23 results about "Adhesive system" patented technology

The invention relates to adhesive systems for lignocellulosic composite materials comprising a) a primer composition, b) an NCO-containing adhesive composition.

This invention relates to the field of adhesive technology, and discloses a formaldehyde-free adhesive system and a method for preparing plywood using the same. The formaldehyde-free adhesive system includes component A and component B, which are applied to the surface of a substrate, respectively. Component A is an isocyanate adhesive, and component B includes an acrylic copolymer emulsion with a glass transition temperature (Tg) of 100℃ ≤ Tg ≤ 125℃. Applying components A and B to the substrate surface separately improves the ease of application and the synergistic effect of the two components at the bonding interface. The high-Tg acrylic copolymer emulsion in component B has good adhesion and water resistance, effectively covering and filling defects on the substrate surface, especially burrs and grooves, and synergistically improving bond strength and water resistance with the isocyanate adhesive. Plywood prepared using the adhesive system of this invention has low formaldehyde release, high bond strength, and excellent resistance to immersion peeling.

A method for preparing flame-retardant surface-layer oriented strand board (OSB) based on interfacial penetration anchoring is provided, comprising: stirring long wood shavings and an acidic adhesive system composed of 1,6-hexanediamine aqueous solution, 2-hydroxyphosphonic acid-acetic acid aqueous solution, and diphenylmethane diisocyanate in a mixer under the condition of hot air flow; discharging the material when the pH value of the shaving surface reaches 4.0-6.0 to obtain pretreated surface-layer large shavings; mixing copolymer CS-H-H, wood fines, and diphenylmethane diisocyanate; discharging the material when the pH value of the wood fines reaches 7.7-8.5 to obtain pretreated core-layer fines; the reaction formula for preparing copolymer CS-H-H is as follows; laying the pretreated material in the order of surface-layer large shavings, core-layer fines, and surface-layer large shavings as the lower surface layer, core layer, and upper surface layer, and performing a hot-pressing process. This solves the problems of low interlayer bonding strength and easy corrosion of metal connectors in previous fine-grain core-layer OSBs.

Elastomeric article (1) with - a rubber matrix (2) as well as - components (3) vulcanized into and / or onto the rubber matrix (2), in particular reinforcing elements, - an adhesive system by which the vulcanized and / or bonded components (3) are connected to the rubber matrix (2), characterized in that the article (1) has an adhesive system which has the following features, namely before vulcanization - components coated with adhesion promoter to be vulcanized in and / or onto the skin (3), - a raw rubber matrix (2) surrounding the components (3) to be vulcanized in and / or onto the adhesive layer (4), - Nanotetrapods (5) embedded in the adhesion promoter layer (4), which protrude from the adhesion promoter layer (4) with at least several arms (6) and engage in the surrounding raw rubber matrix (2), wherein, after vulcanization, the components (3) to be vulcanized in and / or onto are firmly connected to each other both by the chemical bond formed during vulcanization and by the form-fitting interaction of the nanotetrapods (5) with the surface of the components (3) to be vulcanized in and / or onto and the rubber matrix (2), characterized in that the elastic article (1) is an air spring bellows or a vehicle pneumatic tire or a power transmission belt or a conveyor belt or an elastic membrane or an elastic fluid line.

This invention provides a multifunctional adhesive and method for rapid sealing of floating photovoltaic (PV) bodies on water surfaces, comprising the following components and their mass ratios: epoxy resin: 100 parts; polyether: 20–30 parts; curing agent: 50–70 parts; plasticizer: 4–6 parts; filler: 5–10 parts; UV-resistant additive: 0.05–0.1 parts; antioxidant: 1–5 parts. The adhesive system provided by this invention has a faster curing speed and simpler construction process compared to ordinary sealing agents, enabling rapid emergency sealing, convenient construction, and adaptability to on-site conditions. Furthermore, it exhibits excellent adhesion to HDPE blow-molded substrates, is water-resistant and immersion-resistant, provides long-lasting sealing, is weather-resistant and anti-aging in outdoor applications, and has a long service life.

The application discloses a PE adhesive and a gluing process, and belongs to the technical field of adhesives. The PE adhesive comprises chitosan, tannic acid and phenylboronic acid grafted polyethylene, and the mass ratio of the chitosan, the tannic acid and the phenylboronic acid grafted polyethylene is 10:3-4:10-12. The chitosan is added into an acetic acid aqueous solution, stirred and dispersed at 50-65 DEG C to obtain a chitosan solution, tannic acid is added and continuously stirred to obtain a mixed chitosan-tannic acid blend, and the phenylboronic acid grafted polyethylene is added, uniformly mixed, cast into a film, dried, and the PE adhesive is obtained. The application realizes the comprehensive advantages of convenient storage and transportation, process matching, interface strengthening, tough adhesive layer, green environmental protection and controllable cost through the synergistic combination of the phenylboronic acid grafted polyethylene, the chitosan and the tannic acid and the process of dry film preforming, water wetting in-situ activation and hot pressing rapid curing. After hot pressing and curing, the adhesive system can form a firm adhesive layer resistant to boiling water.

This invention relates to the field of functional engineered wood products, specifically to an engineered wood product with ultra-long room-temperature phosphorescence characteristics. The engineered wood product includes bonded units and an adhesive layer located between adjacent bonded units. The adhesive layer is formed by an adhesive that, upon curing, can generate room-temperature phosphorescence. Under external light excitation, the adhesive layer can generate ultra-long room-temperature phosphorescence emission, and the emission signal includes at least one of the following: emission color, emission intensity, emission spectrum, delayed emission image, and / or phosphorescence lifetime. The bonded units are selected from at least one of the following: decorative paper, thin wood veneer, engineered wood veneer, wood veneer, wood / bamboo strips, wood / bamboo shavings, wood / bamboo fiber, straw, and biomass fragments. By adjusting the adhesive system, interface structure, and hot-pressing process parameters, the resulting engineered wood product can exhibit different room-temperature phosphorescence characteristics. This invention endows the board with stable room-temperature phosphorescence function without changing the basic manufacturing process of existing engineered wood products, possessing good process compatibility and application prospects. The room-temperature phosphorescence signal can construct material-level optical coding information, realizing the identification and anti-counterfeiting traceability of the engineered wood product.

The application discloses a preparation method of tackifying flame-retardant organic silicon pressure-sensitive adhesive, which comprises the following steps: synthesizing an organic silicon tackifier MQ-ETMS through a silicon-hydrogen addition reaction between a vinyl trimethoxysilane coupling agent and a methyl hydrogen-containing silicon resin; and preparing a flame retardant K-ADP by wet modification of an aluminum diethyl phosphinate containing an ethylenic bond, wherein the prepared organic silicon tackifier and the flame retardant are introduced into an organic silicon pressure-sensitive adhesive system, and then high-performance organic silicon pressure-sensitive adhesive tape is prepared through blending, coating, solvent evaporation and heating crosslinking. The tackifier synthesized by the application is rich in methoxy functional groups, which enhances the interaction between the organic silicon pressure-sensitive adhesive and the surface of the adherend. Meanwhile, the aluminum diethyl phosphinate containing an ethylenic bond is surface-modified by using the ethylenic bond-containing silane coupling agent, so that the dispersion problem of traditional flame retardants added in the organic silicon pressure-sensitive adhesive is solved, and the adhesion and flame retardation of the organic silicon pressure-sensitive adhesive are improved.

This invention provides a phosphate-based adhesive and its preparation method, belonging to the field of inorganic adhesives. The invention involves mixing a phosphoric acid solution with an aluminum source for an acid-base neutralization reaction to obtain a neutralized product; mixing the neutralized product with a trivalent metal halide for a metathesis reaction to obtain the phosphate-based adhesive; and providing a curing agent to obtain the phosphate-based adhesive. This invention incorporates heteroions into the aluminum phosphate adhesive system in the form of trivalent metal halides, eliminating the need for a reduction reaction and allowing direct use of the trivalent metal. The preparation method is simple, efficient, and easily scalable for industrial production. Furthermore, this invention limits the trivalent metal halide to one or more of chromium halides, iron halides, scandium halides, iridium halides, lanthanum halides, ruthenium halides, osmium halides, gallium halides, and molybdenum halides, expanding the range of heteroions and eliminating the need for highly toxic chromium trioxide, thus improving the safety of the preparation method.

The primer composition comprises a polyacrylate dissolved in an organic solvent. The polyacrylate comprises at least 20% by weight of methyl methacrylate units, at least 15% by weight of monomer units comprising at least one of secondary amines, tertiary amines, or tertiary amides, at least 15% by weight of acrylic monomer units comprising an alkyl group having at least 4 carbon atoms, and 0.5 to 10% by weight of acrylic monomer units comprising a carboxylic acid group. The adhesive system comprises the primer composition and an adhesive tape. A method for producing the bonded article is also described.

This invention relates to a method for preparing a wide-temperature-range responsive pyrolytic adhesive pressure-sensitive adhesive and tape. The aim is to design and propose a method for preparing the pyrolytic adhesive tape while ensuring both protective and debonding performance. This invention achieves a balance between the pyrolytic adhesive tape's pyrolytic bonding temperature range, pyrolytic bonding time, and pyrolytic peel force by adjusting the expanded microsphere system in the adhesive system and introducing microcrystalline polymers and special resins. The advantages of this invention are the combined use of different expansion temperatures and amounts of expanded microspheres, and the synergistic effect of microcrystalline polymers and special resins, thereby achieving a perfect balance between the temperature response range and adhesive strength of the pyrolytic adhesive tape. This method utilizes the combination of these materials to prepare a wide-temperature-range responsive pyrolytic adhesive pressure-sensitive adhesive and tape.

The primer composition comprises a polyacrylate dissolved or dispersed in water. The polyacrylate comprises at least 20% by weight of methyl methacrylate units, at least 15% by weight of monomer units comprising at least one of secondary amines, tertiary amines, or tertiary amides, at least 15% by weight of acrylic monomer units comprising an alkyl group having at least four carbon atoms, and 2.5% to 10% by weight of acrylic monomer units comprising a carboxylic acid group. The primer composition comprises a polymer dispersed in water and a solvent, wherein water accounts for 50% by weight or more of the primer composition, and the solvent comprises at least one of propylene carbonate, polyol, polyol ether, polyol ether ester, or dibasic acid ester. The adhesive system comprises the primer composition and an adhesive tape. Furthermore, a method for producing the bonded article is also described.

The present invention relates to a biopolymer adhesive system where its parts contain bio-based components and a method of separately applying said parts of the biopolymer adhesive system, wherein the viscosity and distance between the parts are specified to certain parameters when applying onto substrate and usage thereof.

This invention relates to the field of composite packaging materials and surface decoration processing, and discloses a hot stamping and printing composite process for a hollow board filled with coated paper, comprising the following steps: S1, local filling reinforcement; S2, surface microstructure forming; S3, surface activation pretreatment; S4, setting a layered adhesive structure; S5, lamination; S6, curing and leveling; S7, hot stamping printing. This invention achieves a sequential division of labor between positioning during lamination and buffering during hot stamping by utilizing the softening point difference and temperature window of the layered adhesive. It balances positioning accuracy during lamination and stress buffering during hot stamping within the same adhesive system. The co-positioning of local filling and surface microstructure further improves pressure uniformity and displacement limitation. These three elements construct a synergistic protection system of rigid support, physical interlocking, and thermal stress buffering, enabling the composite structure to simultaneously possess interfacial bonding strength, pressure uniformity, and positional stability.

The application discloses a multifunctional anticorrosion coating for marine harsh corrosive environment and a preparation process thereof. The anticorrosion coating adopts a three-layer composite structure of "adhesive layer-barrier layer-surface functional layer", and is composed of an adhesive layer material, a barrier film, a surface functional layer material and a carrier. The adhesive layer takes acrylic resin as a core, and adds components such as surface modified titanium dioxide and isocyanate curing agent to form an adhesive system with high adhesion and corrosion resistance; the barrier layer is a plasma modified polyvinylidene fluoride barrier film; and the surface functional layer takes fluorocarbon modified emulsion as a matrix, and is compounded with nano cuprous oxide, functional ceramic powder and anti-aging additives to provide anti-pollution, anti-corrosion and anti-ultraviolet functions. The application solves the technical limitations of single protection function and complex process in the prior art. The anticorrosion coating is suitable for marine harsh environments with high salt fog, high humidity and strong ultraviolet, and provides a long-acting anticorrosion solution with simple process and comprehensive performance for offshore wind power and other infrastructures.

This invention relates to the field of adhesive technology, and discloses a formaldehyde-free adhesive system and a method for preparing plywood using the same. The formaldehyde-free adhesive system includes component A and component B, which are applied to the surface of a substrate, respectively. Component A is an isocyanate adhesive, and component B includes terminal epoxy-based silicone. By applying the isocyanate adhesive and terminal epoxy-based silicone as components A and B to the substrate surface, respectively, the terminal epoxy-based silicone can improve the wetting, penetration, and interfacial bonding of the substrate surface, especially in defective areas such as burrs and grooves, in a relatively independent manner. It also forms a stable adhesive interface with the isocyanate adhesive, thereby significantly improving the bonding strength and impregnation peel performance of the plywood. Simultaneously, this adhesive system does not introduce formaldehyde-containing adhesives, which helps maintain a low formaldehyde release level in the plywood.

The application relates to a water-based low-temperature-resistant thermoplastic polyacrylate adhesive emulsion, a preparation method and application thereof, and the method comprises the following steps: dissolving an emulsifier and a pH buffer in water to obtain an aqueous phase solution; dissolving a polymerizable supramolecular functional monomer with a strong quadruple hydrogen bond unit based on UPy in a mixed solution composed of conventional monomers, monomers with a weak double hydrogen bond unit and a chain transfer agent to obtain an oil phase solution; adding the aqueous phase solution into the oil phase solution for pre-emulsification to obtain a coarse emulsion; performing ultrasonic treatment on the coarse emulsion to obtain a monomer fine emulsion; adding a water-soluble initiator into the monomer fine emulsion, and performing emulsion polymerization at 50-90 DEG C. The application aims to construct a thermoplastic polyacrylate adhesive system through strong and weak hierarchical hydrogen bond synergy and a fine emulsion polymerization process, so as to realize high bonding strength, wide temperature resistance and multiple cycle reusability in an extreme low-temperature environment.

This technology relates to systems and methods for high-stiffness substrate integration in semiconductor packaging. In one embodiment, the technology provides an apparatus comprising a substrate including a first metallic material and a first layer coupled to the substrate. The apparatus further includes a second layer coupled to the substrate via the first layer. The second layer comprises an organic material. The first layer comprises: a third layer including a first adhesive material configured to couple to the organic material; a fourth layer including a second adhesive material; and a fifth layer including a third adhesive material configured to couple to the first metallic material. This multilayer adhesive system achieves reliable bonding between organic and metallic components, thereby ensuring robust mechanical and electrical performance of the system. Other embodiments also exist.

The application discloses a kind of bionic adhesive polymer modified asphalt and its preparation and application, preparation method includes the following steps: S1. obtain the bionic adhesive polymer obtained by condensation of phenylpropyl copolymer and dopamine;S2. with the bionic adhesive polymer, matrix asphalt as raw material, carries out external mixing method treatment, namely bionic adhesive polymer modified asphalt;Bionic adhesive polymer in the application is phenylpropyl copolymer as rigid main chain, dopamine is as functional branch, with high interface binding force and environmental adaptability, the obtained bionic adhesive polymer can be with asphalt matrix in asphalt-aggregate interface directional construction " non-covalent bond-covalent bond synergistic effect " multiple adhesive system, realize in high temperature or high humidity conditions, super strong adhesion between asphalt and aggregate interface, and then improve the water erosion resistance of modified asphalt.

The application relates to a double-sided glue coating system for a substrate, which comprises a first glue coating component for coating glue on the upper surface of the substrate; a release material coating component for receiving the substrate after the upper surface of the substrate is coated with glue, coating release material on the upper surface of the glue layer to prevent air, dust and moisture, and protect the glue layer from being scratched or adhered; a second glue coating component for receiving the substrate after the upper surface of the substrate is coated with release material, coating glue on the lower surface of the substrate; a film coating component for receiving the substrate after the glue is coated on the lower surface of the substrate, coating release film on the lower surface of the substrate to prevent air, dust and moisture, and protect the glue layer from being scratched or adhered; and a power component for receiving the substrate after the lower surface of the substrate is coated with release film, applying traction to the substrate to keep the substrate moving at a constant speed, realizing continuous glue coating on the upper and lower surfaces of the substrate, without turning over or interrupting the process, and significantly improving production efficiency.

This specification provides a peelable adhesive system.