CN106947404A - A kind of Electric radiant Heating Film high temperature resistant precoating encapsulation composite membrane - Google Patents

A kind of Electric radiant Heating Film high temperature resistant precoating encapsulation composite membrane Download PDF

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Publication number
CN106947404A
CN106947404A CN201710171892.5A CN201710171892A CN106947404A CN 106947404 A CN106947404 A CN 106947404A CN 201710171892 A CN201710171892 A CN 201710171892A CN 106947404 A CN106947404 A CN 106947404A
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layer
thermoplastic resin
intermediate layer
encapsulating film
substrate layer
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曹华
董子尧
高文华
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ZHANGJIAGANG FREE TRADE ZONE KANGDE FILM INDUSTRY CO., LTD.
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BEIJING KANGDEXIN FUNCTION MATERIAL Co Ltd
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Priority to CN201710171892.5A priority Critical patent/CN106947404A/en
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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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • 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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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/08—Copolymers of ethene
    • C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
    • C09J151/06—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
    • 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
    • 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
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • 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
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
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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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2451/00—Presence of graft polymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • C09J2475/003—Presence of polyurethane in the primer coating

Abstract

Encapsulating film is precoated with high temperature resistant the invention discloses a kind of Electric radiant Heating Film, including：Substrate layer, intermediate layer and thermoplastic resin layer；The substrate layer is biaxial stretching polyester layer, and with electrical insulation capability, electrical strength is 78V/um, and vertically and horizontally percent thermal shrinkage is less than 1%；On described intermediate layer, the surface for being arranged on the substrate layer, formed by polyurethane, polyester or acrylate, curing agent, diluent, the curing agent is isocyanates；The coating dry weight in the intermediate layer is 0.2 3g/m2；The thermoplastic resin layer is arranged on another surface in the intermediate layer, 70 DEG C of thermoplastic resin layer brittle temperature ＜, and the thermoplastic resin layer is >=2 layers of laminated construction.Product of the present invention is resistant to 70 140 degree of high-temperature bakings, and good stability of the dimension, shrinkage factor is small, and is resistant to high humidity environment, by the adhesion properties that modified thermoplastic resin is excellent, has good adhesive effect to metallic plate, plastic sheet etc..

Description

A kind of Electric radiant Heating Film high temperature resistant precoating encapsulation composite membrane
Technical field
The present invention relates to a kind of composite film material for being packaged to building field Electric radiant Heating Film, more particularly to a kind of electricity Hotting mask high-temperature baking resistant composite membrane.
Background technology
Electric radiant Heating Film is divided into high temperature, low temperature electric heating film.High-temperature electric heating membrane is generally used for electronic apparatus, military affairs etc..Low-temp. electrothermal Film is the translucent polyester film that can be generated heat after a kind of energization, by conductive special ink, metal current-carrying bar be processed, hot pressing It is made between insulation polyester film.Using Electric radiant Heating Film as heater during work, heat is sent into space in the form of radiation, makes human body Obtain warm first with object, its resultant effect is better than traditional convection current heating system.
Electric heating heating film principle be product in the presence of electric field, carbon micel in heater produces " Brownian movement ", Violent friction and shock occurs between carbon molecule, the heat energy of generation is externally transmitted in the form of far infrared radiation and convection current, its The conversion ratio of electric energy and heat energy is up to more than 98%.The effect of carbon molecule is brought rapidly up system surfaces.Electric radiant Heating Film is warmed up into heating System be arranged on wall () on face, heat energy will continuously be evenly transferred to each corner in room.
Electric heating film properties need to meet：(1) it is high pressure resistant, more than 3750v test voltage is withstood up to, and without breakage.(2) resist Aging, the material of Electric radiant Heating Film is special special material, with good characteristic, it is anti-aging, never degenerate, performance is stable, use The time limit is of the same age with building.(3) humidity, Electric radiant Heating Film is integrally waterproof, is surveyed through 48 hours resistance to more than 3750V high pressures of immersion Examination, its service behaviour is normal, no leaky.(4) toughness is high, and according to test, the stretching resistance of Electric radiant Heating Film need to be up to 20 kilograms.(5) Shrink small, in the burn-in test of 2100 hours, shrinkage factor is less than 2%.
Ceiling panei heating with electro-thermal film system can be used in various types of buildings.It is used as a kind of excellent heating system System, is applicable not only to the north, is more suitable for most of southern area of the winter without warming installation.It can be widely applied to villa, business Product room, affordable housing, rural area from building a house, etc. residential houses；School, hospital, the superfine public building of business, and rural urbanization The fields such as construction, road snow melt, Electric radiant Heating Film, which has, wide uses prospect.
But Electric radiant Heating Film cannot be directly used to terrestrial surface radiation heat supply, it is necessary to which additional encapsulating film or pipe sleeve, could be used for ground Heating, it is ensured that using effect and life-span.Therefore, according to the characteristic of Electric radiant Heating Film product, it, which encapsulates composite membrane, need to be resistant to 70-100 degree High-temperature baking and Hi-pot test, continuous operation 26000 hours, performance and size constancy.And it is humidity, anti-aging, in heat seal Cheng Zhong, makes fully to polymerize between diaphragm, bubble-free, not aliquation, it is ensured that heater and current-carrying bar, the close knot of composite package film Close.
Existing technology can not meet requirements above.
The content of the invention
It is contemplated that at least solving problem of the prior art to a certain extent.Therefore, one object of the present invention exists It is a kind of with 70-100 degree high-temperature baking and Hi-pot test is resistant in proposing, continuously run hours up to ten thousand, performance and size constancy. It is humidity, anti-aging, and during heat seal, make fully to polymerize between diaphragm and Electric radiant Heating Film, bubble-free, not aliquation, it is ensured that hair Hot body and current-carrying bar, the encapsulating film product combined closely of composite package film.
The technical scheme is that：
A kind of Electric radiant Heating Film precoats encapsulating film with high temperature resistant, including：Substrate layer, intermediate layer and thermoplastic resin layer；The bottom Material layer is biaxial stretching polyester layer, and with electrical insulation capability, electrical strength is 78V/um, and vertically and horizontally percent thermal shrinkage is less than 1%；Institute On the intermediate layer stated, the surface for being arranged on the substrate layer, by polyurethane, polyester or acrylate, curing agent, dilution dosage form Into the curing agent is isocyanates；The coating dry weight in the intermediate layer is 0.2-3g/m2；The thermoplastic resin layer is set Put on another surface in the intermediate layer, ＜ -70 DEG C of thermoplastic resin layer brittle temperature, the thermoplastic resin layer is >=2 The laminated construction of layer.
The percentage by weight of the polyurethane in the intermediate layer, polyester or acrylate is 20%-60%, the curing agent Percentage by weight is less than 10%, and remaining composition is diluent；Described diluent is organic solvent；The curing agent is isocyanic acid Esters, the coating dry weight in the intermediate layer is 0.2-3g/m2。
It is preferred that, the thermoplastic resin layer is modified by maleic acid anhydride graft polyolefin, or ethene-vinyl acetate copolymerization The one or more of thing or olefin copolymer.
It is preferred that, described diluent includes but is not limited to ethyl acetate, butanone.It is preferred that, the thermoplastic resin layer It is arranged at for 2 layers of laminated construction, including resin bed a and resin bed b, resin bed b between intermediate layer and resin bed a, resin bed a It is placed in outermost.
It is preferred that, the resin bed b fusing points are 85-125 DEG C, and melt index MI is between 15.0-40.0；The resin bed A fusing points are 120-140 DEG C, and melt index MI is between 3.0-20.0.
The thickness of the substrate layer is 50-250 μm, and the thickness in intermediate layer is 0.5-3 μm, and the thickness of thermoplastic resin layer is 30-150μm。
It is preferred that, the thickness of the substrate layer is 100-150 μm；The thickness in intermediate layer is 2-3 μm；Thermoplastic resin layer Thickness is 50-100 μm.
Described Electric radiant Heating Film precoats the preparation method of encapsulating film with high temperature resistant, it is characterised in that：Step is：
1) it is coated with the surface of substrate layer by mixing that polyurethane, polyester or acrylate and diluent, curing agent are formed Close liquid and dry, to form intermediate layer on the surface of the substrate layer；
2) co-extrusion coating ethylene-acetate ethylene copolymer on the intermediate layer, or olefin copolymer, or maleic anhydride connect Branch modified polyolefin hydrocarbon copolymer is to form thermoplastic resin layer b；
3) co-extrusion coats modified by maleic acid anhydride graft polyolefin copolymer to form thermoplastic on the thermoplastic resin layer b Property resin bed a；
4) sided corona treatment is done to the thermoplastic resin layer a surfaces, finally winding obtains high temperature resistant precoating encapsulating film.
The step 1) include：Sided corona treatment is carried out to the inner surface of the substrate layer, the surface of the substrate layer is reached Because value reaches more than 48；It is coated with the ground layer surface Jing Guo sided corona treatment by polyurethane or acrylate and curing agent The mixed liquor of formation and drying, drying temperature are 65-95 DEG C；
The step 3) and step 4) in, in addition it is also necessary to ozone processing is carried out to resin bed b, the concentration of ozone is 40%, work( Rate 800W, gas flow is 3.5SCXFM.
Beneficial effects of the present invention are：
Electric radiant Heating Film high temperature resistant precoating encapsulating film of the present invention has superelevation insulation characterisitic, in addition, intermediate layer conduct The binder couse of substrate layer and resin bed, can be greatly enhanced the adhesive force between two layers, and with necessarily resistance to after overcuring Hot properties.
The resin bed of the present invention uses stack-design, high-melting-point lazy flow modified polyolefin resin layer as hot sealing layer with Electric radiant Heating Film encapsulation is compound, it is ensured that humidity resistance and resistance to deformation behavior after encapsulation, low melting point high fluidity olefin polymer are made To bond the interlayer of substrate layer and modified polyolefin resin layer, two layers of adhesiveness, and hot compound tense Flashmelt can be improved, The melting molecular gap of high fluidity can also allow the air on compound tense surface quickly to be discharged, and improve substrate layer and resin hot sealing layer Combined strength bination.
＜ -70 DEG C of the resin bed brittle temperature, the characteristic such as melt index can be well adapted to extrude compounding machine single screw rod Extrusion characteristics, have extraordinary film forming characteristics and rheological property under extrusion molten condition, are designed in extrusion composite technology It is middle that excellent processability is provided, and suitable high speed extrusion is compound, necking down is small to waste few.
The present invention adjusts resin characteristics by the stack-design of 2 kinds or two or more thermoplastic resin, borrows existing squeeze Going out or being coextruded composite production device can successfully produce that thickness evenness is good, the high bonding force composite membrane of excellent processability, Product is resistant to 70-140 degree high-temperature bakings, and good stability of the dimension, shrinkage factor is small, and is resistant to high humidity environment, by modified thermoplastic The excellent adhesion properties of resin, have good adhesive effect to metallic plate, plastic sheet etc..
High temperature resistant Electric radiant Heating Film of the present invention need to only carry out heating pressurization with precoating encapsulating film to film/film and production can be achieved Environmental protection, safety in production, safe handling can be achieved in the encapsulation of product, whole solvent-free volatilization, no chemical residues.Using insulation Excellent performance, electrical strength reach 78V/um, breakdown voltage be more than 4.0kV speciality PET as ground, using 2 kinds or two or more Thermoplastic resin compounding is as the thermoplastic resin layer that can be adapted to extrude, and resin can high-temp resisting high-humidity resisting, ageing-resistant deformation, long-term Bubble-free keeps lasting encapsulation characteristic without skinning phenomenon during use.This is a kind of New Electrothermal Film encapsulation technology product.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Wherein：1：Substrate layer, 2：Intermediate layer, 3：Thermoplastic resin layer, a：Resin bed a, b：Resin bed b.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to The embodiment of accompanying drawing description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more, Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under " It can directly be contacted including the first and second features, can also not be direct contact including the first and second features but by it Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " fisrt feature that includes are directly over second feature and oblique upper, or be merely representative of Fisrt feature level height is less than second feature.
Embodiment 1：A kind of Electric radiant Heating Film precoats encapsulating film with high temperature resistant
As shown in figure 1, a kind of Electric radiant Heating Film precoats encapsulating film, including substrate layer 1, intermediate layer 2 and thermoplastic resin with high temperature resistant Lipid layer 3；Wherein, substrate layer 1 is biaxial stretching polyester (BOPET) layer；The thickness of substrate layer 1 is 50 μm；Intermediate layer 2 is arranged on bottom Material layer and is formed 1 surface by polyurethane, curing agent, diluent, and the curing agent is isocyanates, and diluent is acetic acid second Ester；
The polyurethane content 30% of intermediate layer 2, curing agent 5%, remaining is ethyl acetate diluent, and coating dry weight is 0.2g/ m2, thickness is 0.5 μm；
The resin bed b of thermoplastic resin layer 3 is arranged on intermediate layer 2 and is ethylene-vinyl acetate copolymer, resin bed a Be arranged on resin bed b, and for maleic anhydride grafted PP, the resin bed b fusing points between 85-125 DEG C, In the resin bed resin bed a fusing points be 120-140 DEG C between, ＜ -70 DEG C of resin bed brittle temperature, thermoplastic resin layer 3 Thickness is 30 μm；A, b two layers of thickness ratio 2:8；
Thus, intermediate layer 2 can be greatly enhanced the adhesive force between two layers as substrate layer and the binder couse of resin bed. Modified thermoplastic resin layer 3 can not only strengthen the cohesive force between composite membrane and clad sheet, and can meet the later stage and use When the degree of resistance to 70-100 high temperature requirement, and ageing-resistant, high humidity function admirable, composite membrane combined strength bination is high, compound with electric-heating membrane The situation of demoulding foaming occurs for Shi Buhui.
Embodiment 2
As shown in figure 1, a kind of Electric radiant Heating Film precoats encapsulating film, including substrate layer 1, intermediate layer 2 and thermoplastic resin with high temperature resistant Lipid layer 3；Wherein, substrate layer 1 is biaxial stretching polyester (BOPET) layer；The thickness of substrate layer 1 is 100 μm；Intermediate layer 2 is arranged on The surface of substrate layer 1 and formed by acrylate, curing agent, diluent, the curing agent is isocyanates, and diluent is butanone Class；
The polyurethane content 30% of intermediate layer 2, curing agent 5%, remaining is ethyl acetate diluent, coating dry weight 0.2g/m2, Thickness is 0.5 μm；
The resin bed b of thermoplastic resin layer 3 is arranged on intermediate layer 2 and is that ethylene-vinyl acetate copolymer or alkene are common Polymers, resin bed a is arranged on resin bed b, and is maleic anhydride grafted PP, and the resin bed b fusing points exist Between 85-125 DEG C, resin bed a fusing points is between 120-140 DEG C, ＜ -70 DEG C of resin bed brittle temperature are hot in the resin bed The thickness of plastic resin layers 3 is 100 μm；A, b two layers of thickness ratio 3:7；
Thus, intermediate layer 2 can be greatly enhanced the adhesive force between two layers as substrate layer and the binder couse of resin bed. Modified thermoplastic resin layer 3 can not only strengthen the cohesive force between composite membrane and clad sheet, and can meet the later stage and use When the degree of resistance to 70-100 high temperature requirement, and ageing-resistant, high humidity function admirable, composite membrane combined strength bination is high, compound with electric-heating membrane The situation of demoulding foaming occurs for Shi Buhui.
Embodiment 3：A kind of Electric radiant Heating Film precoats encapsulating film with high temperature resistant
A kind of Electric radiant Heating Film precoats encapsulating film with high temperature resistant, including：Substrate layer, intermediate layer and thermoplastic resin layer, the bottom Material layer is biaxial stretching polyester layer, and with electrical insulation capability, electrical strength reaches 78V/um, and vertically and horizontally percent thermal shrinkage is less than 1%, Thickness is 250 μm；
On described intermediate layer, the surface for being arranged on the substrate layer, formed by polyurethane, curing agent, diluent, it is described Curing agent is isocyanates, and the coating dry weight in the intermediate layer is 3g/m2, thickness is 3 μm；
The thermoplastic resin layer is arranged on another surface in the intermediate layer, and thermoplastic resin layer brittle temperature ＜- 70℃；
The thermoplastic resin layer is to contain modified by maleic acid anhydride graft polyolefin；
The thermoplastic resin layer is 3 layers of stromatolithic structure, and gross thickness is that 150 μm, a, b, b layers of thickness proportion is 2:1: 1。
A kind of preparation method of described precoating encapsulating film, comprises the following steps：
1) mixed liquor formed by polyurethane or acrylate and diluent, curing agent is coated with the surface of substrate layer simultaneously Drying, to form intermediate layer on the surface of the substrate layer；
2) co-extrusion coating ethylene-acetate ethylene copolymer on the intermediate layer, or olefin copolymer, or maleic anhydride connect Branch modified polyolefin hydrocarbon copolymer is to form thermoplastic resin layer b；
3) co-extrusion coats modified by maleic acid anhydride graft polyolefin copolymer to form thermoplastic on the thermoplastic resin layer b Property resin bed a；
4) sided corona treatment is done to the thermoplastic resin layer a surfaces, finally winding obtains high temperature resistant precoating encapsulating film.
The step 1) include：
Sided corona treatment 2-1) is carried out to the inner surface of the substrate layer, make the substrate layer surface dynes value reach 48 with On；
2-2) it is coated with the ground layer surface Jing Guo sided corona treatment by polyurethane, polyester or acrylate and solidification Dosage form into mixed liquor and drying, drying temperature be 65-95 DEG C.
The step 3) and step 4) in, in addition it is also necessary to ozone processing is carried out to resin bed b, the concentration of ozone is 40%, work( Rate 800W, gas flow is 3.5SCXFM.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.

Claims (10)

1. a kind of Electric radiant Heating Film precoats encapsulating film with high temperature resistant, it is characterised in that including：Substrate layer, intermediate layer and thermoplastic resin Layer；The substrate layer is biaxial stretching polyester layer, and with electrical insulation capability, electrical strength is 78V/um, vertically and horizontally percent thermal shrinkage Less than 1%；On described intermediate layer, the surface for being arranged on the substrate layer, by polyurethane, polyester or acrylate, curing agent, Diluent is formed, and the curing agent is isocyanates；The coating dry weight in the intermediate layer is 0.2-3g/m2；The thermoplasticity Resin bed is arranged on another surface in the intermediate layer, ＜ -70 DEG C of thermoplastic resin layer brittle temperature, the thermoplastic resin Layer is >=2 layers of laminated construction.
2. precoating encapsulating film according to claim 1, it is characterised in that：Polyurethane, polyester or the propylene in the intermediate layer The percentage by weight of acid esters is 20%-60%, and the percentage by weight of the curing agent is less than 10%, and remaining composition is diluent； Described diluent is organic solvent；The curing agent is isocyanates, and the coating dry weight in the intermediate layer is 0.2-3g/ m2。
3. precoating encapsulating film according to claim 1, it is characterised in that：The thermoplastic resin layer is grafted for maleic anhydride Improved polyalkene, or ethylene-vinyl acetate copolymer or olefin copolymer one or more.
4. precoating encapsulating film according to claim 1, it is characterised in that：Described diluent includes but is not limited to acetic acid second Ester, butanone.
5. according to any described precoating encapsulating film of claims 1 to 3, it is characterised in that：The thermoplastic resin layer is 2 layers Laminated construction, including resin bed a and resin bed b, resin bed b are arranged between intermediate layer and resin bed a, and resin bed a is placed in most Outside.
6. precoating encapsulating film according to claim 5, it is characterised in that：The resin bed b fusing points are 85-125 DEG C, melting Index M I is between 15.0-40.0；The resin bed a fusing points are 120-140 DEG C, and melt index MI is between 3.0-20.0.
7. precoating encapsulating film according to claim 5, it is characterised in that：The thickness of the substrate layer is 50-250 μm, in The thickness of interbed is 0.5-3 μm, and the thickness of thermoplastic resin layer is 30-150 μm.
8. precoating encapsulating film according to claim 8, it is characterised in that：The thickness of the substrate layer is 100-150 μm；In The thickness of interbed is 2-3 μm；The thickness of thermoplastic resin layer is 50-100 μm.
9. Electric radiant Heating Film according to claim 7 precoats the preparation method of encapsulating film with high temperature resistant, it is characterised in that：Step For：
1) mixed liquor formed by polyurethane, polyester or acrylate and diluent, curing agent is coated with the surface of substrate layer And dry, to form intermediate layer on the surface of the substrate layer；
2) co-extrusion coating ethylene-acetate ethylene copolymer on the intermediate layer, or olefin copolymer, or maleic anhydride grafting change Property polyolefin copolymer is to form thermoplastic resin layer b；
3) co-extrusion coats modified by maleic acid anhydride graft polyolefin copolymer to form thermoplastic resin on the thermoplastic resin layer b Lipid layer a；
4) sided corona treatment is done to the thermoplastic resin layer a surfaces, finally winding obtains high temperature resistant precoating encapsulating film.
10. Electric radiant Heating Film according to claim 9 precoats the preparation method of encapsulating film with high temperature resistant, it is characterised in that：
The step 1) include：Sided corona treatment is carried out to the inner surface of the substrate layer, makes the surface dynes value of the substrate layer Reach more than 48；It is coated with and is formed by polyurethane or acrylate and curing agent in the ground layer surface Jing Guo sided corona treatment Mixed liquor and drying, drying temperature be 65-95 DEG C；
The step 3) and step 4) in, in addition it is also necessary to ozone processing is carried out to resin bed b, the concentration of ozone is 40%, power 800W, gas flow is 3.5SCXFM.
CN201710171892.5A 2017-03-22 2017-03-22 A kind of Electric radiant Heating Film high temperature resistant precoating encapsulation composite membrane Pending CN106947404A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108582903A (en) * 2018-06-21 2018-09-28 北京康得新功能材料有限公司 A kind of electronic component packaging composite film
CN110577806A (en) * 2019-09-20 2019-12-17 安徽国风塑业股份有限公司 Super-adhesive pre-coating film and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1394797A (en) * 2001-06-26 2003-02-05 住友电木株式会社 Sealing belt for electronic parts
CN201933045U (en) * 2011-01-21 2011-08-17 北京康得新复合材料股份有限公司 Polyester electrothermal heating coating film

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1394797A (en) * 2001-06-26 2003-02-05 住友电木株式会社 Sealing belt for electronic parts
CN201933045U (en) * 2011-01-21 2011-08-17 北京康得新复合材料股份有限公司 Polyester electrothermal heating coating film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108582903A (en) * 2018-06-21 2018-09-28 北京康得新功能材料有限公司 A kind of electronic component packaging composite film
CN110577806A (en) * 2019-09-20 2019-12-17 安徽国风塑业股份有限公司 Super-adhesive pre-coating film and preparation method thereof

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