4results about How to "High response controllability" patented technology

The invention discloses a WS2 / W composite material, a preparation method thereof and application of the WS2 / W composite material in a sodium-sulfur battery. The preparation method comprises the following steps: uniformly stirring isopropanol and acetone to obtain a mixed solution A; weighing tungsten hexachloride, adding the tungsten hexachloride into the mixed solution A, and uniformly stirring to obtain a mixed solution B; transferring into a reaction kettle, sealing and putting into a drying oven for reaction; after the reaction is finished, carrying out suction filtration and washing on a product by using industrial alcohol, and drying in a vacuum oven to obtain W18O49 powder; the method comprises the following steps: weighing W18O49 powder and sublimed sulfur, respectively and correspondingly placing the W18O49 powder and sublimed sulfur in a first porcelain boat and a second porcelain boat, then placing the second porcelain boat in the first porcelain boat, placing the second porcelain boat in a tubular furnace, introducing argon into a furnace chamber of the tubular furnace, after the pressure of the furnace chamber is increased to 0.2-0.3 MPa, keeping the airtightness of the system, heating to 1100-1300 DEG C at the rate of 20 DEG C / min, keeping the pressure at 0.2-0.3 MPa in the heating process, and keeping the temperature for 2-3 hours; and after the temperature reaches 1100-1300 DEG C, continuously preserving heat for 2 hours, introducing argon, cooling to room temperature, and collecting to obtain WS2 / W powder. The problems of poor conductivity of the sulfur positive electrode, polysulfide shuttle effect and slow reaction kinetics are solved.

The invention discloses 1-(4-aminophenyl)-3-[(4-aminophenyl) carbamoylamino] urea as well as a preparation method and application thereof. The 1-(4-aminophenyl)-3-[(4-aminophenyl) carbamoylamino] urea product is obtained by reacting p-phenylenediamine and diethyl azodicarboxylate under the action of a catalyst. The method is simple in process, milder in reaction condition, easier to control, high in environmental protection property, low in danger coefficient, high in yield and more suitable for industrial application. The product can interact with carbon black to improve the dispersion of carbon black with high specific surface area, can react with carbon-carbon double bonds in natural rubber to form a stable cross-linked network, improves the anti-reversion performance of a rubber material, and has more important social significance and higher economic value.

The invention discloses a monomolecular bifunctional organic catalyst, the structural formula of which is shown in the following formula (I), in the formula (I), X is selected from a group containing urea or thiourea, the structural formula is shown in the following formula (II), Y is selected from a potassium alkoxide or sodium alkoxide group, the structural formula is shown in the following formula (III), and L is selected from unsubstituted C2-C4 alkyl; the monomolecular bifunctional organic catalyst disclosed by the invention is novel in structure, and has ultrahigh activity and high controllability when catalyzing a ring-opening polymerization reaction of cyclic lactone, the highest conversion number (TON) can reach 900, the highest conversion frequency (TOF) can reach 4860 min <-1 >, and the prepared polymer has high molecular weight and low molecular weight distribution. # imgabs0 #

The invention discloses a formula of an electrolyte membrane. The formula of a non-woven fabric comprises PET (Polyethylene Terephthalate) fiber, tencel fibrillated fiber and a radiation sensitive agent, the formula of the polymer electrolyte comprises PEO powder, lithium salt, a heat stabilizer, an antioxidant and a plasticizer; the invention also discloses a preparation method of the electrolyte membrane, which comprises the following steps: firstly preparing the modified PET non-woven fabric, adding the PET fiber, the tencel fibril chemical fiber and the radiation sensitive agent into deionized water, carrying out planetary stirring and dispersion, then putting into a sealing bag, introducing nitrogen, carrying out electron beam irradiation, and sequentially carrying out dehydration, forming, flattening, drying and flattening to form the modified PET non-woven fabric; preparing an electrolyte membrane: adding a plasticizer, a stabilizer, a lithium salt and an antioxidant into the PEO powder, stirring to form a polymer electrolyte, extruding the polymer electrolyte to the surface of the modified PET non-woven fabric, compacting and cooling to form the electrolyte membrane; the modified PET non-woven fabric matrix polymer electrolyte membrane prepared by the formula and the preparation method has better mechanical strength and ionic conductivity, and is high in processing efficiency and low in cost.