373results about How to "No smoke" patented technology

The invention relates to the technical field of polystyrene foam materials, in particular to a high-flame-retardance composite heat-insulating foam material and a preparation method thereof. The high-flame-retardance composite heat-insulating foam material comprises polystyrene foaming particles with the density of 18 to 20 g/L and a flame-retardant composite layer wrapped on the surface of the polystyrene foaming particles, wherein the flame-retardant composite layer consists of a flame-retardant binder of 5 to 50 g/L and an inorganic flame retardant of 5 to 75 g/L. Compared with the prior art, the invention optimizes the formula of the flame retardant and adopts environment-friendly, non-toxic and low-price organic and inorganic flame retardants. The prepared composite heat-insulating material has low production cost. After the product is combusted, the product has the advantages of alveolate skeleton structure, no melted drop, low smoke output quantity, no combustion dripping substance and no particle, so the flame-retardant performance and the flame-retardant grade of the product are obviously improved and the product has wide development prospect in the heat insulation field of buildings such as roofs and walls.

The invention discloses alcohol-based fuel oil which consists of the following components in part by weight: 70 to 75 parts of methanol, 4 to 6 parts of dimethylbenzene, 4 to 6 parts of No.200 solvent oil, 4 to 6 parts of paraffin oil, 4 to 6 parts of glycerol and 5 to 10 parts of water. Flame generated in the burning process of the alcohol-based fuel oil disclosed by the invention is stronger than that generated in the burning process of diesel oil and liquefied petroleum gas; the alcohol-based fuel oil is more completely and more sufficiently burnt; tail gas generated in the burning process of the alcohol-based fuel oil is cleaner and has no odor; and the alcohol-based fuel oil has the advantages of stable performance, high thermal efficiency, economy, safety and no pollution.

The invention relates to a novel RH gunning refractory belonging to the refractory material field. The gunning refractory comprises the following raw materials in weight percent: 50-60% of fused magnesite crude powder, 15-30% of fused magnesite fine powder, 10-255% of chrome ore, 0.5-2% of slaked lime, 1-5% of light calcium carbonate, 1-4% of sodium hexametaphosphate, 2-55% of borax, 2-4% of silica powder, 0.5-4% of sodium tripolyphosphate and 0.005-0.1% of carboxymethylcellulose; and the raw materials are evenly mixed in a stirring device to obtain a finished product. The RH gunning refractory prepared from the raw materials provided by the invention is low in production cost, resistant to erosion and good in impermeability; an RH insert tube after being subjected to gunning maintainmentcan be used more than 85 times and the RH insert tube can be used for 5-6 furnaces after every time of gunning maintainment; the service life of the RH insert tube is obviously prolonged and the production efficiency is greatly improved; and in the use process, no harmless gas gives out, no peculiar smell is produced and no thick smoke is generated; and therefore the novel RH gunning refractory completely meets specified environmental indexes and utilization requirements..

The invention discloses an alcohol-based fuel combustion improver and an alcohol-based fuel. The alcohol-based fuel combustion improver consists of 4.9-93 parts by weight of co-solvent, 4.9-93 parts by weight of bio-oil, 0.1-0.3 part by weight of smoke suppression combustion improver and 1.0-3.0 parts by weight of combustion improver; and the alcohol-based fuel is formed by mixing and stirring 80-99 parts by weight of methanol and 1-20 parts by weight of alcohol-based fuel combustion improver. By adopting the combustion improver disclosed by the invention, the prepared alcohol-based fuel is a novel biological environment-friendly alcohol-based fuel, the calorific value is as high as 6,000-10,000 calories/g, and the combustion performance is good; and moreover, the alcohol-based fuel has high flash point and low volatility, and potential safety hazards in the prior art are eliminated. The alcohol-based fuel disclosed by the invention also has the characteristics of being safe and environment-friendly, reproducible, clean and sanitary, convenient to use, cheap and the like.

The invention discloses a preparation method for a sausage, comprising the steps of selecting materials, wringing, mixing materials, pickling, filling, baking, cooling, inspecting and packaging, wherein the baking process is as follows: circularly heating a heating pipe in the heating pipe by steams in a bakery built by brick structures; heating the bakery to 40 degrees centigrade; and then putting the filled sausages in the bakery; controlling the steam flow so that the sausages are baked for 4 hours when the bakery temperature is 45-50 degrees centigrade; preliminarily removing the moisturein the sausages; after 4 hours, heating the bakery to 60-63 degrees centigrade so as to bake the sausages for 7-10 hours continuously ; finally, stopping steam supply; and cooling to room temperature. The preparation method for the sausage has the following advantages: the food preparing link is safer by using the process; and the benzopyrene is avoided.

The invention belongs to welding methods, and particularly relates to a friction stir welding method for a lock bottom circular seam of a carrier rocket storage tank. The method comprises the following steps that firstly, welded parts are transformed, welding leakage grooves are formed in a tank bottom fork-shaped ring, and the welding leakage grooves are formed in the bottommost portion of a tank bottom fork-shaped circular welding seam; secondly, the welded parts are in lap joint, and the welded tank bottom fork-shaped ring is in lap joint with a short shell to form the welding joint; thirdly, welding is carried out, and welding is carried out along the welding joint through the friction stir welding manner. The method has the obvious advantages that nearly defect-free welding can be achieved, the consistency and stability of the mechanical property of the joint are obviously improved, and compared with a fusion welding lock bottom joint, the performance of the lock bottom circular seam is improved by about 20 percent to 30 percent.

The invention relates to a method for preparing a light, thin, heat-insulating and flame-retardant plush fabric. The method comprises the steps of weaving a fabric, wherein terry yarn is 98% of 32S/1 aramid fiber 1313 / 2% of conductive filament, and connecting yarn is 100D/36F polyester flame-retardant double-sided plush; causing the fabric to undergo dyeing, drying, soft forming, galling, intermediate shaping, combing, shearing and final shaping, and obtaining the light, thin, heat-insulating and flame-retardant plush fabric. The method is short in process and good in stability, the obtained plush fabric insulates heat, is light and thin, has an outstanding flame-retardant effect, does not melt, has no melting drip and does not generate smoke, the afterflame time is 0 s, the smoldering time is 0 s, the plush fabric is permanently resistant to flame and is comfortable to wear and soft in touch, the final finished knitted fabric gram weight is 271 g/m2, the heat-insulating value CLO is 0.5-1.0, and the plush fabric has good application prospects.

The invention discloses a UL94-5VA-grade high-performance flame-retardant reinforced PC (polycarbonate)/ABS (acrylonitrile butadiene styrene) blend and a preparation method thereof. The UL94-5VA-grade high-performance flame-retardant reinforced PC/ABS blend comprises the following raw materials in percentage by weight: 50-80% of PC, 10-30% of ABS, 5-10% of flame retardant and 5-20% of carbon fiber. The blend has multiple properties of high strength, high heat resistance, high flame retardance, low combustion smoking amount and the like. The obtained flame-retardant reinforced PC/ABS blend can not only meet the basic UL94V-0 requirements, but also achieve various indexes of UL94-5VA under the relatively low thickness of 2.0mm of a sample piece, the sample piece has no distortion and no perforation under multiple actions of flame and keeps the relatively complete appearance and shape, and the property has an important role for preventing fire and reducing loss against key electronic parts of automobiles, engineering machines and household electrical products.

The invention discloses a friction welding method of an aluminum guide rod and a steel claw. The method for directly welding the aluminum guide rod and the steel claw in a friction mode is adopted, four stages of frictional heating are adopted, and the rotation speed, the friction pressure and the friction time of a main shaft in the friction process of each stage are set; according to upsetting, when rotation of the main shaft is not stopped completely, rapid feeding is started, the upsetting process is started, and the phase error of the aluminum guide rod and the steel jaw is smaller than +1 degree or -1 degree when braking is over by utilizing closed-loop control. The friction welding joint of the aluminum guide rod and the steel claw is beautiful, a whole static stretching contrast test of the joint is performed on the performance of the joint, the mechanical property of an anode guide rod assembly utilizing friction welding is larger than the mechanical property of an anode rod guide rod assembly utilizing explosion soldering flakes, and therefore the mechanical strength of the joint can meet the requirement of practical application.

The invention relates to a titaniferous-spinel-added gunning mix for a steel converter, belonging to the field of refractory materials. The gunning mix comprises the following raw materials in percentage by weight: 50-60% of magnesia, 4-8% of titaniferous spinel as aggregate, 6-15% of titaniferous spinel as substrate, 20-30% of magnesium fireclay, 1-5% of cement, 2-4% of silicon micropowder, 1-3% of clay, 0.1-1% of sodium tripolyphosphate, 1-4% of sodium hexametaphosphate and 2-4% of borax. The raw materials are evenly mixed in a mixing plant to obtain the finished product. The byproduct titaniferous spinel of the ferrotitanium ferroalloy smelting product is used instead of part of magnesia and magnesium fireclay as the aggregate and substrate, thereby lowering the production cost, solving the problem of comprehensive utilization of the byproduct in the ferrotitanium production as well as the problem of environmental protection, and greatly prolonging the service life of the gunning mix. Every time the spray repair is carried out, the titaniferous-spinel-added gunning mix can be used by 8-12 furnaces, so the production efficiency of the steel converter is greatly enhanced.

The invention discloses a high-heat-insulation, ultraviolet-isolation and transparent colored master batch which comprises the following components in percentage by weight: 50-70% of resin, 0.5-10% of dispersing agent, 2-10% of heat-insulation ultraviolet-isolation nano material, 10-30% of slipping agent and 0-10% of coloring agent. The invention further discloses a preparation method of the high-heat-insulation, ultraviolet-isolation and transparent colored master batch. According to the master batch and the preparation method, the master batch and a transparent polyester chip are matched at a ratio, and subjected to extrusion and two-way stretch to produce a high-heat-insulation, ultraviolet-isolation and transparent colored film; the high-heat-insulation, ultraviolet-isolation and transparent colored film has excellent heat-insulation and ultraviolet-isolation functions; the heat-insulation and ultraviolet-isolation capacity can be adjusted as required; the color is uniform and consistent; and when the master batch is applied to PET (polyethylene glycol terephthalate) film extrusion or sheet extrusion, the master batch is smog-free, high in transparency and good in smooth effect.

The invention relates to equipment for extracting gold and silver from lead/bismuth base alloy, and belongs to the technical field of nonferrous metallurgy. The equipment comprises a vacuum furnace body, a vaporization system, a volatile substance discharging system, a crude silver alloy discharging system, a feed pipe and an exhaust pipe, wherein the vaporization system is arranged in the vacuum furnace body; the bottom of the vaporization system is communicated with the volatile substance discharging system and the crude silver alloy discharging system; the feed pipe penetrates through the vacuum furnace body to reach the top of the vaporization system; and the exhaust pipe is communicated with the vacuum furnace body. By the equipment, 70 percent of lead, antimony, arsenic and bismuth can be transformed into alloy to be removed and recovered in the vacuum distillation stage, blowing fuel is greatly saved, the labor intensity is reduced, the production environment is improved and pollution emission is greatly reduced; and the equipment has high treatment capacity, low energy consumption and high metal recovery rate, does not generate smoke or oxidizing slag, is stable and reliable, and is environment-friendly energy-saving emission-reducing equipment.

The invention discloses environment-friendly anhydrous stemming for a submerged arc furnace and a preparation method of the environment-friendly anhydrous stemming. The environment-friendly anhydrous stemming is prepared from the following raw materials in parts by weight: 10 to 20 parts of forsterite, 10 to 45 parts of magnesia, 10 to 20 parts of silicon carbide, 10 to 25 parts of coke, 5 to 15 parts of asphalt, 10 to 20 parts of clay, 5 to 15 parts of nitride, 3 to 10 parts of kyanite, 0 to 15 parts of quartz powder, 12 to 20 parts of carbon black oil, 2 to 8 parts of anthracene oil and 0.5 to 2 parts of plasticizer, wherein the nitride is one or a mixture of ferro silicon nitride, silicon nitride, aluminum nitride and titanium nitride, and the carbon black oil and the anthracene oil are premixed to form a composite environment-friendly binding agent for standby use; raw materials are weighed and added into a mixing mill to be dry-mixed; the binding agent is added, mixed and milled; the plasticizer is added and stirred; and the mixture is extruded and molded. The environment-friendly anhydrous stemming is safe to the human body and environment, high in performance, low in consumption, and good in slag erosion resistance and scouring resistance.

The invention relates to glass fiber reinforced halogen-free flame-retardant polybutylene terephthalate (PBT), which is characterized by being prepared from the following raw materials in part by mass: 40 to 50 parts of PBT, 10 to 20 parts of halogen-free flame retardant, 2 to 8 parts of acrylate copolymer, 1 to 5 parts of nano-scale polyethylene terephthalate (PET), 1 to 5 parts of antioxidant and 20 to 40 parts of glass fibers, wherein the halogen-free flame retardant is melamine salt. Products prepared from the glass fiber reinforced halogen-free flame-retardant PBT are low-smoke, environment-friendly, hard to break and easy to process and form.

Process for heating titanium-oblique rolling punch rod blank adopts horizontal step-by-step medium-frequency induction heating finance as tool. The heating furnace consists of automatic skip mechanism, core-watch temperature differential monitoring system and fast-extraction discharge mechanism. The process is carried out by hoisting titanium rod onto bedding rack by overhead traveling crane, arranging on movable bedding rack paralleled, lifting titanium-rod onto charge rack on slop by production beat, entering into horizontal step-by-step medium-frequency induction heating furnace successively, moving titanium-rod forwardly by step-by-step mode, raising temperature while homogeneous heating, discharging, entering into blow tank of oblique-rolling punch, nipping and punching to raw pipe. It's simple, safe and cheap and has no environmental pollution.

The invention discloses a carbon deposit detergent for a gasoline direct injection engine combustion chamber. The carbon deposit detergent is prepared from the following components in parts by weight:12 to 25 parts of 2-methyl-2,4-pentendiol, 15 to 25 parts of propanediol butyl ether, 12 to 25 parts of methylbenzene, 10 to 20 parts of xylene, 0.5 to 5 parts of preservative, 2 to 8 parts of N-methyl pyrrolidone, 4.5 to 12 parts of dispersing agent, 3 to 15 parts of organic alkali, 2 to 15 parts of polyether polyols, and 0.3 to 3 parts of lubricating agent. The carbon deposit detergent for thegasoline direct injection engine combustion chamber is good in cleaning effect, high in cleaning efficiency, harmless to a ternary catalytic converter, and capable of effectively cleaning the carbon deposit in the combustion chamber, optimizing the air inlet amount, improving the utilization efficiency of the fuel oil and improving the current situation of difficulty in cold starting.

The invention provides a method for manufacturing smokeless incombustible temperature-resistant tetrafluoroethylene electric wire, comprising the steps of uniformly and seamlessly winding tetrafluoroethylene colour raw material belt for winding and sintering on nickel plated copper stranded wire according to a certain winding angle, improving the apparent density of winding belt by a shaping technology, and finally sintering so as to obtain the smokeless incombustible temperature-resistant tetrafluoroethylene electric wire. The invention has the advantages that 1. the thickness is uniform, the surface is smooth, and the compactness is high; 2. the manufacturing process is simple and the operation is simple and convenient; 3. the manufacturing cost is reduced by 50% compared with the manufacturing method in a paste extrusion manner; and 4. the breakdown resistant voltage can be 6000-8000V, the used rated voltage is 600V, the temperature range for long term usage is -65 to 260 DEG C, the limited oxygen index is more than 95, and the electric wire is incombustible and resistant to strong acids, strong alkalis and aging.

The present invention relates to a geothermic electric heating static heat-stored heating heat quantity slowly-releasing structure, its construction process and application. Its structure comprises up-down laminated heat-storing layer and heat quantity slowly-releasing layer, the geothermic cable is embedded in the heat-storing layer formed from heat-storing material whose heat-conducting coefficient is 0.3-0.79w.m(-1).k(-1), said heat-storing layer is covered with the slowly-releasing layer formed from slowly-releasing material whose heat-conducting coefficient is 0.04-0.07 w.m(-1).k(-1), and the temp. sensor is embedded in the slowly-releasing layer, and is series-connected with geothermal cable loop. Its application includes the following steps: starting power supply to supply power to geothermic cable, and storing heat energy in heat-storing layer, then slowly-releasing the heat energy to heating space by means of slowly-releasing layer.