1335 results about "Polyurethane adhesive" patented technology

The invention relates to the technical field of non-woven fabrics, in particular to a production process of a functional fiber woven non-woven fabric body, the non-woven fabric body comprises a non-woven fabric base body, middle layers are arranged on the upper portion and the lower portion of the non-woven fabric base body, and outer layer bodies are arranged on the outer sides of the middle layers; the middle layer is compounded with the upper part and the lower part of the non-woven fabric base body through polyurethane glue, and the dosage of the polyurethane glue is 20g / m < 2 >; the non-woven fabric body is formed by mutually matching a non-woven fabric base body, a middle layer and an outer layer body, the non-woven fabric base body is formed by weaving first modified spandex fibers and polyester fibers, the middle layer is formed by interweaving second modified polyester fibers and hemp fibers, and the outer layer body is formed by spraying an outer layer agent. The product is excellent in wear resistance, stain resistance, heat preservation and breaking strength, remarkable in comprehensive coordination effect and excellent in washing resistance and ultraviolet stability resistance.

The invention relates to the technical field of automobile tires, and discloses a new energy automobile tire self-repairing sealing material adhered with mute cotton. The preparation method comprises the following steps: adding a modified polyurethane adhesive, C5 petroleum resin and a modified carbon nanotube filler into absolute ethyl alcohol, mixing to obtain a self-repairing liquid, adhering polyurethane cotton to the upper part of the self-repairing liquid, and drying to obtain the new energy automobile tire self-repairing sealing material adhered with the mute cotton. Disulfide bonds, boric acid ester bonds and imine bonds introduced into polyurethane through a chain extension reaction and diselenide bonds introduced into carbon nanotubes all belong to dynamic covalent bonds, so that the self-repairing performance of the material is improved; by introducing a rigid benzene ring and naphthyl aromatic structure, the mechanical property of the self-repairing sealing material is improved; the carbon nano tube can play a role in skeleton supporting in a polyurethane matrix, and the mechanical property of the material is further improved by introducing an adamantane rigid structure into the carbon nano tube.

The invention relates to the technical field of polyurethane adhesives, in particular to a quick-curing two-component hot-pressing adhesive as well as a preparation method and application thereof. Comprising a component A and a component B. The component A comprises, by weight, 20 to 60 parts of castor oil polyol, 40 to 80 parts of a filling material, 0.001 to 0.01 part of a catalyst and 0.001 to 0.006 part of an auxiliary agent, and the catalyst comprises a triethylene diamine-terminated heat-sensitive catalyst; and the component B comprises an isocyanate curing agent. The filler comprises heavy calcium carbonate and calcium oxide, and the weight ratio of the heavy calcium carbonate to the calcium oxide is (25-40): 1, so that not only can the cost be effectively reduced, but also the tensile-shear strength of the hot-pressing adhesive can be improved; and when the particle size of the filler is adjusted to be 500-2000 meshes, the tensile-shear strength after cementing can be effectively maintained within a relatively low curing time (3-5 minutes), and meanwhile, the storage stability of the sizing material is improved.

The invention provides a flexible piezoelectric sensor and a signal detection method thereof. The flexible piezoelectric sensor comprises a protective layer PDT, a second electrode layer, a flexible composite piezoelectric film layer, a first electrode layer, a flexible square polyimide substrate and a polyurethane adhesive tape. The signal detection method comprises the steps that the flexible piezoelectric sensor is attached to a human body and a sheep, the flexible piezoelectric sensor obtains signal data generated at a test position, the signal data are obtained through the processing module, signal preprocessing is carried out based on an improved filtering method, and a data set with a specific rule of effective signals is obtained. And then the information is sent to a rear end through wireless transmission, so that accurate identification of different behaviors is realized. The invention has the advantages of simple preparation process, small size, good flexibility, convenience in use, stable performance and the like, and can realize detection of heartbeat, respiration and other signals of human bodies and animals in a complex environment.

The invention relates to a method for producing a polymer composition, in which a silane-modified polymer is polymerized by free-radical chain polymerization with an ethylenically unsaturated monomer and a further ethylenically unsaturated polymer having a free-radical photoinitiator group in a polyol or a prepolymer having terminal isocyanate groups, and to a polymer composition produced by this process. The invention also relates to a method for producing moisture-curable polyurethane hot melt adhesive compositions, 1K polyurethane adhesives and 2K polyurethane adhesives on the basis of the polymer composition according to the invention. The invention also relates to moisture curable polyurethane hot melt adhesive compositions, 1K polyurethane adhesives and 2K polyurethane adhesives produced by these methods.

The invention relates to the technical field of polyurethane adhesives, in particular to an adhesive for tooling polished aluminum and a preparation method thereof. The adhesive comprises a component A and a component B, wherein the raw materials for preparing the component A comprise at least 25-40 parts of a polyol composition, 50-75 parts of a calcium filler, 0.1-0.3 parts of a dispersant, 0.1-0.3 parts of a catalyst, 1-4 parts of a molecular sieve, 0.01-0.2 parts of a defoamer and 0.1-0.5 parts of nano silicon dioxide, and the component B comprises at least isocyanate. By controlling the selection and coordination of the polyol, the dispersant and the catalyst in the system and the addition amount of each raw material, when the provided adhesive is used for bonding the polished aluminum (1-2 mm) to a honeycomb panel, the roller peel strength is ≥60 N*mm / mm, thereby meeting the actual external wall application requirements.

The invention relates to the field of layered interior ceiling processing, and particularly discloses an environment-friendly automobile interior ceiling and a preparation method thereof.The environment-friendly automobile interior ceiling sequentially comprises base cloth, glue-coated PET fiber felt, base cloth, an adhesive and a surface decoration layer from bottom to top; the base cloth is made of any one of non-woven fabric, film-coated non-woven fabric or film-coated non-woven fabric; the preparation method comprises the following steps: coating polyurethane glue on the upper surface and the lower surface of the PET fiber felt to obtain a glue-coated PET fiber felt; spraying water to the glue-coated PET fiber felt, then attaching the glue-coated PET fiber felt to the base cloth, then carrying out hot press molding for 40-120s at the temperature of 100-140 DEG C, and cooling to obtain a semi-finished product; an adhesive is sprayed on the semi-finished product, a surface decoration layer is laid on the semi-finished product, hot pressing is conducted for 20-100 s at the temperature of 90-120 DEG C, after cooling, cutting, edge covering and aftertreatment are conducted, and a finished product is obtained. The method has the advantages of environmental protection, no pollution in the production process, no influence on human health of a user, facilitation of recovery and long service life.

The invention relates to the technical field of polyurethane adhesives, and provides a heat-conducting polyurethane structural adhesive and a preparation and use method thereof.The heat-conducting polyurethane structural adhesive comprises a first component and a second component, and the first component comprises modified bio-based polyol, polythiol, heat-conducting filler, a first water removal agent, a thixotropic agent, a first catalyst and a second catalyst; the second component comprises epoxy resin, diisocyanate, polyisocyanate, a heat-conducting filler, a coupling agent, a second dewatering agent, a dispersing agent and a retarder; the modified bio-based polyol is selected from at least one of modified castor oil polyol, modified grease polyol and modified cashew nut shell oil polyol; the polythiol is selected from at least one of trimethylolpropane tri (3-mercaptopropionic acid ester), pentaerythritol tetra (3-mercaptopropionic acid ester), butanediol mercaptopropionic acid ester and polythiol. Through the arrangement, the heat-conducting polyurethane structural adhesive has relatively long openable time, and is rapidly cured at room temperature within a short time to generate relatively high initial curing strength.

The invention relates to the technical field of organic polymer adhesives, and particularly discloses a modified castor oil-based polyurethane adhesive as well as a preparation method and application thereof. The adhesive comprises two components, and the component A comprises the following components in parts by weight: 30.0-50.0 parts of modified castor oil and 0.0-30.0 parts of refined castor oil; the component B is prepared from the following components in parts by weight: 30.0 to 50.0 parts of polyisocyanate or a polyisocyanate modifier and 0.00 to 0.05 part of a dewatering agent; the modified castor oil is prepared from refined castor oil and cysteamine through a sulfydryl-alkene addition reaction. Amido of the modified castor oil is alkalescent, and the reaction speed of the modified castor oil and isocyanate groups is high; hydrogen bonds are easily generated between urea bonds generated by the reaction of amino groups and isocyanate groups, so that the adhesive is endowed with thixotropy and high strength. The adhesive disclosed by the invention is simple in composition, high in reaction speed and good in thixotropy and bonding strength.

Two-component polyurethane adhesive formulation having a hydrophobic polyol which provides improved moisture resistance.

The invention discloses a composite film material with lasting fragrance, a preparation method and application of the composite film material in sticky notes, and belongs to the technical field of composite film materials. The composite film material is composed of a PET layer, a bonding layer and a CPP layer; the PET layer comprises PET resin, composite filler, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the bonding layer is composed of a solvent type polyurethane adhesive; the CPP layer comprises PP resin, a modified filler, microcapsule essential oil, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the composite film material prepared by the invention not only has lasting fragrance, but also has strong binding force with a writable coating, high strength, good dimensional stability and high transparency.

The invention relates to a light / heat / magnetic detachable high-strength polyurethane adhesive as well as a preparation method and application thereof. The light / heat / magnetic detachable high-strength polyurethane adhesive comprises a polyurethane adhesive and a functional filler. According to the light / heat / magnetic detachable high-strength polyurethane adhesive prepared by the preparation method disclosed by the invention, the colloid is black, and the adhesive has excellent light absorption performance and can realize rapid separation of an adhesive interface under infrared irradiation through a heat effect; meanwhile, the ferroferric oxide can be vibrated and heated under the action of an external magnetic field due to the magnetic response characteristic of the ferroferric oxide, so that fracture and separation of the adhesive layer are promoted. By means of the technology, efficient and reversible disassembly of parts bonded through the hot melt adhesive is achieved, possibility is provided for recycling and reusing of bonding materials and devices, and the problem that traditional polyurethane hot melt adhesive cannot be recycled is solved.

The invention discloses a high-barrier fast-curing solvent-free polyurethane adhesive and a preparation method thereof, and belongs to the field of preparation of polyurethane adhesives. The adhesive is composed of a component A and a component B, the component A and the component B are used in cooperation according to the functional group molar ratio of-NCO:-OH = 1.1-1.9: 1, and the component A is a modified isocyanate adduct formed by reaction of modified polyester polyol and polyisocyanate; and the component B is a mixture of castor oil derivative polyol, modified polyester polyol and polyether polyol. According to the adhesive, through selection of raw material monomers, design of a molecular chain structure and a specific molecular weight size and regulation and control of a molecular proportion, higher reaction activity and excellent water and oxygen blocking performance are achieved. The high-barrier fast-curing adhesive is excellent in peel strength and can meet the actual application process requirements of the adhesive, so that the high-barrier fast-curing adhesive can be widely applied to the field of composite flexible packaging.

The invention relates to the technical field of polyurethane adhesives, in particular to the field of IPC C09J175, and more particularly relates to a small molecule chain extender, a preparation method thereof and red polyurethane adhesive. The small molecule chain extender is prepared from the following raw materials: dichloroanthraquinone and ethanolamine, and the red polyurethane adhesive is prepared from the small molecule chain extender, polyol, isocyanate and a solvent. A red colored group is introduced into a polyurethane molecular chain, and the colored group is used as a part of a chain extender, so that the color migration resistance and the transparency are improved at the same time.

The invention relates to the technical field of polyurethane adhesives, in particular to an adhesive for frock smooth aluminum and a preparation method of the adhesive for frock smooth aluminum. The component A is prepared from the following raw materials in parts by weight: 25-40 parts of a polyol composition, 50-75 parts of a calcium filler, 0.1-0.3 part of a dispersing agent, 0.1-0.3 part of a catalyst, 1-4 parts of a molecular sieve, 0.01-0.2 part of a defoaming agent and 0.1-0.5 part of nano silicon dioxide, the component B is prepared from isocyanate at least, and by controlling the selection and matching of polyol, the dispersing agent and the catalyst in the system and controlling the addition amount of each raw material, the component A and the component B can be prepared into the polyurethane adhesive. When the provided adhesive is used for bonding smooth aluminum (1-2 mm) and a cellular board, the peeling strength of a roller is larger than or equal to 60 N * mm / mm, and the actual outer wall application requirement is met.

The invention relates to the technical field of layered materials, and discloses a flame-retardant heat-insulating layer-shaped composite fabric and a preparation method thereof. The preparation method of the flame-retardant heat-insulating layer-shaped composite fabric comprises the following steps: blending soybean fibers, modified cotton fibers and carbon fibers into yarns, and weaving to obtain a lining fabric; blending the modified aramid 1313 fiber, the cotton fiber and the polytetrafluoroethylene fiber into yarns, and weaving to obtain an outer-layer fabric; immersing the outer-layer fabric into the modified aerogel treating agent to obtain a functionalized outer-layer fabric; one side of the functionalized outer-layer fabric is coated with a polyurethane adhesive, the functionalized outer-layer fabric is attached to the inner-layer fabric, hot pressing is conducted, and the flame-retardant and heat-insulating layer-shaped composite fabric is obtained. The flame-retardant and heat-insulating layer-shaped composite fabric has excellent flame-retardant and heat-insulating properties and also has good antistatic property, antibacterial property, corrosion resistance, water and oil repellency, moisture absorption, breathability and skin friendliness.

The invention relates to the technical field of design and processing of PVC (polyvinyl chloride) composite materials, in particular to a multi-layer composite processing method of a PVC decorative film based on heat resistance, which comprises the following steps: firstly, preparing PVC resin powder, various additives and a nano modified additive, premixing and mainly mixing the raw materials, uniformly mixing under the protection of nitrogen, plasticizing and extruding by using a double-screw extruder, and carrying out extrusion molding to obtain the PVC decorative film based on heat resistance. Surface treatment including plasma and chemical etching is carried out after extrusion, then a modified polyurethane bonding layer containing a silane coupling agent is coated and compounded with a micro-nano structure PET decorative film, ultrasonic vibration is applied, then hot-pressing shaping is carried out, a hot-pressing roller is provided with micro textures, finally cooling and rolling are carried out, and all the steps have specific parameters. According to the method, the effect is remarkable, the heat resistance of the PVC decorative film is greatly improved, the heat deformation temperature is increased, the processing performance is optimized, the production efficiency is improved, the bonding and compounding effect is enhanced, the decorative layer is not prone to falling off, the environmental protection property and the product attractiveness are further improved, and the market competitiveness is enhanced.

The invention discloses a two-component polyurethane adhesive and a use method thereof, and relates to the technical field of adhesives. Comprising a component A and a component B which are separately arranged, wherein the component A comprises a hydroxyl-containing compound, a chain extender, a catalyst, an anti-aging agent, an anti-hydrolysis agent, a filler, a moisture scavenger and a thixotropic agent; the component B comprises an isocyanate-terminated polyurethane prepolymer, isocyanate, a water removal agent, a silane coupling agent, a plasticizer, a filler and a thixotropic agent; the hydroxyl-containing compound comprises hydroxyl-terminated polybutadiene and a first hydroxyl-containing compound. The composite material has the advantages of long opening time, fast curing at high temperature, high body strength, high shear strength and high elongation at break, and realizes consideration and balance of high strength and high toughness. Meanwhile, the bi-component polyurethane adhesive disclosed by the invention does not contain a solvent, so that the solvent residue is reduced.

The invention discloses a bamboo longitudinal and wood transverse composite whole container bottom plate and a preparation method thereof, and belongs to the field of bamboo-wood composite materials. The bottom plate is of a seven-layer alternate paving structure and is formed by compositing transverse wood veneer layers and longitudinal radial bamboo curtain layers, wood veneers are made of lignin modified polyurethane adhesive (reinforced by nano-silicon dioxide), and bamboo curtains are made of bamboo fiber nano-crystal reinforced soybean protein adhesive (cross-linked by genipin). Through continuous paving, fixed-length saw cutting and a'cold-in-cold-out 'hot pressing process (the pressure is 1.5-8.0 MPa, and the temperature is 140-220 DEG C), whole-piece production of any length is achieved. According to the technology, the bamboo-wood interface bonding problem is solved, the bending strength reaches 120 MPa, the interlayer shear strength is 7.8 MPa, the strength retention rate after damp-heat aging resistance is 90%, the formaldehyde emission is smaller than or equal to 0.05 mg / m < 3 >, the bio-based carbon content is 85%, high strength, weather resistance and environment friendliness are achieved, a traditional spliced container bottom plate can be replaced, the material utilization rate is increased by 20% or above, and the manufacturing cost is remarkably reduced.

The invention relates to the technical field of sound absorption materials, in particular to an aerogel and cork composite sound absorption material with a dual-scale pore structure and a preparation method. The preparation method of the aerogel-softwood composite sound absorption material with the double-scale pore structure comprises the following steps that softwood particles subjected to microwave treatment are placed in a SiO2 aerogel precursor solution to be subjected to vacuum impregnation treatment, then hydrolysis and condensation polymerization are conducted, a three-dimensional network structure is formed through crosslinking, freeze drying is conducted after water soaking, and the aerogel-softwood composite sound absorption material with the double-scale pore structure is obtained. SiO2 aerogel and cork composite particles are obtained; and spraying a polyurethane adhesive into the SiO2 aerogel and cork composite particles, and then carrying out hot press molding to obtain the aerogel and cork composite sound absorption material with the dual-scale pore structure. According to the preparation method, microwave treatment and dipping treatment are combined, so that the sound absorption performance of the prepared aerogel and cork composite sound absorption material with the double-scale pore structure is improved, and the problem that sound absorption is not facilitated due to the unique cell structure of cork is solved.

The invention discloses a sizing agent and a preparation method thereof and belongs to the technical field of carbon fibers. The preparation method comprises the following steps: dissolving 1 part of polyethylene glycol in an organic solvent according to a molar ratio, adding 0.9-1.1 parts of a first isocyanate compound, stirring, heating to 40-50 DEG C, and reacting; the preparation method comprises the following steps: respectively adding 0.3-0.5 part of second epoxy resin and a first diisocyanate compound, stirring, heating to 80-90 DEG C for reaction, then respectively adding 0.4-0.6 part of an acrylate compound and a third isocyanate compound for reaction, finally adding 0.8-1.2 parts of an allyl polyethylene glycol end-capping reagent, cooling to 40-50 DEG C, and stirring for 1-2 hours, so as to obtain the polyurethane adhesive. And removing the organic solvent to obtain the modified polyurethane main agent. The modified polyurethane main agent, the first epoxy resin and water are emulsified to obtain the sizing agent with good stability, adhesive force and bundling property, so that the wear resistance and bonding strength of the carbon fiber composite material can be improved.

The invention relates to the technical field of mine filling materials, and discloses a high-strength filling material for a mine and a preparation method, the high-strength filling material for the mine comprises 23.5-30 parts by weight of water, 50-64 parts by weight of chlorine-containing tailings, 5-16 parts by weight of pre-excited gelling slurry, and 2.5-6 parts by weight of a polyurethane cementing agent emulsion. The polyhydroxy sulfonic acid grinding aid prepared by the invention contains a plurality of hydroxyl groups and sulfonic acid groups, has stronger acting force with the surface of the slag and greater infiltration effect, and can be strongly adsorbed in microcracks on the surface of the slag after ball milling, so that the surface energy of slag particles is reduced, the dispersity of the slag particles is improved, and the specific surface area is increased; the activity of the slag powder can be stimulated to a greater extent, and the compressive strength of the filling material can be improved.

The invention relates to the technical field of fire extinguishing microcapsules, in particular to a high-airtightness perfluorohexanone fire extinguishing microcapsule and a preparation method and application thereof.The perfluorohexanone fire extinguishing microcapsule comprises a composite shell layer and a fire extinguishing core, and the composite shell layer is made of ethylene-vinyl alcohol copolymer resin and silicon dioxide nanoparticles; the fire extinguishing core is a perfluorohexanone fire extinguishing agent and is applied to preparation of indoor fire extinguishing pastes, fireproof coatings and polyurethane adhesive materials. According to the perfluorohexanone fire extinguishing microcapsule disclosed by the invention, the diffusion of low-polarity perfluorohexanone is effectively prevented by utilizing the strong hydrogen-bond interaction between hydroxyl groups in the ethylene-vinyl alcohol copolymer resin, and especially under the condition of relatively high temperature, the perfluorohexanone fire extinguishing microcapsule has a good fire extinguishing effect. The problem that an existing perfluorohexanone fire extinguishing microcapsule is poor in long-term air tightness under the condition of high encapsulation efficiency is effectively solved, and meanwhile harmful substances such as formaldehyde cannot be generated.

A method is described for debonding a bonded article. The bonded article comprises at least two components which are bonded to one another by means of a polyurethane adhesive selected from aqueous polyurethane dispersion adhesives and polyurethane hotmelt adhesives. At least one of the components is a thermoplastic polyurethane. The components are debonded by treatment with an aqueous surfactant composition at elevated temperatures.

The invention discloses polyurethane glue with heat conduction and insulation characteristics for a self-adhesive label and a preparation method of the polyurethane glue, raw materials of the glue comprise a polyurethane prepolymer, an organic silicon modifier, nano montmorillonite and the like, and a glue layer has a structure in which a heat conduction compact phase and an insulation porous phase are combined with each other. The organic silicon modifier endows hydrophobicity, and the nano-montmorillonite hinders moisture permeation, reinforces the fiber to support a cellular structure and improves mechanical properties. The preparation method comprises the following steps: preparing a polyurethane prepolymer, modifying organic silicon, dispersing nano montmorillonite and the like, and synergistically improving various properties of the glue by controlling the conditions of each step and the ratio of raw materials. The glue disclosed by the invention is excellent in moisture-proof, heat-conducting, insulating and mechanical properties, can meet the use requirements of the self-adhesive label in a complex environment, and solves the problems that the existing glue is single in performance and cannot meet high-end application scenes.

The invention belongs to the technical field of lithium battery aluminum plastic films, and particularly relates to a high-thermal-conductivity and high-deep-drawing-performance aluminum plastic film, a preparation method thereof and a lithium ion battery, the high-thermal-conductivity and high-deep-drawing-performance aluminum plastic film comprises a nylon film layer, an adhesive layer, an aluminum foil layer and a CPP film layer which are sequentially laminated and compounded from outside to inside; wherein the adhesive layer is prepared from an A component polyurethane glue and a B component polyurethane glue; the component A is prepared from the following components in parts by mass: 20 to 35 parts of polyester polyol, 15 to 25 parts of polyether polyol, 5 to 10 parts of polyisocyanate monomer, 1 to 5 parts of silane coupling agent, 1 to 5 parts of graphene oxide and 40 to 60 parts of solvent; the component B comprises the following components in parts by mass: 95-99 parts of a polyisocyanate curing agent and 1-5 parts of a solvent; the CPP film layer sequentially comprises a corona layer, a supporting layer and a heat sealing layer from the aluminum foil layer to the outside, and each of the corona layer, the supporting layer and the heat sealing layer contains BN inorganic particles; the crystal nucleation rate of the CPP film is changed by adding the high-thermal-conductivity material boron nitride inorganic particles into the material of the CPP film, and excellent deep drawing performance is obtained by matching with the graphene oxide in the adhesive layer.

The high-strength composite corrugated board is characterized by comprising an inner paper layer, a flexible composite layer, an adhesive paper layer, a paper core, a buffer foam board, a reinforced composite layer and a surface paper layer which are sequentially arranged from top to bottom, the upward waveform of the paper core is of a parabola-shaped top structure, and the downward waveform of the paper core is of a triangular vertex angle structure. The corrugated board has the beneficial effects that the compression resistance and the strength of the outer side and the stress buffering performance of the inner side are guaranteed, the overall strength and the bending resistance of the corrugated board are enhanced, the bonding strength is guaranteed by providing a new formula of the flame-retardant polyurethane foam and the waterproof polyurethane adhesive and a combined use method, and the service life of the corrugated board is prolonged. The toughness and the buffering effect are enhanced, the toughness and the pressure bearing capacity of the paperboard are enhanced, and meanwhile the excellent waterproof and flame-retardant effects are guaranteed.

The invention discloses a forming method of a high-bending-strength composite insulator winding pipe, which comprises the following steps: firstly, an inner layer structure of the insulator winding pipe is prepared by a pultrusion process, the inner layer structure is cylindrical, the outer diameter of the inner layer structure is matched with the inner diameter of the winding pipe, and a plurality of uniformly distributed cambered surface bulges are formed on the surface of the inner layer structure; a reinforced interface layer is formed on the outer wall of the inner layer structure, is formed by aramid fiber preform fabric, and is treated by a modified epoxy glue solution by adopting a three-dimensional orthogonal weaving process; the interface layer is tightly attached to the inner layer structure, epoxy / polyurethane glue liquid is coated outside the interface layer, and a semi-finished winding pipe product is formed; the winding pipe semi-finished product is subjected to pre-curing treatment, a small number of uncured groups are reserved, external packaging is conducted through an injection molding method, a winding pipe blank with an outer layer structure is obtained, and the outer diameter of the winding pipe blank is matched with that of the finished product; and demolding the winding pipe blank, fettling and carrying out quality inspection to obtain a finished product of the high-bending-strength composite insulator winding pipe. The method can remarkably improve the mechanical strength and durability of the winding pipe, and has wide application prospects.

The invention relates to a preparation method of a damp-proof antibacterial medicine packaging composite material with multiple barrier functions, and belongs to the technical field of medicine packaging materials. Enabling the composite complexing nano-silver, polyethylene and zinc stearate to pass through a double-screw extruder to obtain nano-silver antibacterial master batches; adding the nano-silver antibacterial master batch, a mixture of linear polyethylene and an ethylene-vinyl alcohol copolymer, an antioxidant 1010 and silicon dioxide into a single-screw extruder to obtain a damp-proof antibacterial film layer; uniformly coating a polyurethane adhesive on the surface of the damp-proof and antibacterial film layer, compounding an aluminum foil and the film layer coated with the adhesive on a compounding machine, and curing to obtain an aluminum foil-damp-proof and antibacterial film layer; the surface of the aluminum foil-damp-proof antibacterial film layer is coated with a polyurethane adhesive, and then the aluminum foil-damp-proof antibacterial film layer is compounded with a biaxially oriented polypropylene film and cured. The packaging composite material prepared by the invention has excellent moisture resistance, antibacterial ability, barrier property and mechanical property.

The invention belongs to the technical field of preparation of polyurethane adhesives, and relates to a serinol derivative damp-heat latent curing single-component polyurethane pouring sealant and a preparation method thereof. The problem that the bonding strength is affected due to embrittlement of a cured adhesive layer formed by a common technology is solved. Comprising a serinol derivative damp-heat latent curing agent, a polyurethane prepolymer, a cross-linking agent and a catalyst. The pouring sealant prepared by the invention is free of VOCs emission, safe, environment-friendly and convenient to use, can be continuously cured at room temperature by utilizing moisture in air after being pre-cured at 100 DEG C for 1 hour, is free of bubbles after being cured, is strong in adhesive strength and resistant to damp-heat aging, and can meet the pouring requirements in the fields of electronic component and power battery assembly and the like.