167 results about "Hydroxy compound" patented technology

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 relates to an automobile scratch-resistant protective film and a preparation method thereof, and belongs to the technical field of automobile protective materials. The material is prepared from modified nano aluminum oxide, modified polyurethane acrylate, polyurethane acrylate, a photoinitiator, a flatting agent, an antioxidant and a solvent, the modified nano aluminum oxide is prepared through an esterification reaction of nano alpha-Al2O3 and stearic acid, and the hardness and wear resistance of a coating are enhanced; and the modified polyurethane acrylate is prepared by reacting a polyurethane prepolymer with a hydroxyl compound, so that the interface bonding force with the nano particles and the flexibility of the coating are improved. The preparation method comprises the following steps: dispersing modified nano aluminum oxide into a solvent, sequentially adding other components, and uniformly mixing to obtain functional coating slurry; the surface of a PET base material is coated with the slurry, and ultraviolet curing molding is performed after pre-drying. The prepared protective material has the characteristics of high hardness, scratch resistance, strong adhesive force with automobile paint and excellent weather resistance, and is suitable for automobile surface protection.

The invention relates to the technical field of batteries, in particular to a binder for a silicon negative electrode and a preparation method of the binder. The embodiment of the invention provides a preparation method of a binder for a silicon negative electrode, which comprises the following steps: preparing a premixed solution A: adding a boron-containing compound into an aqueous solution of a hydroxyl-containing compound, and stirring and mixing to form the premixed solution A; preparing a premixed solution B: dissolving a hard monomer and a soft monomer in water to form the premixed solution B; the premixed solution A and the premixed solution B are mixed to form a mixed solution C, an initiator is added to enable the mixed solution C to be subjected to a copolymerization reaction, and the binder is prepared through the copolymerization reaction of the mixed solution C. The binder prepared by the method has excellent elasticity, toughness, rigidity and mechanical properties.

The invention provides a composite surfactant for oil displacement of a hypersalinity oil reservoir and a preparation method of the composite surfactant, and relates to the technical field of petrochemical engineering. The composite surfactant is prepared from the following components in percentage by weight: 0.1 to 0.3 percent of anionic-nonionic surfactant, 0.01 to 0.03 percent of cationic surfactant and the balance of formation water, wherein the anionic-nonionic surfactant is prepared by the following steps: reacting a hydroxyl-containing compound with ethylene oxide to obtain polyoxyethylene ether, then carrying out esterification modification by using aconitic acid modified rosin, then sulfonating by using a sulfonating agent, and finally neutralizing. The composite surfactant shows relatively low interfacial tension under the condition of hypersalinity (50000-200000 mg / L), is high in stability, and can be used for improving the recovery efficiency of hypersalinity oil reservoirs.

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 the technical field of semiconductor cleaning agents, and particularly discloses an etching solution for SiC surface silicon and a preparation method of the etching solution. The etching solution for SiC surface silicon comprises an aqueous solution of a component A and an aqueous solution of a component B. The component A comprises the following raw materials in parts by weight: 3-8 parts of nitric acid, 1-2 parts of hydrofluoric acid, 0.5-1 part of a complexing agent and 0.1-1 part of a surfactant; the raw materials of the component B comprise modified citric acid and citric acid in a mass ratio of (2.2-5.7): (1-1.8), and the modified citric acid is obtained by modifying a dihydroxy compound. The etching solution for the SiC surface silicon has higher selectivity on the SiC substrate surface silicon and other impurities, the etching effect and the etching rate of the etching solution on the SiC surface silicon are effectively improved, the loss of the SiC substrate is reduced, and the problem of environmental pollution is also reduced.

The invention discloses foamed 3D printing elastomer photosensitive resin and a preparation method, and relates to the technical field of additive manufacturing materials. The thermal-expansion polyurethane acrylate composite material is prepared from the following materials in parts: 400 to 700 parts of a polyurethane acrylate oligomer containing dynamic oxime ester bonds and acrylate groups, 200 to 500 parts of a reactive diluent, 50 to 200 parts of thermal-expansion microspheres, 10 to 50 parts of a photoinitiator and 1 to 50 parts of a stability auxiliary agent, the polyurethane acrylate oligomer containing the dynamic oxime ester bond and the acrylate group is prepared by reacting isocyanate, polyol, a compound containing oxime hydroxyl and an acrylate end-capping reagent. According to the 3D printing elastomer photosensitive resin and the preparation method thereof, by introducing dynamic oxime ester bonds, controllable foaming of the material in the heat treatment process is achieved, the technical bottleneck that traditional light-cured resin is large in foaming difficulty is broken through, the material is endowed with the excellent lightweight characteristic through design, good mechanical performance and heat stability are kept, and the 3D printing elastomer photosensitive resin is suitable for 3D printing. The high requirement on the material performance is met.

The invention discloses a method for repairing cracks of cultural relics, a repairing coating and a method, and relates to the technical field of cultural relic repairing. The preparation method of the repair coating comprises the following steps: step 1, mixing isocyanate and a hydroxyl compound in an inert gas atmosphere, and reacting the isocyanate and the hydroxyl compound under a first reaction condition to generate a first intermediate product; step 2, adding a sulfhydryl compound into the first intermediate product to obtain a mixture, dropwise adding an oxidizing agent into the mixture under a second reaction condition, and reacting the mixture in the dropwise adding process to generate a second intermediate product; and 3, carrying out emulsification treatment and pH value adjustment on the second intermediate product to obtain a waterborne polyurethane dispersion liquid, and sequentially carrying out filtration and solid content adjustment on the waterborne polyurethane dispersion liquid to obtain the repair coating. The repairing coating disclosed by the invention has efficient self-repairing capability, and the repairing coating contains disulfide bonds, so that the repairing coating realizes fracture and recombination under mild conditions.

A polishing liquid for CMP, the polishing liquid containing abrasive grains, a nitrogen-containing compound, and water, in which the abrasive grains include cerium-based particles, and the nitrogen-containing compound includes a compound A1 having a fused ring (a fused ring having an aromatic five-membered ring with one nitrogen atom), a compound A2 having a quinoline ring and one hydroxy group bonded to the quinoline ring, a compound A3 having an aromatic ring and a hydroxy group bonded to a nitrogen atom, or a compound A4 having a nitrogen-containing aromatic ring to which at least one selected from the group consisting of a hydroxy group and an amino group is bonded.

A process for the production of a C6-18 alkyl ester of 4-aminobenzoic acid of formula (I), wherein the process comprises the step of reacting the 4-aminobenzoic acid of formula (II) with an hydroxy compound of formula (III) in the presence of a catalyst to generate a C6-18 alkyl ester of 4-aminobenzoic acid of formula (I) wherein R is a C6-18 alkyl group; and wherein the catalyst is a titanium catalyst, preferably a titanium alkoxide catalyst.

Polymeric materials which inter alia may be used as binder materials for energetic materials and to improved energetic materials containing such a binder and a process for the manufacture of these novel polymeric materials wherein the polymeric material comprising a hydroxyl group containing compound reacted with a cross-linking agent having at least two reactive groups per molecule at least one of which is reacted with one or more hydroxyl groups of the hydroxyl containing compound and at least another of the reactive groups is reacted with a hydroxyl group of a hydroxyl containing rosin ester resin.

The invention provides a six-membered sultam derivative as well as an electrochemical synthesis method and application thereof, and a 2-isoallylbenzenesulfonamide derivative and a hydroxyl-containing compound are electrified and reacted in an electrolyte to obtain the six-membered sultam derivative. The electrolyte comprises 2, 2, 6, 6-tetramethylpiperidine and an electrolyte tetrabutylammonium tetrafluoroborate; compared with the prior art, the sultam derivative can be obtained through reaction under the electrochemical condition, no oxidizing agent or reducing agent is needed in the reaction, no metal catalyst or high temperature is needed, synthesis steps are simple, side reactions are few, the yield of the target product is high, and the method can be used for industrial production.

The application relates to the technical field of polyols, and particularly discloses a high-functionality plant phenol-based polyether polyol, a preparation method thereof and a polyurethane adhesive. The high-functionality plant phenol-based polyether polyol is prepared from plant phenol glycidyl ether and a dihydroxyl compound with a molar ratio of 1:(1.8-2.2). The preparation method comprises the following steps: obtaining a polyol intermediate by reacting the plant phenol glycidyl ether and the dihydroxyl compound under the action of a first catalyst, and then obtaining the product by reacting the polyol intermediate under the action of a second catalyst. The high-functionality plant phenol-based polyether polyol has multiple high-reactivity hydroxyl groups, significantly improves the hydroxyl content and the reactivity of a plant phenol-based high-molecular material, and widens the application range.

The present invention provides a method (600a) and apparatus for producing an alkaline mixture comprising sodium silicate, which mixture is suitable for use as an alkaline activator for alkaline activated and geopolymer cements, but which may also be used, for example, to mineralize captured carbon dioxide. The method comprises comminuting (301) an ore of a target metal into fines, wherein the ore comprises a siliceous mineral and at least one of iron and manganese as the target metal. The siliceous mineral may comprise the target metal itself and / or it may be silica and / or another silicate mineral present as gangue. The ore is dehydrated and hydroxylated compounds contained therein are dehydroxylated (302). The ore thus treated is then reacted (601) in an inert atmosphere with an amount of liquid sodium in excess of the stoichiometric amount thereof required for a redox reaction between the liquid sodium and an oxide of the target metal from the ore, to precipitate out from the liquid sodium a solid phase comprising both the target metal in elemental form and other insoluble products comprising sodium oxide. The redox reaction is conducted at a temperature of at least 320 °Celsius to induce a reaction between the sodium oxide and silica derived from the siliceous mineral to produce sodium silicate, but also below a temperature at which the liquid sodium can react with the oxide of the target metal to produce a ternary oxide thereof. At least some of the liquid sodium having sodium silicate dissolved therein is then separated (305) from the solid phase and is reacted (602) with at least one of oxygen and water to produce a mixture comprising sodium silicate and at least one of sodium oxide and sodium hydroxide. The corresponding apparatus comprises a comminution device (such as a rock crusher or grinder), means for dehydrating and dehydroxylating the ore (such as a dryer), a gas-tight first reaction vessel for reacting the ore thus treated with the liquid sodium, a solid-liquid sodium phase separator, and a second reaction vessel for reacting the liquid sodium having sodium silicate dissolved therein with at least one of oxygen and water. The resulting alkaline mixture is therefore produced whilst extracting the target metal in elemental form from its ore. Thus the energy consumed is split between the production of these two co-products, making the method of the invention a low-energy method of producing an alkaline activator for alkaline activated and geopolymer cements. Both reactions (601, 602) are also significantly exothermic and at least some of the thermal energy from them may be recycled. The invention does not consume any carbon and is therefore at least carbon-neutral. On the other hand, it consumes the silica content of gangue mineral species and / or of siliceous minerals of the target metal in its ore, which have previously been treated as waste products. The amount of waste material produced when extracting the target metal from its ore is thereby reduced as well.

The invention discloses a cross-linked polyurethane material plasticizing transformation method, a prepared regenerated polyurethane material and application, and belongs to the technical field of high polymer materials. The cross-linked polyurethane material plasticizing transformation method provided by the invention comprises the following steps: by taking a boric acid compound, a hydroxyl compound and a cross-linked polyurethane material as raw materials, carrying out in-situ reaction on the boric acid compound and the hydroxyl compound to generate a boron-oxygen polymer, and then carrying out heat exchange reaction on the cross-linked polyurethane material and the boron-oxygen polymer to obtain the cross-linked polyurethane material. The regenerated polyurethane material is prepared. Based on the reaction principle of dynamic exchange between a borate bond and a carbamate bond, a borate cross-linked polymer is mixed into cross-linked polyurethane, a boron-oxygen covalent bond is implanted into a molecular chain segment of polyurethane through an exchange reaction, and an original irreversible cross-linked polyurethane network is converted into a reversible cross-linked polymer network, so that the reversible cross-linked polymer network is formed; therefore, repeated processing can be carried out, and plasticity is shown.

The application provides a modified organosilicon compound, a preparation method and application thereof, raw materials of the modified organosilicon compound include a hydroxyl-containing compound and an isocyanate single-terminated silane; the hydroxyl-containing compound includes a saturated fatty alcohol and / or a hydroxyl silicone wax. In the application, the modified organosilicon compound has good hydrophobicity and strong crosslinking capacity, can effectively improve the hydrophobicity, mechanical property and the like of a material, and obtain a material with more excellent comprehensive performance; and the raw materials of the modified organosilicon compound are widely sourced and low in price, thereby effectively reducing the production cost.

The invention belongs to the technical field of polymer synthesis, and discloses polyether as well as a preparation method and application thereof. The polyether has a structural general formula as shown in formula (I), n is an integer of 2-200, and R1 and R2 are the same or different organic groups. The preparation method comprises the following step: in an inert or air atmosphere, carrying out polymerization reaction on a binary alkyne aldehyde compound and a binary hydroxyl compound in an organic solvent to obtain the polyether. According to the invention, the alkyne aldehyde monomer is designed and synthesized, and the high reaction activity of the monomer enables the monomer to be polymerized with a hydroxyl compound under the condition of no metal catalysis. The method is simple and efficient, and the polymer with high molecular weight and good thermal stability can be synthesized. The obtained polyether contains an aldehyde group side chain, so that selective detection and high-sensitivity detection of hydrazine are realized; and the structure and the function of the polymer can be expanded through a post-modification way. Formula (I)

The invention provides a simple, low-consumption, short-range and efficient preparation method of a polyamide nanofiltration membrane and application of the polyamide nanofiltration membrane. The preparation method comprises the following steps: (1) cutting a polyethersulfone ultrafiltration base membrane, ultrasonically cleaning the polyethersulfone ultrafiltration base membrane with an ethanol solution, and soaking the polyethersulfone ultrafiltration base membrane in pure water; (2) fixing the base film on the frame; (3) mixing and dissolving an amino-hydroxyl compound in an ultra-low-concentration PIP solution to form a uniform water-phase reaction monomer solution, and contacting the water-phase reaction monomer solution with the front surface of the fixed base membrane; and (4) rapidly pouring an n-hexane oil-phase monomer solution containing trimesoyl chloride into the surface of the membrane to start short-range-efficient interfacial polymerization reaction. According to the invention, an amino-hydroxyl compound additive is used as an auxiliary agent, and through hydrogen-bond interaction and electrostatic interaction between a hydroxyl functional group of the amino-hydroxyl compound additive and an amino functional group on the PIP, the PIP is prepared; a hydrogen chloride byproduct generated in the interfacial polymerization reaction process is used for assisting in carrying the PIP water-phase monomer to move towards a water / oil interface and participate in the reaction through amino on the protonated amino-hydroxyl compound.

Aqueous treatment compositions for crude oil and / or petroleum distillates to remove sulfur compounds therefrom and treatment methods using such compositions are disclosed. The composition has less than 0.5% wt / wt di- or tri-benzohydroxy compound, a strong base, less than 1% wt / wt divalent metal gluconate, a balance of water, and a pH that is 9 or greater. The treatment method includes adding said treatment composition to crude oil or a petroleum distillate to form a mixture having 0.001% to 0.02% wt di- or tri-benzohydroxy compound / wt oil and 0.001% to 0.03% wt divalent metal gluconate / wt oil and mixing the same together.

The invention relates to the technical field of automobile coating rubber, in particular to high-viscosity anti-aging coating rubber and a preparation method thereof.The high-viscosity anti-aging coating rubber comprises a main agent and a curing agent, preparation raw materials of the main agent at least comprise an HDI end-capped modified hydroxyl mixture and modified amine, and the curing agent is a combination of an HDI tripolymer and an isophorone diisocyanate end-capped hydroxyl compound; the HDI-terminated modified hydroxyl mixture is prepared by terminating a modified hydroxyl mixture with HDI, and the modified hydroxyl mixture at least comprises the following preparation raw materials in parts by weight: 45-70 parts of an alcohol-terminated prepolymer, 30-50 parts of poly (1, 4-butylene adipate) glycol and 2-5 parts of 2, 2-dimethylolpropionic acid. By adopting the specific modified hydroxyl mixture, the modified amine and the curing agent, the main agent and the curing agent have longer service time after being mixed, meanwhile, the excellent initial bonding strength and low-temperature resistance of the product are ensured, and the actual application requirements are better met.

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 present disclosure provides methods for recovering reactive diluent components from 3D printed crosslinked polymeric materials. The reactive diluent components can be recovered either as hydroxyl-containing compounds cleaved from pendant ester groups attached to the polymer backbone, or as (meth)acrylate monomers by cleavage of the polymer backbone itself. The recovered hydroxyl-containing compounds and (meth)acrylate monomers can be reused for the fabrication of new medical devices by 3D printing.

The invention discloses a preparation method and application of an in-situ copolymerized PIM-pillararene composite membrane, a tetrahydroxy-containing compound and a tetrafluoro-containing compound are used as reaction monomers, a precursor matrix is synthesized by adjusting the proportion of the tetrafluoro-containing compound, and then a mixed matrix polymer is obtained by in-situ doping of polyhydroxy pillararene. Dissolving a polymer in an organic solvent to obtain a membrane casting solution; and coating a solvent-resistant substrate with the membrane casting solution, and drying in a drying oven to obtain the composite membrane with high separation performance. Fluorine groups in a PIM matrix and hydroxyl groups on cyclic polyhydroxy aromatic hydrocarbon molecules are subjected to chemical cross-linking reaction to enhance the porosity of the polymer and increase the specific surface area, and column aromatic rings are introduced to promote adsorption of guest molecules, so that rich high-performance transmission channels are formed. On the basis of PIM synthesis, a polyhydroxy pillar arene compound is further introduced, the membrane stability can be improved through a rich net structure, and the separation performance of common organic solvents is remarkably improved.

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 invention discloses a rosin graft copolymer and a preparation method thereof, and the preparation method comprises the following steps: mixing a hydroxyl-containing compound, an organosilicon polymer and an acidic compound for esterification reaction to obtain a poly-organosilicon cross-linking agent; the organic silicon polymer comprises one or more of a carboxyl organic silicon prepolymer, a double-end single-hydroxyl organic silicon prepolymer, a single-end double-hydroxyl organic silicon prepolymer or a hydroxyl organic silicon oligomer; and mixing the polyorganosilicone cross-linking agent, epoxy resin and first-grade rosin for grafting reaction to obtain the rosin grafted copolymer. According to the rosin grafted copolymer containing the polyester cross-linking agent, the polyester cross-linking agent is mainly used for fully cross-linking the rosin grafted copolymer, and the rosin grafted copolymer containing the polyester cross-linking agent has high molecular weight and softening point and good oil solubility; the purpose of adding the polyorganosilicone is to improve the dispersibility of the resin to pigments and fillers and the wettability and the printability of the resin to a substrate.

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 application relates to the field of polyurethane foaming materials, and discloses a low-VOC polyurethane foaming compound and a preparation method thereof; the low-VOC polyurethane foaming compound comprises A component and B component which are mutually packed, the A component comprises low-aldehyde polyether polyol, polyether carbonate polyol, functionalized polyurethane oligomeric polyol, reactive tertiary amine catalyst, foam stabilizer and water, and the B component comprises a low-free-monomer isocyanate component; the functionalized polyurethane oligomeric polyol is prepared by reacting polyether carbonate polyol, diisocyanate and a hydroxyl compound containing a 1,3-dicarbonyl structure and having two or more hydroxyl groups. The preparation method comprises the steps of functionalized polyurethane oligomeric polyol preparation, A component dispensing, B component dispensing and packing. By introducing the reactive oligomeric polyol with the 1,3-dicarbonyl structure into the foaming system, the volatile components brought by raw materials can be reduced, and the continuous control ability of aldehyde components in the foaming process and the post-maturation process can be improved.

A two-component aliphatic polyurethane system for preparation of coatings, a coating made therefrom, and methods of making the same. The coating system contains component (A) a hydroxyl-containing compound and component (B) an aliphatic isocyanate and / or a cycloaliphatic isocyanate. The coating composition of the present invention is water-based and free from volatile organic compounds. The coating composition also may be composed of one or more bio-based material totaling from 24% to 95% and may have high solids of over 60% after component A and B are mixed, which can then be reduced with water up to 50%

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.