93 results about "Polyether polyurethane" patented technology

The invention particularly relates to colored dual-curing UV paint and a preparation method thereof. The UV paint is prepared from the following raw materials in parts by weight: 15 to 20 parts of trifunctional aliphatic polyurethane acrylic resin, 12 to 16 parts of organic silicon modified polyurethane acrylate prepolymer, 5 to 8 parts of polyether type polyurethane acrylate, 10 to 15 parts of organic silicon-acrylic hybrid resin, 4 to 9 parts of blocked isocyanate, 15 to 25 parts of diluent and 1 to 3 parts of pigment. 3-6 parts of amino modified silicon dioxide, 1-3 parts of a photoinitiator and 0.1-0.3 part of a flatting agent. According to the UV paint, the adhesion, high wear resistance, weather resistance and hydrolysis resistance of the UV paint are remarkably improved by compounding multiple resins and a processing aid, the production efficiency is improved through a dual-curing mechanism combining UV curing and thermocuring, and meanwhile, complete curing and durability of the UV paint are guaranteed; in addition, VOCs emission is greatly reduced, and the low-VOCs environmental protection requirement is met.

The invention discloses macromolecular antibacterial artificial leather and a preparation method thereof, and relates to the technical field of artificial leather preparation. The preparation method comprises the following steps: preparing zinc-loaded silicon dioxide with amino grafted on the surface and quaternized polyether polyurethane containing an epoxy group, mixing the zinc-loaded silicon dioxide and the quaternized polyether polyurethane to prepare antibacterial protection slurry, and bonding the zinc-loaded silicon dioxide and the quaternized polyether polyurethane through ring-opening reaction of the amino and the epoxy group during curing to form a cross-linked network, so as to obtain the antibacterial protection layer with antibacterial property, flexibility and wear resistance; zinc ions have an obvious inhibiting effect on bacteria such as gram-positive bacteria and gram-negative bacteria and fungi such as candida albicans, quaternary ammonium salt has an obvious inhibiting effect on influenza viruses, and the zinc ions and the quaternary ammonium salt have a synergistic effect, so that the antibacterial range of the artificial leather is wider, the inhibiting force on germs is stronger, and the antibacterial property of the artificial leather is further improved.

The invention provides premixed polyether polyol, a polyurethane composition, polyurethane foam, a preparation method of the polyurethane foam and refrigeration equipment. The combined polyether comprises a component A, the component A comprises composite modified polyether polyol, and the composite modified polyether polyol contains an alicyclic group and a star-shaped branched siloxane chain segment. The polyurethane foam has relatively high strength and relatively low heat conductivity coefficient under the condition of low density, so that the polyurethane foam can simultaneously meet the comprehensive requirements of low density, low heat conductivity coefficient and high strength.

The invention discloses a polyether polyurethane solid polymer, a preparation method thereof and application of the polyether polyurethane solid polymer in a solid electrolyte, and belongs to the technical field of polymer electrolytes and preparation of the polymer electrolytes. The problems that an existing solid polymer electrolyte is low in ionic conductivity and poor in interface stability are solved. According to the invention, polyether amine and cyclic carbonate are subjected to an in-situ polymerization reaction to synthesize a series of polyether polyurethane solid polymer electrolytes with different molecular weights and monomer proportions. The obtained polyether polyurethane solid polymer electrolyte contains rich carbamate groups, hydroxyl groups, fluorine ions and the like, and can form a strong reversible hydrogen bond network, so that the electrolyte has excellent mechanical properties, can be used as a self-supporting electrolyte membrane, and does not need an additional diaphragm. Meanwhile, a large number of dynamic reversible hydrogen bonds also enable the solid polymer electrolyte to have excellent self-healing ability, and can be self-repaired when the battery is damaged by external force in the operation process, so that the structural stability of the solid polymer electrolyte is remarkably improved.

The invention discloses a soft and light cable for ocean engineering, and belongs to the technical field of ocean engineering, a sheath adopts a double-layer polyurethane structure, modified aramid fibers are embedded between inner and outer layers of polyurethane to serve as a reinforcing layer, and the modified aramid fibers are formed by generating oxygen-containing polar groups on the surfaces of the aramid fibers through surface modification. The modified aramid fiber and the polyurethane form chemical bonding in the processing process, and the sheath is made of thermoplastic polyether polyurethane elastomer; the interface bonding strength between the sheath material and the modified aramid fiber woven material is high, different use environments can be better adapted, the inner and outer sheath structures are not easy to move, and the inner material is better protected. The sheath is made of polyurethane, and the polyurethane has high tensile strength, wear resistance and tear resistance and can bear mechanical stress and impact in the marine environment.

The present invention provides a method for recovering ε-caprolactam and polyether polyurethane from a material comprising nylon 6 and polyether polyurethane in a plant, wherein the plant comprises a separation section [B], a depolymerization section [C], a recovery section [D], and a purification section [E].

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 belongs to the field of graphene fiber processing technology, and relates to a two-step sizing process for graphene fibers. The sizing agent used in the first sizing step is denoted as sizing agent A, and the sizing agent used in the second sizing step is denoted as sizing agent B. Sizing agent A comprises a cationic polyether polyurethane slurry, a volatile ester co-solvent, and water; sizing agent B comprises a cationic polyether polyurethane slurry, a lubricant, and water. The lubricant is one or more of the following: polyether-modified polydimethylsiloxane, polyether-modified heptamethyltrisiloxane, oxidized polyethylene wax emulsion, polytetrafluoroethylene emulsion, and polyethylene glycol monooleate. After sizing, a polyurethane film layer forms on the fiber surface, which can absorb and disperse stress, improve bundle strength, bending performance, and abrasion resistance, solve the problems of fiber breakage and flyaways, and simultaneously fill the gaps between fibers, improving electrical and thermal conductivity to meet the requirements of high-speed weaving processing.

The invention relates to the technical field of synthetic leather, in particular to automotive leather with high bio-based content and a preparation method thereof.The preparation method comprises the steps that ammonium polyphosphate modified chitosan and nano-montmorillonite are mixed, a hydrogen bond inhibitor is added to obtain flame-retardant composite filler, the flame-retardant composite filler, a hydrophilic copolymer, a dispersion system and a part of a polar organic solvent system are mixed, and the automotive leather with the high bio-based content is obtained. Carrying out rotating speed dispersion treatment to prepare flame-retardant pre-dispersed master batch; mixing the flame-retardant pre-dispersed master batch, the balance of polar organic solvent system and polyether type polyurethane resin to form wet-process slurry, coating the wet-process slurry on the velveteen-like base cloth layer, and feeding the wet-process slurry into a coagulating bath for phase separation to form a wet-process microporous layer; coating the release base material with the surface layer slurry, drying to form a dry surface layer, coating the bonding layer slurry, and carrying out semi-drying to form a dry bonding layer; the wet-process microporous layer and the dry-process bonding layer are subjected to hot-pressing lamination, curing treatment is performed after the release base material is separated, and the synthetic leather is obtained.According to the synthetic leather, excellent flame retardance, moisture permeability, durability and environmental protection performance of the leather for the automotive trim are achieved.

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 invention provides a foaming agent composition, premixed polyether polyol, a polyurethane composition, polyurethane foam and refrigeration equipment. The foaming agent composition comprises a foaming agent and a foam stabilizer, the foaming agent comprises bio-based cyclopentane and a CO2-based foaming agent, and the foam stabilizer comprises a bio-based siloxane-polyether copolymer. The environment-friendly property of the polyurethane foam can be improved.

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.

An oral surgical retraction article comprises a polyester or polyether polyurethane foam sponge, or a combination thereof, that is sterilizable and has a porosity between not less than 45 pores per inch (ppi) and not more than 105 ppi and configured in size and shape for retracting a gingival flap during an oral surgery.

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.

The present application relates to the technical field of polishing pad, and discloses a white pad for rough polishing of wafer surface and a manufacturing method, which solves the problem of polishing precision decline caused by aging and wear in the prior art. A double-layer composite structure is adopted, the surface layer is a closed-cell foam structure, is used for storing polishing liquid and realizing flexible grinding, and the material comprises polyether polyurethane resin, micron-sized wear-resistant filler and anti-aging component; the bottom layer is an open-cell foam structure, is responsible for efficient chip removal and heat dissipation, and comprises polyether polyurethane resin, heat-conducting filler and structural reinforcing fiber. The manufacturing process successively passes through raw material pretreatment, layered extrusion sheet, three-roll calendering compounding, edge strengthening coating, plasma surface treatment and cutting processing. Through double-layer functional partition design and material system optimization, the present application significantly improves the wear resistance, aging resistance and heat conductivity of the white pad, can adapt to conventional and special rough polishing conditions, prolongs the service life and guarantees the polishing precision, and is suitable for industrial application.

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 invention relates to the technical field of waterborne polyurethane coatings, and discloses a two-component high-wear-resistance waterborne polyurethane coating for paper package surface protection and a preparation method thereof. The water-based paint comprises the following components in percentage by adding: 20% of water-based matte polyurethane, 30% of a water-based acrylic polymer, 45% of water-based bright polyurethane, 0.5% of dimethylethanolamine, 0.3% of a water-based organic silicon defoaming agent, 1.5% of pasty ultra-high molecular weight polydimethylsiloxane dispersion liquid, 0.2% of a water-based organic silicon flatting agent, 2% of dipropylene glycol butyl ether, 0.2% of an organic tin drier and 0.2% of a Digao TEGO WET 270 base material wetting agent. And 0.4% of a polyether polyurethane associated rheological additive with 25% of active parts. The problems that a traditional paper package surface protection technology is long in degradation period, poor in environmental protection property and low in quality are effectively solved.

The invention discloses premixed polyether polyol for continuous production of LNG (liquefied natural gas), polyurethane foam and a preparation method of the premixed polyether polyol. The premixed polyether polyol comprises the following raw materials in parts by weight: 80-105 parts of composite polyol; 3-5 parts of a nano reinforcing agent; 2-4 parts of a composite catalyst; 2-4 parts of a foam stabilizer; 20-30 parts of a physical foaming agent; 1.0-2.0 parts of a chemical foaming agent; and 20-30 parts of a flame retardant. The polyurethane foam comprises the combined polyether and polymerized diphenylmethane diisocyanate, and is prepared by mixing the combined polyether and the polymerized diphenylmethane diisocyanate according to a certain proportion. According to the low-temperature-resistant, low-thermal-conductivity and high-strength polyurethane foam for the LNG, the combined polyether reacts with the isocyanate, and through the synergistic effect of the high-functionality polyether polyol, the polyester polyol and the nano reinforcing agent, the low-temperature-resistant, low-thermal-conductivity and high-strength polyurethane foam for the LNG can be continuously produced; the density is uniform; the heat conductivity coefficient is low; and the strength is high.

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.

The present application relates to the technical field of composite floor manufacturing, and particularly relates to a light-weight high-strength composite floor and a manufacturing method thereof. The manufacturing method of the light-weight high-strength composite floor comprises the following steps: Step 1, uniformly mixing sawdust, fibers and silicon dioxide aerosol to obtain a solid mixture; uniformly mixing polyurethane A glue, epoxy resin and a curing agent to obtain a mixed solution; uniformly mixing a polyether polyurethane into the mixed solution to obtain mixed glue A; uniformly mixing the mixed glue A and the solid mixture to obtain A glue mixture; uniformly mixing polyurethane B glue and the A glue mixture to obtain a pressing mixture; Step 2, performing shaping and heat treatment on the pressing mixture to obtain the light-weight high-strength composite floor. The present application is simple in method, and raw materials are easy to obtain and easy to be prepared in large-scale industrialization. The composite floor prepared by the method has the performance of light weight and high strength, and can be applied to railway flat car floors.

This disclosure provides a leather surface coating, leather containing the surface coating, a method for preparing the same, and bags. The aforementioned leather surface coating comprises a surface-enriched silicone-modified polyether-polyurethane prepolymer, a liquid crosslinking agent, and a film-forming aid. The surface-enriched silicone-modified polyether-polyurethane prepolymer contains hydroxyl or amino groups, and none of the surface-enriched silicone-modified polyether-polyurethane prepolymer, the liquid crosslinking agent, or the film-forming aid contains organic solvents. This leather surface coating, by compounding the surface-enriched silicone-modified polyether-polyurethane prepolymer, the liquid crosslinking agent, and the film-forming aid, can produce leather that is VOC-free, more environmentally friendly, has suitable hardness, high density, excellent three-proof performance (waterproof, dustproof, and shockproof), good adhesion to leather, and is simple to produce, thus better suited for high-end and eco-friendly leather applications.

The invention provides premixed polyether polyol, a polyurethane composition, polyurethane foam, a preparation method of the polyurethane foam and refrigeration equipment. The combined polyether comprises polyether polyol, a fluoride-free foaming agent and a chain extender, and the chain extender comprises 1, 2, 6-hexanetriol, 1, 10-decanediol and 1, 3, 5-cyclohexanetriol. The heat conductivity coefficient of the polyurethane foam can be reduced under the condition that the fluoride-free foaming agent is used, and the requirement for balance of fluoride-free and low heat conductivity coefficients of the polyurethane foam is met.

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 invention discloses a polyurethane emulsion for UV (ultraviolet) ink-jet digital printing as well as a preparation method and application of the polyurethane emulsion. The preparation method of the polyether type polyurethane emulsion comprises the following steps: adding polyether polyol, isocyanate, a catalyst and polyfunctional group acrylate into an organic solvent, mixing and uniformly stirring, heating to a first temperature, and stirring for reaction to obtain a polyether type polyurethane solution; and cooling to a second temperature, sequentially adding deionized water, adjusting the pH value, and uniformly mixing to obtain the water-based polyether polyurethane emulsion. The low-polarity polyether polyurethane is selected as a main body material, the polyfunctional group acrylate is introduced to increase the binding force between the ink and the main body, the compatibility among the components can be improved, the leveling property of the UV ink can be improved, a high-quality cured film layer can be formed without additionally adding a leveling agent, the internal stress during UV curing film forming is reduced, and the UV curing film forming quality is improved. Therefore, surface defects such as white points and pinholes caused by shrinkage of film holes in the UV curing process are avoided.

Coating compositions and the use thereof are provided for the coating of substrates which provide increased and durable breathability and / or waterproofness to substrates coated with cured films produced therefrom. These increased benefits are achieved through the formation of cured coating films comprising polyurethane domains with specific polymers interspersed between the domains. The polyurethane and secondary polymer are able to interact to form these unique films through the selection of specific polymers with complimentary solvent characteristics coupled with specific attractions between the polyurethanes and polymers. Preferred polymers include polyethylenimine and anionic polyurethanes (e.g., polycarbonate polyurethanes, polycarbonate polyether polyurethanes, etc.).

The invention discloses a high-temperature-resistant and high-humidity-resistant polyurethane hot melt adhesive PUR (Polyurethane Resin) and a preparation method of the high-temperature-resistant and high-humidity-resistant polyurethane hot melt adhesive PUR. Comprising the following components in parts by mass: 80-100 parts of polyether polyurethane particles, 5-8 parts of hexagonal boron nitride nanosheets, 1-3 parts of hollow nano silicon dioxide, 3-5 parts of a hydrazide-based trapping agent, 1-2 parts of thermally activated microsphere epoxy resin, 0.5-1 part of zirconium aluminate and 5-10 parts of hydrogenated terpene resin. Through cooperation of multiple components, the high-temperature resistance and high-humidity resistance of the polyurethane hot melt adhesive PUR are improved, and the problems that in electronic equipment packaging, an adhesive layer is softened and fails due to high temperature, and molecular chains are hydrolyzed and fall off at high temperature due to high humidity are solved.

The invention provides a material dynamic mechanical behavior simulation method and system based on LS-DYNA, and relates to the technical field of material simulation analysis methods. The method comprises the following steps: compiling a viscous-hyperelastic constitutive mathematical model into a UMAT subprogram, and embedding the UMAT subprogram into a solver of LS-DYNA software; the method comprises the following steps: carrying out finite element mesh generation on a geometric simulation model of a high polymer material sample, and generating a k file according to the characteristics of a high polymer material, keywords of a defined UMAT subprogram and parameter assignment of a viscous-hyperelastic constitutive mathematical model; and calling a solver of the LS-DYNA software according to the keyword of the UMAT subprogram, and calculating a k file to obtain a simulation result. According to the method, the dynamic mechanical response of the high polymer material can be predicted with high precision, the simulation precision of LS-DYNA software is improved, and the method is widely applicable to dynamic response simulation of materials such as rubber, a polyurea coating and a polyether polyurethane solid propellant in an impact environment.

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.

The application discloses a kind of light PU foamed soles and preparation method thereof, belong to foamed sole technical field, the sole is significantly improved shock absorption and folding resistance by optimizing material formula and preparation process.The sole is composed of ethylene-vinyl acetate copolymer, ethylene octene copolymer, SBS thermoplastic elastomer, polyether polyurethane and other raw materials, and introduces specific shock absorbing additive.Preparation method includes steps such as banxie, mixing, foaming forming, by accurately controlling temperature, time and turning over times, ensure the uniform mixing of material and the full performance of crosslinking reaction.Compared with prior art, the sole of the application is outstanding in shock absorption and folding resistance, and has important practical application value and market prospect.