15820 results about "Organosolv" patented technology

A carbon nanotube yarn includes a number of carbon nanotube yarn strings bound together, and each of the carbon nanotube yarn strings includes a number of carbon nanotube bundles that are joined end to end by van der Waals attractive force, and each of the carbon nanotube bundles includes a number of carbon nanotubes substantially parallel to each other. A method for making the carbon nanotube yarn includes soaking the at least one carbon nanotube yarn string drawn out from a carbon nanotube array in an organic solvent to shrink it and then collecting it.

The invention relates to a high-capacity lithium-ion electrolyte, a battery and a preparation method of a battery, in particular to the high-capacity lithium-ion electrolyte and the battery using the high-capacity lithium-ion electrolyte and the preparation method of the battery. The electrolyte disclosed by the invention comprises lithium salt and non-aqueous organic solvent, and also consists of the following components in weight percent in terms of the total weight of the electrolyte: 0.5-7% of film-forming additive, 0-15% of flame-retardant additive, 2-10% of antiovefill additive, 0.01-2% of stabilizer and 0.01-1% of wetting agent; the electrolyte can enable the anode with high Ni content to work stably, and reduce the battery cost; the high-capacity lithium-ion battery can perform high ratio capacity and excellent safety and high temperature property and cyclic life fully due to the addition and synergetic functions of various functional additives.

The invention relates to a non-aqueous electrolytic solution used for lithium secondary batteries, in particular to an electrolytic solution capable of improving the high-voltage cycle performance of lithium batteries and the storage performance of the electrolytic solution. The non-aqueous electrolytic solution disclosed by the invention contains 0.01-2% by weight of antioxidant based on the total weight of the electrolytic solution, and due to the incorporation of the additives, the storage stability of the electrolytic solution is obviously improved. The non-aqueous electrolytic solution also contains lithium salt, a non-aqueous organic solvent and also contains the following components in percentage by total weight of the electrolytic solution of 0.5-7 percent of film-forming additives, 0-15 percent of flame-retardant additives, 2-10 percent of overcharge protection additives, 0.01-0.02 percent of a stabilizing agent and 0.01-1 percent of a wetting agent. According to the non-aqueous electrolytic solution provided by the invention, batteries can stably work under the high voltage of 4.3V or above, due to the synergic action of the incorporated additives with various functions, the high-capacity lithium-ion batteries can bring high specific energy into full play and have outstanding safety and high-temperature performances and cycle life.

The invention relates to an improved process for producing organomolybdenum compositions with high molybdenum content that are highly useful as lubricant additives, in which the process involves reacting a fatty oil with a diamine, followed by reaction with a molybdenum source. The process of the present invention does not require a volatile organic solvent to promote molybdenum incorporation and produces an organomolybdenum composition having a high molybdenum content. In addition, the process can be conducted in the absence of sulfur and phosphorus-containing reactants.

Disclosed is an electrolyte for batteries, comprising: (a) an electrolyte salt; (b) an organic solvent; (c) a first compound having an oxidation initiation voltage (vs. Li/Li⁺) higher than the operating voltage of a cathode; and (d) a second reversible compound having an oxidation initiation voltage higher than the operating voltage of the cathode, but lower than the oxidation initiation voltage of the first compound. Also disclosed is a lithium secondary battery comprising said electrolyte. In the lithium secondary battery, two compounds having different safety improvement actions at a voltage higher than the operating voltage of the cathode are used in combination as electrolyte components. Thus, the safety of the secondary battery in an overcharged state can be ensured, and at the same time, the deterioration of the battery can be prevented from occurring when it is repeatedly cycled, continuously charged and stored at high temperature for a long time.

The invention relates to an in-situ composite silicon-based multibasic oxide oxide aerogel material and its preparation method, especially to a multibasic oxide oxide aerogel material which is prepared by the following steps: using soluble glass as a silicon source, mixing metallic oxide corresponding water-soluble metal salt, adding acid or alkali to adjust pH value of the system so as to form multibasic oxide sol; mixing the multibasic oxide sol with a water-soluble organic solvent, filtering to remove produced precipitate so as to obtain salt-free multibasic oxide sol, carrying out a sol-gel method, aging, modifying and drying. By a mature silica aerogel technology, the multibasic oxide oxide aerogel material is prepared by in-situ polymerization of other oxide components which are not easy to separately prepare aerogel. In addition, the multibasic oxide oxide aerogel material has excellent properties, such as high temperature stability, high activity, magnetic property and the like, none of which are present in single-component silica aerogel. The product is widely applied in fields of high temperature insulation, sound insulation, catalysts, catalytic carriers, battery electrodes, electromagnetism, resistance, gas sensitivity, humidity sensitivity, luminescent materials and the like.

Separation of an anionic fluorochemical surfactant from an aqueous solution containing the anionic fluorochemical surfactant is carried out by i) contacting the aqueous solution with a basic anion-exchange resin so that the anionic fluorochemical surfactant is adsorbed on the resin, and ii) eluting the anionic fluorochemical surfactant adsorbed on the resin with an eluent which is an alkaline solution containing water and an organic solvent.

The invention relates to a preparation method of a graphene oxide/waterborne polyurethane nanometer composite material. Especially, the preparation method comprises the following steps of: utilizing gamma-aminopropyl triethoxysilane (KH550) to carry out surface modification (functionalization of graphene oxide) onto graphene oxide; lowering hydrophily of a graphene oxide sheet layer; improving dispersion of the graphene oxide sheet layer in an organic solvent and compatibility of the graphene oxide and the polymer; and utilizing an in-situ polymerization method to prepare the graphene oxide/waterborne polyurethane nanometer composite material. The preparation method of the graphene oxide/waterborne polyurethane nanometer composite material belongs to the preparation field of composite materials.

The invention discloses a multi-hole carbon fiber and a preparation method thereof. The method comprises the following steps: spinning solution composed of pore former, high polymer and organic solvent is used for spinning and then carbonization to obtain the multi-hole carbon fiber. The method has the following advantages: 1, the preparation is simple, the yield is high, and the cost is low; 2, the sizes of holes of the multi-hole carbon fiber can be controlled conveniently by changing the preparation parameters; 3, the used pore former can performing pore-forming in a self sublimation manner and can be reclaimed for use, so that the preparation cost can be lowered greatly; and 4, the obtained carbon fiber has a multi-hole structure, so that the bendability is improved, and the carbon fiber can be bent and folded at will instead of being broken, and can support a finished film independently.

The invention relates to a preparation method of a catalyst for acrylic acid by oxidizing acraldehyde, which is characterized by comprising the following steps of: dispersing water soluble metal salts containing the components of Mo, V, W, Cu and Sb into a water/organic phase mixed system at the temperature of 30-100DEG C; maintaining the weight ratio of an organic solvent to water as 5-50 percent; reacting to generate composite oxide precursor serum; separating water by a distilling process under the condition of continuously supplementing organic phases at the temperature of 20-120DEG C, wherein the water content of distillate is not greater than 10 percent; then, pelleting by a spray drying process and roasting at the temperature of 200-600DEG C to prepare catalyst active components; mixing primary roasting powder, a forming additive and a strength improver; coating the active components on the surface of an inert carrier by using an adhesive, wherein the carrying capacity occupies5-70 percent of the total quantity of the catalyst; drying a formed product for 5-48 hours at room temperature; and then, roasting the formed product for 1-15 hours at the temperature of 200-600DEG Cto obtain a spherical catalyst with the active components carried on the inert carrier.

A water nan-composite thermal-insulating coating for external wall and its production are disclosed. The coating consists of water, polymer emulsion, high-refractive index pigment, filler, nano-tin-antimony oxide slurry, nano-SiO2, wet dispersant, filming accessory, pH adjuster, thickener, de-foaming agent, anti-freezing agent and mildew-proof bactericide. It's cheap and simple, has excellent wash and weather resistances, better thermal-insulating performance, safe storage and no environmental pollution. It can be used for apparatus surface and architecture external wall.

A modular process for organosolv fractionation of lignocellulosic feedstocks into component parts and further processing of said component parts into at least fuel-grade ethanol and four classes of lignin derivatives. The modular process comprises a first processing module configured for physico-chemically digesting lignocellulosic feedstocks with an organic solvent thereby producing a cellulosic solids fraction and a liquid fraction, a second processing module configured for producing at least a fuel-grade ethanol and a first class of novel lignin derivatives from the cellulosic solids fraction, a third processing module configured for separating a second class and a third class of lignin derivatives from the liquid fraction and further processing the liquid fraction to produce a distillate and a stillage, a fourth processing module configured for separating a fourth class of lignin derivatives from the stillage and further processing the stillage to produce a sugar syrup.

Reversed phase suspension polymerization is allowed while controlling content of minor components in monomer, particularly controlling a content of acetic acid and propionic acid being not higher than 500 ppm, controlling a content of acrylic acid dimer being not higher than 1000 ppm, in acrylic acid. Cross-linked polymer obtained by the polymerization is subjected to a surface crosslinking treatment without substantially using an organic solvent, and under heating at high temperature (150° C. or higher and 250° C. or lower). Thereafter, agglomeration is carried out without substantially using an organic solvent. Accordingly, a particulate water-absorbing agent including a water-absorbing resin having superior property, and being suited for practical applications at high concentrations in absorbing cores such as a diaper and the like without generation of any odor of the organic solvent can be obtained because no volatile organic compound is included.

The invention discloses a transparent high-strength fiber material. The preparation method comprises the following steps that: cellulose is dissolved in NaOH-urea aqueous solution or LiOH-urea aqueous solution which is pre-cooled at low temperature to obtain a cellulose solution, and different thicknesses of cellulose hydrogels are prepared by the cellulose solution; water in the cellulose hydrogel is replaced into an organic solvent to obtain a cellulose organic gel; the cellulose hydrogel or the cellulose organic gel is subject to supercritical drying, ambient pressure drying or freeze drying to remove a liquid medium so as to obtain a cellulose aerogel; and the cellulose hydrogel, the organic gel or the aerogel are autoclaved at a temperature of 30-200 DEG C under the pressure of 10-160Mpa to obtain the high-strength transparent cellulose material. The cellulose material prepared by the invention has excellent mechanical properties, thermal stability and optical permeability.

The invention relates to a xanthophylls microcapsule and a preparation method thereof. The core material of the microcapsule is xanthophylls and the wall material is natural macromolecule chitosan or glutin, gum acacia and antioxidant. The technique has the following steps: the xanthophylls is dissolved in an organic solvent, which is added into a gum acacia solution containing emulsifier and antioxidant for uniform emulsion; the well emulsified gum acacia is added into the chitosan or glutin solution for being condensed into capsules, and the capsules are processed with magnesium stearate after solidification; the microcapsules with excellent dispersivity are obtained after drying. The microcapsule prepared by the technique has the grain diameter of 1-200 Mum. The preparation technique has simple process, mild preparation condition and easy popularization; the microcapsule prepared has good dispersivity and high stability and is suitable for industries such as food, health care products, feed, etc.

The invention belongs to the technical field of self-repairing elastomer materials, and discloses a high-strength room-temperature self-repairing polyurethane elastomer based on multiple dynamic reversible effects as well as preparation and application thereof. A preparation method comprises the following steps: 1) reacting a dihydric alcohol with a diisocyanate under the action of a catalyst to obtain a prepolymer; wherein the dihydric alcohol is a mixture of more than one from a polyether glycol and a polysiloxane glycol; 2) reacting a dicarboxylic acid chain extender with the prepolymer toobtain an oligomer; adding a diamine chain extender, continuously reacting, and carrying out subsequent treatment to obtain polyurethane; wherein the dicarboxylic acid chain extender and the diamine chain extender are collectively called as chain extenders, and the chain extenders contain disulfide bonds and pyridine groups; 3) in an organic solvent, reacting polyurethane with a metal salt cross-linking agent, and removing the solvent to obtain the high-strength room-temperature self-repairing polyurethane elastomer. The preparation method is simple and mild in condition, and the prepared polyurethane elastomer is excellent in mechanical property and high in self-repairing efficiency and is applied to a flexible substrate materials, wearable equipment and intelligent protective coating.

The invention provides a preparation method of solvent-free environment-friendly polyurethane automobile leather. The automobile leather comprises a surface layer and a foaming layer, wherein both the surface layer and the foaming layer are made of double-component solvent-free polyurethane; each of solvent-free environment-friendly polyurethane surface layer rein and solvent-free environment-friendly polyurethane foaming layer resin respectively used in the surface layer and the foaming layer is composed of a solvent hydroxyl mixture component A and an isocyanate component B. The specific preparation method of the automobile leather comprises the following steps: blade coating a shell fabric, drying the shell fabric, blade coating the foaming layer resin, adhering base cloth when the foaming layer resin is half-dry, curing and rolling. The automobile leather is prepared from the solvent-free environment-friendly polyurethane resin by one-step molding on a dry-method production line; the preparation method gets rid of a wet-method process flow in the traditional production process of polyurethane automobile leather and the production procedure is shortened for one half; no organic solvent is discharged, and the production process and finished products are friendly to the environment.

The invention discloses an electrolyte for a Li-S battery. The electrolyte mainly comprises electrolyte salts and an organic solvent, wherein the electrolyte salts contain lithium polysulfide, and the molecular formula of the lithium polysulfide is Li2Sn. A preparation method of the electrolyte comprises the following steps of adding lithium metal or Li2Sn and elemental sulfur into the organic solvent according to a molar ratio and carrying out reaction at room temperature and under the protection of an inert atmosphere to generate the electrolyte, wherein lithium salts, shuttle inhibitors and the like can be selectively added to the electrolyte. The invention further discloses a Li-S battery containing the electrolyte; a negative active material is the lithium metal or lithium-containing alloy; a positive active material is at least one of the elemental sulfur, organic sulfides and carbon-sulfur polymer, and the positive pole is composed of the positive active material, a conductive agent and a binding agent which are mixed in a certain mass ratio; and the dosage of the electrolyte is about 0.04 mL relative to every milligram of sulfur. The Li-S battery disclosed by the invention has the advantages that the sources of raw materials are broad, the energy density of the Li-S battery can be increased, and the cycle life of the Li-S battery can be prolonged.