124results about How to "Raise the ignition temperature" patented technology

The present invention discloses a low-cost high-strength anti-fatigue nonflammable wrought magnesium alloy and a preparation method thereof. The magnesium alloy comprises the following chemical components in percentage by mass: 2.0-6.0% of Al, 1.5-4.0% of Ca, 0.2-0.8% of Mn, 0.1-0.8% of rare earth (RE), and the balance Mg and trace inevitable impurities, wherein the RE is one or more of cheap rare earth elements of La, Pr, Ce and Nd, and the content of the cheap rare earth is not zero simultaneously. The magnesium alloy provided by the present invention will meet the urgent need of users for high-performance materials, and the application of the magnesium alloy to magnesium alloy products, for example, load-bearing structural parts of aerospace, vehicles, rail trains and so on, structural parts of medical treatment, welfare and outdoor sport equipment, and parts (e.g., compressor scroll pans) having certain requirements for heat resistance and fatigue performance, is expanded.

The invention discloses high glowing filament ignition temperature inflaming retarding reinforced poly(butylene terephthalate) which comprises the following raw materials in parts by weight: 25-68 parts of synergistic agent, 1-10 parts of toughening agent, 0-1 part of main antioxygen, 0-1 part of auxiliary antioxygen and 10-40 parts of glass fiber. The inflaming retarding reinforced poly(butylene terephthalate) has high glowing filament ignition temperature, higher mechanical property and lower material cost; and a preparation method is simple without using special equipment and is suitable for industrialized production.

The invention discloses a flame-retardant glass fiber reinforced PBT (polybutylene terephthalate) with high glow wires and a high CTI (comparative tracking index) value and a method for preparing the flame-retardant glass fiber reinforced PBT. The flame-retardant glass fiber reinforced PBT comprises, by weight, 38-45 parts of PBT, 5-8 parts of PET (polyethylene terephthalate), 15-18 parts of flame retardants A, 0.5-1.5 parts of flame retardants B, 5-8 parts of flame retardants C, 2-4 parts of toughening agents, 0.2-0.4 part of antioxidants, 0.3-0.6 part of lubricants and 25-30 parts of glass fibers. The flame-retardant glass fiber reinforced PBT and the method have the advantages that the glow wire ignition temperature (GWIT) of the flame-retardant glass fiber reinforced PBT can be increased and reaches 850 DEG C, and a comparative tracking index (CTI) of the flame-retardant glass fiber reinforced PBT can reach 400 V; the mechanical performance and the machining performance of the flame-retardant glass fiber reinforced PBT can be prevented from being damaged or only is damaged at low level.

The present invention involves an exhaust gas catalyst and method of manufacturing same. The invention provides for a cost-effective material which lowers the cold-start emissions from the exhaust of vehicles. The invention is a passive system which accelerates the light-off temperature of catalyst in a cost-effective fashion. The invention includes a method of manufacturing an exhaust gas catalyst capable of lowering cold-start emissions including the steps of providing an oxide mixture having praseodymium and cerium, doping about 0-10% weight zirconium and about 0-10% weight yttrium to the oxide mixture, adding about 0-2% weight metal including palladium, platinum, or rhodium to the oxide mixture, mixing gamma aluminum to the oxide mixture for washcoating and washcoating the oxide mixture onto a monolithic substrate.

The invention relates to a halogen-free flame-retardant polycarbonate/styrene base resin composition and a preparation method thereof, and the composition comprises the following components in parts by weight: 650-900 parts of polycarbonate, 0.1-250 parts of styrene base resin, 20-100 parts of toughening compatibilizer, 10-100 parts of metal inorganic compound, 5-50 parts of organic silicon, 70-150 parts of complex flame retardant, 1-10 parts of antioxidant A, 1-15 parts of antioxidant B and 0-20 parts of other auxiliary materials. The preparation method comprises the following steps: mixing raw materials in a high-speed mixing machine, then introducing into a twin-screw extruder, adding the complex flame retardant in the lateral line feeding way, performing extrusion and granulation and finally getting the product. Compared with the prior art, the halogen-free flame-retardant polycarbonate/styrene base resin composition has the advantages of high comparative tracking index (CTI), high glow-wire ignition temperature (GWIT), halogen-free flame retardance, environment friendliness and the like.

Provided are a magnesium-based alloy and a manufacturing method thereof. In the method, a magnesium alloy is melted into liquid phase, and an alkaline earth metal oxide is added into a molten magnesium alloy. The alkaline earth metal oxide is exhausted through surface reduction reaction between the melt and the alkaline earth metal oxide. Alkaline earth metal produced by the exhaustion reacts with Mg and/or other alloying elements in the magnesium alloy so that an intermetallic compound is formed. The magnesium prepared by the method is excellent in fluidity and hot-tearing resistance. To this end, the alkaline earth metal oxide added is CaO, and the added amount of CaO is 1.4 to 1.7 times the target weight of Ca to be contained in the final Mg alloy.

A lighter, including: a casing, a turnable cap, a circuit board, a transformer, a power supply, switches, circuits, a power socket, an ignition chamber, and a pair of discharging needles. The circuit board is arranged inside the casing, and the discharging needles are disposed on the top of the ignition chamber. The circuits are disposed on the circuit board and include an oscillating circuit, a DC boost converter circuit, a lighting circuit, and a counterfeit money detector circuit. An ignition switch and a toggle switch are disposed on one side of the casing. The bottom of the casing is provided with a lighting lamp and a counterfeit money detector lamp.

The invention discloses a halogen-free synergistic flame-retardant PBT material with a high glow wire. The PBT material comprises, by weight, 30-60 parts of PBT resin, 10-30 parts of glass fibers, 10-25 parts of a phosphorus-based flame retardant, 2-10 parts of a nitrogen-based flame retardant, 0.2-1 part of a silicon-based flame retardant, 0.5-5 parts of a toughener and 0.2-0.6 part of an antioxidant. The invention also discloses a preparation method of the halogen-free synergistic flame-retardant PBT material. The synergistic effects of the flame retardants are fully used, so the flame retardant performance of prepared PBT material reaches UL94 V0 (1.6 mm), the glow-wire ignition temperature reaches 800 DEG C, and the PBT material has excellent physical and mechanical properties, and issuitable for being applied to electrical and electronic fields.

The invention discloses an igniting device and an ignition method for sintering and belongs to the field of iron smelting of a blast furnace. The igniting device disclosed by the invention comprises an ignition furnace, a gas charging pipe and a hot air charging pipe; a row of burner nozzles are arranged on a part, at an ignition section of the ignition furnace, of the furnace top; the middle burner nozzles are arranged linearly; the burner nozzles close to the two sides of a sintering machine trolley are arranged in an arc shape; each burner nozzle communicates with the gas charging pipe and the hot air charging pipe respectively; the parts, at the front end and the rear end of the ignition section, of the furnace top are each provided with an isolation chamber; each isolation chamber communicates with the hot air charging pipe; an air box is arranged at the bottom of the ignition furnace, wherein a retarder is arranged inside the air tank under the burner nozzles. The igniting device disclosed by the invention has the advantages of optimizing distribution of an igniting fuel on an overall sintering material surface, balancing the ignition quality of sintering materials at all positions of a sintering machine, improving the quality of sintered ore products, also enhancing the ignition effect, reducing consumption of the igniting fuel and satisfying the production process requirements on energy conservation and environmental protection.

The invention discloses a halogen-free flame-retardant glass fiber-reinforced PA6 composite material with a high-ignition-temperature glow wire and a high CTI value and a preparation method of the PA6composite material. The PA6 composite material is composed of the following raw materials of: in parts by mass, 40-55 parts of PA6 resin, 0-5 parts of a toughening agent, 10-18 parts of melamine cyanurate flame retardant, 9-13 parts of aluminum hypophosphite flame retardant, 1-4 parts of melamine polyphosphate flame retardant, 20-35 parts of glass fiber, 0.3-0.5 part of an antioxidant and 0.3-1 part of a lubricant. Meanwhile, the invention discloses the preparation method of the halogen-free flame-retardant glass fiber-reinforced PA6 composite material with the high-ignition-temperature glowwire and the high CTI value. The halogen-free flame-retardant glass fiber-reinforced PA6 composite material with the high-ignition-temperature glow wire and the high CTI value has excellent flame retardant performance, high ignition temperature of the glow wire and high anti-tracking performance, and meanwhile the prepared composite material has excellent comprehensive mechanical properties and asimple preparation process, and is worthy of popularization and application.

The invention discloses a quasi-crystalline reinforced high-zinc magnesium alloy and making method, which comprises the following parts: 2.50-5.00% Al, 6.00-20.00% Zn, 40-1.00% Y0., 0.40-1.20% Mn, 0.003-0.005% Ni, 0.03-0.05% Fe, 0.03-0.05% Cu and Mg. the cast shaped tissue is alpha-Mg+Tau (Mg32(Al, Zn)49)+phi (Al2Mg5Zn2)+, which is displayed in the alpha-Mg or tao-phase and phi-phase rim constituted by MgxZnuYtMnw magnesium-based four-phased composite tissues of quasi-crystalline with relative bulk at 1.50-4.00% in the high-zinc magnesium alloy material.

The invention relates to the field of modified engineering plastics, and discloses a high-performance reinforced flame-retardant PBT material and a preparation method thereof. The high-performance reinforced flame-retardant PBT material of the invention comprises (by weight): 50 to 65 parts of PBT resin, 5 to 15 parts of PET resin, 10 to 20 parts of a flame retardant, 1 to 5 parts of a flame retardant synergist, 20 to 30 parts of a filler, 1 to 2 parts of a toughening agent, 0.1 to 0.8 part of an antioxidant, 0.9 to 1.2 parts of a lubricant, 0.1 to 0.3 part of a nucleating agent, and 0.5 to 1.5 parts of a plasticizer. The high-performance reinforced flame-retardant PBT material achieves a high glow-wire initiation temperature and a high tracking index through the combination of the flame retardant and the synergist, and combustion performance and mechanical property of the PBT material are improved by using low-cost talcum powder as the nucleating agent.

The invention discloses an ignition system for a micron metal powder and liquid water mixture. The ignition system comprises a striking unit provided with heat by an oxidation reduction reaction, an ignition unit used for triggering the striking unit to burn, and a burning unit struck by the striking unit; the ignition unit is a control circuit including an electric heating wire; the burning unitis a gel system formed in the mode that micron metal powder is dispersed into water through gel, wherein an ignition reaction between the micron metal powder and the water is difficult; and the ignition unit comprises an ignition powder layer, a magnesium powder layer and an ignition gel layer, wherein the ignition powder layer is triggered by the electric heating wire and provided with the heat by the oxidation reduction reaction to uniformly heat the burning unit, the magnesium powder layer is used for blocking direct contact between the ignition powder layer and the burning unit and transmits heat generated by the ignition powder layer to the burning unit, and the ignition gel layer used for stably transmitting the heat of the magnesium powder layer to the burning unit so as to fully ignite the burning unit. The ignition system can achieve layered step-by-step ignition, the ignition temperature is high, and metal powder with any micron size and the water can be ignited stably.

Methods and systems are provided for reducing engine emissions using a branched exhaust system. In one example, a branched exhaust system may include a plurality of sub-branches each housing a distinct exhaust component, and an order of exhaust flow through each of the exhaust components may be adjusted based on engine operating conditions and temperature demand of the distinct components.

The invention discloses an environment-friendly safe gunpowder oxidizer of fireworks and firecrackers, and belongs to the chemical field. The environment-friendly safe gunpowder oxidizer is mixed and made by potassium hyperchlorate, strontium nitrate, barium nitrate and flame retardant material. The gunpowder oxidizer is characterized in simple prescription, good safety, no potassium chlorate, no sulfur, etc., and is widely used in the industries such as firecrackers, fireworks, etc., and is an ideal safe gunpowder oxidizer.

The invention belongs to the technical field of fiberboard materials, particularly relates to a high-density fiberboard with high fire resistance and a preparation method of the high-density fiberboard. The problems that in the prior art, a fiberboard can release harmful substances such as formaldehyde, the fiberboard belongs to an inflammable material are solved, and the high-density fiberboard comprises the following raw materials of, in parts by weight, 30-50 parts of wood chips, 30-50 parts of straws, 10-20 parts of light silicon dioxide, 3-5 parts of an adhesive, 3-5 parts of a flame retardant, 1-3 parts of magnesium stearate, 2-4 parts of hexamethyldisiloxane and 2-5 parts of p-hydroxybenzenesulfonic acid. According to the high-density fiberboard with the high fire resistance and the preparation method of the high-density fiberboard, the high-density fiberboard is scientific in formula and rigorous in proportion, the obtained high-density fiberboard has excellent fire-resistant and flame-retardant performance, waterproof and moistureproof performance and physical and mechanical performance, the preparation method of the high-density fiberboard is simple, mild in preparation condition and easy for industrial production, and can be widely applied.

The invention relates to an environmentally-friendly alternative fuel composition and a method for manufacturing the same. The composition comprises: 40 to 60 weight portions of a mixture of alkanes, alkenes and naphthenic hydrocarbons, 15 to 20 weight portions of a mixture of aromatic hydrocarbons, 5 to 10 weight portions of a mixture of C5 hydrocarbons, 7 to 12 weight portions of a mixture of C9 hydrocarbons, 3 to 15 weight portions of toluene, 4 to 12 weight portions of methyl tert-butyl ether (MTBE) and 4 to 20 weight portions of C1 to C4 alcohol compounds. Compared with common gasoline, the environmentally-friendly alternative fuel composition can effectively reduce harmful gases such as carbon monoxide, organic hydrocarbons and nitrogen oxides in exhausted tail gases and consequently reduce air pollution greatly due to more sufficient burning, and well suppress detonation and improve the power of a motor, namely the thermal efficiency of the motor, due to a high octane number. In addition, due to a higher thermal value and higher combustion efficiency, the environmentally-friendly alternative fuel composition achieves a good energy-saving effect.