WO2019081387A1 - Rubans adhésifs à stabilité dimensionnelle - Google Patents

Rubans adhésifs à stabilité dimensionnelle

Info

Publication number
WO2019081387A1
WO2019081387A1 PCT/EP2018/078814 EP2018078814W WO2019081387A1 WO 2019081387 A1 WO2019081387 A1 WO 2019081387A1 EP 2018078814 W EP2018078814 W EP 2018078814W WO 2019081387 A1 WO2019081387 A1 WO 2019081387A1
Authority
WO
WIPO (PCT)
Prior art keywords
adhesive
adhesive tape
layer
silicone
layers
Prior art date
Application number
PCT/EP2018/078814
Other languages
German (de)
English (en)
Inventor
Björn Zeysing
Tobias Winkler
Frank Virus
Original Assignee
Tesa Se
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tesa Se filed Critical Tesa Se
Publication of WO2019081387A1 publication Critical patent/WO2019081387A1/fr

Links

Classifications

    • 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
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • 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
    • C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
    • C09J183/04—Polysiloxanes
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00—Presence of polysiloxane

Definitions

  • the state of the art includes dimensionally stable adhesive tapes with non-reactive pressure-sensitive adhesives.
  • adhesive tapes With such adhesive tapes, high layer thicknesses can be achieved. Curing is not required.
  • These tapes have the property of being highly elastic; but only limited holding forces can be realized for this purpose.
  • Adhesive patches are also known with these adhesive systems, but a high temperature is required for this purpose, which is not tolerated by all substrates Adhesive compounds achieve high strengths - with low elongation at break - but immediate load bearing is not possible with these systems.
  • liquid adhesives that cover a wide range of strength and elongation after cure at very low temperatures.
  • these adhesive systems in particular a tolerance compensation uneven substrate surfaces is possible;
  • Such squeezing of the adhesive is often undesirable.
  • a load absorption before curing is not possible with these adhesive systems.
  • the prior art does not provide satisfactory adhesive systems that combine the advantages of the aforementioned products, but reduce their disadvantages to a minimum.
  • the object of the present invention is therefore to provide a bonding solution with high strength for joining two components, in which a high, constant adhesive thickness can be achieved. It is intended to allow a tolerance compensation between the joining partners and to ensure an immediate load bearing through the joint. For sensitive components, it is desirable to keep the processing temperature of the joining process low.
  • the problem could be solved by providing a suitable double-sided adhesive tape with sufficient elasticity.
  • a first aspect of the invention relates to an at least single-layered adhesive tape.
  • the upper and lower surfaces of this adhesive tape are each formed by adhesives which are pressure-sensitive, at least in the area of the designated surfaces, in particular at room temperature (23 ° C.).
  • the adhesives are curable at a temperature below 100 ° C; Hardening is usually a crosslinking reaction.
  • the adhesive tape comprises at least one dimensionally stable layer, in particular a layer based on silicone and / or based on silane-modified polymers.
  • the adhesive tape according to the invention should have self-adhesive properties at the particular application temperature, that is to say the temperature at which it is applied to the substrate to be bonded, in order to bring about immediate adhesion to the substrate and to allow a direct load absorption at this application temperature.
  • the adhesive tape according to the invention is tacky at room temperature, in particular in order to enable application on one or both substrate surfaces at room temperature, or around a composite, which may also be produced at relatively high temperatures store and transport the components to be bonded and the adhesive tape before curing at room temperature.
  • adhesive films have pressure-sensitive adhesive properties.
  • tacy or “self-sticky” are referred to in the context of this document synonymous adhesives that allow even under relatively low pressure a permanent connection with the primer and can be replaced after use substantially residue-free from the primer again.
  • an adhesive pressure-sensitive adhesive tape has an adhesive strength in the uncured state of at least 0.5 N / cm, preferably 1 N / cm. The bond strength is determined here on steel analogous to ISO 29862: 2007 (Method 3) at 23 ° C. and 50% relative atmospheric humidity at a take-off speed of 300 mm / min and a take-off angle of 180 °.
  • the reinforcing film used is an etched PET film with a thickness of 36 ⁇ m, as available from Coveme (Italy).
  • the gluing of a 2 cm wide measuring strip is done by means of a 4 kg coiling machine at a temperature of 23 ° C.
  • the tape is removed immediately after application.
  • the measured value (in N / cm) was the average of three individual measurements.
  • Pressure-sensitive adhesives are permanently tacky at room temperature and therefore have a sufficiently low viscosity and high tack, so that they wet the surface of the respective adhesive base even at low pressure.
  • the adhesiveness of the adhesives is based on their adhesive properties and the removability on their cohesive properties.
  • the adhesive tape according to the invention has an inner, dimensionally stable layer region (I) (hereinafter also referred to simply as “inner layer region”) and two outer, pressure-sensitively adhesive, crosslinkable layer regions (A1, A2) (hereinafter also referred to simply as “outer layer regions”).
  • inner layer region hereinafter also referred to simply as “inner layer region”
  • outer layer regions hereinafter also referred to simply as “outer layer regions”
  • layer regions (I, A1 and A2) can be regions of a single adhesive layer S (FIGS. 1a and 1b) or of two layers S1, S2 (FIGS. 2a and 2b) or more layers (in particular three layers S1, S2, S3, see Fig. 3) are formed; see also below.
  • this adhesive layer can in particular be formed homogeneously overall - the corresponding layer regions (I and A1, or I and A2, or I and A1 and A2) are then not distinguishable.
  • the corresponding layer is then as a whole both dimensionally stable as well as tacky and crosslinkable.
  • Fig. 1 a shows this embodiment.
  • a single layer S - for example by means of appropriate surface treatments - does not have homogeneous properties over the entire layer thickness, cf. FIG. 1 b.
  • the dot-dash lines in this diagram schematically separate the areas A1, I and A2 from each other.
  • the "property change" between the layer areas does not need to be sharp, as the dot-dash line representation suggests, but the transition of the layer areas A1 into I and / or A2 in I can also take place, for example, continuously or otherwise "out of focus".
  • one or both of the outer layer regions A1 and / or A2 can also be individual adhesive layers which are not identical to the dimensionally stable layer I and have the properties defined for this layer (s) (compare FIGS. 2a, 2b and 3).
  • the region (S1, S2, S3) designated by a curly bracket in each case designates a layer, which in turn can represent a single layer region, but can also comprise a plurality of (in particular two) layer regions.
  • the solid lines between two layer areas each symbolize a transition between two separate layers. For the layer area transitions within a layer (dot-dash lines), the statements already made for FIGS. 1a and 1b apply accordingly.
  • the inner layer region I can moreover be formed by more than one (two, three or more) identical or different dimensionally stable layers (not shown graphically). Bonding layers, such as additional (thin) adhesive layers, anchoring layers or the like, may optionally be provided between such dimensionally stable layers.
  • the at least one dimensionally stable layer of the present invention is, in a preferred procedure, a polymer layer which may be chemically crosslinked.
  • a polymer layer which may be chemically crosslinked.
  • chemically fully crosslinked polymer layers can be used, but in particular preferably a chemically partially crosslinked polymer layer, ie a polymer layer in which bridge bonds are formed between at least part of the macromolecules in such a way that a network results but still sufficient functional groups for further crosslinking has.
  • the reactive adhesive system is present over the entire tape width. This reactive adhesive system is first cross-linked and the cross-linking reaction stopped at a time when only partial cross-linking has taken place. The initiation of the curing (in particular after the application of the adhesive tape, ie the production of the final adhesive bond) takes place by full crosslinking of the reactive adhesive system.
  • Two reactive systems are used, including, for example
  • One of the reactive systems (may be an adhesive, but need not necessarily) is at least in the inner region I of the adhesive tape, but may also be present in the outer regions A1 and / or A2.
  • a second reactive system which is an adhesive system, is present at least in the outer layer regions A1 and A2.
  • By initiating the curing (in particular after the application of the adhesive tape, ie the production of the final adhesive bond) in the outer layer regions is carried out by fully crosslinking of the second reactive Adhesive system. If the first reactive system is only partially crosslinked at this point in time, it is advantageously fully crosslinked simultaneously with the curing reaction of the second reactive adhesive system.
  • the inner layer is fully crosslinked simultaneously with the curing reaction of the reactive adhesive system (s) in the outer layers.
  • the anchoring of the outer layers can be optimized on the inner layer.
  • curing or crosslinking is carried out after application of the adhesive tape, that is to say in particular after joining the composite of two substrates to be bonded together and the adhesive tape arranged therebetween, whereby a higher strength is developed after the curing reaction than before curing.
  • the tensile test is carried out with corresponding adhesive composition samples, whereby two test specimens of the dimensions 25.4 mm ⁇ 101, 6 mm ⁇ 1.0 mm with a bond area of 25.4 mm ⁇ 12, The bond is then cured under the conditions necessary for crosslinking the adhesive
  • the strength of the bond is measured by a tensile test according to ISO 4587. According to the invention, the strength after the curing reaction is higher than before.
  • the adhesives are already curable at temperatures of less than 50 ° C, more preferably at room temperature (23 ° C).
  • the initiation or activation of the curing reaction can be advantageously activated by radiation, such as UV radiation and / or visible light.
  • radiation such as UV radiation and / or visible light.
  • all other types of radiation such as electron radiation, plasma, corona, laser radiation and the like, can also be used here.
  • moisture-curing reactive systems preferably adhesive systems
  • the curing thus being effected by water.
  • the curing reaction is effected by the fact that the two reactants of the reactive system are present in two different adhesive layers (two-component system), which are first brought into contact during the bonding step that the curing reaction is triggered by bringing the reactants together. See also the following remarks in this document.
  • the outer layer areas are substantially fully crosslinked or fully cured.
  • the - especially partially crosslinked - dimensionally stable layer is chosen so that takes place at temperatures below 100 ° C, preferably below 50 ° C, preferably at room temperature crosslinking on the still available functional groups.
  • a preferred type of crosslinking takes place by means of moisture (H2O).
  • H2O moisture
  • the adhesive tape is sealed in moisture exclusion in polymer film.
  • the adhesive tape is removed from the polymer film. The crosslinking reaction starts so slowly by contact with the humidity that a joining process after opening the polymer film for a few hours is possible.
  • the reactive adhesive is activated via UV radiation.
  • the adhesive tape is stored in the absence of UV radiation, for example, welded in UV-impermeable film.
  • the adhesive tape is removed from the UV-impermeable film.
  • the weak intensity of UV radiation in normal sunlight allows a processing time of a few minutes.
  • the crosslinking is performed by a UV source of suitable wavelength and intensity.
  • the adhesive tape of the invention may be formed in one or more layers.
  • the adhesives on the lower and on the upper surface of the adhesive tape are part of the dimensionally stable layer-in particular the layer based on silicone or based on silane-modified polymers;
  • this dimensionally stable layer is then pressure-sensitive at its surfaces and curable according to the invention.
  • the dimensionally stable layer consists entirely of a pressure sensitive, curable material.
  • Single-layer adhesive tapes of the invention consist in a preferred procedure of highly viscous, in particular at least partially crosslinked polymer, which still has sufficient reactive groups to allow binding to the substrate surfaces after curing.
  • the entire layer should have a sufficiently high dimensional stability even before curing in order to prevent squeezing of the adhesive during production and storage.
  • “Sufficiently dimensionally stable” is to be understood in the first instance as meaning that a 6 mm thick pattern of an adhesive layer (for example a circular sample with a diameter of 1 cm) does not flow in a period of at least 24 h without external load and at +23 ° C, in particular in such a way that its contact surface with a planar substrate (for example a glass plate) does not increase by more than a maximum of 5%, preferably not more than 1%.
  • One or more moisture-curing silicones as e.g. be used in conventional structural silicone adhesives and sealants (crosslinking reaction based on the silicone condensation).
  • one, several (in any combination) or all of the following measures can be implemented to increase the cohesion and a
  • particulate fillers such as, for example, phyllosilicates, polysilicic acid, polymer particles (for example polyamides), etc.
  • fillers which form interactions with the silicone macromolecules, which lead to an increase in viscosity or to a cohesion increase
  • Film formers are thermoplastics that are compatible with the adhesive (miscible) and thus in mixture to a compared to the pure adhesive increased viscosity to lead.
  • the film formers are characterized in that they generally form a full-surface film in which the adhesive is present-in particular homogeneously distributed-whereby the film formers do not substantially reduce the crosslinking potential of the adhesive.
  • Reactive film-forming agents are polymers having functional groups which build up a polymeric skeleton and react with reactive components of the adhesive during the production process of the adhesive, so that a common (chemically combined) network is formed.
  • Reactive film formers are thus those polymers which have functional groups functionalized with functional groups
  • Adhesive can react.
  • the reaction of these "reactive film formers" with the reactive groups of the adhesive leads to an increase in the viscosity and a prevention of squeezing out of the adhesives.
  • sufficient reactive groups are left to significantly increase the cohesion in the frame to lead to the curing reaction.
  • Adhesive is flowable at high temperature, then introduced into the open carrier and on cooling, the viscosity increases so that the adhesive does not squeeze out again (see the document DE 10 2015 217 840 A for this principle)
  • the dimensionally stable layer is formed by another cohesive adhesive whose surfaces can realize high bond strengths by hardening.
  • the basis for such an adhesive may be, for example:
  • One or more radiation-crosslinking acrylates in particular with UV radiation or by light irradiation (in particular blue light) to be brought to polymerization compositions containing acrylate monomers.
  • mixtures (blends) of the abovementioned polymer or adhesive compositions the composition comprising two or more of the abovementioned representatives, including other polymer and / or adhesive mass systems not mentioned, in principle - apart from those given chemically or technically - no limits are set.
  • the adhesives may be additized with additives, based on the familiar to the expert knowledge of adhesive additives, in particular with regard to the achievement of certain properties of the adhesives is here based.
  • a second embodiment of the adhesive tape according to the invention consists of a two-layered structure with the dimensionally stable layer - in particular layer of silicone-based or based on silane-modified polymers (in the sense of a common layer comprising the inner layer region and one of the outer layer regions A1) and a further, pressure sensitive, curable Adhesive layer (in the sense of the other outer layer region A2).
  • the further adhesive-tacky, curable adhesive layer in the sense of the other outer layer region A2) may likewise be an adhesive based on silicone or based on silane-modified polymers, but in principle all other adhesive, curable adhesive systems can be used here.
  • the adhesive tape can be made specific by selecting the adhesive used there Bonding requirements by the corresponding substrate to be bonded to be adapted.
  • the dimensionally stable layer can be realized as defined for the single-layer adhesive tape; on a silicone basis, based on silane-modified polymers or in the alternative embodiment shown there.
  • Suitable adhesives for the further adhesive-tacky, curable adhesive layer are in principle all curable adhesive systems, in particular also those adhesive systems as already mentioned for the dimensionally stable layer.
  • the following reactive adhesive mass systems may be mentioned here:
  • One or more moisture-curing silicones as e.g. used in common structural silicone adhesives and sealants (base silicone condensation); where also one, several (in any combination) or all of the following states can be realized:
  • One or more radiation-curing acrylates in particular with UV radiation or by light irradiation (in particular blue light) to be brought to polymerization compositions containing acrylate monomers. 12.) One or more plasma-activatable acrylates
  • mixtures (blends) of the abovementioned adhesives with the composition of two or more of the abovementioned representatives, including other adhesive mass systems not mentioned, generally having no limits, except those given in chemical or technical terms.
  • the adhesives may be additized with additives, based on the familiar to the expert knowledge of adhesive additives, in particular with regard to the achievement of certain properties of the adhesives is here based.
  • a further embodiment of the invention relates to an at least three-layered structure, and in particular a precisely three-layered structure, comprising the at least one dimensionally stable layer, in particular silicon-based or silane-modified polymer layers (in the sense of inner layer region I) and two further external layers adhesive-tacky, curable adhesive layers (in the sense of the outer layer regions A1 and A2).
  • the portfolio of polymer systems that can be used for this purpose has been considerably expanded, namely non-adhesives.
  • the dimensionally stable layer in particular silicone-based layer or based on silane-modified polymers, may themselves be tack-tacky and / or curable.
  • the adhesives for the outer layers can be selected independently of one another.
  • the outer layers may be chemically identical or different.
  • both layers it is possible, for example, to select (identical or different) silicone-based or silane-modified polymers.
  • an outer layer it is also possible for an outer layer to use a further silicone-based adhesive or silane-modified polymers and for the other outer layer an adhesive which is not based on silicone or silane-modified polymers.
  • those adhesives which are not based on silicone or silane-modified polymers it being possible for the outer layers to be chemically identical or different.
  • here are all can be used further adhesive, curable adhesive systems.
  • a particular advantage is that both surfaces of the adhesive tape can be adapted to the requirements of each substrate to be bonded.
  • the adhesive of one or both of the outer layers may moreover be identical to or different from the composition of which the dimensionally stable layer is made, in particular based on silicone or based on silane-modified polymers.
  • the adhesive mass systems can be used, as they are already mentioned for the single-layer and the two-layer variant - and again in the form of alternatives -, where here - as already stated, the freedom also has to select those systems which themselves are not tacky and / or curable.
  • the adhesives can be used for the outer adhesive layers, as they have already been mentioned above for the two-layer adhesive tape.
  • the dimensionally stable layer may advantageously be an elastic or viscoelastic layer. In particular, it has a high strength.
  • the at least one layer based on silicone or based on silane-modified polymers has viscoelastic properties.
  • the viscosity of the core layer is sufficiently high that squeezing when winding on a roll and subsequent storage and transport is avoided.
  • it is still sufficiently low that the adhesive tape is capable of allowing a tolerance compensation when joining two components.
  • the construction according to the invention makes it possible to realize very thick adhesive tapes which fulfill the requirements of the object of the invention.
  • adhesive tapes with overall thicknesses of at least 1 mm, but also at least 1, 5 mm, at least 2 mm, at least 3 mm, at least 4 mm, at least 5 mm and even at least 6 mm can be realized.
  • the thickness values mentioned are mentioned here by way of example; so adhesive tapes can be realized considerably higher overall thicknesses.
  • thick, dimensionally stable adhesive tapes can be provided whose viscosity is sufficiently high to prevent squeezing of the mass, but which are sufficiently flowable to compensate for tolerances in the joining region (up to xxx).
  • the adhesives used are tacky and can immediately loads take up.
  • strengths are established which are significantly above all values achievable by pressure-sensitive adhesives.
  • the sum of the thicknesses of all dimensionally stable layers - in particular of all layers based on silicone or based on silane-modified polymers make up at least 80% of the total thickness of the adhesive tape, preferably at least 90%.
  • this inevitably results for the multilayer adhesive tapes, which exclusively have layers of silicone-based adhesives and / or those based on silane-modified polymers, likewise.
  • the dimensionally stable layer in particular the at least one layer based on silicone or based on silane-modified polymers - after curing or crosslinking, a maximum tensile strength of at least 500 kPa, measured according to ISO 527-3.
  • the entire adhesive tape prefferably has a maximum tensile strength after curing of at least 500 kPa, measured according to ISO 527-3.
  • the adhesive tape of the invention is further distinguished by the fact that it has a strength of at least 250 kPa after curing in the front tensile test between a glass and a metal substrate at a measurement in the entire temperature range between -40 ° C and + 90 ° C. (determined ASTM D 897-8).
  • Another aspect of the invention relates to a composite of two interconnected by means of an adhesive system substrates.
  • an adhesive system preferably an inventive at least single-layer, double-sided adhesive tape is used, as described in more detail in the context of this document.
  • the adhesive tape can be used as such as previously described; however, in a modification, the adhesive tape may also have been produced only after the bonding process.
  • This variant of the invention is described in particular in that the adhesive system a sequence of at least two layers bonded together, of which at least one of the layers is a silicone-based and / or based on silane-modified polymers.
  • the adhesive system a sequence of at least two layers bonded together, of which at least one of the layers is a silicone-based and / or based on silane-modified polymers.
  • the total thickness of the adhesive system is preferably at least 1 mm, more preferably at least 1.5 mm, more preferably at least 2 mm, even more preferably at least 3 mm, even more preferably at least 4 mm, even more preferably at least 5 mm. even more preferably at least 6 mm.
  • the aforementioned composites can in particular be produced in such a way that one of the substrates to be joined is provided with the adhesive system, ie in particular by the adhesive system - in particular the adhesive tape of the invention - being bonded to one of its pressure-sensitive adhesive surfaces on this substrate.
  • the second, sticky, still exposed surface is then bonded to the second of the substrates to be joined or the second of the substrates to be bonded on this.
  • the adhesive systems according to the invention are curable, in particular at least on their surfaces, as has already been described for the adhesive tape of the invention. By a subsequent curing process, the desired adhesive forces are then achieved.
  • the adhesive system comprises a sequence of at least two layers bonded together, wherein at least one of the layers is based on silicone and / or based on silane-modified polymers
  • a modification of the method for their production can also be carried out.
  • one of the substrates to be joined is equipped with at least one of the layers to be bonded together, or with a composite already several interconnected layers.
  • the second of the substrates to be joined is provided with at least one other of the layers to be bonded together, or also with an already existing layer composite.
  • the joining of the substrates to be joined is then carried out by bringing together the free surfaces of the adhesive layers or adhesive layer composites to be bonded together.
  • the adhesive tapes can either (preferably) be fixed on different components and - if appropriate, after so-facilitated interim storage - be added to each other.
  • an adhesive tape can first be fixed on a component, wherein the second is then added to the first. Only then is the second component bonded to the free surface of the second adhesive tape.
  • An advantage of the variant of the invention in which the adhesive system in full thickness is produced quasi only during the bonding (two-component or multi-component adhesive tape system, at least comprising the respective film or adhesive tape-shaped components A and B, hereinafter referred to as film A and Film B), it is possible to offer less thick adhesive tapes, which are laminated together during the application process.
  • the final thickness of the adhesive system in the adhesive joint (or the gap between the substrates to be bonded) then results from the addition of the thicknesses of the individual adhesive tapes used.
  • a two-component or multi-component adhesive tape system allows for the spatial separation of reactive components that are stable in storage in one of the adhesive tapes alone and are reacted in a short time when contacted with the other component.
  • Special inventive two-component and multi-component adhesive tape systems for thick reactive adhesive tapes include beispielswiese
  • Vinyl functionalized silicone and initiator e.g., Fe phthalocyanine
  • peroxide component e.g., cumene hydroperoxide
  • Another advantageous field of application is found in the automotive sector, in particular in the bonding of components and components with each other or with the body.
  • a good suitability of the adhesive tapes according to the invention for the bonding of glass - such as glass panes in the holder or in frame - or for the bonding of components or components is given to glass.
  • Such components to be glued to glass may be, for example, the base of mirror mounts, mounts for sensors - such as -, compression springs - for example for door or tailgate openings - and the like.
  • a further advantageous use of the adhesive tapes according to the invention is, for example, in the fixation of glass panes in facade elements ("structural glazing").

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un ruban adhésif comprenant au moins une couche et présentant une surface supérieure et une surface inférieure qui sont formées chacune de matières adhésives, ces matières adhésives au niveau des surfaces supérieure et inférieure étant autoadhésives à température ambiante et réticulables à une température inférieure à 0 °C. Ce ruban adhésif est caractérisé en ce qu'il comprend au moins une couche à base de silicone et/ou à base de polymères modifiés au silane.
PCT/EP2018/078814 2017-10-27 2018-10-19 Rubans adhésifs à stabilité dimensionnelle WO2019081387A1 (fr)

Applications Claiming Priority (2)

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DE102017219375 2017-10-27
DE102017219375.1 2017-10-27

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WO2019081387A1 true WO2019081387A1 (fr) 2019-05-02

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0587752A1 (fr) * 1991-05-23 1994-03-23 Minnesota Mining & Mfg Adhesifs autocollants.
EP1904597A2 (fr) * 2005-07-19 2008-04-02 Dow Corning Corporation Adhesifs par pression et procedes d'elaboration
US20080280086A1 (en) * 2007-05-11 2008-11-13 3M Innovative Properties Company Multi-layer assembly, multi-layer stretch releasing pressure-sensitive adhesive assembly, and methods of making and using the same
EP2865719A1 (fr) * 2012-06-22 2015-04-29 Momentive Performance Materials Japan LLC Composition de polyorganosiloxane durcissable de type en deux parties et son utilisation
DE102015217840A1 (de) 2015-09-17 2017-03-23 Tesa Se Flexibles klebendes flächiges Gebilde zur strukturellen Verklebung
WO2017048890A1 (fr) * 2015-09-18 2017-03-23 Henkel IP & Holding GmbH Adhésifs sensibles à la pression durcissables et transparents optiquement et utilisations associées

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0587752A1 (fr) * 1991-05-23 1994-03-23 Minnesota Mining & Mfg Adhesifs autocollants.
EP1904597A2 (fr) * 2005-07-19 2008-04-02 Dow Corning Corporation Adhesifs par pression et procedes d'elaboration
US20080280086A1 (en) * 2007-05-11 2008-11-13 3M Innovative Properties Company Multi-layer assembly, multi-layer stretch releasing pressure-sensitive adhesive assembly, and methods of making and using the same
EP2865719A1 (fr) * 2012-06-22 2015-04-29 Momentive Performance Materials Japan LLC Composition de polyorganosiloxane durcissable de type en deux parties et son utilisation
DE102015217840A1 (de) 2015-09-17 2017-03-23 Tesa Se Flexibles klebendes flächiges Gebilde zur strukturellen Verklebung
WO2017048890A1 (fr) * 2015-09-18 2017-03-23 Henkel IP & Holding GmbH Adhésifs sensibles à la pression durcissables et transparents optiquement et utilisations associées

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