into the prepared organic liquid, and fully stirring to prepare the organic/inorganic pre-coating liquid. The PET (125 μm) film substrate was washed with acetone and deionized water to remove stains, and then coated on the surface of a PET (125 μm) thin film with a wet film coater organic/inorganic pre-coating solution to a coating thickness of about 15 μm, and cured for 15 seconds under a high pressure mercury lamp (1000W) to obtain a UV-cured PET film organic coating.
Comparative example 1:
(1) Adding 50 parts, 20 parts, 10 parts, 3 parts, 2 parts and 5 parts by weight of UV curing prepolymer difunctional bisphenol A epoxy acrylate, UV curing prepolymer hexafunctional group polyurethane acrylate, 1,6-hexanediol diacrylate as an active diluent, pentaerythritol triacrylate as an active diluent, 2-hydroxy-2-methyl-1-phenyl-1-acetone as a photoinitiator, 1-hydroxycyclohexyl phenyl ketone as a photoinitiator and a plasticizer into a charging barrel, dispersing for 3min at 1000rpm of a high-speed stirrer, adding a proper amount of ethyl acetate to adjust viscosity, and stirring for 1min to prepare an organic liquid for later use.
(2) The PET (125 μm) film substrate was rinsed with acetone and deionized water to remove stains, and then a thin film coated on the PET (125 μm) surface with a wet film coater organic precoat liquid to a thickness of about 15 μm was cured under a high pressure mercury lamp (1000W) for 15 seconds to give a pure organic coating.
TABLE 1 test results for stiffening and toughening clearcoats and neat organic coatings
Pencil hardness (H): the test was carried out according to GB/T6739-86 using a pencil hardness tester of the PPH-1 type. And (3) after the paint film is solidified, placing the sample plate in a horizontal position, pushing pencils with gradually increased hardness to determine the surface position of the paint film, and taking the pencil hardness when no scratch just appears on the surface as the pencil hardness value of the paint film.
Adhesion test (B): the surface of the coating film was cut into 10X 10 grids spaced 2mm apart by a scriber according to GB/T9286-1998 test for adhesion by scriber method, and an adhesive tape was applied to the grids, followed by tearing at a proper and uniform speed. And (3) performing adhesion tests at three different positions of the coating film, wherein the number of the falling grids is 0, less than 5%, 5-15%, 15-35%, 35-65% and more than 65%, and the adhesion grades are respectively 5B-0B.
The water resistance and the chemical resistance are tested according to GB/T1733-1993 paint film water resistance determination method, and the paint is soaked in distilled water for 24 hours at the temperature of 23 +/-2 ℃; according to GB1763-1979 "method for determination of chemical resistance of paint films", 5% acetic acid, 5% NaHCO3, 10% ethanol and 5% NaCl are added dropwise to the paint film surface at 25. + -. 1 ℃ for 24h. Level 1: no obvious change exists; and 2, stage: slight whitish and swollen and recoverable; and 3, level: white hair, swollen and unrecoverable; 4, level: whitish and powdered, unrecoverable.
Impact resistance (kg/cm): the paint film is subjected to an impact resistance test according to the GB/T1732-93 impact resistance test method for paint films, and the maximum height which does not cause damage to the paint film represents the impact resistance of the paint film, unit: kilograms per centimeter (kg/cm). The higher the impact resistance value, the higher the impact strength, i.e. the better the strength of the coating.
Flexibility (mm): and winding the UV curing PET film sample on a cylinder, and recording the diameter of the cylinder without cracks on the PET film, wherein the smaller the diameter value is, the better the flexibility is.
Glass transition temperature (. Degree. C.), storage modulus (MPa): and (4) carrying out dynamic thermal analysis by using a dynamic thermal mechanical analyzer. The storage modulus (E '), loss modulus (E') and tan delta curves were recorded and the glass transition temperature (Tg) value was calculated from the peak of the tan delta curve. The higher the glass transition temperature, the better the heat resistance of the material; the higher the storage modulus, the greater the material hardness and the greater the ability to retain shape.
5% temperature of thermal weight loss (. Degree. C.): thermogravimetric analysis was performed using a thermogravimetric analyzer. The higher the temperature of the 5% thermogravimetric temperature, the better the heat resistance of the material.
Light transmittance (%): the light transmittance tester is used for testing, and the larger the test value is, the better the light transmittance of the material is.
In the PET film UV curing hardening and toughening transparent coating, inorganic POSS can be dissolved and uniformly dispersed in a solvent and resin and can be connected to an organic polymer chain in a chemical bonding mode, so that a real organic/inorganic nano hybrid material can be formed, wherein the optimal embodiment 1 greatly improves the mechanical strength, glass transition temperature and thermal stability of the polymer material, has good strength hardness, high toughness, good adhesive force, good impact resistance and good light transmittance, and overcomes the defects of the performance of the traditional resin.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the disclosure of the present invention are covered by the scope of the claims of the present invention.
Claims (10)
1. The hardening and toughening coating composition is characterized by comprising inorganic nano particles and organic liquid; the organic liquid comprises a UV curing prepolymer, a reactive diluent, a photoinitiator and a plasticizer.
2. The hardening and toughening coating composition according to claim 1, wherein the coating composition comprises 0.2 to 2.5 parts by weight of the inorganic nanoparticles and 100 parts by weight of the organic liquid.
3. The hardening and toughening coating composition according to claim 1, wherein the coating composition comprises 0.3 parts by weight of the inorganic nanoparticles and 100 parts by weight of the organic liquid.
4. The hardening and toughening clear coating composition according to claim 1, wherein the organic liquid comprises 70 parts by weight of a UV curable prepolymer, 20 parts by weight of a reactive diluent, 5 parts by weight of a photoinitiator, and 5 parts by weight of a plasticizer.
5. The hardening and toughening coating composition of claim 1, wherein the UV curable prepolymer is selected from one or a combination of at least two of difunctional bisphenol A Epoxy Acrylate (EA), hexafunctional urethane acrylate (PUA) and polyester acrylate (PEA).
6. The hardening and toughening coating composition of claim 1, wherein said reactive diluent is selected from 1,6-hexanediol diacrylate (HDDA), pentaerythritol triacrylate (PETA), dipropylene glycol diacrylate (DPGDA), tripropylene glycol diacrylate (TPGDA), or trimethylolpropane triacrylate (TMPTA), or a combination of at least two thereof.
7. The hardening and toughening coating composition of claim 1, wherein said UV curable prepolymer is a combination of difunctional bisphenol A Epoxy Acrylate (EA) and hexafunctional urethane acrylate (PUA); the reactive diluent is a combination of 1,6-hexanediol diacrylate (HDDA) and pentaerythritol triacrylate (PETA).
8. The hardening and toughening coating composition according to claim 1, wherein the organic liquid comprises 50 parts by weight of UV-curable prepolymer difunctional bisphenol A Epoxy Acrylate (EA), 20 parts by weight of UV-curable prepolymer hexafunctional urethane acrylate (PUA), 10 parts by weight of active diluent 1,6-hexanediol diacrylate (HDDA), 10 parts by weight of active diluent pentaerythritol triacrylate (PETA), 3 parts by weight of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2 parts by weight of photoinitiator 1-hydroxycyclohexyl phenyl ketone, and 5 parts by weight of plasticizer linear thermoplastic polyacrylate.
9. The method of claim 1 wherein said hardening and toughening agentThe coating composition is characterized in that the inorganic nano particles are selected from octavinyl polyhedral oligomeric silsesquioxanes (OVPOSS) and HL-150 type gas phase nano silicon dioxide (SiO) 2 ) ALuna type vapor phase nano aluminum oxide (Al) 2 O 3 ) JC-R50 type nano zirconium oxide (ZrO) 2 ) And JC-T25 type nano titanium dioxide (TiO) 2 ) Or a combination of at least two thereof.
10. A transparent PET film, which comprises a substrate and a hardening and toughening coating, wherein the hardening and toughening coating is attached to the surface of the substrate, and the hardening and toughening coating is formed by curing the hardening and toughening coating composition according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325883.3A CN115197631A (en) | 2021-03-26 | 2021-03-26 | Hardening and toughening coating composition, preparation method thereof and PET (polyethylene terephthalate) film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325883.3A CN115197631A (en) | 2021-03-26 | 2021-03-26 | Hardening and toughening coating composition, preparation method thereof and PET (polyethylene terephthalate) film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115197631A true CN115197631A (en) | 2022-10-18 |
Family
ID=83571258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110325883.3A Pending CN115197631A (en) | 2021-03-26 | 2021-03-26 | Hardening and toughening coating composition, preparation method thereof and PET (polyethylene terephthalate) film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115197631A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116003860A (en) * | 2022-12-29 | 2023-04-25 | 无锡市星月塑业有限公司 | Preparation method of high-toughness light-transmitting environment-friendly plastic packaging film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236113A (en) * | 2010-05-01 | 2011-11-09 | 中国航天科技集团公司第四研究院第四十二所 | Ultraviolet-cured hard coating and application thereof |
| CN103059697A (en) * | 2012-12-28 | 2013-04-24 | 上海乘鹰新材料有限公司 | Ultraviolet curing coating composition for metallic yarn protective layer |
| CN103788734A (en) * | 2012-11-02 | 2014-05-14 | 中冶建筑研究总院有限公司 | Water-soluble inorganic zinc-rich paint and preparation method thereof |
-
2021
- 2021-03-26 CN CN202110325883.3A patent/CN115197631A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236113A (en) * | 2010-05-01 | 2011-11-09 | 中国航天科技集团公司第四研究院第四十二所 | Ultraviolet-cured hard coating and application thereof |
| CN103788734A (en) * | 2012-11-02 | 2014-05-14 | 中冶建筑研究总院有限公司 | Water-soluble inorganic zinc-rich paint and preparation method thereof |
| CN103059697A (en) * | 2012-12-28 | 2013-04-24 | 上海乘鹰新材料有限公司 | Ultraviolet curing coating composition for metallic yarn protective layer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116003860A (en) * | 2022-12-29 | 2023-04-25 | 无锡市星月塑业有限公司 | Preparation method of high-toughness light-transmitting environment-friendly plastic packaging film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100759203B1 (en) | Coating Compositions and Articles with Cured Coats Thereof | |
| TWI357403B (en) | Nano-structured surface coating process, nano-stru | |
| US12152163B2 (en) | Nanocomposite formulations for optical applications | |
| CN102220062B (en) | Aqueous UV curing coating and preparation method thereof | |
| TWI522413B (en) | Hardened resin composition | |
| US9017819B2 (en) | Plastic substrates having a scratch-resistant coating, in particular housings of electronic devices, having high transparency, method for the production thereof, and use thereof | |
| JP2015078340A (en) | Organic-inorganic composite production method, curable composition, curable composition cured product, hard coat material, hard coat film, and silane coupling agent | |
| WO2004041888A1 (en) | Radiation curing resin composition and cured product thereof | |
| CN105462481A (en) | Ultraviolet-cured composition | |
| WO2010073445A1 (en) | Active energy ray-curable composition, active energy ray-curable coating material, and molded product | |
| CN107936746A (en) | A kind of organic-silicon-modified cation photocuring cycloaliphatic epoxy resin coating and its application | |
| JP2007182530A (en) | Curable composition, cured film, antireflection film laminate and method for producing cured film | |
| JP4372268B2 (en) | Resin molded product having coating agent and coating layer | |
| CN104418958B (en) | The manufacture method of organic mineral complex, solidification compound and solidfied material thereof, firmly it is coated with material, hard coat film and silane coupler | |
| CN115197631A (en) | Hardening and toughening coating composition, preparation method thereof and PET (polyethylene terephthalate) film | |
| CN115232550A (en) | Low-reflection coating composition and preparation method thereof | |
| JP2004217836A (en) | Radiation curing composition, method for producing radiation curing composition, cured product and optical material | |
| CN115141504A (en) | Maleic anhydride polybutadiene modified ultraviolet-curing polyacrylate coating composition and preparation method thereof | |
| JP2000063549A (en) | Thin article having abrasion resistant thin membrane, and optical disk | |
| JP2017171726A (en) | Curable composition, cured product thereof, and laminate | |
| CN103387759A (en) | A kind of organic/inorganic hybrid hardening agent, preparation method and application | |
| CN113755081B (en) | Ultraviolet curing coating, preparation method and application | |
| CN112680103B (en) | A kind of ultra-high-strength hydrophobic anti-fog coating composition and its application | |
| JP2006152273A (en) | Radiation-curable composition and cured product thereof, and laminated form of the cured product | |
| JPH0726207A (en) | Primer composition, cured layer thereof, and its use for clear plastic molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221018 |
|
| RJ01 | Rejection of invention patent application after publication |