80results about How to "Prolong ignition time" patented technology

A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, such as after an engine cold start, the method operates an engine with a first group of cylinders having a first ignition timing, and a second group of cylinders having a second ignition timing more retarded than the first group. In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also can change to combusting all cylinders at substantially the same ignition timing under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

The invention discloses a front coal gasification grate-firing device and a combustion method thereof. By the aid of the front coal gasification grate-firing device and the combustion method thereof, the problems of emission of the high NOx content and the high SOx content of traditional chain layer burners are solved, and the boiler efficiency is improved. The front coal gasification grate-firing device comprises a coal bucket, a coal gasification chamber and a coke discharge pipe which are communicated sequentially, a gas pipe is arranged at the top of the coal gasification chamber, an injection nozzle is arranged inside the gas pipe, communicated with a secondary air pipeline through an injection air pipeline and parallel with the secondary air pipeline, an opening of the injection nozzle faces towards a hearth, the secondary air pipeline and the gas pipe are arranged in parallel in an up-and-down mode and communicated with the hearth, a bottom bellows is installed at the bottom of the coal gasification chamber, communicated with a gasification air pipeline and communicated with the coal gasification chamber through a fire grate I, the fire grate I is inclined towards the inlet direction of the coke discharge pipe, a coke breaking machine is installed at the position of an inlet of the coke discharge pipe, and an outlet of the coke discharge pipe is located above a fire grate II at the bottom of the hearth.

The invention discloses a high-flame-retardancy paint which is prepared from a water-based acrylate emulsion, a water-based polyurethane resin, aluminasol, an epoxy resin, polydimethylsiloxane, zinc oxide, hollow glass microspheres, nano zirconium oxide, montmorillonite, nano silicon dioxide, a film forming aid, a defoaming agent, a leveling agent, a wetting agent, a flame retardant and water. The flame retardant is formed by mixing boron oxide, dimethyl methyl phosphonate, phosphorus pentoxide, tri(2-chloropropyl) phosphate, guanylurea phosphate, ammonium polyphosphate, pentaerythritol, melamine and hexamethyl disiloxane. The high-flame-retardancy paint has the advantages of favorable water resistance, favorable wear resistance, excellent flame retardancy and long service life.

The invention discloses flame-retardant wallpaper as an indoor wall decoration material and a preparation method thereof. The preparation method for the flame-retardant wallpaper includes the following steps: after being immersed in a flame retardant solvent, a decorative veneer and a wallpaper substrate (backing paper) are ultrasonically immersed, so that a flame-retardant decorative veneer and a flame-retardant substrate are obtained; the flame-retardant decorative veneer is attached onto the surface of the flame-retardant substrate. The flame-retardant property of the wallpaper is good, the potential fire risk is low when the material burns, and the flame-retarding effect is remarkable; the smoke suppression effect is obvious, the amount of CO released from smoke is obviously reduced, toxic CO gas can be partially turned into non-toxic gas, and the wallpaper has a good effect of suppressing CO released at fire scenes. Moreover, since the adopted materials are natural materials, the wallpaper is safe to use.

The invention discloses a firework with an integral module explosive filing structure in an open mode and a preparation method thereof. The explosive filling structure disclosed by the invention comprises a shell, a delay fuse, bright beads and an open explosive module, wherein the shell, the delay fuse and the bright beads are made of traditional materials. The preparation method of the fireworkwith the integral module explosive filling structure in an open mode comprises the following steps: preparing a slurry containing an organic adhesive, an ignition performance reinforcing agent and granular micro-pore firework explosive granules; then, filling the bright beads and the slurry into the ball shell of the firework according to the needed structure, thus forming an integral module structure; and finishing the preparation of the firework according to a conventional method. By adopting the integral module explosive filling structure and the explosive filling method, the gap between the open explosive module and the bright beads is basically eliminated; the ignition rate of the bright beads can be improved; the mechanical friction action among the granules in the explosive fillingcourse and storage and transportation course of the granules is avoided; and the safety of the preparation course and storage and transportation course of fireworks is improved.

The invention relates to a gas stove ignition device, comprising an igniter, a gas source electromagnetic valve coil and a thermocouple; the ignition device is characterized in that: the ignition device also comprises a delay driving circuit, the positive input end of the delay driving circuit power is connected with the positive of a power supply, the negative input end of the delay driving circuit power is connected with the negative of the power supply; the trigger end of the delay driving circuit is connected with the output end of the igniter, in addition, the output end of the delay driving circuit is connected with the gas source electromagnetic valve coil which is connected with the thermocouple in serial, the delay driving circuit can always keep the circuit conducting before the thermocouple is up to the electromotive force capable of sucking the gas source electromagnetic valve. Compared with the prior art, the ignition device sets up the delay driving circuit in the gas appliance ignition device, and the delay driving circuit can maintain the open time of the electromagnetic valve, thus users can successfully ignite without the need of pressing and turning on an ignition knob and then waiting a while, and the use is more convenient.

The invention relates to veneering decorative paper having a flame-retardant effect and a flame-retardant veneering artificial board using the same. The veneer decorative paper is prepared by the following method: 1) taking needle leaf wood pulp and broad leaf wood pulp, respectively beating, mixing and defibering, adding a titanium dioxide dispersion liquid, a retention aid, a wet strength agentand modified starch paste, to prepare original paper; 2) carrying out double-side coating on the obtained original paper with silica sol to obtain modified paper A; (3) carrying out impregnation treatment on the modified paper A with a borax solution to obtain modified paper B; and 4) carrying out double-side coating and gluing on the modified paper B with a soybean protein glue liquid with the gluing amount of 12-15 g/m<2>, and then carrying out press polishing with a press polishing machine. The obtained veneering decorative paper makes a flame-retardant agent added to the paper by using silica sol coating and borax solution impregnating, so the limit oxygen index of the decorative paper and the ignition time of the veneering artificial board are improved, and a good effect on preventingthe expansion and spreading of fire is achieved. The decorative paper does not contain formaldehyde, can greatly reduce the formaldehyde release amount of the veneering artificial board, and is suitable for promotion and use.

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 the technical field of curtain wall engineering, and discloses a fireproof glass curtain wall which is of a double-layer glass structure, wherein an air contact surface is coated by a fireproof thermal-insulating coating; glass gaps are filled with a thermal-insulating material; the fireproof thermal-insulating coating is prepared from the following components in parts by weight: 80-90 parts of a polychloroprene rubber emulsion, 40-50 parts of ethyl silicate, 30-40 parts of silica sol, 25-30 parts of pentaerythritol, 20-25 parts of aluminum hydroxide, 15-20 parts of an asbestos fiber, 10-15 parts of titanium dioxide, 5-10 parts of antimonous oxide and 1-2 parts of nano zinc oxide; the thermal-insulating material is a micro-pore material prepared from phosphate, germinate and silicate via mixing. The high temperature resistance and the thermal impact resistance of the fireproof glass curtain wall are improved, the wall can endure a temperature difference up to 600 DEG C without cracking in case of fire hazard, and thus the fire hazard damage can be minimized.

The invention relates to a composite halogen-free flame-retardant smoke suppression agent of a PVC wood-plastic composite material and a preparation method and application of the agent, which relate to the composite halogen-free flame-retardant smoke suppression agent and the preparation method and application of the agent, and aim at solving the problems that the PVC wood-plastic composite material is combustible, a great amount of smoke is produced when the composite material is combusted, the addition amount of the existing PVC wood-plastic composite material flame-retardant smoke suppression agent is large, the flame-retardant effect and the smoke suppression effect are poor, and the existing PVC wood-plastic composite material flame-retardant smoke suppression agent is harmful to the health of people. The composite halogen-free flame-retardant smoke suppression agent consists of ammonium polyphosphate, melamine, pentaerythritol and copper oxide. The preparation method comprises the following steps: I, preparing an expansion-type flame-retardant agent; II, preparing the composite halogen-free flame-retardant smoke suppression agent. The application method comprises the following steps: I, weighing raw materials; II, preparing high-temperature materials; III, preparing a premix; IV, extruding and forming. The flame-retardant smoke suppression agent solves the problems that the wood-plastic composite material is combustible, a great amount of smoke is produced when the composite material is combusted, the addition amount of the existing flame-retardant smoke suppression agent is large, the effect is poor, and the existing flame-retardant smoke suppression agent is harmful to the health of people. The composite halogen-free flame-retardant smoke suppression agent is used for resisting the combustion and suppressing the smoke of the PVC wood-plastic composite material.

The invention discloses an environment-friendly flame-retardant case for a computer and a preparation method thereof. The case is prepared from the following raw materials in parts by weight: 10 to 15parts of carbon fiber, 20 to 40 parts of EVA resin, 6 to 10 parts of aluminum hydroxide, 6 to 10 parts of magnesium hydrate, 3 to 5 parts of nylon particles, 1 to 3 parts of zinc hydroxystannate, 3 to 5 parts of ammonium phosphate, 6 to 10 parts of montmorillonoid and 1 to 2 parts of plasticizers. The environment-friendly flame-retardant case for the computer is strictly controlled; the production process parameters and the proportion of all ingredients of the computer case are strictly controlled; the nylon particles and ammonium phosphate particles are added into the raw materials; the heatrelease rate is reduced, so that the original ignition time is prolonged; the zinc hydroxystannate is added into the machine materials, so that the flame retardant and smoke suppression performance of the material can be obviously improved; the montmorillonoid material is added, so that the tensile strength and the flame retardant performance of the material are improved; the environment-friendlyflame-retardant case is suitable for being widely popularized.

A motorcycle includes a supercharger to pressurize an intake air and supplying it to a combustion engine and an air intake chamber disposed downstream of the supercharger. The air intake chamber is made of a metallic material and has a capacity of an interior space thereof which is within the range of three to eight times the displacement of the combustion engine. The dimension from an upstream end portion on an inlet side of the interior space of the air intake chamber to a downstream end portion on an outlet side of the interior space of such air intake chamber is chosen to be three or more times the inner diameter of an outlet.

The invention relates to the field of building materials, in particular to a smoke-suppressing flame-retardant wood composite material and a preparation method thereof. The smoke-suppressing flame-retardant wood composite material is prepared from modified wood flour, a phenolic resin/ammonium polyphosphate/molybdenum compound composite material, polyethylene, maleic anhydride grafted polyethylene, nanocellulose, halloysite nanotubes, dicumyl peroxide and an antioxidant; The smoke-suppressing flame-retardant wood composite material is good in mechanical properties, excellent in fireproof and flame-retardant performance, long in ignition time, not prone to combustion and small in heat and smoke production during combustion, can be widely applied to the fields of home building materials and decoration and has excellent market application prospects.

The invention discloses a nylon composite for a bearing pedestal, which is characterized in that the nylon composite comprises the following components in percentage by weight: 80 to 93.5 percent of nylon base material, 4 to 9 percent of decabromodiphenyl ether, 1 to 4 percent of antimonous oxide, 0.5 to 2 percent of zinc borate and 1 to 5 percent of carbon black. The invention has high strength and high toughness as well as waterproof performance and flame retardant property.

The invention discloses a preparation method of corrugated paper with a flame-retardant effect, and relates to the technical field of corrugated boards. The corrugated paper is obtained by compoundingthree surface paper plates and two corrugated plates. The corrugated paper prepared by the method has good edge pressure strength; and a certain amount of melamine cyanurate is added, so that the thermal stability and charring performance of the flame-retardant corrugated paper at high temperature can be further improved. The melamine cyanurate and the magnesium hydroxide have a synergistic effect, so that a compact expanded carbon layer can be formed on the surface, and the effects of heat insulation and oxygen insulation are effectively exerted, thereby enhancing the flame retardancy of thecorrugated paper.

The invention discloses a waterproof coating for the surface of wooden furniture. The waterproof coating is prepared from the following raw materials: in parts by weight, 50-60 parts of a modified styrene-acrylic emulsion, 4-6 parts of inorganic filler, 0.8-1 part of a flame retardant, 1-2 parts of a defoamer, 0.5-0.6 part of a leveling agent, 1-1.5 parts of a wetting agent and 10-14 parts of deionized water. The invention also discloses a preparation method of the waterproof coating. The modified styrene-acrylic emulsion is adopted as a film-forming material for the coating, a styrene-acrylicemulsion is modified by polysiloxane, and therefore the obtained film-forming substrate not only has excellent waterproof performance, but also has heat resistance and bacteriostasis; through addition of the flame retardant which is a compound to the coating, the flame retardant properties can be developed from gas phase dilution, catalytic carbonization and different aspects, so that the coatinghas a good effect of flame retardancy; and then the waterproof coating with flame retardancy and bacteriostasis is prepared through auxiliary preparation of other additives, and is suitable for the wooden furniture, and the service life of the wooden furniture is improved.