111results about How to "Not easy to gel" patented technology

The invention relates to a LiNiCoAlO2 composite cathode material and a preparation method thereof, and a lithium ion battery. The composite cathode material is of a core-shell structure, wherein a core is LiNi1-x-yCoxAlyO2 subjected to washing treatment by using a mixed solution of alcohol and organic acids, x is greater than 0 and less than or equal to 0.2, and y is greater than 0 and less than or equal to 0.1; and a shell is a metal oxide layer. According to the invention, the composite cathode material is prepared by using a process combining an operation of washing a base material by using a mixed solution of alcohol and organic acids and an operation of carrying out spray drying on a material wrapped on the shell layer. The composite cathode material disclosed by the invention is low in lithium impurity content and high in high-temperature cycling and high-temperature storage performances.

The invention discloses long-chain branched polyester and a preparation method thereof. The long-chain branched polyester is obtained by carrying out esterification and polycondensation on a diacid component A, a diacid component B and a bifunctional branching agent component C such as biglycidyl ester, diglycidyl ether or glycidol and the like. According to the invention, a non-toxic bifunctional branching agent is directly adopted to in situ generate branching points; the preparation method is unique, preparation process is simple and environmentally-friendly, branching reaction is uniform,branching degree is easy to regulate and control, and the high molecular weight long-chain branched polyester can be prepared; and the preparation method can be used for preparation of non-degradablepolyester and preparation of biodegradable polyester, thereby being beneficial to the realization of commercialization. The long-chain branched polyester has the characteristics of long-chain branching and large molecular weight in structure and is beneficial to increase of melt strength and improvements of blow molding and foaming processing performance.

The invention discloses a CaZrO3 mold shell used for titanium and titanium alloy precision casting and a preparation method, which is characterized in that calcium zirconate is taken as a filling material, binders which are not reacted with a titanium alloy such as zirconium acetate or yttrium sol are pretreated, molded, hardened, roasted and the like to prepare the mold shell. The mold shell has small reaction degree with titanium and the titanium alloy, the thickness of contamination formed on the casting surface is small; the calcium zirconate ceramic mold shell has high strength, the casting surface has high fineness; a paint containing calcium zirconate is stable and is not easy to be gelled, the suspensibility is good, and the preservation time is long.

The invention discloses a preparation method of an anion sulfonate type coal water slurry dispersant. A terpolymer is prepared from an anion monomer and a sulfonate monomer as reaction monomers under the action of an initiator and a chain transfer agent through free radical polymerization. By using the dispersant obtained by the preparation method disclosed by the invention, coal water slurry with solid content of 60-70% has excellent dispersion and stabilization effects; and the dispersant is suitable for various coal species, in particular slurrying of coal with poor quality.

The invention discloses a preparation method of hyperbranched polyurethane / polyacrylate damping material, which comprises the following preparation steps: (1) partially end capped waterborne polyurethane prepolymer is synthesized by a traditional method; (2) the self-made hydroxyl-terminated hyperbranched polyurethane is reacted with isocyanate group to be grafted to the waterborne polyurethane prepolymer, thereby obtaining hyperbranched waterborne polyurethane prepolymer; (3) triethylamine and partial vinyl monomer are added in the prepolymer to ionize, and added with water to disperse to obtain polyurethane / vinyl monomer dispersing liquid under high-speed stirring; (4) the temperature of the dispersing liquid is raised to 65-80 DEG C, and the dispersing liquid is dripped with residual vinyl monomer, initiator and a crosslinking agent to react for 2-6h in heat preservation; and the reacted liquid is cooled to obtain the hyperbranched polyurethane / polyacrylate emulsion. The material obtained by coating the hyperbranched polyurethane / polyacrylate emulsion and curing has the characteristics of excellent damping performance and heat resistance, can be used in the fields such as automobile industry and constructional engineering, and has wide application prospect.

The invention provides a preparation method of organic fluorine modified hyperbranched water-based polyurethane. The method comprises the following steps: (1), synthesizing water-based terminal hydroxyl hyperbranched polyurethane core; (2), synthesizing a double bond end capped linear polyurethane prepolymer through diisocyanate, low polymer divalent alcohol, a chain extendor, an end-capping reagent and the like; (3), grafting linear polyurethane onto terminal hydroxyl hyperbranched polyurethane; (4), leading a fluorine element onto a polymer through an emulsion method, so as to obtain the organic fluorine modified hyperbranched water-based polyurethane. According to the organic fluorine modified hyperbranched water-based polyurethane provided by the invention, raw materials are cheap and readily available, and are wide in sources, the synthesis process is simple, and industrialized production is facilitated. The organic fluorine modified hyperbranched water-based polyurethane is appropriate to be used independently, can be matched with other water-based resins, can be applied to the fields of water-resistant paints, environment-friendly water-based adhesives, water-based paints and the like, and has a broad application prospect.

The invention discloses a preparation method for a stable borosilicate sol with a high specific surface area. The preparation method comprises the following steps of: removing cation from mixed solution of water glass and a boron salt by using a strongly acidic cation exchange resin; and obtaining the stable borosilicate sol with the high specific surface area by alkalizing, curing, stabilizing, purifying, concentrating, protecting and stabilizing, wherein the specific surface area is up to 900 to 1,400 m<2> / g; the particle size of the sol is of between 2.0 and 3.0nm; and an S value is less than 30 percent. The preparation method of the invention has the characteristics of easy control and high repeatability and is suitable for industrialized production; and the obtained silica sol has the characteristics of extremely high stability, not easy gelatinization and high storability, can serve as a retention and filtration aid in a paper-making process, and also can be widely used in projects or departments such as petrochemical industry, light textile, environmental protection and the like.

The invention discloses an oxidized starch adhesive and a preparation method thereof. The oxidized starch adhesive is mainly prepared from the raw materials of, by weight, 100 parts of starch, 3-5 parts of hydrogen peroxide, 0.1-0.5 parts of a potassium permanganate solution, 0.4-1 part of s catalyst, 9-11 parts of sodium hydroxide, 1-3 parts of a crosslinking agent, 300-500 parts of water, and 0-0.5 parts of a defoaming agent. According to the invention, hydrogen peroxide and the potassium permanganate solution are both used as oxidizing agents, and cooperates to provide a synergistic effect in carrying out oxidization treatment upon the starch material. The oxidization speed is high, and the dose of oxidizing agent is low. The obtained oxidized adhesive has the advantages of high bonding strength, good stability, good gelling resistance, long storage time, short drying time, good environment friendliness, and low cost. The adhesive is nontoxic and harmless, and can be widely applied in the fields of papermaking, trademark, textile, and the like.

The invention relates to a hyperbranched polythioether preparation method. According to the preparation method disclosed by the invention, a bi-functionality asymmetric alkene compound and tri-functionality sulfur alcohol are utilized as raw materials, thiol-ene is utilized to perform unequal-reactivity addition reaction, and hyperbranched polythioether is synthesized by a one-pot method. The preparation method disclosed by the invention has the advantages that the raw materials are easy to obtain, and the steps are simple; a terminal group of the prepared hyperbranched polythioether is sulfydryl; functional modification can be further performed; thus, the hyperbranched polythioether with specific performance can be prepared.

The invention provides a reverse osmosis membrane scale inhibitor. The reverse osmosis membrane scale inhibitor mainly comprises organic phosphonic acid, organic carboxylic polymers, sulfonic copolymers, a quaternary phosphonium salt, and methane dithiocyanate. The invention further provides an application of the reverse osmosis membrane scale inhibitor in scale inhibition of a reverse osmosis system. When used for reverse osmosis water treatment, the reverse osmosis membrane scale inhibitor provided by the invention can effectively eliminate membrane pollution caused by deposition of CaCO3, CaSO4, SiO2 and silicate; working efficiency of the reverse osmosis system is improved, service lives of the reverse osmosis membrane and reverse osmosis equipment are prolonged, and reverse osmosis cost is reduced; the reverse osmosis membrane scale inhibitor is compatible with various common flocculating agents such as polyaluminum chloride and cationic polyacrylamide; and a pH value is not required to regulate.

The invention discloses a delayed-combustion-retarding high-temperature-resisting workshop primer. The key technology is that high-temperature film-forming materials are used. Two high-temperature film-forming materials are compounded in the formula, the melting points of the high-temperature film-forming materials are respectively in a range of 480-490 DEG C and a range of 680-700 DEG C, accordingly a primary film material can be followed to form a secondary continuous film and a ternary continuous film before the high-temperature heat weightlessness is not yet invalid completely, and coatings are ensured to be not crack. Simultaneously, the heat resistance of the coatings reaches to more than 800 DEG C, the area of the burning loss is very small, and smoke is hardly produced in the cutting or welding operation process.

The invention discloses a polysilazane coating solution containing metallic elements and a method for preparing a high-transparency composite coating containing metallic oxide-SiO2. The polysilazane coating solution containing the metallic elements comprises polysilazane, a metallic compound, a solvent and a catalyst. The method for preparing the transparent composite coating containing the metallic oxide-SiO2 on the basis of the coating solution comprises the steps as follows: a substrate is coated with the coating solution; and high-temperature treatment is performed after low-temperature treatment and hydrolysis are performed for certain time. A mixture of one or more of SiO2 / TiO2, SiO2 / ZrO2, SiO2 / HrO2 and SiO2 / ZnO composite coatings can be prepared with the method. Compared with the prior art, the method is simpler, the application is wider, the surface of the coating layer is dense and even, the transparency is good, and the visible light transmittance is above 90%.

The invention discloses a coating liquid, an organic-inorganic hydrid cation exchange membrane and a preparation method thereof. The coating liquid comprises polyvinyl alcohol, water and a multi-silicon cross-linking agent, wherein the mass ratio of the multi-silicon cross-linking agent and the polyvinyl alcohol is (0.75-1.34):1. The multi-silicon cross-linking agent is prepared as the following process: a monomer A, a monomer B, a solvent C and an initiator D are mixed and reacted according to the molar ratio of monomer A containing a sodium benzene sulfonate group: monomer B containing an alkoxy silicon group: solvent C: initiator D = 1: (1-2.34): (38.5-87.7): (0.020-0.036). Then, 60-75% of the solvent C is removed to produce the multi-silicon cross-linking agent solution. The hybrid cation exchange membrane is obtained from the coating liquid of the invention. The membrane has the advantages of high crosslinking degree, homogeneous transparency, good mechanical property, high swelling resistance and thermostability, and can be applied to the field of alkali recovery.

A method for controlling the level degree on the ULSI multi-layer wiring in chamico-mechanical polishing includes such steps as diluting SiO2 hydrosol by deionized water, adding metal ion chelating agent to regulate pH=10-13, adding alcohol-ether kind of surfactant and oxidant while stirring to obtain polishing liquid, and polishing at 20-40 deg.C and 60-120 rpm under 100-250 g / sq.cm.

The invention relates to a method of preparing hyperbranched polythioether based on selective thiol-ene and thiol-epoxy click chemistry. According to the method, difunctional glycidyl acrylate monomers and trifunctional mercaptan are used as raw materials, and hyperbranched polythioether with a controlled skeleton and end group is synthesized by a one-pot method. The hyperbranched polythioether click chemical preparation method has the advantages that the raw material is easy to obtain, the steps are simple, the polymerization rate is rapid, the controllability is good, the skeleton of the prepared hyperbranched polythioether can be controlled, and the end group can be effectively controlled to be thiol or epoxy by using the monomeric molar ratio; functional modification can be further conducted, and the hyperbranched polythioether with particular characteristics is prepared.

The invention relates to N, N-dimethyl dodecyl terminal quaternization modified silicone oil, and a preparation method and application thereof. The preparation method comprises the steps of reacting octamethyl cyclotetrasiloxane and tetramethyl dihydro disiloxane according to the proportion in the presence of an acid catalyst so as to prepare double-terminal hydrogenous silicon oil; carrying out hydrosilylation reaction on the silicon oil and glycidyl allyl ether or allyl polyoxyethylene polyoxypropylene glycidyl ether to obtain epoxy-terminated silicone oil; and finally, carrying out aminolysis ring-opening reaction on the epoxy-terminated silicone oil and N, N-dodecyl tertiary amine to obtain the terminal quaternization modified silicone oil. The silicone oil is used as a textile finishing agent for treating cotton fabrics, so that the cotton fabrics are endowed with an antibacterial property, meanwhile, the softness of the cotton fabrics can be also improved, and the hydrophilia is better at the same time.

The present invention is composite boron nitride paint for precise invested mold casting of titanium and titanium alloy, and belongs to the field of non-ferrous metal casting technology. The composite paint consists of boron nitride 29-65 wt%, Yt sol or zirconium diacetate 33-70 wt%, surfactant 0.1-5 wt% and defoaming agent 0.1-5 wt%. The boron nitride is boron nitride 200 mesh below grains of pyrolytic boron nitride, crushed cold pressed boron nitride block, high purity boron nitride or boron nitride with small amount of flux. The composite boron nitride paint has the features of high floatability, easy maintenance and simple preparation process.

The invention relates to a field of silica gel materials, and discloses silicone resin and a preparation method thereof. The silicone resin is the silicone resin containing an alkenyl active group and having a three-dimensional mesh-like structure. The method comprises co-hydrolyzing an end-capping reagent and the silane agent containing the alkenyl functional group in the presence of an acid catalyst, adding tetrafunctional organic silicon monomer in drops, performing a hydrolysis-condensation reaction, extracting, cleaning, and distilling to obtain the silicone resin solution containing the alkenyl. The silicone resin provided by the invention not only improves adhesion, reinforcement and other aspects of performance with metal materials and inorganic materials, but also has good compatibility and dispersibility. The method for preparing the silicone resin provided by the invention uses a nontoxic and harmless extractant to substitute toluene used in prior art, and thus does not cause harm to human and pollute the environment; and the silicone resin is not easy to gel, and wide in application.

The invention discloses an environment-friendly nickel-plating rust-proof sealing agent and a preparation method thereof and belongs to the technical field of metal surface treatment. The environment-friendly nickel-plating rust-proof sealing agent is characterized in that 100 parts of the sealing agent comprise, by mass, 6.0-10.0 parts of lithium silicate, 0.6-1.5 parts of sodium silicate, 0.6-1.0 part of sodium molybdate, 0.4-0.6 part of sodium phytate, 0.1-0.2 part of benzotriazole, 0.4-0.6 part of polyethylene glycol, 0.4-0.6 part of polyving akohol, 1.0-2.0 parts of triethanolamine, and the balance deionized water. The nickel-plating rust-proof sealing agent is environmentally friendly, safe and good in stability and has remarkable anti-corrosion effect on steel nickel-plating parts, and gelling is not prone to occurring.

The invention relates to a hyperbranched polyether ester preparation method. Commercial bis-functionality haloalkane and tri-functionality hydroxyl / carboxyl are adopted as raw materials to realize one-pot synthesis of hyperbranched polyether ester through an A2+B3 polymerization method. The hyperbranched polyether ester preparation method is simple in procedures, the raw materials are easy to acquire, the prepared hyperbranched polyether ester contains high-reactivity end groups, and various functional groups or polymer chains can be introduced into the hyperbranched polyether ester by condensation reaction and ring opening reaction to prepare hyperbranched polymers with diversified performances and unique functions.

The invention relates to a catalytic cracking catalyst and a preparation method thereof. The preparation method of the catalyst comprises the following steps of: leading soluble glass and acid to contact to prepare alkaline silicasol with the pH value of 10-11.5 and the SiO2 content of 3-20wt%, mixing the alkaline silicasol and active components, pulping and drying. The pore volume of the cracking catalyst prepared by the preparation method of the catalyst in the invention is higher. The catalyst of the invention has higher capability of heavy oil cracking for catalyzing and cracking the heavy oil.

The invention provides preparation and degradation methods of hot-melt phenolic resin and a composite material thereof, and relates to the technical field of high polymer materials and chemical recovery thereof. The preparation method of the hot-melt phenolic resin comprises the following specific steps of: carrying out heating reaction on a phenolic compound and an aldehyde compound under the action of a catalyst, cooling, adding arylboronic acid and a derivative thereof, heating, boiling and refluxing again, carrying out decompression dehydration after the reaction is finished, adding a modifier and a flexibilizer, and vacuumizing to obtain the hot-melt phenolic resin. The preparation method of the hot-melt phenolic resin-based composite material comprises the following steps of: preparing a resin adhesive film from the hot-melt phenolic resin by adopting a hot-melt preimpregnation method, compounding the resin adhesive film with a fiber reinforcement body, and carrying out hot-pressing treatment to obtain the hot-melt phenolic resin-based composite material. The hot-melt phenolic resin and the hot-melt phenolic resin-based composite material are heated and decomposed in an ethanol or acetone solvent, and can be degraded and recycled. The preparation process is simple to operate and low in energy consumption, the production process is easy to control, and large-batch continuous production can be realized. The degradation process is safe, environment-friendly, green and pollution-free.

The purpose of the present invention is to provide a low-cost, clean-burning liquid sludge fuel prepared with sludge and cinder and a preparation method thereof. The liquid sludge fuel of the present invention contains the following ingredients: (A) 45 to 65 weight portions of hydrous sludge with water content between 70 Wt percent and 90 Wt percent; (B) 30 to 50 weight portions of cinder; (C) 1 to 10 weight portions of chemical additive composed of emulsifier, suspending agent or desulfurizer or any combination thereof; and wherein, the average diameter of solid particles is less than 20 microns. The unit heat value of the liquid sludge fuel is high, practicability is strong, the solid particles in the fuel are uniformly mixed, combustion is stable and sufficient, and the generation of carcinogens such as dioxin can be avoided, so the liquid sludge fuel generates no pollution. Since the liquid sludge fuel directly adopts sludge coming from Sewage treatment plants and cinder discarded by refineries, raw materials are sufficient, the cost is low, and while the discharge of urban and industrial waste water, wastes and waste gas is reduced, the wastes are changed into valuables, so the reclaiming, quantity-reducing and harmless application of the sludge and cinder can be fully realized.

The invention provides water-borne epoxy resin, a preparation method of the water-borne epoxy resin and water-borne epoxy insulating impregnating varnish prepared from the water-borne epoxy resin. Thepreparation method of the water-borne epoxy resin comprises the following steps: adding vegetable oil fatty acid, epoxy resin and a catalyst into a reaction bottle, introducing nitrogen, heating, melting materials, stirring, heating to 220 to 230 DEG C until the acid value is 5 to 10mgKOH / g, then cooling to 130-150 DEG C, adding a cosolvent and a functional hydrophilic monomer, reacting for 3-5 hours, and cooling after the acid value is 40-60mgKOH / g, thereby obtaining the water-borne epoxy resin. The preparation method of the water-borne epoxy resin is simple, the resin viscosity is low, gelis not prone to occurring, the synthesis process and the product quality are easy to control, and the prepared water-borne epoxy resin is low in smell and has good hydrolysis resistance and storage stability. The water-borne epoxy insulating impregnating varnish is good in storage stability, low in odor, good in base material wettability, high in bonding strength and excellent in water resistanceand salt spray resistance.

The invention belongs to the technical field of waterborne polyurethane adhesive, and discloses an amphoteric waterborne polyurethane adhesive with high solid content and a preparation method thereof. The preparation method comprises the following steps: synthesizing an amino-containing cationic hydrophilic cross-linker; adding polyester polyol into a polymerization reactor, distilling under reduced pressure to remove water, adding polyisocyanate and a catalyst, and reacting while stirring; adding the cationic hydrophilic cross-linker and a chain extender, and reacting while stirring; adding an organic solvent and a hydrophilic chain extender containing a sulfonic acid group, and continuously reacting while stirring; adding water and a silicane coupling agent to a dispersion barrel filled with the reactant, performing high-speed shear emulsification, and adding a post chain extender for reacting; and distilling under reduced pressure, and then adding a defoaming agent and a thickener to obtain the amphoteric waterborne polyurethane shoe adhesive with high solid content. The amphoteric waterborne polyurethane shoe adhesive with high solid content substantially does not have solvent residue, has excellent mechanical properties and good water and heat resistance, and can substitute the present commercial mature solvent type adhesive.

The invention discloses a high-refractive index methyl phenyl LED (light-emitting diode) packaging silicone rubber material and a preparation method thereof. The high-refractive index methyl phenyl LED packaging silicone rubber material comprises the following raw materials in parts by weight: 5-27 parts of base rubber, 5-10 parts of a crosslinking agent, 0.1-3 parts of a catalyst, 0.5-15 parts ofa phenyl silicon boron tackifier, 10-50 parts of a reinforcing agent and 1-3 parts of an inhibitor. The methyl phenyl LED packaging silicone rubber material has good mechanical properties and excellent heat resistance, has the light transmittance being as high as 95% and has good heat stability; a technology is simple, the molecular weight of a product is convenient to control, the product is unlikely to gel; and the material is the high-refractive index methyl phenyl LED packaging silicone rubber material.

The invention discloses a preparation method of a modified zirconium silica sol ceramic polishing liquid, and the preparation method includes the following steps: 1), a fluorine-containing surfactant is added into silica sol to form a system A, wherein the particle size of the silica sol is 5-20nm, the PH = 9.5-10.5, the mass fraction of silica is 10-30%, and the mass fraction of the silica sol in the system A is 95-99.9%; 2), the system A is stirred and heated up to 50-100 DEG C, then zirconium sol and fluorosilicate are added into the system A to form a system B, wherein the particle size of the zirconium sol is 10-20nm, the mass fraction of zirconia is 10-20%, and PH = 2-9, and the weight ratio of system A to zirconium sol to fluorosilicate is 98-99.45: 0.5-1:0.05-1; and 3), the system B is stirred, a waterproof agent accounting for 0.1-3% by weight of the system B is added, and the pH is regulated to 9.5-11. The modified zirconium silica sol ceramic polishing liquid prepared by the preparation method has the advantages of low production cost, long stable storage time, strong hardness and good polishing effect.

The invention discloses a thermoset fluororesin powder coating preparation method. The method includes the steps that 1, by weight, polymerized media, fluorine-containing monomers, functional-group-containing monomers, other monomers and initiators react with one another at the temperature of 58 DEG C to 95 DEG C for 10 h to 20 h, discharging and filtering are conducted after unreacted gas-phase monomers are cooled and recycled, and a thermoset fluororesin transparent solution is obtained; 2, by weight, the thermoset fluororesin transparent solution obtained in step 1 is placed into a closed container, then curing agents, titanium dioxide, flatting agents and defoaming agents are added to the thermoset fluororesin transparent solution to be evenly stirred, and thermoset fluororesin coating composition dispersion liquid is obtained; 3, the obtained thermoset fluororesin coating composition dispersion liquid obtained in step 2 is dried, and a thermoset fluororesin powder coating is obtained. The thermoset fluororesin powder coating preparation method has the advantages of being simple in process, high in yield and excellent in product performance.