206 results about "Polyhydroxy compound" patented technology

The invention relates to a preparation method of a nanofiltration membrane, the nanofiltration membrane prepared by the preparation method and application of the nanofiltration membrane. The method comprises: treating a base membrane having a polyamide layer thereon to convert acyl chloride groups in the polyamide layer into carboxyl groups, the base membrane comprising a reinforcing material layer and a polymer layer; activating the carboxyl group, wherein the activating treatment is carried out by using a solution containing a carboxyl group activating agent; contacting with a solution containing amino polyethylene glycol substances; contacting with a solution comprising a cross-linking agent; contacting with a solution comprising at least one of a polyhydroxy polymer and a polyhydroxy compound. The method is simple and easy to operate, reaction parameters are easy to regulate and control, and continuous industrial production can be achieved. The nanofiltration membrane prepared by the invention has stable and excellent comprehensive performance (permeability, separation performance, pollution resistance, scratch resistance and thick net bruise resistance). The nanofiltration membranes of the invention can be advantageously used for filtration, separation, and / or concentration.

The invention relates to the technical field of batteries, and particularly discloses a current collector, a method for preparing the current collector, a pole piece, a lithium ion battery and a power utilization device.The current collector comprises a base material and a conductive coating arranged on at least one side of the base material, and physical crosslinking points are evenly distributed in the conductive coating; the physical cross-linking points are non-covalent bond connecting points and comprise coordinate bonds between the binder and metal ions and / or hydrogen bonds between the binder and the polyhydroxy compound. The physical cross-linking points can effectively improve the adaptability of the conductive coating to the expansion and shrinkage stress of the active material layer in the long-term circulation process, the physical cross-linking points can be self-generated again after being damaged, the cross-linking structure improves the adhesion strength of the conductive coating to the current collector, meanwhile, the conductive coating has excellent fatigue resistance, and the service life of the conductive coating is prolonged. After long-term circulation, the high cohesiveness is still kept, and the phenomena of interface separation and active substance powder falling are not prone to occurring.

The invention provides a preparation method of a catalyst for preparing glycollic acid by oxidizing ethylene glycol, which comprises the following steps: impregnating a carrier in an impregnation liquid containing active metal salt, auxiliary metal salt and a polyhydroxy compound in equal volume, drying, roasting and reducing to obtain the catalyst for preparing glycollic acid by oxidizing ethylene glycol, wherein the active metal salt is selected from Pt salt and Pd salt, or Pt salt and Ru salt; the auxiliary metal salts are selected from any two of Sn, Ce, Ga, Bi, La, Mn and Rb salts; the carrier is a mixture of a mesoporous molecular sieve and an amorphous inorganic porous material. The catalyst prepared by the method can be used for preparing glycollic acid by high-activity and high-selectivity oxidation of ethylene glycol under mild, green and alkali-free conditions under the condition of low catalyst dosage.

The invention discloses a polyurethane adhesive and a preparation method and application thereof, the polyurethane adhesive comprises a component A and a component B, and does not contain a catalyst component; the component A is modified isocyanate of which the end group is isocyanate, and comprises one or more of a polyisocyanate copolymer, polyisocyanate biuret and polyol modified isocyanate; the component B is a polyhydroxy compound and comprises one or more of small molecular alcohol, polyether polyol, polyester polyol, polycaprolactone polyol, polyether ester polyol, polycarbonate polyol, bio-based polyol, epoxy resin, acrylate polyol and isocyanate chain-extended polyol; and at least one of the polyhydric alcohols in the component A and the component B is a treated polyhydric alcohol with a CPR value of 0.1-3. According to the polyurethane adhesive disclosed by the invention, the overall soft and hard segment structure of the adhesive is adjusted by controlling the CPR, so that the adhesive which does not need a catalyst and has good adhesive performance is obtained, and the adhesive has good curing performance.

The invention relates to a high-strength wear-resistant archaized brick and a preparation method thereof, and belongs to the technical field of archaized bricks, the high-strength wear-resistant archaized brick comprises the following raw materials: 25-30 parts of fly ash, 30-35 parts of superfine slag powder, 30-35 parts of clay, 8-10 parts of coke powder, 10-12 parts of diatomite, 12-15 parts of potassium feldspar, 10-15 parts of a modified binder and 8-12 parts of a reinforcing agent; according to the technical scheme, a polyhydroxy compound is combined with a silanization reinforcing filler, then combined with an anhydride compound and then combined with novolac epoxy resin, then an amine curing agent is added, and curing is conducted to obtain the modified binder; fly ash, superfine slag powder, clay and coke powder are subjected to ball milling, diatomite, potassium feldspar, a modified binder and a reinforcing agent are added, and the high-strength wear-resistant archaized brick is obtained through stirring, calcining and compression molding. The mechanical property, thermal stability and wear resistance of the archaized brick are improved on the whole, the densification degree of the archaized brick is enhanced, and the comprehensive performance is good.

The invention provides a cross-linking and curing environment-friendly polyurethane waterproof coating and a preparation method thereof, and the cross-linking and curing environment-friendly polyurethane waterproof coating comprises the following raw materials by weight: 15-30 parts of a polyhydroxy compound; 6 to 15 parts of pentaerythritol polyether; 1-5 parts of an anionic surfactant; 1 to 5 parts of nano silicon dioxide aerogel; 1-8 parts of wollastonite powder; 25 to 45 parts of fly ash floating beads; 10 to 25 parts of diisocyanate; 0.5 to 3 parts of chlorinated paraffin; and 0.5 to 3 parts of N, N-dimethyl-2-hydroxyethylamine. The cross-linking curing environment-friendly polyurethane waterproof coating provided by the invention solves the environment-friendly problem of the traditional polyurethane waterproof coating, realizes solvent-free curing, meets the environment-friendly requirement, improves the comprehensive properties such as elasticity and durability of a coating film, and provides a safer and more effective solution for waterproof construction.

Multi-component compositions for the preparation of extrudable mortars, which include a mortar base component including Portland cement, an additive for hydration control, a polyhydroxy compound and water and an accelerator component, which includes an alkali metal aluminate. The multi-component compositions enable a simple processing in conventional 3D mortal extrusion printing devices, where the viscosity can be adjusted independent from the accelerator. Also included are cementitious compositions prepared from such multi-component compositions, a 3D printing process using such mixed compositions as a printing material, as well as 3D structures which have been prepared via a corresponding printing process.

The invention relates to the technical field of green hydrogen production, in particular to a green hydrogen production system coupling biomass electrooxidation and water reduction, which comprises a pretreatment unit, a photovoltaic power generation unit and an electrolytic bath, the pretreatment unit is used for dissolving a polyhydroxy compound in an alkaline aqueous solution to form an alkaline electrolyte containing the polyhydroxy compound; the photovoltaic power generation unit is used for providing electric energy for the electrolysis process in the electrolytic cell, the electrolytic cell comprises a shell, an ion exchange membrane, an anode plate and a cathode plate, the ion exchange membrane divides the shell into an anode chamber and a cathode chamber, the anode plate is electrically connected with the positive electrode of the photovoltaic power generation unit, and the cathode plate is electrically connected with the negative electrode of the photovoltaic power generation unit. The shell is provided with a seawater inlet and a hydrogen outlet which are communicated with the cathode chamber, and the shell is provided with a compound inlet and a chemical outlet which are communicated with the anode chamber. According to the scheme, chemicals are obtained from the anodes, the safety is high, the cell voltage needed for driving the whole electrolysis process is greatly reduced, and the energy consumption of the whole electrolysis hydrogen production process is small.

The invention discloses a sustained-release nicotine buccal product and a preparation method thereof, the sustained-release nicotine buccal product comprises the following preparation raw materials: a microcapsule, a sustained-release auxiliary agent and a functional auxiliary agent, nicotine / salt and essence are embedded in the microcapsule, and the sustained-release auxiliary agent is a water-soluble polyhydroxy compound. The water-soluble polyhydroxy compound is used as the slow-release auxiliary agent, so that the loss rate of nicotine in the microcapsule can be greatly reduced, the release of nicotine in the use process is more lasting and uniform, meanwhile, the humidity of the product can be improved, the smoke is softer, the discomfort of the throat is reduced, and the smoking experience of a user is improved; besides, the humidity is improved, so that the release of nicotine can be promoted, the nicotine can be absorbed more easily, the stability of the nicotine can be improved, and the storage time of the product is prolonged.

The invention provides a high-strength and high-thermal-plastic-temperature polysiloxane polyurea thermoplastic elastomer containing dynamic acetal amine bonds and a preparation method of the high-strength and high-thermal-plastic-temperature polysiloxane polyurea thermoplastic elastomer. According to the invention, the diisocyanate and macromolecular polydimethylsiloxane copolymer is used as a soft segment, the diisocyanate and 1, 3-bis (3-aminopropyl) tetramethyldisiloxane copolymer is used as a hard segment, and the polyhydroxy compound containing dynamic acetal amine bonds is used as a cross-linking agent, so that the prepared elastomer has good mechanical properties and high thermal plasticizing temperature, and can be used for preparing the polyurethane elastomer. Repeated processing can be realized; the preparation process is simple and feasible, and the product has stable performance and good reproducibility and is suitable for popularization and application.

The invention belongs to the technical field of biology, and particularly discloses an exosome preserving fluid, which is prepared from the following ingredients in parts by weight: 0.01 to 0.1 part of sodium hyaluronate, 0.1 to 1 part of threonine, 0.5 to 1.2 parts of chitosan, 1 to 4 parts of bovine serum albumin, 1.5 to 3.5 parts of phospholipid substances, 3 to 9 parts of polyhydroxy compounds, 2 to 10 parts of ellagic acid, 2 to 10 parts of tomato extracts, 5 to 15 parts of dimethyl sulfoxide and 64.1 to 66.99 parts of normal saline. The exosome preserving fluid provided by the invention can provide stable conditions for storing the exosome, so as to protect the structure of the exosome and biological information molecules or drugs carried by the exosome from biological, chemical or mechanical damage, effectively maintain the stability, activity and function of the exosome, and ensure that the exosome is not lost in the preservation process.

The invention relates to a two-component polyurethane adhesive composition as well as a preparation method and application thereof, and the two-component polyurethane adhesive composition comprises a component A and a component B, the component A is prepared from the following raw materials in percentage by mass: 60 to 90 percent of castor oil, 4 to 10 percent of multifunctional hydrogen-containing compound, 5 to 20 percent of liquid polybutadiene glycol, 0.4 to 5 percent of hydrogenated castor oil, 0.5 to 5 percent of polyamide wax micro powder, 0.01 to 1 percent of defoaming agent and 0.5 to 12 percent of filler on the basis that the total mass of the component A is 100 percent; and the component B is a polyurethane prepolymer prepared by reacting a polyisocyanate group compound with a polyhydroxy compound. The two-component polyurethane adhesive provided by the invention has good infiltration and permeability to a membrane material, has the characteristics of excellent hydrolysis resistance, acid and alkali resistance and high bonding strength, and can be used as an adhesive of a winding type reverse osmosis membrane assembly and a sealant of an ultrafiltration membrane assembly.

The invention discloses an oil-soluble composition containing recombinant collagen. The composition comprises recombinant collagen, a polyhydroxy compound, grease, an emulsifier and water. The invention also provides a preparation method of the composition. The composition disclosed by the invention has the characteristics of good transparency, high drug loading capacity, good adaptability and good stability.

The invention provides a polyurethane-polyamide copolymerized elastomer composition as well as a preparation method and application thereof, and the polyurethane-polyamide copolymerized elastomer composition is prepared from the following raw material components in percentage by mass: A) 5-50 wt% of diisocyanate, B) 30-80 wt% of a polyhydroxy compound containing reactive hydrogen, C) 5-25 wt% of a chain extender, and D) 1-30 wt% of a cyclic lactam prepolymer. The polyurethane prepolymer, the cyclic lactam prepolymer and the chain extender are mixed and granulated, so that the compatibility problem of TPU and PEBA can be solved, and the performance of the polyurethane-polyamide copolymerized elastomer is improved.

This invention relates to a two-component polyurethane based thermal conductive adhesive composition and cured product thereof. The adhesive composition comprises a component (A) comprising a polyhydroxy compound and a crosslinker, and a component (B) comprising an isocyanate-containing compound and a (poly)isocyanate prepolymer having an active isocyanate group which is prepared by reacting a hydroxyl-terminated polybutadiene with excess amount of an aromatic isocyanate. The adhesive composition provides a favourably combination of good adhesion property and good thermal conductivity.

The invention discloses nanoparticles with surfaces grafted with polymer molecular brushes as well as a preparation method and application of the nanoparticles. The preparation method comprises the following three steps: (1) modifying polyhydroxy compounds on the surfaces of the nanoparticles through coordination complexation or adsorption; (2) reacting the nano particle surface modified polyhydroxy compound with a halogenated compound to generate a halogenated compound active site which can be used for atom transfer radical polymerization (ATRP) reaction; and (3) carrying out ATRP (Atom Transfer Radical Polymerization) reaction on the tail end of the active site of the halogenated compound and the monomer for forming the molecular brush to obtain the nano particle with the surface grafted with the polymer molecular brush. The nanoparticles with the surfaces grafted with the polymer molecular brushes, prepared on the basis of the method, have good dispersity and unique optical performance in different solvents due to different types of molecular brushes, and the application potential of the nanoparticles in the aspects of optical devices, optical elements, drug carriers, nano medicine, biological sensing and biological probes is expanded.

The invention relates to a preparation method of a high-flux nanofiltration membrane, in particular to a method for preparing a high-flux nanofiltration membrane by taking aminated ferroferric oxide nanospheres as a nano support for interfacial polymerization reaction and adding a polyhydroxy compound containing an organic carbon chain into a water-phase solution to adjust the diffusion behavior of a water-phase monomer in the interfacial polymerization reaction. The aminated ferroferric oxide nanospheres participate in an interfacial polymerization reaction to increase the integrity and compaction resistance of a polyamide structure, and provide an additional water channel, so that the nanofiltration membrane with a thin and compact polyamide functional layer is obtained, and the prepared nanofiltration membrane has high rejection rate and high water flux. The membrane preparation process is simple and convenient, industrial production is easy to realize, and the application prospect is wide.

The invention relates to the technical field of concrete materials, and discloses modified epoxy resin and a preparation method thereof, a composition for an epoxy resin grouting material, the epoxy resin grouting material and a preparation method and application of the epoxy resin grouting material. The method for preparing the modified epoxy resin comprises the following steps: heating a polyhydroxy compound and epoxy resin at 80-100 DEG C in a nitrogen atmosphere in the presence of a catalyst to obtain the modified epoxy resin, the molar ratio of the polyhydroxy compound to the epoxy resin to the catalyst is 1: (1-2): (0.05-0.1); the epoxy resin is bisphenol A epoxy resin; the catalyst is selected from any one of sodium hydroxide, potassium carbonate and dimethylaniline; the multi-hydroxyl compound is selected from at least one of glycerol, ethylene glycol, propylene glycol, glucose and butanediol. The epoxy resin grouting material provided by the invention has more excellent toughness and lower viscosity, and has good bonding strength and bonding durability with a concrete matrix.

The invention discloses a preparation method and application of a hyperbranched multi-arm star-shaped epoxy resin emulsifier, and relates to the field of waterborne epoxy emulsions. The preparation method of the hyperbranched multi-arm star-shaped epoxy resin emulsifier comprises the following steps: synthesizing a hyperbranched polyether hydrophobic core containing rich epoxy end groups from a polyhydroxy compound and a polyfunctional epoxy compound, and grafting methoxypolyethylene glycol to the hydrophobic core through hydroxyl epoxy-opening reaction. Compared with a traditional linear emulsifier, the hyperbranched emulsifier has the advantages that abundant active end groups can introduce a large number of hydrophilic chain segments to obtain better emulsifying capacity, sufficient reaction sites can be reserved to participate in curing of a system, and negative effects on a coating due to dissociation of the emulsifier are reduced.

The invention provides high-degradation epoxy resin and a preparation method of an insulating material, and relates to the technical field of epoxy resin, the molecular structural formula of the high-degradation epoxy resin is # imgabs0 #, R1 is Cn1H2n1, n1 is equal to 1-6, R2 is Cn2H2n2, n2 is equal to 1-6, R3 is Cn3H2n3 + 1 or Cn3H2n3OC3H5O, n3 is equal to 0-6, R4 is Cn4H2n4 + 1 or Cn4H2n4OC3H5O, and n4 is equal to 0-6; secondly, the invention also provides a preparation method of the high-degradation epoxy resin, and the method comprises the following steps: preparing 1, 2, 4, 5-tetrahydroxyphenol, aliphatic ketone and p-toluenesulfonic acid according to a molar ratio, and preparing a polyhydroxy compound with condensed ring ketal as a molecular skeleton; then a polyhydroxy compound, epichlorohydrin and a catalyst which are prepared according to the molar ratio are subjected to a ring-opening reaction, a ring-closing reaction and the like, and faint yellow condensed ring ketal epoxy resin is obtained; the high-degradation epoxy resin disclosed by the invention has the characteristics of mild degradation conditions and high degradation speed.

The invention discloses a medical pressure-sensitive adhesive patch based on citric acid, a preparation method and application, the medical pressure-sensitive adhesive patch is composed of an adhesion layer and an anti-adhesion layer, and the thickness ratio of the adhesion layer to the anti-adhesion layer is 1: 1-100: 1; the adhesion layer is obtained by polymerizing a citric acid unit and a polyhydroxy compound unit; the hydrophobic high-molecular polymer is selected from at least one of a polylactic acid-glycolic acid copolymer, polylactic acid, polyurethane and polyether urethane. According to the preparation method, three carboxyl groups in the citric acid not only can be used for esterification reaction with polyhydric alcohols to form a network, but also can provide excellent adhesive force for contact between the adhesive patch and the tissue surface through electrostatic interaction or hydrogen-bond interaction. The anti-sticking layer prepared from the hydrophobic high-molecular polymer can effectively resist invasion of external moisture and bacteria, so that the service time of the adhesive patch is prolonged; meanwhile, the anti-sticking layer can also play a supporting role, so that the mechanical strength of the adhesive tape is improved.

The present disclosure discloses a solid amine material absorbing CO2, preparation method, and application thereof, including a porous carrier and water-resistant organic amine loaded on the porous carrier. The water-resistant organic amine includes a biomass-derived polyhydroxyl compound, hydrophilic organic amine and hydrophobic organic amine combined with the biomass-derived polyhydroxyl compound at the same time. The biomass-derived polyhydroxyl compound comprises a six-membered ring structure, with good water resistance and CO2 adsorption effect.

The invention discloses spherical activated carbon prepared from waste resin and a preparation method of the spherical activated carbon. Comprising the following steps: mixing waste ion exchange resin with an aqueous solution containing a polyhydroxy compound and soluble salt, drying, carbonizing, pickling, and washing to obtain the spherical activated carbon. The preparation process is simple, and the waste resin solid waste is converted into the high-value spherical activated carbon through one-step modification.

The invention provides modified starch hydrogel as well as a preparation method and application thereof, and belongs to the technical field of starch gel. The invention provides modified starch hydrogel. The modified starch hydrogel comprises natural starch, water and a polyhydroxy compound, the water, the polyhydroxy compound and the natural starch are mutually crosslinked to form a honeycomb network structure. The modified starch hydrogel provided by the invention has a honeycomb network structure, and compared with pure starch hydrogel, the modified starch hydrogel provided by the invention is more compact in gel network structure, smaller in pore diameter and thicker in pore wall thickness, so that the modified starch hydrogel has excellent mechanical properties. In addition, the modified starch hydrogel provided by the invention does not use chemical reagents, does not cause harm to human bodies and does not cause environmental pollution.

The invention discloses an externally-coated composite hydrogel microsphere as well as a preparation method and application thereof. The externally-coated composite hydrogel microsphere comprises a hydrogel microsphere core and a degradable shell, the inner core of the hydrogel microsphere is a mixture and / or a reaction product of components including an anion biological material, a cation biological material, water, a polyhydroxy compound I and multivalent metal salt, and the degradable shell comprises components including a degradable polymer, a plasticizer and a polyhydroxy compound II. The externally-coated composite hydrogel microspheres have a good synergistic effect, the effect of controllable slow release of the fertilizer can be achieved through formula and process blending, the problem that an existing anion biomaterial fertilizer slow-release coating material is prone to burst release is solved, the mechanical performance is good, and the slow-release coating material is suitable for large-scale production. The problem that the slow-release effect is lost due to the fact that anion biological material fertilizer slow-release hydrogel microspheres are prone to being damaged in the processes of storage, transportation, application and the like due to poor mechanical performance is solved.

The invention relates to the technical field of sensing of magnetic nano photoelectric materials, in particular to a responsive microsphere based on a three-dimensional magnetic photonic crystal and a preparation method and application thereof, and the responsive microsphere is formed by arranging polyhydroxy compound modified magnetic nanoparticles in a spherical polymer into a non-close packing face-centered cubic or body-centered cubic structure. The responsive microsphere based on the three-dimensional magnetic photonic crystal is easy in color distinguishing, has no angle dependence, does not need to depend on a fluorescent dye or a radioactive label, can realize real-time and in-situ monitoring through own optical characteristics, breaks through the bottlenecks of sensitivity and resolution of a traditional sensor, realizes visual detection, simplifies the detection process, and is suitable for mass production. The cost is reduced. According to the responsive microsphere based on the three-dimensional magnetic photonic crystal, the substance diffusion path is shortened through the small size of the responsive microsphere, and the response speed is remarkably increased in combination with the high specific surface area.

The invention belongs to the technical field of high polymer materials, and particularly relates to a composition, a mixed plastic dynamic crosslinking material and a preparation method and application thereof. The composition comprises the following components in parts by mass: 100 parts of a heterochain polymer; 5 parts by mass to 2000 parts by mass of polyolefin; 1 part by mass to 200 parts by mass of a polyhydroxy compound; 1 to 200 parts by mass of a grafting agent; and 0.25 to 40 parts by mass of a radical initiator. The mixed plastic dynamic cross-linking material prepared by utilizing the composition through a chain scission-grafting-dynamic cross-linking multi-step synergistic strategy has excellent thermal, mechanical and reprocessing properties.

The invention provides a carrier material as well as a preparation method and application thereof, the preparation method of the carrier material comprises the following steps: 1) mixing a mixed solution containing a polyhydroxy compound and / or a polyamine compound, polycarboxylic acid and a metal source with a porous material to obtain a mixed system; wherein the mass of the mixed solution is 40-60% of the mass of the porous material; and 2) carrying out post-treatment including polymerization treatment, drying treatment and roasting treatment on the mixed system to obtain the carrier material. According to the preparation method of the carrier material provided by the invention, metal ions enter the pore channels of the porous material, the metal material can be uniformly distributed on the inner surfaces of the pore channels under the pore channel confinement effect, and the carrier material is applied to a catalyst, so that the temperature of a catalytic oxidation reaction of a volatile organic compound can be reduced.

The application discloses a kind of sulphur-containing polydopamine melanin nanoparticles and preparation method and application, preparation raw materials include polyhydroxy compound and sulphur-containing compound, the weight ratio of the polyhydroxy compound and the sulphur-containing compound is (1-100) :(1-100), the preparation raw materials also include water, organic solvent and acid-base regulator.The application occurs self-polymerization reaction under alkaline condition with dopamine and sulphur-containing compound, without additional crosslinking agent and oxidant, and the nanoparticles obtained have excellent photothermal performance.In photothermal therapy, biomedical imaging, water purification, functional coating and other aspects, it shows great application potential.And preparation reaction condition is mild, without additional catalyst and oxidant, process is safe, post-processing is simple, and no harmful waste water and waste residue to environment, meet the requirements of green chemistry.

The invention belongs to the technical field of silica gel, and particularly relates to silica gel capable of rapidly absorbing water as well as a preparation method and application thereof. The silica gel capable of rapidly absorbing water is prepared by carrying out a thiol-ene click reaction on silochrom loaded with a polyhydroxy compound and silochrom loaded with polydopamine. The silica gel provided by the invention has relatively high water absorption rate while rapidly absorbing water, and also has good regeneration performance.