125results about How to "Non-toxic and harmless" patented technology

The invention relates to high-conductivity hydrographene conductive ink as well as a preparation method and a composition thereof. The composition of the high-conductivity hydrographene conductive inkis prepared from the following components in parts by mass: 20 to 30 parts of a conductive unit, 15 to 30 parts of a coupling agent, 0.1 to 20 parts of an adjuvant and 50 to 100 parts of water. By the adoption of the composition and the preparation method which are provided by the invention, the sheet resistivity of the prepared high-conductivity hydrographene conductive ink is less than or equalto 20 ohms / square, and the conductive unit content is less than or equal to 30 percent, and the high-conductivity hydrographene conductive ink has the advantages of low conductive unit content, highmechanical property and high conductivity. Meanwhile, water is used as a solvent, so that the high-conductivity hydrographene conductive ink has outstanding environmental protection and safety characteristics of greenness, environmental friendliness, non-toxicity, harmlessness, incombustibility, non-explosivity and the like.

The invention relates to a preparation method of high flame retardant expansible graphite, which comprises the following steps: dissolving the graphite into a mixing solution of perchloric acid and concentrated nitric acid, wherein the dosage of the solution is 100-600% of the mass of the solution; oxidizing the graphite by using solid oxidant of which the dosage is 0.5-50% of the mass of the oxidant to obtain the primary expansible graphite, wherein the temperature of the expansible graphite is 20-80 DEG C, and the reaction time is 20-300min; dissolving tripolycyanamide or the derivants thereof and the solid oxidant into phosphoric acid of which the mass fraction is 85+ / -10% to form a phosphoric acid solution, wherein the dosage of the solid oxidant is 0.5-50% of the mass thereof, and the mass concentration of the tripolycyanamide or the derivants thereof of the formed phosphoric acid solution is 0.02-2g / ml; carrying out reaction of the primary expansible graphite and the phosphoric acid solution at the temperature of 20-80 DEG C for 20-300min to prepare the high flame retardant expansible graphite. The method has the advantages that the tripolycyanamide or the derivants thereof are inserted between the expansible graphite layers, thereby improving the expansibility, start expansion temperature and fire resistance of the expansible graphite, and can be widely used for the flame retardant of multiple materials such as plastic, rubber, paint, foam and the like.

The invention discloses a method for producing a resin emulsion used for water-based metallic paint and a produced resin emulsion thereof. The resin emulsion is prepared by the following raw materials by weight: 0-260 parts of styrene, 40-310 parts of methyl methacrylate, 3.0-5.0 parts of acrylamide, 16.5-23.5 parts of acrylic acid, 182-202 parts of butyl acrylate, 18-38 parts of functional unsaturated monomers, 1.1-2.1 parts of an emulsifier, 5.4-7.4 parts of a phosphorus and double bond-containing polymerizable surfactant, 8-12 parts of organosilicon monomers, and 45-55 parts of a Zn<2+> solution with a mass concentration of 12-16%. The method of the invention employs a core-shell emulsion polymerization technology to make the emulsion has an overall high vitrification temperature and alow film-forming temperature. By adopting a phosphorus and double bond-containing polymerizable surfactant, the water proofness and corrosion resistance of the emulsion are enhanced. By using a dual normal-temperature self-crosslinking technology, a compact netted polymer structure can be formed, so that the emulsion can has good adhesive force, hear resistance, wear resistance, as well as the advantages of energy saving, environmental protection, nontoxicity and harmlessness.

The invention relates to a manufacturing method of a plant resin specimen for teaching. The method comprises the following steps that (1) plant specimens are collected and are subjected to conventional pretreatment; (2) anhydrous silica gel is ground into powder; the powdery anhydrous silica gel and aluminum oxide powder are uniformly mixed according to a certain proportion to obtain mixed drying powder; (3) the plant specimens are put into a drying box, are completely embedded by the obtained mixed drying powder, and are then subjected to drying treatment; (4) the dried and treated plant specimens are taken out from the drying box, the redundant mixed drying power on the surface is cleared away, and then, a 30W ultraviolet lamp is irradiated for 3 to 5 minutes for sterilization inactivation treatment; (5) the treated plant specimens are put into a mold to be subjected to epoxy resin glue embedding; (6) after the epoxy resin glue is solidified, the plant resin specimen is obtained. The specimen manufactured by the method has the characteristics of transparency, sealing, oxidation resistance, long-time color retention, lightweight, portability, no toxicity, no harm and the like; the problem that the existing resin specimen cannot perfectly protect the plant pigment can be solved.

The invention discloses a water-based evaporation drying type gravure ink composition applicable to multiple base materials. The water-based evaporation drying type gravure ink composition applicable to multiple base materials comprises the following components in percentage by weight: 20-60% of an ink linking material, 1-30% of a flaky functional material, 0-30% of an alcohol solvent, 0-10% of auxiliaries, 0-0% of a curing agent and the balance of water. The water-based evaporation drying type gravure ink composition applicable to multiple base materials contains no phenyl ketone and no ester solvent, has the characteristics of safety, no toxicity, no harm, noninflammability, non-explosiveness, nearly zero VOC and the like and is beneficial to human health and environmental safety, and defects of water-based ink composition in onboard stability and ink drying property are overcome; and by selecting resin of a specific structure, the problems of the water-based ink composition in the aspects of binding strength on a base material and printing product materialization tolerance are solved, and the ink composition can be applicable to multiple base materials such as paper and plastic.

The invention relates to a biological pesticide. The biological pesticide is characterized by being prepared from the raw materials in percentage by weight: 10-60wt% of cinnamyl aldehyde and toosendan fruit extracts, 8-10wt% of surfactant, 0.01-0.5wt% of chitosan, 10-50wt% of synergist and the balance of 95% ethanol, turpentine oil, lavender essential oil, ageratum oil and purple perilla leaf oil. According to the biological pesticide disclosed by the invention, the cinnamyl aldehyde and toosendan fruit extracts are taken as main active ingredients, so that the biological pesticide has non-toxic and harmless properties and has good volatility, and the disadvantages of pesticide residue increase and ecological environment destruction can be overcome; although the cost of the biological pesticide is slightly higher than that of chemical pesticides currently, the social benefit is better, the environmental pollution is less, and thus, the biological pesticide has a lot of advantages in the long run.

An application of bacterial cellulose-tea polyphenol composite film in food fresh keeping is disclosed. The application is characterized in that acetobacter xylinus is adopted as a bacterial strain, inoculated to a medium and cultured for a certain period of time to obtain bacterial cellulose hydrogel, and the hydrogel is subjected to purification and treatment, then soaked in a tea polyphenol solution having a certain concentration, and dried to obtain the composite film. The bacterial cellulose has characteristics of degradability, no toxicity, no harm, good film forming performance, and the like, the bacterial cellulose is composited with the tea polyphenols which are a natural bacterial depressant and which have wide-spectrum bactericidal effects to form the film, and package film having antibacterial functions is prepared and applied to fresh keeping of chilled meat so as to meet market demands.

The invention discloses a special material for permanent antistatic flexible PE (polyethylene) pipes. 100 parts of PE-RT resin by weight, 20-35 parts of a conductive master-batch by weight, 2-8 parts of a thermoplastic elastomer by weight, 1-5 parts of a dispersing agent by weight, 0-0.5 part of an antioxidant by weight, 0-0.5 part of a release agent by weight and 0-0.5 part of a liquid lubricant by weight are evenly mixed in a high-speed stirrer, then extruded by twin screws, cooled with water and granulated, and the machining temperature is in a range of 180-195 DEG C. The special material for the pipes is dried, then extruded to form the pipes, cooled and drawn to be prepared into finished products. Compared with the prior art, the special material has the advantages that the antistatic property is good, the permanent antistatic effect is realized, the tensile strength, the flexural strength and the impact strength are equivalent to those of pure PE-RT, the flexural modulus is lower, the advantage of the flexibility of the PE pipes is kept, the special material is convenient to transport, construct and install, good in environment resistance and low in cost, and the volume resistivity of the special material for the permanent antistatic flexible PE pipes can be stabilized at 106 ohm / cm.

The invention provides an anti-fog self-cleaning film and a method for preparing the same. The film is characterized in that: Fe2O3, SiO2 and TiO2 are mixed to form a ternary inorganic nanometer composite sol according to the molar ratio of (0.1-0.4):(10-40):100, and a water soluble macromolecular substance of which the molecular weight is between 400 and 10,000 is added to the composite sol according to the concentration of (0.1-4.0)g.L. The anti-fog self-cleaning film can achieve the advantages of super-hydrophilicity, strong hydrophilic retention capability, high transmittance, high photocatalytic activity, high capability of adhering to base materials, and good anti-fog self-cleaning effects.

The invention relates to plant-source biopesticide for preventing strawberry diseases. The biopesticide is prepared from 10-60wt% of cinnamyl aldehyde and Szechwan chinaberry fruit extracts as well as allicin and capsaicine, 8-10wt% of surfactant, 8-10wt% of pythium oligandrum, 0.01-0.5wt% of chitosan, 10-50%wt% of synergist and the balance being 95% ethyl alcohol and turpentine as well as lavender essential oil, palchouli oil and perilla oil. The biopesticide takes the cinnamyl aldehyde and cinnamyl aldehyde extracts as main active ingredients, thereby having no toxicity and harm and good volatility and overcoming the defects that pesticide residue is increased and ecological environment is destroyed. Besides, even though the biopesticide is higher than chemical pesticide in cost at present, the biopesticide has many advantages on a long view due to good social benefit and less environmental pollution.

The invention discloses a negative pole of an enzymatic biofuel cell as well as a preparation method and application of the negative pole. The negative pole is prepared by taking carbon paper as an electrode substrate, an enzyme as a catalyst and a carbon nano-tube / cibacron blue composite as an enzyme carrier, wherein the carbon nano-tube / cibacron blue composite is a carbon nano-tube modified by cibacron blue. The negative pole of the enzymatic biofuel cell disclosed by the invention has rich surface active groups which provide rich bonding sites for the load of enzyme, and has favorable conductivity; an enzymatic biofuel cell electrode prepared by the negative pole of the enzymatic biofuel cell can be used for greatly increasing the power density of the enzymatic biofuel cell.

The invention discloses a water-based plastic track and a preparation method thereof. The water-based plastic track comprises an elastic layer and an antiskid layer, wherein the elastic layer is formed by mixing a polymer emulsion and white cement at mass ratio of 1.5-1.75, then adding waste rubber crumbs to the mixture, uniformly stirring the materials and then paving and curing the obtained mixture; the antiskid layer is prepared from a polymer emulsion, white cement, pigments and EPDM (Ethylene-Propylene-Diene Monomer) granules. The water-based plastic track is simple in process and low in cost, and not only has elasticity and skid resistance of a polyurethane rubber track, but also has the advantages of being non-toxic, harmless, excellent in performance, safe, environmentally-friendly and the like.

The invention discloses a preparation method of magnetic chitosan-sodium alginate gel balls, which comprises the following steps: preparing magnetic particles I of chitosan-coated fly ash magnetic beads and magnetic particles II of chitosan-coated Fe3O4 nanoparticles; dissolving 20-30 parts by weight of the sodium alginate in 60-80 parts by weight of pure water, adding 25-30 parts by weight of a mixture of the magnetic particles I and the magnetic particles II with the mass ratio of 1: 1-3, stirring and mixing, performing ultrasonic treatment for 5-10 minutes to obtain a magnetic mixed solution; dissolving 25-35 parts by weight of CaCl2 in 60-70 parts by weight of ultrapure water, slowly and uniformly dropping the magnetic mixed solution into the CaCl2 solution into the CaCl2 solution by using a syringe needle with the specification of 1 ml; cross-linking the magnetic mixed solution in water to form composite gel balls of uniform size; after soaking for 2-4 hours in CaCl2 solution, taking the gel balls out and washing for 3 times with ultrapure water to obtain magnetic chitosan-sodium alginate gel balls; the preparation method can prepare the novel composite adsorbent with uniformparticle size distribution, good dispersibility and stability, and good effect.

The invention discloses a preparation method of a far-infrared ceramic liner for an electric rice cooker. According to the preparation process, a low-expansion spodumene-based ceramic liner body is firstly prepared, wherein the ceramic liner meets rapid cooling and rapid heating in the range of 500 DEG C-20 DEG C, and the water absorption rate is less than 0.5%. The preparation process of the ceramic liner body comprises the steps of mixing and ball-milling; mud squeezing; mud stirring; rolling and forming; drying; trimming; and firing, then glaze firing with a low-expansion inner glaze, and coating with an ordinary coating outside to obtain the ceramic liner. The far-infrared ceramic liner for the electric rice cooker, prepared according to the preparation method disclosed by the invention, can be widely used for replacing aluminum liners of the electric rice cookers; the ceramic liner has the advantages that the surface which is in contact with foods is environment-friendly and durable, and the ceramic liner has a far-infrared radiation function after being heated; when the ceramic liner is used for cooking rice and other foods, a certain through heating effect is realized, so that the heating of the rice is uniform and thorough, and the rice has relatively good shape, taste and fragrance.

The invention relates to the technical field of seed initiation, in particular to a no-heading Chinese cabbage seed initiator, which is prepared from ascorbic acid, calcium chloride, gibberellin, polyethylene glycol, buffer agents and sterilization agents, wherein the concentration of the ascorbic acid is 20 to 200mg / L; the two optimum concentrations of the ascorbic acid in the no-heading Chinesecabbage seed initiator are respectively 50 and 80 mg / L; the buffer agents are one or several kinds of materials of glucose and fumaric acid; the sterilization agents are tetra methylthiuram disulfide.The invention also discloses an application method of the no-heading Chinese cabbage seed initiator. Through the seepage initiation effect of the ascorbic acid, the seed cell water absorption is controlled; the seed gemmation power is favorably improved; the gemmation of the no-heading Chinese cabbage seeds is promoted; the functions of preventing membrane lipid peroxidation, clearing away free radicals and maintaining cytomembrane integrality are realized; the young seedling growth is more facilitated.

The invention discloses a wood container and preparing method, which is characterized by the following: adopting two wood films to chuck one gluing film, forming glue on the fiber wood surface, integrating mould and wood slice through heat fusing to form wood container.

The invention relates to a preparation method of a carboxymethyl cellulose based reversible photochromic hydrogel. The preparation method comprises the following steps: dissolving carboxymethyl cellulose of different substitution degrees into water to prepare a carboxymethyl cellulose aqueous solution, preparing a phospho-tungstic acid aqueous solution, mixing the phospho-tungstic acid solution and the carboxymethyl cellulose aqueous solution under the condition of continuous stirring, controlling addition manner and dosage of phospho-tungstic acid, and finally stopping stirring and standing for 2h so as to obtain the carboxymethyl cellulose based hydrogel.

The invention relates to a method for synthesizing copper-based perovskite powder by a low-temperature solvent method. The method comprises the following steps: adding CsX and CuX into a polar organicmixed solution, and stirring for 4-6 hours at 40-70 DEG C, wherein the polar organic mixed solution is a mixed solution of N, N-dimethylformamide (DMF)and dimethyl sulfoxide (DMSO), the CsX is cesiumchloride, cesium bromide or cesium iodide, and the CuX is copper chloride, copper bromide or copper iodide. According to the synthesis process, constant-temperature growth on a hot plate is not needed, synthesis is directly conducted on a magnetic stirrer, the synthesis process has the advantages of being short in manufacturing period, low in cost, simple in growth step, environmentally friendlyand the like, and Cs3Cu2X5 powder with high crystallization quality is separated out within 5 hours.

The invention relates to tableware containing bamboo fibers and a making method thereof. The tableware containing bamboo fibers is made of bamboo fiber compositions through hot pressing molding. The making method comprises the following steps of: a, fully mixing the bamboo fiber compositions, and then molding at a temperature of 145-160 DEG C and under the pressure of 200-300t through hot pressing to obtain a semi-finished product of a certain shape; b, carrying out surface cleaning processing on the semi-finished product: cleaning the surface of the semi-finished product by water or alcohol;c, spraying one layer of transparent protecting film on the outer surface of the semi-finished product after the surface of the semi-finished product to be cleaned is dried; and d, baking at a temperature above 100 DEG C for 30-50 minutes. The tableware is made by carrying out proper proportioning on special materials, pressing and molding and then spraying one layer of transparent protecting film, so that the product reaches food stage safety, the service life is prolonged; meanwhile, the tableware has the property of being easily biologically degraded. According to the tableware, the defectthat bamboo fibers cannot be molded through solidification or the molded tableware containing the bamboo fibers cannot meet food stage requirements in the prior art is overcome.

The invention belongs to the technical field of composite materials, and relates to a thermoplastic composite material floor and a preparation method and a preparation apparatus thereof. The thermoplastic composite material floor consists of thermoplastic resin and continuous filaments which are dispersed in the thermoplastic resin in parallel along the horizontal direction of the floor in a lamelleted shape. Compared with the prior art, the preparation method has the advantages that the technology is simple, the operation is easy, the floor can be directly formed, the forming is easy, and the forming period is short; compared with the defects of mutability, easiness in wear and the like of the traditional solid wood floor and wood plastic composite floor, the floor obtained by the preparation method has the advantages that the deformation resistance is more excellent, the permanent deformation does not occur, the durability is better, and the weather ability and the corrosion resistant capacity are better.

The invention discloses a detachable carpet, and belongs to the technical field of carpets. The detachable carpet comprises a base cloth layer. Waterproof layers are arranged on the top and the bottomof the base cloth layer, clamping strips are arranged on the left sides and the right sides of the top and the bottom of the base cloth layer, fixing grooves matched with the clamping strips are formed in the joints of the two sets of waterproof layers and the base cloth layer, clamping blocks are arranged on the left sides and the right sides of the two sets of waterproof layers, and clamping grooves cooperating with the clamping blocks are formed in the joints of the two sets of waterproof layers and the clamping blocks. The polyurethane layers are low in mass and environmentally friendly,and have good waterproof performance, the waterproof layers arranged on the top and the bottom of the base cloth layer can be conveniently detached and manually cleaned, the structural shapes of the waterproof layers cannot be damaged, the original use performance of the waterproof layers is kept, detaching and mounting of the waterproof layers and the base cloth layer are achieved through the cooperation of the clamping strips and the fixing grooves, and the structure can be firmly connected through the cooperation of the clamping blocks and the clamping grooves.

The invention discloses a preparation method and application of a cerium dioxide nanowire, and belongs to the technical field of material preparation and environmental governance. The method comprises the following steps: carrying out a strong alkaline hydrothermal reaction on an aqueous solution of a molybdenum source and an aqueous solution of a cerium source to generate a mixture of a cerium oxide precursor and the molybdenum source, and uniformly mixing the mixture through hydrothermal stirring; and finally, carrying out high-temperature calcination in an air atmosphere to obtain the cerium dioxide nanowire. After cerium dioxide is modified with molybdenum, the morphology of cerium dioxide can be changed, the yield of carbon dioxide can be increased, precious metal can be replaced to achieve the purpose of increasing the yield of carbon dioxide, and the cost is remarkably reduced. The method has the advantages of simple operation, easily available raw materials, low cost, low energy consumption and the like; the stability is good, the activity is high, and the efficiency of photo-thermal catalytic combustion of volatile organic compounds is high.

The present invention relates to the technical field of bras, and in particular relates to a washable quick-drying portable air-permeable bra and a preparation method thereof, the washable quick-drying portable air-permeable bra includes a bra cup part and a back surrounding part which is connected with two ends of the bra cup part, the bra cup part is an air-permeable cotton bra cup part, the back surrounding part is an air-permeable cotton back surrounding part, the bra cup part and the back surrounding part respectively comprise a first adhesive net layer, a first cotton net layer, a cotton layer, a second cotton net layer and a second adhesive net layer; the first adhesive net layer, the first cotton net layer, the cotton layer, the second cotton net layer and the second adhesive net layer are connected from outside to inside in turn, and the first adhesive net layer and the second adhesive net layer are respectively provided with a plurality of air-permeable holes. The washable quick-drying portable air-permeable bra adopts an air-breathable cotton fabric, and the washable quick-drying portable air-permeable bra is excellently light, breathable, skin-friendly, washable, quick-drying and soft, is comfortable to wear and easy to carry, does not produce mugginess feeling, is low tendency to produce mold, does not affect breast blood circulation, is conducive to breast health, can be repeatedly washed and dried, and is suitable for travel women and environmentally-friendly and healthy.

The invention discloses an environmentally-friendly automobile engine coolant which is prepared from the following raw materials in parts by weight: 30-70 parts of propylene glycol glucoside, 30-70 parts of water, 0.5-0.7 part of sodium hydroxide, 0.4-0.6 part of sodium nitrite, 0.5-0.7 part of sebacic acid and 0.2-0.4 part of benzotriazole. The novel environmentally-friendly automobile engine coolant, disclosed by the invention, is prepared by carrying out chemical reaction on starch and propylene glycol which are utilized as the raw materials in the presence of a catalyst (acid) at a certain temperature, using a generated product (propylene glycol glucoside) as a matrix of a deicing fluid, and preparing a small number of an antirusting agent, an antifouling composition and a foam suppressor. The environmentally-friendly automobile engine coolant adopts the propylene glycol glucoside for the deicing fluid; the propylene glycol glucoside has the advantages of no toxicity, harmlessness, good biodegradability and the like; the propylene glycol glucoside per se also has functions of sterilization and corrosion prevention; and the environmentally-friendly automobile engine coolant is completely environmentally-friendly.

The invention belongs to the technical field of ultra-precision machining of hard and brittle materials, and provides a high-efficiency mixed abrasive chemical mechanical polishing solution for a sapphire substrate. The high-efficiency mixed abrasive chemical mechanical polishing solution comprises a mixed abrasive, a surfactant, a chelating agent, a pH regulator and deionized water. After chemical mechanical polishing, the surface roughness Ra of the sapphire substrate is 0.530 nm and the material removal rate is 6.78 mu m / h in a large detection range of 105*141 mu m<2>. The ultra-high material removal rate of the sapphire substrate and the chemical mechanical polishing of the undamaged sub-nanometer surface roughness are realized.

The invention discloses an asphalt flame retardant, a preparation method and application of the asphalt flame retardant. Flame-retardant asphalt is formed by mixing 75-85% of SBS modified asphalt and15-25% of a flame retardant, the flame-retardant asphalt has good flame-retardant performance, an active oxide formed through heating decomposition of a metal hydroxide is a good fireproof material and covers the surface of the asphalt to form an insulation layer, flowing of combustible volatile substances is stopped, the situation is also slowed down that external oxygen permeates into the asphalt, so that a sufficient oxidation reaction of the burning surface is difficultly conducted, and accordingly the flame retardance and smoke inhibition function is achieved; the highest limit oxygen index reaches 29.2%, the synergistic flame retardance efficiency can reach 1.34, the influence on various technical indexes of the asphalt and an asphalt mixed material is small, no poisonous gas is generated, the asphalt flame retardant is safe and environmentally friendly, the production technology is simple, the quality is table, the cost is low, and the asphalt flame retardant has high economic applicability.

The invention relates to a nucleic acid corrosion inhibitor and application thereof, and belongs to the field of metal corrosion and protection and the field of application of biological macromolecules. The nucleic acid corrosion inhibitor comprises, by weight, 1-20% of nucleic acid, 10-30% of alkynol, 16-20% of pitting corrosion inhibitors and 30-70% of low-molecular-weight alcohol. The nucleic acid corrosion inhibitor and the application have the advantages that outermost layers of oxygen, nitrogen and phosphorus atoms on molecular structures of the nucleic acid contain unpaired electrons, a plurality of adsorption points can be formed by the atoms on metal surfaces under coordination effects, accordingly, generation of corrosion inhibition films can be promoted, the corrosion inhibition films cover the metal surfaces, and metal corrosion can be controlled or relieved; excellent metal corrosion inhibition effects can be realized by the nucleic acid corrosion inhibitor in acidic media, the corrosion inhibition rate can reach 90% at least, and the nucleic acid corrosion inhibitor is provided with biological macromolecular structures and is excellent in biodegradability; the nucleic acid corrosion inhibitor is low in usage and high in efficiency and cost performance and is environmentally friendly, and raw materials for the nucleic acid corrosion inhibitor can come from wide sources.

The invention relates to the field of electrochemistry, and particularly discloses a tungstate-based catalytic material and application thereof in hydrogen peroxide production through water oxidation.The tungstate-based catalytic material can be used for hydrogen peroxide production by water oxidation electrochemical reaction in a more environment-friendly, energy-saving, safe and reliable manner. The tungstate-based catalytic material provided by the invention has the advantages of no toxicity, harmlessness, environmental protection, simple and integrated device and equipment, uncomplicatedoperation, low energy consumption, extremely high application commercial value and wide application prospect, and the raw materials of the whole process are water which is easy to obtain everywhere inthe chemical reaction process of producing hydrogen peroxide through water oxidation. The material solves the problem that hydrogen peroxide cannot be simply produced with low cost under the environment-friendly condition in the existing method for synthesizing hydrogen peroxide through electro-catalysis, and has an excellent market application prospect.

The invention relates to a water-based cleaning agent for high-speed railway maintenance. The water-based cleaning agent comprises, by weight, a main material and the balance of water, wherein the main material comprises, by weight, 1-5% of isomeric alcohol polyoxyethylene ether, 1-5% of sodium hydroxide, 1-5% of ethylenediaminetetraacetic acid, 3-5% of a surfactant Berol 226, 2-3% of coconut oilfatty acid diethanolamide, and 3-5% of isohexanediol. The preparation method comprises: dissolving, stirring and standing. According to the present invention, the water-based cleaning agent has advantages of scientific and reasonable components, scientific and reasonable component ratio, high decontamination and cleaning ability, low use cost, non-toxic and harmless raw materials, no irritating odor, no harm to human body, no atmospheric pollution and no environment pollution, and can be widely used for maintenance or flaw detection and equipment maintenance and cleaning of high-speed rail electrical power, bogies, gearboxes, axles and other equipment perennially exposed to wind and sand, salt mist and dampness-heat and humid harsh environments.

The invention discloses a water-retaining agent for bamboo willow in drought regions and relates to the technical field of fast-growing tree planting. The water-retaining agent is prepared from the following raw materials in parts by mass: 50-60 parts of plant starch, 40-45 parts of polyacrylic acid, 20-25 parts of carboxymethyl chitosan, 15-20 parts of montmorillonite, 15-20 parts of nano calcium carbonate, 12-15 parts of gelatin, 10-12 parts of calcium sulfate, 8-10 parts of white carbon black, 5-8 parts of urea, 5-8 parts of phosphorus pentoxide, 2-3 parts of benzoyl peroxide, 30-40 parts of isopropanol and 100-120 parts of water. The water-retaining agent is capable of improving the soil water absorptivity and suitable for the drought regions, and has the water absorption rate within the range from 400 to 450; besides, the water-retaining agent has the characteristics of non-toxicity and innocuousness and automatic degradation, does not cause pollution to plants and soil underground water and is high in safety.