136 results about "Diphenyl phosphate" patented technology

The invention relates to a regeneration treatment method and application of a degradable high polymer material, and the regeneration treatment method comprises the following steps: degrading the degradable high polymer material in a system in which an organic nonmetal catalyst and a water-containing solvent exist to obtain a degradation product; wherein the degradable high polymer material comprises one or more of a polyester material and a polycarbonate material; the organic nonmetal catalyst is selected from one or more of diphenyl phosphate, binaphthol phosphate and organic alkali. By adopting the specific organic non-metal catalyst, efficient degradation of the degradable high polymer material can be realized, the degradation speed is high, the conversion rate is high, the reaction yield is high, and the cost is low; degradation products can be effectively utilized again as valuable chemicals.

The invention discloses a composite mineral admixture prepared from heat-stewed steel slag and a preparation method of the composite mineral admixture, and the mineral admixture is prepared from the following raw materials in parts by weight: 40-50 parts of heat-stewed steel slag powder, 20-30 parts of granulated blast furnace slag powder, 20-40 parts of fly ash, 0.01-0.1 part of a grinding aid and 0.5-4.0 parts of an exciting agent, wherein the grinding aid comprises glycerol and diethanol isopropanolamine, and the exciting agent comprises diphenyl phosphate, sodium sulfate and ammonium bicarbonate. The preparation method comprises the following steps: mixing calcium bicarbonate and water, spraying the mixture on high-temperature steel slag at 600-800 DEG C, carrying out hot braising under the condition of steam pressure of 0.2-0.5 MPa for 8-12 hours to pulverize the steel slag until the particle size is less than 5-10 mm, and carrying out vertical milling on the pulverized steel slag and a grinding aid for 20-40 minutes to obtain hot-braised steel slag powder; uniformly mixing the heat-stewed steel slag powder, granulated blast-furnace slag powder, fly ash, a grinding aid and an exciting agent in proportion to obtain mixed powder; and finally, grinding the mixed powder for 30-50 minutes by adopting a high-energy planetary ball mill to obtain the cement concrete composite mineral admixture with the specific surface area being greater than or equal to 600m < 2 > / kg. According to the invention, the potential hazard of poor stability of a cement concrete material caused by high f-MgO content in the steel slag is broken through, the steel slag is efficiently utilized to prepare a low-carbon green building material, a composite mineral admixture is developed, and the performance meets the II type requirement in JG / T 486-2015 Composite Admixture for Concrete.

The invention belongs to the technical field of high polymer materials, and particularly relates to a polyolefin composite material as well as a preparation method and application thereof. The polyolefin composite material is prepared from the following raw materials: polyethylene, a polyolefin toughening agent, a compound flame retardant and a filler, the melt index of the polyethylene at 190 DEG C / 2.16 kg is greater than or equal to 18 g / 10 min, and the bending modulus is less than or equal to 160 MPa; the polyolefin toughening agent is selected from at least one of an ethylene-propylene copolymer, an ethylene-butylene copolymer and an ethylene-vinyl acetate copolymer, and the melt index at 230 DEG C / 2.16 kg is greater than or equal to 9 g / 10 min; the compound flame retardant comprises tetrabromobisphenol S bis (2, 3-dibromopropyl) ether, antimony trioxide and hydroquinone bis (diphenyl phosphate), and the filler is at least one of talcum powder, barium sulfate and wollastonite. Through specific types of polyethylene, the polyolefin flexibilizer, the compound flame retardant and the filler, excellent flame retardance and toughness can be obtained.

The invention provides a low-yellowing dibenzylidene sorbitol nucleating agent and a preparation method thereof, and relates to the technical field of nucleating agents. The low-yellowing dibenzylidene sorbitol nucleating agent is prepared from the following raw materials in parts by weight: 60 to 80 parts of dibenzylidene sorbitol, 8 to 12 parts of sodium diphenyl phosphate, 5 to 7 parts of aluminic acid ester coupling agent modified talcum powder, 4 to 8 parts of silicon dioxide, 3 to 5 parts of manganese oxide modified mica and 0.5 to 1 part of calcium stearate. The invention provides a low-yellowing dibenzylidene sorbitol nucleating agent and a preparation method thereof.The compound nucleating agent is composed of dibenzylidene sorbitol and an inorganic nucleating agent, the nucleating agent has good compatibility with dibenzylidene sorbitol and can be evenly dispersed in plastic to form an effective nucleating center, the crystallization process of the plastic is promoted, and the yellowing resistance of the plastic is improved. Through compounding, the nucleating property, the anti-yellowing property and the thermal stability of the plastic product are improved.

The invention relates to the technical field of high polymer materials, in particular to a flame-retardant anti-ultraviolet aging PC-ABS composition and a preparation method thereof. The flame-retardant anti-ultraviolet aging PC-ABS composition is prepared from the following raw materials in parts by weight: 65 to 72 parts of PC resin, 25 to 30 parts of ABS resin, 12 to 15 parts of a composite flame retardant, 2 to 3 parts of an anti-ultraviolet agent, 8 to 12 parts of modified nano titanium dioxide, 4 to 6 parts of a toughening agent, 0.2 to 0.4 part of an anti-dripping agent and 0.2 to 0.5 part of an antioxidant, the composite flame retardant is composed of aluminum diethylphosphinate and cresyl diphenyl phosphate. Through precise design of a molecular structure and multi-scale interface regulation and control, the flame retardance, the ultraviolet aging resistance and the mechanical property are synchronously improved, and the limitation that in the prior art, the flame retardance, the ultraviolet aging resistance and the mechanical property are considered to be unmatched is broken through.

The invention relates to a method for simultaneously detecting 17 organophosphate substances in urine, and belongs to the technical field of detection. The invention relates to a method for simultaneously detecting 17 organophosphorus ester substances in urine, and the 17 organophosphorus ester substances are diethyl phosphate, di (2-chloroethyl) phosphate, bis (1-chloro-2-propyl) phosphate, diphenyl phosphate, dibutyl phosphate, xylene phosphate, di-p-tolyl phosphate, triphenylphosphine oxide, tri-(2-chloroisopropyl) phosphate, 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate and 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate. The invention relates to a flame-retardant and flame-retardant composite material which is prepared from the following components: 1, 2-dichloromethyl-trimethylene-bis [bis (2-chloroethyl) phosphate], bis (2-ethylhexyl) phosphate, tris (1, 3-dichloro-2-propyl) phosphate, triisobutyl phosphate, tributyl phosphate, tris (2-n-butoxyethyl) phosphate, resorcinol tetraphenyl diphosphate and bisphenol A bis diphenyl phosphate. The method has the characteristics of simplicity, convenience, high efficiency, accuracy, sensitivity, economy and the like.

The invention discloses a preparation method of bisphenol A bis (diphenyl phosphate), which comprises the following steps: S1, reacting phosphorus oxychloride with bisphenol A, and removing excessive raw materials after the reaction to obtain a reaction solution containing bisphenol A tetrachloro diphosphate; in the reaction, the mass ratio of the bisphenol A dichloro diphosphate intermediate to the bisphenol A tetrachloro diphosphate is controlled to be less than 0.1; and S2, adding phenol into the reaction liquid containing bisphenol A tetrachloro diphosphate, carrying out an end capping reaction, and removing excessive raw materials to obtain bisphenol A bis (diphenyl phosphate). By controlling the process conditions of the reaction in the first step, the reaction in the first step can be more sufficient and thorough, the final BDP monomer selectivity is improved, the impurity content of triphenyl phosphate is obviously reduced, and meanwhile, the product has better flowability and flame retardant property.

The invention relates to the technical field of waterproof materials, and particularly discloses an acrylic acid waterproof coating and a preparation method thereof. The acrylic acid waterproof coating provided by the invention is prepared from the following raw materials: a weather-resistant high-elastic emulsion, a modified filler, an auxiliary agent and water, the weather-resistant high-elasticity emulsion is prepared from the following raw materials: high-elasticity acrylic emulsion, vinyl-terminated hydroxyl-terminated fluorine-containing silicone oil, diisocyanate and dihydric alcohol; the modified filler is prepared from the following raw materials: barium sulfate, wollastonite, oleic acid modified titanium dioxide, an anionic dispersant and 2-ethylhexyl diphenyl phosphate; the auxiliary agent is prepared from cyclohexane-1, 2-dicarboxylic acid diisooctyl ester. Through the design of the weather-resistant high-elastic emulsion and the modified filler, and in cooperation with the specific plasticizer and other auxiliaries, the comprehensive properties such as adhesive force, water resistance, weather resistance and low temperature resistance of the acrylic waterproof coating are improved.

The invention discloses a fluoride-free flame-retardant PC / ABS composite material and a preparation method thereof, and relates to the technical field of PC / ABS composites.The preparation method comprises the following steps that PC resin, ABS resin, flame-retardant modified nanocellulose and bisphenol A-bis (diphenyl phosphate) are sequentially added into a double-screw extruder, extrusion granulation is conducted, and the fluoride-free flame-retardant PC / ABS composite material is obtained; the fluoride-free flame-retardant PC / ABS composite material is prepared from the following components in parts by mass: 48 to 64 parts of PC resin, 12 to 16 parts of ABS resin, 0.5 to 2 parts of flame-retardant modified nano cellulose and 13 to 14 parts of bisphenol A-bis (diphenyl phosphate).

The invention belongs to the technical field of plastic pipes, and particularly relates to a processing method of a high-toughness HDPE siphon drainage pipe. According to the processing method of the high-toughness HDPE siphon drainage pipe material, a three-layer structure design is adopted, the modified wood fiber filler is subjected to secondary modification, a hydrophobic interface layer is constructed, the modified wood fiber filler and matrix plastic are combined more tightly, the toughness and strength of modified wood fiber reinforced particles are enhanced, and the service life of the material is prolonged. And the modified wood fiber reinforced particles are added into the core layer for blending modification, so that the heat resistance and mechanical properties of the pipe are improved, and the adhesive force of the core layer to the inner and outer layers can be enhanced. The halogen-free flame retardant obtained by compounding modified magnesium aluminum hydrotalcite, octyl diphenyl phosphate and triphenyl phosphate can endow the outer layer with excellent flame retardant property, and does not generate toxic and harmful halogen gas in the combustion process, thereby meeting the environmental protection requirement. The HDPE siphon drainage pipe material prepared by the invention has excellent antistatic, flame-retardant, anti-aging, corrosion-resistant and mechanical properties.

This invention relates to the field of polyurethane foam materials, specifically, to a preparation process for an aging-resistant and flame-retardant polyurethane foam material. The preparation process includes the preparation of a composite flame retardant, the preparation of component A, and the preparation of the polyurethane foam material. This invention integrates the composite flame retardant into the cross-linked network of the polyurethane foam material via chemical bonds. The composite flame retardant is prepared by grafting a phosphorus-containing flame-retardant structure onto the cage-like polysilsesquioxane structure after a ring-opening reaction between the epoxy groups in glycidyl etheroxypropyl cage-like polysilsesquioxane or octacyclooxycyclohexylethyl cage-like polysilsesquioxane and the acidic hydroxyl groups in diphenyl phosphate. The composite flame retardant of this invention is less prone to migration, precipitation, or loss, and improves the rigidity and aging resistance of the polyurethane matrix through its rigid cage structure and benzene rings, thereby improving flame retardant performance while reducing adverse effects on the mechanical properties of the foam material.

The utility model relates to the field of diphenyl chlorophosphate, in particular to an efficient automatic preparation device which comprises a workbench, and a gear motor is fixedly arranged below the workbench. According to the efficient automatic preparation device disclosed by the utility model, through the arrangement of the gear motor, the turntable, the first movable rod, the connecting rod, the second movable rod, the bearing plate, the tank body, the servo motor, the speed reducer, the transmission rod and the stirring blades, phosphorus oxychloride and anhydrous sodium phenate are poured into the tank body; a servo motor is started to drive a transmission rod and stirring blades to stir and fuse the raw materials, when stirring and fusing are conducted in the tank body, a gear motor is started to drive a rotating disc to rotate, through transmission of a first movable rod and a connecting rod, a bearing plate and the tank body are driven to shake left and right in a reciprocating mode, and meanwhile the raw materials in the tank body shake left and right while being stirred; the mixing effect is further improved, full reaction of the diphenyl chlorophosphate raw materials is facilitated, and the efficiency and quality of diphenyl chlorophosphate preparation are improved.

The application discloses a PC / ABS alloy and a preparation method and application thereof, and belongs to the technical field of high polymer engineering plastics; the PC / ABS alloy provided by the application comprises the following components in parts by mass: 63-78 parts of PC, 8-22 parts of ABS, 5-13 parts of titanium white, 1-6 parts of bisphenol A-bis(diphenyl phosphate), 0.5-5.5 parts of indium tin oxide, 0.1-1.2 parts of carbon black and 0-8 parts of an auxiliary agent; the average particle size of the titanium white is 140-310 nm; and the average particle size of the carbon black is less than or equal to 22 nm. The product prepared by the application has excellent light-shielding high-reflecting white effect and good appearance, and excellent laser welding performance; thereby, the product can be widely applied to the preparation of paint-sprayed parts of automobile interiors and exteriors. Moreover, the preparation method of the PC / ABS alloy is simple in operation and is beneficial to actual production.

This invention discloses a method and application for constructing a dual-mode sensor for detecting diphenyl phosphate using smartphone-assisted surface molecular imprinting, belonging to the fields of biochemical analysis, functional nanomaterials, and life science technology. In the synthesis process, the solubility, selectivity, and photoinitiation efficiency of the target analyte during polymerization are optimized, and molecularly imprinted nanozymes (MIPs) for diphenyl phosphate are rapidly prepared using molecular imprinting technology. In the detection process, the peroxidase-like activity of Fe,N-CDs catalyzes the colorimetric reaction between H₂O₂ and 3,3,5,5-tetramethylbenzidine (TMB), and the internal filtering effect of oxTMB suppresses the fluorescence signal. Combined with a smartphone, dual-signal cross-validation is achieved, constructing a colorimetric-fluorescence sensor for detecting diphenyl phosphate. This sensor exhibits specific recognition selectivity and binding affinity for diphenyl phosphate, is simple to operate, and low in cost. It can achieve sensitive detection of diphenyl phosphate over a wide linear range, with a detection limit as low as 16 pg / mL, making it suitable for on-site analysis of trace DPH in complex aquatic environments.

The invention provides a positive pole piece, a secondary battery and an electronic device, the positive pole piece comprises a positive current collector and a positive material layer located on at least one surface of the positive current collector, the positive material layer comprises a positive active material and a first compound, the first compound comprises at least one of vinyl phosphate, allyl phosphate, vinylene phosphate, diallyl phosphate, styrene phosphate, diphenyl phosphate or stilbene phosphate, and an infrared spectrogram of the positive electrode material layer has infrared characteristic peaks at any two of 1150cm <-1 > + / -10cm <-1 >, 1085cm <-1 > + / -10cm <-1 >, 1600cm <-1 > + / -10cm <-1 >, 1640cm <-1 > + / -10cm <-1 > or 1500cm <-1 > + / -10cm <-1 >. Through the arrangement, the high-temperature cycle performance and the thermal safety performance of the secondary battery can be improved, and the low-temperature performance and the impedance performance are both considered.

The invention relates to a preparation method of solid bisphenol A-bis (diphenyl phosphate), which comprises the following steps: (1) carrying out esterification reaction on phosphorus oxychloride and bisphenol A in the presence of a catalyst; (2) adding phenol, and carrying out an end-capping reaction to obtain liquid bisphenol A-bis (diphenyl phosphate); and (3) dissolving the liquid bisphenol A-bis (diphenyl phosphate) in ethanol, freezing, and freeze-drying in vacuum to obtain the solid bisphenol A-bis (diphenyl phosphate). The solid bisphenol A-bis (diphenyl phosphate) obtained by the preparation method disclosed by the invention is convenient to store, has better performance in a flame retardant test, and can improve the mechanical properties of materials.

The invention discloses an imidazolyl lipid assembly as well as a preparation method and application thereof, and relates to the technical field of biomedical materials. The preparation method comprises the following steps: mixing diphenyl phosphate, alcohol and pyridine, and heating for reaction to obtain alkyl phosphate; mixing N, N-diethylethylenediamine, 5-imidazole formaldehyde and a solvent, carrying out a heating reaction in a protective atmosphere, then adding the alkyl phosphate, and continuing the heating reaction to obtain an imidazolyl lipid molecule; dissolving the imidazolyl lipid molecules in an organic solvent to obtain a mother solution; the imidazolyl lipid assembly is obtained from the mother liquor through a film hydration method. The imidazole-based lipid assembly constructed by the invention can utilize the imidazole group to destroy the normal structure of bacteria under the condition of no antibiotic load, and utilizes the catalytic action of the imidazole group to complete the destroy of a biological membrane matrix and an inflammation activation medium, so that the synergism of antibiosis and anti-inflammation is realized, and the imidazole-based lipid assembly has the effect of buffering local acidic pH.

This invention relates to the field of EPDM rubber technology, and discloses a modified graphene-reinforced EPDM rubber composite material and its preparation method, comprising 100 parts by weight of EPDM rubber, 1-1.4 parts by weight of antioxidant, 2-3 parts by weight of sulfur, 1-1.5 parts by weight of accelerator, 0.5-5 parts by weight of flame-retardant modified graphene, and 0.15-2 parts by weight of compatibilizer ethylene-vinyl acetate copolymer. The ethylene-vinyl acetate copolymer of this invention can act as a compatibilizer, enhancing the compatibility between the flame-retardant modified graphene and EPDM rubber, allowing graphene to play a better reinforcing role and significantly improving the material's hardness and other mechanical properties. The flame-retardant modified graphene contains a large number of diphenyl bisphosphate flame-retardant groups, acting as a phosphorus-containing flame retardant, giving the composite material better flame-retardant properties and exhibiting a higher limiting oxygen index.

The invention relates to the technical field of recycled asphalt mixtures, and particularly discloses a recycled asphalt mixture with good durability and a preparation method thereof. The invention discloses a recycled asphalt mixture with good durability. The recycled asphalt mixture is prepared from 60-80 parts of a waste asphalt mixture reclaimed material, 4-7 parts of new asphalt, 15-18 parts of a new aggregate, 2-5 parts of fibers, 3-7 parts of a regenerant and 2-5 parts of filler, wherein the regenerant is prepared from aromatic hydrocarbon oil, triethylene glycol di-2-ethylhexoate, 2-ethylhexyl diphenyl phosphate, dioctyl terephthalate, epoxidized soybean oil, dipropylene glycol methyl ether acetate, polymethylene polyphenyl polyisocyanate, oleic acid hydroxyethyl imidazoline, 0 erucyl amide and barium petroleum sulfonate. The recycled asphalt mixture provided by the invention can effectively resist generation of diseases such as ruts and cracks, the service life of a road is remarkably prolonged, and the maintenance cost of the road is reduced.

The present invention relates to a regeneration processing method for a degradable high polymer material, and a use, comprising the following steps: in a system in which an organic non-metallic catalyst and an aqueous solvent are present, performing degradation processing on a degradable high polymer material, to obtain a degradation product, the degradable high polymer material comprising one or more of a polyester material and a polycarbonate material, and the organic non-metallic catalyst being one or more selected from among a diphenyl phosphate, a binaphthyl phosphate and an organic base.

The invention relates to the technical field of petroleum and natural gas, in particular to a novel temporary plugging agent for fracture acidizing and a preparation method of the novel temporary plugging agent. The temporary plugging agent comprises the following raw materials: a PLGA substrate, a degradation accelerator, a physical foaming agent and a foaming aid, the degradation accelerator is diphenyl phosphate, the physical foaming agent comprises one of CO2, N2 and hydrocarbon, and the foaming aid is one or more of a nucleating agent, a foam stabilizer and a lubricant. According to the method, the PLGA substrate is prepared through polymerization reaction, and then the degradation accelerator, the physical foaming agent and the foaming promoter are added for foaming. The temporary plugging agent can be rapidly degraded, and the weight loss ratio within 48 hours is larger than or equal to 95%; the plugging agent has high plugging strength and low density, the density range is 0.9-1.1 g / cm < 3 >, the plugging agent can be uniformly dispersed in a fracturing fluid, can suspend for a long time and the like, and the purpose of improving the migration effect is achieved.

This invention relates to a method for preparing and applying a flame-retardant polyurethane elastomer. The flame-retardant polyurethane elastomer incorporates a network structure, benzene rings, diphenyl phosphate, and silicon-oxygen bonds, increasing the degree of crosslinking and improving mechanical and self-extinguishing properties. Furthermore, the rigid triazine ring structural units effectively enhance the interactions between molecular chains, forming reinforced hard-segment microregions; while the flexible siloxane chains, with their low surface energy, promote microphase separation. This synergistic effect gives the flame-retardant polyurethane elastomer excellent overall performance. The chain extender contains abundant nitrogen and silicon dual flame-retardant elements, which can release non-flammable gases and form a dense silicate layer during combustion, endowing the material with good self-extinguishing ability. The flame-retardant polyurethane elastomer of this invention has excellent recyclability and self-extinguishing properties, can be applied in encapsulation materials, and is environmentally friendly.

This invention provides a phosphorus-silicon synergistic flame-retardant coolant for immersion liquid cooling and its preparation method, belonging to the field of thermal safety technology for energy storage batteries. The preparation method of the phosphorus-silicon synergistic flame-retardant coolant for immersion liquid cooling includes adding diphenyl phosphate, allyl alcohol, a condensing agent, and an esterification catalyst to a reaction vessel under an inert atmosphere to carry out an esterification reaction, obtaining the intermediate allyl diphenyl phosphate; subsequently, adding 1,1,3,3-tetramethyldisiloxane and a platinum catalyst to the reaction system to carry out a hydrosilylation reaction; after the reaction, purification treatment is performed to obtain a siloxane-bridged phosphate; the obtained siloxane-bridged phosphate is added to a base mineral insulating oil, and a high-efficiency antioxidant is added, followed by uniform mixing to obtain the phosphorus-silicon synergistic flame-retardant coolant. This method can solve the problems of insufficient oxidation stability, easy increase in acid value, and difficulty in simultaneously achieving flame-retardant efficiency and long-term stability in existing coolants under long-term high-temperature operation.

The invention discloses a resin material for 3D printing and a preparation method thereof, and relates to the technical field of photosensitive resin materials. When the resin material for 3D printing is prepared, 3-isocyanate propyl methyl dimethoxy silane is blocked by p-nitrophenol, so that blocked 3-isocyanate propyl methyl dimethoxy silane is prepared; the preparation method comprises the following steps: carrying out condensation on blocked 3-isocyanate group propyl methyl dimethoxy silane, 3-mercaptopropyl methyl dimethoxy silane and hexamethyldisiloxane, so as to prepare blocked isocyanate group mercapto silicone oil; the preparation method comprises the following steps: loading a resorcinol bis (diphenyl phosphate) flame retardant on glass flakes modified by silane to prepare flame-retardant modified glass flakes; the preparation method comprises the following steps: reacting epoxy acrylate, blocked isocyanate sulfydryl silicone oil, acryloyl morpholine and a photoinitiator to prepare photosensitive resin, and compounding the photosensitive resin with flame-retardant modified glass flakes to prepare the resin material for 3D printing. The prepared resin has high mechanical property, flame retardant property and thermal stability.

The invention belongs to the technical field of high polymer materials. The invention relates to plastic, in particular to flame-retardant modified plastic and a preparation method thereof. The product provided by the invention comprises the following raw materials in parts by weight: 80-85 parts of homo-polypropylene resin, 6-8 parts of polyvinylidene fluoride, 2-4 parts of nano aluminum fluoride, 2-3 parts of an organic flame retardant and 0.3-0.5 part of an antioxidant. The mass of the maleic anhydride grafted polypropylene is 8-10% of that of the polyvinylidene fluoride; wherein the organic flame retardant is selected from any one of triphenyl phosphate, resorcinol bis (diphenyl phosphate) and methylated melamine resin; the surface of the nano aluminum fluoride is coated with a silane coupling agent, when the silane coupling agent is coated, the dosage of the silane coupling agent is 0.6-0.8% of the mass of the nano aluminum fluoride, and the specific surface area of the nano aluminum fluoride is 45-50 m < 2 > / g; the specific surface area is obtained by testing according to a BET nitrogen adsorption method.

In order to improve the high-temperature durability and safety of the lithium manganese iron phosphate battery, the invention provides the lithium manganese iron phosphate battery electrolyte and the lithium manganese iron phosphate battery, the electrolyte comprises an organic solvent, a lithium salt and an additive, and the additive comprises N, N-dimethyl sulfonamide and diphenyl phosphate. N, N-dimethyl sulfonamide and diphenyl phosphite are added into the electrolyte, and the N, N-dimethyl sulfonamide and diphenyl phosphite cooperate to inhibit dissolution of manganese ions in the lithium manganese iron phosphate battery, relieve swelling of the battery at high temperature, improve the high-temperature capacity retention ratio of the battery and prolong the high-temperature cycle life of the battery, so that the market competitiveness of the lithium manganese iron phosphate battery is improved; and a more reliable and efficient energy solution is provided for electric automobiles, energy storage systems and consumer electronics.

The invention belongs to the technical field of high-insulating-strength polyimide varnish materials, and particularly relates to polyamide acid-polyimide varnish, a preparation method and application in preparation of a polyimide film. The preparation method comprises the following steps: S1, adding first diamine and dianhydride into a polar solvent to carry out condensation polymerization, and then adding an anhydride end-capping reagent to slow down a decomposition reaction so as to prepare first polyamide acid; s2, adding second diamine and an auxiliary agent into the stable polyamic acid for reaction to obtain second polyamic acid; and S3, adding a dehydrating agent and a catalyst into the low-viscosity polyimide, and carrying out chemical reaction to obtain the polyamide acid-polyimide varnish. According to the invention, resorcinol bis (diphenyl phosphate) is used as an auxiliary agent in polyamide acid, and the molecular structure of polyamide acid and the interaction force between chains are influenced through the interaction between the resorcinol bis (diphenyl phosphate) and the molecular chains of polyamide acid, so that the viscosity of the polyamide acid is influenced.

The application belongs to the technical field of electrician sleeves, and discloses a PVC electrician sleeve and a preparation method and application thereof, the PVC electrician sleeve comprises the following raw materials in parts by weight: 100 parts of PVC resin, 6-10 parts of toughening agent, 15-25 parts of flame retardant, 1-3 parts of heat stabilizer, 0.5-1.5 parts of lubricant and 0.1-0.8 parts of antioxidant; wherein the toughening agent comprises a core, a first shell layer formed on the surface of the core and a second shell layer formed on the surface of the first shell layer, and the core is a conjugated diene-(meth)acrylate copolymer; the flame retardant comprises an organic silicon flame retardant and bisphenol A bis(diphenyl phosphate). The PVC electrician sleeve of the application realizes the balance of high toughness, high transparency and flame retardant performance through the synergistic effect of PVC resin, a specific toughening agent system and a specific flame retardant system, and solves the contradiction between the toughness improvement and the transparency reduction of the traditional product.

The invention relates to the technical field of engineering plastic alloys, in particular to a preparation method of a flame-retardant PC / ABS (polycarbonate / acrylonitrile butadiene styrene) composite material for automobiles, and the flame-retardant PC / ABS composite material comprises the following components: PC, ABS, LCP (liquid crystal polymer), nanofiller, a modified flame retardant, a flexibilizer, an antioxidant, a lubricant, a deodorant, an anti-dripping agent and a smoke suppressant. The preparation method of the flame-retardant PC / ABS composite material comprises the following steps: S1, mixing step by step; and S2, extruding. The modified hexaphenoxy cyclotriphosphazene and the bisphenol A-bis (diphenyl phosphate) are compounded and cooperate with the loading effect of the nano silicon dioxide, so that the damp-heat aging resistance and the ultraviolet aging resistance are improved, the tensile strength and the impact strength of the PC / ABS composite material are enhanced, and the PC / ABS composite material is suitable for the field of automobile parts.

The present application relates to the technical field of hydraulic oil, and discloses a fire-retardant hydraulic oil, wherein the hydraulic oil comprises base oil, antioxidant, copper corrosion inhibitor, rust inhibitor, antifoaming agent, demulsifier and hydrolysis inhibitor; wherein the base oil is selected from at least one of mixture A, mixture B and mixture C; wherein the mixture A is selected from a compound as shown in general formula (I): wherein X is selected from any one of, and the mixture B and the mixture C both comprise (4-tert-butylphenyl) diphenyl phosphate, bis(4-tert-butylphenyl) phenyl phosphate, tris(4-tert-butylphenyl) phosphate and triphenyl phosphate. The hydraulic oil has excellent antioxidant, corrosion / rust resistance, emulsion resistance, hydrolysis resistance, antifoaming performance and accelerated aging resistance, slows down the deterioration speed of triaryl phosphate fire-retardant hydraulic oil, and prolongs the service life of the fire-retardant oil.