155 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 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.

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 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 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 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 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.

This application relates to the field of epoxy resins, and more particularly to a flexible, yellowing-resistant epoxy resin composition, its preparation method, and its application. The flexible, yellowing-resistant epoxy resin composition comprises one or more carbocyclic compounds represented by general formula (I) and one or more carbocyclic compounds represented by general formula (II); in general formulas (I) and (II): R1 and R2 are each independently selected from -H or C1-C. 20 The alkyl chain; R3 is independently selected from isocyanate compounds having two -NCO groups in the molecule; R4 is selected from polyhydroxy compounds containing -OH in the molecule. The flexible, yellowing-resistant epoxy resin composition of this application, in addition to having excellent molecular flexibility and solving the problems of warping, cracking, shrinkage, and defects caused by epoxy brittleness, can also maintain its original yellowing resistance.

The invention belongs to the technical field of fireproof heat-insulating materials, and provides waterborne polyurethane, a preparation method thereof and a fireproof heat-insulating coating. The polyhydroxy compound, the isocyanate compound, the hydrophilic chain extender, the cosolvent, the organic bismuth catalyst, the neutralizer and the water are adopted as main preparation raw materials of the waterborne polyurethane, and the waterborne polyurethane does not need to use acetone and is safer and more environmentally friendly. The fireproof heat-insulating coating can be further prepared by compounding the waterborne polyurethane resin with potassium hexatitanate whiskers, nano silicon dioxide, rutile nano TiO2, nanofiber tubes, hollow microspheres and silicate polymers, not only has excellent fireproof, heat-insulating, corrosion-resistant, protective, weather-resistant and adhesive force, but also is more environment-friendly and safer by using water as a medium, and is suitable for popularization and application. The method can be widely applied to the fields of preparation of new energy materials, batteries, automobiles, energy storage materials, aerospace, intelligent machines, anti-corrosion materials, electronic and electric appliance manufacturing and the like.

The present invention relates to: a first polyurethane resin dispersion composition that includes a polyurethane resin (A), an anionic surfactant (B), a polyhydroxy compound (C) that has at least one triple bond, and an aqueous medium (D); a thickening inhibitor for a second polyurethane resin dispersion composition that includes the polyurethane resin (A) and the aqueous medium (D), the thickening inhibitor using a combination of the anionic surfactant (B) and the polyhydroxy compound (C); and a method for improving the wetting properties of the second polyurethane resin dispersion composition that uses the abovementioned combination. The first polyurethane resin dispersion composition contributes to the achievement of Goal 7 and the like of the Sustainable Development Goals (SDGs).

The present disclosure relates to a method for preparing a polyamide polymer, a polyamide nanoparticle, a method for preparing a reverse osmosis membrane, and a reverse osmosis membrane prepared thereby. The method for preparing a polyamide polymer comprises polymerizing equimolar proportions of a polyamine monomer and a polyacyl chloride monomer. The polyamide nanoparticles are obtained by grinding a polyamide polymer obtained thereby. The method for preparing a reverse osmosis membrane comprises: curing a membrane casting solution on a supporting material to form a base membrane, wherein the membrane casting solution comprises a polymer, a polyhydroxy compound, and a solvent; and bringing the base membrane into contact with an aqueous phase solution and an oil phase solution in sequence, wherein the aqueous phase solution comprises polyamide nanoparticles and a polyamine monomer, and the oil phase solution comprises a polyacyl chloride monomer. The method for preparing a reverse osmosis membrane according to the present disclosure has a simple and easy technological process, facilitating commercial promotion and application. The prepared reverse osmosis membrane has both a high flux and a high desalination rate and solves the problems of poor compatibility of a nanoparticle intermediate layer with a base membrane and a functional layer and poor long-term stability.

The invention provides epoxy modified bio-based degradable saturated polyester synthesis and application thereof, and belongs to the technical field of polyester synthesis, and the synthesis method comprises the following steps: carrying out condensation polymerization on bio-based dicarboxylic acid, a polyhydroxy compound and aliphatic dihydric alcohol, and then carrying out modification treatment by using boron nitride doped epoxy resin to obtain the biodegradable saturated polyester. The polyhydroxy compound is one of pentaerythritol and trimethylolpropane or a mixture of the pentaerythritol and the trimethylolpropane. When the prepared epoxy modified bio-based degradable saturated polyester is applied to a substrate coating for 3D printing, the substrate coating and a 3D product can keep relatively high bonding strength at normal temperature, and meanwhile, the epoxy modified bio-based degradable saturated polyester is quickly softened and loses adhesive force at high temperature, so that high-strength bonding and efficient separation of the 3D product and a substrate are realized.

The invention discloses a foamed thermoplastic polyurethane insole and a preparation method thereof. The raw material composition of the foamed thermoplastic polyurethane shoe insole comprises thermoplastic polyurethane, the raw material composition of the thermoplastic polyurethane contains or does not contain a cross-linking agent, and when the raw material composition of the thermoplastic polyurethane does not contain the cross-linking agent, the raw material composition of the foamed thermoplastic polyurethane shoe insole further comprises the cross-linking agent; the cross-linking agent comprises one or more than two of polyisocyanate, a polyhydroxy compound and a polyamino compound; the polyisocyanate contains at least three isocyanate groups; the polyhydroxy compound contains at least three hydroxyl groups; the polyamino compound contains at least three amino groups. The preparation method can adopt a small blank foaming process. When the cross-linking agent is used for preparing the foamed thermoplastic polyurethane shoe midsole by a small blank foaming process, the shrinkage of a shoe wall during hot pressing can be prevented, and one or more than two properties of tensile strength, elongation at break and layered tearing strength of the foamed thermoplastic polyurethane shoe midsole can be improved.

The application relates to a method for preparing natural gas by taking biomass and polyhydroxy compounds as raw materials. The method comprises the following steps: mixing the raw materials with water and a catalyst, and carrying out a reduction reaction in a reducing atmosphere to obtain a product containing natural gas; the raw materials are selected from biomass raw materials or / and polyhydroxy compounds; the biomass raw materials are selected from at least one of beech sawdust, poplar sawdust, pine sawdust, birch sawdust, wheat straw or corn straw; the polyhydroxy compounds are selected from at least one of cellulose, hemicellulose, cellobiose, xylose, guaiacol, sorbitol, isosorbide, glycerol, erythritol, xylitol or glucose; the catalyst comprises a carrier and an active component loaded on the surface of the carrier; the active component is selected from metal elements; the metal elements are selected from at least one of the single elements of ruthenium, rhodium, platinum, palladium or iridium. The method provides a path for converting biomass such as sawdust and polyhydroxy compounds to prepare natural gas, and has important industrial application prospects.

The present invention belongs to the technical field of chemical products, and specifically relates to a sprayable aqueous personal lubricant and a preparation method thereof. The aqueous personal lubricant of the present invention comprises two components, namely component A and component B; component A includes acidic heteropolysaccharide, polyhydroxy compound, and sodium alginate; component B includes borax, sodium trimetaphosphate, calcium chloride, glyceride, soy lecithin, and an auxiliary emulsifier, etc.; the two components are respectively encapsulated in two independent cavities of a self-mixing sprayer; two suction pipes connected to a hand-pressed spray head are respectively arranged in the two independent cavities. When in use, the hand-pressed spray head is pressed, and the liquids in the two cavities are simultaneously ejected and mixed. After the two components are mixed and contacted, hydrogen bonds are formed between oxygen-containing functional groups and water within and between molecules in an aqueous solution, covalent cross-linking of borate ester is formed between boric acid and hydroxyl groups, and ionic cross-linking is formed between sodium alginate and calcium ions. The cross-linking bonds are rapidly formed within a short time, the viscosity of the mixed components instantaneously increases, and significant viscosity and lubricating efficacy are exhibited.

The present invention relates to the technical field of concrete materials. Disclosed are a modified epoxy resin and a preparation method therefor, a composition for an epoxy resin grouting material, an epoxy resin grouting material, a preparation method therefor, and a use thereof. The method for preparing the modified epoxy resin comprises: heating a polyhydroxy compound and an epoxy resin at 80-100ºC in a nitrogen atmosphere in the presence of a catalyst to obtain the modified epoxy resin, wherein the molar ratio of the polyhydroxy compound, the epoxy resin, and the catalyst is 1:1-2:0.05-0.1; the epoxy resin is a bisphenol A epoxy resin; the catalyst is selected from any one of sodium hydroxide, potassium carbonate, and dimethylaniline; and the polyhydroxy compound is selected from at least one of glycerol, ethylene glycol, propylene glycol, glucose, and butylene glycol. The epoxy resin grouting material of the present invention has more excellent toughness and lower viscosity, and good bonding strength and bonding durability with a concrete matrix.

The invention provides a bio-based haplotype dispersant as well as a preparation method and application thereof, and the method comprises the following steps: carrying out transesterification on a compound A as shown in a formula 1 and a polyhydroxy compound to generate a compound B as shown in a formula 2; and carrying out addition reaction on the compound B as shown in the formula 2 and allyl glycidyl ether to generate the bio-based haplotype dispersant as shown in a formula 3. The invention provides a dispersant with high activity, low viscosity, high dispersion efficiency and flexibly controllable reaction activity by taking renewable resources as raw materials.

The invention discloses water-based coating liquid with a gas barrier property, a polymer film and a preparation method of the polymer film. The water-based coating liquid is prepared from the following raw material components: a carboxylic acid compound or a carboxylic ester compound, a polyhydroxy polymer and water. The polymer film comprises a polymer base material and a gas barrier layer arranged on the surface of the polymer base material, and preparation raw materials of the gas barrier layer comprise water-based coating liquid. The polyhydroxy polymer can form a compact structure, so that permeation and diffusion of oxygen molecules are blocked. According to the present invention, the carboxyl group of the carboxylic acid compound and the hydroxyl group of the polyhydroxy compound can generate the esterification reaction, and the ester group of the carboxylic ester compound and the hydroxyl group of the polyhydroxy compound can generate the ester exchange reaction so as to form the cross-linked structure, such that the water resistance and the gas barrier property of the material can be easily enhanced; the polymer film prepared by the invention has excellent gas barrier property, and the oxygen permeability before and after cooking treatment is less than 1cm < 3 > / m < 2 > * day * 0.1 MPa.

This application belongs to the field of display technology and relates to a composition, ink, thin film, light-emitting device, and display apparatus. The composition comprises a polyhydroxy compound and a first metal oxide, wherein the polyhydroxy compounds are interconnected by hydrogen bonds, and the first metal oxide is coordinated with the polyhydroxy compounds. The polyhydroxy compounds can passivate surface defects of the first metal oxide, improving its conductivity, and, after coordination with the first metal oxide, can prevent uneven diffusion of the first metal oxide.

The invention discloses capacitor carbon, which is characterized in that the specific surface area of the capacitor carbon is 1400-2500 m < 2 > / g, and the tap density of the capacitor carbon is 0.35-0.51 g / cm < 3 >. The preparation method of the capacitor carbon comprises the following steps: (1) uniformly mixing a first carbon source, a polyhydroxy compound and a transition metal compound, and activating; (2) removing an activating agent from the activated material; and (3) carrying out heat treatment on the material obtained in the step (2), washing and drying to obtain the capacitor carbon. The invention provides high-tap-density capacitor carbon and a preparation method thereof. The super-capacitor carbon with high tap density and excellent cycle performance is obtained. The problem that in the prior art, a carbon electrode material for an energy storage device is not large enough in tap density is solved.

The present application relates to a starch-based composite material, a preparation method therefor and the use thereof, and a plastic product. Components of the starch-based composite material comprise: a polyester material, starch and a polyhydroxy compound, wherein on the basis of the total mass of the polyester material and the starch, the mass percentage of the polyester material is 15%-85%, and the mass percentage of the starch is 15%-85%; the mass of the polyhydroxy compound is 10%-50% of the mass of the starch; and the average particle size of the starch is less than or equal to 1μm.