CN106832373B - A kind of optics precoating polyester film and preparation method thereof and a kind of brightness enhancement film - Google Patents
A kind of optics precoating polyester film and preparation method thereof and a kind of brightness enhancement film Download PDFInfo
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- CN106832373B CN106832373B CN201510876206.5A CN201510876206A CN106832373B CN 106832373 B CN106832373 B CN 106832373B CN 201510876206 A CN201510876206 A CN 201510876206A CN 106832373 B CN106832373 B CN 106832373B
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6692—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/34
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
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- 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
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- 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
- C08J2475/08—Polyurethanes from polyethers
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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Abstract
The present invention relates to optical thin film more particularly to a kind of optics precoating polyester films and preparation method thereof.For solve the problems, such as existing brightness enhancement film no-solvent type UV glue and polyester base material adhesion it is poor, the present invention provides a kind of optics precoating polyester film and preparation method thereof and a kind of brightness enhancement film.The optics precoating polyester film includes polyester base material layer and precoated shet, at least one surface of the polyester base material layer is coated with precoated shet；The precoated shet includes urethane acrylate and organic filler, and the organic filler is bonded on the surface of substrate layer by urethane acrylate.The urethane acrylate is to be coated on polyester film surface online by base polyurethane prepolymer for use as and acrylic monomers, during stretching at a high temperature of reactive polymeric form.Brightness enhancement film provided by the invention has high transparency and low haze；And in brightness enhancement film, the adhesive force as made from no-solvent type UV glue between brightening structure layer and substrate layer is excellent.
Description
Technical field
The present invention relates to optical thin film more particularly to a kind of optics precoating polyester film and preparation method thereof and a kind of blasts
Film.
Background technique
Optical polyester film is high with light transmittance, mist degree is low, brightness is high, not yellowing, adhesive force is good, flatness is good, nothing
Light and shade line, high temperature resistant and ultraviolet light irradiation, stiffness be good, it is anti-hardening crack, not cracky the features such as.Optics is widely used in polyester film
Optics and photoelectron technical field manufacture various optical instruments.Wherein the maximum application field of usage amount is led in FPD
In domain, 7-8 PET type optical film (2 optical diffusion films, 1 increasing with different function can be such as used in a liquid crystal display
Bright film, 2 phase difference films, 1 anti-dazzling film, 1 shield conductive film).These functional optical films are mainly by optics
It is coated obtained by various functional coatings with polyester film surface.
The substrate of existing functional optical film contacts between functional coating and film base material surface without precoated shet
Active site is less, and coating liquid is caused to be not easy to penetrate into, it is difficult to formed absorption；If substrate glossiness and light transmittance are high, base
Material surface roughness is lower, causes coating liquid and film base material surface bonding point few.Simultaneously because the optics without precoated shet is used and is gathered
Ester film itself has film surface crystallization height-oriented, and caused coating molecule is difficult to infiltrate through in film, is not easy it and coating
Form good interfacial bonding.Therefore, the adhesive force between the substrate layer and functional coating of existing capability optical thin film compared with
Difference.It solves the above problems if necessary and just needs to do precoated shet processing with polyester film surface in optics.
At present for coating glue used in the optical film (diffusion barrier, brightness enhancement film, antiglare film etc.) in LCD backlight mould group
Water can be divided into two classes: solvent type glue and no-solvent type glue, and solvent type glue has substrate certain swelling and infiltration
Effect thoroughly, to be better than no-solvent type glue in terms of the attachment of glue.No-solvent type glue refers mainly to no-solvent type UV glue,
It is mainly used in the processing procedure of brightness enhancement film.
Therefore, it in order to promote the adhesive force of no-solvent type UV glue and substrate in brightness enhancement film, needs to do in polyester film surface
Specific precoated shet, current more coating are polyester, acroleic acid resin and polyurethane coating material.But this kind of material
Material is typically all that the segment of macromolecular and curing agent match, and curing and drying forms at a high temperature of horizontal drawing, can not be applicable in completely
In the blast attachment of no-solvent type UV glue, it is low that there is light transmittances, and mist degree is higher, the low problem of adhesive force.
Summary of the invention
Adhesion to solve the problems, such as no-solvent type UV glue and polyester base material in existing brightness enhancement film is poor, the present invention
A kind of optics precoating polyester film and preparation method thereof and a kind of brightness enhancement film are provided.
In order to achieve the above object, the present invention adopts the following technical solutions:
The present invention provides a kind of optics precoating polyester film, and the optics precoating polyester film includes polyester base material layer and pre-
At least one surface of coating, the polyester base material layer is coated with precoated shet；The precoated shet includes urethane acrylate
(acrylic-polyurethane, PUA) and organic filler, the organic filler are bonded in substrate by urethane acrylate
On the surface of layer.
Further, the urethane acrylate is made by base polyurethane prepolymer for use as and acrylic monomers copolymerization.
Further, the urethane acrylate be coated on online by base polyurethane prepolymer for use as and acrylic monomers it is poly-
Ester substrate layer (also referred to as polyester film) surface, during stretching at a high temperature of reactive polymeric form.
Further, the acrylic monomers is the composition of rigid acrylic monomers and soft acrylic's monomer.
Further, a surface (single side) of the polyester base material layer is coated with precoated shet.
Further, two surfaces of the polyester base material layer are (two-sided) is coated with precoated shet.
Further, the polyester base material layer is existing polyester film.
Further, polyester base material layer with a thickness of 20-300 μm.
Further, the precoated shet with a thickness of 0.05-0.1 μm.
The precoated shet is also referred to as priming coat.
In the precoated shet, the organic filler is the nanometer organic microbead with resist blocking and that effect.
The polyester base material layer is polyester slice melting extrusion, is made through biaxial tension.
Further, in the optics in precoating polyester film, the organic filler be selected from polystyrene (PS) microballoon,
Styrene-methylmethacrylate copolymer (MS) microballoon, polymethyl methacrylate (PMMA) microballoon, poly terephthalic acid second
One of diol ester (PET) microballoon or polyamide (PA) microballoon or at least two combination.
Further, the partial size of the organic filler is 10-100nm.
Further, the partial size of the organic filler is preferably 30-60nm.
Further, the light refractive index of the organic filler is in 1.43-1.70, wherein preferably 1.60.
Further, the organic filler is preferably PET microballoon.
Further, the polyester base material layer is pure polyester base material layer, does not add any functional aid.
The polyester is selected from PET (polyethylene terephthalate), PBT (polybutylene terephthalate (PBT)), PBN
(poly- naphthalenedicarboxylic acid fourth diester), PCT (poly terephthalic acid 1,4- cyclohexane dicarboxylates), PEN (polyethylene naphthalate),
The combination of one of PTN (poly- two acid propylene glycol ester of naphthalene) or PTT (1,3 propylene glycol ester of poly terephthalic acid) or at least two
Object.
Further, in the optics in precoating polyester film, the raw material of the precoated shet includes following components:
Isocyanates 28-47%, polyvalent alcohol 27-45%, hydrophilic chain extender 2-6%, neutralizer 1-5%, metering system
Sour methyl esters 0-16%, n-butyl acrylate 0-24%；The percentage is weight percentage.
Further, the raw material of the pre-coating solution includes following components:
Isocyanates 28.44-46.71%, polyvalent alcohol 27.30-44.83%, hydrophilic chain extender 2.34%-5.48%,
Neutralizer 1.76%-4.12%, methyl methacrylate 0-15.65%, n-butyl acrylate 0-23.47%.
Further, in the optics in precoating polyester film, the raw material of the precoated shet includes following components:
Isocyanates 36.64-38.04%, polyvalent alcohol 32.34-38.36%, hydrophilic chain extender 3.85-5.38%, in
With agent 2.84-4.05%, methyl methacrylate 6.76-8.68%, n-butyl acrylate 11.51-11.65%；The percentage
Number is weight percentage.
Further, the raw material of the precoated shet includes following components:
Isocyanates 38.04%, polyvalent alcohol 33.34%, hydrophilic chain extender 5.38%, neutralizer 4.05%, methyl-prop
E pioic acid methyl ester 7.68%, n-butyl acrylate 11.51%；The percentage is weight percentage.
Further, the isocyanates is fat race isocyanates.The isocyanates is preferably that aliphatic two is different
Cyanate.
Further, the polyvalent alcohol is polyester diol or polyether Glycols, wherein preferably polyethers binary
Alcohol.
Further, in the isocyanates-NCO group content and polyvalent alcohol in-OH group content ratio be 3-
9:1。
Further, in the optics in precoating polyester film, the isocyanates is isophorone diisocyanate
Ester (IPDI), the polyvalent alcohol are polyoxypropyleneglycol (PPG).
The hydrophilic chain extender is referred to as chain extender, is anionic hydrophilic chain extender, preferably 2,2- dihydroxymethyl
Propionic acid (DMPA).
The neutralizer is bases neutralizer, wherein preferably triethylamine (TEA).
Further, in the optics in precoating polyester film, during the preparation process, the raw material of the precoated shet is first matched
Pre-coating solution is made, the preparation process of the pre-coating solution is as follows:
(1) base polyurethane prepolymer for use as is prepared
Polyurethane prepolymer precursor emulsion is prepared using isocyanates, polyvalent alcohol, hydrophilic chain extender and neutralizer；
(2) pre-coating solution is prepared
Polyurethane prepolymer precursor emulsion, the methyl methacrylate obtained using step (1), n-butyl acrylate preparation precoating
Liquid.
Further, during preparing base polyurethane prepolymer for use as, deionized water need to be added, adjusts base polyurethane prepolymer for use as cream
The solid content of liquid.Further, the solid content of the polyurethane prepolymer precursor emulsion is 10%.
Further, during preparing pre-coating solution, the solid content that deionized water adjusts pre-coating solution can be added.
Further, the solid content of the pre-coating solution is 10%.
Further, it during the preparation process, is added and is caused into pre-coating solution in precoating polyester film in the optics
Agent, the additive amount of initiator are the 0-1.2% of solid content total weight in pre-coating solution.
Further, during the preparation process, the additive amount of the initiator is solid content total weight in pre-coating solution
0.3-1.2%.
Further, during the preparation process, the additive amount of the initiator is solid content total weight in pre-coating solution
0.3-0.6%.
The initiator is the initiator of water-soluble thermal decomposition type, wherein preferably potassium peroxydisulfate (KPS).
The additive amount of the initiator (such as KPS) is preferably 0.6%.
Further, during the preparation process, organic grain is added into pre-coating solution in precoating polyester film in the optics
Son, the additive amount of the organic filler are the 0.1-0.2% of solid content total weight in pre-coating solution.
The present invention also provides a kind of brightness enhancement film, including basement membrane and brightness enhancement layer, the basement membrane is optics of the present invention use
Precoat polyester film.The brightness enhancement layer is bonded on a surface of basement membrane (or being substrate).Further, the brightness enhancement layer is
The brightening structure layer as made from no-solvent type UV glue.Further, the no-solvent type UV glue is no-solvent type UV propylene
Acid resin glue.
Further, the brightness enhancement film further includes back coating, and the brightness enhancement layer is bonded on a surface of basement membrane, described
Back coating is bonded on another surface of basement membrane.
The optics method of precoating polyester film is prepared the present invention also provides a kind of, the method includes following steps
It is rapid:
The material of polyester base material layer is squeezed out into slab by extruder, then by slab longitudinal stretching, then to substrate layer
Surface carry out sided corona treatment, be then coated with pre-coating solution online on corona surface, then cross directional stretch, finally traction winding, system
Obtain optics precoating polyester film.
The base polyurethane prepolymer for use as is blocked polyurethane performed polymer.
Further, the above-mentioned method for preparing optics precoating polyester film includes the following steps:
1, the optics preparation raw materials used with precoating polyester film
(1), the preparation of blocked polyurethane performed polymer:
A certain amount of polyether Glycols are spare in 120 DEG C of vacuum dehydration 2h, then equipped with blender, thermometer, cold
Isophorone diisocyanate (IPDI) is added in the four-hole boiling flask of solidifying pipe, is passed through nitrogen, it is processed to be warming up to 50 DEG C of additions
Polyether Glycols (PPG) are continuously heating to 80 DEG C, react 2 hours, add people DMPA, the reaction was continued 2 hours, is cooled to 45 DEG C, adds
Triethylamine neutralizes, and is cooled to 30 DEG C after 0.5 hour, and a certain amount of deionized water dispersion is added, and PU performed polymer is made in high-speed stirred
Lotion.The solid content of PU pre-polymerization precursor emulsion is 10%.
(2), the preparation of pre-coating solution
By PU pre-polymerization precursor emulsion made from step (1), the third of certain proportional quantity is added at high-speed stirred (1000r/min)
Acrylic monomer (methacrylic acid monomer (MMA) and butyl acrylate (BA)), stirs 2 hours after being uniformly mixed, is then added
The PET microballoon of certain proportional quantity after stirring 0.5 hour, uses preceding addition initiator KPS in pre-coating solution, stirs 0.5 hour
Afterwards, online coating machine can be squeezed into and carry out coating production and application.
2, recipe ratio (weight percent):
(1), polyester base material layer matches: 100% PET is added extruder and squeezes out slab；
(2), precoated shet matches:
Pre-coating solution is prepared, solid by pre-coating solution contains control 10%, then by the PET grain of the 30-60nm of 0.1-0.2%
Son is added in pre-coating solution, and (additive amount of PET particle is contained relative to pre-coating solution solid to the speed stirring 30min of 500r/min
The additive amount of amount, such as the 10% pre-coating solution 100g that contains admittedly, wherein solid deal is 10g, the additive amount of PET particle be 10g ×
0.1%=0.01g).
3, the preparation method of optics precoating polyester film
By polyester raw material, melting extrusion slab, gained sheet utilize 3-4 times of longitudinal stretching at 90-110 DEG C after drying
Online coating process manufactures the precoated shet of polyester film, 3-4 times of the cross directional stretch at 85-115 DEG C, the thermal finalization at 220-230 DEG C
Processing is wound after cooling, is finally made the optics precoating polyester film with a thickness of 20 μm -300 μm.
The present invention is proposed to use base polyurethane prepolymer for use as and acrylic monomers, be reacted at a high temperature of during the horizontal drawing of polyester film
Solidification forms the technical solution of urethane acrylate coating.Such advantage is, the lesser base polyurethane prepolymer for use as of molecular weight
With acrylic monomers, there is good tracing ability with the stretching of polyester film in horizontal drawing case, to guarantee that the surface of polyester film is flat
It is whole, and by the way that the organic filler with certain refractive index is added in the coating, it ensure that the high transparency and ground fog of polyester film
Degree, in addition, by polyurethane use polyether segment flexible and with acrylic acid similar in no-solvent type UV glue polarity
Monomer improves the adhesive force of no-solvent type UV glue and polyester base film.
Adhesion of the optics provided by the invention between the brightening structure made of precoating polyester film and UV glue is preferable, thoroughly
Light rate is higher, and mist degree is lower.The method and process provided by the invention for preparing optics precoating polyester film is simple, makes to be prepared
The optics surfacing of precoating polyester film, light transmittance is higher, and mist degree is lower.
Compared with existing brightness enhancement film, brightness enhancement film provided by the invention has high transparency and low haze；Also, in brightness enhancement film
In, the adhesive force as made from no-solvent type UV glue between brightening structure layer and substrate layer is excellent.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of optics provided by the invention precoats polyester film；
Fig. 2 is the structural schematic diagram that another optics provided by the invention precoats polyester film；
Fig. 3 is the structural schematic diagram of brightness enhancement film provided by the invention.
Specific embodiment
It, hereafter will be of the invention preferable for the functional character and advantage that is more readily understood structure of the invention and can reach
Embodiment, and schema is cooperated to be described below in detail:
As depicted in figs. 1 and 2, the present invention provides a kind of optics precoating polyester film, optics precoating polyester film packet
Polyester base material layer 2 and precoated shet 1 are included, at least one surface of the polyester base material layer 2 is coated with precoated shet 1；The precoated shet 1
Including urethane acrylate (acrylic-polyurethane, PUA) and organic filler 101, the organic filler 101 passes through
Urethane acrylate is bonded on the surface of substrate layer 2.
As shown in Figure 1, two surfaces of the polyester base material layer 2 are (two-sided) to be coated with precoated shet 1.
As shown in Fig. 2, a surface (single side) of the polyester base material layer 2 is coated with precoated shet 1.
As shown in figure 3, brightness enhancement film provided by the invention, including base membrane layer 3, brightness enhancement layer 1 and back coating 4, the basement membrane are
Precoating has been respectively coated with two surfaces of the polyester base material layer 3 in precoating polyester film in optics precoating polyester film, the optics
Layer 2.1 and precoated shet 2.2.
Polyester base material layer used in embodiment is the polyester film of Chinese Chang Yang Science and Technology Ltd. production, product type
It is OSQ2.
Brightness enhancement film (abbreviation diaphragm) provided in an embodiment of the present invention tests its main performance using following methods:
(1) light transmittance and mist degree are tested:
The diaphragm for cutting 5cm × 5cm, with visible spectrophotometer instrument, (Xinlian Chuangzuo Electronics Co., Ltd., Shanghai is produced, and produces
Product model: Hunter-lab colar quest XE) measure light transmittance and mist degree.
(2) the adhesive force test between brightness enhancement layer and polyester base film:
The diaphragm for cutting 20cm × 20cm is tested referring to hundred lattice testing standard of GB/T-9286-98.
(3) pre-coating solution appearance is tested:
With visual observations method observation pre-coating solution color, the transparency, state, have free from admixture, condensation product, whether there is or not blue lights etc..
(4) pre-coating solution stability test:
By " GB-6753.3-1986 coating storage stability test method ", stored using artificial acceleration condition pre- to test
The storage stability of masking liquid, test condition: 50 ± 2 DEG C, 30 days.
(5) the film sample preparation of urethane acrylate:
Pre-coating solution is uniformly poured into casting film-forming in 10cm × 10cm × 1cm glass board mould, drying at room temperature 48h；It puts again
Enter 40 DEG C of drying 4-6h in baking oven, glue film is separated from glass plate, the film that thickness about 1mm is made is spare.
(6) water absorption rate test of precoated shet glue film:
The swelling ratio of glue film in water illustrates the water absorption rate of glue film, of poor quality before and after being immersed in distilled water with glue film
It is indicated with the percentage for impregnating preceding quality.
Urethane acrylate film is cut into 3cm × 3cm, is placed in a vacuum drying oven and dries to constant weight, precise its
Quality m1, is then placed in sample in deionized water, impregnates take out afterwards for 24 hours at room temperature, absorbs the moisture on surface, weighs rapidly
Wet film quality m2 calculates water absorption rate according to following publicity:
In the technical solution that embodiment 1 provides, pre-coating solution is by online coating process coating in a table of polyester base material
On face.In the technical solution that embodiment 2-21 is provided, pre-coating solution is by online coating process coating in two tables of polyester base material
On face.
Organic filler in embodiment 1-21 is PET microballoon, and additive amount is the 0.1- of solid content total weight in pre-coating solution
0.2%.The partial size of the PET microballoon is 10-100nm.
Embodiment 1
Brightness enhancement film provided by the invention, including basement membrane and brightness enhancement layer, the basement membrane are optics provided by the invention precoating
Polyester film, the optics precoating polyester film include polyester base material layer and precoated shet, and the surface of the polyester base material layer is coated with
Precoated shet；The precoated shet includes urethane acrylate (acrylic-polyurethane, PUA) and organic filler, described
Organic filler is bonded on the surface of substrate layer by urethane acrylate.
Wherein, the component proportion of precoated shet is as shown in table 1, by pre-coating solution obtained by online coating process coating in poly-
188 μ m-thick optics precoating polyester film is made in ester substrate surface.
Using optics obtained above precoating polyester film as basement membrane, no-solvent type UV third is coated on a surface of basement membrane
Olefin(e) acid resin glue, glue are rolled by mold, and brightness enhancement layer is formed after solidification, and brightness enhancement layer is column micro-prism structure, microprism
The cross section of structure is isosceles triangle, and the height of micro-prism structure is 50 μm, and the angle of apex angle is 90 °.Results of property such as table 2
It is shown.
Embodiment 2
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 3
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 4
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 5
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 6
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 7
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 8
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 9
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 10
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 11
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 12
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 13
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 14
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 15
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 16
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 17
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 18
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 19
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 20
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 21
The brightness enhancement film provided such as embodiment 1, wherein the component proportion of precoated shet is as shown in table 1, results of property such as 2 institute of table
Show.
Embodiment 22
Such as the pre-coating solution that embodiment 14 provides, initiator KPS is added into pre-coating solution, wherein the component proportion of KPS such as table
Shown in 3, appearance is as shown in table 3 with stability.
Embodiment 23
Such as the pre-coating solution that embodiment 14 provides, initiator KPS is added into pre-coating solution, wherein the component proportion of KPS such as table
Shown in 3, appearance is as shown in table 3 with stability.
Embodiment 24
Such as the pre-coating solution that embodiment 14 provides, initiator KPS is added into pre-coating solution, wherein the component proportion of KPS such as table
Shown in 3, appearance is as shown in table 3 with stability.
Embodiment 25
Such as the pre-coating solution that embodiment 14 provides, initiator KPS is added into pre-coating solution, wherein the component proportion of KPS such as table
Shown in 3, appearance is as shown in table 3 with stability.
Every data in technical solution described in 1 1-21 of the embodiment of the present invention of table
The performance detection data for the brightness enhancement film that 2 1-21 of the embodiment of the present invention of table is provided
Influence of 3 initiator concentration of table to pre-coating solution
By the data of Tables 1 and 2, it can be concluded that, the light transmittance of brightness enhancement film provided by the invention is high, and mist degree is low, brightness enhancement layer with
Adhesive force between basement membrane is good.Wherein, the blast that embodiment 3, embodiment 9, embodiment 14, embodiment 16 and embodiment 18 provide
The comprehensive performance of film is more preferable, and light transmittance is greater than or equal to 89.1%, and mist degree is less than or equal to 2.7%, and adhesive force is
5B, absorptance are less than or equal to 9.8%.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
The equivalent changes and modifications that content is done according to the present invention are encompassed by the scope of the patents of the invention.
Claims (5)
1. a kind of optics precoating polyester film, which is characterized in that the optics precoating polyester film includes polyester base material layer and pre-
At least one surface of coating, the polyester base material layer is coated with precoated shet；The precoated shet include urethane acrylate and
Organic filler, the organic filler are bonded on the surface of substrate layer by urethane acrylate；
The raw material of the precoated shet includes following components:
Isocyanates 36.64-38.04%, polyvalent alcohol 32.34-38.36%, hydrophilic chain extender 3.85-5.38%, neutralizer
2.84-4.05%, methyl methacrylate 6.76-8.68%, n-butyl acrylate 11.51-11.65%；The percentage is
Weight percentage；The isocyanates is isophorone diisocyanate (IPDI), and the polyvalent alcohol is polyoxygenated
Propylene glycol (PPG), the hydrophilic chain extender are 2,2- dihydromethyl propionic acid (DMPA), and the neutralizer is triethylamine
(TEA)；
During the preparation process, the raw material of the precoated shet is first configured to pre-coating solution, and organic filler is added into pre-coating solution, described to have
The additive amount of machine particle is the 0.1-0.2% of solid content total weight in pre-coating solution；The organic filler is selected from poly- terephthaldehyde
Sour glycol ester (PET) microballoon, the partial size of the organic filler are 10-100nm.
2. optics precoating polyester film according to claim 1, which is characterized in that the preparation process of the pre-coating solution is as follows:
(1) base polyurethane prepolymer for use as is prepared
Polyurethane prepolymer precursor emulsion is prepared using isocyanates, polyvalent alcohol, hydrophilic chain extender and neutralizer；
(2) pre-coating solution is prepared
Polyurethane prepolymer precursor emulsion, the methyl methacrylate obtained using step (1), n-butyl acrylate prepare pre-coating solution.
3. optics precoating polyester film according to claim 2, which is characterized in that during the preparation process, add into pre-coating solution
Enter initiator, the additive amount of initiator is the 0-1.2% of solid content total weight in pre-coating solution.
4. a kind of brightness enhancement film, including basement membrane and brightness enhancement layer, which is characterized in that the basement membrane is optics described in claim 1 use
Precoat polyester film.
5. a kind of method for preparing optics precoating polyester film as claimed in claim 2, which is characterized in that the method includes under
State step:
The material of polyester base material layer is squeezed out into slab by extruder, then by slab longitudinal stretching, then to the table of substrate layer
Face carries out sided corona treatment, is then coated with pre-coating solution online on corona surface, then cross directional stretch, finally traction winding, and institute is made
The optics stated precoating polyester film.
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| CN201510876206.5A CN106832373B (en) | 2015-12-03 | 2015-12-03 | A kind of optics precoating polyester film and preparation method thereof and a kind of brightness enhancement film |
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| CN106832373B true CN106832373B (en) | 2019-11-15 |
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| CN108546325B (en) * | 2018-04-26 | 2019-07-09 | 山东益丰生化环保股份有限公司 | A kind of resin lens and preparation method thereof |
| KR102052843B1 (en) * | 2019-01-07 | 2019-12-06 | 도레이첨단소재 주식회사 | Polarizer-protecting polyester film and manufacturing method thereof and polarization plate using the same |
| CN110194846A (en) * | 2019-06-26 | 2019-09-03 | 江苏彩康隐形眼镜有限公司 | The preparation method of the modified and its colored Ortho-K in Ortho-K surface |
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| CN101384927A (en) * | 2006-02-22 | 2009-03-11 | 柯尼卡美能达精密光学株式会社 | Antireflection film, process for producing antireflection film, hard coat film, polarizer, and display |
| CN202592852U (en) * | 2012-04-23 | 2012-12-12 | 曾聪 | Anti-counterfeiting composite film |
| CN104098888A (en) * | 2014-06-27 | 2014-10-15 | 万华化学（广东）有限公司 | Preparation and application for water-based polyurethane dispersoid containing oligomer and vinyl monomer copolymer/polyurethane hybridization polymer granular |
| CN104228256A (en) * | 2014-09-12 | 2014-12-24 | 四川东方绝缘材料股份有限公司 | Single-sided or double-sided optical hardened polyester film and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101384927A (en) * | 2006-02-22 | 2009-03-11 | 柯尼卡美能达精密光学株式会社 | Antireflection film, process for producing antireflection film, hard coat film, polarizer, and display |
| CN202592852U (en) * | 2012-04-23 | 2012-12-12 | 曾聪 | Anti-counterfeiting composite film |
| CN104098888A (en) * | 2014-06-27 | 2014-10-15 | 万华化学（广东）有限公司 | Preparation and application for water-based polyurethane dispersoid containing oligomer and vinyl monomer copolymer/polyurethane hybridization polymer granular |
| CN104228256A (en) * | 2014-09-12 | 2014-12-24 | 四川东方绝缘材料股份有限公司 | Single-sided or double-sided optical hardened polyester film and preparation method thereof |
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