125results about How to "Raise the ignition temperature" patented technology

The invention discloses a flame-retardant enhanced PBT material and a preparation method thereof. The flame-retardant enhanced PBT material comprises the following components in percentage by weight: 45 to 60 percent of PBT resin, 3 to 10 percent of brominated flame retardant, 1 to 10 percent of phosphorus-nitrogen flame retardant, 1 to 5 percent of inorganic flame retardant, 2 to 5 percent of toughening agent, 20 to 35 percent of glass fiber, 0.3 to 1 percent of lubricating agent, and 0.1 to 0.6 percent of antioxidant. The flame-retardant enhanced PBT material has high ignition temperature of glowing filament, high comparative tracking index, and better mechanical property, and can be widely applied to the field of unattended electronic and electric products.

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 discloses an organic-inorganic composite nanometer heat-insulating fire-retardant coating and a preparation method thereof. The organic-inorganic composite nanometer heat-insulating fire-retardant coating is prepared by mixing organic film-forming substance acrylic ester emulsions or styrene-acrylate emulsions, epoxide resin, organic intumescent fire-retardant system pentaerythritol, melamine and ammonium polyphosphate with inorganic fire retardant nanometer aluminum hydroxide, nanometer magnesium hydroxide, filler nanometer titanium dioxide, ceramic hollow microspheres, glass hollow microspheres and a part of auxiliary agents. The organic-inorganic composite nanometer heat-insulating fire-retardant coating disclosed by the invention not only has excellent facing property and fire-retardant property, but also achieves reflection effect on solar radiation and certain heat-insulating and heat-preserving property on a substrate, also has good adhesivity, mechanical property and hydrophobic effect, can be formed through spray coating or brush coating before being solidified, and is a novel water-based multifunctional fire-retardant material. The organic-inorganic composite nanometer heat-insulating fire-retardant coating disclosed by the invention can not only be used as a general building wall body fire-retardant coating, but also be suitable for the fire prevention of building and ornament materials, heat-insulating materials, steel structure supports, beam columns, metal roofs and the like.

The invention relates to an AE series heat resistant casting magnesium alloy containing cerium and lanthanum, which comprises and has the weight percentage of each element of: Al:3%-5%, Ce:0.4%-2.6%, La:0.4%-2.6%, Mn:0.2%-0.6%, the rest being magnesium. The lanthanum cerium mischmetal used is produced by separating the Nd, Pr which is more valuable and selling from ordinary cerium rich mischmetal which leaves the cheap and abundant cerium lanthanum mischmetal. The invention has better mechanical performance in both normal and high temperature than AE44 and AZ91alloy, and the minimum creep rate under 200 DEG C, 70MPa is 1.82 multiplied by10-9s-1, 100 hour creeping elongation rate is 0.17%, all being better than an AE44 alloy.

The invention discloses a flame-retardant reinforced high temperature nylon composite material. The composite material is prepared by blending the following raw materials, by weight, 25-65 parts of PPA, 3-15 parts of PA66, 15-50 parts of glass fiber, 15-22 parts of a bromine family flame retardant, 4-10 parts of a metal oxide flame retardant, 0.4-1 part of an antioxidant, 0.1-1 part of a lubricant and 0.1-1 part of a coupling agent. The invention also discloses a preparation method of the composite material. The method comprises the following steps: uniformly mixing the above raw materials except the glass fiber in a mixer, pouring the obtained mixture into a storage hopper under a feeding speed of 16-20hz, adding the mixture to an extruder, carrying out shearing blending, adding the glass fiber, carrying out melt extrusion, and granulating to obtain the composite material, wherein the extrusion speed is 320-400rpm, and the processing temperature is 280-310DEG C. The composite material has the advantages of high temperature resistance, high strength, good fluidity, good processing performance, good flame retardation property, and hydrolysis resistance.

The invention discloses an ethylene-propylene-diene monomer rubber waterproof roll. The ethylene-propylene-diene monomer rubber waterproof roll is prepared from the following raw materials in parts by weight: ethylene-propylene-diene monomer rubber, DOP (Dioctyl-Phthalate) thermal welding agent, carbon black, light calcium carbonate, stearic acid, zinc oxide, rubber accelerator, sulfur, processing oil, fire-retardant plasticizer, chlorinated polyethylene (CPE), white carbon black and rubber accelerator tetramethyl thiuram disulfide (TMTD). A production method of the ethylene-propylene-diene monomer rubber waterproof roll comprises the steps of banburying, filtering, compounding, thermal cracking, calendering, rolling, vulcanization and packaging. The ethylene-propylene-diene monomer rubber waterproof roll produced by the method has good ageing resistance, small possibility of cracking and good waterproof effect and has an inflaming retarding function, the initiation temperature exceeds 300 DEG C, and the ethylene-propylene-diene monomer rubber waterproof roll has no water-permeating phenomenon through permeable experiments.

The invention relates to the technical field of macromolecular composite materials, and discloses a red phosphorus flame retardant enhanced PA66 (nylon resin) and POK (polyketone) alloy material and a preparation method thereof. The red phosphorus flame retardant enhanced PA66 and POK alloy material is prepared from nylon resin, polyketone resin, red phosphorus master batch, a synergist, an antioxidant, a lubricating agent and glass fibers. The material is mainly prepared from the following components in percentage by weight: 5 to 50 percent of PA66, 15 to 25 percent of POK, 10 to 25 percent of the red phosphorus master batch, 20 to 35 percent of the glass fibers, 5 to 10 percent of the synergist, 0.2 to 0.5 percent of the antioxidant and 0.1 to 0.5 percent of the lubricating agent. The material is excellent in electrical property; the ignition temperature of a combustible heat wire of the material can be up to 850 DEG C; the material has high CTI value which is 600 V. The material is stable in processing, has excellent mechanical property and can be widely applied to the electrical and electronic industry.

The invention relates to an oxygen-enriched combustion technical method for improving heating power of a cement kiln and a device thereof. During the process of cement clinker calcination, the invention is characterized in that: 1) a pure oxygen (over 90 percent) feeding device is added at a coal dust combustion zone of the cement kiln so as to lead the combustion zone to form a local thermonuclear area, and with the gradual diffusion of high temperature at the thermonuclear area, the heating power of the whole cement kiln is further improved and stably controlled; and 2) an oxygen feeding device is added at a combustion area of the cement kiln so as to improve and stably control the oxygen content in combustion air within the range of 21.8-33 percent at the combustion area. In a coal supplying system and an air supplying system of the cement kiln, an oxygen-enriched combustion system is formed by arranging at least one high temperature resistance oxygen jet, a pipeline for transmitting oxygen, an oxygen generation device, an oxygen supply-quantity regulating device, a DCS control device and the like inside each independent combustion area of the cement kiln. The invention has the advantages of improving combustion efficiency of faulty coal and the heating power of the cement kiln, and stabilizing thermal regulation of the kiln so as to enhance the quality of the cement and prolong the service life of various heating equipment of the cement kiln.

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 discloses a polyamide composition with high glow-wire ignition temperature, and a preparation method and application thereof. The composition comprises the following components by weight: (a) polyamide; (b) a phosphorus flame retardant; (c) a flame retardant synergistic agent; and (d) a flame retardant assistant of borate and / or polyformaldehyde. The invention also provides a preparation method and application of the polyamide composition. The polyamide composition provided by the invention has good flame retardant performance, good mechanical performance and high glow-wire ignition temperature.

The invention relates to a catalytically coated particle filter which comprises two catalysts arranged one after the other. The first catalyst is located in the gas inlet zone of the filter and contains a palladium / platinum catalyst. The second catalyst is located behind it and preferably contains only platinum as the catalytically active component. The combination of these two catalysts imparts good resistance to aging and sulfur poisoning to the coated filter.

The invention discloses a halogen-free flame retardant polyamide material which is mainly prepared from the following components in parts by weight: 40-72 parts of polyamide, 8-15 parts of a halogen-free flame retardant, 3-9 parts of a flame retardant synergist, 0.5-2 parts of a processing aid and 0-40 parts of a reinforcing modifier, wherein the halogen-free flame retardant is hypophosphite and the flame retardant synergist is silicon stannate with the silicon content being 30-60%. By adding the flame retardant synergist silicon stannate to reduce the use level of the halogen-free flame retardant hypophosphite, the flame retardant performance and the mechanical property are more excellent than those of a flame retardant material without adding silicon stannate, so that the cost is lowered. For the flame retardant material without adding silicon stannate, in spite of high content of the halogen-free flame retardant hypophosphite, the GWIT (Glow Wire Ignition Temperature) still cannot reach 960 DEG C. By adding silicon stannate, the GWIT of the material is greatly enhanced and substantially reaches 960 DEG C.

The invention discloses anenhanced flame-retardant nylon composition with a high glow wire initiation temperature. The enhanced flame-retardant nylon composition is prepared from the following components in parts by mass: 35 to 53 parts of polyamide 66 resin, 15 to 25 parts of a composite flame retardant, 5 to 10 parts of a glow wire initiation temperature improvement agent, 25 to 30 parts of glass fibers, 0.2 to 1 part of an antioxidant and 0.3 to 1 part of a moistening agent. The enhanced flame-retardant nylon composition belongs to the technical field of high molecule materials. By adoptingthe enhanced flame-retardant nylon composition, the glow wire initiation temperature (GWIT) can be improved remarkably, and meanwhile superior temperature resistance, machining performance and coloring performance of the bromine-antimony flame retardant nylon composition are kept.