CN105058934A - Polyester film with high light transmittance and preparation method thereof - Google Patents

Polyester film with high light transmittance and preparation method thereof Download PDF

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Publication number
CN105058934A
CN105058934A CN201510527693.4A CN201510527693A CN105058934A CN 105058934 A CN105058934 A CN 105058934A CN 201510527693 A CN201510527693 A CN 201510527693A CN 105058934 A CN105058934 A CN 105058934A
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CN
China
Prior art keywords
polyester film
transmission rate
high transmission
mylar
coating
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Pending
Application number
CN201510527693.4A
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Chinese (zh)
Inventor
宋君荣
施波
赵赢
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SUZHOU FEIXIANG NEW MATERIAL RESEARCH INSTITUTE CO LTD
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SUZHOU FEIXIANG NEW MATERIAL RESEARCH INSTITUTE CO LTD
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Priority to CN201510527693.4A priority Critical patent/CN105058934A/en
Publication of CN105058934A publication Critical patent/CN105058934A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/36Layered products comprising a layer of synthetic resin comprising polyesters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/36Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/40Layered products comprising a layer of synthetic resin comprising polyurethanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243Coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/40Properties of the layers or laminate having particular optical properties
    • B32B2307/412Transparent

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  • Laminated Bodies (AREA)

Abstract

The invention discloses a composite polyester film with high light transmittance, which comprises a polyester film base layer and polyester resin coatings roller-coated on two sides of the polyester film base layer, wherein the refractive index of the polyester film base layer is 1.63-1.73, and the refractive index of the polyester resin coatings roller-coated on two sides of the polyester film is 1.45-1.65. By means of the difference between the refractive index of the polyester film base layer and the refractive index of the double-sided coating, the total transmittance of light on the composite polyester film is larger than or equal to 94.1 percent, the total light transmittance of the composite polyester film is improved by larger than or equal to 5 percent compared with the total light transmittance of the polyester film base layer, and meanwhile, the surface of the composite polyester film coated with the polyurethane coating and the polyacrylate coating has good bonding strength, so that the processing technology of the composite polyester film to become an optical film is easier.

Description

A kind of polyester film with high transmission rate and preparation method thereof
Technical field
The present invention relates to a kind of composite polyester film with high transmission rate and preparation method thereof, be specifically related to a kind of polyester film with coated on both sides for photovoltaic industry and preparation method thereof.
Background technology
Optical thin film is ubiquitous in our life, from accurate and optical device, display apparatus to the optical thin film application daily life; As glasses, digital camera, the various electrical home appliances worn at ordinary times, the anti-counterfeiting technology on mobile phone, computer or banknote, all can be referred to as the application of optical film technique.If there is no optical film technique as development foundation, modern age photoelectricity, communication or radium-shine technology cannot be in progress to some extent, this also demonstrates the importance of optical film technique research and development.Optical thin film means on optical element or separate substrates, and system plates or be coated with the combination of one or more layers dielectric film or metal film or this two classes film, to change the transmission characteristic of light wave, comprises the transmission of light, reflection, absorption, scattering, polarization and phase change.Therefore can the transmitance of modulation different-waveband element surface light via suitable design, in general, the mode of production of optical thin film is mainly divided into dry method and wet method two kinds of production technologies.In daily life see the packaging film of ornamental gold, silver color or tool metal-like, be exactly the product manufactured with dry type coating method.The way that wet is general is that the composition with various function is mixed into liquid coating, is coated on base material with different processing modes, then makes liquid coating dry solidification make product.
For increasing the light transmittance of optical thin film, studies in China person adopts the power increasing light source to increase the mode of brightness, but the increase of light source power means the increase of energy consumption, consider the demand that fundamentally can not meet high transmission rate optical thin film fast continual development from the angle of energy-conserving and environment-protective.
The transmitance reducing the reflection increase light of light in the mode by covering one deck diffusion barrier at Optical Coatings Surface is mentioned in Japan Patent JP2006-163378, but the optical thin film adhesion strength of uncoated polyester coatings is poor, brings inconvenience in optical thin film aftertreatment technology; JP-A-Hei5-744633 mentions the resin-coated transmitance promoting light at Optical Coatings Surface with graft modification, owing to not considering the resin-coated adhesion strength problem of graft modification, brings inconvenience equally in optical thin film aftertreatment technology.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of polyester film with high transmission rate, it can solve the high transmission rate problem of the polyester film for optics industry, can solve the good adhesion strength problem that polyester film needs in aftertreatment technology simultaneously.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of composite polyester film with high transmission rate, it comprises polyester film basic unit and the mylar coating of roller coat in polyester film basic unit both sides, the refractive index of described polyester film is 1.63-1.73, roller coat is 1.45-1.65 in the refractive index of the mylar coating of polyester film both sides, is coated with total transmitance >=94.1% of cated polyester film light;
Specific refractivity △ n >=0.05 of described polyester film and mylar coating, polyester coatings thickness is 50nm-150nm.
Described roller coat is the coating that polyurethane resin and/or polyacrylic resin are formed through roller coat in the mylar coating of polyester film both sides.
The side roller coat polyacrylic resin of described polyester film, the opposite side roller coat polyurethane resin of described polyester film.
For the requirement in satisfied different use field, in side mylar coating, add one or more in antistatic additive, ultra-violet absorber, waterproofing agent, levelling agent, heat stabilizer wherein;
Described antistatic additive is quaternary ammonium salt compound (mono-quaternaries, bi-quaternary ammonium salt, three quaternary ammonium salts, multi-quaternary ammonium salt or hyperbranched quaternary ammonium salt), one or more the mixture in Metal Zn, Ni metal, metal M n, metal Fe, metal A g;
Described ultra-violet absorber is benzophenone BP-4, ESCALOL 567, UV-531, benzotriazole UV1130 (BASF), 2-(2 '-hydroxyl-3,5 '-di-tert-butyl-phenyl) BTA, one or more the mixture in 2-(2 '-hydroxyl-3 '-tert-butyl group-5 '-aminomethyl phenyl)-5-chlorinated benzotriazole;
Described waterproofing agent is the compound of organosilicon alkanes, one or both mixtures of fluorochemical; Described levelling agent is one or more the mixture in organosilicon polymer EL-2829, EL-2826, EL-2825, EL-2519, EL-2513 of BYK company;
Described heat stabilizer is two (2; 4-di-tert-butyl-phenyl) pentaerythritol diphosphites; diphosphorous acid pentaerythrite distearyl alcohol ester; tricresyl phosphite (2; 4-di-tert-butyl-phenyl) ester; one or more mixture in N, N '-bis--(3-(3,5-di-tert-butyl-hydroxy phenyl) propiono) hexamethylene diamine.
For increasing the brightness of polyester film, add fluorescent whitening agent in side mylar coating wherein, described fluorescent whitening agent is the UvitexERH of Ciba company, one or more the mixture in ERN-P, OB-1.
For increasing transmission, in described polyester film preparation process, add one or both in filler-silicon dioxide, titanium dioxide, packing material size is 80-200nm.
Described polyester film is PET film or PC film.
Second technical problem to be solved by this invention is: provide a kind of preparation method with the composite polyester film of high transmission rate.
For solving second technical problem, the technical solution used in the present invention is: a kind of preparation method with the composite polyester film of high transmission rate, the steps include:
1) mylar is prepared by polymerisation, select add or do not add filler in polymerization process as required, the polyester resin solution of synthesis is dry, moisture control is at≤200ppm, dried mylar is put into melt extrude in equipment and cool with 70 ± 5 DEG C/min speed after extrusion molding, cooled mylar is carried out longitudinal stretching under 110 ± 5 DEG C of conditions, cross directional stretch is carried out under 140 ± 5 DEG C of conditions, obtaining thickness after carrying out thermal finalization at 200-235 DEG C is 180-300um, and refractive index is the polyester film of 1.63-1.73;
2) to solid content be 5-20%, viscosity is after the polyester resin solution of 20-60mpa.s enters curing agent, 1 ~ 3h is stirred under normal temperature (20 ~ 30 DEG C), polyester resin solution is rolled onto step 1) the polyester film both sides that obtain, controlling coating layer thickness by the mode of the distance with clearance gauge test roller coat slit is 50-150nm, after solidification to be coated, with WGT-S light transmittance mist degree analyzer test polyester film light transmittance.
Beneficial effect: in roller coat polyurethane coating and the polyacrylate coatings respectively of the polyester film two sides for photovoltaic industry, by means of the difference of the refractive index of polyester film and the refractive index of coated on both sides, make total transmitance >=94.1% of light on the cated polyester film of tool, promote transmitance >=5.0% of light at polyester film.
The polyester film surface simultaneously scribbling polyurethane coating and polyacrylate coatings has good adhesion strength, make polyester film become different purposes optical thin film preparation technology become easy, by continuous online roller coating technology, make the easy industrialization of the optical thin film of high transmission rate.
Detailed description of the invention
Embodiment 1
The preparation of uncoated polyester film
In PETG polymerization process, add the TiO that particle diameter is 100nm 2filler 400ppm, by the PETG after polymerization under 180 DEG C of conditions after dry 9h, put into melt extrude in equipment and cool with 70 ± 5 DEG C/min speed after extrusion molding, cooled PETG is carried out longitudinal stretching under 110 ± 5 DEG C of conditions, under 140 ± 5 DEG C of conditions, carry out cross directional stretch, after carrying out thermal finalization at 200-235 DEG C, obtain required polyester film.
The polyester film test data of preparation is as follows
Project name Thickness (um) Refractive index Light transmittance
Pet film 200um 1.64 88.3%
Embodiment 2
Two sides is coated with the polyester film of polyurethane coating
Be 5.5% to solid content, viscosity is the wetting agent adding 0.1g organosiloxane class in the polyurethane solutions of 20mpa.s, curing agent N, N'-dicyclohexylcarbodiimide 0.12g, after stirred at ambient temperature 1h, be coated in by roll coating model on the polyester film of example 1 by polyurethane solutions spreading rod, after waiting curing of coatings, test polyester film light transmittance is as follows
Embodiment 3
Two sides is coated with the polyester film of polyacrylate coatings
Be 5.5% to solid content, viscosity is the wetting agent adding 0.1g organosiloxane class in the polyacrylate solution of 20mpa.s, melamine-based curing agent 0.15g, after stirred at ambient temperature 1h, polyacrylate solution spreading rod is coated in by roll coating model on the polyester film of example 1, after curing of coatings, test polyester film light transmittance is as follows
Embodiment 4
Two sides is coated with the polyester film of polyacrylate and polyurethane coating respectively
By the polyurethane of preparation in example 2 and example 3, polyacrylate solution, roller coat is on the two sides of polyester film respectively, and after solidification, the light transmittance of testing film is as follows

Claims (10)

1. one kind has the composite polyester film of high transmission rate, it is characterized in that: comprise polyester film basic unit and the mylar coating of roller coat in polyester film basic unit both sides, the refractive index of described polyester film basic unit is 1.63-1.73, and roller coat is 1.45-1.65 in the refractive index of the mylar coating of polyester film both sides;
Specific refractivity △ n >=0.05 of described polyester film basic unit and mylar coating, mylar coating layer thickness is 50nm-150nm.
2. a kind of composite polyester film with high transmission rate according to claim 1, is characterized in that: described roller coat is the coating that polyurethane resin and/or polyacrylic resin are formed through roller coat in the mylar coating of polyester film basic unit both sides.
3. a kind of composite polyester film with high transmission rate according to claim 2, is characterized in that: the side roller coat polyacrylic resin of described polyester film basic unit, the opposite side roller coat polyurethane resin of described polyester film basic unit.
4. a kind of composite polyester film with high transmission rate according to claim 1, it is characterized in that: described mylar coating, in the mylar coating of wherein side, add one or more in antistatic additive, ultra-violet absorber, waterproofing agent, levelling agent, heat stabilizer.
5. a kind of composite polyester film with high transmission rate according to claim 4, is characterized in that: described antistatic additive is one or more the mixture in quaternary ammonium salt compound, Metal Zn, Ni metal, metal M n, metal Fe, metal A g;
Described ultra-violet absorber is benzophenone BP-4, ESCALOL 567, UV-531, benzotriazole UV1130,2-(2 '-hydroxyl-3,5 '-di-tert-butyl-phenyl) BTA, one or more the mixture in 2-(2 '-hydroxyl-3 '-tert-butyl group-5 '-aminomethyl phenyl)-5-chlorinated benzotriazole;
Described waterproofing agent is the compound of organosilicon alkanes, one or both mixture of fluorochemical;
Described levelling agent is one or more the mixture in organosilicon polymer EL-2829, EL-2826, EL-2825, EL-2519, EL-2513;
Described heat stabilizer is two (2; 4-di-tert-butyl-phenyl) pentaerythritol diphosphites; diphosphorous acid pentaerythrite distearyl alcohol ester; tricresyl phosphite (2; 4-di-tert-butyl-phenyl) ester; one or more mixture in N, N '-bis--(3-(3,5-di-tert-butyl-hydroxy phenyl) propiono) hexamethylene diamine.
6. a kind of composite polyester film with high transmission rate according to claim 5, is characterized in that: described quaternary ammonium salt compound is one or more the mixture in mono-quaternaries, bi-quaternary ammonium salt, three quaternary ammonium salts, multi-quaternary ammonium salt, hyperbranched quaternary ammonium salt.
7. a kind of composite polyester film with high transmission rate according to claim 1, is characterized in that: described mylar coating, adds fluorescent whitening agent in the mylar coating of wherein side;
Described fluorescent whitening agent is one or more the mixture in UvitexERH, ERN-P, OB-1.
8. one according to claim 1 has high transmission rate polyester film, it is characterized in that: add filler-silicon dioxide and/or titanium dioxide in described polyester film basic unit; Packing material size is 80-200nm.
9. one according to claim 1 has high transmission rate polyester film, it is characterized in that: described polyester film is PET film or PC film.
10. a kind of preparation method with the composite polyester film of high transmission rate according to claim 1, the steps include:
1) mylar is prepared by polymerisation, select add or do not add filler in polymerization process as required, the polyester resin solution of synthesis is dried to moisture content≤200ppm, dried mylar cools with 70 ± 5 DEG C/min speed after extrusion molding by melt extruding in equipment, cooled mylar is carried out longitudinal stretching under 110 ± 5 DEG C of conditions, cross directional stretch is carried out under 140 ± 5 DEG C of conditions, obtaining thickness after carrying out thermal finalization at 200-235 DEG C is 180-300um, and refractive index is the polyester film of 1.63-1.73;
2) to solid content be 5-20%, viscosity is after adding curing agent in the polyester resin solution of 20-60mpa.s, stir 1 ~ 3h at normal temperatures, polyester resin solution is rolled onto step 1) both sides of polyester film that obtain, control coating layer thickness is 50-150nm, obtains the composite polyester film with high transmission rate.
CN201510527693.4A 2015-08-25 2015-08-25 Polyester film with high light transmittance and preparation method thereof Pending CN105058934A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106926534A (en) * 2017-03-09 2017-07-07 杭州福斯特应用材料股份有限公司 A kind of functional film of hot melting cohesion
CN108384037A (en) * 2018-03-01 2018-08-10 苏州维洛克电子科技有限公司 A kind of polyester film and preparation method thereof containing carbamide
CN108559119A (en) * 2018-01-31 2018-09-21 苏州维洛克电子科技有限公司 Flame retardant polyester sheet material of without phosphorus Halogen and preparation method thereof
CN109310055A (en) * 2016-05-30 2019-02-05 卢德维格斯文松股份公司 Energy saving greenhouse curtain
CN111093361A (en) * 2017-09-14 2020-05-01 卢德维格斯文松股份公司 Greenhouse curtain

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CN102036818A (en) * 2008-03-31 2011-04-27 可隆工业株式会社 Polyester film for optical application
CN102514275A (en) * 2011-11-10 2012-06-27 合肥乐凯科技产业有限公司 Optical polyester thin film and preparation method thereof
CN103740251A (en) * 2013-12-17 2014-04-23 张家港康得新光电材料有限公司 High-adhesion aqueous coating liquid for optical polyester film

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Publication number Priority date Publication date Assignee Title
US20080249226A1 (en) * 2007-04-09 2008-10-09 Nan Ya Plastics Corporation Waterborne coating compositions for optical-use polyester film
CN102036818A (en) * 2008-03-31 2011-04-27 可隆工业株式会社 Polyester film for optical application
CN102514275A (en) * 2011-11-10 2012-06-27 合肥乐凯科技产业有限公司 Optical polyester thin film and preparation method thereof
CN103740251A (en) * 2013-12-17 2014-04-23 张家港康得新光电材料有限公司 High-adhesion aqueous coating liquid for optical polyester film

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7004388B2 (en) 2016-05-30 2022-01-21 エービー ルドヴィグ スヴェンソン Energy saving greenhouse screen
US11723319B2 (en) 2016-05-30 2023-08-15 Ab Ludvig Svensson Energy saving greenhouse screen
KR102508728B1 (en) 2016-05-30 2023-03-10 에이비 루드빅 스벤쏜 Energy Saving Greenhouse Screens
CN109310055A (en) * 2016-05-30 2019-02-05 卢德维格斯文松股份公司 Energy saving greenhouse curtain
KR20190015714A (en) * 2016-05-30 2019-02-14 에이비 루드빅 스벤쏜 Energy saving greenhouse screen
JP2019517792A (en) * 2016-05-30 2019-06-27 エービー ルドヴィグ スヴェンソンAb Ludvig Svensson Energy saving greenhouse screen
AU2017272602B2 (en) * 2016-05-30 2022-08-04 Ab Ludvig Svensson Energy saving greenhouse screen
CN106926534B (en) * 2017-03-09 2019-07-23 杭州福斯特应用材料股份有限公司 A kind of functional film of hot melting cohesion
CN106926534A (en) * 2017-03-09 2017-07-07 杭州福斯特应用材料股份有限公司 A kind of functional film of hot melting cohesion
CN111093361A (en) * 2017-09-14 2020-05-01 卢德维格斯文松股份公司 Greenhouse curtain
CN111093361B (en) * 2017-09-14 2022-07-01 卢德维格斯文松股份公司 Greenhouse curtain
US12108717B2 (en) 2017-09-14 2024-10-08 Ab Ludvig Svensson Greenhouse screen
CN108559119A (en) * 2018-01-31 2018-09-21 苏州维洛克电子科技有限公司 Flame retardant polyester sheet material of without phosphorus Halogen and preparation method thereof
CN108384037A (en) * 2018-03-01 2018-08-10 苏州维洛克电子科技有限公司 A kind of polyester film and preparation method thereof containing carbamide

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