37results about How to "Accelerates the carbonization process" patented technology

The invention discloses a method for preparing a carbide film by carbonizing graphene reinforced polyimide resin, and relates to a method for preparing a carbide film. The method solves the technical problems of high carbonizing temperature, high energy consumption, long carbonizing period and low carbonizing rate and low strength of the carbide film in the conventional method for preparing the carbide film. The method comprises the following steps of: 1, adding 4,4'-diamino diphenyl ether (ODA) and 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) into N,N-dimethyl acetamide (DMAC), and performing mechanical stirring to obtain a polyamide acid (PAA) solution; 2, adding graphene into the PAA solution, and performing in-situ polymerization reaction to obtain a solution A; 3, spreading the solution A on a clean glass plate, heating to the temperature of 60 DEG C and preserving the heat for 2 hours, heating to the temperature of 100 DEG C and preserving the heat for 1 hour, heating to the temperature of 200 DEG C and preserving the heat for 1 hour, heating to the temperature of 300 DEG C and preserving the heat for 1 hour, and thus obtaining a composite film; and 4, carbonizing, naturally cooling to room temperature, and thus obtaining the carbide film. The carbide film has excellent mechanical properties; and because the adding proportion of the graphene is increased, the mechanical properties of the carbide film are improved, the specific capacitance of the graphene is also improved, and the carbide film is suitable to be used as an electrode material.

A flame retardant aqueous liquid composition containing water, guanidine sulfamate, a citric acid compound including a metal salt of citric acid, and a water soluble polymer. A flame retardant polyurethane foam is produced by a process including the steps of providing a mixture of the above flame retardant aqueous liquid composition with a polyol and an isocyanate, and reacting the mixture in the presence of a catalyst.

The present invention relates to a process for preparing a porous graphite carbon with high crystallinity, which comprises the steps of: (a) hydrothermally treating sucrose (i.e. carbon precursor), transitional metal precursor and uniform-sized silica particles at the same time to prepare a polymer; and (b) carbonizing the polymer, which can provide a porous graphite carbon with remarkably improved crystallinity suitable for a catalyst support for a fuel cell.

The present invention relates to a halogen-free or substantially halogen-free flame-retardant composition comprising a blend of (i) at least one of each highly charring polymer (ii) at least one low volatility phosphate ester, and (iii) at least one compound which splits off a high volatility phosphorus-containing fragment. The invention also relates to a flame retarded thermoplastic composition wherein the flame retardant composition is blended with at least one thermoplastic resin (iv), preferable a polystyrene resin. The invention also relates to a process for manufacturing a flame retardant composition and a thermoplastic composition containing the same.

Combined with the current situations of serious contamination of soil PCBs and a huge quantity of waste biomass in China, the invention discloses a novel technology suitable for preparing an environmental-friendly in-situ remediation agent for PCBs contaminated soil with the waste biomass serving as raw materials. The novel technology comprises the following steps that (1) the biomass, water and ferric salts are mixed and subjected to hydrothermal coprocessing to prepare iron-loaded hydrothermal carbon; and (2) the iron-loaded hydrothermal carbon is obtained after high temperature heat treatment. The in-situ remediation agent for the PCBs contaminated soil is prepared with the waste biomass serving as a carbon source, the preparation process is simple, rapid and efficient dechlorination degradation of PCBs in the soil can be realized, and the remediation agent has the characteristics of environmental protection, low price and the like.

Coal compacts which are suitable for coking in coke oven chambers are prepared by pressing and compacting coal in a pressing device having a design which shapes the surface of the coal compacts to provide higher surface area. Already compacted coal blocks can be pressed to generate the surface shape. The resulting coal compacts exhibit significantly improved properties during the coking process, resulting in improved gas and heat exchange. A device for compacting coal preferably contains a plate provided with shaping elements on the pressing surface.

The invention relates to the field of shaft parts, in particular to a non-quenched and tempered composite shaft part. The non-quenched and tempered composite shaft part is prepared from, by mass, 0.6%-1.25% of C, 0.55%-0.62% of Si, 1.00%-1.18% of Cr, 0.2%-0.3% of Mo, 0.01%-0.03% of Al, smaller than or equal to 0.038% of P, smaller than or equal to 0.04% of S, smaller than or equal to 0.03% of Cu and the balance Fe and unavoidable impurity elements. A method for manufacturing the non-quenched and tempered composite shaft part comprises the following steps that 1, shaft part pretreatment is conducted; 2, the pretreated shaft part is put into a furnace to be subjected to carburizing operation; 3, carburizing is conducted for 8 h, the shaft part is taken out, and the quality of a surface carburized layer is inspected. According to the method, surface severe plastic deformation pretreatment is conducted on the shaft part, and then carburizing is conducted, so that the carbonation process is accelerated, the reaction temperature is decreased, and meanwhile the comprehensive effects of improving the comprehensive property of the part and reducing the cost are achieved; the cost is reduced, the structure is refined, and the strength and impact toughness are significantly improved.

A durable anti-wear coating for friction assemblies, a method of making the same and a method of using the same is provided. The method of use results in the formation of an anti-wear coating and selective carbonization of any ferrous surfaces by impregnating the surface layer with carbon, and makes it possible to selectively optimize the clearances between any bearing surface (ferrous or nonferrous). The method may take place during the standard operating process of the mechanism, without disassembly or with only partial disassembly.

The present invention relates to an apparatus for manufacturing carbon fiber by using microwaves, and more particularly, to an apparatus for manufacturing carbon fiber by using microwaves, which directly or indirectly heats and carbonizes a carbon fiber precursor by using microwaves, so that energy efficiency is improved because an entire carbonization furnace is not heated, and a property of the precursor is adjusted by a simpler method by using microwaves.

The invention discloses a preparation method for a gel material, and belongs to the field of building materials. Potassium hydroxide, methyl alcohol, water and tung oil are mixed to regulate a pH (Potential of Hydrogen), and reduced pressure distillation, cooling and dewatering are carried out; anhydride is taken, activated carbon is added for standing, and supernate, unsaturated polyester resin,benzoyl peroxide and N,N-dimethylaniline are mixed to obtain stirring mixture for standby use; potassium dichromate, distilled water, concentrated sulfuric acid and polypropylene fibers are added intomixed liquid; polypropylene fibers is taken out for cleaning with distilled water and drying, and a drying object is added into carbon fibers to be mixed to obtain mixture; vinyltriethoxysilane is added into dibenzoyl peroxide, nitrogen is introduced for protection, mixed and cooled to room temperature, coolant is added into emulsifier OP-10 and polyethylene glycol to be mixed, and the mixture isadded into mixed liquid to raise temperature to be stirred to obtain gel material base materials; lime, metakaolin, calcium stearate, palygorskite powder, sepiolite, stirring mixture and gel materialbase materials are mixed and cooled to room temperature to obtain the gel material.

A process for stabilizing lignin fibers, stabilized lignin fibers made by the process and carbonized fibers made from stabilized lignin fibers. The process includes heating lignin fibers to a temperature ranging from about 100° to about 220° C. while the fibers are in an atmosphere of air and HCl gas, generated as air is bubbled through concentrated hydrochloric acid for a period of time sufficient to stabilize the lignin fibers.

The invention discloses a carbonization and activation energy-saving integrated system for preparing activated carbon, and relates to the technical field of activated carbon preparation. According to the carbonization and activation energy-saving integrated system for preparing the activated carbon, through the arrangement of the raw material treatment assembly, when raw materials are fed, a driving motor can be started, and the starting of the driving motor can drive a rotating shaft in a feeding cover to rotate through the cooperation of the output end of the driving motor and two transmission gears; a rotating shaft is driven by a transmission gear to rotate relatively, the grinding rollers connected to the outer side of the rotating shaft in a sleeving mode can be driven to operate at the same time, the two grinding rollers operate, the fed organic raw materials are extruded and smashed, the smashed raw materials fall into a carbonization area from the interiors of a plurality of concave grooves, and meanwhile through segemetation of a plurality of cutting plates, the rolled raw materials can be divided into blocks with the same volume, so that the raw materials are heated more uniformly when being conveyed into the carbonization area and the activation area, and the carbonization and activation effects of the raw materials can be improved while the energy-saving effect is achieved.