19 results about "Polyether polyurethane" patented technology

The present application relates to the field of polyurethane, in particular to a kind of fluorine-free high-efficiency carbon-forming flame-retardant polyether polyurethane and preparation method thereof.Flame-retardant polyether polyurethane includes the following components by mass fraction: thermoplastic polyether polyurethane matrix 75-87 parts, halogen-free fluorine-free catalytic carbon composite flame retardant 13-18 parts, functional additive 0-5 parts.The present application realizes high-efficiency flame retardation under very low addition amount through synergistic effect of phosphorus-nitrogen flame-retardant system and catalytic carbon system, only 13-18 parts of flame retardant addition amount is needed, 0.5-3.0mm wall thickness product can reach UL1581 VW-1 highest flame-retardant grade, completely no dripping, solve the industry pain point of traditional halogen-free flame-retardant system high addition amount, thin-wall flame-retardant substandard, rely on fluorine-containing additive anti-dripping, perfect adaptation to the flame-retardant demand of thin-wall product such as electric wire and cable.

This invention discloses a polyether-type polyurethane-epoxy interpenetrating network modified emulsified asphalt, its preparation method, and its application, belonging to the field of road material technology. By weight, it comprises 100 parts emulsified asphalt, 5-15 parts waterborne epoxy resin emulsion, 3-9 parts polyether-type polyurethane prepolymer, 0.5-2 parts nanocellulose dispersion, and a curing agent. The curing agent is added at 10%-60% of the waterborne epoxy resin emulsion. The waterborne epoxy resin emulsion is composed of a mixture of waterborne epoxy resin and an epoxy resin diluent. The polyether-type polyurethane prepolymer is synthesized from diisocyanate, polyether polyol, and a catalyst. This modified emulsified asphalt addresses the technical problems of low adhesion, easy cracking at low temperatures, and poor water resistance in ordinary emulsified asphalt, as well as the high brittleness and insufficient low-temperature performance of waterborne epoxy resin emulsified asphalt.

The application discloses a kind of low temperature extremely cold environment under optical fiber coating detection equipment and method, belong to coating detection technical field, comprising: obtaining temperature cycle times, coating thickness, heating gradient and other detection condition data, and coating adhesion, shrinkage, cracking length and other performance data;Construct detection condition evaluation model output detection condition coefficient;Based on detection condition, coating performance analysis model is established to output performance evaluation coefficient;Combined with the content of silicon dioxide nanoparticles and polyether polyurethane data, material analysis model is output material analysis coefficient;If the coefficient exceeds the preset threshold, then determine that the coating is unqualified and generate target formulation parameters.The application solves the technical problems of coating performance quantification evaluation and formulation precise optimization under extreme environment, significantly improves detection efficiency and reliability.

Provided is a solvent-free adhesive suitable for producing high-quality recycled plastics with little discoloration. The present invention provides a solvent-free two-component curable adhesive that contains a polyol composition (X) containing a polyol compound (A), and a polyisocyanate composition (Y) containing a polyisocyanate compound (C), wherein: the polyol compound (A) includes a polyol compound (A1) that has a hydroxyl value of 45-600 mgKOH / g and an average number of functional groups of 1.8-3.0; the polyisocyanate compound (C) includes a polyether polyurethane polyisocyanate (C1); and the polyol composition (X) and the polyisocyanate composition (Y) are used so that the urethane bond concentration becomes 2.0 mmol / g or greater after reaction.

This application discloses polyether polyols and their preparation methods, combined polyethers, polyurethane compositions, polyurethane foams, and refrigeration equipment, relating to the field of polyurethane technology. The polyether polyol is a block copolymer composed of polyoxypropylene, polycaprolactone, and polycyclohexene oxide linked by chemical bonding, wherein the polyoxypropylene acts as the front block, the polycaprolactone as the inner block, and the polycyclohexene oxide as the terminal block. This application utilizes a complementary performance mechanism among the polyether segments to achieve a polyurethane foam that combines low thermal conductivity, high strength, and low viscosity while improving its low-temperature stability.

The application discloses an anti-aging and anti-corrosion power cable structure and belongs to the technical field of power cables. The cable comprises, from inside to outside, an anti-corrosion conductor layer, a conductor shielding layer, a nano-composite insulation layer, an insulation shielding layer, a water-blocking and anti-corrosion buffer layer, an armored protection layer and a double-layer anti-aging sheath layer. The anti-corrosion conductor layer adopts a tinned copper stranded wire or an aluminum alloy stranded wire; the nano-composite insulation layer takes cross-linked polyethylene or ethylene-propylene rubber as a matrix; the water-blocking and anti-corrosion buffer layer is composed of an intumescent water-blocking tape and an asphalt-based anti-corrosion paste; the armored protection layer adopts a duplex stainless steel tape or a galvanized aluminum alloy tape; and the double-layer anti-aging sheath layer is co-extruded by an inner layer of high-density polyethylene and an outer layer of polyether polyurethane. The application remarkably improves the anti-aging, salt-fog resistance, acid and alkali resistance and electrical insulation performance of the cable through the multi-layer composite protection and nano-modification structure, and prolongs the service life of the cable in harsh environments such as coastal areas, chemical industries and underground acid and alkali soils.

This application discloses a combined polyether, a polyurethane composition, a polyurethane foam, and a refrigeration device. The combined polyether comprises a polyether polyol and a filler, wherein the filler comprises an epoxy-based cage-like polysilsesquioxane; wherein at least one organic side chain attached to the silicon atom of the epoxy-based cage-like polysilsesquioxane contains an epoxy group, and at least one epoxy group is located at the end of the organic side chain. The combined polyether provided in this application, by adding an epoxy-based cage-like polysilsesquioxane as a filler, achieves molecular-level dispersion by forming covalent bonds with the hydroxyl groups of the polyether polyol and the -NCO groups of the isocyanate, due to the epoxy active groups contained in this filler. This prevents the thermally conductive filler from agglomerating and migrating. Furthermore, the cage-like structure of the epoxy-based cage-like polysilsesquioxane can effectively capture gas molecules inside the polyurethane foam, inhibiting gas heat conduction and significantly reducing the thermal conductivity of the polyurethane foam at low temperatures.

The application relates to the technical field of cable materials, and discloses a high-strength oil-resistant cable material and a preparation method thereof; the preparation method comprises the following operation steps: mixing polyether polyurethane resin and butyronitrile rubber at 70-90 DEG C for 3-6 minutes, adding modified microcapsules, an antioxidant, an ultraviolet absorber and a lubricant to continue mixing, and extruding and granulating at 120-160 DEG C to obtain the high-strength oil-resistant cable material. In the scheme, in order to solve the problem that the oil resistance of the cable material is affected by the poor compatibility of the polyphosphate flame retardant with the polyurethane resin due to the strong hydrophilicity of the polyphosphate flame retardant, the polyphosphate flame retardant is made into hydrophobic coated aluminum polyphosphate, and the microcapsules are prepared by taking the hydrophobic coated aluminum polyphosphate as a core material, so that the network compactness of the microcapsules is improved, and the oil resistance and the strength of the cable material are improved.

The present invention provides a photosensitive resin composition having an excellent dry-to-touch property and an excellent drying management range, from which composition a cured product having excellent heat resistance, good thermal-shock resistance (flexibility), good external-impact resistance, a high reflectivity, and excellent discoloration resistance can be obtained, and a dry film, a cured product, and an electronic component obtained from the composition. The photosensitive resin composition is composed of a resin composition of at least a bi-component system, and comprises (A) a carboxyl-containing resin, (B) a difunctional polyether polyurethane acrylate, (C) a photosensitive monomer, (D) a photopolymerization initiator, (E) an antioxidant, and (F) an epoxy resin. Relative to 100 parts by mass of the (A) carboxyl-containing resin on a solid basis, the amount of the (B) difunctional polyether polyurethane acrylate is greater than 1.2 parts by mass and less than 11 parts by mass.

This invention discloses a separator and a battery, relating to the field of secondary battery technology. The separator includes a base membrane and a coating layer disposed on at least one side of the base membrane. The coating layer includes a first functional material, a second functional material, and a first binder. The first functional material includes at least one of lithium polyacrylate, styrene-acrylate copolymer, and polyether polyurethane. The second functional material includes lithium acrylate-acrylonitrile copolymer. This invention addresses the problem in the prior art of poor interfacial adhesion stability between the separator and the electrode sheet, which easily leads to wrinkle formation and deterioration of cycle life.

The application discloses a wave-absorbing rubber and a preparation method thereof, and the preparation method comprises the following steps: S1, mixing a first wave-absorbing agent, a first coupling agent, a first lubricant and a first solvent to obtain a first mixture, and sequentially performing ball milling, filtering and drying on the first mixture to obtain a first modified wave-absorbing agent; mixing a second wave-absorbing agent, a thermoplastic phenolic resin, a curing agent, a second coupling agent and a second solvent to obtain a second mixture, and sequentially performing stirring, filtering and drying on the second mixture to obtain a second modified wave-absorbing agent; S2, uniformly mixing polyether polyurethane, polyester polyurethane, a second lubricant, a plasticizer, a reinforcing agent, a crosslinking agent, the first modified wave-absorbing agent and the second modified wave-absorbing agent to obtain a wave-absorbing rubber compound; S3, performing calendering on the wave-absorbing rubber compound to obtain a green rubber sheet; and S4, performing heating and pressurizing vulcanization on the green rubber sheet to obtain the wave-absorbing rubber.

The application relates to the technical field of solar cells, and mainly provides a photovoltaic module. The photovoltaic module comprises, in sequence, a front plate glass, a first polyurethane adhesive film, a solar cell, a second polyurethane adhesive film and a back plate glass; wherein the polyurethane of the first polyurethane adhesive film and the second polyurethane adhesive film respectively and independently comprises one or both of aliphatic polyether polyurethane and aliphatic polyester polyurethane. The photovoltaic module in the technical scheme has good chemical resistance, cold resistance, low-temperature resistance and impact resistance, and can ensure that the photovoltaic module has long-term stability and good impact resistance in cold regions.

This invention belongs to the field of adhesive technology, specifically relating to a temporary protective UV adhesive, its preparation method, and its application. The temporary protective UV adhesive provided by this invention contains silane-terminated polyether polyurethane acrylic resin, monomer diluent, photoinitiator, and optionally fumed silica. By using a silane-terminated polyether polyurethane acrylic resin with a specific structure as the resin in the UV adhesive, this invention not only enhances the water resistance of the UV adhesive but also improves its adhesion strength to the substrate and imparts good toughness. Compared to existing UV hydrolyzable adhesive products on the market, the temporary protective UV adhesive provided by this invention has higher adhesion strength, higher toughness, stronger water resistance, and is easily hydrolyzed after acid washing, thus enhancing the temporary protective effect of the UV adhesive in precision electronic processing.

The present application relates to the technical field of fabric coating, and discloses a waterproof and breathable fabric coating and a preparation method thereof.The waterproof and breathable fabric coating comprises the following raw materials in parts by weight: polyether polyurethane resin 40-50 parts, modified thermal expansion microspheres 5-10 parts, hollow glass microbeads 4-6 parts, modified waterproof agent 8-12 parts, sodium dodecyl sulfate 0.5-1 part, lignocellulose 5-7 parts, silane coupling agent KH-560 3-4 parts, filler 1-3 parts, anti-aging agent 2-4 parts, and ethanol 25-30 parts.The modified waterproof agent can effectively block the penetration of water, avoiding problems such as fabric wetting, water seepage and mildewing when the fabric is exposed to water.The modified thermal expansion microspheres can improve the air permeability of the coating, solving the defects of traditional waterproof coatings, such as poor air permeability and poor wearing comfort.

The application provides a regenerated polyol, a combined polyether, a polyurethane composition, a polyurethane foam and a preparation method thereof. The regenerated polyol is prepared by the following method: waste PET raw materials, alcoholysis agent and alcoholysis catalyst are mixed and subjected to alcoholysis reaction to obtain PET alcoholysis product; the PET alcoholysis product is subjected to esterification reaction with organic acid anhydride at a mass ratio of 1:(0.08-0.12) to obtain regenerated polyol with a hydroxyl value of 300 mgKOH / g-350 mgKOH / g. The application realizes accurate control of the hydroxyl value of the regenerated polyol, which is similar to the hydroxyl value of the traditional petroleum-based polyether polyol, and the reaction activity of the regenerated polyol and isocyanate is highly matched, so that the substitution rate of the regenerated polyol to the traditional petroleum-based polyether polyol can be improved, the raw material cost is significantly reduced, efficient recycling of waste PET is realized, and economic and environmental values are combined.

The utility model belongs to underwater cable technical field discloses a kind of bending-resistant underwater cables, including conductor, insulating layer, sheath layer and protective layer, conductor is formed by multiple copper wire strands multilayer complex twisting, and the complex twisting direction of each layer copper wire strand is same, copper wire strand is formed by multiple tinned copper wire bundle twisting, insulating layer is coated in the outer periphery of conductor, sheath layer is coated in the outer periphery of insulating layer, protective layer is coated in the outer periphery of sheath layer, the material of protective layer is polyether polyurethane elastomer, shore hardness is (A80-D70).The bending-resistant underwater cable provided by the utility model has pressure resistance and flexibility simultaneously, when bending laying, it can be quickly laid, reduce the degree of difficulty of laying, simultaneously, it can effectively reduce the degree of stress concentration at bending, the risk of fracture at bending is low, and it can stably transmit electric energy.

The present invention relates to a dimensionally stable adhesive compound formulated to be largely solvent- and water-free, which can be applied to the substrate to be bonded by sweeping it onto the substrate in the form of a thin adhesive film, particularly suitable for bonding materials made from plant fibers. The organic constituent of the adhesive compound according to the invention consists predominantly of a mixture of polyether polyurethanes end-protected with at least two monohydric aliphatic alcohols of different chain lengths. The invention also relates to a method for applying a sticky film to a planar substrate, preferably paper, by sweeping the adhesive compound onto the point of contact with the substrate.

This invention discloses an enzyme-catalyzed stabilized teeth whitening and bleaching composite composition and its preparation method, relating to the field of teeth whitening technology. The composition comprises three components: a whitening gel, a catalyst, and a light-cured gingival barrier resin, which synergistically achieve teeth whitening and bleaching. The whitening gel contains hydrogen peroxide, carbomer, propylene glycol, a stabilizer, water, and sodium hydroxide. The catalyst contains propylene glycol, catalase, carbomer, glycerol, sodium hydroxide, sodium benzoate, purified water, and fragrance. The resin contains polyether polyurethane methacrylate, 1,6-hexanediol dimethacrylate, triethylene glycol dimethacrylate, camphorquinone, ethyl p-dimethylaminobenzoate, tert-butylhydroquinone, fumed silica, pigment, fragrance, and MIG-type silica. This invention utilizes enzyme catalysis to achieve natural-looking whitening; the whitening gel is stable during storage and does not easily dilute or release water; the resin cures gently and has a flexible texture; and the process is controllable, making it suitable for industrial production and clinical teeth whitening treatment.