135results about How to "Has absorption" patented technology

The invention discloses a pesticide preparation containing plant vinegar liquid, wherein the ingredients include plant vinegar liquid 1-99%, conventional pesticides 0.1-90.0%.

The invention discloses concrete healant, which comprises following components by weight percent: 30 to 55 percent of gelatinization materials, 40 to 65 percent of fine aggregates, 0.1 to 0.5 percent of water reducing component, 0.05 to 0.5 percent of early-strengthening component, 0.05 to 0.2 percent of delayed-coagulation component, 0.2 to 1.0 percent of nano materials, 0.5 to 1.0 percent of high-activity substances, 0.01 to 0.2 percent of water retention thickening component, 0.2 to 2.0 percent of polymer and 0.02 to 0.2 percent of defoaming agent. The concrete healant not only has characteristics of good mobility, fast strength development, high adhesion strength and small retraction, but also can fill active substances into original concrete gaps and can produce compact crystals, so that the cohesion strength of the new and the old concrete interfaces can be remarkably improved, and the concrete healant is applicable to the concrete mending projects of bridges, caves, industrial workshops and civil construction.

The invention belongs to the technical field of materials and radomes, and specifically relates to a single-passband bilateral wave-absorbing composite metamaterial and a radome and an antenna system including the same. The single-passband bilateral wave-absorbing composite metamaterial comprises a dielectric substrate (100) made of a non-conductive material and four periodic metamaterial structure layers embedded into the dielectric substrate. The four periodic metamaterial structure layers are respectively a resistive film layer (102), a first metal patch layer (103), a second metal patch layer (104) and a third metal patch layer (105) in sequence from top to bottom. The metal patch layers for realizing frequency selection enable an array antenna to keep good radiation characteristic and communicate freely in an X band; and meanwhile, in the S band, Ku band and K band at the two sides of the passband of the X band, the resistive film layer with wave absorption characteristic and the metal patch layers in the composite metamaterial radome work together, and electromagnetic wave which is incident on the radome and then reflected back by the metal patch layers is well absorbed.

The invention discloses a nanocomposite road marking coating material. The nanocomposite road marking coating material comprises the following ingredients in parts by weight: 20-30 parts of glass powder, 6-10 parts of aluminum oxide powder, 50-80 parts of filler, 30-40 parts of epoxy resin, 15-20 parts of aqueous epoxy modified acrylate, 15-20 parts of glass micro-beads, 10-20 parts of chitin, 15-20 parts of chitosan, 20-40 parts of nano titanium white, 15-20 parts of nano zinc oxide, 10-15 parts of nano-silica, 2-4 parts of 25wt% ammonia water, 30-40 parts of acrylic emulsion and 15-20 parts of nano rare-earth self-luminous material. The invention further discloses a preparation method of the nano coating material. The nanocomposite road marking coating material disclosed by the invention is high in drying speed and long in service life, is wear-resistant and anti-fouling and has a bacterium resisting effect, and nano-materials or nano-structured ingredients are introduced into an organic coating material, so that organic and inorganic matched compositing or hybridization is realized. The advantages of organic polymers and inorganic-structured ingredients are integrated, so that the properties of the coating material are obviously improved.

The invention relates to the technical field of mining security, and particularly relates to a method for constructing a mining impact-resisting sealed wall. The method adopts simpler and more convenient construction procedures, and light foam concrete is filled, so that the wall has the advantages of light weight, large bearing ability, strong flexibility, fire resistance and the like. The method is simple and convenient to construct, rapid in construction speed, good in construction effect; and the sealed wall has the advantages of good impermeability and good impact-resistance and fire-resistance.

The invention discloses a soil improvement type biological organic composite coated fertilizer which is characterized by being prepared from the following raw materials in parts by weight: 67-70 parts of human and animal excreta, 25-30 parts of riverway sludge, 8-10 parts of diatomite, 25-28 parts of diammonium phosphate, 12-15 parts of magnesium sulfate, 15-19 parts of potassium chloride, 45-49 parts of furfural residue, 40-45 parts of animal bone meal, 50-54 parts of rice husk, 35-40 parts of saw dust, 27-29 parts of urea, 3-5 parts of amino acids, 1-2 parts of sodium tetraborate, 7-8 parts of an EM fungicide, 7-9 parts of a soil improvement agent and a proper amount of water. The fertilizer disclosed by the invention is balanced in nutrition, contains inorganic elements and mineral substance components such as the riverway sludge and diatomite, the nutrient needed by plant growth is met, the soil is activated, and the water and fertilizer retaining properties of the soil are improved; and due to the addition of the soil improvement agent, the fertilizer has the effects of improving the efficiency and promoting plant nutrition absorption. According to the fertilizer disclosed by the invention, the urea melting and coating process is adopted, the slow-release effect is obvious, and the fertilizer efficiency is lasting.

The invention provides a method for preparing a ginseng and coix seed mixture and a ginseng and coix seed paste. Raw materials comprise 1 to 10 parts of ginseng, 10 to 30 parts of coix seed, 2 to 10 parts of lotus seed, 10 to 35 parts of glutinous rice, 5 to 20 parts of black rice, 10 to 30 parts of flour, 2 to 15 parts of black sesame, 1 to 6 parts of walnut kernel, 1 to 10 parts of peanut kernel, 3 to 10 parts of malto dextrin, 1 to 4 parts of black soya bean, 1 to 4 parts of small red bean, 1 to 10 parts of edible modified starch and 2 to 10 parts of white granulated sugar. The ginseng is subjected to supercritical CO2 extraction, the green production process is really realized, and the total extraction rate of active substances such as ginsenoside and the like is over 90 percent. The obtained product is fine powder without cakes, is easy to store and convenient to use, has characteristics of fine and smooth texture, delicious taste and tasty mouthfeel, cleanness and faint scent, and high digestion and absorption rate of natural nutrients, and maintains natural nutrient components of the raw materials, and improves the mouthfeel and the nutrient component absorption rate.

The invention discloses water-retention slow-releasing carbon-based compound fertilizer and belongs to fertilizer used in agriculture and forestry production. The carbon-based compound fertilizer is prepared from the ingredients of nitrogenous fertilizer serving as the major ingredient, phosphatic fertilizer, potash fertilizer and trace elements in the fertilizer and filling powdered carbon. The preparing method comprises the following steps of: mixing the ingredients uniformly to serve as powder material or pelletizing the powder material of the mixed powder and bagging for supplying the market. According to the invention, agriculture and forestry plant waste and the like are carbonized for preparing carbon powder, so that the utilization of waste materials can be achieved, the income of farmers can be increased, and the environment can be protected. Most importantly, filler such as mountain flour is replaced by the carbon powder so that the efficacy of the fertilizer can be improved, significant process can be made, and an unexpected effect can be achieved. According to the invention, the basic one-water double-fertilizer requirement in agricultural production can be met. As the carbon powder has strong permeability and a moisture-feed circulative-absorbing water-retention function, oxygen in the fertilizer can be slowly released, the use ratio of the fertilizer is improved, and essential condition for plant growth is met.

The invention provides a protective composite material, which comprises a protective layer, a functional layer and a comfort layer stacked in order; from the end of the protective layer, the functional layer includes a nuclear radiation shielding layer, an electromagnetic shielding functional layer and a textile substrate which are sequentially stacked, or, the functional layer includes the nuclear radiation shielding layer and the textile substrate which are sequentially stacked; and from a fabric substrate end, the comfort layer includes a neutron protective coating and a polypropylene high-molecular substrate which are sequentially stacked. The invention also provides a preparation method of the protective composite material. The protective composite material has multiple functions of flame retardation, static prevention, anti-ionization / electromagnetic radiation and neutron protection, and can be used for processing nuclear radiation protective clothing and protective tents, flexible protective screens and the like.

The invention belongs to the spinning field, and relates to a microporous photocatalyst bamboo charcoal polyester modified short fiber and preparation thereof. For the microporous photocatalyst bamboo charcoal polyester modified short fiber, the surfaces and the inside have irregular microporous structures, all micropores penetrate through each other, photocatalyst compound micro powder and bamboo charcoal micro powder are uniformly distributed on the external surfaces, surface layers and insides of the whole short fiber as well as the surface and inside of each micropore, and the photocatalyst compound micro powder and the bamboo charcoal micro powder respectively account for 1.05-1.35wt% and 1.8-2.6wt% of the short fiber. The fiber provided by the invention is an environment-friendly one which has the functions of harmful gas and harmful microorganism absorption, bacterium resistance, mould proofing, deodorization, far infrared wave transmission, moisture absorption, quick drying and the like. Under the irradiation of light rays, the absorbed harmful gas and harmful microorganisms can be decomposed into carbon dioxide and water, thus the functions of purifying the air and cleaning the environment are achieved. Under the condition of illumination, the short fiber can be circularly and continuously used and can play corresponding roles.

The invention discloses sterilization and aldehyde-removal nanometer polyurethane paint, which is composed of three components A, B and C. The component A is prepared by uniformly mixing alkyd resin 618, propylene glycol methyl ether acetate, a defoaming agent, a nanometer bactericide, wear-resisting prefabricated slurry, 1 / 4 second nitrocotton with a solid content being 28%, a leveling agent, an anti-settling agent and butyl acetate, the component B is prepared by uniformly mixing a tolylene diisocyanate (TDI) trimer, a TDI additive product and butyl acetate, and the component C is prepared by uniformly mixing propylene glycol methyl ether acetate, butyl acetate and cyclohexanone; and when the sterilization and aldehyde-removal nanometer polyurethane paint is used, the three components are uniformly mixed according to a weight ratio. Compared with similar products in the market, the sterilization and aldehyde-removal nanometer polyurethane paint disclosed by the invention has the function of removing formaldehyde in triple manners of absorption, decomposition and seal and has the advantages of favorable sterilization effect, good product adhesion force, scraping resistance, good application property and good tolerance.

The invention discloses application of carbon dots in preparing an anti-ultraviolet product. The anti-ultraviolet product can be fiber, cosmetics, coating, printing ink or resin. The anti-ultraviolet product prepared from the carbon dots is remarkable in UVA (Ultraviolet A) and UVB (Ultraviolet B) absorption effect and low in production cost, and the obtained product has the advantages of safety (no toxicity), stability (difficulty in decomposition) and the like.

The invention relates to a sunscreen composition, which is prepared from the following components in parts by weight: 8-22 parts of sunscreen, 3-6.5 parts of skin-moisturizing oil, 1.2-5 parts of propylene glycol alginate, 0.15-0.45 parts of ethyl cellulose, 0.15-0.45 parts of propylene glycol isostearate, 58.2-82 parts of water, 1-5 parts of wetting agent and 0.5-4 parts of auxiliary material, wherein the auxiliary material comprises a thickening agent and a neutralizer. The invention further provides a preparation method and application of the sunscreen composition. The sunscreen composition disclosed by the invention has the advantages of being fresh and cool, easy to smear, waterproof, sweatproof and the like; the preparation method is suitable for industrial production, and can be used for preparation of cosmetics.

The invention discloses a dendrobium officinale healthcare product with an auxiliary blood glucose reducing function. The dendrobium officinale healthcare product comprises the following raw materials in parts by weight: 35 to 45 parts of fresh dendrobium officinale bars, 1 to 2 parts of American ginseng, 2 to 4 parts of the root of kudzu vine, 2 to 4 parts of radix trichosanthis and 1 to 2 parts of fructus schizandrae. A preparation method for the dendrobium officinale healthcare product with the auxiliary blood glucose reducing function comprises the following steps: weighing the raw materials; processing the fresh dendrobium officinale bars; processing the American ginseng; performing alcohol extracting; performing water extracting; drying; batching. According to the dendrobium officinale healthcare product with the auxiliary blood glucose reducing function disclosed by the invention, the raw material formula is from clinical practice under the guidance of the theory of traditional Chinese medicine; the herbal medicines in a prescription are concise and are high in pertinency; the medicines in a raw material formula can nourish yin, benefit qi, clear heat and promote the secretion of saliva or body fluid; the active ingredients of the medicines are easy to absorb and are favorable to play efficacy; the medicinal materials in the raw material formula have the homology of medicine and food, and have no toxic or side effect.

The invention relates to a jellyfish bioactive peptide acidophilus milk and a preparation method thereof, which takes high quality jellyfish as raw material and water with the weight of 2 times to 4 times of the weight of the jellyfish is added to the jellyfish which is firstly desalted and mashed to adjust pH value, and then at the temperature of 55 to 60 DEG C, alkali protease is added based on the standard that 800 to 1200 enzyme-activity units (u) are added for each gram of jellyfish before dilution to keep warm for 2 hours to 5 hours for zymohydrolysis, and jellyfish polypeptide liquid with the molecular weight between 1000 daltons to 3000 daltons is prepared after inactivation of enzyme, centrifugal separation and ultrafiltration; and the jellyfish polypeptide liquid, after going through sterilization, is fixed with acidophilus milk prepared in an ordinary method and stirred evenly and aseptic canning is carried out, and then finished products are prepared. The percentage by weight of the jellyfish polypeptide liquid is 5 percent to 20 percent and the percentage by weight of the acidophilus milk is 80 percent to 95 percent. The jellyfish bioactive peptide acidophilus milk is rich in nutrition, easy to absorb, convenient for drinking and good in taste, and has the effects of clearing away heat and toxic material, eliminating sputum and exhausting qi, moistening intestine and eliminating accumulation, realizing angiectasis, reducing blood pressure, and so on. The preparation technology of the invention is reasonable in technology, simple and convenient in preparation and strong in operability, thus being easy in realizing commercial process.

Belonging to the field of organic optoelectronic materials and organic photoelectric conversion application, the invention provides a phenothiazine pure organic dye, a preparation method and application thereof in dye-sensitized solar cells. The phenothiazine pure organic dye has a phenothiazine group, different functional groups are introduced to the N position of the phenothiazine group, and the phenothiazine group is connected to a carbazole group through meta-benzene, and the phenothiazine pure organic dye has a general formula shown as the specification, The dye provided by the invention can be applied to dye-sensitized solar cell devices to achieve high photoelectric conversion efficiency. The synthesis and preparation method involved in the invention is simple and controllable, and is low in cost, and the cell devices thereof have high efficiency. The phenothiazine pure organic dye is expected to replace traditional heavy metal sensitizing agent dyes, and has the application prospect of commercial production.

The invention discloses a multi-functional ultraviolet-visible spectrometer, which comprises an ultraviolet-visible light source, a fixed convex lens, an adjustable diaphragm, a movable convex lens, a turning apparatus, a charge coupled device (CCD) miniature spectrometer and a microcomputer. The multi-functional ultraviolet-visible spectrometer of the invention has a reflectance spectrum test function, a transmittance spectrum test function, an absorption spectrum test function, a scattered spectrum test function and a fluorescence spectrum test function, and can measure variations of the spectrum and the spectral intensity with angles through rotation of a sample table turning apparatus and a light-guide fibre turning apparatus, thereby obtaining a reflectance spectrum, a transmittance spectrum, a absorption spectrum, a scattered spectrum and a fluorescence spectrum which have angle resolution capability.

The invention relates to a jellyfish and water chestnut drink and a preparation method thereof, wherein the preparation method comprises the following steps: selecting fresh or alum jellyfishes whichare soaked with clean water as raw materials, freezing and then smashing to prepare slurry; adding the jellyfishes slurry into soft water, adjusting the protein concentration to 2-5 percent and the pHvalue to 7.5-8.5, controlling the temperature, adding trypsinase with the consumption of 1, 000-4, 000l / g of substrate protein, preserving heat for 3-5 hours, and carrying out zymohydrolysis, enzymekilling and centrifugalization to obtain a jellyfish polypeptide liquid; selecting high quality water chestnuts to prepare water chestnut original juice; and weighing the following components in percentage by weight: 50-60 percent of jellyfish polypeptide liquid, 30-40 percent of water chestnut original juice, 6-7 percent of sweetening agent, 0.1-0.4 percent of complex stabilizer, 0.05-0.1 percentof emulsifier and the balance of water, uniformly mixing, homogenizing, filling and sterilizing to obtain a finished product. The jellyfish and water chestnut drink has unique flavor, rich nutrition,good taste, rapid nutritive absorption and health efficacy of eliminating phlegm, lowering blood pressure and the like. The preparation method has reasonable process and strong operability, and is suitable for industrial production.

The invention provides photocatalytic yellow powder capable of being applied to environment purifying. Each titanium dioxide particle is wrapped by iron phosphate particles, and the degrading function of the titanium dioxide to a macromolecule organic matter is selectively shielded or weakened. The photocatalytic solid powder can be extensively applied to various organic polymer setting products, especially organic fibers or plastic products or colored paint.

The invention belongs to the field of healthy drinks and particularly relates to a cranberry hemp seed meal polypeptide oral solution and a preparation method thereof. The cranberry hemp seed meal polypeptide oral solution provided by the invention consists of the following components in percentage by weight: 0.6-1.5 percent of a hemp seed meal polypeptide powder, 1-3 percent of cranberry juice, 3-9 percent of xylitol and the balance of purified water. According to the preparation method provided by the invention, hemp seed meal polypeptides are prepared by adopting a compound enzymolysis method, the cranberry juice is prepared by cleaning and juicing wild ripe cranberries, then the prepared hemp seed meal polypeptide powder, the cranberry juice and the xylitol are blended into an oral solution finished product in proportion, and the oral solution finished product is filled and sterilized at a high temperature. The cranberry hemp seed meal polypeptide oral solution provided by the invention is convenient to take, good in mouth feeling and rich in nutrition, the application of the cranberries and the hemp seed meal polypeptides to the field of the healthy drinks is expanded, and the value added of deep processing of the cranberries and hemp seed meal is improved. Moreover, the cranberry hemp seed meal polypeptide oral solution is simple in preparation process and suitable for scale production.

The invention discloses a formula of flame-retardant polyethylene plastic. The flame-retardant polyethylene plastic comprises polyethylene plastic and additives, wherein the additives comprise antimony oxide serving as a flame retardant, dilauryl thiodipropionate serving as an antioxidant, benzophenone serving as a light stabilizer, polyoxyethylene stearate serving as an antistatic agent, acrylate copolymer serving as an impact modifier and dimethylaminopropylamine serving as a cross-linking agent. After the auxiliary additives such as the flame retardant, the antioxidant, the light stabilizer, the antistatic agent and the impact modifier are added during production and processing, the flame-retardant polyethylene plastic has flame retardance, oxidation resistance, ultraviolet absorption property, high mechanical properties and the like; and by the cross-linking agent, the stability of the additives and the polyethylene plastic can be adjusted, and the properties of the polyethylene plastic product are balanced.

The invention relates to an ultra-light halogen-free low-smoke flame-retardation ship cable, and the cable comprises conductors, insulating layers, a filling layer, a wrapping layer, a woven armored layer, and a sheath layer. The insulating layers wrap the conductors to form wire cores. A plurality of wire cores are twisted together to form a cable core. The wrapping layer sleeves the cable core, and the external surface of the wrapping layer is provided with the woven armored layer in a weaving manner. The sheath layer sleeves the woven armored layer. The cable is advantageous in that 1, the tensile strength of the cable is high; 2, the performance of resistance to high temperature is good; 3, the performance of resistance to corrosion is good; 4, the density is low, and the weight is light; 5, the electromagnetic compatibility of the cable is improved; 6, the temperature resistance level and current carrying capability of the cable can be improved.

The invention discloses a novel vehicle-mounted air conditioner. The novel vehicle-mounted air conditioner comprises a condenser, condenser pipelines, a compressor, a liquid storage dryer, a compressor pipeline, a dryer pipeline, expansion valves, an evaporator, a blower, a purifying dust removal device and an air conditioner air duct. The condenser is provided with the two condenser pipelines. One of the condenser pipelines is connected with the compressor, and the other condenser pipeline is connected with the liquid storage dryer. The compressor is provided with the compressor pipeline. Theliquid storage dryer is provided with the dryer pipeline. The compressor pipeline and the dryer pipeline are provided with the expansion valves. The tail ends of the compressor pipeline and the dryerpipeline are fixedly connected with the evaporator. The evaporator is provided with the blower. The evaporator is provided with the purifying dust removal device. The outer wall of one side of the purifying dust removal device is provided with the air conditioner air duct. The novel vehicle-mounted air conditioner has the characteristics of being capable of regulating temperature and humidity ina car and purifying, dusting and sterilizing air in the car, and convenient to disassemble and clean up.

The invention discloses a nourishing food made from avian embryo eggs, relating to a health food prepared with the avian embryo eggs to be hatched as main raw materials and a production technique thereof. The finished product is prepared by taking the avian embryo eggs to be hatched as the main raw materials through purification and slaking. As the avian embryo eggs to be hatched are taken as the raw materials for processing and utilization, the nourishing food of the avian embryo eggs pertains to a green natural food, with multiple effective ingredients and multifunctions of nourishing, health care and the like, and is easily absorbed by human body. The nourishing food of the avian embryo eggs contains more than ten kinds of amino acids required by human body, calcium of high content, multiplex vitamins, digestive enzymes, hormone, and the like, in particular, the content of the vitamin A can be higher by 15 percent than the grown poultry. The nourishing food made from the avian embryo eggs can improve health condition and human immunity, with relatively good health-care effect, simple and convenient processing technique, low equipment investment, low loss of effective ingredients in raw materials and relatively long quality preservation period of the product.

The invention discloses a steel bar welding device for pipe gallery construction, relates to the technical filed of steel bar cage welding, and aims to solve the technical problem that in the prior art, after a steel bar cage is welded and formed by a rolling welder, the steel bar cage is prone to shaking when discharging, resulting in affecting the strength of the steel bar cage. According to thekey points of the technical scheme, the steel bar welding device comprises a guide rail frame located on one side of the discharging direction of a rolling welding mechanism, a plurality of supporting seats slidably erected on the guide rail frame, adjusting frames arranged on the supporting seats, and a rubber seat, an arc-shaped groove for bearing the bottom of the steel bar cage is formed in the upper surface of the rubber seat, lifting assemblies for driving the rubber seat to rise and fall are arranged on the supporting seats, a plurality of elastic compression parts are uniformly arranged on the supporting seats around the circumference of the steel bar cage, and abutting assemblies for driving the elastic compression parts to abut against the outer wall of the steel bar cage are arranged on the adjusting frames. According to the steel bar welding device, the welded steel bar cage is stably supported, the vibration force produced when the steel bar cage is discharged can be effectively reduced, and the stability of the welding process is improved.

The invention discloses a cowherb seed flavonoid glycoside / bacterial cellulose dressing for treating diabetic foot ulcers, and relates to the field of a biological medical material and a preparation technology thereof. The preparation method comprises the following steps: dissolving a cowherb seed flavonoid glycoside medicine into a high molecular polymer solution to obtain a composite solution; adopting an immersion method to ensure that a bacterial cellulose film is immersed into the cowherb seed flavonoid glycoside / high molecular polymer solution; and performing ultraviolet crosslinking to obtain a cowherb seed flavonoid glycoside / bacterial cellulose composite film, wherein dressing is a hydrogel film prepared by compounding the high molecular polymer solution containing cowherb seed flavonoid glycoside with bacterial cellulose. The preparation process of the method disclosed by the invention is convenient to operate and low in cost, and the prepared wet hydrogel dressing for treating the diabetic foot ulcers has properties of resisting high-sugar damages, preserving moisture, absorbing the exudate of a wound, accelerating the healing of the wound, and the like. The cowherb seed flavonoid glycoside / bacterial cellulose dressing is suitable for repairing wounds of diabetic foot ulcers, lower extremity venous ulcers, pressure sores and the like.

The invention provides a method for preparing soybean milk fermented milk by lactobacillus strains capable of producing high-yield folic acid. The method comprises the following steps: inoculating screened strains LZ217 (Lactobacillus sakei LZ217) into fresh soybean milk and fermenting the mixture in a 37-DEG C constant-temperature fermentation box to obtain the soybean milk fermented milk which has rich natural folic acid. The side effect of chemically synthesizing folic acid in a traditional industry is eliminated, and the content of folic acid is remarkably increased when being compared with that of other products; and furthermore, folic acid synthesized by fermenting the fermented soybean milk has reducibility and can be absorbed by human bodies very well, so that folic acid needed by the human bodies can be effectively supplemented, and various types of body discomfort, caused by the fact that folic acid is lacked, are alleviated to a certain extent.

The invention relates to a foam extinguishing agent containing a biosurfactant and a preparation method for the foam extinguishing agent. The problems that an existing foam extinguishing agent is liable to pollute the environment and the preservation time is short are mainly solved. The foam extinguishing agent containing the biosurfactant comprises, by weight, 10%-30% of rhamnolipid, 3%-15% of sophorolipid, 0.1%-0.5% of a thickening agent, and the balance water. The preparation method for the foam extinguishing agent comprises the steps that under the stirring condition, the rhamnolipid is added into a certain amount of water, and after even stirring, the sophorolipid is added; after even mixing, the mixture is heated to 80 DEG C-90 DEG C in a reaction kettle; after the mixture is cooled to the room temperature, sodium alginate is dissolved with 10% of water and added to the reaction kettle; and the balance water is added as a complement, and the mixture is mixed evenly. According to the foam extinguishing agent containing the biosurfactant, the fire extinguishing performance of the extinguishing agent can be improved, fast biodegradation of pollutant in a place where a fire disaster occurs is achieved, and thus the environment is protected.

Disclosed is an FPC suitable for use in RFID media. Also disclosed are RFID media improved in production speed, rejection rate, electrical quality and product appearance, and a method for producing such RFID media. Specifically disclosed is a flexible printed circuit board which is produced by etching a laminate that is composed of a biaxially stretched polyester film having a thermal adhesive layer and a base layer formed by co-extrusion and a metal foil bonded to a surface of the biaxially stretched polyester film through the thermal adhesive layer. This flexible printed circuit board is characterized in that the base layer of the biaxially stretched polyester film has a melting point of 200-300 DEG C, and the thermal adhesive layer is made of a polyester resin containing a wax.