WO2020002511A1 - Zusammensetzung zur abschirmung elektromagnetischer strahlung - Google Patents
Zusammensetzung zur abschirmung elektromagnetischer strahlung Download PDFInfo
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- WO2020002511A1 WO2020002511A1 PCT/EP2019/067174 EP2019067174W WO2020002511A1 WO 2020002511 A1 WO2020002511 A1 WO 2020002511A1 EP 2019067174 W EP2019067174 W EP 2019067174W WO 2020002511 A1 WO2020002511 A1 WO 2020002511A1
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- electromagnetic radiation
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
-
- 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
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/02—Aliphatic polycarbonates
- C08G64/0208—Aliphatic polycarbonates saturated
- C08G64/0225—Aliphatic polycarbonates saturated containing atoms other than carbon, hydrogen or oxygen
- C08G64/0241—Aliphatic polycarbonates saturated containing atoms other than carbon, hydrogen or oxygen containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
Definitions
- the present invention relates to a composition for shielding electromagnetic radiation, which comprises at least one conductive filler and a polymer matrix, a method for producing such a composition for shielding electromagnetic radiation
- Electromagnetic waves have an electrical and a magnetic field component.
- the waves emitted by electronic components can have a mutual electromagnetic influence
- EMI electromagnetic interference
- Electromagnetic compatibility of the individual components B. in electric vehicles, electric drives with high performance integrated in a confined space and controlled by electronic components, whereby the individual components must not interfere with each other. In order to achieve electromagnetic compatibility, it is known
- EMC electromagnetic compatibility
- electromagnetic interference is the effect of electromagnetic waves on circuits, devices, systems or
- the frequency range relevant for EMI shielding is generally between 100 Hz and 100 GHz.
- the attenuation achieved by shielding an incident electromagnetic wave is generally composed of a reflection and an absorption. When absorbed, the electromagnetic wave loses energy that is in
- Frequency range independent of the material thickness and can occur on the front as well as on the back and within the material.
- the electrical conductivity behavior of the materials can generally be used to assess the shielding.
- the relative permeability can be used to assess the shielding, and the reflection and also the vibration absorption in the upper frequency range.
- Shielding to use plastic composites compositions (composites, compounds) that have a matrix of at least one polymer component and at least one filler with shielding properties. These can take the form of coatings, insulating tapes, moldings, etc.
- electrically conductive fillers can be dispersed in a matrix of at least one non-conductive polymer.
- WO 2013/021039 relates to a microwave absorbing
- composition containing dispersed magnetic nanoparticles in a polymer matrix contains a highly branched nitrogen-containing polymer, specifically a polyurethane based on a hyperbranched melamine with polyol functionality is used.
- No. 5,696,196 describes a conductive coating comprising: a) between 7.0 and 65.0% by weight of an aqueous thermoplastic
- conductive metal particles selected from Cu, Ag, Ni, Au and mixtures thereof,
- the aqueous urethane dispersion can be aliphatic or aromatic, which can also be a polyurethane.
- Information on specific di- or polyisocyanates and thus reactive compounds are given in the
- Neorez R-966 and Bayhydrol LS-2033 both aqueous emulsions of an aliphatic urethane, are used.
- US 2007/0056769 A1 describes a polymer composite material for shielding electromagnetic radiation, which comprises a non-conductive polymer, an inherently conductive polymer and an electrically conductive filler.
- a non-conductive polymer is elastomeric, thermoplastic and thermosetting polymers, which can be selected from a large number of different polymer classes, polyurethane, among others, being mentioned quite generally. Specific connections for the production of polyurethanes are not mentioned. In the examples according to the invention, only a polystyrene / polyaniline blend filled with nickel-coated carbon fibers is used.
- KR 100901250 relates to a polyurethane composition containing
- Zinc dioxide which is suitable for shielding against UV radiation.
- This material is used e.g. B. for sealing containers such as water tanks.
- Zhq2 makes it possible to do without organic light stabilizers and also has an antibacterial effect.
- the composition of this document aims to protect materials from UV radiation.
- Composition is not disclosed.
- KR 1020180047410 describes a composition for
- electromagnetic interference shield that contains conductive and non-conductive fillers.
- urea resins are mentioned in general as a possible polymer matrix. Specifically in the embodiment
- Polysiloxane used as a polymer matrix used as a polymer matrix.
- Composition is not disclosed.
- Polymer matrices are usually only loaded with a low solids content, so that limited shielding properties result.
- the compositions known hitherto either reflect only the electromagnetic radiation or the proportion of reflection to absorption is very high and cannot be controlled.
- Polymer matrices also need improvement with regard to heat and aging resistance. Especially in the automotive sector, be it a
- compositions for shielding electromagnetic radiation which can be filled with higher solids contents than are known from the prior art and which are compatible with many different fillers. Furthermore, the provided
- compositions for shielding electromagnetic radiation by good heat resistance and good aging resistance even at elevated temperatures Surprisingly, it was found that this object is achieved by the composition and its use according to the invention and by the method according to the invention for its preparation.
- Heat resistance and good aging resistance can be achieved even at elevated temperatures.
- composition has good adhesion to a variety of plastics, making it reliable and economical
- pretreatment can be omitted.
- a first object of the invention is a composition for
- Shielding of electromagnetic radiation comprising a) at least one conductive filler and b) a polymer matrix containing at least one polyurethane containing urea groups.
- Another object of the invention is an invention
- composition in the form of a two-component (2K) polyurethane composition. This can be formulated in water or water-free.
- Another object of the invention is a method for producing a composition according to the invention, comprising the steps: a) providing at least one conductive filler and b) mixing the at least one conductive filler with the
- the invention further relates to a method for producing a substrate shielded from electromagnetic radiation, comprising one or consisting of a composition according to the invention, in which one provides such a composition, and i) from the composition for shielding electromagnetic
- Radiation forms the substrate, or ii) in a substrate the composition for shielding
- Another object of the invention is the use of a
- inventive composition for shielding electromagnetic radiation is provided.
- the frequency range is generally in a range from approximately 100 Hz to 100 GHz.
- the waveband used for shielding is generally in a range from approximately 100 Hz to 100 GHz.
- compositions according to the invention are well suited for this.
- the compositions according to the invention are also particularly suitable for shielding low and medium frequencies. So you can as Filler e.g. B. use a material for absorbing electromagnetic waves with a low frequency, such as a magnetic material.
- a filler can also be a material for reflecting electromagnetic waves at a high frequency, e.g. B. a
- Suitable combinations of fillers can be used in broadband applications.
- shielding effectiveness can be achieved with the composition of the urea group-containing polyurethanes with a large number of different fillers suitable for EMI shielding and the high degree of filling that can be achieved.
- the shielding attenuation is made up of components for absorption SEA, reflection SER and multi-reflection SEM. Due to the high flexibility of the composition according to the invention with regard to the type and amount of the conductive fillers contained and the possibility of using further polymer components, especially also conductive polymers, the desired proportion of absorption and reflection in the shielding attenuation can be easily controlled. So fulfill
- composition according to the invention comprises at least one conductive filler as component a).
- Materials or fibers are present. These include powders, nanoparticulate materials, nanotubes, fibers, etc.
- the fillers can be coated as well as uncoated or applied to a carrier material.
- the at least one conductive filler is preferably selected from
- Preferred metal-coated supports are metal-coated
- Carbon fibers especially nickel-plated carbon fibers and silver-plated carbon fibers.
- Preferred metal-coated supports are also silver-coated
- Suitable elemental metals are selected from cobalt, aluminum,
- Suitable alloys are selected from strontium ferrite, silver-copper alloy, silver-aluminum alloy, iron-nickel alloy, m-metals, amorphous metals (metallic glasses) and mixtures thereof.
- the conductive filler comprises at least one ferromagnetic material, preferably selected from iron, cobalt, Nickel, oxides and mixed oxides thereof, alloys and mixtures thereof. These fillers are especially suitable for absorbing electromagnetic waves with a low frequency.
- the conductive filler comprises at least one carbon-rich, conductive material, preferably selected from carbon nanotubes, carbon fibers, graphite, graphene, conductive carbon black and mixtures thereof. These fillers are particularly suitable for reflecting and absorbing high-frequency electromagnetic waves.
- the filler is usually in a sufficient proportion in the
- Contain polymer matrix to achieve the desired electrical conductivity for the intended application.
- Usual amounts of the conductive filler are e.g. B. in a range of 0.1 to 95 wt .-%, based on the total weight of components a) and b).
- the proportion of filler a) is preferably 0.5 to 95% by weight, particularly preferably 1 to 90% by weight, based on the total weight of components a) and b).
- composition according to the invention comprises as component b) a polymer matrix containing
- At least one polyurethane containing urea groups at least one polyurethane containing urea groups.
- composition according to the invention preferably contains 15 to 99.5% by weight, particularly preferably 20 to 99% by weight, at least one
- the polymer matrix b) consists exclusively of at least one polyurethane containing urea groups.
- Polyurethanes containing urea groups contain at least one polymerized amine component which has at least two amine groups which are reactive toward NCO groups.
- the proportion of the amine component is preferably 0.01 to 32 mol%, particularly preferably 0.1 to 10 mol%, based on the components used to produce the polyurethane containing urea groups.
- urea groups are included
- Polyurethanes composed of polyisocyanates and thus complementary compounds with at least two groups reactive towards NCO groups.
- NCO groups with amino groups leads to the formation of urea groups.
- the reaction of NCO groups with OH groups leads to the formation of urethane groups.
- Compounds that contain only one reactive group per molecule break the polymer chain and can be used as regulators.
- Containing molecules lead to the formation of linear urea-containing polyurethanes.
- Compounds with more than two reactive groups per molecule lead to the formation of branched polyurethanes containing urea groups.
- the polyurethane containing urea groups is preferably of low branching or of linear structure.
- the one containing urea groups is particularly preferred
- Polyurethane built up linearly I.e. the polyurethane containing urea groups is composed of diisocyanates and thus complementary divalent compounds.
- the degree of branching of the urea group-containing polyurethane is preferably 0 to 20%.
- the degree of branching denotes the proportion Nodes in the polymer chain, ie the proportion of atoms that
- Crosslinking is accordingly understood to mean that a branching polymer chain opens into a second branching polymer chain.
- Linear polyurethane containing urea groups in the context of the invention are polyurethane containing urea groups which have a degree of branching of 0%.
- Low-branched polyurethanes containing urea groups preferably have a degree of branching of 0.01 to 20%, in particular of 0.01 to 15%.
- Groups reactive towards NCO groups preferably have at least one active hydrogen atom.
- Suitable complementary compounds are low-molecular di- and polyols, polymeric polyols, low-molecular di- and polyamines with primary and / or secondary amino groups, polymeric polyamines, amine-terminated polyoxyalkylene polyols, compounds with at least one hydroxyl group and at least one primary or secondary amino group in the molecule, in particular amino alcohols.
- diols low molecular weight diols
- polyols low molecular weight polyols
- Suitable diols are, for example
- Diethylene glycol triethylene glycol, dipropylene glycol, tripropylene glycol.
- Suitable polyols are compounds with at least three OH groups, e.g. B. glycerol, trimethylolmethane, trimethylolethane, trimethylolpropane, 1, 2,4-butanetriol, tris (hydroxymethyl) amine, tris (hydroxyethyl) amine,
- Di pentaerythritol
- di-tri- or oligoglycerols or sugars such as e.g. B. glucose, tri- or higher functional polyether based on tri- or higher functional alcohols and ethylene oxide, propylene oxide or butylene oxide, or polyester.
- sugars such as e.g. B. glucose, tri- or higher functional polyether based on tri- or higher functional alcohols and ethylene oxide, propylene oxide or butylene oxide, or polyester.
- glycerol trimethylolethane, trimethylolpropane, 1, 2,4-butanetriol, pentaerythritol, and their polyether based on ethylene oxide or
- Propylene oxide is particularly preferred. Since these compounds lead to branching, they are preferably used in an amount of at most 5% by weight, in particular at most 1% by weight, based on the total weight of the compounds which are complementary to the isocyanates. No polyols are used in particular.
- Suitable polymeric diols and polymeric polyols preferably have a molecular weight of 500 to 5000 g / mol.
- the polymeric diols are preferably selected from polyether diols, polyester diols, polyether ester diols and polycarbonate diols.
- the polymeric diols and polyols containing ester groups can be used instead of or in addition to cabonic ester groups
- Preferred polyether diols are polyethylene glycols H0 (CH2CH20) nH,
- Polytetramethylene glycols polytetrahydrofurans
- poly-1, 3-propanediols or mixtures of two or more representatives of the above compounds.
- One or both of the hydroxyl groups in the diols mentioned above can be substituted by SH groups.
- Preferred polyester diols are those which are obtained by reacting dihydric alcohols with dihydric carboxylic acids. Instead of the free polycarboxylic acids, the corresponding polycarboxylic anhydrides or corresponding polycarboxylic esters of lower alcohols or their mixtures can also be used to prepare the polyester diols.
- Polycarboxylic acids can be aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic and optionally, e.g. B. by
- Halogen atoms substituted and / or unsaturated. Examples include: suberic acid, azelaic acid, phthalic acid, isophthalic acid,
- Phthalic anhydride tetrahydrophthalic anhydride
- dicarboxylic acids of the general formula HOOC- (CH2) y -COOH, where y is a number from 1 to 20, preferably an even number from 2 to 20, e.g. B.
- polyhydric alcohols such as polyhydric alcohols such.
- B ethylene glycol, propane-1, 2-diol, propane-1, 3-diol, butane-1, 3-diol, butene-1, 4-diol, butyne-1, 4-diol, pentane-1, 5- diol, neopentyl glycol, bis (hydroxymethyl) cyclohexanes such as 1,4-bis (hydroxymethyl) cyclohexane, 2-methyl-propane-1,3-diol, methylpentanediols, furthermore diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, dipropylene glycol, polypropylene glycol, dibutylene glycol and polybutylene glycol.
- Alcohols of the general formula HO- (CH2) x-OH are preferred, where x is a number from 1 to 20, preferably an even number from 2 to 20.
- Examples include ethylene glycol, butane-1, 4-diol, hexane-1, 6-diol, octane-1, 8-diol and dodecane-1, 12-diol. Neopentyl glycol is also preferred.
- Suitable polyether diols are in particular by polymerization of
- reactive hydrogen atoms such as alcohols or amines, e.g. B. water, ethylene glycol, propane-1, 2-diol, propane-1, 3-diol, 2,2-bis (4-hydroxyphenyl) propane or aniline available.
- a particularly preferred polyether diol is polytetrahydrofuran.
- Polytetrahydrofurans can by cationic polymerization of
- Polycarbonate diols such as those used for. B. by reacting phosgene with an excess of as structural components for the
- polyester polyols Low molecular weight alcohols called polyester polyols can be obtained.
- polyester diols based on lactone can also be used, these being fluoropolymers or copolymers of lactones, preferably addition products of lactones with terminal hydroxyl groups onto suitable difunctional starter molecules.
- lactones preferred are those which are derived from compounds of the general formula HO- (CH2) z -COOH, where z is a number from 1 to 20 and an H atom of a methylene unit can also be substituted by a C 1 -C 4 -alkyl radical can. Examples are e-caprolactone, b-propiolactone, g-butyrolactone and / or methyl-g-caprolactone and mixtures thereof.
- Suitable starter components are e.g. B.
- polyester polyols low molecular weight dihydric alcohols.
- corresponding polymers of e-caprolactone are particularly preferred.
- Lower polyester diols or polyether diols can also be used as starters
- Suitable low molecular weight di- and polyamines with primary and / or secondary amino groups have a molecular weight of 32 to less than 500 g / mol.
- Diamines which contain two amino groups selected from the group of the primary and secondary amino groups are preferred.
- Suitable aliphatic and cycloaliphatic diamines are, for example, ethylenediamine, N-alkyl-ethylenediamine, propylenediamine, 2,2-dimethyl-1,3-propylenediamine, N-alkylpropylenediamine, butylenediamine, N-alkylbutylenediamine, pentanediamine, hexamethylenediamine, N alkylhexamethylenediamine
- Low molecular weight aromatic di- and polyamines can also be used to prepare the compositions according to the invention.
- Aromatic diamines are preferably selected from bis (4-aminophenyl) methane, 3-methylbenzidine, 2,2-bis (4-aminophenyl) propane, 1,1-bis (4-aminophenyl) cyclohexane, 1, 2-diaminobenzene, 1, 4-diaminobenzene, 1, 4-diaminonaphthalene, 1, 5-diaminonaphthalene, 1, 3-diaminotoluene, m-xylylenediamine, N, N'-dimethyl-4,4'-biphenyl-diamine, Bis (4-methylaminophenyl) methane, 2,2-bis (4-methylaminophenyl) propane, or mixtures thereof.
- Low molecular weight di- and polyamines used in compositions have a proportion of aromatic di- and polyamines in all di- and polyamines of at most 50 mol%, particularly preferably at most 30 mol%, especially at most 10 mol%.
- the proportion of aromatic di- and polyamines in all di- and polyamines of at most 50 mol%, particularly preferably at most 30 mol%, especially at most 10 mol%.
- compositions according to the invention used low-molecular di- and polyamines no aromatic di- and polyamines.
- Aromatic di- and polyamines are used according to the two-component (2K) polyurethanes according to the invention. Then the proportion of aromatic di- and polyamines in all di- and polyamines is at most 50 mol%, particularly preferably at most 30 mol%, especially at most 10 mol%.
- Suitable polymeric polyamines preferably have a molecular weight of 500 to 5000 g / mol.
- These include polyethyleneimines and amine-terminated polyoxyalkylene polyols, such as a, w-diaminopolyethers, which can be prepared by amination of polyalkylene oxides with ammonia.
- Special amine-terminated Polyoxyalkylene polyols are so-called Jeffamines or amine-terminated polytetramethylene glycols.
- Suitable compounds with at least one hydroxyl group and at least one primary or secondary amino group in the molecule are dialkanolamines, such as diethanolamine, dipropanolamine, diisopropanolamine, 2-amino-1, 3-propanediol, 3-amino-1, 2-propanediol, 2-amino -1, 3-propanediol, dibutanolamine, diisobutanolamine, bis (2-hydroxy-1-butyl) amine, bis (2-hydroxy-1-propyl) amine and dicyclohexanolamine.
- dialkanolamines such as diethanolamine, dipropanolamine, diisopropanolamine, 2-amino-1, 3-propanediol, 3-amino-1, 2-propanediol, 2-amino -1, 3-propanediol, dibutanolamine, diisobutanolamine, bis (2-hydroxy-1-butyl)
- the urea group-containing polyurethane contains at least one amine component-containing polymer containing at least two amine groups which are reactive toward NCO groups. This leads to the formation of urea groups during polyaddition.
- the urea group-containing polyurethane contains at least one diamine component polymerized.
- the polymerized diamine component is preferably selected from ethylene diamine, 1,3-propylene diamine, 1,4-tetramethylene diamine, 1,5-pentamethyl diamine, 1,6-hexamethylene diamine, 2-methyl pentamethylene diamine, 1,7-heptamethylene diamine 1,8, octamethylene diamine, 1,1.
- Polyfunctional isocyanates are compounds with two or more (e.g. 3, 4,
- the polyisocyanate is generally selected from di- and polyfunctional isocyanates, the allophanates, isocyanurates, uretdiones or carbodiimides of difunctional isocyanates and mixtures thereof.
- the polyisocyanate preferably contains at least one difunctional isocyanate. In particular, only difunctional isocyanates (diisocyanates) are used.
- Suitable polyisocyanates are generally all aliphatic and
- aromatic isocyanates provided they have at least two reactive ones
- aliphatic diisocyanates also includes cycloaliphatic (alicyclic)
- the urea group-containing polyurethane contains aliphatic polyisocyanates, it being possible for the aliphatic polyisocyanate to be replaced by at least one aromatic polyisocyanate up to 80% by weight, preferably up to 60% by weight, based on the total weight of the polyisocyanates. In a special embodiment, the urea group-containing polyurethane contains only aliphatic polyisocyanates, it being possible for the aliphatic polyisocyanate to be replaced by at least one aromatic polyisocyanate up to 80% by weight, preferably up to 60% by weight, based on the total weight of the polyisocyanates. In a special embodiment, the urea group-containing polyurethane contains only aliphatic
- the polyisocyanate component preferably has an average content of 2 to 4 NCO groups.
- Suitable polyisocyanates are selected from compounds with 2 to 5 isocyanate groups, isocyanate prepolymers with an average number of 2 to 5 isocyanate groups and mixtures thereof. These include, for example, aliphatic, cycloaliphatic and aromatic di, tri and higher
- the polyurethane containing urea groups preferably contains at least one aliphatic polyisocyanate incorporated.
- Suitable aliphatic polyisocyanates are selected from ethylene diisocyanate, propylene diisocyanate,
- the aromatic polyisocyanate is preferably selected from 1,3-phenylene diisocyanate, 1,4-phenylene diisocyanate, 2,4- and 2,6-tolylene diisocyanate and their isomer mixtures, 1,5-naphthylene diisocyanate, 2,4'- and 4,4'- Diphenylmethane diisocyanate, hydrogenated 4,4'-diphenylmethane diisocyanate (H12MDI), xylylene diisocyanate (XDI),
- TXDI Tetramethylxylene diisocyanate
- 4,4'-dibenzyl diisocyanate 4,4'- Diphenyldimethylmethane diisocyanate, di- and
- Tetraalkyldiphenylmethane diisocyanates ortho-tolydine diisocyanate (TODI) and mixtures thereof.
- the urea-containing polyurethane contains at least one polyisocyanate with a uretdione, isocyanurate, urethane, allophanate, biuret, iminooxadiazinedione and / or oxadiazinetrione structure.
- the urea group-containing polyurethane contains at least one aliphatic polyisocyanate with uretdione,
- polyisocyanates or polyisocyanate mixtures with exclusively aliphatic and / or cycloaliphatic bonds
- the polyurethane containing urea groups particularly preferably contains at least one aliphatic diisocyanate, which is selected from hexamethylene diisocyanate, isophorone diisocyanate and mixtures thereof. In a preferred embodiment, it contains urea groups
- Polyurethane composed of aliphatic polyisocyanates and thus complementary aliphatic compounds with at least two groups reactive towards NCO groups, it being possible for the aliphatic polyisocyanate to be replaced by at least one aromatic polyisocyanate, based on the total weight of the polyisocyanates.
- aliphatic polyisocyanate up to 30% by weight, based on the total weight of the polyisocyanates, can be replaced by at least one aromatic polyisocyanate.
- Polyurethane constructed from aliphatic polyisocyanates and thus complementary aliphatic compounds with at least two groups reactive towards NCO groups.
- Polyurethane used a diamine modified polycarbonate ester polyether polyurethane.
- the polymer matrix b) additionally contains at least one conductive polymer which is different from the polyurethane containing urea groups.
- Suitable conductive polymers generally have a conductivity of at least 1 x 10 3 S rrr 1 at 25 ° C, preferably at least 2 x 10 3 S rrr 1 at 25 ° C.
- Suitable conductive polymers are selected from polyanilines,
- Polypyrroles polythiophenes, polyethylenedioxythiophenes (PEDOT), poly (p-phenylene-vinylenes), polyacetylenes, polydiacetylenes, polyphenylene sulfides (PPS), polyperinaphthalenes (PPN), polyphthalocyanines (PPhc), sulfonated polystyrene and polymer mixtures, derivative fiber copolymers, carbon fiber derivatives.
- PEDOT polyethylenedioxythiophenes
- PPS polyphenylene sulfides
- PPN polyperinaphthalenes
- PPhc polyphthalocyanines
- the proportion by weight of the at least conductive polymer is preferably 0 to 10% by weight, such as 0.1 to 5% by weight, based on the total weight of component b).
- the polymer matrix b) additionally contains at least one nonconductive matrix polymer different from the urea group-containing polyurethane.
- Polyketones for example aliphatic polyether ketones or aromatic polyether ketones, polyimides (PI), polyetherimides, polyethylene terephthalates (PET), polybutylene terephthalates (PBT),
- PEK polyether ketones
- PI polyimides
- PET polyethylene terephthalates
- PBT polybutylene terephthalates
- Fluoropolymers polyesters, polyacetals, e.g. Polyoxymethylene (POM), liquid crystal polymers, polyether sulfones (PES), epoxy resins (EP), phenolic resins, chlorosulfonates, polybutadienes, polybutylene, polyneoprenes, polynitriles, polyisoprenes, natural rubbers, copolymer rubbers such as styrene-isoprene-styrene-styrene-styrene (SIS) (SIS) SBS), ethylene-propylene (EPR), ethylene-propylene-diene rubber (EPDM), styrene-butadiene rubber (SBR) and their copolymers and mixtures (blends) thereof.
- POM Polyoxymethylene
- PES polyether sulfones
- EP epoxy resins
- phenolic resins chlorosulfonates
- polybutadienes polybutylene
- Preferred aliphatic and aromatic polyether ketones are aliphatic polyether ether ketones or aromatic polyether ether ketones (PEEK).
- PEEK aromatic polyether ether ketones
- a special version are aromatic polyether ether ketones.
- the proportion by weight of the at least one non-conductive polyurethane different from the urea group-containing polyurethane is preferred
- Matrix polymer 0 to 20 wt .-%, preferably 0 to 15 wt .-%, based on the total weight of component b). If such a non-conductive matrix polymer is present, then in an amount of at least 0.1, preferably at least 0.5% by weight, based on the total weight of component b).
- the conductive polymer and the non-conductive polymer can with
- Filler particles are mixed into a mixture of the components during the polymerization of the matrix polymer (sol-gel method). Homogeneous and heterogeneous blends are possible. There are no macrophases in a homogeneous blend, whereas macrophases are present in a heterogeneous blend.
- the invention contains
- Polyurethane b2) 0 to 20 wt .-%, at least one different from b1) not
- conductive matrix polymer b3) 0 to 10% by weight, at least one conductive polymer, c) optionally at least one additive, each additive being present in an amount of 0 to 3% by weight, optionally water, per 100% by weight % added.
- Suitable additives c) are selected from antioxidants,
- Heat stabilizers flame retardants, light stabilizers (UV stabilizers, UV absorbers or UV blockers), catalysts for the
- Nonionic surfactants can be used as surface-active agents.
- a preferred embodiment is alkoxylated alcohols.
- Preferred alkoxylated alcohols are ethoxylated alcohols with preferably 6 to 20 C Atoms in the alkyl radical and an average of 1 to 150 mol, preferably 2 to 100 mol, in particular 2 to 50 mol, of ethylene oxide (EO) per mol of alcohol.
- the alcohol residue can be linear or branched, preferably linear.
- Preferred branched alcohol residues are methyl-branched residues in the 2-position, as they are
- the ethoxylated alcohols are preferably selected from:
- Ci2Ci4 alcohols with 2 to 150 EO Ci2Ci4 alcohols with 2 to 150 EO
- Ci3-oxo alcohols with 2 to 150 EO Ci3-oxo alcohols with 2 to 150 EO
- Ci3Ci5 alcohols with 2 to 150 EO Ci3Ci5 alcohols with 2 to 150 EO
- Ci2Ci8 alcohols with 2 to 150 EO Ci2Ci8 alcohols with 2 to 150 EO
- the ethoxylated alcohol is a Ci3-oxo alcohol with 2 to 50 mol EO, in particular 2 to 15 mol EO per mol alcohol.
- Suitable surface-active agents are fatty alcohols with 1 to 150 EO, preferably 2 to 100 moles, ethylene oxide (EO) per mole of alcohol. Further suitable surface-active agents are also alkoxylated alcohols which contain ethylene oxide (EO) and at least one further alkylene oxide incorporated. These include propylene oxide (PO) and
- Polyetheroies can also be used as surface-active agents. Suitable polyetheroies can be linear or branched, preferably linear. Suitable polyetheries generally have a number average
- Suitable polyether oils are polyalkylene glycols, such as
- Polyethylene glycols polypropylene glycols, polytetrahydrofurans and
- Alkylene oxide Suitable alkylene oxides for the production of
- Alkylene oxide copolymers are e.g. B. ethylene oxide, propylene oxide, 1, 2- and 2,3-butylene oxide. Copolymers of ethylene oxide and propylene oxide, copolymers of ethylene oxide and butylene oxide and, for example, are suitable
- butylene oxide is polytetrahydrofuran homo- and copolymers.
- the alkylene oxide copolymers can contain the alkylene oxide units randomly distributed or copolymerized in the form of blocks.
- Ethylene oxide homopolymers and ethylene oxide / propylene oxide copolymers are suitable.
- composition as component d) may contain at least one filler and reinforcing material different from components a) to c).
- the invention is broadly understood and includes particulate fillers, fibrous materials and any transition forms.
- Particulate fillers can have a wide range of particle sizes, ranging from dusty to coarse-grained particles.
- Organic or inorganic fillers and reinforcing materials can be used as filler.
- inorganic fillers such as carbon fibers, kaolin, chalk, wollastonite, talc, calcium carbonate, silicates, titanium dioxide, zinc oxide, glass particles, e.g. B. glass balls, nanoscale layered silicates, nanoscale aluminum oxide (AI2O3), nanoscale Titanium dioxide (T1O2), layered silicates and nanoscale silicon dioxide (S1O2) can be used.
- the fillers can also be surface-treated.
- Suitable layered silicates are kaolins, serpentines, talc, mica,
- the layered silicates can be surface-treated or untreated.
- one or more fiber materials can be used. These are preferably selected from known inorganic ones
- Reinforcing fibers such as boron fibers, glass fibers, silica fibers,
- Ceramic fibers and basalt fibers such as
- Aramid fibers polyester fibers, nylon fibers and polyethylene fibers and
- Natural fibers such as flolz fibers, flax fibers, flange fibers and sisal fibers.
- component d) is preferably used in an amount of 1 to 80% by weight, based on the total amount of components a) to d).
- composition according to the invention can be present as a foam.
- a foam in the sense of the invention is a porous, at least partially open-line structure with cells communicating with one another.
- Prepolymerization of at least part of it, mixed, foamed and cured is preferably carried out by chemical
- the foaming can basically take place through the carbon dioxide formed in the reaction of the isocyanate groups with water
- blowing agents from the class of hydrocarbons such as C3-C6 alkanes, for example n-butane, sec-butane, isobutane, n-pentane, isopentane, cyclopentane, hexanes, etc. or halogenated hydrocarbons such as dichloromethane,
- Dichloromonofluoromethane chlorodifluoroethane, 1,1-dichloro-2,2,2-trifluoroethane, 2,2-dichloro-2-fluoroethane, especially chlorine-free fluorocarbons such as difluoromethane, trifluoromethane, difluoroethane, 1, 1, 1, 2-tetrafluoroethane, 1, 1, 2,2-tetrafluoroethane, 1, 1, 1, 3,3-pentafluoropropane, 1, 1, 1, 3,3,3-hexafluoropropane,
- 1, 1, 1, 1, 3,3-pentafluorobutane, heptafluoropropane or sulfur hexafluoride can be used. Mixtures of these blowing agents are also possible.
- the subsequent curing is typically carried out at a temperature of about 10 to 80 ° C, especially 15 to 60 ° C, especially at room temperature. After curing, any residual moisture that may still be present can be removed using customary methods, such as by convective air drying or
- composition according to the invention is in the form of a two-component (2K) polyurethane composition.
- 2K two-component
- Polyurethane paints contain e.g. a component (I) and a component (II), the component (I) containing at least one of the abovementioned compounds having at least two groups which are reactive toward NCO groups, as used for the production of the urea group-containing polyurethanes.
- component (I) may contain a prepolymer which contains at least two groups which are reactive toward NCO groups.
- Component (II) contains at least one of the aforementioned polyisocyanates, such as those used to prepare urea groups
- Polyurethanes are used. Alternatively or additionally, the
- Component (II) contain a prepolymer which contains at least two NCO groups. If appropriate, components (I) and / or (II) may contain further oligomers and / or polymeric constituents. For example, in case In an aqueous two-component (2K) polyurethane composition, component (I) is one or more further polyurethane resins and / or
- the other polymers are generally water-soluble or water-dispersible and have hydroxyl groups and optionally acid groups or their salts.
- Components of the composition according to the invention can only be present in component (I) or (II) or in part in both.
- the production of the two components (I) and (II) of the two-component (2K) polyurethane composition according to the invention is carried out according to the customary methods from the individual components with stirring.
- Coating agents are also produced from these two components (I) and (II) by stirring or dispersing using the devices conventionally used, for example using a dissolver or the like, or by means of 2-component metering and mixing systems which are also commonly used.
- the two-component (2K) polyurethane composition can be in the form of an aqueous lacquer.
- a suitable aqueous two-component (2K) polyurethane varnish usually contains, when ready for application, based on the total weight of the composition:
- At least one conductive filler (previously as
- plastics such as B. ABS, AMMA, ASA, CA, CAB, EP, UF, CF, MF, MPF, PF, PAN, PA, PC, PE, HDPE, LDPE, LLDPE, UHMWPE, PET, PMMA, PP, PS, SB, PUR, PVC, RF, SAN, PBT, PPE, POM, PUR-RIM, SMC, BMC, PP-EPDM and UP (short names according to DIN 7728T1) can be coated.
- the plastics to be coated can of course also be used
- Polymer blends modified plastics or fiber-reinforced plastics.
- the two-component (2K) polyurethane composition according to the invention can also be applied to other substrates, such as metal, wood or paper or mineral substrates.
- non-functionalized and / or non-polar substrate surfaces these can be subjected to a pretreatment, such as with plasma or flame treatment, before coating.
- the substrates can be primed with the two-component (2K) polyurethane composition according to the invention before coating.
- All conventional primers both conventional and aqueous primers, can be used as primers.
- both radiation-curable, thermally curable or dual primers can be used.
- compositions according to the invention are usually used in
- Temperatures of at most 120 ° C preferably at temperatures of at most 100 ° C and very particularly preferably of at most 80 ° C.
- Another object of the invention is a method for producing a composition for shielding electromagnetic radiation, comprising the steps: a) providing at least one conductive filler and
- the invention further relates to a method for producing a substrate shielded from electromagnetic radiation,
- an electromagnetic radiation shielding composition comprising or consisting of an electromagnetic radiation shielding composition, as previously defined, which provides such an electromagnetic radiation shielding composition, and i) the electromagnetic shielding composition
- Radiation forms the substrate (molding), or ii) into a substrate the shielding composition
- incorporación incorporates electromagnetic radiation (incorporation), or iii) at least partially a substrate with the composition for
- substrate is understood to mean any sheet-like structure onto which the composition according to the invention can be applied or into which the composition according to the invention can be incorporated or which consists of the composition according to the invention.
- Sheet-like structures are e.g. B. housing, cable sheaths, sleeves, covers, sensor systems.
- the material composition of the substrate corresponds to the shielding composition according to the invention
- the substrate results from subjecting the substrate to at least one shaping step.
- a different substrate is used in addition to the composition according to the invention for shielding electromagnetic radiation.
- the substrate is preferably selected from plastics, metals, wood-based materials, glass, ceramics, mineral
- Suitable substrates for variants ii) and iii) are plastics
- the substrate is a composite that comprises at least one reinforced and / or filled plastic material or from at least one reinforced and / or filled
- Plastic material is made. Suitable fillers and reinforcing materials are those mentioned above as component d), to which reference is made here.
- Suitable plastics in the variants ii) and iii) can in principle be selected from the plastics, as they also as matrix polymers and Coating with a two-component (2K) polyurethane composition according to the invention can be used.
- the plastics are preferably selected from polyurethanes, silicones, fluorosilicones, polycarbonates, ethylene vinyl acetates (EVA), acrylonitrile butadiene rubbers (ABN), acrylonitrile butadiene styrenes (ABS), acrylonitrile methyl methacrylates (AMMA), acrylonitrile styrene Acrylates (ASA),
- CA Cellulose Acetates
- CAB Cellulose Acetate Butyrates
- PSU Polysulfones
- PVC Polyvinyl Chlorides
- PPE Polyphenylene Ethers
- PS Polystyrenes
- PA Polyamides
- PE Polyolefins
- PE Polyethylene
- PP polypropylene
- PK polyketones
- PEK polyether ketones
- Polyether ketones Polyimides (PI), polyetherimides, polyethylene terephthalates (PET), polybutylene terephthalates (PBT), fluoropolymers, polyesters,
- Polyacetals e.g. Polyoxymethylene (POM), liquid crystal polymers,
- Polyether sulfones PES
- epoxy resins EP
- phenolic resins chlorosulfonates
- polybutadienes polybutylenes
- polyneoprenes polynitriles
- polyisoprenes natural rubbers
- copolymer rubbers such as styrene-isoprene-styrenes (SIS), styrene-butadiene-styrenes (SBS) EPR), ethylene-propylene-diene rubbers (EPDM), nitrile-butadiene rubbers (NBR), styrene-butadiene rubbers (SBR) and their copolymers and mixtures (blends) thereof.
- SIS styrene-isoprene-styrenes
- SBS styrene-butadiene-styrenes
- EPDM ethylene-propylene-diene rubbers
- NBR nitrile-butadiene
- Preferred aliphatic and aromatic polyether ketones are aliphatic polyether ether ketones or aromatic polyether ether ketones (PEEK).
- a special version are aromatic polyether ether ketones.
- the substrate comprises at least one polymer or the substrate consists of at least one polymer, selected from so-called high-performance plastics, which are characterized by their
- the polymers are then preferably selected from aliphatic and aromatic polyketones, aliphatic and aromatic polyether ketones (PEK), especially aliphatic and aromatic polyether ether ketones (PEEK), high-temperature polyamides (HTPA), polyamideimides (PAI), polyphenylene sulfides (PPS), polyarylsulfones and mixtures (blends) from that.
- PEK aliphatic and aromatic polyether ketones
- PEEK aliphatic and aromatic polyether ether ketones
- HTPA high-temperature polyamides
- PAI polyamideimides
- PPS polyphenylene sulfides
- blends mixtures
- the substrate comprises or consists of at least one polymer
- Substrate made of at least one polymer, selected from aliphatic and aromatic polyketones (PK), aliphatic and aromatic
- PEEK Polyetheretherketones
- PA polyamides
- High temperature polyamides HTPA
- PC polycarbonates
- PBT Polybutylene terephthalate
- polyarylsulfones are selected from polysulfones (PSU), polyethersulfones (PES), and
- Polyphenylene sulfones PPSU and bends from PSU and ABS.
- a preferred embodiment comprises a method as defined above, in which a drying and / or curing step is also carried out.
- composition for shielding electromagnetic radiation with at least one additive different from the conductive filler a Suitable additives are those mentioned above.
- Shapes ( variant 1
- the substrate is formed from the composition for shielding electromagnetic radiation.
- the composition according to the invention is plasticized and subjected to a shaping step. These are shaping steps known to the person skilled in the art, such as casting molds,
- the composition for shielding is electromagnetic in a substrate
- Suitable processes for incorporation are known in principle to the person skilled in the art and include those which are usually used for compounding
- Plastic molding compounds are used.
- the incorporation can be carried out either in the melt or in the solid phase.
- a combination of these methods is also possible, e.g. B. by premixing in the solid phase and then mixing in the melt.
- Conventional devices such as kneaders or extruders can be used.
- composition of electromagnetic radiation obtained in the substrate can then be subjected to at least one further process step become.
- This is preferably selected from a shape
- a substrate is at least partially coated with the shielding
- the substrates are coated with the compositions described for shielding electromagnetic radiation by customary methods known to the person skilled in the art. For this, the
- composition for shielding electromagnetic radiation or a coating composition containing it applied to the substrate to be coated in the desired thickness and optionally dried and / or optionally partially or completely hardened. If desired, this process can be repeated one or more times.
- the application to the substrate can in a known manner, for. B. by dipping, spraying, filling, knife coating, brushing, rolling, dip-coating, rolling, casting, laminating, back-spraying, in-mold coating or coextruding, screen printing, pad printing, spinning.
- the coating can e.g. B. after a spray process such. B. air pressure, airless or electrostatic spraying can be applied one or more times.
- the coating thickness is usually in a range from about 5 to 1000 m ⁇ ti, preferably 10 to 500 m ⁇ ti.
- Coatings can be applied under normal temperature conditions, ie without heating the coating, but also at elevated temperatures become.
- the coating can e.g. B. during and / or after application at elevated temperature, for. B. at 25 to 200 ° C, preferably 30 to 100 ° C and / or cured.
- Another object of the invention is the use of
- composition according to the invention for shielding electromagnetic radiation.
- the composition according to the invention, as previously defined, for shielding electromagnetic radiation can be used in electronic housings.
- Electronic housings are housings for e-mobility vehicles, especially for
- Figure 1 Screen attenuation in [dB] for various coatings with the composition according to the invention:
- Sample F1 coating thickness 200 m ⁇ ti
- Sample F2 coating thickness 250 m ⁇ ti
- Sample G1 coating thickness 150 m ⁇ ti.
- the shielding attenuation is measured in accordance with ASTM D 4935-99.
- the composition (1) contains:
- composition (2) contains:
- composition (3) contains:
- composition (4) contains:
- polyurethane urea 56% by weight of a polyurethane urea, based on polycaprolacone (MW 1000), 0.8% by weight of poly (3,4-ethylenedioxythiophene) polystyrene sulfonate as conductive polymer,
- composition (1) was applied to a polymer surface
- Sample F2 coating thickness 250 m ⁇ ti
- Sample G1 coating thickness 150 m ⁇ ti
- the shielding attenuation was then measured.
- the shielding values of the coatings are all well above the CISPR 25 requirements (see Figure 1).
- Figure 2 Shielding attenuation in [dB] for glass fiber reinforced polyester as substrates with the composition according to the invention (1).
- composition (1) was applied to a polymer surface
- the shielding attenuation was then measured.
- the shielding values of the coating are all well above the CISPR 25 requirements and the Chinese shielding standard (Chinese Shielding Norm) (see Figure 2).
- FIG. 3 shielding attenuation in [dB] for different temperatures of the composition according to the invention (1) (coating thickness 250m ⁇ ti).
- the composition (1) obtained was applied to a thermally and electrically conductive thermoplastic (graphite-filled polyamide 66) with a layer thickness of 250 m ⁇ ti: the measurement for shielding attenuation was then carried out.
- the thermally and electrically conductive thermoplastic graphite-filled polyamide 66
- the shielding values of the coatings are all well above the CISPR 25 requirements and the Chinese shielding norm (Chinese Shielding Norm) (see Figure 3).
- the peaks between approx. 12 MHz and 35 MHz are due to the measurement and are due to a resonance phenomenon in the measuring apparatus.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Nanotechnology (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Conductive Materials (AREA)
- Organic Insulating Materials (AREA)
- Non-Insulated Conductors (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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EP19734381.7A EP3814414A1 (de) | 2018-06-27 | 2019-06-27 | Zusammensetzung zur abschirmung elektromagnetischer strahlung |
US17/255,443 US20210289675A1 (en) | 2018-06-27 | 2019-06-27 | Composition for shielding against electromagnetic radiation |
CN201980043837.5A CN112399988A (zh) | 2018-06-27 | 2019-06-27 | 用于屏蔽电磁辐射的组合物 |
JP2020571781A JP2021534265A (ja) | 2018-06-27 | 2019-06-27 | 電磁放射線遮蔽用組成物 |
BR112020024497-0A BR112020024497A2 (pt) | 2018-06-27 | 2019-06-27 | composição para blindagem contra radiação eletromagnética |
CA3104790A CA3104790A1 (en) | 2018-06-27 | 2019-06-27 | Composition for shielding against electromagnetic radiation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102018115503.4A DE102018115503A1 (de) | 2018-06-27 | 2018-06-27 | Zusammensetzung zur Abschirmung elektromagnetischer Strahlung |
DE102018115503.4 | 2018-06-27 |
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WO2020002511A1 true WO2020002511A1 (de) | 2020-01-02 |
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PCT/EP2019/067174 WO2020002511A1 (de) | 2018-06-27 | 2019-06-27 | Zusammensetzung zur abschirmung elektromagnetischer strahlung |
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US (1) | US20210289675A1 (de) |
EP (1) | EP3814414A1 (de) |
JP (1) | JP2021534265A (de) |
CN (1) | CN112399988A (de) |
BR (1) | BR112020024497A2 (de) |
CA (1) | CA3104790A1 (de) |
DE (1) | DE102018115503A1 (de) |
WO (1) | WO2020002511A1 (de) |
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US20220146233A1 (en) * | 2020-11-09 | 2022-05-12 | Vizun Holdings LLC | Ballistic fiber compositions, ballistic protective articles, and related methods |
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DE102019118092A1 (de) | 2019-07-04 | 2021-01-07 | Carl Freudenberg Kg | Verfahren zur Herstellung eines gegenüber elektromagnetischer Strahlung abgeschirmten Bauteils |
DE102020116305A1 (de) | 2020-02-04 | 2021-08-05 | Georg Fritzmeier - GmbH & Co. KG | Abdeckstruktur und Verfahren zum Herstellen einer Abdeckstruktur |
DE102020207497A1 (de) * | 2020-06-17 | 2021-12-23 | Contitech Usa, Inc. | Elektrisch leit- oder ableitfähige Elastomerschicht mit hellem Erscheinungsbild |
GB202110218D0 (en) * | 2021-07-15 | 2021-09-01 | Nicoventures Trading Ltd | Aerosol provision device |
DE102022125940A1 (de) * | 2022-10-07 | 2024-04-18 | Thüringisches Institut für Textil- und Kunststoff-Forschung Rudolstadt e.V. | Magnetische, funktionalisierte Polymersubstrate für Hochfrequenzanwendungen |
CN115433511B (zh) * | 2022-10-21 | 2023-06-23 | 吉林大学 | 一种掺合型水性聚氨酯基电磁屏蔽涂料及其制备方法 |
CN115678393B (zh) * | 2022-11-07 | 2024-01-19 | 江南大学 | 一种具有电磁屏蔽效能的聚吡咯/聚脲的制备方法 |
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-
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- 2019-06-27 JP JP2020571781A patent/JP2021534265A/ja active Pending
- 2019-06-27 CA CA3104790A patent/CA3104790A1/en active Pending
- 2019-06-27 EP EP19734381.7A patent/EP3814414A1/de not_active Withdrawn
- 2019-06-27 CN CN201980043837.5A patent/CN112399988A/zh active Pending
- 2019-06-27 US US17/255,443 patent/US20210289675A1/en active Pending
- 2019-06-27 WO PCT/EP2019/067174 patent/WO2020002511A1/de active Search and Examination
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CA3104790A1 (en) | 2020-01-02 |
EP3814414A1 (de) | 2021-05-05 |
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BR112020024497A2 (pt) | 2021-03-02 |
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US20210289675A1 (en) | 2021-09-16 |
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