54results about How to "No carbonization" patented technology

The invention discloses a bamboo fiber / polylactic acid composite material and a preparation method thereof. The bamboo fiber / polylactic acid composite material specifically comprises the following rawmaterials in parts by weight: 60-80 parts of polylactic acid, 10-30 parts of talcum powder, 3-15 parts of modified bamboo fibers, 2-15 parts of a flexibilizer, 0.1-0.3 part of a coupling agent, 0.1-0.3 part of an antioxidant, 0.2-0.6 part of an auxiliary antioxidant, 0.2-0.5 part of a lubricating agent, 0.2-1 part of a nucleating agent, 0.1-0.3 part of an anti-floating fiber agent and 0.5-3 partsof a hydrolysis resistance agent. According to the composite material disclosed by the invention, the bamboo fibers are modified and thermally treated, the bamboo fibers and talcum powder are treatedby using the coupling agent, and according to a certain mixing sequence and suitable extrusion process parameters, the problems that the bamboo fiber / polylactic acid composite material is rough in surface and has silver filaments and local black spots and the compatibility between the polylactic acid and the bamboo fibers is poor are solved.

The invention discloses a direct reduction process for sponge iron production implemented by using the non-catalytic conversion of CH4, and the direct reduction process comprises the following steps: feeding a feed gas rich in CH4 and subjected to purification and pressure regulation and a stock gas output by a shaft furnace and subjected to cooling, dust removal, pressurization and decarburization into a tube furnace together and preheating; feeding the preheated coal gas into a non-catalytic pure oxygen reforming furnace, performing combustion reaction and heating on the preheated coal gas and oxygen in the non-catalytic pure oxygen reforming furnace, and performing non-catalytic conversion on the CH4 so as to generate CO+H2; after the high-temperature coal gas discharged from the non-catalytic pure oxygen reforming furnace and the stock gas discharged at the front end and subjected to cooling, dust removal, pressurization and decarburization are mixed and cooled, feeding the mixed gas into the shaft furnace and reducing iron ores, thereby producing sponge irons; and after the stock gas discharged from the shaft furnace is subjected to cooling, dust removal, pressurization and decarburization, feeding part of the stock gas and the supplementary feed gas rich in CH4 into the tube furnace and the non-catalytic pure oxygen reforming furnace together, wherein the other part of the stock gas is used as the cold-doped coal gas of the high-temperature coal gas discharged from the non-catalytic pure oxygen reforming furnace. Because the preheating temperature is low, no carbon precipitation occurs, and no strict limitation on the H2S content of the feed gas rich in CH4 exits, so that the bonding of the sponge irons can be prevented.

The invention relates to a preparation method for organosilicone positive ion waterborne polyurethane. The preparation method comprises the following steps: (1) reacting diethylamine with allyl chloride in the presence of an alkaline to generate diethyl allylamine; (2) carrying ring opening on D4 under the effect of a catalyst and blocking by using HMM (hexamethylmelamine) to generate dihydro-blocked polysiloxane; (3) carrying out hydrosilylation reaction on dihydro-blocked polysiloxane and diethyl allylamine; (4) carrying out quaternization reaction on the production of the addition reaction and chloropropanol; and (5) generating a prepolymer through reaction between HMDI and PTMEG1000 and extending chains in water by using the quaternization product to generate the organosilicone positive ion waterborne polyurethane. The preparation method provided by the invention is simple and convenient to operate, mild in reaction condition, free of carbonization and products are easily separated and recycled. Firstly, polysiloxane with amido at two terminals is salified and then chains are extended, and the conventional step of salifying positive ions with an acid and then neutralizing is cancelled, so that use of a nitrogen-containing chain extender is reduced, the cost is saved and the problem that positive ion polyurethane gets yellow is prevented.

A vertical probe card is prepared as setting multiple concave conductive groove on surface of circuit board as each said groove being set with a ring wall, setting multiple through hole on guide mechanism being set at circuit board surface with conductive groove, setting the first end of probe in said conductive groove to make probe be connected against with ring wall and be electrically connected to circuit board and passing the second end of probe through said through hole set on guide mechanism.

The invention discloses carbonation-resistant basic magnesium sulfate cement. The carbonation-resistant basic magnesium sulfate cement is prepared from the following components in percentage by mass: 40 to 55% of magnesium oxide, 20 to 25% of magnesium sulfate heptahydrate, 10 to 20% of industrial waste residue powder, 5 to 9% of white slag, 3 to 8% of mineral admixtures, 2 to 4% of desulfurization gypsum, 6 to 8% of mineral slag, 2 to 4% of straws, 1 to 3% of silica fume and 1 to 3% of adjustable solidification agent. Proper additives are added in magnesium oxysulfate cement to form a novel basic magnesium oxysulfate phase; the carbonation-resistant basic magnesium sulfate cement with totally different property and performance from traditional magnesium oxysulfate cement is produced; the main hydration product of the basic magnesium sulfate cement is 517 crystal whisker; the carbonation-resistant basic magnesium sulfate cement is novel special cement with features of self-formed crystal whisker, high intensity, high toughness, high ratio of compressive strength, carbonation resistance, brine resistance, hydrothermal resistance, seawater corrosion resistance, shock resistance, antifatigue, corrosion of steel bar resistance, high durability and long service life.

The invention discloses a method for processing an yak horn comb blank, which comprises the following steps: (1) preparing the primary yak horn comb blank: choosing an yak horn with the shape and thickness suitable for making a comb, cutting off leftover materials, making the yak horn into the primary yak horn comb blank by cutting the yak horn from the middle part along the direction extending towards the ox-head from the tip of the yak horn, and storing for later use; (2) heating and softening: putting the made primary yak horn comb blank into a paraffin liquid which is melted and is at 120-150 DEG C, and heating and softening for 2-3 minutes; and (3) preparing the yak horn comb blank: putting the softened primary yak horn comb blank into a pressing machine for flattening and straightening the primary yak horn comb blank, and obtaining the yak horn comb blank after cooling the flattened and straightened primary yak horn comb blank. By using the method provided by the invention, the phenomenon that a large amount of water is sucked in the process of preparing the yak horn comb blank is completely eradicated, the original organic matters of the raw materials are protected well, the yak horn comb blank cannot be easily carbonized in the preparation process, the prepared product is difficult to deform and is not brittle, the yak horn comb blank can be produced in batch, and the quality and the service life of the yak horn comb blank are promoted.

The method for preparing long-chain dicarboxylic acid dialkyl ester uses dicarboxylic acid of C8-C18 and excess C6-C18 monobasic alcohol as raw material, adopts proper acidic resin as catalyst, and makes them implement esterification reaction at higher temp., at the same time of esterification the formed water content is evaporated out, the conversion rate of reaction can be raised, and the reaction liquid can be undergone the processes of distillation, etc. and can be purified. Said invention has the advantages of short process, high esterification rate, short operation period, and low energy consumption, etc.

The invention discloses an all-in-one rosin decoction machine which comprises a rosin melting device and a temporary storage device. The rosin melting device comprises an air cylinder, a heating tankand a discharging basket, wherein a sliding rail is arranged above the heating tank, a sliding block is slidingly connected to the sliding rail and is fixedly connected with the outer wall of the discharging basket, the upper end and the lower end of the discharging basket are open, a placement block is fixed to the upper end of the heating tank, the air cylinder is fixed to the placement block and outputs power to the sliding block through a push rod, the inner bottom of the heating tank is provided with a heat conducting plate, a first sealed cavity is formed under the heat conducting plateand is filled with heat conducting oil, a first heating rod for heating and controlling temperature of heat conducting oil is arranged in the first sealed cavity and is communicated with the temporarystorage device through a first discharging pipe. By adopting the technical scheme, rosin is not in contact with the same heat source for a long time, no carbonizing phenomenon is produced, the rosinquality is improved, and the rosin melting efficiency is improved.

The invention discloses an all-in-one rosin decoction machine which comprises a rosin melting device and a temporary storage device. The rosin melting device comprises an air cylinder, a heating tankand a discharging basket, wherein a sliding rail is arranged above the heating tank, a sliding block is slidingly connected to the sliding rail and is fixedly connected with the outer wall of the discharging basket, the upper end and the lower end of the discharging basket are open, a placement block is fixed to the upper end of the heating tank, the air cylinder is fixed to the placement block and outputs power to the sliding block through a push rod, the inner bottom of the heating tank is provided with a heat conducting plate, a first sealed cavity is formed under the heat conducting plateand is filled with heat conducting oil, a first heating rod for heating and controlling temperature of heat conducting oil is arranged in the first sealed cavity and is communicated with the temporarystorage device through a first discharging pipe. By adopting the technical scheme, rosin is not in contact with the same heat source for a long time, no carbonizing phenomenon is produced, the rosinquality is improved, and the rosin melting efficiency is improved.

The invention provides a lubricating agent for a copper cladding aluminum enamelled wire. The lubricating agent is prepared from the following raw materials in parts by weight: 30 to 40 parts of beeswax, 15 to 18 parts of 42-percent chlorinated paraffin, 5 to 7 parts of epoxidized soybean oil, 5 to 7 parts of triglyceride, 25 to 32 parts of paraffin, 8 to 14 parts of linseed oil, 22 to 35 parts of No.93 gasoline, 50 to 60 parts of absolute ethyl alcohol and 20 to 27 parts of lubricating aids. The lubricating agent provided by the invention is very suitable for being used for copper cladding aluminum enamelled wire lubrication; the kinematic viscosity of the lubricating agent is low; the lubricating performance is good; the fracturing of the enamelled wire in the lubricating process can be prevented; in addition, the stability of the lubricating agent is very high; the oxygen dissolution content is low; the deterioration cannot occur after the long-time placement in the open air. The lubricating agent can meet the lubrication use requirements of the enamelled wire at the high temperature of 132 DEG C; the lubricating agent cannot generate carbonization phenomena at high temperature; the stability of the enamelled wire cannot be changed at high temperature.

The invention relates to a method for preparing an ecological board from a moso bamboo material, and belongs to the technical field of building material production. The present invention firstly collects the bamboo leaves and trunks on moso bamboo, beats the trunks into shavings, and then exposes them to the sun and dries them for later use. The dried bamboo leaves are crushed into bamboo leaf powder, stirred and mixed evenly with polyvinyl chloride resin, and Put it in an internal mixer and put it on a flat vulcanizer for hot pressing, take it out and cold press it to get the bamboo leaf resin layer, then crush the particle board into bamboo chips, mix with polyethylene resin, limestone powder and other substances, impregnate, Filtrate, wash with ethanol, dry, banbury, plasticize, cold press to obtain the middle layer of micro-foamed bamboo chips, and finally make the bamboo leaf resin layer into the upper and lower layers, and the middle layer is the middle layer of micro-foamed bamboo chips, and carry out hot pressing and cold press. Finally, the beneficial effects of the present invention are: no bubbling, pollution resistance, no carbonization phenomenon, mass production is possible, production efficiency is improved; production steps are simple, and cost is saved.

The invention discloses a high-strength and durable heat-insulating building material, a preparation method and an application thereof. The inorganic thermal insulation building material includes the following components: magnesium oxide, magnesium sulfate, magnesium chloride, talcum powder and high-efficiency superfine building material additives. After the thermal insulation building material of the present invention is applied to the surface of the polystyrene thermal insulation board, it not only wraps the polystyrene thermal insulation board firmly, but also fully penetrates into the interior of the polystyrene thermal insulation board, and penetrates each other under the action of high pressure, forming a dense non-woven fabric after molding. The water-permeable and air-tight hard skeleton protects the included polystyrene insulation board, reduces the water absorption rate of the polystyrene insulation board, effectively prevents the transmission rate of air and water vapor, and improves the anti-aging performance of the polystyrene insulation board.