CN110484156A - A kind of 3D curved surface mobile phone TPU silicone protective film and preparation method thereof - Google Patents
A kind of 3D curved surface mobile phone TPU silicone protective film and preparation method thereof Download PDFInfo
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- CN110484156A CN110484156A CN201910684736.8A CN201910684736A CN110484156A CN 110484156 A CN110484156 A CN 110484156A CN 201910684736 A CN201910684736 A CN 201910684736A CN 110484156 A CN110484156 A CN 110484156A
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- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C09J183/00—Adhesives based on 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; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
- C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
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- C09J2483/00—Presence of polysiloxane
Abstract
The present invention provides a kind of 3D curved surface mobile phone TPU silicone protective films and preparation method thereof; the 3D curved surface mobile phone is multilayered structure, including PET base material layer, the first silicone pressure sensitive compound protective layer, polyacrylic resin hardened layer, optical grade PET base material layer, OCA optics polyacrylic acid glue-line, special optical grade thermoplastic TPU substrate layer, the second silicone pressure sensitive compound protective layer and PET fluorine element release film layer with TPU silicone protective film.The present invention have it is excellent can hot bending foldable type; good flexibility; the high adhesion strength design of silica gel; perfect it can be bonded 3D curved surface mobile phone screen; existing common 2.5D PET protection film is solved because its PET thermo-formability is poor; bent effect is poor; silica gel adhesion strength is low; easily occur after fitting Mobile phone screen grey side rebound warp phenomenon the problem of; pass through high adhesion strength; the high organic pressure-sensitive gel of transparency, the high smooth polyacrylate hardened layer of high abrasion high rigidity, realizes ease for use and high performance perfect combination.
Description
Technical field
The present invention relates to a kind of 3D curved surface mobile phone TPU silicone protective films and preparation method thereof, belong to safeguard film for cellular phone skill
Art field.
Background technique
With the development of electronics industry, more and more brand flagship mobile phones use 3D Curved screen OLED as its mobile phone
Screen.Existing safeguard film for cellular phone is also required to have hot-forming rear presentation 3D shape in the market, and is bonded after Mobile phone screen not
The technical essential that grey side rebound warps can occur.And existing common 2.5D PET protection film because its PET thermo-formability it is poor,
Bent effect is poor, and silica gel adhesion strength is low, and being bonded after Mobile phone screen easily appearance ash side, rebound the phenomenon that warps.
Summary of the invention
In view of the problems of the above-mentioned prior art, the object of the present invention is to provide a kind of 3D curved surface mobile phone TPU silica gel
Protective film and preparation method thereof.
The purpose of the present invention is achieved by the following technical programs:
A kind of 3D curved surface mobile phone TPU silicone protective film is multilayered structure, including PET base material layer, the first organosilicon pressure
Quick compound protective layer, polyacrylic resin hardened layer, optical grade PET base material layer, OCA optics polyacrylic acid glue-line, special optical grade
Thermoplasticity TPU substrate layer, the second silicone pressure sensitive compound protective layer and PET fluorine element release film layer.
Further, the PET base material layer, the first silicone pressure sensitive compound protective layer, the polyacrylic resin are hard
Change layer, the optical grade PET base material layer, the OCA optics polyacrylic acid glue-line, the special optical grade thermoplastic TPU substrate
Layer, the second silicone pressure sensitive compound protective layer and the PET fluorine element release film layer are successively bonded.
Further, the PET base material layer with a thickness of 25 μm -100 μm,
The first silicone pressure sensitive compound protective layer with a thickness of 5 μm -15 μm,
The polyacrylic resin hardened layer with a thickness of 2 μm -6 μm,
The optical grade PET base material layer with a thickness of 25 μm -125 μm,
The OCA optics polyacrylic acid glue-line with a thickness of 10 μm -30 μm,
The special optical grade thermoplastic TPU substrate layer with a thickness of 50 μm -125 μm,
The second silicone pressure sensitive compound protective layer with a thickness of 20 μm -40 μm,
The PET fluorine element release film layer with a thickness of 50 μm -100 μm.
Further, in terms of mass percentage, the first silicone pressure sensitive compound protective layer and the second silicone pressure sensitive
The raw material of compound protective layer forms
Solvent 50%-80%, silicon raw rubber 5%-20%, silicone resin 5%-20%, crosslinking agent 0.5%-1%, attachment are made every effort to promote
Into agent 0.5%-1% and catalyst 0.5%-1.5%, summation 100%；
Preferably, the solvent includes one in ethyl acetate, n-butyl acetate, toluene, PMA, butanone, IPA and ethyl alcohol
Kind or several combinations；
Preferably, the silicon raw rubber include ethenyl blocking dimethyl silicone polymer and/or ethenyl blocking poly- two
Methyl phenyl siloxane；
Preferably, the silicone resin includes MQ first class silicone resin or MQ first class phenyl polysiloxane；
Preferably, the crosslinking agent includes containing hydrogen silicone oil；
Preferably, the adhesion promoter includes the organosiloxane and/or routine of common compound carboxy blocking
Hydroxy-end capped organosiloxane；
Preferably, the catalyst is platinum catalyst.
Further, the polyacrylic resin hardened layer is anti-fingerprint polyacrylic resin hardened layer, the anti-fingerprint
The raw material of polyacrylic resin hardened layer is conventional anti-fingerprint polyacrylic resin hardening bath.
Further, the raw material composition of the polyacrylic resin hardened layer includes:
The photoinitiator of the solvent of 40-80 parts by weight, the resin of 20-60 parts by weight and 0.3-1 parts by weight；
The resin includes that polyurethane is acrylic resin modified and/or Organic fluoride modified polypropene acid resin；
The photoinitiator includes 2- hydroxy-2-methyl -1- phenylacetone and/or 1- hydroxycyclohexyl phenyl ketone；
The solvent includes the combination of one or more of ethyl acetate, n-butyl acetate, toluene, MIBK and PGM.
Further, the raw material of the special optical grade thermoplastic TPU substrate layer is organic multicomponent isocyanates and end hydroxyl
Based compound is copolymerized to obtain.
Further, the PET base material layer is general industry level PET substrate.
A kind of 3D curved surface mobile phone preparation method of TPU silicone protective film, includes the following steps:
By heat seeling coating method technique, raw material made from organic multicomponent isocyanates and terminal hydroxy group copolymer compound is existed
Coating film forming under 200-300 DEG C of molten condition obtains special optical grade thermoplastic TPU substrate layer；
Special light is coated on by Slot-die coating method after the raw material of second silicone pressure sensitive compound protective layer is mixed
On one face of classes and grades in school thermoplasticity TPU substrate layer, the second silicone pressure sensitive compound protective layer is obtained；
The raw material of polyacrylic resin hardened layer is coated on a face of optical grade PET base material layer, polypropylene is obtained
Acid resin hardened layer；
OCA optics polyacrylic acid is coated on the another of optical grade PET base material layer or special optical grade thermoplastic TPU substrate layer
On one face, OCA optics polyacrylic acid glue-line is obtained；
By OCA optics polyacrylic acid glue-line and uncoated corresponding optical grade PET base material layer or special optical grade heat
Plasticity TPU substrate layer fits；
The first silicone pressure sensitive is coated with by Slot-die coating method in the non-binding face of polyacrylic resin hardened layer
The raw material of compound protective layer obtains the first silicone pressure sensitive glue-line；
PET base material layer is bonded in the non-binding face of the first silicone pressure sensitive glue-line to get 3D curved surface mobile phone TPU silica gel is arrived
Protective film.
Further, which further includes the non-binding face fitting PET fluorine in the second silicone pressure sensitive glue-line
The step of plain release film layer.
Protrusion effect of the invention are as follows: a kind of 3D curved surface mobile phone of the invention can with excellent with TPU silicone protective film
Hot bending foldable type, good flexibility, the high adhesion strength design of silica gel perfect can be bonded 3D curved surface mobile phone screen, solve existing
There is common 2.5D PET protection film because its PET thermo-formability is poor, bent effect is poor, and silica gel adhesion strength is low, is bonded Mobile phone screen
Easily occur afterwards grey side rebound warp phenomenon the problem of, by high adhesion strength, the high organic pressure-sensitive gel of transparency, high abrasion is high hard
The high smooth polyacrylate hardened layer of degree, realizes ease for use and high performance perfect combination.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1-3.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now to skill of the invention
Art scheme carries out described further below, but should not be understood as that limiting the scope of the invention.Institute in following embodiments
Experimental method is stated, is conventional method unless otherwise specified；The reagent and material unless otherwise specified can be from business ways
Diameter obtains.
Embodiment 1
As shown in Figure 1, a kind of 3D curved surface mobile phone TPU silicone protective film of the present embodiment, is multilayered structure, including according to
The PET base material layer of secondary fitting, the first silicone pressure sensitive compound protective layer, polyacrylic resin hardened layer, optical grade PET base material layer,
OCA optics polyacrylic acid glue-line, special optical grade thermoplastic TPU substrate layer, the second silicone pressure sensitive compound protective layer and PET fluorine element
Release film layer.
PET base material layer with a thickness of 25 μm,
First silicone pressure sensitive compound protective layer with a thickness of 5 μm,
Polyacrylic resin hardened layer with a thickness of 2 μm,
Optical grade PET base material layer with a thickness of 25 μm,
OCA optics polyacrylic acid glue-line with a thickness of 10 μm,
Special optical grade thermoplastic TPU substrate layer with a thickness of 50 μm,
Second silicone pressure sensitive compound protective layer with a thickness of 20 μm,
PET fluorine element release film layer with a thickness of 50 μm.
In terms of mass percentage, the raw material of the first silicone pressure sensitive compound protective layer and the second silicone pressure sensitive compound protective layer
Composition includes:
Solvent 56.5%, silicon raw rubber 20%, silicone resin 20%, crosslinking agent 1%, adhesion promoter 1% and catalyst
1.5%, summation 100%；
Solvent includes the combination of ethyl acetate, ethyl alcohol 1:1 by volume；
Silicon raw rubber includes the dimethyl silicone polymer of ethenyl blocking；
Silicone resin includes MQ first class silicone resin；
Crosslinking agent includes containing hydrogen silicone oil；
Adhesion promoter includes the organosiloxane of common compound carboxy blocking；
Catalyst is platinum catalyst.
Polyacrylic resin hardened layer is anti-fingerprint polyacrylic resin hardened layer.
The raw material of polyacrylic resin hardened layer forms
The photoinitiator of the solvent of 40 parts by weight, the resin of 20 parts by weight and 0.3 parts by weight；
Resin includes that polyurethane is acrylic resin modified；
Photoinitiator includes 2- hydroxy-2-methyl -1- phenylacetone；
Solvent includes MIBK.
The raw material of special optical grade thermoplastic TPU substrate layer is that organic multicomponent isocyanates and terminal hydroxy group copolymer compound obtain
It arrives.
PET base material layer is general industry level PET substrate.
A kind of 3D curved surface mobile phone preparation method of TPU silicone protective film, includes the following steps:
By heat seeling coating method technique, raw material made from organic multicomponent isocyanates and terminal hydroxy group copolymer compound is existed
Coating film forming under 200 DEG C of molten conditions obtains special optical grade thermoplastic TPU substrate layer；
Special light is coated on by Slot-die coating method after the raw material of second silicone pressure sensitive compound protective layer is mixed
On one face of classes and grades in school thermoplasticity TPU substrate layer, the second silicone pressure sensitive compound protective layer is obtained；
The raw material of polyacrylic resin hardened layer is coated on a face of optical grade PET base material layer, polypropylene is obtained
Acid resin hardened layer；
OCA optics polyacrylic acid is coated on another face of optical grade PET base material layer, OCA optics polypropylene is obtained
Sour glue-line；
OCA optics polyacrylic acid glue-line is affixed with uncoated corresponding special optical grade thermoplastic TPU substrate layer
It closes；
The first silicone pressure sensitive is coated with by Slot-die coating method in the non-binding face of polyacrylic resin hardened layer
The raw material of compound protective layer obtains the first silicone pressure sensitive glue-line；
The first silicone pressure sensitive glue-line non-binding face be bonded PET base material layer, the second silicone pressure sensitive glue-line not
Binding face is bonded PET fluorine element release film layer to get 3D curved surface mobile phone TPU silicone protective film is arrived.
Embodiment 2
As shown in Figure 1, a kind of 3D curved surface mobile phone TPU silicone protective film of the present embodiment, is multilayered structure, including according to
The PET base material layer of secondary fitting, the first silicone pressure sensitive compound protective layer, polyacrylic resin hardened layer, optical grade PET base material layer,
OCA optics polyacrylic acid glue-line, special optical grade thermoplastic TPU substrate layer, the second silicone pressure sensitive compound protective layer and PET fluorine element
Release film layer.
PET base material layer with a thickness of 100 μm,
First silicone pressure sensitive compound protective layer with a thickness of 15 μm,
Polyacrylic resin hardened layer with a thickness of 6 μm,
Optical grade PET base material layer with a thickness of 125 μm,
OCA optics polyacrylic acid glue-line with a thickness of 30 μm,
Special optical grade thermoplastic TPU substrate layer with a thickness of 125 μm,
Second silicone pressure sensitive compound protective layer with a thickness of 40 μm,
PET fluorine element release film layer with a thickness of 100 μm.
In terms of mass percentage, the raw material of the first silicone pressure sensitive compound protective layer and the second silicone pressure sensitive compound protective layer
Composition includes:
Solvent 88%, silicon raw rubber 5%, silicone resin 5%, crosslinking agent 0.5%, adhesion promoter 0.5% and catalyst
1%, summation 100%；
Solvent includes the combination of PMA, butanone, IPA 1:1:1 by volume；
Silicon raw rubber includes the polydimethyl phenyl siloxane of ethenyl blocking；
Silicone resin includes MQ first class phenyl polysiloxane；
Crosslinking agent includes containing hydrogen silicone oil；
Adhesion promoter includes conventional hydroxy-end capped organosiloxane；
Catalyst is platinum catalyst.
Polyacrylic resin hardened layer is anti-fingerprint polyacrylic resin hardened layer.
The raw material of polyacrylic resin hardened layer forms
The photoinitiator of the solvent of 80 parts by weight, the resin of 60 parts by weight and 1 parts by weight；
Resin includes organic fluorine richness polyacrylic resin；
Photoinitiator includes 1- hydroxycyclohexyl phenyl ketone；
Solvent includes PGM.
The raw material of special optical grade thermoplastic TPU substrate layer is that organic multicomponent isocyanates and terminal hydroxy group copolymer compound obtain
It arrives.
PET base material layer is general industry level PET substrate.
A kind of 3D curved surface mobile phone preparation method of TPU silicone protective film, includes the following steps:
By heat seeling coating method technique, raw material made from organic multicomponent isocyanates and terminal hydroxy group copolymer compound is existed
Coating film forming under 300 DEG C of molten conditions obtains special optical grade thermoplastic TPU substrate layer；
Special light is coated on by Slot-die coating method after the raw material of second silicone pressure sensitive compound protective layer is mixed
On one face of classes and grades in school thermoplasticity TPU substrate layer, the second silicone pressure sensitive compound protective layer is obtained；
The raw material of polyacrylic resin hardened layer is coated on a face of optical grade PET base material layer, polypropylene is obtained
Acid resin hardened layer；
OCA optics polyacrylic acid is coated on another face of optical grade PET base material layer, OCA optics polypropylene is obtained
Sour glue-line；
OCA optics polyacrylic acid glue-line is affixed with uncoated corresponding special optical grade thermoplastic TPU substrate layer
It closes；
The first silicone pressure sensitive is coated with by Slot-die coating method in the non-binding face of polyacrylic resin hardened layer
The raw material of compound protective layer obtains the first silicone pressure sensitive glue-line；
The first silicone pressure sensitive glue-line non-binding face be bonded PET base material layer, the second silicone pressure sensitive glue-line not
Binding face is bonded PET fluorine element release film layer to get 3D curved surface mobile phone TPU silicone protective film is arrived.
Embodiment 3
As shown in Figure 1, a kind of 3D curved surface mobile phone TPU silicone protective film of the present embodiment, is multilayered structure, including according to
The PET base material layer of secondary fitting, the first silicone pressure sensitive compound protective layer, polyacrylic resin hardened layer, optical grade PET base material layer,
OCA optics polyacrylic acid glue-line, special optical grade thermoplastic TPU substrate layer, the second silicone pressure sensitive compound protective layer and PET fluorine element
Release film layer.
PET base material layer with a thickness of 50 μm,
First silicone pressure sensitive compound protective layer with a thickness of 10 μm,
Polyacrylic resin hardened layer with a thickness of 4 μm,
Optical grade PET base material layer with a thickness of 75 μm,
OCA optics polyacrylic acid glue-line with a thickness of 20 μm,
Special optical grade thermoplastic TPU substrate layer with a thickness of 100 μm,
Second silicone pressure sensitive compound protective layer with a thickness of 30 μm,
PET fluorine element release film layer with a thickness of 80 μm.
In terms of mass percentage, the raw material of the first silicone pressure sensitive compound protective layer and the second silicone pressure sensitive compound protective layer
Composition includes:
Solvent 65%, silicon raw rubber 15%, silicone resin 17.5%, crosslinking agent 0.8%, adhesion promoter 0.8% and catalysis
Agent 0.9%, summation 100%；
Solvent include ethyl acetate, n-butyl acetate, toluene according to volume ratio 1:1:1 combination；
Silicon raw rubber includes the dimethyl silicone polymer of ethenyl blocking and the polydimethyl phenyl siloxane of ethenyl blocking；
Silicone resin includes MQ first class silicone resin；
Crosslinking agent includes containing hydrogen silicone oil；
Adhesion promoter includes the organosiloxane of common compound carboxy blocking and conventional hydroxy-end capped organic
Siloxanes；
Catalyst is platinum catalyst.
Polyacrylic resin hardened layer is anti-fingerprint polyacrylic resin hardened layer.
The raw material of polyacrylic resin hardened layer forms
The photoinitiator of the solvent of 60 parts by weight, the resin of 40 parts by weight and 0.6 parts by weight；
Resin includes that polyurethane is acrylic resin modified and Organic fluoride modified polypropene acid resin；
Photoinitiator includes 2- hydroxy-2-methyl -1- phenylacetone and 1- hydroxycyclohexyl phenyl ketone；
Solvent includes that 1:1:1 is combined by volume for ethyl acetate, n-butyl acetate, toluene.
The raw material of special optical grade thermoplastic TPU substrate layer is that organic multicomponent isocyanates and terminal hydroxy group copolymer compound obtain
It arrives.
PET base material layer is general industry level PET substrate.
A kind of 3D curved surface mobile phone preparation method of TPU silicone protective film, includes the following steps:
By heat seeling coating method technique, raw material made from organic multicomponent isocyanates and terminal hydroxy group copolymer compound is existed
Coating film forming under 250 DEG C of molten conditions obtains special optical grade thermoplastic TPU substrate layer；
Special light is coated on by Slot-die coating method after the raw material of second silicone pressure sensitive compound protective layer is mixed
On one face of classes and grades in school thermoplasticity TPU substrate layer, the second silicone pressure sensitive compound protective layer is obtained；
The raw material of polyacrylic resin hardened layer is coated on a face of optical grade PET base material layer, polypropylene is obtained
Acid resin hardened layer；
OCA optics polyacrylic acid is coated on another face of special optical grade thermoplastic TPU substrate layer, obtains OCA
Optics polyacrylic acid glue-line；
OCA optics polyacrylic acid glue-line is fitted with uncoated corresponding optical grade PET base material layer；
The first silicone pressure sensitive is coated with by Slot-die coating method in the non-binding face of polyacrylic resin hardened layer
The raw material of compound protective layer obtains the first silicone pressure sensitive glue-line；
The first silicone pressure sensitive glue-line non-binding face be bonded PET base material layer, the second silicone pressure sensitive glue-line not
Binding face is bonded PET fluorine element release film layer to get 3D curved surface mobile phone TPU silicone protective film is arrived.
Embodiment 4
The present embodiment is with the obtained 3D curved surface mobile phone TPU silicone protective film of embodiment 1-3 and common PET in the prior art
2.5D protective film carries out performance comparison, and result is as shown in table 1 below:
Table 1
As seen from the above-described embodiment, the polyacrylic acid of the 3D curved surface mobile phone TPU silicone protective film of 1-3 of the embodiment of the present invention
Hardening of resin layer/optical grade PET base material layer/OCA optics polyacrylic acid glue-line/special optical grade thermoplastic TPU substrate/height adhesion
Power organic pressure-sensitive gel protect composite layer have it is excellent can hot bending foldable type, good flexibility, the high adhesion strength of silica gel sets
Meter, can perfect fitting 3D curved surface mobile phone screen, be not in that grey side warps rebound phenomena.In addition, by detection, embodiment 1-3
The full light transmission rate of composite membrane it is high (>=92%), mist degree is low (≤0.5%), and being fitted on mobile phone screen has excellent vision body
It tests；Hardened layer hardness is high (>=2H), and wear-resisting property is excellent (1000g*250 steel wool is without scuffing), can successfully manage and use
Various adverse circumstances in journey.
Claims (10)
1. a kind of 3D curved surface mobile phone TPU silicone protective film is multilayered structure, including PET base material layer, the first silicone pressure sensitive
Compound protective layer, polyacrylic resin hardened layer, optical grade PET base material layer, OCA optics polyacrylic acid glue-line, special optical grade heat
Plasticity TPU substrate layer, the second silicone pressure sensitive compound protective layer and PET fluorine element release film layer.
2. a kind of 3D curved surface mobile phone TPU silicone protective film according to claim 1, it is characterised in that: the PET base material
It is layer, the first silicone pressure sensitive compound protective layer, the polyacrylic resin hardened layer, the optical grade PET base material layer, described
OCA optics polyacrylic acid glue-line, the special optical grade thermoplastic TPU substrate layer, the second silicone pressure sensitive compound protective layer
It is successively bonded with the PET fluorine element release film layer.
3. a kind of 3D curved surface mobile phone TPU silicone protective film according to claim 1 or 2, it is characterised in that: the PET
Substrate layer with a thickness of 25 μm -100 μm,
The first silicone pressure sensitive compound protective layer with a thickness of 5 μm -15 μm,
The polyacrylic resin hardened layer with a thickness of 2 μm -6 μm,
The optical grade PET base material layer with a thickness of 25 μm -125 μm,
The OCA optics polyacrylic acid glue-line with a thickness of 10 μm -30 μm,
The special optical grade thermoplastic TPU substrate layer with a thickness of 50 μm -125 μm,
The second silicone pressure sensitive compound protective layer with a thickness of 20 μm -40 μm,
The PET fluorine element release film layer with a thickness of 50 μm -100 μm.
4. a kind of 3D curved surface mobile phone TPU silicone protective film according to claim 1 or 2, it is characterised in that: with quality hundred
The raw material composition of point content meter, the first silicone pressure sensitive compound protective layer and the second silicone pressure sensitive compound protective layer includes:
Solvent 50%-80%, silicon raw rubber 5%-20%, silicone resin 5%-20%, crosslinking agent 0.5%-1%, adhesion promoter
0.5%-1% and catalyst 0.5%-1.5%, summation 100%；
Preferably, the solvent include one of ethyl acetate, n-butyl acetate, toluene, PMA, butanone, IPA and ethyl alcohol or
Several combinations；
Preferably, the silicon raw rubber includes the dimethyl silicone polymer of ethenyl blocking and/or the poly dimethyl of ethenyl blocking
Phenyl siloxane；
Preferably, the silicone resin includes MQ first class silicone resin or MQ first class phenyl polysiloxane；
Preferably, the crosslinking agent includes containing hydrogen silicone oil；
Preferably, the adhesion promoter includes the organosiloxane and/or hydroxy-end capped organosilicon of compound carboxy blocking
Oxygen alkane；
Preferably, the catalyst is platinum catalyst.
5. a kind of 3D curved surface mobile phone TPU silicone protective film according to claim 1 or 2, it is characterised in that: described poly- third
Olefin(e) acid hardening of resin layer is anti-fingerprint polyacrylic resin hardened layer.
6. a kind of 3D curved surface mobile phone TPU silicone protective film according to claim 5, it is characterised in that: the polypropylene
The raw material of acid resin hardened layer forms
The photoinitiator of the solvent of 40-80 parts by weight, the resin of 20-60 parts by weight and 0.3-1 parts by weight；
The resin includes that polyurethane is acrylic resin modified and/or Organic fluoride modified polypropene acid resin；
The photoinitiator includes 2- hydroxy-2-methyl -1- phenylacetone and/or 1- hydroxycyclohexyl phenyl ketone；
The solvent includes the combination of one or more of ethyl acetate, n-butyl acetate, toluene, MIBK and PGM.
7. a kind of 3D curved surface mobile phone TPU silicone protective film according to claim 1 or 2, it is characterised in that: described special
The raw material of optics grade thermoplastic TPU substrate layer is that organic multicomponent isocyanates and terminal hydroxy group copolymer compound obtain.
8. a kind of 3D curved surface mobile phone TPU silicone protective film according to claim 1 or 2, it is characterised in that: the PET
Substrate layer is general industry level PET substrate.
9. a kind of described in any item preparation methods of 3D curved surface mobile phone TPU silicone protective film of claim 1-8, including it is as follows
Step:
By heat seeling coating method technique, by raw material made from organic multicomponent isocyanates and terminal hydroxy group copolymer compound in 200-
Coating film forming under 300 DEG C of molten conditions obtains special optical grade thermoplastic TPU substrate layer；
Special optical grade is coated on by Slot-die coating method after the raw material of second silicone pressure sensitive compound protective layer is mixed
On one face of thermoplasticity TPU substrate layer, the second silicone pressure sensitive compound protective layer is obtained；
The raw material of polyacrylic resin hardened layer is coated on a face of optical grade PET base material layer, polyacrylic acid tree is obtained
Rouge hardened layer；
OCA optics polyacrylic acid is coated on another of optical grade PET base material layer or special optical grade thermoplastic TPU substrate layer
On face, OCA optics polyacrylic acid glue-line is obtained；
By OCA optics polyacrylic acid glue-line and uncoated corresponding optical grade PET base material layer or special optical grade thermoplastic
TPU substrate layer fits；
The first organic pressure-sensitive gel is coated with by Slot-die coating method in the non-binding face of polyacrylic resin hardened layer to protect
The raw material of sheath obtains the first silicone pressure sensitive glue-line；
It is silica gel protected with TPU to get 3D curved surface mobile phone is arrived in the non-binding face fitting PET base material layer of the first silicone pressure sensitive glue-line
Film.
10. preparation method according to claim 9, it is characterised in that: the preparation method further includes in the second organosilicon pressure
The non-binding face of quick glue-line is bonded the step of PET fluorine element release film layer.
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| US11924982B2 (en) | 2020-11-17 | 2024-03-05 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Curved display apparatus and method of fabricating curved display apparatus |
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| CN113122156A (en) * | 2021-04-29 | 2021-07-16 | 江西昊泽光学膜科技有限公司 | Anti-fingerprint high-transmittance TPU (thermoplastic polyurethane) protective film suitable for curved AF (AF) screen, preparation method and application thereof |
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Application publication date: 20191122 |