164results about How to "Efficient flame retardant" patented technology

The invention discloses a preparation method of reaction type halogen-free phosphorous flame retardant polyester polyol. The preparation method is characterized by comprising following steps: taking binary acid, dihydric alcohol, halogen-free phosphorous copolymer fire retardant and catalyst to be put into a reaction kettle, stirring and warming up, filling nitrogen to empty, reacting for 2 to 8h when the temperature reaches 125 to 155 DEG C, then warming up to 180 DEG C, vacuumizing to ensure the air pressure to be 100 to 5000 Pa, controlling reaction temperature to be 180 to 245 DEG C, after reacting for 2 to 4h, sampling at an interval of 10 to 40 min to test acid value, stopping heating when the acid value is reduced below 2 mgKOH/g, and stirring for cooling so as to obtain the reaction type halogen-free phosphorous flame retardant polyester polyol. The reaction type halogen-free phosphorous flame retardant polyester polyol is applied to synthesis of rigid or soft polyurethane foamed plastic, and the prepared polyurethane foamed plastic has excellent flame retardant property, and the limit oxygen index can be up to more than 32%.

The invention provides preparation and application methods of a lignin-based flame retardant, and relates to a flame retardant. The flame retardant is prepared from the following raw materials: lignin, isocyanate, 9,10-dihydro-9-oxa-phenanthrene-10-oxide (DOPO). The preparation method specifically comprises the following steps: performing reaction on the lignin and the isocyanate at certain temperature; performing reaction with the DOPO at certain temperature; finally, drying the obtained product in a vacuum drying box, and smashing the product, thus obtaining the flame retardant. According to the flame retardant, hydroxyl on the lignin is reacted with the isocyanate; meanwhile, with a phosphate structure, the flame retardant has a good flame retarding effect; benzene ring structures contained in the lignin and the DOPO can enhance the mechanical property of the material. The invention further provides a preparation method of flame retarding polyurethane. The method comprises the steps of performing reaction on polyatomic alcohol and the isocyanate at certain temperature till the system is sticky, adding the phosphorus-containing lignin-based flame retardant and other auxiliaries, and performing thermal curing and molding. The obtained flame retarding polyurethane can be used as an adhesive, a coating, a foaming material, a terrace coating material and the like.

The invention discloses a thermoplastic polyester elastomer heat-shrinkable casing tube for an automobile wire harness as well as a preparation method and an application of the heat-shrinkable casing tube. The heat-shrinkable casing tube comprises the following components in parts by weight: 50-80 parts of a thermoplastic polyester elastomer, 30-60 parts of halogen-containing resin, 5-15 parts of black masterbatch, 5-30 parts of diantimony trioxide, 0-100 parts of a flame retardant, 3-15 parts of a flame retardant synergist, 1-4 parts of a thermal stabilizer, 0.5-4 parts of an antioxidant, 0.5-2 parts of a silicone aid and 1-2.5 parts of a sensitizer. The preparation method comprises the following steps: mixing the thermoplastic polyester elastomer, the halogen-containing resin, the black masterbatch, diantimony trioxide, the flame retardant, the flame retardant synergist, the thermal stabilizer, the antioxidant and the silicone aid, adding the sensitizer, mixing, granulating, extruding to form a tube, performing irradiation crosslinking, stretching by expanding, shaping by cooling, flattening, and marking. The heat-shrinkable casing tube has the advantages of relatively low price, high-efficiency flame retardance, excellent mechanical property, low pollution, high-temperature oil resistance, acid-base corrosion resistance and capability of being applied in a severe working environment.

The invention discloses high-temperature oil-resistant and flame-retardant chlorinated polyethylene heat-shrinkable tubing as well as a preparation method and an application thereof. The heat-shrinkable tubing comprises the following components: chlorinated polyethylene, resin A, resin B, a polymer compatibilizer, black masterbatch, antimonous oxide, a flame retardant synergist, a halogen-free flame retardant, a thermal stabilizer, hydrotalcite, an antioxidant, a sensitizer and a silicone additive. The method comprises the following steps: firstly, banburying the antimonous oxide, the flame retardant synergist, the halogen-free flame retardant and hydrotalcite; adding and banburying the chlorinated polyethylene, the resin A, the resin B, the polymer compatibilizer, the black masterbatch, the thermal stabilizer, the antioxidant and the silicone additive; finally adding a sensitizer and banburying, and then palatalizing, and extruding to form the tubing; and carrying out irradiation crosslinking, expanding drawing, cooling sizing, and marking, so as to obtain the high-temperature oil-resistant and flame-retardant chlorinated polyethylene heat-shrinkable tubing. The high-temperature oil-resistant and flame-retardant chlorinated polyethylene heat-shrinkable tubing has the advantages of being low in price, efficient, flame-retardant, excellent in mechanical property, low in pollution, high in high-temperature oil resistance, and good in resistance to acid and alkali corrosion, and can be applied to a bad working condition.

The invention belongs to the technical field of electrical wire and cable production processes, and particularly relates to a cleaning-type oil-resistant cable. Conductors (1) are copper conductors, the structures of the conductors adopt a first type or a second type, a cross-linked polyethylene insulating layer (2) is extruded on the conductors (1) respectively by applying a warm water cross-linking technology to serve as a cable core, an inner lining layer (3) is arranged outside the cable core, an armor layer (4) is armored by back-twist type galvanized fine steel wires, aluminum-plastic composite tapes are longitudinally coated and welded outside the armor layer (4) to form a water and tide blocking layer (5), and a flame-retardant jacket layer (6) made of a butyronitrile material is arranged at the outermost layer. With a double-layer co-extrusion mode to extrude, the arrangement of the high-strength water and tide blocking layer capable of longitudinally preventing tension in the overall cable and a process of double-layer co-extrusion protection layers, the cleaning-type oil-resistant cable has not only very strong resistance to abrasion and oil, but also better resistance to cleaning, thereby the quality stability of the oil-resistant cable is improved and a new technical field is developed for the development of the cleaning-type oil-resistant cable.

The invention discloses a high-effective bio-based flame-retarding agent containing furan ring, and a synthesis method and an application of the flame-retarding agent. In the invention, with a bio-based compound containing furan ring and a phosphorus-containing compound being raw materials, the bio-based flame-retarding agent containing furan ring is prepared under protection by inert gas. The flame-retarding agent is very low in influence on thermo-stability of a resin matrix and can effectively improve crystallization property of the resin matrix, thereby improving mechanical strength and modulus of the material. When being applied to polymers, the flame-retarding agent has outstanding flame-retarding effect and can achieve flame retarding just by a less addition amount. The flame-retarding agent can alleviate thermal performance loss of a flame-retarding composite material and significantly improve crystallization and increase crystallization speed of the polymer matrix, thus significantly enhancing mechanical performance of the composite material. The flame-retarding agent can catalyze degradation of polylactic acid mainly in the manner of breaking molecular chains to form low-molecular-weight oligomers, then heat generated during combustion is released in the form of molten drops, thus achieving the flame retarding object.

The invention belongs to the technical field of a phosphorus-containing fire retardant and specifically relates to a preparation method for a polyphosphoester fire retardant with dual-DOPO as a branch chain. The method comprises the following steps: under the protection of inert gases, reacting 4,4'-dyhydroxyl benzophenone with phenyldichlorophosphate, phenyl dichlorophosphate or pentaerythritol diphosphate diphosphoryl chloride in an anhydrous acetonitrile solvent till no halogen hydride gas is emitted, thereby acquiring a polymerized fire retardant midbody; performing heating for reaction on the midbody, initiator and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide at the temperature of 130-160 DEG C; and performing melt grafting reaction, reducing the reaction temperature to 50-70 DEG C, adding ethyl alcohol, stirring and flowing back, performing suction filtration and drying, thereby acquiring the fire retardant. According to the invention, the difficulty of the traditional process that a highly polymerized fire retardant cannot be acquired under the effect of larger steric hindrance in the process of polymerizing after compounding micro-molecule midbody can be overcome; the compounded fire retardant has higher molecular weight and narrower molecular weight distribution; and the compounded fire retardant has excellent compatibility with substance, is difficult to migrate and has excellent durability.

The invention relates to the field of sponge products, and in particular to slow-resilient polyurethane sponge and a preparation method. The high-efficiency flame-retardant slow-resilient polyurethane sponge is prepared from the following raw materials in parts by weight: on the basis of 100 parts of two types of polyether glycol and one polymer polycol, 30 to 70 parts of modified MDI, 0.5 to 3.0 parts of foam stabilizer, 0.1 to 1 part of catalysts, 1.0 to 4.0 parts of foaming agents, 0.5 to 3.0 parts of alcohol amine chain extender, 0 to 20 parts of melamine, 5 to 30 parts of expandable graphite, 10 to 20 parts of liquid flame retardant, and 0 to 15 parts of liquid reaction flame retardant. The expandable graphite is used as a solid flame retardant to be added into a slow-resilient polyurethane sponge system, so that the consumption of the liquid flame retardant is reduced, the flame retardant performance of the slow-resilient sponge is greatly improved, and the physical performance is good.

The invention relates to a rubber material and a preparation method thereof, in particular to a flame-retardant modified natural rubber material and a preparation method thereof. The flame-retardant modified natural rubber material is composed of a polyphosphamine (PPA) flame retardant, natural rubber (NR), epoxidized natural rubber (ENR), stearic acid, zinc oxide, a promoter CZ, an antiager 4010, carbon black and paraffin. The preparation method includes: grafting the efficient PPA flame retardant which is self-prepared onto an ENR matrix to perform flame-retardant modification on the ENR; adding the ENR after being subjected to flame-retardant modification and various rubber processing auxiliaries into the NR through mixing; utilizing high compatibility of the ENR and the NR to realize uniform dispersion of the flame retardant in the NR matrix. The natural rubber material prepared by adopting the method has excellent flame retardancy, mechanical performance and good thermostability, and the problem of lowering in mechanical performance due to the fact that the flame retardant is added into the rubber matrix is improved substantially. The flame-retardant modified natural rubber material is suitable for tires, natural rubber plates, pipes, wires and cables and automobile rubber parts.

The invention relates to the field of daub materials, in particular to PU (polyurethane) daub and a preparation method thereof. The PU daub mainly comprises a component A and a component B, wherein the component A is mainly prepared from polyether polyols, MDI and a flame retardant; the component B is mainly prepared from polyether polyols, a curing agent, a flame retardant, an antifoaming agent, a dispersing agent, a leveling agent and a surfactant. During usage of the PU daub, the component A and the component B are mixed, the obtained PU daub has the characteristics that the PU daub has better mechanical properties and better waterproofness, and is capable of being cured at the normal temperature, flame-retardant, non-toxic and the like, and is applicable to insides and outsides of sea ships. The technology of the preparation method of the PU daub is simple and easy to implement.

The invention provides a weather-proof, halogen-free, flame-retardant, anti-corrosion and insulating fluorine-carbon coating. Fluorine-carbon resin is compounded with a halogen-free flame retardant, wherein the fluorine-carbon resin accounts for 45% to 58%, and the halogen-free flame-retardant filler accounts for 10% to 25%. The weather-proof, halogen-free, flame-retardant, anti-corrosion and insulating fluorine-carbon coating is high in adhesive force, good in temperature resistance, high in low-temperature drying speed and the like, has excellent flame-retardant performance, electrical insulating performance, anti-corrosion and damp-proof performance and excellent ultraviolet light resistance, has high applicability, and is especially suitable for the field of flame-retardant, anti-corrosion and insulating operation on the surface of electrical equipment.

The macromolecular flame-retardant fire-extinguishing agent is made up by using water soluble substrate containing anion group through the processes of cross-linking and grafting, adding correspondent flame-retardant active substrate, and mixing them with water. It is high in fire-extinguishing effect, and its performance is stable and cost is low.

The invention discloses a wear-resisting, high-flame-retarding, halogen-free and flame-retarding thermoplastic elastomer (TPE) composition for electric wires and cables. The wear-resisting, high-flame-retarding, halogen-free and flame-retarding thermoplastic elastomer composition is prepared from the following raw materials in percentage by weight: 20 percent to 40 percent of SEBS (styrene hydride-butadiene-styrene block copolymer), 20 percent to 40 percent of white oil, 10 percent to 30 percent of nylon, 5 percent to 10 percent of maleic anhydride grafted SEBS, 10 percent to 20 percent of diethyl aluminum hypophosphite, 10 percent to 20 percent of melamine cyanurate and 1 percent to 5 percent of other auxiliary agents. Aiming at the problem that the wearing-resisting performance of a conventional halogen-free and flame-retarding TPE electric wire and cable material based on the SEBS and polyolefin is poor, the invention provides the wear-resisting, high-flame-retarding, halogen-free and flame-retarding thermoplastic elastomer composition; the nylon and the TPE material are compounded by utilizing an excellent wear-resisting property of the nylon so as to improve the wear-resisting property of the TPE; the invention also accidentally finds out that the nylon is coordinated with a diethyl hypophosphite flame-retarding system, and efficient flame retarding is realized under the condition that a PPO (Polyphenylene Oxide) component does not need to be added.

The invention provides an efficient flame-retardant heat insulation composite fabric and an application. The efficient flame-retardant heat insulation composite fabric comprises a surface fabric, a middle layer and a lining fabric, modacrylic and Lenzing flame-retardant viscose fiber blended yarns serve as warp yarns of the surface fabric, aramid fiber 1313, aramid fiber 1414 and conductive fiberblended yarns are weft yarns, a surface layer is further provided with a nano-ceramic coating, the middle layer is mixture of aerogel and polyurethane, one or two of silicon-nitrogen flame-retardant viscose fibers, aramid fibers 1313, polysulfonamide and polyimide fibers are blended to form the lining fabric, and the middle layer is arranged between the surface layer and a lining layer and fittedwith the surface layer and the lining layer through flame-retardant adhesives. The efficient flame-retardant heat insulation composite fabric is used for manufacturing a flame-retardant heat insulation garment. The efficient flame-retardant heat insulation composite fabric is high in washing fastness by the aid of plasma treatment, the nano-ceramic coating and the middle layer of aerogel and shapememory polyurethane mixture are arranged, flame-retardant heat insulation effects are long and high, and the efficient flame-retardant heat insulation composite fabric has antibacterial health care functions and is widely applied.

The invention discloses a preparation method and an application of a halogen-free environment-friendly flame retardant, and belongs to the technical field of macromolecular compounds and solves the problem of environment pollutions caused in the process of burning halogen flame retardants. The preparation method of the halogen-free environment-friendly flame retardant comprises the following steps of: mixing pentaerythritol, boric acid and phosphoric acid in a mole ratio of 1:(0.3-1.8):(0.5-2), reacting at a temperature of 100-180 DEG C, stirring and reacting for 3-7 hours to generate pentaerythritol phosphate borate; and adding melamine in a mole ratio of melamine to pentaerythritol of (1-3.2):1 and a solvent in a weight ratio of solvent to the total material of to (1-2):1 into the pentaerythritol phosphate borate, reacting at a temperature of 80-140 DEG C, stirring and reacting for 1.5-5 hours to generate pentaerythritol phosphate borate melamine salt suspension, filtering and drying. The application of the halogen-free environment-friendly flame retardant comprises processes of adding the halogen-free environment-friendly flame retardant and accessory ingredients into a rubber-plastic material, mixing and forming to instantly obtain anti-flaming rubber-plastic products. The halogen-free environment-friendly flame retardant can be widely applied to the rubber-plastic products.

The invention provides a preparation method for a hyperbranched polyester based phosphorus-nitrogen type flame retardant. The method is characterized by comprising the following steps: (1) dissolvinghyperbranched polyester into deionized water to prepare a hyperbranched polyester solution; and adding orthophosphorous acid, carrying out sustained stirring, carrying out a reaction under water-bathconditions, then, carrying out separation and purification to prepare phosphorus-containing hyperbranched polyester, and carrying out baking in a vacuum baking oven for later use; and (2) dissolving the phosphorus-containing hyperbranched polyester into deionized water, adding urea, carrying out a reaction under condensation reflux conditions, and then, carrying out separation and purification toobtain phosphorus-nitrogen containing hyperbranched polyester, namely the hyperbranched polyester based phosphorus-nitrogen type flame retardant. Then, flame-retardant cotton fabrics are produced in apadding and baking manner. According to the flame-retardant finishing agent provided by the invention, raw materials and a process flow are friendly to environments and human bodies, no formaldehydeis released in both a flame-retardant finishing process of the cotton fabrics and a use process of the flame-retardant fabrics, and the cotton fabrics have excellent washing resistance while efficientflame retardance is obtained.