152results about How to "Preparation raw materials are cheap and easy to obtain" patented technology

The present invention provides an iron-based catalyst for low-carbon olefin production through CO2 hydrogenation, wherein the main active component of the catalyst is Fe3O4, the auxiliary agent is added or is not added, and is an oxide, the content of the auxiliary agent accounts for 0-30% of the total mass of the catalyst, and the auxiliary agent is one or more than two selected from the oxide of Si, Al, Mn, K, Cu, Na, Zr, V, Zn and Ce. The present invention further provides a preparation method and applications of the catalyst. According to the present invention, the catalyst has the following beneficial effects that 1) the particles have characteristics of regular spherical shape, uniform spatial distribution, and narrow size distribution; 2) the raw materials are inexpensive and easy to obtain, and the preparation method has characteristics of simpleness and low cost, and is suitable for industrial production; 3) the catalyst has characteristics of high mechanical strength, good wear resistance and compression resistance, and is suitable for the fixed bed, the fluidized bed and the slurry bed; 4) the CO2 hydrogenation activity and the low-carbon olefin selectivity are high, the single-pass conversion rate can achieve more than 40%, the methane selectivity in the hydrocarbon product is lower than 15%, the low-carbon olefin selectivity is higher than 40%, the alkene / alkane ratio (O / P) is 2-12, and the yield of the low-carbon olefin can achieve 10-60 g / m<3> (CO2+H2).

The invention provides an aqueous binding agent which has washing resistance and is used for electrochemical aluminium hot stamping, and a preparation method thereof, belonging to a binding agent composition. The aqueous binding agent comprises 40-80 parts by weight of acrylic resin emulsion (with the solid content of 40-55%), 20-40 parts by weight of acrylic resin powder and 5-20 parts by weight of ethylene-vinyl acetate copolymer (EVA) emulsion (with the solid content of 40-60%). The binding agent does not contain organic volatile component, is harmless for the human body, is an environment-friendly electrochemical aluminium hot stamping binding agent, and is especially suitable for fabric which is needed to be printed and frequently washed.

The invention provides an iron-based catalyst for preparation of low carbon olefin from synthetic gas. The catalyst contains Fe3O4 as a main active component, and also contains one or two or above assistant M for modification, and M is selected from Si, Al, Mn, K, Cu, Na, Zr, V and Zn. The content of oxide of the assistant in the catalyst is 0-30wt%. The catalyst has the following advantages: 1, particles of the catalyst have regular spherical morphology, uniform space distribution, narrow dimension distribution, and average particle size of 30nm; 2, the catalyst has the characteristics of cheap and easily available raw materials, simple preparation method, low cost, and suitableness for industrial production; 3, the catalyst has good mechanical strength, wear resistance and compression resistance, and is suitable for being applied in fixed beds, fluidized beds and slurry beds; and 4, the catalyst has high Fischer-Tropsch synthesis activity and high low-carbon olefin selectivity, the single-pass conversion rate can reach above 95%, the methane selectivity is lower than 15%, the olefin / paraffin ratio (O / P) is 2-6, and the low-carbon olefin yield can reach 40-100g / m<3>(CO+H2).

The invention relates to a preparation method of prothioconazole. The preparation method comprises that a compound IV undergoes a reaction at 20 to 120 DEG C in the presence of an oxidizing agent and a solvent, and after the reaction, the product is treated to form prothioconazole. The preparation method has mild reaction conditions, utilizes cheap and easily available raw materials, has simple processes, is environmentally friendly and clean in regents and reaction processes, greatly reduces three wastes, is suitable for industrial production, and realizes a high yield of a final product and high content.

The invention discloses a deoxidizing and drying agent which comprises the following components in parts by weight: 10-60 parts of bentonite, 10-40 parts of attapulgite, 1-20 parts of bamboo charcoal powder, 1-20 parts of fine iron powder, 1-10 parts of refined manganese dioxide, 1-10 parts of quicklime, 0.01-1 part of calcium chloride and 0.01-1 part of calcium propionate. The invention also discloses a preparation method of the deoxidizing and drying agent. The deoxidizing and drying agent can be widely used in the fields of medical health-care products, instruments and equipment, food, feed and other industries, and has the all-inclusive deoxidizing and drying effects of removing heavy metals, harmful or smelly gas, bacteria and the like; and the deoxidizing and drying agent has the advantages of cheap and accessible raw materials, simple preparation technique and long effective period, has very broad market prospects and is suitable for large-scale popularization and application.

The invention discloses a catalyst for production of methanol by CO2 hydrogenation. The invention is intended to overcome the problems of low CO2 conversion ratio and low methanol selectivity in a CO2 hydrogenation methanol synthesis process and studies a catalyst with Cu, ZnO, ZrO2 and graphene oxide (GO) as main components. The content, calculated in mass ratio, namely GO / Cu-ZnO-ZrO2, is (0.04-0.16) / 1, and the catalyst is prepared by adopting a parallel flow coprecipitation method. The preparation process is simple, conditions are easy to control, and repeatability is good. The catalyst disclosed by the invention has the advantages of easily adjustable and variable composition and structure, larger specific surface area, dispersed active components and good catalytic activity. In a CO2 hydrogenation methanol synthesis reaction, the CO2 conversion ratio and methanol selectivity are improved, CO2 emission reduction is achieved, and the catalyst is significant for solving increasingly serious environmental problems.

The invention discloses a special coloring agent of a diammonium phosphate compound fertilizer, comprising the following constituents: 40-50 parts of humic acid salt, 0.1-3 parts of carbon soot, 2-4 parts of acid black, 1-2 parts of acid brilliant scarlet, 0.2-1 part of sodium hexametaphosphate, and 40-56.7 parts of water by weight parts; the preparation process is that: the material is prepared by weight parts, water is added in a vertical round reaction tank, and then the humic acid salt, the carbon soot, the acid black and the acid brilliant scarlet are added and are stirred uniformly, andthen sodium hexametaphosphate is added, the mixture is stirred continuously and uniformly, so as to obtain the special coloring agent of the diammonium phosphate compound fertilizer; the invention solves the problems that the diammonium phosphate particles produced under an acid slurry condition are easy to decolorize and the chromaticity is unstable; the special coloring agent of the diammonium phosphate compound fertilizer is green and environmental-protection, has no pollution and is beneficial to the growth of crops; the product is in a liquid state and transported closely, and has convenient usage; the raw material is cheap and easy to obtain, the cost is low and the economic benefit is good.

The invention belongs to the technical fields of catalysts and xylosic acid, and discloses a modified carbon nitride photocatalyst, a preparation method thereof, and a method for synthesizing xylosicacid by photocatalytic oxidation of xylose. The preparation method of the photocatalyst comprises the following steps: (1) uniformly mixing a nitrogen-containing organic matter precursor with a low-melting point chlorine-containing salt compound in a solvent, and removing the solvent to obtain a solid product; and (2) performing calcining, acid treatment, washing and drying on the solid product toobtain the modified carbon nitride photocatalyst. The modified carbon nitride photocatalyst is used for photocatalytic oxidation of xylose to synthesize xylosic acid. The method for synthesizing xylosic acid is characterized in that the photocatalytic oxidation of the xylose is carried out in an alkaline solution under an illuminating condition in the presence of the modified carbon nitride photocatalyst to obtain the xylosic acid. The photocatalyst has the advantages of good thermal stability, high catalytic activity and good recyclability. The method for successfully synthesizing xylosic acid by photocatalytic oxidation of xylose through using the photocatalyst has the advantages of good safety, non-toxicity, quick effect, low energy consumption, high yield of the xylosic acid, and easiness in realizing industrial production.

The invention relates to a cellulose water retention agent and a preparation method thereof, belonging to the field of high polymer materials. The preparation method comprises the following steps: taking plant straws, adding water, microbes and urea, reacting, regulating the pH value to 8-11, and reacting at 10-35 DEG C for 0.5-4 hours; after the reaction finishes, filtering to obtain a fiber microcrystal; taking the fiber microcrystal, adding water, acrylic acid, an alkaline matter, an initiator and a crosslinking agent, uniformly stirring, and reacting at 10-35 DEG C for 1-6 hours to obtain a jelly polymer; and heating the jelly polymer at 40-80 DEG C for 0.5-3 hours, and drying to obtain the fiber water retention agent. The water absorption factor of the fiber water retention agent for distilled water is up to 500-850 g / g, and the water absorption factor for 0.9% brine is up to 50-100 g / g.

The present invention discloses a catalytic combustion active ingredient highly-dispersed catalyst and a preparation method thereof. The catalyst M-CeO2 / SiO2 comprises noble metal M, aid CeO2, and carrier SiO2. The catalyst M-CeO2 / SiO2 is prepared as follows: an oily dispersing agent is added into a mixed solution containing a concentration of a noble metal precursor and cerium nitrate, then the carrier SiO2 is added, and equivalent-volume impregnation and aging is performed for more than 6 hours; and after high-temperature treatment by heating or low temperature plasma treatment in an air atmosphere under a certain airspeed for 0.5 to 5 hours, the mixture is placed in hydrogen atmosphere under a certain airspeed for high-temperature treatment by heating or low temperature plasma treatment for 0.5 to 5 hours. The preparation process is simple, the catalyst M-CeO2 / SiO2 is prepared by adding of the oily dispersing agent and low temperature plasma treatment, and the catalyst M-CeO2 / SiO2 has high catalytic activity of catalytic combustion reaction of volatile organic compounds at low temperature. The whole process is low in energy consumption, and the removal rate of volatile organic compounds at low temperature can reach more than 95%.

The invention provides a graphite phase carbon nitride-graphene compound-modified fluorocarbon finish paint which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 4:1; the component A is prepared from the following raw materials in parts by weight: 40-70 parts of fluorocarbon resin, 30-40 parts of an organic solvent, 0.5-25 parts of g-C3N4 / rGO, 0.1-0.5 part of an antifoaming agent and 0.1-2 parts of a flatting agent; and the component B is a blocked isocyanate curing agent. Graphite phase carbon nitride in a coating can be subjected to photocatalytic reaction under visible light, so that the self-cleaning effect of the coating is achieved. Through addition of graphene, fast separation of a photoelectric electron-hole pair can be achieved, the photocatalytic efficiency and the self-cleaning capability are improved, and the heat dissipation performance of the coating is greatly improved by the high heat conductivity coefficient of the graphene. The graphite phase carbon nitride-graphene compound-modified fluorocarbon finish paint is simple in step, convenient to operate and high in practicability.

The invention relates to thermo-sensitive hydrogel used for cartilage repair and a preparation method and application thereof. The thermo-sensitive hydrogel used for cartilage repair is prepared froman agarose aqueous solution, a gelatin aqueous solution, a sodium hyaluronate aqueous solution and DBM-RGD particles. The preparation method of the thermo-sensitive hydrogel used for cartilage repaircomprises the steps that 1, the agarose aqueous solution is prepared; 2, the gelatin aqueous solution is prepared; 3, the sodium hyaluronate aqueous solution is prepared; 4, DBM particles are prepared; 5, the DBM-RGD particles are prepared; 6, 10 ml of the agarose aqueous solution obtained in the step 1, 10 ml of the gelatin aqueous solution obtained in the step 2, 4 ml of the sodium hyaluronate aqueous solution obtained in the step 3 and 0.24-1.2 g of the DBM-RGD particles obtained in the step 5 are taken, mixed, stirred evenly by a glass rod, and placed in a 37-DEG C constant-temperature water bath kettle after being mixed evenly to form gel, so that the thermo-sensitive hydrogel used for cartilage repair is obtained.

The invention relates to a preparation method of a prothioconazole intermediate. The method sequentially comprises the following steps: enabling a compound I and a compound II to react at the temperature of 20-120 DEG C in presence of a solvent; after the reaction is finished, treating to obtain a compound III; enabling the compound III to react with XOH, formaldehyde, YSCN and sodium hydrogen sulfate at the temperature of 10-80 DEG C in presence of a solvent so as to obtain a compound IV 2-(1-chloro-cyclopropyl-1-yl)-1-(2-chlorphenyl)-2-hydroxyl-3-(1,2,4-triazolidine-5-thioketone-1-yl)-propane, namely, the prothioconazole intermediate. Compared with the reported methods, the preparation method provided by the invention not only enables the intermediate to be more stable, but also reduces the amount of reagents, simplifies the operation steps, avoids the occurrence of side effects, increases the reaction efficiency and is less in pollution caused by the three wastes, thus being environmentally friendly and suitable for industrial production.

The invention belongs to the technical field of chemical industry and particularly discloses a phase stabilizer and methanol gasoline added with the phase stabilizer. The phase stabilizer is alkyleneoxide compounds. The methanol gasoline added with the phase stabilizer consists of 30 to 70 mass percent of gasoline, 20 to 60 mass percent of methanol, 5 to 15 mass percent of phase stabilizer, 0.5 to 5 mass percent of preservative and 0.5 to 5 mass percent of cleaning agent. According to the methanol gasoline, the adding amount of the methanol is 20 to 60 percent; and the problems that the methanol gasoline is easy to demix after absorbing water and the methanol and the gasoline are separated at low temperature are effectively solved while the proportion of the methanol is improved as far as possible.

The invention discloses a Sn-Zr / SBA-15 mesoporous molecular sieve catalyst, and a preparation method and application thereof. The Sn-Zr / SBA-15 mesoporous molecular sieve catalyst is prepared from a polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, stannic chloride pentahydrate, zirconium oxychloride octahydrate and ethyl orthosilicate through hydrothermal crystallization consisting of successive step-by-step hydrolysis and mixing under a weakly acidic condition. The prepared Sn-Zr / SBA-15 mesoporous molecular sieve catalyst is used for catalyzing alkylation of phenol and formaldehyde for synthesis of bisphenol F and has high catalytic activity. Sn is effectively doped into SBA-15 without destroying the mesoporous structure of the SBA-15; SnO2 aggregate is prevented from formation and blocking of the channels of the molecular sieve; a weakly acidic aqueous solution solvent is used for synthesis, so the method is green, environment-friendly and low in preparation cost; and the catalyst is easy to separate, recover and reuse.

The invention discloses electrolytic liquor, electrolyte, polymer electrolyte as well as a preparation method and application thereof. A method for preparing LiPBFO electrolytic liquor in the invention comprises the following steps: reacting lithium phosphate, lithium fluoride and boron trifluoride gas in an organic solvent under the protection of protective gases, thereby obtaining the product, wherein a mass ratio of lithium fluoride to lithium phosphate is (0.01:1)is similar to(5:1), and a mass ratio of boron trifluoride to lithium phosphate is (0.8:1)is similar to (13:1). The electrolyte disclosed by the invention is high in conductivity and low in price, and the preparation method is simple.

The invention discloses a process for preparing cyclohexanone and cyclohexanol by cyclohexane selective oxidation. The process includes steps of adding cyclohexane, a solvent, a trace initiator and a solid catalyst into a reactor and filling oxygen with high pressure of 0.8-2.5Mpa to react at the temperature of 90-140 DEG C for 2-24 hours so as to obtain reaction products. The solvent can be any one of acetic acid, acetonitrile,acetone and methanol; cyclohexane is taken as the initiator; and carbon materials graphitized partially are taken as the solid catalyst. The solid catalyst is prepared by steps of mixing phenols with glucose or saccharose or furfural, adding Fe3+ or Co2 or Ni2+ salt, performing hydrothermal carbonization at the temperature of 160-200 DEG C, and removing residual metal by acid dissolving after high-temperature carbonization (at the temperature equal to or higher than 800 DEG C). The overall selectivity of cyclohexanone and cyclohexanol can be 57%, the conversion rate of cyclohexane can be 55%, the catalyst in reaction can be recovered, and accordingly the process is environment-friendly and is an easy and convenient method for preparing cyclohexanone and cyclohexanol. Further, pure oxygen is utilized as an oxidant, which is cheaper and much environment-friendly than hydrogen peroxide serving as a conventional oxidant.

The invention provides a micro-emulsion shale inhibitor and a preparing method thereof. The micro-emulsion shale inhibitor is prepared by compounding a surface active agent tetradecyltriethylammoniumbromide, an oil phase, a water phase and a cosurfactant alcohol, wherein the volume ratio of the oil phase to the water phase is (8-9):(2-1); the mass ratio of the surface active agent tetradecyltriethylammonium bromide to the cosurfactant is (7-8.5):(3-1.5); the ratio of the total mass of the surface active agent tetradecyltriethylammonium bromide and the cosurfactant to the total mass of the oilphase and the water phase is (0.8-1.2):(9.2-8.8). The micro-emulsion shale inhibitor contains the surface active agent quaternary ammonium salt and the oil phase, the micro-emulsion shale inhibitor contends for the active centers of the clay surface through the cooperative adsorption effect of hydroxy and the quaternary ammonium salt and intergranular water of shale, and hydrophobic chains exclude the intergranular water, so that a good inhibition effect is achieved. The oil phase can block tiny formation fractures, certain blocking effect is achieved, and the inhibitor has the advantages ofbeing good in inhibitive ability, resistant to temperature and free of toxicity.

The invention discloses a two-dimensional composite photocatalyst namely h-BN / Ti3C2 / TiO2, and a preparation method and an application thereof. The catalyst has a two-dimensional composite structure, wherein wafer-shaped h-BN is loaded on a Ti3C2 nanosheet; meanwhile, a TiO2 particle obtained by oxidation of Ti3C2 is located between the wafer-shaped h-BN and the Ti3C2 nanosheet. The preparation method for the catalyst provided by the invention is simple and highly-efficient and has easily-controllable reaction conditions. The catalyst provided by the invention has the advantages of high catalytic activity, good thermal stability, recyclability and the like, realizes simple and highly-efficient catalytic synthesis of xylosic acid, and has good application prospect.

The invention discloses preparation of a modified carbon nitride photocatalyst and application of the modified carbon nitride photocatalyst in synthesis of lactic acid by photocatalytic oxidation of glucose, and belongs to the technical field of catalysis. The preparation method of the catalyst comprises the following steps: uniformly stirring a nitrogen-containing compound precursor and a boric acid-acetic acid solution, calcining, and further calcining to obtain the in-situ boron and oxygen heteroatom doped modified carbon nitride material. The application process of the catalyst in photocatalytic oxidation of glucose to synthesize lactic acid comprises the following steps: mixing the modified carbon nitride photocatalyst, glucose and an alkaline solution, and carrying out a photocatalytic reaction; and filtering to remove the catalyst, and determining the lactic acid content of the filtrate through a high performance liquid chromatograph. The method for preparing the catalyst has good universality, the used catalyst has the advantages of being high in catalytic activity, good in stability, capable of being recycled and the like, glucose is simply and efficiently catalyzed to synthesize lactic acid, and good application prospects are achieved.

The invention belongs to the technical field of light-emitting materials and discloses a Mn<4+> doping red fluorescent material for a white light LED and a preparation method of the Mn<4+> doping red fluorescent material. The method comprises the following steps: 1, preparing K<2>MnF<6> powder; 2, adding the K<2>MnF<6> powder and aluminum source powder into an HF aqueous solution, and conducting stirring till the powder is dissolved completely; then adding sodium source powder, continuing stirring, cooling the mixture quickly, leaving the mixture standing still, and conducting centrifugation, washing and drying, so that the red fluorescent material is obtained. The chemical composition of the material is Na<3>AlF<6>: xMn<4+>, wherein x ranges from 0.5% to 30%. According to the Mn<4+> doping red fluorescent material and the preparation method thereof, raw materials are easy to obtain, and cost is low; the preparation method is simple, the temperature is low, the amount of used hydrofluoric acid is small, the condition is controllable, and the Mn<4+> doping red fluorescent material and the preparation method are suitable for industrialized mass production; meanwhile, the red fluorescent material has good fluorescence thermal stability.

The invention relates to a method for removing treatment of antibiotic sulfacetamide by means of activated carbon materials. The method comprises the steps that an activated carbon and hydrogen peroxide solution is added to a sulfacetamide solution, wherein the ration of sulfacetamide to activated carbon to hydrogen peroxide is 0.3875 micromole to 6-7.5 mg to 8-12 micromoles; then the mixture is treated at room temperature for 20-100 min, and the removing treatment of the antibiotic sulfacetamide is completed. According to the method for removing treatment of the antibiotic sulfacetamide by means of the activated carbon materials, the activated carbon materials are adopted, the synergistic catalytic action can be achieved with the hydrogen peroxide, and the antibiotic sulfacetamide is removed; in the removing treatment process, the problems such as secondary pollution caused by a chemical method and high cost can be avoided, and operation is easy. According to the treatment method, only the activated carbon materials need to be added to the sulfacetamide solution at the room temperature, and the industrial treatment steps are greatly simplified; meanwhile, the activated carbon materials are convenient to recycle, suitable for industrial application and especially suitable for the industrial removing treatment of the antibiotic sulfacetamide.

The invention discloses a preparation method of 1,8-dinitro-9-fluorenone (DFO). The preparation method of DFO comprises the following steps that 2-methoxy-4-nitroaniline is synthesized from 2-methoxyaniline; the 2-methoxy-4-nitroaniline is reduced into 2-methoxy-p-phenylenediamine sulfate; the 2-methoxy-p-phenylenediamine sulfate undergoes Skraup quinoline synthesis twice to produce 5(6)-methoxy-4,7-naphthisodiazine; the 5(6)-methoxy-4,7-naphthisodiazine undergoes an oxidation reaction to produce 4,7-naphthisodiazine-5,6-diketone; and the 4,7-naphthisodiazine-5,6-diketone is circulated in an alkaline aqueous solution to produce a product DFO, wherein an overall yield of the five DFO synthesis steps is 26.3%. The preparation method of DFO simplifies a preparation process and effectively reduces a production cost. Through the preparation method of DFO, DFO output can satisfy domestic demands on DFO.

The invention discloses a method for removing tetracycline in a water body by adsorption and catalytic oxidation of Cu-containing biochar. The invention belongs to the field of sewage treatment in environmental protection. Corn bracts are used as raw materials, and the Cu-containing biochar catalyst is prepared through high-temperature pyrolysis after the raw materials are subjected to dipping ina copper chloride solution and aging . The catalyst can effectively adsorb tetracycline in a water body to achieve removal of tetracycline; meanwhile, the catalyst and a hydrogen peroxide solution canform a heterogeneous Fenton-like system, and hydroxyl radicals (. OH) are generated to degrade tetracycline. Therefore, the purpose of removing tetracycline from the water body can be achieved by utilizing the adsorption synergistic catalytic oxidation effect of the Cu-containing biochar catalyst. The Cu-containing biochar catalyst provided by the invention has the advantages of cheap and easilyavailable preparation raw materials, simple preparation process, high tetracycline removal rate, mild treatment process, no secondary pollution, stable catalyst and recyclability.

The invention particularly discloses a modified corn straw cellulose adsorbent as well as a preparation method and application thereof. A functional component of the modified corn straw cellulose adsorbent is aminated modified cellulose high polymer MCC-g-GMA-DETA. The preparation method comprises the following steps: (1) preparing the corn straw microcrystalline cellulose; (2) carrying out grafting treatment on the corn straw microcrystalline cellulose; and (3) performing amination of the grafted copolymer. The modified corn straw cellulose adsorbent is mainly used for specific adsorption removal of Cu<2+>, Ni<2+> and Cd<2+> in the wastewater treatment process; at room temperature, the maximum adsorption capacities of the adsorbent on three heavy metal ions can reach 196 mg / g, 180 mg / g and 270 mg / g respectively. The adsorbent is high in adsorption rate and can be regenerated and reused for multiple times. The adsorbent has the characteristics of cheap and easily available preparationraw materials, degradability, low toxicity, safety in use, greenness, environmental protection and the like. According to the method, the application field of the corn straw is widened, so that resource efficient utilization of agricultural waste is facilitated.

The invention discloses a size-controllable MXene-coated BSA nano diagnosis and treatment agent and a preparation method thereof. The preparation method comprises the steps that firstly, a MAX-phase Ti3AlC2 material is etched and stripped into a large-size thin-layer MXene material Ti3C2 through a chemical etching and ultrasonic-assisted stripping technology, then the nano size of the Ti3C2 is regulated and controlled through an ultrasonic probe crusher, finally, the Ti3C2 with a certain nano size is wrapped with BSA, the biocompatibility of the nano diagnosis and treatment agent is improved, the MXene coated BSA nano diagnosis and treatment agent with the adjustable particle size in the range of 30-200nm is obtained, not only are the problems that the existing MXene particle size is poor in penetration matching with a tumor site and the biotoxicity is high solved, but also the function of integrating PAI imaging and photothermal therapy diagnosis and treatment in an NIR-II window with deeper penetration depth is achieved, and the response interval of PAI imaging of the Ti3C2 MXene nano diagnosis and treatment agent is widened.

The invention discloses a flame retardant nylon material and a preparation method thereof. The flame retardant nylon material comprises the following raw materials by weight: 200-240 parts of nylon resin, 60-80 parts of a flame retardant, 0.5-3 parts of an antioxidant, 2-6 parts of a compatibilizer, and 1-5 parts of a coupling agent. According to the invention, zinc borate subjected to surfactant modification treatment is added into the material, an original hydrophilic surface of the zinc borate is converted into a hydrophobic surface because of adsorption of surfactant molecules, and the modified zinc borate cooperates with a compatilizer maleic anhydride grafted PE or maleic anhydride grafted PP to guarantee a good disperse state of the zinc borate molecules, thus maximumly playing a flame retardant role. Therefore, the flame retardant nylon material has an excellent flame retardant effect.

The invention relates to the field of microorganisms, in particular to multifunctional streptomyces fradiae and application of the multifunctional streptomyces fradiae as a solid microbial agent. The collection number of the streptomyces fradiae G-1 is CCTCC M 2020250. While preventing and treating soil-borne diseases, the strain can generate active substances such as IAA, cellulase and protease to promote plant growth and soil nutrient utilization, and can degrade phenolic acid plant autotoxic substances to relieve obstacles to continuous cropping of soil. The preparation of the microbial agent adopts a preferable formula and is supplemented with a fermentation process conforming to the growth of strains to obtain the high-activity multifunctional microbial agent. The microbial agent can be combined with straw manuring to promote straw decomposition and can be combined with a commercially available organic fertilizer or farmyard manure to serve as base fertilizer. After application, the ecological balance of the soil is regulated by means of nutrient competition, metabolite regulation and control and the like, the fertility of the soil is enhanced, and the occurrence of soil-borne diseases is reduced. The microbial agent is simple in preparation method, readily available in raw materials, low in production cost, long in shelf life and obvious in disease prevention and yield increase effects.

The invention discloses a preparation method and application of low-ployphosphate ester polyhydric alcohol, which belong to the technical field of high polymer materials, reactive flame retardants, energy conservation and protection, environmentally friendly new processes and building insulation materials. The low-ployphosphate ester polyhydric alcohol is prepared through catalytic reaction by adopting phosphorus pentoxide, water and alkylene oxide as raw materials. According to the preparation method, the raw materials are low in cost and easy to get, the reaction is mild, the process is simple and easy to operate, and the preparation method is easy for industrial production; the target product is used for preparing flame retardant polyurethane foam materials.

The invention discloses preparation of a porous hollow carbon nitride nanotube photocatalyst and application of the porous hollow carbon nitride nanotube photocatalyst in synthesis of lactic acid by photocatalytic oxidation of xylose, and belongs to the technical field of catalysis. The preparation method of the catalyst comprises the following steps: uniformly stirring a nitrogen-containing compound precursor and a hydrochloric acid solution, then carrying out hydrothermal treatment, and calcining the obtained solid to obtain the porous hollow carbon nitride nanotube material. The application process of the catalyst in synthesis of lactic acid through photocatalytic oxidation of xylose comprises the following steps: mixing the porous hollow carbon nitride nanotube photocatalyst, xylose and an alkali solution, and carrying out a photocatalytic reaction; and conducting filtering to remove the catalyst, and measuring the content of lactic acid in filtrate through a high performance liquid chromatograph. The method for preparing the catalyst has good universality, the used catalyst has the advantages of being high in catalytic activity, good in stability, capable of being recycled and the like, xylose is simply and efficiently catalyzed to synthesize lactic acid, and good application prospects are achieved.