713results about "Adhesive processes with surface pretreatment" patented technology

Epoxy-based adhesive compositions are provided, exhibiting improved uncured humidity resistance, cured humidity resistance and improved wash-off resistance, which upon curing result in crash durable and stress resistant cured bonds on steel and low surface tension surfaces, e.g. ZnMgAl, hot dipped galvanized (HDG) and treated aluminum surfaces. Also provided are bonded assemblies comprising pre-cure or fully cured epoxy-based adhesives, methods of making the epoxy-based adhesives, methods of bonding assemblies and articles of manufacture comprising the bonded assemblies.

A primer composition includes solvent, electrically conductive filler dispersed in the solvent, and a polymer at least one of dissolved or dispersed in the solvent. The polymer includes at least one of a polyurethane, polyacrylate, a polyamide, or a rubber. An adhesive system includes the electrically conductive composition and an electrically debonding adhesive including an ionic liquid. The use of the primer composition as a primer on an electrically nonconductive substrate in combination with an electrically debonding adhesive is also described. A method of making a bonded article and an article bonded with the adhesive system disclosed herein and / or made by the method disclosed herein are also described.

The invention provides a primer composition, a primer as well as a preparation method and application of the primer. The primer composition comprises a component A, a component B and a component C in a mass ratio of (5-10): 1: 1, the component A comprises maleic anhydride modified chlorinated polypropylene, gaseous silicon, carbon black and a first organic solvent; the component B comprises an isocyanate prepolymer and a second organic solvent; the component C comprises epoxy resin, a silane coupling agent and a third organic solvent. The primer can effectively shield visible light, meets the reliability requirement of an automobile terminal, can be directly coated on the surface of automobile glass, and can meet the requirements of customers on light shielding and subsequent reliability after being dried and subjected to injection molding; the adhesive can be applied to bonding of different thermoplastic materials and glass, has a good bonding effect, and does not generate a degumming phenomenon under a strong demolding condition, so that the adhesive has the effect of quickly improving the bonding strength.

The present invention provides a surface treatment liquid that can form an organic film sufficiently excellent in adhesive properties between metal and resin and is also excellent in chemical resistance properties, the surface treatment liquid being excellent in storage stability. The present invention relates to a metal surface treatment liquid for forming an organic film on a metal surface, wherein the surface treatment liquid contains a silane coupling agent and an acid and has a pH of 1.9 or less.

A laminate that includes a semiconductor substrate; a support substrate that is light-transmissive; an adhesive layer; and a release layer provided between the semiconductor substrate and the support substrate, the laminate being used when the release layer absorbs light irradiated from a side of the support substrate and then the semiconductor substrate and the support substrate are separated from each other, wherein the release layer is formed from a release agent composition, the release agent composition contains a light-absorbing compound having a molecular weight of 2,000 or less, and when the light-absorbing compound is measured for an absorption spectrum in a range of 250 to 800 nm, the absorption spectrum has a local maximum value, which is a maximum absorbance in a range of 250 to 800 nm, between 250 nm and 350 nm.

This laminate comprises: a first member, which is made of a silicone rubber; a second member, which is made of a polycarbonate; and a bonding layer which is formed from a silane coupling agent having a glycidyl group and by which the first member is bonded to the second member.

A sheet metal stack (3) and a method for sealing at least one liquid channel (2) in this sheet metal stack (3) are shown. For high reproducibility, it is proposed that a first liquid fluid (6) comprising silane is introduced into the at least one liquid channel (2), that this first liquid fluid (6) is held in the liquid channel (2) under a first pressure (p1) for a first holding time and is then discharged from the liquid channel (2), in particular by blowing, and subsequently that a second liquid fluid (8) containing at least one amino group is introduced into the at least one liquid channel (2).

Method for forming an adhesive bond between two components (5, 13) comprising the following process steps: - Providing a first component (5) with a metallic surface (10), wherein at least a part of the surface (10) is designed as a contact surface (12) for a second component (13), - Providing a laser (20) that can be focused onto the mounting surface (12), - Processing a partial area (20, 21; 20', 21'; 20", 21") of the mounting surface (12) with the laser (20) by moving the laser focus over the partial area (20, 21; 20', 21'; 20", 21") and briefly melting it in the area of ​​the laser focus, so that the partial area (20, 21; 20', 21'; 20", 21") is roughened, - Applying an adhesive at least to the processed partial surface (20, 21; 20', 21'; 20", 21"), - Attaching the second component (13) to the contact surface (12) so that it rests against the first component (5) with a second contact surface (14) under the interposition of the adhesive, - Curing of the adhesive.

The invention discloses a polyurethane sealant primer as well as a preparation method and application thereof, and relates to a primer as well as a preparation method and application thereof. The invention aims to solve the problems that the existing single-component polyurethane sealant has low bonding strength on aviation organic glass and cannot meet the bonding sealing of helicopter cabin organic glass and crack arrest of cabin cover organic glass. The primer is prepared from a T100 prepolymer, an MDI and TPTI mixed isocyanate prepolymer, 4-toluenesulfonyl isocyanate, a catalyst, butanone, carbon black and methanesulfonic acid. The method comprises the following steps: 1, preparing a mixed isocyanate prepolymer of MDI and TPTI; and 2, preparing the polyurethane sealant primer. According to the application, the adhesive is applied to bonding sealing of helicopter cabin organic glass and crack arrest of cabin cover organic glass. The invention provides the polyurethane sealant primer as well as the preparation and the application thereof.

The present disclosure is directed to a bonded structure comprising: a first substrate provided with a first electrically conductive surface; a second substrate provided with a second electrically conductive surface; and, an adhesive interposed between said first and second electrically conductive surfaces, wherein at least one of said first and second electrically conductive surfaces is provided by a dried ink film comprising: a matrix of a polymeric resin (FR); and, electrically conductive particles, further wherein said adhesive is electrochemically debondable and is obtained by applying a curable liquid-state composition to at least one of said first and second electrically conductive surfaces followed by the curing of said composition, wherein the curable composition comprises a non-polymerizable electrolyte and a polymeric resin (AR).

The present invention provides a novel tetrazole compound, a method for synthesizing the same, and a coupling agent. A tetrazole compound according to the present invention is represented by chemical formula (I). In chemical formula (I), R1 and R2 are the same or different and represent a hydrogen atom or a group represented by -(CH2)m-Si(OR)3−p(OH)p, where R represents a methyl group or an ethyl group, m represents an integer of 1-18, and p represents an integer of 0-3. X represents a phenylene group, -NH-, or -(CH2)n-, and n represents an integer of 0-12. However, R1 and R2 are not simultaneously hydrogen atoms.

The instant invention concerns the use of a composition comprising a polymer P obtained by radical copolymerization of a mixture of (i) acrylic acid; (ii) optionally methacrylic acid; and (iii) at least one compound being an ethylenically unsaturated polycarboxylic acid, for improving the bonding between a metallic surface (S1) and another surface (S2) through an adhesive layer, in particular, in order to impart a resistance to the adhesive failure to the resulting bonding.

The invention relates to a composite coupling agent and application thereof in enhancing the peel strength of a copper foil. The coupling agent is a compound capable of enhancing the interaction between the high polymer material and the inorganic filler so as to achieve the functions of enhancing interface adhesion, improving or enhancing the performance of the composite material and the like, and when the coupling agent is used in the production of the copper foil, a layer of protective film can be formed on the surface of the copper foil to increase the oxidation resistance, and the anti-stripping strength of the copper foil can also be improved. According to the composite coupling agent provided by the invention, the phosphate coupling agent and the borate coupling agent are mixed in the silane coupling agent to generate a synergistic effect with the silane coupling agent, so that the anti-stripping strength of the copper foil is remarkably enhanced.

The invention relates to the technical field of adhesive stickers, in particular to a production process of an environment-friendly PP synthetic paper transparent PET bottom adhesive sticker composite material. The non-setting adhesive composite material produced by the invention overcomes the problem that the non-setting adhesive is poor in thermal aging resistance and ultraviolet aging resistance. Adding tetrapod-shaped zinc oxide whiskers treated by chenodeoxycholic acid and polyarylsulfone treated by carboxymethyl cellulose to obtain PP synthetic paper; the adhesive layer is obtained by reacting polyurethane, acrylate and the flexible group; the adhesive sticker composite material is obtained by blade-coating the prepared adhesion promoter on the single surface of the PP synthetic paper, then compounding the PP synthetic paper with the isolating layer and the adhesive layer, and finally performing hot-pressing compounding on the PP synthetic paper and the etched transparent PET bottom. After being subjected to thermal aging and ultraviolet aging, the adhesive sticker composite material is good in stripping performance and high in adhesive property.

The invention discloses a thermoplastic composite material, a glued workpiece and a preparation method of the glued workpiece, and relates to the field of composite materials. According to the method, the coating is formed at the to-be-bonded position of the thermoplastic composite material, so that the bonding force between the materials during bonding is greatly improved, and the coating has relatively strong bonding force with the adhesive and the surface of the thermoplastic material. Experimental results show that the thermoplastic composite material bonded by the method provided by the invention is high in bonding capacity, and the single-lap shear strength is improved by more than 50% compared with that of a thermoplastic composite material without a coating.

A molded seat cushion is adapted for receiving a seat cover by providing an adhesive on either or both of a flexible fastener sheet and a selected area of a molded foam cushion surface, positioning the flexible fastener sheet to cover the selected area, and allowing the adhesive to set to permanently bond the flexible fastener sheet over the selected area of the molded foam cushion surface. The selected area features a three-dimensional contour that the flexible fastener sheet follows as bonded. A related flexible fastener product has a non-woven textile sheet and a resin layer secured to the textile sheet and carrying an array of discrete male touch fastener elements. The resin layer includes multiple parallel strips of resin, each resin strip carrying respective touch fastener elements, with each pair of adjacent strips separated by an exposed lane of the non-woven textile sheet.

The invention relates to a method for sealing a substrate, comprising at least steps 1) and 3), by applying at least part of a solvent-based composition to a surface of the substrate to at least part form a film (1) on said surface, applying at least part of a sealant composition to the film obtained after step 1) to form a sealant film (3), wherein the sealant composition is obtainable by mixing at least two components A) and B) of a sealing system, which are present separately, with one another, the solvent-borne composition applied in step 1) comprising at least one aliphatic hydrocarbon as an organic solvent component a1) in an amount of at least 70.0 wt.-%, based on the total weight of the composition, at least one organometallate as component a2) in an amount of at least 70.0 wt.-%, based on the total weight of the composition, the present invention relates to a method for preparing a solvent-borne composition comprising at least one metal acid salt, the metal of which is selected from Ti and Zr, and at least one organosilane as component a3), sealing substrates obtainable by this method, the use of this solvent-borne composition as an adhesion promoting composition, the solvent-borne composition itself, and a kit comprising said solvent-borne composition.

The present invention is a laser release composition comprising a compound (I) having a hydroxyphenyltriazine skeleton with a maximum absorption wavelength (Amax) in a wavelength range of 300 nm to 500 nm. Thus, the present invention provides a laser release composition configured to facilitate bonding between a support and a substrate, enable a heavily stepped substrate to be formed with a uniform film thickness, exhibit high compatibility with steps of forming a TSV and forming a wiring on the back surface of a wafer, have excellent resistance to wafer thermal processing such as chemical vapor deposition (CVD), allow for facile peeling of the substrate from the support, and enable removal of resin without contaminating the substrate, thereby enhancing the productivity of thin substrates.

Thermoplastic primer compositions may include a high surface energy thermoplastic resin having a surface energy of 37 dynes / cm or greater, at a percent by weight (wt %) of 55 wt % to 90 wt %; a low surface energy thermoplastic resin having a surface energy of less than 37 dynes / cm, at 10 wt % to 45 wt %; wherein the thermoplastic primer composition has a glass transition temperature in the range of 60° C. to 120° C. Multilayer compositions may include a substrate having a surface energy of 37 dynes / cm or greater; a primer layer containing a thermoplastic primer composition; and one or more thermoset adhesive layers.

The present invention relates to a method of sealing a substrate comprising at least steps 1) and 3), namely applying a solventborne composition at least in portion onto a surface of a substrate to form a film at least in portion on said surface (1)), applying a sealant composition at least in portion onto the film obtained after step 1) to form a sealant film (3)), wherein the sealant composition is obtainable by mixing at least two separately present components A) and B) of a sealing system with each other, wherein the solventborne composition applied in step 1) comprises at least two different alcohols as organic solvents as constituent a1) in an amount of at least 85.0 wt.-%, based on the total weight of the composition, at least one organic metalate as constituent a2), the metal of the metalate being selected from Ti and Zr, and at least one organosilane as constituent a3) in an amount of at most 10.0 wt.-%, based on the total weight of the composition, a sealed substrate obtainable by the method, a use of the solventborne composition as adhesion promoting composition, the solventborne composition per se, and a kit-of-parts comprising said solventborne composition.

To provide a surface-treated metal material used for adhesive joining and capable of further improving adhesive durability, and a joined body including the surface-treated metal material. A surface-treated metal material includes: a metal base material; and a silane film provided on at least a part of a surface of the metal base material, in which a surface of the silane film has an absorption peak in a wave number region of 1250 (cm-1) or more and 1150 (cm-1) or less in a case where parallel polarized light having an incident angle of 75° is incident and an absorption spectrum is measured by Fourier transform infrared spectroscopy, and the surface of the silane film has an aspect ratio of 0.5 or more in a case where a surface roughness is measured using a laser microscope in a measurement range of 1 mm × 1 mm at any three positions.

A composition in the form of a solution or dispersion comprising an anhydride-modified polyolefin, an anhydride-modified styrene block copolymer, and an isocyanate-containing crosslinker, wherein the anhydride-modified polyolefin and the anhydride-modified styrene block copolymer are present in a combined amount of 7 wt% to 18 wt% of the composition, the weight ratio of the anhydride-modified polyolefin to the anhydride-modified styrene block copolymer being in the range of 2:1 to 6:1, the weight ratio of the combined anhydride-modified polyolefin and the anhydride-modified styrene block copolymer to the isocyanate-containing crosslinker being in the range of 0.2:1 to 0.5:1, and the solvent includes a ketone as a first solvent and an alkylbenzene or alkane solvent. The composition can be used for bonding TPO to TPU, polyester, or PU. The composition can be used for bonding a first TPO component or coating to a second TPU, polyester, or PU component by applying heat and, optionally, pressure, and the resulting adhesion improves peel strength.

A primer composition includes a solvent, a conductive filler dispersed in the solvent, and a polymer in at least one state dissolved or dispersed in the solvent. The polymer includes at least one of polyurethane, polyacrylate, polyamide, or rubber. An adhesive system comprises an electrically conductive composition and an electrodebonding adhesive comprising an ionic liquid. The use of the primer composition as a primer on a non-conductive substrate in combination with an electrodebonding adhesive is also described. A method of making a bonded article and an article bonded with the adhesive system disclosed herein and / or made by the method disclosed herein are also described.

The present invention relates to a primer composition that is soluble in cutting oil while being free of organic solvents. The primer composition when combined with an acrylic-based adhesive composition has high tensile strength and quick fixture times and is particularly useful on low surface energy or inactive metal substrates such as C5 electrical steel coated substrate. The primer composition includes a nitrogen-containing compound, a copper-based catalyst, and one or more monomer components, the monomer components including a mixture of hydroxypropyl methacrylate (HPMA) and 3,3,5-trimethylcyclohexyl methacrylate (TMCHMA).

A composition for forming a coating film for removing foreign matters, the composition being capable of forming a coating film that can be removed by a removal liquid and containing a solvent and a polymer containing a structure represented by formula (1). [In formula (1), R1 represents a hydrogen atom, a protecting group of an imide group that can be deprotected by a base, or a protecting group of an imide group that can be deprotected by an acid, and * represents a bond. ] # imgabs0 #

The present invention relates to a method of sealing a substrate comprising at least steps 1) and 3), namely applying a solventborne composition at least in portion onto a surface of a substrate to form a film at least in portion on said surface (1)), applying a sealant composition at least in portion onto the film obtained after step 1) to form a sealant film (3)), wherein the sealant composition is obtainable by mixing at least two separately present components A) and B) of a sealing system with each other, wherein the solventborne composition applied in step 1) comprises at least one aliphatic hydrocarbon as organic solvent constituent a1) in an amount of at least 70.0 wt.-%, based on the total weight of the composition, at least one organic metalate as constituent a2), the metal of the metalate being selected from Ti and Zr, and at least one organosilane as constituent a3), a sealed substrate obtainable by the method, a use of the solventborne composition as adhesion promoting composition, the solventborne composition per se, and a kit-of-parts comprising said solventborne composition.

The invention relates to the technical field of rubber conveying belts, and discloses a method for treating the surface of a rubber conveying belt to enhance adhesive force through low-temperature plasma, and the method comprises the following steps: guiding a to-be-treated rubber conveying belt into a plasma treatment chamber, according to the method, in-situ activation is carried out on the surface of the rubber conveying belt by utilizing non-equilibrium low-temperature plasma, and a composite interface with high-density polar functional groups and a nanoscale topological structure is constructed on the surface layer of the rubber by accurately regulating and controlling physical and chemical parameters of the non-equilibrium plasma; the internal conflict of'activity improvement 'and'strength maintenance' in the traditional method is fundamentally solved; the method has the remarkable advantages of being high in process controllability, high in environmental friendliness, wide in applicable material range, good in compatibility with an existing production line and the like, and the strict interface performance requirement of the modern heavy industry for the high-reliability and long-service-life rubber conveying belt can be met.

The application provides a modified polyurethane primer and a preparation method thereof. The preparation raw material of the modified polyurethane primer comprises 15-25 parts of tackifying resin, 15-25 parts of crosslinking resin, 5-9 parts of pigment carbon black, 0.5-1.0 part of catalyst and 50-60 parts of solvent, the tackifying resin is obtained by the reaction of first polyester diol, diisocyanate and hydroxyl-terminated organic silicon modified rosin-based end-capping agent, the hydroxyl-terminated organic silicon modified rosin-based end-capping agent is obtained by the reaction of epoxy silane and rosin, and the crosslinking resin is obtained by the reaction of triisocyanate, second polyester diol and polyamino silane. The modified polyurethane primer provided by the application has excellent initial adhesion performance under low temperature (about 0 DEG C) conditions, meanwhile, the primer has the characteristics of strong adhesion, excellent storage stability, good durability, wide substrate adaptability and the like, is very suitable for use in cold winter environment, and can obviously shorten the fixture removal time of a main engine factory and the fast driving-off time in the after-sales market.

The present invention relates to the technical field of ceramics, and proposes a surface jointing process and equipment for gemstones and purple sand. The surface jointing equipment for gemstones and purple sand includes an angle grinder and a brazed diamond grinding wheel; in the surface jointing process for gemstones and purple sand, after the joint surfaces of the gemstones and purple sand are polished by the equipment, the gemstones are bonded to the purple sand using an adhesive. The present invention also proposes an adhesive, which comprises the following components in parts by weight: 30-50 parts of epoxy resin, 10-15 parts of N-methylolacrylamide, 5-10 parts of phenolic resin, 10-15 parts of quartz powder, 10-20 parts of ethanol, 4-7 parts of curing agent, and 0.1-0.5 part of silane coupling agent. Through the above technical solution, the problems in the prior art that there are a large number of gaps around the inlay and poor bonding effect in the surface inlay of purple sand products are solved.

The invention relates to a method for joining two components (12, 14) by means of a double-sided adhesive tape (20; 20a; 20b; 20c) to form a component assembly (10; 10a; 10b; 10c), in which the two components (12, 14) are pressed against each other in the region of oppositely arranged joining surfaces (13, 15; 52) of the components (12, 14) with the adhesive tape (20; 20a; 20b; 20c) interposed.