CN111087938A - Double-sided foam adhesive tape with electromagnetic shielding function - Google Patents
Double-sided foam adhesive tape with electromagnetic shielding function Download PDFInfo
- Publication number
- CN111087938A CN111087938A CN201911237572.0A CN201911237572A CN111087938A CN 111087938 A CN111087938 A CN 111087938A CN 201911237572 A CN201911237572 A CN 201911237572A CN 111087938 A CN111087938 A CN 111087938A
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- Prior art keywords
- layer
- double
- electromagnetic shielding
- shielding function
- sided
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002390 adhesive tape Substances 0.000 title claims abstract description 37
- 239000006260 foam Substances 0.000 title claims abstract description 34
- 239000010410 layer Substances 0.000 claims abstract description 78
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 31
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 31
- 239000012790 adhesive layer Substances 0.000 claims abstract description 24
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 9
- 229920000570 polyether Polymers 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 229920005862 polyol Polymers 0.000 claims abstract description 6
- 150000003077 polyols Chemical class 0.000 claims abstract description 6
- 239000012948 isocyanate Substances 0.000 claims abstract description 5
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 238000007747 plating Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 claims description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 2
- 230000003139 buffering effect Effects 0.000 abstract description 7
- 239000003381 stabilizer Substances 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 3
- 239000004088 foaming agent Substances 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000003086 colorant Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229920002635 polyurethane Polymers 0.000 description 7
- 239000004814 polyurethane Substances 0.000 description 7
- 229920000742 Cotton Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000003851 corona treatment Methods 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- NVSXSBBVEDNGPY-UHFFFAOYSA-N 1,1,1,2,2-pentafluorobutane Chemical compound CCC(F)(F)C(F)(F)F NVSXSBBVEDNGPY-UHFFFAOYSA-N 0.000 description 1
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 1
- FDMFUZHCIRHGRG-UHFFFAOYSA-N 3,3,3-trifluoroprop-1-ene Chemical compound FC(F)(F)C=C FDMFUZHCIRHGRG-UHFFFAOYSA-N 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920002323 Silicone foam Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000013514 silicone foam Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4829—Polyethers containing at least three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/125—Water, e.g. hydrated salts
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
- C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/16—Unsaturated hydrocarbons
- C08J2203/162—Halogenated unsaturated hydrocarbons, e.g. H2C=CF2
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
-
- 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/24—Presence of a foam
- C09J2400/243—Presence of a foam 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/26—Presence of textile or fabric
- C09J2400/263—Presence of textile or fabric 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
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/045—Presence of homo or copolymers of ethene in the release coating
-
- 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
- C09J2433/00—Presence of (meth)acrylic 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
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
A double-sided foam adhesive tape with an electromagnetic shielding function comprises a first adhesive layer, a polyurethane elastomer layer, a polyurethane foam layer, a conductive substrate layer, a second adhesive layer and a release layer which are sequentially arranged from top to bottom; the preparation raw materials of the polyurethane foam layer comprise the following components in percentage by weight: 87-97% of polyether polyol, 1-4% of isocyanate, 0.5-3% of foaming agent, 0.5-3% of catalyst and 0.5-3% of foam stabilizer. The double-sided foam adhesive tape provided by the invention has good buffering and damping performance; meanwhile, the electromagnetic shielding performance is good and the removability is easy.
Description
Technical Field
The invention relates to a double-sided tape, in particular to a double-sided foam adhesive tape with an electromagnetic shielding function.
Background
Under the 5G era, the transmission rate, frequency and signal intensity of communication equipment are greatly changed compared with the prior art, and parts and components are newly changed from a core chip to a radio frequency device and from the body to an internal structure. According to the key capability index of 5G already published by ITU (International telecommunication Union), the main improvement of the comparison with 4G is as follows: compared with 4G, in the aspect of transmission rate, the 5G peak rate is 10-20Gbps, which is increased by 10-20 times, and the user experience rate reaches 0.1Gbps-1Gbps, which is increased by 10-100 times. As the signal transmission density is greatly improved, a scheme for solving the electromagnetic interference in the internal space of a 5G mobile phone (a smart phone of a fifth generation mobile communication system) is also in urgent need of change.
In order to meet new requirements of a 5G mobile phone on light and thin appearance, electromagnetic shielding, shock resistance buffering, convenience in rework and the like, the foam adhesive tape used in the prior art needs to be added with electric conductivity. At present, no foam adhesive tape which has high adhesion, high buffering performance, easy removability, electromagnetic shielding function and low chip falling is available in the market.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the foam adhesive tape which has high adhesion, good buffering property, good removability, strong electromagnetic shielding function and low chip dropping.
The technical scheme adopted by the invention is as follows:
a double-sided foam adhesive tape with an electromagnetic shielding function comprises a first adhesive layer, a polyurethane elastomer layer, a polyurethane foam layer, a conductive substrate layer, a second adhesive layer and a release layer which are sequentially arranged from top to bottom; the preparation raw materials of the polyurethane foam layer comprise the following components in percentage by weight:
further, a metal plating layer is arranged on one surface, close to the second adhesive layer, of the conductive base material layer.
Further, the surface resistance of the metal coating is not more than 0.07 omega/square.
Further, the metal plating layer is a copper and/or nickel plating layer.
Further, the thickness of the polyurethane foam layer is 100-1000 μm, and different thicknesses can be selected to meet different buffering effects.
Further, the surface energy of the upper surface of the polyurethane foam layer is not less than 5.2 x 10-2J/m2。
Further, the release layer is a double-sided release film.
Further, the first adhesive layer and/or the second adhesive layer is an acrylate pressure sensitive adhesive layer.
Further, the polyether polyol is one or more of polyether diol, polyether triol, polytetrahydrofuran diol and ethylene oxide/propylene oxide copolyether.
Further, the isocyanate is one or more of toluene diisocyanate, diphenylmethane p-diisocyanate and xylylene diisocyanate.
Further, the foaming agent is one or more of deionized water, pentafluoropropane, pentafluorobutane and trifluoropropene.
Further, the foam stabilizer is one or more of a silicone foam stabilizer and an organic silicon foam stabilizer.
Further, the catalyst is one or more of dimethylamino ethyl ether, stannous octoate, dibutyl tin dilaurate and triethylene diamine.
Furthermore, the raw materials for preparing the polyurethane cotton layer also comprise a coloring agent, the coloring agent is a dark coloring agent, such as black coloring agent like carbon black, and the dark coloring agent can effectively improve the shading effect.
The invention has the beneficial effects that:
the polyurethane foam layer in the double-sided foam adhesive tape provided by the invention has excellent resilience, and the proportion of the thickness of the polyurethane foam layer in the whole thickness of the adhesive tape is more than 60%, so that the buffering and shock-absorbing requirements are greatly met; meanwhile, the electromagnetic shielding effect is good; when the adhesive tape is removed, the foam is split only by the art designing knife, the foam is subjected to cohesive failure, and the conductive substrate layer and the polyurethane elastomer are respectively arranged on the two surfaces of the adhesive tape as carriers, so that the foam is conveniently and completely removed.
Detailed Description
In order to more fully understand the technical contents of the present invention, the technical solutions of the present invention will be further described and illustrated by the following specific examples.
In the following description, "%" and "part" representing amounts are based on weight unless otherwise specified. Unless otherwise indicated, all numbers expressing feature sizes, quantities, and physical characteristics used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be suitably varied by those skilled in the art in seeking to obtain the desired properties utilizing the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers within that range and any range within that range, for example, 1 to 5 includes 1, 1.2, 1.4, 1.55, 2, 2.75, 3, 3.80, 4, and 5, and the like.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus; the term "preferred" refers to a preferred alternative, but is not limited to only the selected alternative.
The present invention will be further described with reference to the following embodiments.
First adhesive layer/second adhesive layer:
as the adhesive of the first adhesive layer and the second adhesive layer, a general adhesive can be used. However, in order to obtain a high adhesive force, linear acrylate-based or modified acrylate-based pressure-sensitive adhesives are preferred in the present invention. The thicknesses of the first adhesive layer and the second adhesive layer are not particularly limited, and they may be the same or different; their chemical composition and preparation mode can be the same or different.
Meanwhile, in order to improve the shading effect of the adhesive tape, a dark pigment (pigments having no adverse effect on the performance of the adhesive can be used) may be added to the adhesive of the first adhesive layer and/or the second adhesive layer, preferably a black pigment; the addition amount of the pigment can be properly adjusted according to the requirement of the adhesive tape on the light-shielding property so as to be suitable for different use scenes.
A polyurethane foam layer:
the polyurethane foam layer is formed by using polyether polyol, isocyanate and various auxiliaries as main raw materials through a foaming process. In order to make the polyurethane foam layer be better combined with the polyurethane elastomer layer, the upper surface of the polyurethane foam layer can be pretreated, wherein the pretreatment comprises corona treatment and etching treatment, and the surface energy of the upper surface of the polyurethane foam layer is not less than 5.2 multiplied by 10 after the pretreatment-2J/m2。
The thickness of the polyurethane foam layer is preferably more than 60% of the total thickness of the adhesive tape, so that the total thickness of the adhesive tape can be obviously changed by changing the thickness of the polyurethane foam layer, and the adhesive tape can be suitable for use scenes with different thickness requirements. In the embodiment of the present invention, the thickness of the polyurethane foam layer is preferably 100-1000 μm.
Meanwhile, in order to further increase the shading effect of the adhesive tape, the polyurethane cotton layer can be colored in dark color, and a black coloring agent is preferably added; the addition amount of the colorant can be properly adjusted according to the requirement of the adhesive tape on the light-shielding property so as to be suitable for different use scenes.
Polyurethane elastomer layer:
the polyurethane elastomer is prepared by reacting oligomeric polyol, polyisocyanate and a chain extender. The polyurethane elastomer is used for being attached to the polyurethane foam, so that the adhesiveness between the polyurethane foam layer and the first adhesive layer is guaranteed, the adhesive tape is more suitable for a severe storage environment, the polyurethane foam and the polyurethane elastomer are good in compatibility, and chip falling and residual pollution cannot occur in the removing process.
Conductive substrate layer:
the conductive substrate layer comprises a fiber cloth layer and a metal coating, the metal coating is a copper and/or nickel coating, the copper and/or nickel coating is electroplated on one surface of the fiber cloth layer through an electroplating process, and the surface resistance of the metal coating is not more than 0.07 omega/square. The fiber cloth is used as the base material, so that the tensile strength of the adhesive tape is ensured, and the processing difficulty caused by insufficient material strength is avoided; the electroplated copper/nickel layer has the characteristics of oxidation resistance, good conductivity and good shielding effect.
A release layer:
in order to facilitate the winding of the adhesive tape into a roll, the release layer is a double-sided release film. The material of the double-sided release film includes a conventional double-sided release-treated material known for the adhesive, and a siliconized release-treated double-sided PE release film is preferred in the embodiment of the present invention.
The preparation method of the double-sided foam adhesive tape comprises the following steps:
weighing the raw materials for preparing the polyurethane foam layer according to the formula, adding the raw materials into a stirrer, and stirring for 1 minute to obtain an emulsion; placing the emulsion on the surface, which is not provided with the metal coating, of the conductive base material layer, and foaming the emulsion through a foaming process to form a polyurethane foam layer with the thickness of 100-1000 mu m; right it is far away from on the polyurethane foam layer one side of electrically conductive substrate layer carries out corona treatment, makes its surface energy not less than 5.2 x 10-2J/m2(ii) a Coating a commercially available acrylate pressure-sensitive adhesive, namely, an azochemical Y-1420, on one surface of the release layer by using a comma shaft to form a second adhesive layer, and attaching the second adhesive layer to one surface, provided with the metal coating, of the conductive base material layer; attaching the polyurethane elastomer layer to one surface of the polyurethane cotton layer which is subjected to corona treatment, and placing the polyurethane elastomer layer at the temperature of 60 ℃ for 12-16 hours to ensure that the polyurethane elastomer layer and the polyurethane cotton layer are fully contacted and transferred; the first adhesive layer is adhered to the polyurethane elastomer layer, and then the polyurethane elastomer layer is rolled and cured to obtain the polyurethane elastomerDouble-sided foam tape.
Table 1-raw material formulation for preparing polyurethane foam layer in each example:
| example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| Polyether polyols | 87％ | 97％ | 90％ | 92％ | 94％ | 95％ |
| Isocyanates | 4％ | 1％ | 2％ | 3％ | 1.5％ | 1.5％ |
| Foaming agent | 3％ | 0.5％ | 2％ | 1％ | 1％ | 1％ |
| Foam homogenizing agent | 3％ | 0.5％ | 1％ | 1％ | 1.5％ | 1％ |
| Catalyst and process for preparing same | 3％ | 0.5％ | 1％ | 1％ | 1％ | 1％ |
| Coloring agent | 0 | 0.5％ | 4％ | 2％ | 1％ | 0.5％ |
Table 2-thickness (μm) of each layer in each example:
and (3) performance testing:
removing performance test method: cutting 10mm by 150mm of adhesive tape, preparing 35mm by 150mm by 2mm of ABS plate and glass plate, pasting one surface of the double-sided adhesive tape on the ABS plate, and pasting the other surface on the glass plate, and ensuring that the adhesive tape is flat, bubble-free and wrinkle-free after being pasted. Pressing the 2kg steel bars on the adhered object (ABS plate-double-sided tape-glass plate) for standing for 30min, cutting the foam part with a cutter, observing the degree of scrap falling of the foam section, respectively tearing off the tapes on the two plates, and observing whether the residual adhesive is broken or not and whether the residual adhesive is broken or not in the removing process.
The electromagnetic shielding performance test method comprises the following steps: cutting an adhesive tape with an area of 25mm by 25mm, attaching one surface of the adhesive tape to a copper sheet, placing the adhesive tape on a test board of a resistance tester, aligning the other surface of the adhesive tape to an upper communication surface, starting equipment and reading, wherein if the adhesive tape does not have conductivity, a loop cannot be formed, and a value cannot be read; the resistance tester is a Changzhou constant ampere innovative electronic HC2512B model, and the testing range is 1 mu omega-20 k omega.
The resilience performance test method comprises the following steps: cutting 100 mm/100 mm adhesive tape, placing the test piece between the upper and lower compression plates of the tester, compressing for 25%, standing for 20 s, and reading in unit kgf/cm2And the foam compression stress tester is used as a crown measuring instrument PMYX-2000, and the measurable measuring range of the coefficient of restitution is as follows: 25 to 80 percent.
Table 3-results of performance testing of the examples:
wherein comparative example 1 differs from example 6 only in that there is no polyurethane foam layer in the comparative example.
According to the invention, the fiber cloth is selected for electroplating to form the conductive substrate layer, so that the tensile strength is ensured, the processing difficulty caused by insufficient material strength is avoided, and meanwhile, the electroplated layer copper/nickel has the characteristics of oxidation resistance, good conductivity and good shielding effect; the polyurethane foam layer has high density and fine and uniform cell structure, and the double-sided foam adhesive tape has the characteristics of excellent compression deformation resistance, high sealing property, high buffering property, high energy absorptivity, low pollution, high dimensional stability, high processing efficiency, low pollution and environmental protection; the polyurethane elastomer is attached to the polyurethane foam, so that the adhesiveness is ensured, the foam adhesive tape is more suitable for a severe storage environment, the polyurethane foam and the polyurethane elastomer have good compatibility, and the chip falling phenomenon and residual pollution cannot occur in the removing process; the foamed polyurethane cotton layer is of a medium-soft type, and the polyurethane cotton layer is slightly split by an art designer knife during reworking, and then the double-sided adhesive tape is removed, so that the operation is simple.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Claims (10)
1. A double-sided foam adhesive tape with an electromagnetic shielding function is characterized by comprising a first adhesive layer, a polyurethane elastomer layer, a polyurethane foam layer, a conductive substrate layer, a second adhesive layer and a release layer which are sequentially arranged from top to bottom; the preparation raw materials of the polyurethane foam layer comprise the following components in percentage by weight:
2. the double-sided foam tape with the electromagnetic shielding function according to claim 1, wherein a metal plating layer is provided on a surface of the conductive substrate layer adjacent to the second adhesive layer.
3. The double-sided foam tape with the electromagnetic shielding function as claimed in claim 2, wherein the surface resistance of the metal plating layer is not more than 0.07 Ω/square.
4. The double-sided foam tape with the electromagnetic shielding function according to claim 3, wherein the metal plating layer is a copper plating layer and/or a nickel plating layer.
5. The double-sided foam tape with the electromagnetic shielding function as claimed in claim 1, wherein the thickness of the polyurethane foam layer is 100-1000 μm.
6. The double-sided foam tape with electromagnetic shielding function according to claim 1 or 4, wherein the surface energy of the upper surface of the polyurethane foam layer is not less than 5.2 x 10-2J/m2。
7. The double-sided foam tape with the electromagnetic shielding function according to claim 1, wherein the release layer is a double-sided release film.
8. The double-sided foam tape with the electromagnetic shielding function according to claim 1, wherein the first adhesive layer and/or the second adhesive layer is an acrylate pressure-sensitive adhesive layer.
9. The double-sided foam tape with electromagnetic shielding function according to claim 1, wherein the polyether polyol is one or more of polyether glycol, polyether triol, polytetrahydrofuran glycol, and ethylene oxide/propylene oxide copolyether.
10. The double-sided foam tape with the electromagnetic shielding function according to claim 1, wherein the isocyanate is one or more of toluene diisocyanate, diphenylmethane-p-diisocyanate, and xylylene diisocyanate.
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| CN112143403A (en) * | 2020-10-13 | 2020-12-29 | 衡山县佳诚新材料有限公司 | Adhesive tape with function of buffering electromagnetic wave radiation prevention and manufacturing method thereof |
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