5796 results about "Polyol" patented technology

The invention discloses an easy-to-apply single-component polyurethane waterproof coating and a preparation method thereof, and belongs to the technical field of waterproof coatings. The easy-to-apply single-component polyurethane waterproof coating disclosed by the invention is prepared from the following raw materials: polyol, a plasticizer, a solid filler, isocyanate, a catalyst and a solvent, the polyol comprises polyether glycol and polyether triol; the plasticizer comprises acetyl tributyl citrate; the catalyst comprises a bismuth neodecanoate catalyst and a dimorpholine diethyl ether catalyst. According to the easy-to-apply single-component polyurethane waterproof coating disclosed by the invention, acetyl tributyl citrate is used for replacing traditional plasticizer chlorinated paraffin, and a bismuth neodecanoate catalyst and a dimorpholine diethyl ether (DMDEE) catalyst are compounded, so that the viscosity of the waterproof coating is effectively reduced, and construction is facilitated; meanwhile, the drying speed of the waterproof coating is increased.

An aqueous ultraviolet-absorbing resin emulsion, and an aqueous resin emulsion composition containing the emulsion is provided, wherein the emulsion is excellent in compatibility with a synthetic resin and light resistance. Also, the emulsion improves stability in blending with an aqueous emulsion of the synthetic resin, and prevents bleed out of the ultraviolet-absorbing resin on the surface of a coating film. Further, the aqueous ultraviolet-absorbing resin emulsion imparts excellent alkali or solvent resistance to a synthetic resin poor in alkali or solvent resistance. More specifically, an aqueous resin emulsion composition comprising (I) an aqueous ultraviolet-absorbing resin emulsion and (II) an other aqueous resin emulsion is provided, wherein the emulsion (I) is obtained by urethanizing (A) a polyol component having an ultraviolet-absorbing group {e.g., 1,1-bis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzeneethanol]methane}, (B) a polyol if necessary, (C) an alkyl or aryl dialkanolamine compound, and (D) an organic polyisocyanate in (E) an organic solvent, diluting the reaction mixture with (F) an organic solvent having a boiling point lower than 100° C. to give a resin solution, neutralizing the resin solution with (G) a neutralizing agent, and dispersing the resultant in water.

The invention provides a polyester polyol production method, a polyester polyol production device and application, according to the polyester polyol production method, single-stage gas-liquid separation in the prior art is improved, and at least two-stage series gas-liquid separation is carried out in the esterification reaction process, so that the total production time is shortened, the production efficiency is improved, and the production cost is reduced. By-products such as polyether can be effectively removed, and the product quality stability of the polyester polyol can be effectively improved.

The invention relates to a Fenton-like functional filler which is prepared from 10-20% of iron particles coated with a carbonized film, 10-20% of aluminum sulfate modified straw, 20-30% of PBAT-coated calcium peroxide, 20-30% of diatomite and 10-30% of an adhesive. A processing method of a Fenton-like functional filler comprises the following steps: uniformly mixing iron particles coated with a carbonized film, aluminum sulfate modified straws, PBAT-coated calcium peroxide and diatomite, then adding an adhesive, mixing isocyanate serving as the adhesive with polyol according to a volume ratio of 1: 5, and continuously and uniformly mixing; then the mixed raw materials are injected into a mold coated with a release agent in advance, the mold temperature ranges from 40 DEG C to 60 DEG C, the foaming curing time ranges from 15 min to 20 min, and the Fenton-like functional filler can be obtained. The invention relates to an application of a Fenton-like functional filler in constructed wetlands. The method has the beneficial effects that the method is not influenced by temperature, and the removal effect of the constructed wetland on nitrate nitrogen and refractory COD (Chemical Oxygen Demand) can be obviously enhanced.

The invention discloses an adhesive containing epoxy-terminated polyurethane epoxy resin as well as a preparation method and application of the adhesive. The adhesive comprises the following components in parts by weight: 10-15 parts of epoxy resin, 70-75 parts of epoxy-terminated polyurethane epoxy resin, 19-21 parts of an amine curing agent and 8-15 parts of heat-conducting filler, wherein the epoxy-terminated polyurethane epoxy resin is obtained by reacting a polyurethane prepolymer and epoxy resin, NCO of the polyurethane prepolymer and hydroxyl of the epoxy resin are subjected to an addition reaction, and after the reaction is finished, NCO of a system is eliminated by adopting a small-molecule epoxy compound; the polyurethane prepolymer is obtained by reaction of isocyanate and polyether polyol with flexible chain segments. According to the adhesive, the curing heat release peak value is reduced, the toughness is improved, meanwhile, the high strength is kept, the foaming problem is avoided, the defects that a traditional epoxy adhesive is high in heat release and poor in toughness are overcome, and the adhesive is suitable for the fields such as aerospace and electronic and electric appliances which have strict performance requirements.

The invention relates to a multi-effect bionic liposome transdermal repair carrier and a preparation method and application thereof.The multi-effect bionic liposome transdermal repair carrier comprises active ingredients and a nano-carrier, and the active ingredients comprise sialic acid, saccharomycetes / rice fermentation product filtrate, arginine / lysine polypeptide and vitamin E in the mass ratio of (1-10): (2-8): (0.1-1): (0.5-4); the nano-carrier is prepared from the following raw materials: phospholipid, an emulsifier, polyhydric alcohol and water. Compared with the prior art, the anti-aging, whitening and moisturizing composition has the advantages of enhancing skin moisturizing and anti-oxidation effects, promoting collagen synthesis and inhibiting tyrosinase to achieve remarkable anti-aging, whitening and moisturizing effects and the like.

The invention belongs to the technical field of conductive adhesives, and particularly relates to a salt-fog-resistant waterborne conductive adhesive and a preparation method thereof.The salt-fog-resistant waterborne conductive adhesive is mainly prepared from, by weight, 5-10 parts of salt-fog-resistant waterborne polyurethane; 5 to 10 parts of water-based tackifying resin; 30 to 50 parts of conductive silver powder; 10 to 20 parts of ethanol; 2-10 parts of an anti-hydrolysis agent; and 10-30 parts of deionized water. According to the salt-fog-resistant aqueous conductive adhesive, polyurethane resin with polytetrahydrofuran alcohol and polycaprolactone polyol as main structures is used as matrix resin, a system is endowed with excellent water resistance and salt-fog resistance, the salt-fog-resistant aqueous conductive adhesive shows outstanding hydrolysis-resistant stability after being cured, and the salt-fog-resistant aqueous conductive adhesive and the conductive silver powder have a synergistic effect, so that the anti-settling performance is effectively improved.

The invention relates to the field of wear-resistant materials, in particular to a high-melt-strength thermoplastic polyurethane elastomer and a preparation method thereof. The thermoplastic polyurethane elastomer with high melt strength is prepared from the following raw materials in parts by mass: 60 to 80 parts of a polyol agent, 25 to 40 parts of isocyanate, 6 to 12 parts of a chain extender, 5 to 15 parts of a melt reinforced composition, 3 to 6 parts of a polymerization additive, 0.05 to 0.15 part of an organic tin catalyst, 0.2 to 0.4 part of an antioxidant, 0.4 to 0.6 part of a hydrolysis stabilizer and 0.1 to 0.3 part of a coupling agent. The high-melt-strength thermoplastic polyurethane elastomer provided by the invention not only can have high melt strength, processability and mechanical properties, but also can keep good transparency, flexibility and other comprehensive properties, and the performance is prevented from being greatly sacrificed, so that the application environment of the thermoplastic polyurethane elastomer is ensured.

The invention belongs to the technical field of polyether polyol, and particularly relates to flame-retardant polyether polyol with a low heat conductivity coefficient as well as a preparation method and application of the flame-retardant polyether polyol. The flame-retardant polyether polyol with the low heat conductivity coefficient is obtained by polymerizing bis (2-hydroxyethyl) aminomethyl diethyl phosphonate, halogen-containing aniline and small molecular alcohol / alcohol amine as a ternary mixed initiator with alkylene oxide under the action of a catalyst, the ternary mixed initiator comprises the following components in percentage by mass: 12.15 to 22.78 percent of bis (2-hydroxyethyl) amino methyl diethyl phosphonate, 43.21 to 63.89 percent of halogen-containing aniline, and 23.96 to 34.01 percent of small molecular alcohol / alcohol amine. The polyether polyol realizes comprehensive properties of lasting flame retardance, high strength and low heat conductivity. The invention also provides a preparation method of the polyether polyol and application of the polyether polyol in rigid polyurethane foam.

The invention relates to the technical field of polyurethane acrylate, and particularly discloses dual-curing polyurethane acrylate resin and a preparation method thereof. Wherein the dual-curing polyurethane acrylate resin is prepared from the following raw materials: polyester polyol, polyether polyol, diisocyanate, hydroxyl acrylate, a chain extender, a photoinitiator, cardanol glycidyl ether, a polymerization inhibitor and modified nanoparticles. Wherein the citric acid and the polyethyleneimine are adopted to carry out synergistic modification on the nano particles, the dispersion stability of the nano particles is improved, so that the mechanical property of the resin is improved, the cardanol glycidyl ether and the photoinitiator generate a synergistic effect, and the resin can be quickly shaped through photocuring promoted by the photoinitiator; the cardanol glycidyl ether participates in the subsequent thermocuring reaction, so that the curing effect is improved, and the adhesive force between the film layer and the base material is enhanced.

Disclosed in the present invention are a reinforced polyurethane rigid foam material and a preparation method therefor, belonging to the technical field of high polymer materials. The material comprises: 5-10 parts of glass fiber yarn, 40-60 parts of an aromatic polyether polyol, 30-50 parts of an aromatic polyester polyol, 30-50 parts of toluene diisocyanate, 40-60 parts of polymethylene polyphenyl polyisocyanate, 5-10 parts of a flame retardant, 5-15 parts of a foaming agent, 1-5 parts of a catalyst and 1-5 parts of a surfactant. The present invention can achieve continuous production of the reinforced polyurethane rigid foam material and can improve the tensile property of the material by 20% or above and increase the utilization rate of glass fibers by 5% or above. The reinforced polyurethane rigid foam material can be widely applied to the field of liquefied gas storage and transportation.

The invention discloses a dynamic borate bond-based self-healing polyacrylic acid binder and a preparation method thereof. The dynamic borate bond-based self-healing polyacrylic acid binder comprises a polymer main chain and a dynamic cross-linking agent, the dynamic cross-linking agent is a polyol compound containing at least two pairs of ortho-hydroxyl groups; the polymer main chain is formed by copolymerizing the following monomers: an acrylic structural monomer, the molar fraction of which accounts for 85-94% of the total monomer; a functional monomer containing a boric acid group, wherein the molar fraction of the functional monomer accounts for 3-8% of the total monomer; the mole fraction of the flexible monomer containing the acrylate group accounts for 3-8% of the total monomer. Various stresses generated by different negative electrode materials in circulation can be effectively adapted and buffered through a network formed by dynamic boric acid ester bonds and reversible fracture and combination of the boric acid ester bonds, so that the service life of the battery is generally prolonged, the working temperature range of the battery can be remarkably widened, the low-temperature discharge capacity can be remarkably increased, and the high-temperature cycle life can be prolonged.

The invention discloses a high-modulus leather / eutectic gel composite electrolyte and a preparation method and application thereof, and belongs to the technical field of energy storage. The preparation method comprises the following steps: 1) preparing a eutectic gel solution containing polyvinyl alcohol, zinc salt, small molecular polyol and water; 2) carrying out vacuum impregnation to obtain leather fibers containing a eutectic gel solution; and (3) obtaining the leather / eutectic gel composite electrolyte with the imitated reinforcing steel bar-concrete structure through freeze-thaw circulation.The composite electrolyte effectively solves the problem that an existing gel electrolyte is low in modulus and difficult to effectively deal with extreme mechanical deformation, and the cycle life of the water-based zinc ion battery is remarkably prolonged.

The invention belongs to the technical field of flame-retardant polyether polyol, and particularly relates to a preparation method and application of multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol. The preparation method of the multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol comprises the following steps: taking phosphorus-containing polyether polyol and a nitrogen-containing compound as composite initiators, and carrying out polymerization reaction on the phosphorus-containing polyether polyol and the nitrogen-containing compound and an epoxy compound under the self-catalysis action to obtain the reaction type anti-dripping flame-retardant polyether polyol. According to the preparation method of the multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol provided by the invention, phosphorus, nitrogen and chlorine elements are embedded into the polyether polyol by constructing a ternary synergistic system, so that the problems of poor compatibility, migration and precipitation of an externally added flame-retardant system are solved; in the preparation process, low-cost bio-based phytic acid is adopted as a raw material, no catalyst needs to be introduced, the operation is simple, the prepared polyether polyol is used for preparing a waterborne polyurethane film, the flame-retardant characteristic of the material is improved, and meanwhile, the good anti-dripping characteristic is achieved.

The invention discloses a bacillus coagulans feed additive and a preparation method thereof, and relates to the technical field of feed additives, the bacillus coagulans feed additive comprises bacillus coagulans spores, the content of the spores is 1.0 * 10 < 8 >-1.0 * 10 < 11 > CFU / g; the protective agent system comprises the following components: maltodextrin or lactose, vegetable protein, polyhydric alcohol and an antioxidant; the invention discloses a microcapsule coating structure. A microcapsule is a two-layer composite coating of an inner layer alginate matrix and an outer layer polycation or polymer coating. According to the invention, bacillus coagulans spores which can still keep high survival rate under short-time high-temperature and low-pH conditions are obtained through screening and fermentation strategies of strains with high sporulation and heat and acid tolerance, the problem that common strains are easy to inactivate in granulation, extrusion and gastric acid environments is solved, the problem of product failure caused by insufficient tolerance of the strains is reduced, and the product quality is improved. And the original biological activity basis is improved, so that the protection effect of the subsequent formula and the coating can be played at a higher starting point, and the zoology effect of the final preparation is improved.

The invention discloses a bio-based flexible cementing material and a cold-mix asphalt mixture, and relates to the field of adhesives. The bio-based flexible cementing material comprises 80-85 wt% of a component A and 15-20 wt% of a component B, the component A comprises bio-based polyol, natural asphalt, natural rubber, a tackifier and a bio-based plasticizer according to a weight ratio of (160-180): (45-55): (75-85): (140-160): (380-410), and the component B is an isocyanate cross-linking agent. The bio-based flexible cementing material is used as a cementing material of a cold-mixed asphalt mixture, can be directly constructed at low temperature or normal temperature, does not need to be heated to improve the flowability, is convenient to construct, can form a stable skeleton structure through crosslinking, and can form a stable structure under the cooperation of natural rubber and natural asphalt. The bio-based flexible cementing material has both high temperature resistance and low temperature resistance, and the stability of a road structure can be improved.

The invention relates to the technical field of polyurethane impermeable materials, and particularly discloses a high-molecular impermeable material with oil resistance and impermeability as well as a preparation method and application thereof, and the high-molecular impermeable material comprises the following components in parts by weight: 120 parts of a polyurethane prepolymer, 20-45 parts of a diluent, 10-30 parts of an auxiliary agent, 15-20 parts of a micro-powder filler, 10-15 parts of carboxymethyl cellulose and 3-8 parts of dibasic hydrogen phosphate; wherein the polyurethane prepolymer is prepared from a diisocyanate compound and polyether polyol through a reaction; wherein the micro powder filler is a mixture of sodium acrylate hydrogel micro powder and sodium alginate hydrogel micro powder; wherein the dibasic hydrogen phosphate is monovalent ion salt. The high-molecular anti-seepage material has excellent anti-seepage performance in an oil storage environment, has relatively high adhesive force, and can be suitable for grouting in a humid environment; and water resistance and oil resistance of an underground water-sealed stone cavern oil depot environment can be better realized.

The invention discloses high-resistance self-extinction waterborne polyurethane resin as well as a preparation method and application thereof, the preparation method comprises the following steps: S1, uniformly mixing polymeric polyol, a catalyst, a carboxylate hydrophilic chain extender and a micromolecule chain extender to obtain a mixed system; s2, diisocyanate is added into the mixed system in the step S1 for a reaction, and an addition product is obtained; s3, after the addition product obtained in the step S2 is cooled to the room temperature, adding an organic solvent, and then adding a neutralizer for neutralization to obtain a waterborne polyurethane prepolymer; s4, a sulfonate chain extender is added into the waterborne polyurethane prepolymer prepared in the step S3 for reaction, water is added for emulsification, and waterborne polyurethane emulsion is obtained; and S5, dispersing an amine chain extender with water, adding the dispersed amine chain extender into the waterborne polyurethane emulsion obtained in the step S4, and carrying out a reaction so as to obtain the high-resistance self-extinction waterborne polyurethane resin. According to the preparation method, function integration is realized, the production process is simplified, and the production efficiency is improved.

The invention discloses a lipophilic liposome containing polydeoxyribonucleotide as well as a preparation method and application of the lipophilic liposome. The lipophilic liposome comprises the following components in parts by weight: 0.001-3 parts of polydeoxyribonucleotide; 0.5 to 3 parts of phospholipid; 0.1-2 parts of a cationic emulsifier; 0.1-3 parts of an anionic emulsifier; 40 to 70 parts of polyol; the total amount is 100 parts. According to the invention, an emulsifier system formed by combining lecithin with anionic and cationic compound surfactants is adopted, so that the transdermal absorption of PDRN is facilitated. The lipophilic liposome containing polydeoxyribonucleotide prepared by the invention can effectively resist nuclease degradation, prolong the acting time of PDRN in skin, and improve the skin anti-aging and repairing effects of the liposome. The anti-aging effect of the active ingredients is improved, and the bioavailability of the active ingredients is improved. The cosmetic composition can be widely applied to cosmetic formulas of various dosage forms.

The invention discloses a flame-retardant thermoplastic polyurethane elastomer material and a preparation method thereof, and belongs to the technical field of modified nano materials. The preparation method comprises the following steps: dissolving melamine, phytic acid and boron nitride in deionized water, carrying out oil bath, adding a coupling agent, stirring, carrying out vacuum filtration, washing with water, and drying to obtain a layered nano flame retardant; the preparation method comprises the following steps: dispersing a flame retardant in deionized water containing a nonionic dispersant, and carrying out ultrasonic treatment; the preparation method comprises the following steps: reacting polyether polyol with diisocyanate to obtain a primary prepolymer; adding other auxiliary agents, stirring, and carrying out gradient heating polymerization; and injecting into a mold, curing for 6-12 hours at 105-125 DEG C, and drying for 12-24 hours at 80-90 DEG C. A phosphorus-nitrogen-silicon ternary synergistic flame-retardant system is introduced, the boron nitride nanosheet surface grafting and dynamic pre-polymerization-gradient heating process is optimized, the dispersity is improved, and smoke suppression and thermal stability are achieved. Compared with the prior art, the flame retardant efficiency is high, the mechanical property is excellent, and environmental friendliness is achieved.

The invention relates to a particulate composition comprising, or substantially consisting of, urea, an inhibitor, preferably a urease inhibitor and / or a nitrification inhibitor, and an additive, wherein the additive comprises components (i), (ii), and optionally (iii): (i) one or more polyhydric alcohols; preferably one or more carbohydrates, preferably selected from monosaccharides, disaccharides, and oligosaccharides; (ii) a first polymer, preferably an amine-containing polymer; more preferably a polyvinylamine or a polyalkyleneimine; and (ii) optionally, a second polymer, preferably a polar polymer; more preferably a water-soluble polar polymer. The invention further relates to a process for producing the particulate composition, an additive for a particulate composition, and the use of the particulate composition as a fertilizer.

The invention belongs to the technical field of functional finishing of textiles, and particularly relates to microcapsule emulsion with a pH indicating function, preparation of the microcapsule emulsion and application of the microcapsule emulsion in a textile finishing agent. The invention provides a preparation method of a microcapsule emulsion with a pH indication function, which comprises the following steps: reacting isocyanate with polyol to obtain a polyurethane prepolymer, mixing and dissolving the polyurethane prepolymer with a pH indicator solution, an acrylate monomer and an initiator to obtain an oil phase, and taking an aqueous solution of a polymer emulsifier as a water phase; then mixing and emulsifying the oil phase and the water phase, adding a chain extender, heating to carry out chain extension reaction, cross-linking to a certain degree to form a polyurethane-polyurea-polyacrylate hybrid shell layer on an oil-water interface, and coating a core material pH indicator to obtain the microcapsule emulsion with the pH indication function. According to the invention, the pH indicator is coated in the form of microcapsules for the first time, and industrial production and processing can be carried out.

The invention belongs to the technical field of polyurethane resin, and provides polyurethane resin, polyurethane synthetic leather and a preparation method and application thereof. The preparation raw materials of the polyurethane resin comprise the following components: 9%-23% of first bio-based polyol, 3%-18% of a polyurethane intermediate, 0.005%-0.02% of a first antioxidant, 0.001%-0.003% of a first catalyst, 3-6% of first isocyanate, 0.5%-2% of a first chain extender, 0.01%-0.05% of a first terminator, 0.01%-0.05% of a first anti-visbreaking aid, 0.7%-2.2% of an astringent aid, 0.5%-3% of a polyether aid and 50%-70% of a first solvent. The first bio-based polyol includes a bio-based polytrimethylene ether glycol and a bio-based polycarbonate glycol. The preparation raw materials are all derived from bio-based materials, and the polyurethane synthetic leather is soft in texture, good in astringent feeling and excellent in strength and hydrolysis resistance.

The invention relates to the technical field of polyurethane, in particular to a preparation method of a two-component polyurethane pouring sealant for a filter. Comprising a component A and a component B, the component A comprises polymerized MDI and a plasticizer, and the component B comprises, by weight, 3-5 parts of castor oil, 5-20 parts of polyether polyol, 10-30 parts of an acrylate oligomer, 40-60 parts of a filler, 5-10 parts of a molecular sieve, 1-5 parts of color paste and 0.01-0.5 part of an auxiliary agent. The pouring sealant prepared by compounding the castor oil, the polyether polyol and the acrylate oligomer according to a specific ratio has excellent tensile strength, shear strength and high-temperature aging resistance.

The invention relates to the related technical field of daily chemical skin care products, in particular to a water aqua solution for scalp care and a preparation method thereof.The water aqua solution is prepared by mixing multiple raw materials in sequence, and the multiple raw materials comprise, by concentration, 0.005% of mixed cytokines, 0.005% of auxiliary agents and the balance water. The addition amount of the vitamin B12 is 0.00006%; the addition amount of allantoin is 0.2%; the addition amount of nicotinamide is 0.7%; the adding amount of the chamomile extracting solution is 5%; the adding amount of the aloe extracting solution is 5%; the addition amount of the ginkgo biloba extract is 5%; the addition amount of the lucid ganoderma extracting solution is 5%; the addition amount of the polyol preservative is 1%; the total percentage is 100%; according to the application, the mixed cell factors, the vitamin B12, the allantoin, the nicotinamide, the chamomile extracting solution, the aloe, the gingko, the lucid ganoderma, the polyol preservative and the water are mixed, so that the scalp absorption efficiency is improved, the safety of the product can be improved, and the maintenance effect is more obvious; the problems that an existing aqueous solution for skin curing is low in component action efficiency and insufficient in adaptability and safety are solved.

The present invention relates to the field of the preparation of polyurethane elastic fibers, and relates to a preparation method for a bio-based polyurethane elastic fiber, comprising: preparing polyether polyol from sucrose, glycerol, dimethylamine and propylene oxide; adding a solvent, i.e., N,N-dimethylacetamide, and polyether polyol and polyisocyanate into a reaction tank, and adding p-Toluenesulfonyl semicarbazide and aluminum methylenebis(2,4-di-tert-butylphenoxy) phosphate to prepare a spinning solution; and subjecting the spinning solution to spinning and oil application by means of dry spinning technology to obtain the bio-based polyurethane elastic fiber. The present invention ensures that the properties of polyurethane elastic fibers do not deteriorate or are partially enhanced, while the cost and performance advantages are achieved.

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 high-strength all-water-blown polyurethane foam and a preparation method thereof. The high-strength all-water-blown polyurethane foam comprises the following components in parts by weight: a polyol composite material: 100 parts of polyether polyol, 2-8 parts of water, 0.5-3 parts of an amine catalyst, 0.2-2 parts of a gel catalyst, 1-5 parts of an organosilicon surfactant, 3-8 parts of a composite filler and 0-10 parts of an auxiliary agent; wherein the composite filler is formed by coating the surfaces of glass beads with porous nano silicon dioxide; the isocyanate material is an MDI (Diphenyl Diisocyanate) or TDI (Toluene Diisocyanate) prepolymer, and the isocyanate index of the MDI or TDI prepolymer is 100 to 120 percent. The surface of the glass bead is coated with a nano silicon dioxide porous shell layer in situ to form a unique'hard core-soft shell 'gradient interface structure, so that the interface bonding force between the filler and a polyurethane matrix is improved, stress transfer is optimized, and the foam material is endowed with excellent comprehensive mechanical properties, especially compressive strength and structural stability.

The invention provides a resin composition, a magnetic film and application thereof. The resin composition comprises the following components: (A) magnetic filler, (B) epoxy resin, (C) a curing agent, (D) a flexibilizer and (E) polyester polyol, the number average molecular weight of the (E) polyester polyol is 2000 to 3000. According to the resin composition provided by the invention, through screening and synergistic compounding of specific components, the resin composition has relatively high magnetic conductivity and relatively low magnetic loss under high frequency after being cured, and meanwhile, the binding force with a copper layer is relatively high.

The invention discloses a waste polyurethane material recovery method and a preparation method of a polyurethane product, and belongs to the technical field of waste polyurethane material recovery and reutilization. The recovery method comprises the following steps: a powder preparation stage: crushing a waste polyurethane material by using crushing equipment to obtain polyurethane powder; a premixed liquid preparation stage: mixing polyurethane powder with a degradation agent, a catalyst and a cosolvent in proportion, and uniformly mixing through stirring equipment to obtain a premixed liquid with a certain powder content; in the degradation stage, equipment with a mechanical shearing and extruding function is used for grinding, extruding and shearing the premixed liquid, the reaction process is carried out within a set temperature range, and degradation mixed liquid of the polyurethane material is obtained after the reaction is completed. In the preparation method of the polyurethane product, a part of or all of the polyol raw material adopts a degradation mixed solution. According to the method, the degradation process is low in reagent consumption, low in temperature and short in time, does not need gas protection, and does not generate toxic substances such as aromatic amine, and the obtained high-performance heterogeneous polyhydric alcohol can be directly used for preparing polyurethane products without any post-treatment process.