312results about How to "Reduce heat release rate" patented technology

The invention relates to a high-performance halogen-free flame retardant ABS modified resin and a preparation method thereof. The resin comprises the following components with the content (in parts by weight): 100 ABS resin, 4-30 polyamide, 5-25 phosphate fire retardant, 0.1-0.5 anti-drippage agent, 5-10 toughening agent, 1-5 nano filler, 1-5 compatilizer, 0.2-1 antioxidant, 0.1-0.5 light stabilizer and 1-5 processing agent. Compared with the prior art, the invention has reasonable technique, and overcomes the defects of poor flame retardant property and low impact strength of the existing halogen-free flame retardant ABS; and the invention adopts a novel high-efficiency halogen-free flame retardant compounding synergism technology, a novel polyamide coal-forming agent, the high-efficiency synergism between organic and inorganic fire retardants, and the master batch method processing technique, thus endowing the resin with high fire resistance on the basis of improving the original good performances (especially the impact performance) of the ABS resin, and having wide application prospect.

The invention relates to a preparation method of ceramizing fire-resistant silicon rubber. The rubber comprises the following components in parts by weight: 100 parts of methyl vinyl silicon rubber, 20-50 parts of white carbon black, 2-10 parts of hydroxyl silicone oil, 1-5 parts of a coupling agent, 25-100 parts of ceramizing powder, 2-5 parts of a heat stabilizer, 10-40 parts of a fire retardant, and 1-2 parts of a vulcanizer. The preparation method includes the following steps: adding the methyl vinyl silicon rubber in a kneading machine; then adding the white carbon black and the hydroxyl silicone oil; mixing for 30 minutes at the temperature of 80 DEG C; then adding the coupling agent, the ceramizing powder, the heat stabilizer and the fire retardant; mixing for 1-1.5 hours; raising the temperature to be 100 DEG C and keeping high vacuum for 30 minutes; and after cooling to room temperature, adding the vulcanizer on an open mixing machine for mixing to obtain the ceramizing fire-resistant silicon rubber. The rubber has good mechanical property and electrical property at normal temperature, does not contain halogen, is smokeless and non-toxic during combustion, can be extinguished quickly and forms a ceramizing shell to guarantee integrity of the inside.

The invention discloses a high-strength environment-friendly flame-retarding fiberboard which comprises the following raw materials of plant fibers, flame retardants, adhesives and waterproofing agents, wherein the weight ratio of the plant fibers to the flame retardants to the adhesives to the waterproofing agents is 100:(3-30):(3-30):(0.1-4). The invention also discloses a manufacturing method of the high-strength environment-friendly flame-retarding fiberboard. Not only are the mechanical properties of the flame-retarding fiberboard obviously improved, but also the combustion property can conform to the regulations of GB8624 Class B or Class C, and the formaldehyde emission, the smoke volume produced and the smoke toxicity are also reduced. Thus, the high-strength environment-friendly flame-retarding fiberboard has good quality and low price, can be widely applied to the fields of building furnishings, flame-retarding furniture production, flame-retarding floor production, wooden fireproof door production, ship and vehicle furnishings and the like, and has good economical and social benefits.

The invention discloses a non-halogen flameproof cable jacket material formula without harming environment, which is characterized by the following: adopting ethylene-octaolefin copolymer, low-density polyethylene, ethylene-vinyl acetate copolymer as basic resin; making magnesium hydroxide as flameproof agent; using bulking graphite and organic montmorillonite as flame-proof assisting agent; adding lubricant and anti-oxidant to form the formula of cable jacket; improving extending strength to 10-14Mpa and fracture extending rate at 150-350%.

The invention discloses a flame-retardant anti-dripping resin compound, consisting of 100 weight portions of thermoplastic resin, 0.01-5 weight portions of modified polytetrafluoroethylene anti-dripping agents and 20 to 40 weight portions of environment-friendly flame retardant containing phosphorus and/or nitrogen. The resin compound has strong anti-dripping effect and heat resisting performance, is level and smooth in exterior appearance, and can endow polyester fiber products with excellent enduring flame retardancy without using halogen (Cl and Br) flame retardant. The resin compound has the advantages of high oxygen index, droplet resistance, low heat release rate, no halogen, little toxicity, low smoke dust emission, little influence on the mechanical properties of base materials, etc.

A method of preventing a pre-ignition event within a cylinder (20) of a spark ignition engine (100) involves taking in-cylinder measurements and using the measurements to determine the instantaneous heat being released within the cylinder (20) as a function crank angle. If significant heat is being released before the intended spark timing, additional fuel is injected into the cylinder (20) immediately following the detection of early heat release (pre-ignition) within the same engine cycle, preferably within 45 crank angle degrees following the detection of pre-ignition. The additional fuel quenches the heat released within the cylinder (20) to prevent a pre-ignition event.

The present invention discloses silicious expanding fire retardant in the structure as shown and its preparation process. Being superior to traditional fire retardant, which contains halogen and hydroscopic, the silicious expanding fire retardant has three essentials as expanding fire retardant, and 9, 10-dihydro-9-oxo-10-phospha phenanthryl-10-oxide without phosphate ester structure as acid source, and possesses excellent fire retarding performance.

The invention discloses a nano composite expansion flame retardant polyurethane foamed plastic and a preparation method thereof. The nano composite expansion flame retardant polyurethane foamed plastic is characterized in that the preparation method comprises the following steps: evenly mixing 40 to 80 percent of polyol, 0.1 to 3 percent of foaming agent, 0.1 to 2 percent of foam stabilizer, 0.1 to 2 percent of catalyst, 0.5 to 4 percent of expandable graphite, 0.5 to 9 percent of halogen free phosphate ester or phosphonate ester and 0.5 to 5.5 percent of organic modified nano inorganic filler by weight percentage; and then mixing the mixture evenly with two or more isocyanate polyisocyanate compounds in the weight ratio of 1:2-2:1, and injecting the mixture into a die at 5 to 40 DEG C for foaming. The obtained nano composite expansion flame retardant polyurethane foamed plastic product effectively reduces the heat release rate and the total heat release amount of the material, improves the oxygen index and the vertical firing flame retardant property of the material, reduces the effect of an expansion type flame retardant on reducing the mechanical properties of the material, and meets the requirements of fire safety and project application.

The invention relates to a low-heat low-smoke flame retardant and application thereof in preparing a flame-retardant master batch. The low-heat low-smoke flame retardant comprises the following components in percentage by weight: 40-70% of hypophosphite, 20-50% of melamine compound, 0.1-10% of nano inorganic substance and 5-15% of assistant. The low-heat low-smoke flame retardant can be used for preparing a flame-retardant master batch. Compared with the prior art, the invention can effectively reduce the heat release rate, smoke release rate and total smoke generation quantity, thereby performing active functions of postponing the propagation of flame, reducing the rate of burning released substances and increasing the escape probability.

The invention discloses a kind of non-halogen inflating fire-retarding polyolefine composition, which includes 50 - 90 weight shares of thermosplasticity polyolefine basic material and 10 - 50 weight shares of non-halogen inflating fire retarder. The non-halogen inflating fire retarder is comprised of non-halogen charcoal becoming fire retarder, non-halogen nitrous fire retarder and APP, weight proportions of which are 1 - 6 : 0.5 - 2 : 0.5 - 2. The compound has high oxygen index, melting drops resistance, low heat emitting velocity, no halogen, low toxicity, low smoke emission and small effect to dynam performance of basic material. It can be used in various fire retarding fields, and is especially suitable to be used in electrical wire cable, communications cable, shipping and auto industries.

The invention relates to the technical field of silicone rubber, and particularly relates to a ceramic fire-resistant and flame-retardant silicone rubber and a preparation method thereof. The ceramic fire-resistant and flame-retardant silicone rubber is composed of a component A and a component B in a weight ratio of 0.8-1.2: 1. The component A comprises the following raw materials in weight part: 60-140 parts of silicone rubber A, 35-45 parts of reinforcing agent, 60-100 parts of filler A, 11.4-17.2 parts of silane auxiliary agent A, 0.15-0.25 part of lubricant A, 0.1-0.3 part of flame retardant, and 0.5-1.5 parts of vulcanizing agent. The component B comprises the following raw materials in weight part: 60-140 parts of silicone rubber B, 230-290 parts of filler B, 3-6 parts of silane auxiliary agent B, and 0.2-0.4 part of lubricant B. According to the technical scheme of the invention, the ceramic fire-resistant and flame-retardant silicone rubber is good in fire-resistant and flame-retardant property, and excellent in comprehensive performance.

The invention relates to a surface modifying method of hollow glass beads and a flame-retardant application thereof. The surface modifying method of the hollow glass beads comprises the following steps: (1) performing ultrasonic washing of the hollow glass beads by using a sodium hydroxide solution; (2) repeatedly washing the hollow glass beads obtained in the step (1) with deionized water and absolute ethyl alcohol respectively, and drying; and (3) dissolving the treated hollow glass beads in a mixed solution of ethanol and deionized water, and performing reflux, heating and stirring; in the heating process, dropwise adding a solution for obtaining a coating, and then adding the sodium hydroxide solution while keeping a neutral environment; and stirring for 5h, performing suction filtration and drying. In the invention, the modified hollow glass beads are adopted as a flame retardant to prepare a flame-retardant thermoplastic polyurethane composite; cone calorimeter experiments indicate that the parameters of the composite such as heat release rate, total heat release, smoke generation rate and smoke factor are remarkably reduced while the residual mass of carbon residues is greatly increased.

The invention discloses an external wall thermal insulation material and a preparation method thereof. The external wall thermal insulation material is prepared from the following raw materials in parts by weight: 80-90 parts of methylene diphenyl diisocyanate, 65-75 parts of polyether polyol, 20-30 parts of straw fiber, 10-15 parts of glass fiber, 20-25 parts of organic nano-montmorillonite, 30-35 parts of flame retardant, 25-30 parts of smoke suppressor, 1-5 parts of reaction catalyst, 8-15 parts of crosslinking catalyst, 1-5 parts of coupling agent, 15-25 parts of deionized water and 1.5-5 parts of foam stabilizer. The prepared external wall thermal insulation material has the advantages of good fireproof property, high thermal insulation property, high wear resistance, high stability, high physical and mechanical properties, low cost and saving of energy.

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 low-smoke low-toxicity flame-retardation hard polyurethane foam plastics and a preparation method thereof. The low-smoke low-toxicity flame-retardation hard polyurethane foam plastics comprise the following raw materials: 100 parts of polyether polyol, 120-150 parts of isocyanate, 10-20 parts of an intumescent flame retardant, 1-3 parts of a metallic compound, 0.5-2 parts of attapulgite, 1-5 parts of a foaming agent, 1-4 parts of a foaming stabilizer, and 3-6 parts of a foaming catalyst. The preparation method comprises the following steps: mixing, casting and foaming. The low-smoke low-toxicity flame-retardation hard polyurethane foam plastics have good flame resistance, and achieve a V-0 grade in an UL94 vertical combustion test. At the same time, an expandable charcoal layer formed after combustion of the fire retardant, and the added metallic compound and the attapulgite are capable of absorbing and catalyzing toxic gas, effectively reduce heat release rate and total heat release rate of the materials, and can solve the problem of large flue gas generation amount of the foam plastics prepared by the additive-type flame retardant.

The invention relates to a halogen-free expanded flame retardant cable outer sheath material composition and a preparation method thereof, and belongs to the technical field of cable material. The material is characterized by comprising an ethylene-vinyl acetate copolymer binder, an antioxidant, an ethylene vinyl acetate grafted maleic anhydride copolymer compatilizer, an antioxidant, an ammonium polyphosphate flame retardant, a pentaerythritol flame retardant, a release agent, and further comprising 1-3% of halloysite nanotubes and 1-2% of a silane coupling agent. The invention introduces halloysite nanotubes into the halogen-free expanded flame retardant ethylene-vinyl acetate cable sheath material to realize the purpose of flame retardant modification without affecting properties of the material, and at the same time to enhance the mechanical properties of the material. The invention has the advantages of simple process, easy operation and control, low cost of raw materials and wide range of sources; and the halogen-free expanded flame retardant cable sheath material prepared from the halogen-free expanded flame retardant cable outer sheath material composition provided by the invention has good mechanical and flame retardant properties.

The present invention relates to a nano-Mg-Al hydrotalcite fire-retardant EVA foaming material comprising, by weight, 60-90 parts of an ethylene-vinyl acetate copolymer with 10-22wt% of VA, 2-10 parts of a foaming agent, 0.5-1 part of a foaming accelerator, 0.3-5 parts of a coupling agent, 0.5-1 part of a crosslinking agent, 10-50 parts of a flame retardant and 0.5-2 parts of a releasing agent, and the flame retardant is nano-Mg-Al hydrotalcite. Compared with traditional metal hydroxide flame retardants, the nano-Mg-Al hydrotalcite has great advantages in improvement of the limiting oxygen index, improvement of vertical combustion performances and reduction of heat release rate and other flame retardant aspects, and is better fire-retardant inhibitor. The present invention also provides a preparation method of the foaming material, and the method is simple to operate, the foaming process is not needed to be further modified or changed, production cost can be reduced, and energy can be saved.

The invention relates to a flame retardant thermoplastic polyurethane elastomer (TPU) and a preparation method thereof. The flame retardant TPU comprises the following components in parts by mass: 70-90 parts of TPU, 9.7-29.875 parts of intumescent flame retardants and 0.025-3.75 parts of ionic liquids. The intumescent flame retardant TPU composite material is prepared by adopting the composite intumescent flame retardant. The vertical flame test level of the composite material is increased to V-0. A dense intumescent char layer is formed on the specimen surface of the composite material, so that the composite material has good flame retardant effects. Under the condition of small additive amount of the ionic liquids, the oxygen index of the ionic liquid and intumescent flame retardant synergistic flame retardant TPU composite material is increased, so that the vertical flame performance embodying molten drop resistance is obviously improved, the heat release rate and total heat release can be well reduced, the charring performance during flaming is improved and the composite material has certain effects on smoke suppression.

The invention discloses a ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent and a preparation method of the ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent. The preparation method of the polymer is as follows: putting 10-(2,5-dyhydroxyl phenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide into a reactor, adding a solvent,stirring for 5-10 minutes, adding an acid-binding agent; taking R1,R2'-ferrocene oxalyl chloride, adding the solvent, mixing, adding into the reactor dropwise, thermally insulating, stirring and reacting for 1-15 hours at the temperature of 0-50 DEG C under the protection of nitrogen after finishing adding dropwise; pouring a liquid obtained after the reaction into a precipitator while stirring, wherein the volume of the precipitator is 5-10 times that of the liquid, precipitating a yellow solid, carrying out suction filtration, washing a filter cake by using the precipitator, and drying to obtain the ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent. The ferrocene-DOPO biradical polyester type flame retarding and smoke suppressing agent can be used to retard flame and suppress smoke of high polymer materials like polyolefins and epoxy resins.

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 preparation method of a flame-retardant type wood-plastic composite. The preparation method includes the steps of adding plant fiber to a reaction still, adding an aluminum sulfate solution or a magnesium sulfate solution over stirring, dropwise adding ammonia water, standing for 15-40 min, conducting drying at 80 DEG C after even stirring, obtaining flame-retardant modified plant fiber, fusing, mixing and forming 10-250 parts of flame-retardant modified plant fiber, 90-120 parts of plastic and 1-10 parts of compatilizer, and obtaining the flame-retardant type wood-plastic composite. The heat release speed is low and the smoke yield is small when the wood-plastic composite combusts; compared with a composite without fire retardant, the flame retardance performance of the composite is remarkably improved; the method is easy to operate, and production cost is low.

The invention discloses phosphated lignin-based flame-retardant and reinforced rigid polyurethane foam and a preparation method thereof. The polyurethane foamed plastic is prepared by mixing, pouring and foaming 50-90 parts of bio-based polyhydric alcohols, 10-50 parts of phosphated lignin, 1-3 parts of amine catalyst, 0.05-0.2 part of tin catalyst, 0.5-2 parts of foam stabilizer, 100-140 parts of isocyanate and 4-7 parts of water. The activity of the lignin is improved through phosphorization modification, and formation of a crosslinking network of the polyurethane foam system is promoted, so that the mechanical property of the foam is improved, the utilization rate of the lignin in the polyurethane foam is increased, and the production cost of the polyurethane foam is reduced. In addition, an anhydrous phosphate solution in modified liquid directly serves as a flame retardant component and is uniformly dispersed in the polyurethane foam, and the heat release rate of the polyurethane foam is reduced, so that the polyurethane foam has high flame-retardant property.