53 results about "Polyol synthesis" patented technology

The invention belongs to the technical field of polyurethane, and particularly relates to a polyurethane material for coal rock mass and a preparation method of the polyurethane material. The polyurethane material for the coal rock mass is composed of a white material and a black material according to the mass ratio of 1: 1, and the white material comprises the following raw materials: mining polyether polyol, a flame retardant and a catalyst; the black material comprises the following raw materials: a prepolymer and a flame retardant. According to the polyurethane material for the coal and rock mass, hexahydroxy triphenylene with a star-shaped molecular structure is introduced into mine polyether polyol synthesis, a highly-crosslinked star-shaped structure is formed, rigidity and flexibility are balanced, and meanwhile the crosslinking density and compressive strength of a product are improved; secondly, bisphenol A with a benzene ring structure is adopted as a raw material for synthesizing the prepolymer, the toughness and strength of the material are improved through the interaction of benzene rings, and the prepared polyurethane material is high in compressive strength and low in reaction heat and meets the requirements of the polyurethane material for coal rock mass; the invention further provides a preparation method, and the preparation process is simple.

The invention belongs to the technical field of marine antifouling materials, and particularly relates to a marine antifouling polyurethane coating material based on zwitterionic resin and a synthesis method thereof.The synthesis method comprises the steps that the molar ratio R1 of isocyanato to hydroxyl is controlled to be 1.6-2.0, and a polyurethane prepolymer is synthesized through macromolecular polyol and aliphatic or alicyclic diisocyanate; the preparation method comprises the following steps: synthesizing zwitterionic polyol from N-methyldiethanolamine, triethanolamine, acid anhydride, sultone, a bisphenol compound and a polar solvent, then adding a prepolymer diluted by the polar solvent, and controlling the molar ratio of isocyanato hydroxyl to 1.6-2.0 to carry out chain extension so as to introduce a large amount of zwitterionic ions, thereby obtaining the product. The tensile shear strength of the coating is larger than 3.0 MPa, the 180-degree peel strength is larger than 10 N / cm, and the marine coupon antifouling performance score within 24 months is larger than 95. The zwitterionic polyol synthesis route raw materials are low in price and easy to obtain, the zwitterionic polyol is introduced into a polyurethane main chain, no organic or heavy metal ion antifouling agent needs to be added, the main chain contains hydrophilic and hydrophobic soft segment chains, the adhesion of an antifouling coating can be kept in dry and wet environments, and the anti-microbial effect of zwitterionic can be exerted; the marine antifouling paint has remarkable environmental protection and intrinsic long-acting marine antifouling characteristics.

The invention relates to the technical field of data processing, in particular to a polycaprolactone polyol synthesis path optimization method based on a genetic algorithm, which comprises the following steps: constructing an antagonism framework taking the genetic algorithm as a generator and a process stability discriminator; directionally generating virtual failure data by using a failure path deduction model so as to solve the problem of data sparsity and train a discriminator; quantifying the robustness risk of the candidate process parameters through a virtual disturbance unit, and taking the risk as a key part of a fitness function of the genetic algorithm; meanwhile, the interpretability analysis result of the discriminator is used for guiding the variation direction of the genetic algorithm. According to the method, the process path with high performance and high robustness can be found, and the industrial practicability and decision-making efficiency of an optimization result are remarkably improved.

The utility model provides a temperature control structure for synthesis processing of polyester polyol, which comprises a kettle body and is characterized in that a cover plate is arranged at the top of the kettle body, a feed port is fixedly mounted at the top of the cover plate, a discharge port is fixedly mounted at the bottom of the kettle body, a support frame is fixedly mounted on the outer surface of the kettle body, and the support frame is fixedly mounted on the outer surface of the kettle body. A temperature control mechanism is arranged on the surface of the kettle body, the temperature control mechanism comprises a heating cavity and an L-shaped rod, by arranging the temperature control mechanism, through heating of an electric heating wire and cooling water injected through a cooling water pipe, the temperature in the inner cavity of the kettle body can be conveniently regulated and controlled, and the convenience of temperature control in the inner cavity of the kettle body is improved; therefore, the temperature sensors can detect the temperatures of different areas of the kettle body, a plurality of temperature sensors required to be arranged when the temperatures of different horizontal heights of the kettle body are detected are saved, the equipment cost is reduced, and the detection range of the temperature sensors is expanded.

The utility model provides a vacuum dehydration device for polyester polyol synthesis, which comprises a vacuum dehydration box, a feed valve is fixedly mounted at the top of the vacuum dehydration box, a vacuum extraction valve is fixedly mounted on the right side of the top of the vacuum dehydration box, a discharge valve is fixedly mounted at the bottom of the vacuum dehydration box, and a discharge valve is fixedly mounted at the bottom of the vacuum dehydration box. An adjusting mechanism is arranged on the surface of the vacuum dewatering box, the adjusting mechanism comprises a rotating motor, a driving motor and a connecting rod, the rotating motor is fixedly installed at the top of the vacuum dewatering box, and the driving motor is arranged in an inner cavity of the vacuum dewatering box. The scraping plate is attached to the inner wall of the vacuum dewatering box, the situation that the scraping plate is continuously attached to the inner wall of the vacuum dewatering box, and consequently the abrasion degree of the scraping plate is large is effectively avoided, the service life of the scraping plate is prolonged, the scraping cost of the inner wall of the vacuum dewatering box is reduced, and an operator can use the scraping plate conveniently.

The invention belongs to the technical field of synthesis of polyester polyol, and particularly relates to bio-based polyester polyol based on waste polyester bottles and a preparation method of the bio-based polyester polyol. The bio-based polyester polyol based on the waste polyester bottles comprises the following components in parts by weight: 10-50 parts of PET (Polyethylene Terephthalate); 20 to 50 parts of bio-based polyol; 5-15 parts of vegetable oil; 10 to 30 parts of bio-based binary acid; 0.02 to 0.1 part of a catalyst; the PET is a waste polyester bottle chip. According to the invention, waste polyester bottles are introduced into an aliphatic bio-based polyol system, and a rigid structure of a benzene ring is introduced, so that the aliphatic bio-based polyol system can meet the requirements of rigid polyurethane foam; meanwhile, the bio-based content of the obtained product is as high as 60%-90%; in the preparation process, the emission of greenhouse gases can be effectively reduced, the petroleum consumption is reduced, the influence on the environment is reduced, and the method is more environment-friendly; the produced bio-based polyester polyol is used in rigid polyurethane foam, and has good dimensional stability and high strength.

The utility model discloses a polyester polyol synthesis device which is characterized by comprising a reaction kettle, a reaction kettle, a reaction kettle cover, a reaction kettle cover and a reaction kettle cover, and is characterized in that the reaction kettle is used for esterification reaction; a gas-phase pipeline and a liquid-phase pipeline are arranged above the reaction kettle, and the outlet end of the gas-phase pipeline is connected with a gas-phase inlet of a water distribution tower through a first tee joint; the outlet end of the liquid phase pipeline is connected with a liquid phase inlet of a water distribution tower; an outlet of the water distribution tower is provided with a condensation pipeline through a second tee joint, and the outlet end of the condensation pipeline is connected with a liquid inlet of the condenser; a liquid outlet of the condenser is connected with an inlet of the storage tank through a liquid outlet pipeline; a vacuum pipeline is connected to the first tee joint, and the other end of the vacuum pipeline is connected to the liquid outlet pipeline through a third tee joint; the second tee joint is connected with a shunting branch pipeline, and the other end of the shunting branch pipeline is connected to the gas phase pipeline through a fourth tee joint.

The invention relates to a process for the synthesis of a polymer of polyol, preferably glycerol, and polycarboxylic ester units, preferably dicarboxylic diester units, in particular sebacic diester units, in particular PGS, comprising the introduction of a heterogeneous basic catalyst. The invention also relates to a polymer obtainable by this process. The invention also relates to a polyester of polyol and dicarboxylic diester having a high average molar mass, a controlled degree of branching and the absence of trace metals.

A method for preparing and applying a composite polyurea anti-corrosion and thermal insulation material. This belongs to the field of chemical technology. It comprises two components, A and R. Component A includes 65-75 parts of a prepolymer synthesized from polyisocyanate and 25-35 parts of polyether polyol; component R includes 5-30 parts of a chain extender, 40-60 parts of terminal amino polyether, and 1-3 parts of a nano-modifier. Components A and R are mixed at room temperature. The composite polyurea anti-corrosion and thermal insulation material is layered and alternately sprayed with rigid polyurethane foam, and then compounded with a resin composite material to prepare a new high-strength composite material with single or multiple layers. It is the best thermal insulation material for corrosion protection and insulation of oilfield pipelines, oil storage equipment, and marine vessels.

The invention discloses a preparation method of polyether polyol for flatulence slow-rebound foam, and relates to the technical field of polyether polyol synthesis, and the preparation method comprises the following steps: S1, preparing an initiator: mixing glycerol and potassium hydroxide for reaction, dehydrating for 1-3 hours at 110-120 DEG C under vacuum condition to obtain potassium glycerol with the water content of less than or equal to 0.05%, and filtering to obtain the initiator; wherein the mass ratio of potassium hydroxide to glycerol is 1: (13-20); s2, carrying out two-stage polymerization reaction; and S3, refining treatment. In the middle stage of the reaction, the feeding proportion of the epoxide is changed, the proportion of the ethylene oxide is increased, and a non-ethylene oxide end-capping process is adopted to prepare the swellable slow-rebound polyether polyol. When the process is used for producing polyether, the reaction speed of epoxypropane in the early stage of reaction is higher, meanwhile, the situation that the production period is prolonged due to intermediate curing is avoided, and the production efficiency is improved. The polyether applying the process has better performance during foaming, has stronger adaptability to a formula, and avoids wettability reduction of foam and foam shrinkage during foaming caused by ethylene oxide end capping.

The application discloses a kind of for the synthesis of bio-based polyether polyol impact jet stirring reactor, it is related to reactor technical field, including reactor body, adjusting mechanism, charge air mechanism and stirring mechanism, the left end of the top of the reactor body is fixedly connected with the outer wall of adjusting mechanism, the left end of the reactor body is fixedly connected with charge air mechanism, the top center of the reactor body is fixedly connected with stirring mechanism, adjusting mechanism is by adjusting four groups of nozzle and shape change, change jet position and intersection, optimize flow field adaptation multiple raw materials;Guide mechanism adjusts the angle of guide vane and cooperates nozzle, double control flow field prevents uneven mixing;Charge air mechanism controls wave-shaped air bag by vacuum pump and piston rod, optimizes flow field to avoid scale formation;Stirring mechanism relies on part rotation and jet coordination, adaptation scale and promote gas-liquid mass transfer efficiency, finally improve synthesis efficiency, product uniformity and product quality.

The utility model discloses a dispersing agent feeding device for polymer polyol synthesis, including setting in the dispersing agent storage bin of the synthesis reation kettle body upper end, the dispersing agent storage bin lower extreme is provided with the conical feeding hopper, the conical feeding hopper lower extreme is provided with the jet flow plugging component, the dispersing agent storage bin top is hinged with the upper end cover, the utility model relates to polymer polyol synthesis technical field, and the dispersing agent for polymer polyol synthesis is added to the dispersing agent storage bin, buckles the upper end cover, and utilizes the locking positioner and locks the upper end cover with the dispersing agent storage bin, and while injecting the basic polyether into the reaction kettle, starts the electric push rod on the upper end cover, utilizes the electric push rod and pushes the support rod and the pressure plate downlink, thereby through the conical extrusion head and presses the dispersing agent in the dispersing agent storage bin downwards, under the action of pressure, the dispersing agent promotes the jet flow plugging component action, thereby along the dispersing agent and sprays into the reaction kettle in the inclined direction, and the dispersing agent distribution is more uniform.

The application relates to the technical field of data processing, in particular to a polycaprolactone polyol synthesis path optimization method based on a genetic algorithm, which comprises the following steps: constructing an adversarial framework with the genetic algorithm as a generator and a process stability discriminator; using a failure path deduction model to generate virtual failure data in a directional mode to solve a data sparsity problem and train the discriminator; quantifying the robustness risk of candidate process parameters through a virtual disturbance unit and taking the risk as a key part of a genetic algorithm fitness function; and simultaneously using the explainability analysis result of the discriminator to guide the mutation direction of the genetic algorithm. Through the above method, a process path with high performance and high robustness can be found, and the industrial practicability and decision efficiency of the optimization result are significantly improved.

The present invention belongs to the field of polyether polyol synthesis, and specifically relates to low-viscosity, high-molecular-weight polyether polyol and its preparation method. It is prepared by the following steps: using a small-molecule diol as an initiator, under the action of an alkali metal catalyst, using propylene oxide as a polymerization monomer, heating reaction, neutralization, dehydration, and filtration to obtain a low-molecular-weight polyether polyol; using a low-molecular-weight polyether polyol as an initiator, under the action of a double metal cyanide catalyst, using propylene oxide as a polymerization monomer, and preparing a medium-molecular-weight polyether polyol through induction and polymerization. Using a medium-molecular-weight polyether polyol as an initiator, under the action of a double metal cyanide catalyst, using propylene oxide as a polymerization monomer, and preparing a high-molecular-weight polyether polyol through pre-induction, induction, and polymerization; the high-molecular-weight polyether polymerization stage of the present invention adds a pre-induction process, which effectively improves the activation rate of the catalyst, and the prepared polyether polyol has a low unsaturation value and low viscosity.

The invention belongs to the field of composite materials, and relates to a method for preparing bio-based polyurethane by taking tannic acid as a raw material and modifying the surface of carbon fiber, which is characterized in that tannic acid is adopted to replace polyhydric alcohol which reacts with diisocyanate and is refined and derived from petroleum in the traditional thermoplastic polyurethane synthesis to synthesize a bio-based polyurethane polymer; the tannic acid is high in carbon content and can form an excellent carbon layer, and the formed carbon layer can play a role in isolating oxygen and heat in the combustion process, so that the bio-based polyurethane has high thermal stability and flame retardance, the mechanical property of the carbon fiber is effectively enhanced, the reaction process is mild and environment-friendly, and the method is suitable for industrial production. The method has a certain research value.

The invention relates to the technical field of polyhydric alcohol synthesis, and discloses a polyhydric alcohol synthesis multistage series continuous flow reactor which comprises a base, a reaction kettle is fixed on the upper side of the base, a discharging pump is fixedly arranged in the middle of the reaction kettle, a reaction pipe is fixedly arranged at the output end of the discharging pump, and the reaction pipe is connected with the discharging pump. A plurality of conveying pipes are symmetrically and fixedly arranged on the outer wall below the middle of the reaction kettle, a diffusion pipe and a mixing pipe which are located on the inner side and the outer side of the reaction kettle are fixed to the two ends of each conveying pipe respectively, a nozzle fixed to one end of a feeding pipe is arranged in each mixing pipe, and a circulating pump is fixedly arranged at the bottom of the reaction kettle. Through the circulating pump, the reaction kettle, the nozzle, the feeding pipe, the mixing pipe, the diffusion pipe and the stirring assembly, full mixing reaction of raw materials is realized, and through cooperation of the discharging pump and the reaction pipe, the raw materials are subjected to deep reaction in the flowing process, so that the functions of continuous feeding and discharging in the polyol synthesis process are realized, and the production efficiency is improved.

The invention relates to a polyether polyol production device which comprises a kettle body, a motor mounted above the kettle body and a stirring shaft connected with the motor, the stirring shaft extends into the kettle body, a stirring paddle is mounted at the bottom of the stirring shaft, a liquid raw material feeding pipeline is arranged at the top of one side of the kettle body, and a liquid raw material discharging pipeline is arranged at the top of the other side of the kettle body. A discharge port is formed in the bottom of the reaction kettle and is connected with a feed port of the circulating pump, a discharge port of the circulating pump is connected with a feed port in the top of the mixing reactor, a discharge port in the bottom of the mixing reactor is connected with the reaction kettle body, and the reaction kettle is provided with a gas phase pipe which is connected with a gas phase gas inlet of the mixing reactor. Meanwhile, a discharge hole of the mixing reactor feeding pipeline is lower than the horizontal height of an air inlet.

The present invention belongs to the technical field of polyurethane, and specifically relates to a polyurethane material for coal rock and a preparation method thereof. The polyurethane material for coal rock is composed of a white material and a black material in a mass ratio of 1:1. The white material includes the following raw materials: mining polyether polyol, flame retardant, and catalyst; the black material includes the following raw materials: prepolymer and flame retardant. The polyurethane material for coal rock of the present invention forms a highly cross-linked star structure by introducing hexahydroxytriphenylene with a star-shaped molecular structure into the synthesis of mining polyether polyol, which balances rigidity and flexibility while improving the cross-linking density and compressive strength of the product; secondly, bisphenol A with a benzene ring structure is used as a raw material for synthesizing the prepolymer, and the toughness and strength of the material are improved through the interaction of the benzene rings. The obtained polyurethane material has high compressive strength and low reaction heat, which meets the requirements of polyurethane material for coal rock; the present invention also provides a preparation method thereof, and the preparation process is simple.

The invention belongs to the technical field of polyether polyol synthesis, and particularly relates to high-adhesion reactive flame-retardant polyether polyol and a preparation method thereof. The preparation method comprises the following steps: respectively adding a solvent, a triphenyl alcohol compound, an aminophosphate compound and an acid catalyst into a reaction kettle, and continuously dehydrating for condensation reaction to generate a phosphate intermediate containing amido and a benzene ring; and cooling, adding an alkali metal catalyst into the intermediate, vacuumizing, stirring, heating, introducing alkylene oxide into the reaction kettle, and carrying out polymerization reaction to obtain the high-adhesion reactive flame-retardant polyether polyol. According to the invention, phosphorus element with flame retardant property and a large number of benzene ring structures are introduced into the molecular structure of polyether polyol, so that the strength and flame retardant property of a product are improved; a triphenyl silanol structure is introduced into a polyether polyol molecular structure, so that polyether has good surface tension reducing capacity, wettability can be improved, and a product and a base material have better adhesion.

This invention belongs to the field of polyether polyol synthesis technology, specifically relating to bio-based high-strength polyether ester polyols and their preparation methods. The bio-based high-strength polyether ester polyol is obtained from the following raw materials: small molecule polyol, catalyst, bio-based epoxide, and bio-based phenyl ester compound; the bio-based epoxide is one or more of limonene epoxide, α-pinene oxide, and caryophyllene oxide; the bio-based phenyl ester compound is one or two of benzyl benzoate and benzyl cinnamate. The raw materials used in this invention can be obtained through natural plant extraction, achieving full bio-based polyether ester polyol production, thus fundamentally reducing dependence on fossil resources. By introducing a large number of cyclic and benzene ring structures into the polyol molecule, the resulting product is applied in the field of rigid polyurethane foam, increasing the content of rigid groups in the molecular chain structure, and significantly improving the strength of rigid polyurethane foam compared to traditional polyether polyols.

The invention discloses a polyester polyol synthesis process and a polyester polyol synthesis system, and belongs to the technical field of polyester polyol synthesis. The synthesis process comprises the steps of raw material addition, reaction, rectification, alcohol separation, unloading and the like. The synthesis system comprises a reaction kettle, a rectifying tower and a tail gas absorption device. A heating jacket with a baffling mechanism is arranged outside the reaction kettle, and a stirring mechanism is arranged inside the reaction kettle, so that the heat utilization rate of a heating medium can be improved and the reaction is accelerated. The tail gas absorption device pressurizes tail gas through a tail gas pressurization box and then sends the tail gas into a tail gas absorption box, and the gas-liquid contact rate and the absorption rate are improved through multiple sets of stirring and gas distribution structures. The device is reasonable in design, can accurately control the reaction temperature, efficiently separate products and improve the utilization rate of a heating medium and the absorption rate of tail gas, and has relatively high social use value and application prospect.

The invention belongs to the technical field of polyether polyol synthesis, and particularly relates to bio-based high-strength polyether ester polyol and a preparation method thereof. The bio-based high-strength polyether ester polyol is prepared from the following raw materials: micromolecular polyol, a catalyst, a bio-based epoxide and a bio-based phenyl ester compound, the bio-based epoxide is one or more of limonene epoxide, alpha-pinene oxide and caryophyllene oxide; the bio-based phenyl ester compound is one or two of benzyl benzoate and benzyl cinnamate. The raw materials can be extracted from natural plants, full bio-based polyether ester polyol is realized, dependence on fossil resources is more thoroughly reduced from the source, a large number of cyclic and benzene ring structures are introduced into polyol molecules, and the obtained product is applied to the field of rigid polyurethane foam plastics and has a wide application prospect. The content of rigid groups in a molecular chain structure is increased, and compared with traditional polyether polyol, the strength of rigid polyurethane foam can be greatly improved.

The present invention relates to a process for the base-catalyzed preparation of a polyol comprising alkylene oxide units by an alkali metal, comprising the addition of a ligand for sequestering said alkali metal to a polyol comprising alkylene oxide units during the reaction time for a total period of time t > = 5 minutes, and to the use of said polyol.

The invention relates to the technical field of polyol synthesis, and particularly discloses epoxy plant oil-based polyol and a preparation method thereof.The hydroxyl value of the epoxy plant oil-based polyol is larger than or equal to 300 mgKOH / g, the functionality degree of the epoxy plant oil-based polyol is larger than or equal to 3.0, an aliphatic ester chain segment of the epoxy plant oil-based polyol contains an aromatic acid ester branched chain, and the structure of the aromatic acid ester branched chain is shown in the specification. R1 is H or an alkyl group with 1-5 carbon atoms, R2 is H or an alkyl group with 1-5 carbon atoms, and R3 is an alkylene group with 1-4 carbon atoms. The epoxy plant oil-based polyol prepared by the invention does not need refining treatment, can be directly used as a raw material of rigid polyurethane foam, has better compatibility, can effectively improve the heat insulation property of rigid foam, and has better comprehensive foam properties such as specific strength and the like.

The invention relates to antibacterial hybrid waterborne polyurethane as well as a preparation method and application thereof, aiming at different hardness degrees of two sides of a base material, two polyols with different glass transition temperatures are used for synthesizing a polyurethane prepolymer, and nano silicon dioxide or coupling agent modified nano silicon dioxide is introduced to increase the bonding force of the waterborne polyurethane, so that the antibacterial hybrid waterborne polyurethane is prepared. And particularly, the bonding effect at high temperature is improved. Besides, zirconium phosphate loaded with silver ions is added into a waterborne polyurethane system, so that the waterborne polyurethane system is endowed with antibacterial property, and nano silicon dioxide or coupling agent modified nano silicon dioxide and the zirconium phosphate loaded with the silver ions are synergistically used, so that a stable hydrogen bond network is formed; the zirconium phosphate loaded with the silver ions is stably dispersed in a waterborne polyurethane system, and the antibacterial property is provided.

The invention is applied to the technical field of high polymer materials, and discloses a preparation method of an ultrahigh-hardness polyurethane elastomer polishing material, and the preparation method comprises the following steps: S1, synthesizing a high-content prepolymer through a polyhydric alcohol with a special structure; and S2, preparing the ultrahigh-hardness polyurethane elastomer on the basis of the high-content prepolymer obtained in the step S1 by utilizing a one-step method and combining a dual-vacuumizing process. According to the preparation method of the ultrahigh-hardness polyurethane elastomer polishing material, the high-content prepolymer is synthesized by adopting the polyhydric alcohol with a specific structure, and the hardness of the ultrahigh-hardness polyurethane elastomer prepared on the basis is greatly improved, so that when the ultrahigh-hardness polyurethane elastomer polishing material is used for polishing hard materials such as superhard alloy and optical glass, the polishing efficiency and effect are remarkably improved, and the service life of the ultrahigh-hardness polyurethane elastomer polishing material is prolonged. Meanwhile, the inherent elasticity of the polyurethane elastomer is reserved, effective buffering can be achieved in the process of making contact with a workpiece, the surface of the workpiece is prevented from being scratched, and high quality and integrity of the polished surface are guaranteed.

The present invention relates to the technical field of hot melt adhesives, and discloses a polyurethane moisture-curing hot melt adhesive, a preparation method and an application thereof, wherein the polyurethane moisture-curing hot melt adhesive, the preparation method and the application thereof, comprises the following components in parts by weight: 10 to 45 parts of polyester polyol, 10 to 35 parts of polyether polyol, 20 to 40 parts of isocyanate compound, 4 to 6 parts of resin, 0.3 to 1 part of catalyst, 0.3 to 2 parts of defoamer, and 0.5 to 2 parts of wetting and leveling agent. The polyurethane moisture-curing hot melt adhesive, the preparation method and the application thereof, by using amorphous and highly crystalline polyester polyols and polyether polyols to synthesize the moisture-curing hot melt adhesive, not only has excellent wettability to substrates with low polarity, but also has a high initial adhesion strength. At the same time, by adjusting the amount of epoxy resin or thermoplastic resin used, it can cope with the lamination of substrates of different thicknesses, and the introduction of these resins can not only increase the initial adhesion but also improve the physical properties of the glue, effectively improving the performance of the hot melt adhesive.

The invention relates to the technical field of polymer chemistry and catalysts, in particular to a high-stability double-metal cyanide catalyst for polyether polyol synthesis as well as a preparation method and application of the high-stability double-metal cyanide catalyst. According to the high-stability double-metal cyanide catalyst for polyether polyol synthesis, a complex system of the catalyst contains a stable protective agent, and the stable protective agent is an organic compound which simultaneously contains a benzene ring group and at least one functional group selected from an ester group and / or an ether bond in a molecular structure of the stable protective agent. According to the method, the post-treatment procedure of a traditional KOH method and the pre-polymerization seed production procedure of a DMC method are thoroughly omitted, the production process is shortened, the energy consumption is reduced, no waste salt is generated, and the economic and environment-friendly benefits are remarkable.

The application provides a preparation method of a catalyst for high-activity bio-based polyol synthesis, comprising the following steps: 1) mixing a ligand polymer with an alcohol compound to obtain a catalyst ligand; 2) synchronously and slowly adding the catalyst ligand obtained in the step 1) and a potassium hexacyanocobaltate aqueous solution into a zinc salt aqueous solution to carry out a reaction, and obtaining a solid precipitate, which is a catalyst crude product; 3) washing the catalyst crude product with a weak acid aqueous solution, then washing with desalted water, filtering water, and then carrying out post-treatment to obtain the catalyst. The catalyst can be used for the synthesis of high-activity castor oil polyether polyol, the prepared castor oil polyether polyol has a content of primary hydroxyl groups higher than 80%, and has the advantages of no ester group chain breaking and narrow molecular weight distribution.

The invention discloses an impact type jet flow stirring reactor for bio-based polyether polyol synthesis, and relates to the technical field of reactors, the impact type jet flow stirring reactor comprises a reactor body, an adjusting mechanism, an air charging and exhausting mechanism and a stirring mechanism, the left end of the top of the reactor body is fixedly connected with the outer wall of the adjusting mechanism; the left end of the reactor body is fixedly connected with an air charging and exhausting mechanism, the center of the top of the reactor body is fixedly connected with a stirring mechanism, and an adjusting mechanism is adaptive to multiple raw materials by adjusting four groups of nozzles, changing shapes, changing jet flow positions and intersection points and optimizing a flow field; the flow guide mechanism adjusts the angle of a flow guide plate and is matched with a nozzle and a double-control flow field to prevent uneven mixing; the air inflation and exhaust mechanism controls a wavy air bag through a vacuum pump and a piston rod, a flow field is optimized, and scaling is avoided; the stirring mechanism adapts to the scale and improves the gas-liquid mass transfer efficiency by means of cooperation of component rotation and jet flow, and finally the synthesis efficiency, the product uniformity and the product quality are improved.