90results about How to "Efficient flame retardant effect" patented technology

The invention relates to a flame retardant sodium-ion battery electrolytic solution and application thereof. The electrolytic solution comprises the following ingredients with the concentration: 0.001-2mol/L sodium salt, carbonate esters and/or ether organic solvents, 0.1-50% of a flame retardant additive and 0-0.5mol/L other functional additives. The flame retardant sodium-ion battery electrolytic solution is applied into a sodium primary battery, a sodium secondary battery and a sodium ion battery. A sulfuryl fluoride base group-containing compound has good flame retardance, has little influence on the electrochemical performance and can be used as a novel electrolytic solution flame retardant additive; the flame retardant additive is added into the electrolytic solution, so that the combustibility of the electrolytic solution can be reduced. A phosphonitrile base group-containing compound has good flame retardance, has little influence on the electrochemical performance, and can be used as a novel electrolytic solution flame retardant additive; the flame retardant additive is added into the electrolytic solution, so that the combustibility of the electrolytic solution can be reduced. After the electrolytic solution is applied to the sodium battery, the combustion possibility of the electrolytic solution is zero.

The invention belongs to the material technical field, and relates to a preparation method for modifying a melamine pyrophosphate fire retardant by grafting oxidized grapheme, which comprises the following steps: adding melamine and anhydrous sodium pyrophosphate in distilled water, fully stirring for uniformly dispersing a system; adding an oxidized grapheme colloidal solution through ultrasonic dispersion in the above system, adding a protonic acid dilute solution of a stabilizing agent for catalysis drop by drop, adjusting pH value of the reaction system, heating, stirring, after the reaction is completed, performing pumping filtration on the reaction products, washing, and drying products to obtain the melamine pyrophosphate fire retardant. The preparation method has the advantages of high efficiency, easy operation and environmental protection, and the prepared halogen-free expansion-type fire retardant has the advantages of small particle size and high thermostability, can be used in a halogen free system of polyolefin, and can be used for polyamide, polyester, rubber and intumescent fire retardant paint.

The invention discloses a preparation method of flame-retardant cellulose fiber through metal ion grafting modification, and belongs to the technical field of flame-retardant textile products. The preparation method comprises the following steps: at first, grafting maleic anhydride to the cellulose fiber macromolecular chain, then modifying the grafted cellulose fiber by metal ion compounds, wherein the introduced carboxyl group can carry out grafting modification with a plurality of metal ions, and finally preparing the flame-retardant cellulose fiber through a common treatment method. The prepared flame-retardant cellulose fiber has an inherent flame-retardant property, an ideal flame-retardant effect can be achieved by using only a little amount of added flame retardant namely the metal ions for grafting, because the flame-retardant cellulose fiber has an inherent flame-retardant property, the conventional flame retardants such as phosphorus flame retardant, nitrogen flame retardant, halogen flame retardant, and the like are not needed, the cellulose fiber will not give off toxic gas during the application process, and the environment pollution generated during the production process and application process of cellulose fiber and the pollution caused by the waste cellulose fiber are reduced.

The invention relates to a flame-retardant insulation vulcanized fiber board and a manufacturing technique thereof. On the basis of paper making technology, plant fibers are compounded with many flame retardants, and a production technique combining in-pulp addition and surface treatment is adopted to endow the vulcanized fiber paper with high efficiency, environmental protection and enduring flame retardancy. Meanwhile, the vulcanized fiber board has favorable machining properties (pressure resistance, impact resistance, cutting resistance, scratching resistance, no stratification or blowout under pressure, and the like), and favorable electric insulation properties. The flame-retardant insulation vulcanized fiber board is an excellent environment-friendly special-structure multifunctional material. The production technique comprises the following steps: adding flame retardants in the pulp, carrying primary molding, vacuum dehydration and high-temperature hot-press drying, and impregnating the flame retardants on the surface. The invention has the advantages of lower production cost, simple production technique, easy control, low energy consumption and less water and power consumption, can not produce secondary pollution on the environment, and can implement clean production.

The invention discloses a thermoplastic resin compound with outstanding flame- proof and anti- vibration property. The component proportions are as follows: panlite 60- 90, polyacryl-nitrile- butadiene- polystyrene 10- 40, additional compatiable agent 1- 10, additional phosphate compound 5- 15, additional polyorganosilicon oxidant 1- 10, additional metal oxidant or inorganic acidic metal salt 1- 5. The product is characterized by environmental protection, high- efficiency flame proof and good mechanical property.

The invention discloses a sandwich structural high-efficiency flame-retardant coating layer with fire warning and super-hydrophobic functions as well as a preparation method and application of the coating layer. In the preparation method, a bottom electroconductive layer, a middle temperature-sensitive sensing layer, and a top superhydrophobic electroconductive layer are sequentially prepared on aflammable substrate. The bottom electroconductive layer is prepared by the following steps: uniformly dispersing a metal nano material and an oil-soluble long-chain polymer into an organic solvent toform a coating A, spraying the coating A onto the substrate, and performing primary drying; and repeating the processes of spraying and drying for 1-10 times. Compared with the prior art, the flame-retardant coating layer prepared by the invention can show an ultra-sensitive fire warning function and excellent flame-retardant performance even if applied to a large-area substrate; the surface of the coating layer also has super-hydrophobicity, so that the coating layer shows excellent self cleaning and water resistance; and the flame-retardant coating layer prepared by the invention can give reliable fire safety to flammable materials, and can be widely used in the fields of transportation, furniture electrical appliances, building decoration, electric wires and cables and the like.

The invention relates to a DOPO-modified cyclophosphazene fire retardant and preparation and application thereof. The structural formula of the fire retardant is as shown in the specification. According to the preparation, a DOPO hydroxymethyl derivative DOPO-CH2OH, phosphonitrilic chloride trimer and an acid binding agent react in a solvent so as to obtain the fire retardant. The DOPO-modified cyclophosphazene fire retardant is used as a blending additive flame retardant to be applied to thermosetting or thermoplastic polymers, or is used as a fire retardant for after-treatment to be applied in flame-proof treatment of textile. The prepared fire retardant is a phosphorus-nitrogen type fire retardant, and has good flame resistance, contains no halogen and is beneficial to environmental protection.

The invention discloses antibacterial leather and a preparation method thereof. The leather takes organic silica gel as the main component, silver carboxymethyl chitosan serves as an antibacterial factor, modified nano-silica and modified layered bimetallic oxide serve as the flame retardant factors, by means of the synergistic effect of all components, such as a good combination effect of silvercarboxymethyl chitosan and a substrate, a synergistic flame retardant effect between the flame retardant factors, a bonding effect between modified nano-silica and dimethyl silicone oil and a synergistic effect between high-viscous dimethyl silicone oil and low-viscous dimethyl silicone oil, the process is improved, good antibacterial and flame retardant properties and other properties are obtained, both the mechanical property and environmental protection requirements of the material are achieved, the performance requirements of leather materials such as bags, shoes and clothing, sports equipment and medical equipment can be met, and the leather has broad market prospects.

The invention discloses a preparation method of water-insoluble magnesium silicate flame-retardant viscose fibers. The preparation method comprises the steps of adding micron-scale magnesium silicate powder of which the particle size is less than 5 microns into an appropriate amount of deionized water, and performing ultrasonic dispersion to prepare magnesium silicate dispersion liquid; adding the prepared magnesium silicate dispersion liquid which accounts for 5-40% of the mass of the flame-retardant viscose fibers into a viscose solution, and fully stirring; performing subsequent processes by adopting conventional technical means to finally prepare a flame-retardant viscose fiber product. In the flame-retardant viscose fibers disclosed by the invention, magnesium metal ions play a major role in flame retardance. The preparation method of the water-insoluble magnesium silicate flame-retardant viscose fibers, disclosed by the invention, is simple in process, easy to operate and control and relatively low in manufacturing cost; the flame-retardant viscose fibers prepared by adopting the method can achieve relatively good heat-resistant and flame-retardant effects, can not release poisonous gas in use, and can not cause environmental pollution after being abandoned.

The invention relates to the technical field of polymer composite materials, and particularly discloses a high-flexibility, oil-resistant, low-smoke, halogen-free and flame-retardant cable material and a preparation method thereof. The cable material is prepared from the following components in parts by weight: 10 to 16 parts of polyurethane elastomer, 20 to 32 parts of first type ethylene-vinyl acetate copolymer, 20 to 40 parts of second type ethylene-vinyl acetate copolymer, 8 to 16 parts of compatilizer, 0 to 15 parts of high-density polyethylene resin, 6 to 12 parts of polyolefin plastomer, 0.8 to 1.2 parts of antioxidant, 1.6 to 2.4 parts of processing aid, 70 to 180 parts of inorganic flame retardant, 19 parts to 56 parts of an assistant flame retardant and 1.4 parts to 2.6 parts of an assistant cross-linking agent. The polyurethane, the ethylene-vinyl acetate copolymer, the compatilizer, the polyolefin plastomer and the like are compounded, so that the cable material has excellent oil resistance, temperature resistance and mechanical properties.

The invention relates to a polycarbonate material, a high-efficiency flame-retardant polycarbonate material and a preparation method thereof. The high-efficiency flame-retardant polycarbonate materialis prepared from the following raw materials in parts by mass: 100 parts of PC resin, 0.02-0.2 part of a sulfonate flame retardant, and 1-9 parts of filling mineral powder; PDMS, mineral powder and stannous chloride are uniformly mixed in proportion and heated to 90-120 DEG C; stirring is kept, a reaction is conducted for 4 h, and filtering, washing and drying are conducted after the reaction isfinished to obtain the filling mineral powder; the preparation method comprises the following steps: weighing the PC resin, the sulfonate flame retardant, the filling mineral powder and other raw materials in parts by mass, adding the weighed materials into a high-speed mixer, and uniformly stirring and mixing to obtain a mixed material A; putting the mixed material A into a twin-screw extruder with a screw length-diameter ratio of 32-36 to be subjected to extruding and granulating to obtain the high-efficiency flame-retardant polycarbonate material, and the flame-retardant polycarbonate material is economical in cost and has good flame-retardant properties, thermal deformation temperature and mechanical properties.

The invention discloses a solvent based flame-retardant pressure-sensitive binding agent and a preparation method thereof and belongs to the field of binding agents. The flame-retardant pressure-sensitive binding agent is prepared by blending the solvent based flame-retardant binding agent and an organic flame retardant in a weight ratio of 10:0.5-2.0, wherein the organic flame retardant is a phosphoric flame retardant; and the solvent based pressure-sensitive binding agent comprises the following components in percentage by weight: 20 to 35 percent of olefine acid soft monomer, 5 to 20 percent of olefine acid hard monomer, 0.5 to 5 percent olefine acid of functional monomer, 42 to 70 percent of organic solvent, 0.1 to 3 percent of oil soluble initiator and 0.05 to 0.5 percent of chain transfer agent. A solvent system is adopted in the flame-retardant pressure-sensitive binding agent. A flame-retardant coating in the flame-retardant pressure-sensitive binding agent adopts a solvent based coating. The solvent based coating is melted to form a film so that the fusing performance of an auxiliary agent and the solvent based flame-retardant pressure-sensitive binding agent in a film forming process is guaranteed to be more uniform, flame-retardant efficiency of the flame retardant with the same amount is higher, and the solvent based flame-retardant pressure-sensitive binding agent has high initial tack and high-efficiency retardant effectiveness.

The invention relates to an environmental protective halogen-free inorganic nano-modified polyurethane electronic flame retarding film material. In order to overcome the problems of secondary harmful gas pollution etc. resulted from the burning of the existing halogen electronic flame retarding film, the invention synthesizes a new generation halogen-free environmental protective electronic flame retarding film by taking novel nano-inorganic silicate and phosphorous-nitrogenous compound as a flame retardant and taking polyurethane material as a structure. The halogen-free inorganic nano-modified polyurethane electronic flame retarding film material includes 20-60 part by weight of pre-polymerized material of the inorganic nano-modified polyurethane, 4-10 part by weight of micromolecule polyhydric alcohol, 0-10 part by weight of vegetable oil, 0.01-1 part by weight of antioxidant, 0-5 part by weight of plasticizer, 30-50 part by weight of phosphorus-nitrogen flame retardant, and 0-5 part by weigh of color paste. The halogen-free inorganic nano-modified polyurethane electronic flame retarding film has the characteristics of non-toxicity, low smoke and high efficiency during burning at high temperature, thus meeting the requirements of environmental protection.

The invention discloses a flame-retardant polyether polyol with a nitrogen structure and a preparation method thereof. The flame-retardant polyether polyol with the nitrogen structure is prepared from the following components in parts by weight: 5-20 parts of phenol, 10-60 parts of formaldehyde, 0.001-0.05 part of a basic catalyst, 5-20 parts of melamine, 2-10 parts of a co-initiator, 60-150 parts of epoxy chloropropane and 0.05-2.5 parts of a polymerization catalyst. The preparation method comprises the following steps: heating and melting phenol, and adding the basic catalyst and formaldehyde to react for 1-4 hours to obtain resol; adding melamine to keep on reacting to obtain hydroxymethylated melamine-phenolic resin; and adding the co-initiator, epoxy chloropropane and the polymerization catalyst, heating to 70-100 DEG C to react for 16-24 hours, and reacting in vacuum at 100-130 DEG C for 1-2 hours to obtain the flame-retardant polyether polyol with the nitrogen structure. The preparation method is easy to operate, does not need high-pressure reactions, and has low cost.

The invention discloses a preparation process of a bagasse base artificial board. The preparation process of the bagasse base artificial board comprises the following steps: (1) pretreatment of bagasse: the bagasse is put in an oven for drying under the condition of 40-55 DEG C, and then, is put in a crusher for crushing by 30-45 min at a speed of 200-500 r/min to obtain bagasse powder, wherein the fineness reaches 100 meshes; (2) a basal body material is prepared; (3) spraying: a layer of flame retardant pulp is uniformly sprayed on the surface of the basal body material, and is aired; and the thickness of the pulp is controlled to obtain a material to be pressed; and (4) pressing: the material to be pressed is poured in a mold for layer-by-layer pavement, and is fed in a mold pressing former for prepressing, continuous heating to 50 DEG C, hot pressing, pressure relief and cooling to the room temperature; and then, a layer of flame retardant pulp is coated to put in a dryer for drying and molding; and the bagasse base artificial board is obtained after cooling. The prepared artificial board achieves the effects of high-temperature resistance and flame retardance, and achieves higher market popularization value.

The invention provides a fire extinguishing agent. The fire extinguishing agent is prepared from the following components in parts by weight: 10-20 parts of ammonium chloride, 90-100 parts of diammonium phosphate, 90-100 parts of sodium bicarbonate, 20-30 parts of urea, 70-90 parts of ammonium sulfate, 10-20 parts of sodium silicate and 280-340 parts of water. The fire extinguishing agent disclosed by the invention has a highly-efficient flame-retardant effect; the components of a fire extinguishing agent composition are non-toxic and harmless to the human body and have no influence on the environment at the same time; and a prepared fire extinguisher is convenient to use and can be directly thrown into a fire source to extinguish fire.

The invention discloses a preparation method of a cyclodextrin-based phosphated flame retardant and relates to the technical field of flame retardant. The preparation method comprises the following steps: (1) preparing a modified cyclodextrin base solution; (2) dropwise adding phosphorus oxychloride into the modified cyclodextrin base solution; stirring and carrying out rotary evaporation and drying to obtain solid matters; (3) crushing the solid matters prepared by step (2) and immersing the crushed solid matters in absolute ethyl alcohol; then filtering and washing with de-ionized water; then carrying out the rotary evaporation and drying to obtain the cyclodextrin-based phosphated flame retardant. The cyclodextrin-based phosphated flame retardant provided by the invention not only has a good flame-retarding effect, but also is green and environmentally friendly.

The invention belongs to the field of flame-retardant cables, and particularly relates to a preparation method of a radiation-preventive flame-retardant cable material. The preparation method includes following steps: (1), preparing a radiation-preventive agent; (2), activating the radiation-preventive agent; (3), preparing the cable material: mixing a flame retardant, the radiation-preventive agent after being activated, carbon nanotube, vinyl distearamide, glycerol triacetate, triazine ultraviolet absorbent, ethylene glycol dimethacrylate, polyolefin elastomer, triethylene diamine, initiator, antioxidant 1010 and high-density polyethylene, putting a mixture into a torque rheometer, blending at 100-125 DEG C and 100-150r/min for 25-35min, and performing extrusion molding to obtain the cable material. The cable material prepared by the method has high radiation-preventive performance, excellent mechanical performance, good flame-retardant effect and high market popularization value.

The invention relates to an antimony-free flame-retardant polyvinyl chloride cable material as well as a preparation method and application thereof. The antimony-free flame-retardant polyvinyl chloride cable material comprises the following components in parts by weight: 100 parts of polyvinyl chloride; 5-12 parts by weight of a flame retardant; and 30-160 parts by weight of an auxiliary agent. The flame retardant is prepared from aluminum hypophosphite and 2,3-dimethyl-2,3-diphenyl butane according to the mass ratio of 3:1 to 10:1. The compound flame retardant of aluminum hypophosphite and 2,3-dimethyl-2,3-diphenyl butane according to the specific mass ratio are added into the antimony-free flame-retardant polyvinyl chloride cable material, the efficient flame-retardant effect can be achieved under the condition that the adding amount of the flame retardant is small, it can be guaranteed that the cable material has the excellent mechanical property, the high-efficiency flame-retardant effect is kept in a wide hardness range, and the raw materials adopted by the invention are environment-friendly and nontoxic raw materials and can be recycled, so that the production efficiency is improved and the production cost is reduced.

The invention discloses an MXene nanosheet with a free radical capturing function as well as a preparation method and application of the MXene nanosheet. The preparation method of the MXene nanosheet with the free radical capturing function comprises the following steps: 1) adding MXene into a solvent, and carrying out ultrasonic dispersion to obtain an MXene dispersion liquid; and 2) adding organic acid into the MXene dispersion liquid, and stirring to obtain the MXene nanosheet with the free radical capturing function. The MXene nanosheet has an excellent free radical capturing function, not only has excellent storage stability in a water-oxygen environment, but also can quench high-activity peroxy free radicals, inhibit a combustion reaction and play an efficient flame-retardant role during combustion, and also has excellent conductivity and thermoelectric sensing characteristics; the method can be used in the fields of motion monitoring, temperature sensing, fire early warning and the like, and has a very wide application prospect.