292results about "Polyether adhesives" patented technology

The invention discloses an electrolytic adhesive, an electrolytic cotton adhesive tape and a preparation method of the electrolytic adhesive. The electrolytic cotton adhesive tape comprises the following components in parts by weight: 5-10 parts of 1, 1 '-ferrocene diformyl chloride, 10-15 parts of acrylic acid beta-cyclodextrin ester, 3-8 parts of polyethylene glycol diglycidyl ether, 10-20 parts of ionic liquid, 1.5-3 parts of a cross-linking agent, 10-15 parts of tackifying resin and 0.5-1.5 parts of an initiator, and a polymer matrix comprises an acrylic acid-hydroxypropyl acrylate copolymer and acrylic acid-2-ethylhexyl ester. Comprising an adhesive layer and an adhesive tape base layer, the adhesive layer is prepared from the electrolytic adhesive, and the adhesive tape base layer is prepared from acrylic foam; the obtained electrolytic cotton adhesive tape has high initial adhesion and viscosity strength after power-on and power-off re-adhesion.

The invention relates to the technical field of adhesives, and provides a high-thermal-conductivity modified silane polyether adhesive and a preparation method thereof.The silane-terminated polyether sealant is prepared from silane modified polyether resin, modified filler, a flame retardant, a silane coupling agent, a catalyst, an antioxidant and a water removal agent; the modified filler is obtained by grafting a hydroxylated AlN filler or a hydroxylated BN filler or a hydroxylated AlN and hydroxylated BN compound filler with silane under the catalysis of a weak acid to form a Si-O-Al or / and Si-O-B covalent bond network, and then mixing the Si-O-Al or / and Si-O-B covalent bond network with nano silicon dioxide particles of which the surfaces are coated with polydopamine. Through a multi-dimensional filler modification technology and reasonable matching of other auxiliaries, the problem of synergism of heat conduction, flame retardance and mechanical properties of the MS adhesive under a high filling system is solved, and the material is suitable for a new energy power battery module.

The invention provides bio-based MS base resin, bio-based MS glue and a preparation method of the bio-based MS base resin and the bio-based MS glue, and belongs to the technical field of high polymer materials. The MS base resin is isocyanate group silane terminated bio-based polyether polyol or polyether polyol subjected to chain extension. The polyether polyol is selected from one or more of bio-based polyethylene glycol, bio-based polypropylene glycol, bio-based poly (trimethylene ether glycol) and bio-based polytetrahydrofuran ether glycol. And mixing the bio-based MS base resin, the plasticizer, the filler, the catalyst III, the coupling agent and the auxiliary agent, and stirring under a vacuum condition to obtain the bio-based MS adhesive. The bio-based MS adhesive prepared by the invention is high in bio-based material content, uncomplicated in preparation process and low in energy consumption, and meanwhile, an adhesive body is good in mechanical property, high in stability and good in high temperature resistance and humidity and heat resistance.

This easily dismantlable adhesive sheet (100) comprises an adhesive layer (10) containing a moisture-cured product of a silyl group-containing resin and a terpene phenolic tackifying resin, wherein the silyl group-containing resin has a polyoxyalkylene structure in a main chain, has, in a portion of the main chain or a side chain, both bonds among a urethane bond and a urea bond or one bond among the urethane bond and the urea bond, and has hydrolyzable silyl groups represented by formula (1) at both ends of the main chain. (In formula (1), X1 and X2 are each independently a hydroxy group or an alkoxy group, R is a C1-C20 alkyl group, and * is a bonding position.)

The invention discloses a silane modified polyether sealant and a preparation method thereof, and belongs to the technical field of sealants. The sealant is prepared from the following raw materials in parts by mass: 80 to 100 parts of MS prepolymer, 1 to 3 parts of silane coupling agent, 10 to 20 parts of plasticizer, 10 to 30 parts of polydopamine modified boron nitride, 40 to 60 parts of nano calcium carbonate, 0.3 to 0.5 part of dibutyltin dilaurate, 0.1 to 0.4 part of light stabilizer and 0.5 to 1 part of ultraviolet absorbent. Wherein the MS prepolymer is obtained by carrying out hydrosilylation reaction on modified allyl-terminated polyether and hydrogen-containing silane, and a side chain of a molecular chain of the modified allyl-terminated polyether contains a benzoic acid structure. A rigid unit with an aromatic ring structure and polar carboxyl are introduced into a polyether long-chain side chain of silane modified polyether to form an MS prepolymer, and the MS prepolymer and polydopamine modified boron nitride have a synergistic effect, so that the sealant is endowed with high hardness and good flexibility.

To provide an adhesive composition which gives a cured product excellent in low dielectric characteristics and heat resistance and also excellent in adhesiveness to a resin and a metal.SOLUTION: As a result of intensive studies, the inventors have found that the problem can be solved by an adhesive composition which contains a component (A): a resin obtained by converting terminals of a bifunctional polyphenylene ether resin to vinyl groups, a component (B): a maleimide compound having two or more maleimide groups in one molecule, a component (C): an acid-modified styrenic elastomer, and a component (D): an isocyanate compound having two or more isocyanate groups in one molecule in a specific ratio.SELECTED DRAWING: None

This invention provides an adhesive sheet for filling adhesive and its application. The adhesive sheet is formed by rolling and laminating a PET film, a first adhesive layer, a prepreg, a second adhesive layer, and a PET film in sequence. The prepreg has a minimum melt viscosity of 3000-10000 Pa·s between 60 and 160°C. The first and second adhesive layers each have a minimum melt viscosity of 300-2000 Pa·s independently between 60 and 160°C. This invention, by setting highly fluid adhesive layers on both sides of the prepreg with low fluidity, enables the adhesive sheet to have excellent filling capacity in the Z-axis direction, while maintaining low fluidity in the X / Y directions. This results in good uniformity of board thickness after filling and pressing. Furthermore, when applied to thick copper fillers, the adhesive sheet can solve the cracking problem in the inter-line area after multiple reflow soldering processes. The filled and pressed board is also less prone to warping, resulting in high reliability of the printed circuit board when carrying high currents.

This invention provides a phosphorus-containing flame retardant, its preparation method and application, and a resin composition and its application, specifically relating to the field of polymer materials technology. The phosphorus-containing flame retardant provided by this invention achieves an integrated design of the flame-retardant unit and the elastic matrix at the molecular scale by directionally and controllably grafting phosphorus-containing groups M onto the active sites of the polybutadiene soft segments in a styrene-butadiene-styrene block copolymer via covalent bonds. This structure retains the inherent high flexibility, impact resistance, and processing rheological properties of the styrene-butadiene-styrene block copolymer while imparting intrinsic, durable, and uniformly distributed flame-retardant capabilities to the material. Simultaneously, because the phosphorus element is anchored to the polymer backbone / side chain, no small molecule polar impurities are introduced, significantly suppressing dielectric polarization loss and hygroscopicity increases. This provides a structural basis and performance guarantee for the subsequent construction of a high-end thermosetting resin system for copper-clad laminates with low Dk / Df, high Tg, and low CTE.

The present invention pertains to a curable perfluoropolyether adhesive composition that contains: (A) 100 parts by mass of a straight-chain perfluoropolyether compound that has at least two alkenyl groups in one molecule, and that has, in the main chain, a perfluoropolyether structure including a repeating unit represented by —CaF2aO— (where a is an integer from 1-6); (B) in an amount effective for curing, a fluorine-containing organohydrogenpolysiloxane having, in one molecule, at least two hydrogen atoms to which a silicon atom is bonded; and (C) a catalyzing quantity of a hydrosilylation reaction catalyst. The composition does not contain an organic solvent. This configuration makes it possible to provide: a curable perfluoropolyether adhesive composition with which can be achieved a cured product that has excellent heat resistance, weather resistance, water repellency, oil repellency, chemical resistance, solvent resistance, etc., and that is characterized in particular in that voids are not generated on the surface of a coating film in a heating step; and an adhesive and adhesive tape that include said cured product.

The curable adhesive composition for a battery of the present invention is a curable adhesive composition for a battery comprising a hydrolyzable silyl group-containing organic polymer and a thermally conductive filler, wherein a cured product of the curable adhesive composition for a battery has a Shore A hardness of 90 or less and a shear strength of 0.5 to 5 MPa. The present invention is capable of providing a curable adhesive composition for a battery, the composition having good reworkability while having suitable adhesion.

This invention belongs to the field of polymer materials, specifically relating to a low-heat-shrinkage polymeric film for laser drilling and its preparation method. The film comprises modified polyphenylene ether resin, vinyl-containing benzoxazine resin, a specific cationic initiator, a toughening agent, and inorganic modified fillers: gadolinium lanthanum zirconate core-shell nanocrystals and lithium aluminum borosilicate nanowires. The preparation method includes: first, surface-treating the two inorganic fillers with a silane coupling agent and then dispersing them in a solvent to obtain a slurry; then, mixing this slurry with the modified polyphenylene ether resin, vinyl-containing benzoxazine resin, cationic initiator, and toughening agent to form a homogeneous adhesive; finally, coating the adhesive onto a carrier film and drying and curing it at three temperature stages from low to high to obtain the finished film. The film prepared by this method exhibits extremely low heat shrinkage during laser drilling, effectively controlling resin protrusion or indentation defects on the hole wall, and significantly improving the quality and reliability of micropore processing.

To provide a temporary fixing adhesive that has conformability to uneven structures (step conformability), high heat resistance (reflow resistance), and laser peelability, can suppress substrate warping after support peeling, has excellent solvent removal properties, and provides good solderability of component electrodes after removal of the temporary fixing adhesive, and to provide a method for temporarily fixing components and processing methods using the same. [Solution] A temporary fixing adhesive composition comprising a resin (A) and an organometallic compound (B), wherein the resin (A) contains an alcoholic hydroxyl group or a phenolic hydroxyl group, and is a resin whose mass loss rate relative to the mass before heating is 5% at a rate of 10°C / min in an atmospheric atmosphere using thermogravimetric differential thermal analysis, and the film thickness reduction rate (R) after immersion in toluene, cyclohexanone, or N-methylpyrrolidone is 95% or more.

To provide a pressure-sensitive adhesive tape which suppresses the surface contamination of an adherend with foreign matter and is excellent in antistatic performance.SOLUTION: An adhesive tape according to an embodiment of the present invention includes a base material; and an adhesive layer formed of an active energy ray-curable adhesive containing a (meth) acrylic polymer having a radiation-polymerizable carbon-carbon double bond, an ionic liquid, and a photopolymerization initiator.SELECTED DRAWING: Figure 1

The invention relates to a two-component foamable silane-modified polymer composition comprising: a component A comprising (a-1) at least one silane modified polymer, (a-2) at least one aminosilane or aminosilane oligomer, and (a-3) at least one foam stabilizer, (a-4) optionally at least one plasticizer, (a-5) optionally surface treated calcium carbonate, (a-6) optionally surfaced treated silica, (a-7) optionally at least one catalyst, (a-8) optionally at least one wax, a component B comprising (b-1) water, (b-2) at least one hydride organopolysiloxane, preferably at least one poly(methylhydrosiloxane), and (b-3) foam stabilizer, (b-4) optionally at least one plasticizer, (b-5) optionally surface treated calcium carbonate, (b-6) optionally surfaced treated silica, (b-7) optionally at least one phyllosilicate, (b-8) optionally at least one catalyst, (b-9) optionally at least one wax. The invention also relates to a method for preparing a silane-modified polymer foam attached to a part of assembly in situ, comprising the steps: I. preparing a two-component foamable silane-modified polymer composition according to any of claims 1 to 12; II. mixing the component A and component B at a reaction temperature from 15 to 100°C, preferably from 20 to 80°C, to form a reaction mixture; and III. applying the reaction mixture to at least one surface of part; to a silane-modified polymer foam obtained by said method, and to use of said two-component foamable silane-modified polymer composition or said silane-modified polymer foam in gasket, sealant or adhesive.

The invention relates to an assembly comprising a first part and a second part, each part comprising a polymer; and a film located between and adhered to the first part and the second part. The film comprises a blend of at least two poly(ether ketone ketone) (PEKK) polymers and optionally at least one nucleating agent. The assembly has improved fracture toughness and overall good mechanical properties.

The invention provides a weather-resistant high-strength acrylate structural adhesive with long operation time, which is obtained by mixing a component A and a component B, each of the component A and the component B comprises a fluorine-free acrylate monomer, a fluorine-containing acrylate monomer, an acrylate copolymer, an elastic polymer, an impact improver, a stabilizer, a compatibility aid, a filler and color paste, the component A further comprises an oxidizing agent, and the component B further comprises a reducing agent; the acrylate copolymer is a copolymer of a fluorine-free acrylate monomer, a fluorine-containing acrylate monomer and a conventional acrylate monomer, wherein the mole ratio of the fluorine-containing acrylate monomer is not more than 15%. The structural adhesive has the advantages of long operation time and excellent weather resistance, has the high strength performance of the conventional acrylate structural adhesive, and is suitable for various large-area adhesive application scenes and non-automatic adhesive application scenes.

A curable composition that contains a silane compound, a non-tin-based curing catalyst, and an organic polymer having a bifunctional dialkoxysilyl group as a reactive silicon group is provided. The curable composition exhibits quick curability. In the curable composition, an amidine compound and a titanium compound are used in combination as the curing catalyst, and a silane condensate having a specific structure is used as the silane compound.

The invention relates to a two-component thermally conductive composition comprising: a composition (A) comprising: a silylated polymer, and a rheology agent (r1) selected from amide waxes and / or a rheology agent (r2) comprising: from 1% to 40% by weight of a bis-urea (a) obtained by reacting a primary aliphatic amine with a diisocyanate of molar mass less than 500 g / mol, relative to the total weight of the rheology agent (r2), and from 60% to 99% by weight of a specific plasticizer (b), relative to the total weight of the rheology agent (r2), said rheology agent (r2) being in the form of a suspension of solid particles of the bis-urea (a) in a continuous phase of plasticizer (b), and a composition (B) comprising: at least 1% by weight of a filler (C) relative to the total weight of the composition (B), the filler (C) contributing at least 0.0025% by weight of moisture relative to the total weight of the composition (B),Composition (A) and / or composition (B) further comprising at least one thermally conductive filler. The invention also relates to the use of a filler (C) having a specific moisture content for crosslinking, without the addition of free water, a two-component composition, the two-component composition comprising a composition (A) comprising a silylated polymer, and a composition (B) comprising said filler (C). Figure for the abstract: none.

A novel one-part (1K) MS / epoxy hybrid curable composition, comprising: (A) at least one alkoxysilyl-terminated polyether polymer; (B) at least one epoxy-containing alkoxysilane and / or oligomer thereof; (C) at least one moisture curing catalyst; (D) at least one imine group-containing alkoxysilane; and (E) optionally at least one epoxy resin. Also provided herein are a process for preparing the composition, a process for bonding substrates using the composition, an article bonded or sealed using the composition, as well as a cured product and use of the composition. The one-part (1K) MS / epoxy hybrid curable composition can yield a cued product which exhibits an improved tensile strength while maintaining an acceptable elongation property, and can be cured via multiple curing manners.

The objectives are to provide a moisture-curing shoe composition that exhibits excellent abrasion resistance in the cured product and suppresses the generation of air bubbles within the cured product, and to provide a shoe repair method using a moisture-curing shoe composition that exhibits excellent abrasion resistance in the cured product and suppresses the generation of air bubbles within the cured product. As a solution, a moisture-curing shoe composition is provided that contains (A) a crosslinkable silyl group-containing polyether and / or a crosslinkable silyl group-containing polyurethane, and (B) a crosslinkable silyl group-containing vinyl-based organic polymer.

The invention relates to the technical field of building engineering and building materials, in particular to a steel structure roof waterproof structure based on a bidirectional sliding mechanism and a construction method.The steel structure roof waterproof structure comprises a first fixing assembly, a second fixing assembly and an edge covering plate, and the first fixing assembly and the second fixing assembly structurally comprise a fixing base and a protective cover plate; according to the invention, a split type floating connection structure is adopted, and a non-penetrating lock catch structure and a reserved thermal expansion buffer gap are matched, so that the mechanical decoupling of the roof rigid waterproof layer and the building main body structure layer is realized. The protective cover plate and the fixed base are limited and buckled only through the elastic clamping claws and the convex guide rails, so that the protective cover plate is allowed to generate controlled floating displacement in the horizontal direction, and thermal expansion and cold contraction stress generated by a large-span steel structure due to day and night or seasonal temperature difference is effectively released; the problems of structural damage such as fastener shearing, plate arching deformation or weld seam tearing caused by stress concentration in a traditional penetrating type rigid fixing mode are solved.

A sprayable aerosol adhesive formulation, the sprayable aerosol adhesive formulation comprising, based on the total weight of the sprayable aerosol adhesive formulation: 1) A bulk adhesive formulation comprising: a) 10-80 wt%, preferably 10-65 wt%, more preferably 10-40 wt%, most preferably 15-35 wt% of silyl modified polymer compounds; b) 0.5-5 wt%, preferably 0.8-3.5 wt% of at least one adhesion promoter; c) 0.5-5 wt%, preferably 0.8-3.5 wt% of at least one dehydrating agent; d) optionally 0-30 wt%, preferably 5-25 wt% of at least one plasticizer compound; e) optionally 0-60 wt% preferably 15-55 wt% and more preferably 30-50 wt% of at least one filler, f) optionally 0-20 wt%, preferably 1-15 wt% and even more preferably 2-10 wt% of at least one non-reactive diluent, and 2) A propellant comprising at least 70 wt% of a dimethyl ether propellant and optionally further comprising up to 30 wt% of butane, propane, isobutane, hydrofluorocarbon (HFC), hydrofluoro- oleofin (HFO),dry air, nitrogen or a combination based on the total weight of the propellant wherein based on the total weight of all silyl modified polymer compounds in the formulation, 80-100 wt%, preferably 90-100 wt% of the silyl modified polymer compounds have a viscosity in the range of 0,2 Pa.s to 8 Pa.s, preferably in the range of 0,4 Pa.s to 8 Pa.s, more preferably between 0.4 Pa.s and 5 Pa.s, and wherein the bulk adhesive formulation has a viscosity in the range of 0.1 Pa.s to 8 Pa.s, preferably 1 Pa.s to 7 Pa.s, more preferably in the range of 1.5 Pa.s to-6 Pa.s (the viscosity measured according to ISO 3219-2 in a plate – plate configuration at 200 micron gap after 24 hours at a shear rate of 10 s-1 and at room temperature), and wherein the bulk adhesive formulation comprises 2-10 wt% of at least one non-reactive diluent in case the bulk adhesive formulation comprises ≥ 15 wt% of at least one filler, and wherein at least 50 wt% of the silyl modified polymer compounds are silyl modified polyether compounds based on the total weight of all silyl modified polymer compounds in the bulk adhesive formulation, and wherein the weight ratio of the bulk adhesive formulation to propellant is between 40:60 to 90:10.

The invention discloses a self-repairing mute tire and a preparation method thereof, and relates to the technical field of tires, the self-repairing mute tire comprises a tire body, and a self-repairing rubber layer and a mute material which are sequentially attached to the inner wall of the tire body from inside to outside; the self-repairing adhesive layer is prepared from the following components: epichlorohydrin rubber, acrylate rubber, a rosinyl phenyl phosphine oxide isoxazolyl functional polymer, 4, 4-chloroformyl phenyl ether, a catalyst, 2, 2-bis [4-(4-aminophenoxy) phenyl]-1, 1, 1, 3, 3, 3-hexafluoropropane, trithiocyanuric acid, a filler, an accelerant TMTD (Tetramethylthiuram Disulfide) and an auxiliary agent; the rosinyl phenyl phosphine oxide isoxazolyl functional polymer comprises structural units introduced through a condensation polymerization reaction of the following monomers: glycerol triabietate, bis (4-carboxyl phenyl) phenyl phosphine oxide and 3, 5-isoxazoledicarboxylic acid. The tire is remarkable in self-repairing effect, good in mute performance, sufficient in performance stability and long in service life.

The invention belongs to the technical field of photo-curing materials, and particularly relates to a photo-curing adhesive for 3D printing and a preparation method thereof.The photo-curing adhesive for 3D printing is prepared from, by weight, 30-70 parts of isocyanate-group-free polyurethane modified acrylate resin, 30-70 parts of a curing agent, 1-5 parts of a curing agent, 1-5 parts of a curing agent and 1-5 parts of a curing agent. 20 to 40 parts of a bio-based acrylate monomer; 10-30 parts of a low surface tension acrylate monomer; and 1-7 parts of a photoinitiator. According to the invention, the polyurethane acrylate resin synthesized from DOMA (2-oxo-1, 3-dioxolane-4-yl methyl methacrylate) and polyether amine through a non-isocyanate path is adopted, so that the possibility of existence of free isocyanate monomers is thoroughly eliminated from the aspect of molecular design, and the safety in production and use processes is remarkably improved.

The invention relates to an in-situ polymerization cross-linked battery adhesive as well as a preparation method and application thereof, and belongs to the technical field of electrode materials. The technical problems that a traditional linear adhesive is low in mechanical strength, poor in high-temperature stability and prone to swelling in electrolyte, and an existing crosslinking technology is complex in process and incompatible with an existing production line are solved. The invention provides an adhesive. A polyamino compound and polyethylene glycol with multiple epoxy end groups are spontaneously subjected to a ring-opening polymerization reaction through amino groups and epoxy groups, and a three-dimensional cross-linked polyether-amine network structure is formed in situ. The method is simple in process and compatible with a conventional electrode drying process. A cross-linked network formed by the adhesive endows the electrode with excellent mechanical strength and stripping resistance, and active substances can be effectively inhibited from falling off; and meanwhile, the high thermal stability and the insolubility in electrolyte are realized, so that the cycle life and the safety of lithium ion, sodium ion and potassium ion batteries are remarkably prolonged, and the safety of the lithium ion, sodium ion and potassium ion batteries is remarkably improved.

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.

The objectives are to provide a moisture-curing shoe composition that exhibits excellent abrasion resistance in the cured product, suppresses the generation of air bubbles within the cured product, and has excellent transparency in the cured product, and to provide a shoe repair method using a moisture-curing shoe composition that exhibits excellent abrasion resistance in the cured product, suppresses the generation of air bubbles within the cured product, and has excellent transparency in the cured product. As a solution, a moisture-curing shoe composition is provided that contains (A) a crosslinkable silyl group-containing polyether and / or a crosslinkable silyl group-containing polyurethane, (B) a crosslinkable silyl group-containing vinyl organic polymer, and (C) a diluent and / or a plasticizer.