1485 results about "Adhesive cement" patented technology

The invention relates to the field of adhesives, in particular to a structural adhesive epoxy composition and a preparation method thereof. The structural adhesive epoxy composition is prepared from the following raw materials: epoxy resin, a toughening agent, a reinforcing agent, filler, a latent curing agent, a latent accelerant, a chemical foaming agent, a physical foaming agent and the like. Finally, the epoxy composition prepared by the invention can be used as a structural adhesive raw material, has ultrahigh expansion rate, low-temperature rapid curing capacity and structural adhesive property, and also has good mechanical properties and excellent comprehensive application effect, so that the complex requirements of the application field of the prior art on the structural adhesive raw material are met.

The invention discloses a high-refractive-index nano-composite optical adhesive and a preparation method thereof, and belongs to the technical field of optical transparent adhesives. The optical adhesive is prepared by taking a polyurethane acrylate oligomer with a specific structure as matrix resin, introducing surface-modified barium titanate and zirconium oxide core-shell nanoparticles as a functional filler, and matching with an active diluent, a photoinitiator and a silane coupling agent in a specific proportion. Through the design of the core-shell structure, the core problems that the high-refractive-index nanoparticles are easy to agglomerate in an organic resin matrix, the dispersion stability is poor and the bonding force with a matrix interface is weak are effectively solved. The prepared optical adhesive has a refractive index of more than 1.65, a light transmittance of more than 99% and a haze of less than 0.3% after being cured, has excellent bonding strength, weather resistance and long-term use stability, and is especially suitable for precise lamination of high-end display devices (such as OLEDs (Organic Light Emitting Diodes) and micro-lens arrays).

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 ceramic materials, in particular to a method for reducing the surface roughness of a silicon nitride instant-fired sheet, which comprises the following steps: S1, mixing alpha-silicon nitride, beta-silicon nitride, absolute ethyl alcohol and herring fish oil, grinding and dispersing to obtain basic mixed powder; s2, mixing, grinding and dispersing the filling mixed powder, absolute ethyl alcohol and herring fish oil, then carrying out filter pressing and drying, calcining and regrinding to obtain ground filling mixed powder; s3, mixing and ball-milling the basic mixed powder, the ground filling mixed powder, a solvent, an adhesive, a plasticizer and a dispersing agent to obtain slurry; s4, casting the slurry into a film; s5, attaching the thin film to the surface of the silicon nitride green body, and pressing the silicon nitride green body into a whole piece through an isostatic press to obtain a pressed green body; s6, a boron nitride isolation layer is printed on the surface of the pressed green body, and the green body with the isolation layer is obtained; and S7, stacking the green bodies with the isolating layers, and then carrying out adhesive removal and sintering reaction to obtain the silicon nitride ceramic chip.

The invention discloses a UV curing adhesive for coating a low-refractive-index optical fiber and a processing method thereof, belongs to the technical field of adhesive preparation, and is used for solving the technical problem that the refractive index and the damp-heat resistance of the UV curing adhesive for coating the optical fiber in the prior art need to be further improved. The preparation method comprises the following steps: introducing a low-refractive-index hybrid siloxane prepolymer, a multi-component interface bonding prepolymer and a modified branched polyester prepolymer into a system together, and constructing a compact and uniform organic-inorganic three-dimensional network in a curing process by utilizing silica condensation, interface chemical bonding and a flexible chain segment cross-linking reaction, the low-refractive-index hybrid siloxane prepolymer endows a film layer with a stable refractive index, the multi-component interface bonding prepolymer enhances the binding force of a base material, the modified branched polyester prepolymer improves stress buffering and toughness, and the obtained cured film is low in refractive index, firm in interface bonding and small in mass change in a humid and hot environment and shows excellent optical stability and long-term reliability.

The invention relates to the technical field of automobile parts, in particular to an automobile rubber sealing part and a preparation method thereof. A metal framework base material is stamped in a numerical control mode, and a framework blank is obtained by controlling deviation through a positioning pin; after being slightly roughened, the blank is phosphatized, coated with a special rubber prime coat adhesive and subjected to infrared drying; weighing the raw materials according to the ratio, feeding into an internal mixer by stages, and mixing at controlled temperature and speed to obtain a rubber compound; feeding the mixed rubber into a double-roller open mill to press a continuous rubber sheet in a step-by-step distance-adjusting manner; performing hydraulic cutting by a special cutting die to obtain a slightly large formed rubber sheet; sticking the molded film to the framework into a mold with a positioning boss, exhausting, boosting and vulcanizing to obtain a semi-finished product; feeding the semi-finished product into a hot air oven and introducing nitrogen for secondary vulcanization; and carrying out laser thickness measurement and visual inspection, packaging qualified products in an anti-static manner, and sealing in a corrugated carton. The framework precision and the rubber bonding strength are improved, and degumming is avoided; stable rubber material performance and uniform rubber sheet thickness are guaranteed, and material shortage is reduced; vulcanization displacement and bubbles are prevented, rubber oxidation and aging are inhibited, and the durability and stability of the product are improved.

The utility model discloses a high-temperature-resistant flash valve exhaust nozzle structure which comprises a pipe body and an energy reduction structure. The energy reduction structure comprises at least two stages of ceramic energy reduction units which are connected in series, and the ceramic energy reduction units are connected in the pipe body; the ceramic energy reduction unit comprises a first-stage energy reduction assembly and a second-stage energy reduction assembly; the first-stage energy reduction assembly comprises a first ceramic spray pipe and a first liner pipe; the first lining pipe sleeves the outer side of the first ceramic spray pipe; the first liner tube is arranged in the tube body; the second-stage energy reduction assembly comprises a second ceramic spray pipe and a second liner pipe; the second lining pipe sleeves the outer side of the second ceramic spray pipe; the second liner tube is arranged in the tube body; the end of the first ceramic spray pipe abuts against the end of the second ceramic spray pipe. And a medium flows out of the pipe body after sequentially passing through the first-stage energy reduction assembly and the second-stage energy reduction assembly from the inlet end of the pipe body. According to the multi-stage energy reduction device, the multi-stage energy reduction assemblies connected in series are adopted, medium pressure can be decomposed into stage-by-stage release, and therefore the fluid speed is effectively reduced, and dependence on a high-temperature adhesive is also avoided.

The invention relates to the technical field of polyurethane structural adhesives, in particular to a two-component polyurethane structural adhesive and a preparation method thereof. Comprising a component A and a component B. The component A comprises, by weight, 70-130 parts of polyether polyol, 1-5 parts of a chain extender, 5-10 parts of a flame retardant, 6-12 parts of a first dewatering agent, 3-5 parts of a thixotropic agent, 0.06-1 part of a catalyst and 110-200 parts of a modified heat-conducting filler. The component B is prepared from 70 to 130 parts of polyurethane prepolymer, 0.5 to 2 parts of second dewatering agent and 110 to 200 parts of modified heat-conducting filler; the technical problems that in the prior art, a polyurethane system adhesive is serious in cohesive strength attenuation under the working condition of 80 DEG C and low in high-temperature shear strength retention rate are solved by providing the double-component polyurethane structural adhesive.

The invention relates to an adhesive technology based on a laminated spraying copper bar, and belongs to the technical field of copper bar production technologies, and the adhesive technology comprises the following steps: copper bar pretreatment: carrying out processing treatment on the copper bar according to the structural requirements of a design drawing; gluing and laminating are conducted, specifically, the surface of the spraying copper bar 1 and the surface of the insulating plate 2 are evenly smeared with adhesives, the adhesives are placed in an overlapped mode according to design requirements, and the adhesives make contact with one another and are tightly attached to one another; curing treatment is conducted, specifically, the stacked copper bars are put into a drying oven to be subjected to curing treatment; and in the performance test process, the sprayed copper bar is subjected to voltage withstanding alternating current for 10kv for 60s, so that no breakdown and no flashover are realized, and the partial discharge value is less than or equal to 10pC. The insulating plate needs to be selected with proper thickness and size according to electrical performance such as creepage distance and the like. The spraying thickness of the epoxy resin coated copper bar needs to be controlled according to insulation performance and the like. The finished adhesive copper bar has good electrical and insulating properties, and meets the requirements of the power industry for high-performance conductive parts.

To provide an adhesive strength testing device capable of testing a tensile adhesive strength in the thickness direction of an expansive adhesive with higher accuracy than before.SOLUTION: Provided is an adhesive strength testing device for testing a tensile adhesive strength of an expandable adhesive with respect to a predetermined material, the testing device including: a pair of test pieces made of the material; a spacer; a holding member that presses the test pieces facing each other via the spacer and holds the test pieces such that a space is formed between facing surfaces of the test pieces; and a tensile member that has a first attachment portion attached to a tensile force generator that generates a tensile force and a second attachment portion attached to each of the test pieces from which the holding structure has been removed, the facing surfaces being bonded to each other by the expandable adhesive disposed in the space, and that transmits the tensile force generated by the tensile force generator to each of the test pieces to pull the test pieces in a direction in which the facing surfaces are separated from each other.SELECTED DRAWING: Figure 8

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 an epoxy adhesive solution composition, a preparation method of an epoxy adhesive solution and a modified cellular board. The epoxy adhesive liquid composition comprises the following components in parts by weight: 53-58 parts of epoxy resin, 2-10 parts of a silane coupling agent, 1-10 parts of a curing agent, 1-5 parts of blocked isocyanate and 60-70 parts of water, wherein a blocking group of the blocked isocyanate is selected from hydroxyl, oximido, acylamino, amino, imidazolyl, pyrazolyl or piperazinyl. By introducing the blocked isocyanate with the specific structure, the epoxy adhesive liquid can be subjected to pre-crosslinking reaction in the early drying treatment process, the modulus and high temperature resistance of a formed dry film are improved, and the phenomenon of glue overflow in the subsequent curing stage is inhibited; therefore, the structural integrity and the bonding strength of the adhesive layer in the modified cellular board under the high-temperature condition are improved.

The invention relates to a high-heat-resistance and high-insulation two-component epoxy resin adhesive and application thereof, and belongs to the technical field of epoxy resin. The technical problem to be solved by the invention is to provide the high-heat-resistance and high-insulation two-component epoxy resin adhesive. The adhesive comprises a component A and a component B. The component A comprises bisphenol A epoxy resin, novolac epoxy resin, silicon carbide whiskers, potassium titanate fibers, boron phenolic resin and modified nano boron nitride. The component B is prepared from methylhexahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, 2-phenylimidazole, modified aluminum oxide, polyimide micro powder and modified wollastonite. Through synergism of multiple materials, balance of heat conduction, insulation, mechanical strength and thermal stability of the adhesive is realized. Under high-frequency pulse voltage, the adhesive is long in electrical aging life. A gradient curing process is adopted for curing, complete reaction in each stage is guaranteed, and internal stress is reduced. The process fault tolerance is high, the environment compatibility is high, the cost is low, and the curing time is short.

The invention discloses a high-strength epoxy-based adhesive and a preparation method thereof, and relates to the technical field of epoxy-based adhesives, the high-strength epoxy-based adhesive comprises the following components: 80-120 parts of epoxy resin; 20-40 parts of a curing agent; 10-35 parts of ethylene propylene diene monomer powder; 5 to 20 parts of toughening resin; 30-80 parts of an inorganic filler; 0.5 to 3 parts of a coupling agent; 0.5 to 2 parts of an auxiliary agent; the preparation is performed based on the formula. According to the invention, the ethylene propylene diene monomer powder is introduced into an epoxy resin system and is matched with the toughening resin, the inorganic filler and the coupling agent for collaborative design, so that the impact resistance and deformation adaptability of a cured adhesive layer are remarkably improved while the adhesive keeps relatively high bonding strength and structural stability; the obtained high-strength epoxy-based adhesive has good mechanical properties, construction performance and engineering adaptability, and is suitable for popularization and application under various complex working conditions.

The invention discloses a single-component isocyanate Pickering emulsion adhesive with long pot life as well as a preparation method and a use method thereof, and belongs to the technical field of high polymer materials / adhesives. The invention aims to solve the problems of low artificial board production efficiency, unstable board bonding performance and difficulty in direct application of a lignin body to a reverse isocyanate emulsion adhesive system due to short adhesive preparation pot life and dependence on environmental humidity in curing of an existing isocyanate adhesive. The single-component isocyanate Pickering emulsion adhesive with the long pot life is prepared from isocyanate, water, lignin sphere nanoparticles and a surfactant. The invention further discloses a preparation method of the single-component isocyanate Pickering emulsion adhesive with the long pot life. The preparation method comprises the following steps: 1, mixing; and 2, emulsifying. The application method comprises the following steps: coating the surface of a base material with the single-component isocyanate Pickering emulsion adhesive, and then assembling and hot-pressing. The invention is used for the single-component isocyanate Pickering emulsion adhesive with the long pot life as well as the preparation and the use of the single-component isocyanate Pickering emulsion adhesive.

The invention relates to the technical field of adhesives, in particular to an epoxy-polyurethane hybrid two-component structural adhesive and a preparation method thereof. The bi-component structural adhesive comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 20-40 parts of isocyanate-terminated modified polyurethane resin, 50-60 parts of epoxy resin, 0.5-1 part of a coupling agent, 10-20 parts of inorganic powder filler and 0.01-0.05 part of toner A; the component B is prepared from the following raw materials in parts by weight: 65 to 75 parts of hydroxyl-terminated modified polyurethane resin, 20 to 25 parts of amine curing agent, 0.5 to 1 part of coupling agent, 0.01 to 0.05 part of toner B and 0.05 to 0.1 part of catalyst. Compared with a traditional two-component epoxy structural adhesive, the epoxy structural adhesive has more excellent potting filling performance, more excellent bonding strength, better flexibility and more balanced body strength, and is suitable for the fields of new energy battery potting and high-end industrial potting adhesives.

The utility model discloses a device for recovering ethyl acetate in an adhesive production process, which comprises a dehydrating tower, a drying tower, a gas-liquid separation tower, a gas-liquid separation tower, a gas-liquid separation tower and a gas-liquid separation tower, the layering device is connected with the top of the dehydrating tower and is used for layering condensate of tower top components of the dehydrating tower; the deacidification tower is connected with a discharge hole in the bottom of the layering device and is used for removing the layered oil phase component and acetic acid in the oil phase feed liquid; the membrane component is connected with the top of the deacidification tower and is used for carrying out dehydration treatment; and the refining tower is connected with the top of the membrane component and is used for removing an ethanol light component in the feed liquid to obtain an ethyl acetate product. According to the device disclosed by the utility model, the layering pretreatment is combined with the multi-stage rectification, membrane separation and energy collaborative optimization technology, so that efficient recovery of ethyl acetate and green collaboration of waste liquid treatment are realized; the whole process adopts a multi-stage energy recovery design, so that the steam consumption and energy consumption cost are remarkably reduced, and meanwhile, the organic waste liquid discharge is reduced.

The invention provides polyurethane serving as a hot melt adhesive and alcosol water as well as a preparation method and application thereof, and relates to the technical field of polyurethane binders. The preparation method comprises the following steps: mixing polydihydric alcohol, diisocyanate, an organic solvent and a catalyst to carry out polymerization reaction, and then mixing with chain extenders (dihydric alcohol containing 2-ureido-4-pyrimidone groups and dihydric alcohol containing bipyridine groups) to carry out chain extension reaction to obtain polyurethane. According to the invention, 2-ureido-4-pyrimidone and dipyridyl groups are introduced into a macromolecular chain of polyurethane, and a formed hydrogen bond can provide strong intermolecular cohesion in the adhesive, so that the strength of the material is improved, and the adhesive force with the surface of a base material can be enhanced; the bipyridine group can form a chelating structure with metal ions on the surface of a metal substrate, so that the bonding strength with the metal substrate is enhanced. According to the invention, a single polyurethane material has dual functions of hot-melt bonding and normal-temperature green solvent bonding, and has excellent bonding performance and milder bonding conditions.

The application discloses a heat-conducting adhesive tape and a preparation method thereof, and particularly relates to the field of heat-conducting adhesive tapes. The heat-conducting adhesive tape comprises a tape, the tape comprises an adhesive layer and release layers one and two respectively compounded on two sides of the adhesive layer, the release layer two is provided with a plurality of groups of tear zones, the tear zone is composed of a lap portion one and a lap portion two formed at opposite ends of the release layer two, the lap portion one is lapped on the lap portion two, and the adhesive layer comprises a base material and an adhesive agent coated on two sides of the base material. The lap portion one and the lap portion two are formed to be lapped with each other, so that when the tape is pasted on an LED lamp panel, the middle part can be pasted first, and then the two ends are pasted gradually from the middle part. Since the influence of tape rebound force on both sides of the LED lamp panel is independent and the rebound force is reduced, the bending deformation of the LED lamp panel can be greatly reduced by the method, and the LED lamp panel is not easy to fall off due to deformation after being pasted on a base plate.

The invention discloses an aluminum-plastic film for a high and low temperature resistant solid-state battery. The aluminum-plastic film is sequentially composed of a first nylon layer, a first adhesive layer, a second nylon layer, a second adhesive layer, an aluminum foil layer, a third adhesive layer, a third nylon layer, a fourth adhesive layer and a fourth nylon layer from inside to outside. The first nylon layer adopts a copolymer casting film of PA6, PA66 and PA1010 as a heat sealing layer, so that the brittleness of a material in an extremely low-temperature environment can be avoided, and the low-temperature resistance of a finished product film is improved. The second nylon layer and the third nylon layer adopt PA6 biaxially oriented films as middle supporting layers, so that the stamping resistance of the finished aluminum-plastic film can be further improved. The fourth nylon layer adopts a PA66 biaxially oriented film as an outer protective layer, so that the high-temperature resistance of the finished aluminum-plastic film can be improved, and the problem of scalding in the heat sealing process is avoided. The barrier that a traditional aluminum plastic film is not resistant to low temperature and high temperature is broken through, and the application range is widened.

The invention relates to the technical field of adhesives, and particularly discloses an adhesive for repairing a glass fiber reinforced plastic pipeline and a preparation process. The invention relates to an adhesive for repairing a glass fiber reinforced plastic pipeline. The adhesive is prepared from the following raw materials: modified bisphenol A epoxy resin, a curing agent, a glass fiber reinforced filler, a silane coupling agent, phenyl glycidyl ether, hydroxyl-terminated nitrile rubber and an antioxidant 1076, the modified bisphenol A type epoxy resin is prepared by grafting and modifying bisphenol A type epoxy resin through amino-terminated polyether; the glass fiber reinforced filler is prepared from hydroxylated glass fibers and a graphene-carbon nanotube compound through covalent grafting. The adhesive can be used for emergency repair of glass fiber reinforced plastic pipelines, has the advantages of high low-temperature curing speed, high bonding strength and good durability, can effectively avoid cracking and leakage of repaired parts, and is adaptive to low-temperature and high-pressure complex repair working conditions. The preparation process is simple and convenient to operate and high in controllability, the adhesive with uniform performance can be stably prepared, and the repair efficiency and repair quality are guaranteed.

The invention discloses a high-stability bio-based polyurethane adhesive for artificial turf and a use method of the high-stability bio-based polyurethane adhesive, and relates to the technical field of polyurethane adhesives. The adhesive comprises the following raw materials in parts by weight: a component A: 20-60 parts of bio-oil polyol, 20-60 parts of polyether polyol, 5-15 parts of a chain extender, 0.1-1 part of an anti-aging agent, 1-5 parts of a dispersing agent, 0.1-1 part of a catalyst, 2-5 parts of color paste and 100-300 parts of filler; the component B is prepared from 30 to 60 parts of isocyanate. According to the polyurethane adhesive, environment-friendly solvent-free raw materials are adopted, and the bio-oil polyol is used as a main material, so that the polyurethane adhesive has reproducibility, environmental friendliness and naturalness; the high-performance dispersing agent is added, so that the stability of the polyurethane adhesive is improved, the viscosity of a system is reduced, the bonding strength of the adhesive is improved, the mixing uniformity of polyurethane is effectively enhanced, the stabilizing time is long, the performance is better, and the polyurethane adhesive can be better applied to artificial turf as an adhesive.

The invention discloses an adhesive tape for battery insulation and a compounding process thereof, and relates to the technical field of battery insulation. The adhesive tape for battery insulation is prepared by taking a polyimide film as a base film and coating an adhesive, the adhesive is prepared from the following raw materials in parts by weight: 70 to 90 parts of polyacrylate emulsion, 6 to 12 parts of isocyanate curing agent, 4 to 8 parts of terpene resin, 10 to 18 parts of modified aluminum hydroxide, 5 to 9 parts of modified aluminum oxide, 7 to 14 parts of nano montmorillonite, 0.8 to 2.5 parts of antioxidant 168, 0.5 to 2 parts of ultraviolet light absorber UV-327, 2.5 to 5 parts of silane coupling agent KH-570, 31 to 48 parts of propylene glycol methyl ether acetate and 3 to 6 parts of glycerol. The adhesive tape for battery insulation is matched with modified aluminum hydroxide and aluminum oxide to synergistically improve the performance. The product has excellent insulativity, heat resistance and stability, the processing process is controllable, and strict use requirements in the field of batteries are met.

The invention relates to the technical field of anti-drag films, and particularly discloses a high-strength durable anti-drag film and a preparation method thereof.The high-strength durable anti-drag film is prepared by adopting an antioxidant and CTAB-montmorillonite to modify TPU to form a substrate film and improve the strength and aging resistance of a material, then adopting a block copolymerization mode to prepare a block prepolymer containing a benzene ring and a siloxane chain segment, and finally preparing the high-strength durable anti-drag film. According to the present invention, the maleic anhydride grafted SEBS is adopted as the raw material, such that the heat resistance and the strength of the material can be improved while the ultraviolet resistance and the resistance reducing performance of the material can be improved, the adhesive containing the maleic anhydride grafted SEBS is prepared, and during curing, the interface bonding strength, the peeling strength and the strength and the heat resistance of the material can be enhanced through the physical entanglement and chemical bonding form.

The invention discloses a method and system for preparing a composite board through continuous pressing of straw and waste textiles, and relates to the technical field of waste utilization, the system comprises a straw preparation unit, a waste spinning preparation unit, a mixed paving forming unit and a continuous flat pressing type hot press which are connected in sequence, and control is achieved through a control unit. The method comprises the following steps: carrying out chopping, fiber tearing and drying treatment on straws, and carrying out fiber regeneration treatment on waste textiles; mixing the two materials with an adhesive in proportion, and paving to form a three-layer blank; and sequentially carrying out pre-pressing, segmented hot-pressing curing, cutting, stack cooling and sanding packaging to obtain a finished product of the composite board. According to the method, resource utilization of the straw and the waste textiles is achieved, and the produced composite board is excellent in physical and mechanical property, high in production efficiency and suitable for large-scale production.

The invention relates to the technical field of high polymer materials, and discloses a furyl polyurethane adhesive and a synthesis method thereof, polymer polyol is used as a soft segment, isocyanate and two specific furyl chain extenders are used as hard segments, polymerization is performed through a one-step method, and the method has the advantages of simple process, short flow, mild reaction conditions and the like. Wherein a furan ring and an amide group of the two specific furyl chain extenders endow the material with rigidity and excellent bonding performance, and form a high-density hydrogen bond network with a hydrazide group, so that the mechanical strength, the toughness and the bonding performance of the material are remarkably improved. By regulating and controlling the proportion of the components, the rigidity and flexibility of the material can be effectively balanced, so that the polyurethane adhesive with excellent comprehensive performance is prepared. The furyl polyurethane adhesive prepared by the invention has relatively high adhesion strength and mechanical strength, and can be applied to the fields of buildings, automobile manufacturing, medical treatment, packaging, aerospace, electronics and the like.

The invention relates to an epoxy resin adhesive composition and a preparation method thereof, and belongs to the technical field of high-performance polymer material modification and electronic packaging materials, and the epoxy resin adhesive composition comprises the following components by weight: 100 parts of basic epoxy resin; 5-30 parts of a hyperbranched liquid crystal modifier; adding the curing agent according to a stoichiometric ratio; 100 to 600 parts of a heat-conducting filler; 0.1-5 parts of an accelerant and an auxiliary agent; the hyperbranched liquid crystal modifier has a core-shell structure and is prepared from a hydrogen-containing hyperbranched polysiloxane core and an alkenyl-terminated liquid crystal epoxy monomer through a hydrosilylation reaction under the action of a catalyst, the hyperbranched polysiloxane core is introduced, the friction resistance among high-concentration fillers is reduced by utilizing the torispherical structure of the hyperbranched polysiloxane core, and the hyperbranched liquid crystal modifier has the advantages that the friction resistance is reduced; under the condition that 350 parts of heat-conducting filler is filled, the modifier is added, so that the high-filling system still has excellent flowability and leveling property while keeping high heat-conducting property, and is suitable for high-precision micro-encapsulation scenes; the heat conductivity of the scheme is obviously superior to that of a system which does not use the modifier or does not adopt a stepped heating process.

The invention discloses a high-temperature-resistant and high-modulus adhesive and a preparation method thereof, and relates to the technical field of adhesives. The water-based adhesive comprises the following raw materials: 40-60 parts of a soft monomer, 20-30 parts of a hard monomer, 5-10 parts of a functional monomer, 1-3 parts of a cross-linking agent, 0.5-1.5 parts of an initiator, 2-5 parts of a modified nano filler and 30-50 parts of a solvent, the functional monomer is prepared by compounding N-methoxy methyl acrylamide, acrylic acid and 2-acrylic acid-hexahydro-4, 7-methylene-1H-indenyl ester according to a mass ratio of 2 to 1 to (1 to 1.5); the cross-linking agent is prepared by compounding N, N '-methylene bisacrylamide and 1, 1, 3, 3-tetramethyl-1, 3-divinyl disilazane according to a mass ratio of 1: (0.5 to 1). The adhesive has the advantages of favorable adhesive property, favorable high-temperature resistance and high modulus.

The invention discloses a deformation joint structure based on active guide drainage and long-acting sealing and a construction method thereof, and belongs to the technical field of building construction. The structure comprises a bottom active guiding and discharging assembly and a top sealing assembly. The bottom active guide and drainage assembly comprises flexible waterproof adhesive tapes which are fixedly adhered to the side walls of the building structures on the two sides of the deformation joint through adhesive layers, and the flexible waterproof adhesive tapes are bent downwards to form drainage channels; the top sealing assembly comprises waterproof reverse ridges arranged on the top faces of the building structures on the two sides and a top cover plate stretching across the deformation joint. According to the invention, a first defense line is formed through the top cover plate and the side waterproof reverse ridges by taking'changing blockage into dredging 'as a core, so that an external water source is effectively blocked; and a second defense line is formed through the flexible waterproof adhesive tape at the bottom, permeated water flow is actively collected and discharged, the water leakage problem caused by aging of traditional sealant is avoided, and long-acting sealing and water prevention of the deformation joint are achieved.

The invention relates to a high-insulativity tearable laminated gasket, a preparation method and application. Comprising at least two layers of stacked films which are bonded into a whole through an adhesive. Wherein the film is one of a polyimide film, a polyethylene film, a polyether-ether-ketone film or a polytetrafluoroethylene film; the adhesive comprises epoxy resin, a flexibilizer, an amine curing agent and a filler, through preparation of the high-insulativity tearable laminated gasket, the technical problems that in the prior art, an insulativity gasket needs to be used in the fields of electronics, electrics, aerospace and the like, and an existing gasket contains a metal layer or is high in dielectric constant and cannot meet the use requirement are solved.