1615results about "Adhesive processes" patented technology

The invention discloses a pure bio-based polyhydroxyalkanoate adhesive as well as preparation and application thereof, and belongs to the technical field of degradable adhesives. According to the adhesive, polyhydroxybutyrate valerate or polyhydroxybutyrate hexanoate is used as a matrix, and the acid value reaches 2-15 mg KOH / g through molten end group activation; a reactive emulsifier with a hydrophilic-lipophilic balance value of 9-12 is introduced into a water phase, and the stable aqueous dispersion is prepared through phase inversion high-shear emulsification. The Z-average particle size of the dispersion is 0.12-0.30 [mu] m, and the content of the free surfactant is not higher than 30wt%. After the tackifying resin, the plasticizer and the vegetable wax are compounded, the bio-based carbon content of the obtained adhesive is not lower than 95%, and the volatile organic compound content is not higher than 100 mg / kg. The paper / paper heat sealing strength of the adhesive is not lower than 7.0 N / 15mm, the 180-degree peel strength is not lower than 7.5 N / 25mm, and the adhesive can pass repulping evaluation.

A composite radiative cooling material includes a first layer including a reflective material, a second layer including a porous material, and a third layer including an emissive material. The optical properties of the respective materials and the arrangement of the respective layers cause the radiative cooling material to exhibit a total solar reflectance greater than 85%, and a thermal emissivity greater than 85% in a wavelength range of 8 to 13 μm. The layers may be in a vertically stacked arrangement, with the third layer capable of directly facing the sky when the composite radiative cooling material is installed for cooling a load, the second layer arranged under the third layer, and the first layer arranged under the second layer. The composite radiative cooling material may be thermally coupled to a cooling load to provide radiative cooling to the cooling load.

A method for mounting, preferably bonding, an optical element (14) for microlithography to a mounting element (2) is presented and described, as is a mounting device (1) for mounting, preferably bonding, an optical element (14) for microlithography to a mounting element (2). The described method and mounting device are proposed to enable fast and precise mounting of an optical element (14) for microlithography to a mounting element (2), regardless of the diameter of the receiving opening (11) of the mounting element (2). An optical module for microlithography is also described.

[Problem] To provide a novel polarizing plate that inhibits a poor external appearance of a polarizing film due to thermal contraction, and that excels in durability. [Solution] This polarizing plate comprises a polarizing film composed of a polyvinyl alcohol–based resin, and a supporting base material layered on at least one of the surfaces of the polarizing film with a bonding layer therebetween, said supporting base material being light-transmitting, and is characterized in that the bonding layer is composed of a molecular bonding agent that binds the polarizing film and the supporting base material together via a chemical bond.

The invention provides a temporary bonding adhesive for low-temperature bonding, a preparation method and a bonding and de-bonding method. The temporary bonding adhesive for low-temperature bonding comprises the following components in parts by weight: 30-60 parts of a solvent; 5 to 20 parts of deionized water; 20 to 40 parts of self-crosslinking resin; 0.5-2 parts of a water repellent agent; 0.5-2 parts of an emulsifier; and 0.1-1 part of a leveling agent. The temporary bonding adhesive for low-temperature bonding can realize successful bonding at a low temperature lower than 100 DEG C, effectively avoids the damage of a wafer structure caused by a traditional high-temperature bonding process, can be decomposed and dissolved in a weak base aqueous solution to realize de-bonding after a bonding task is completed, and has no cleaning residue. The temporary bonding adhesive for low-temperature bonding has the remarkable advantages of low-temperature bonding, high thickness uniformity, no residue, easiness in de-bonding and the like, can meet the requirements of advanced semiconductor manufacturing and microelectronic packaging fields on bonding materials, and has a wide application prospect.

The invention relates to a method for connecting a holding element (1) to an optical element (2) by means of a connecting material (3), comprising the steps of: arranging the connecting material (3) between the holding element (1) and the optical element (2), and curing the connecting material (3), wherein the connecting material (3) is irradiated with radiation (4) for curing the connecting material (3) for curing. The object of providing a method with which a holding element can be connected to an optical element in a process-reliable manner, which allows flexible optical designs and is cost-effective, is achieved in that the radiation (4) for curing the connecting material (3) is coupled into the connecting material (3) by means of a deflection device (5) for deflecting the radiation (4).The invention further relates to a holding element (1) for connection to an optical element (2) by means of a connecting material (3) and to a system (10) for connecting a holding element (1) to an optical element (2) by means of a connecting material (3), in particular for carrying out the method according to the invention.

The various implementations described herein include adhesive compositions for high-voltage focused ultrasound applications. In one aspect, an ultrasound transducer comprises a plurality of tiles. Each tile includes a first electrically conductive layer, a second electrically conductive layer, a plurality of transducer elements disposed between the first electrically conductive layer and the second electrically conductive layer, and a composite structural adhesive (a) disposed between the first electrically conductive layer and the second electrically conductive layer and (b) disposed between respective adjacent transducer elements of the plurality of transducer elements. The composite structural adhesive includes an epoxy resin, fumed silica, and a powder selected from the group consisting of: (i) micronized mica, (ii) bioactive glass powder, and (iii) micronized mica and bioactive glass powder.

Provided are: a curable resin composition that obtains a cured product having excellent adhesiveness, flexibility and dismantling properties; a cured product thereof; and a disassemblable adhesive material. A curable resin composition according to the present embodiment contains: an epoxy resin (A) having a specific structure and having an epoxy equivalent weight of 500-10,000 g / eq, an epoxy resin (B) having an epoxy equivalent weight of 100-300 g / eq, a curable functional group-containing compound (C), and thermally expandable particles (D). The curable functional group-containing compound (C) has a specific structure having a reversible bond.

The problem addressed by the present invention is to provide a method for manufacturing an optical system for a head-mounted display that allows realization of a head-mounted display that prevents unexpected blurring and bleeding and that is excellent in a sense of immersion. The problem is solved by a method for manufacturing an optical system for a head-mounted display, the method including a bonding step, which is a manufacturing step for a laminate formed by laminating a plurality of optical members and in which a plurality of optical members are bonded and fixed by laminating one optical member on a surface of another optical member, wherein the bonding step includes a step for applying a bonding layer forming composition to one optical member, a step for applying a bonding layer forming composition to another optical member, and a step for using a nip roller to laminate the one optical member and the another optical member such that the bonding layer forming compositions face each other.

The present invention is drawn to an adhesive or binder composition comprising, —a cationic polyelectrolyte, —an anionic polyelectrolyte, —a mineral salt selected from the group consisting of alkaline metal or alkaline earth metal halogenides, —a particulate mineral filler, —a water-soluble polyphenol comprising at least one polyhydroxylated aromatic ring structure, and —water It is also drawn to the use of such a composition as an adhesive, binder, coating or sealant in the construction industry.

The invention discloses a process for reducing the adhesive property of a photovoltaic EVA (Ethylene Vinyl Acetate) adhesive film by utilizing supercritical fluid, which comprises the following steps of: (1) cutting a photovoltaic module into small blocks of 20mm * 20mm, and putting an assistant cross-linking agent and a green cosolvent into a reaction kettle together through formula engineering; (2) heating the reaction kettle, introducing CO2 and pressurizing; (3) carrying out heat preservation treatment for 0.5-1 hour under the condition of stable temperature and pressure; (4) quickly releasing pressure and cooling to form a porous structure at the interface of the EVA adhesive film; and (5) taking out the treated photovoltaic module, and stripping the EVA adhesive film foam for recycling. Through the synergistic effect of supercritical CO2 and a cosolvent, an EVA adhesive film interface processing aid migrates inwards, the crosslinking degree of the EVA adhesive film is further increased to 98.6%, the interaction with a back plate is reduced by forming a porous structure on the EVA adhesive film interface, the porosity reaches 85%, the contact area is reduced, the bonding strength of the EVA adhesive film is remarkably reduced, and the peel strength is reduced by 70% or above.

To provide a film thickness measurement method that makes it possible to measure the film thickness of an adhesive even when a crack occurs in the adhesive that is separated from a first member and a second member after a curing step.SOLUTION: A film thickness measurement method for an adhesive comprises a placement step, a curing step, a bonding step, and a measurement step. The placement step is for placing an adhesive on surfaces of bonding sites of a first member and a second member through release sheets. The release sheets are for preventing the first member and the second member from being bonded to each other by the adhesive. The curing step is for curing the adhesive. The bonding step is for taking out the cured adhesive and bonding a film. On the film, a position where the thickness of the adhesive is to be measured is marked. The measurement step is for measuring the thickness of the adhesive at the marked position.SELECTED DRAWING: Figure 1

Laminates designed and equipped to be separated after long-term bonding are provided. The laminates comprise a first pressure sensitive adhesive layer, a separation layer, and a second pressure sensitive adhesive layer. The separation layer comprises a laser-sensitive pigment which at the same time is coloring, and so preferably a black coloration is produced, and consists of a cured coating material, preferably an electron beam-cured or UV-cured coating material, which is at least partly removable by laser irradiation, wherein the first pressure sensitive adhesive layer and / or the second pressure sensitive adhesive layer are laser beam-translucent.

A pressure sensitive adhesive sheet includes a pressure sensitive adhesive layer catching elements distant from a holding substrate. The pressure sensitive adhesive layer has unevenness on a surface and having a complex shear elastic modulus at 23° C. of 0.001 MPa or greater and 1.0 MPa or less.

Multi-ply structures incorporating adhesive compositions, products produced from such structures, and methods of producing the structures.

The present invention relates to a debondable solvent-borne pressure sensitive adhesive composition comprising a) a (meth)acrylate co-polymer formed from the monomers selected from the group consisting of ethyl (meth)acrylate, methyl acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 3-epoxypropyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, hydrogenated polybutadiene(meth)acrylate, glacial acrylic acid, vinyl acetate, and mixtures thereof; b) an electrolyte selected from the group consisting of 1-butyl-3-methylimidazolium bis(trifluoromethylsolfonyl)imide, 1-ethyl-3-vinylimidazolium methanesulfonate, 1-dodecyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, tributyl(ethyl) phosphonium diethyl phosphate, trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)amide and mixtures thereof; c) a cross-linker; and d) a solvent.

The present invention makes it possible for an object that is being held on an adhesive sheet provided with an adhesive layer having protrusions and recessions on the surface thereof to be picked up by means of a milder operation.　Provided is a method for peeling an object from an adhesive sheet that comprises a base material and an energy reactive adhesive layer having protrusions and recessions on the surface thereof, the adhesive sheet holding the object on the adhesive layer. Energy is applied to the adhesive sheet. The adhesive sheet is expanded in the plane direction. The object is peeled from the adhesive layer of the adhesive sheet after energy has been applied and the sheet has been expanded in the plane direction.

Described herein is a composite adhesive composition. The composition comprises: a plurality of polymeric nanoparticles dispersed within a (meth)acrylate-based matrix; and the (meth)acrylate-based matrix is derived from a C1 to C12(meth)acrylate ester monomer and a (meth)acrylate macromer. In some embodiments, these composite adhesives show good impact resistance and good dynamic shear resistance. In one embodiment, an ionic liquid is added to the composite adhesive to enable electro-debonding.

A bonded state prediction system according to the present invention predicts the bonded state of an adhesive object and an adherend when the adhesive object is bonded to the adherend; and this bonded state prediction system comprises a data acquisition unit which acquires two or more pieces of data including physical property information of the object on the two-dimensional coordinates, and a bonded state prediction unit which predicts the bonded state of the object and the adherend using the thus-acquired two or more pieces of data.

The invention relates to a battery housing (1) for a high-voltage battery, comprising a housing base (3) and a housing cover (2) which are connected via an adhesive connection (6), wherein a separating cord (5) is arranged in the region of the adhesive connection (6) inside the battery housing (1). The battery housing according to the invention is characterized in that the separating cord (5) is self-adhesive.

The invention relates to acrylate modified polyester resin as well as a preparation method and application thereof. The method comprises the following steps: (1) performing esterification reaction on anhydride with polyfunctional groups and long-chain unsaturated monofunctional alcohol to obtain an unsaturated intermediate; (2) carrying out esterification reaction on the unsaturated intermediate obtained in the step (1), dibasic acid and dihydric alcohol, and then carrying out polycondensation reaction to obtain a polyester resin intermediate containing unsaturated double bonds; and (3) carrying out free radical polymerization reaction on the polyester resin intermediate containing the unsaturated double bond obtained in the step (2) and an acrylate monomer to obtain the acrylate modified polyester resin. The acrylate modified polyester resin obtained by the method provided by the invention has excellent non-polar base material bonding performance.

The present invention provides a method for manufacturing an adhesive member, comprising the steps of applying an ultraviolet-curable silicone composition containing (A) an organopolysiloxane containing an unsaturated group, (B) an organohydrogenpolysiloxane, and (C) an ultraviolet-activated hydrosilylated platinum catalyst having a cyclopentadienyl group to which a condensed aromatic hydrocarbon group is bonded as a ligand, to a first substrate layer, and including in any order: (i) bonding the first substrate layer to which the ultraviolet-curable silicone composition has been applied to a second substrate layer via a layer of ultraviolet-curable silicone composition; (ii) depressurizing the ultraviolet-curable silicone composition applied to the first substrate layer under a pressure below atmospheric pressure; and (iii) irradiating the ultraviolet-curable silicone composition applied to the first substrate layer with ultraviolet light. The invention also provides an adhesive made of a silicone composition with excellent curability, and an adhesive member with high adhesiveness and high reliability as a component.

To provide an adhesive tape for processing an electronic component capable of stably holding a substrate to be processed.SOLUTION: An adhesive tape 10 for processing electronic components includes a base material 11, a mesh layer 12 having a plurality of openings O1, and an adhesive layer 2 disposed on a first surface S1 of the base material 11. The base material has a sea-island structure having a region X that can be cut by water-jet laser processing from the surface on the adhesive layer side of the adhesive tape for processing electronic components and a region Y that cannot be cut by the water-jet laser processing in a plan view as viewed from the S1 of the second surface side opposite to the S2 of the first surface of the base material, in which the region X is an island and the region Y is a sea.SELECTED DRAWING: Figure 1

Disclosed is a method for manufacturing a separator having a polymer adhesive layer. The method includes preparing an aqueous polymer slurry comprising a particulate binder polymer having a glass transition temperature Tg of 20° C. or more and a particle size D50 of 300 to 800 nm, a wetting agent, and a particulate acrylic binder polymer having a glass transition temperature Tg of −10° C. or less and a particle size D50 of 100 to 200 nm, and coating the aqueous polymer slurry on at least one surface of a polyolefin-containing porous membrane having pores and drying the aqueous polymer slurry.

The invention relates to a preparation method of a double-layer high-temperature adhesive for connecting brass and aluminum oxide, which comprises the following steps: reacting aluminum hydroxide, zirconium hydroxide and dilute phosphoric acid to prepare an aluminum zirconium phosphate adhesive base solution, and compounding silicon powder, boron carbide, titanium powder, nickel powder and the adhesive base solution to prepare a special adhesive for coating a brass surface. And compounding silicon powder, boron carbide, titanium powder, nickel powder, aluminum oxide and the gum base solution to prepare the special adhesive for aluminum oxide surface coating. The brass surface coating special glue is brushed on the brass surface and cured, then the aluminum oxide surface coating special glue is brushed on the aluminum oxide surface, the brass coated with the adhesive and the aluminum oxide coated with the adhesive are attached together in the mode that the bonding surfaces are opposite, and the brass / aluminum oxide double-layer bonding piece is obtained after pressing and curing and can serve in the high-temperature environment. The method has the advantages that the special glue for brass surface coating and the special glue for aluminum oxide surface coating have high thermal expansion coefficient matching with brass and aluminum oxide, and thermal stress can be relieved; the double-layer adhesive can provide the bonding strength which can reach 1.3 MPa at the temperature of 500 DEG C.

The present invention relates to a curable and electrochemically debondable one-component (1K) structural adhesive composition comprising: a) a (meth) acrylate monomer selected from the group consisting of hydroxypropyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, isobornyl acrylate, isobornyl methacrylate, methyl methacrylate and mixtures thereof; b) a compound selected from the group consisting of 1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-pentyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-heptyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-octyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, and 1-octyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide; the preparation method comprises the following steps of: adding 1-(trifluoromethylsulfonyl) imide, 1-nonyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-decyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-dodecyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-tetradecyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-chloro-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-chloro-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-chloro-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-chloro-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1-chloro-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, 1- an electrolyte comprising a 1-hexadecyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, a 1-octadecyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, a trihexyltetradecyl phosphonium bis (trifluoromethylsulfonyl) amide, and mixtures thereof; c) a copolymerizable acid; d) an initiator; e) a core-shell toughening agent; and f) a toughening agent. The composition according to the present invention can withstand harsh conditions (high temperature and high humidity) while maintaining adhesion and deadhesion properties.

The present invention relates to an easily dismantling adhesive sheet having a layer having pressure-sensitive adhesiveness and adhesiveness containing an inorganic expanding agent and a resin, in which the layer having pressure-sensitive adhesiveness and adhesiveness has a pressure-sensitive adhesive strength of 1.0 N / 20 mm or more, and relates to a laminated body using the easily dismantling adhesive sheet, a joined body, a method for producing a joined body, and a method for dismantling a joined body.

The composition includes an acrylic monomer having a carboxylic acid group, an acrylic monomer having a hydroxyl group, at least one of an alkyl acrylate or alkyl methacrylate, and from 15 to 22 percent by weight of a compound composed of divalent segments L and at least two X groups. The divalent segments L are represented by formula L. Each segment L is independently directly bonded to two secondary N atoms, two tertiary N atoms, or a secondary and a tertiary N atom. Each R1 represents an alkylene group having from 1 to 4 carbon atoms, and at least some of the R1 groups are —CH2—CH2—CH2—CH2—. Each X group is independently represented by the formula CH2═C(R)—C(O)—O—V—W—C(O)—. Articles and methods using the composition are also described.

Thermoplastic films are disclosed that are suitable for use as auto wraps. The films comprise a thermoplastic polymer layer comprising: a thermoplastic polyurethane polymer: a polyvinyl acetal polymer; and a polymeric plasticizer. The thermoplastic polyurethane polymer is present in the thermoplastic polymer layer in an amount from about 70 to about 99 percent by weight. The films further comprise a patterned adhesive layer.

The present invention has an object of obtaining an electrically peelable adhesive product that is strong in adhesibility when used, is excellent in peelability even though a low voltage is applied, and does not leave much adhesive deposit after being peeled. The present invention achieves the above object by virtue of an electrically peelable adhesive composition contained in the adhesive product, the adhesive composition comprising an acrylic polymer, an ionic liquid having an ionic conductivity of 10−4 S / cm or more to 10−2 S / cm or less, and an alkyl ether of a polyethylene glycol, and containing 5 parts by weight or more to 30 parts by weight or less of the ionic liquid and of the alkyl ether of the polyethylene glycol with respect to 100 parts by weight of the acrylic polymer.