95results about How to "The market is well supplied" patented technology

The invention provides an electromagnetic shielding conductive coating and a preparation method thereof. The electromagnetic shielding conductive coating comprises film-forming substances, conductive powder, thickening agents, coupling agents and curing agents. The mass ratio of the film-forming substances to the conductive powder to the thickening agents to the coupling agents to the curing agents is 5-20:50-75:5-30:0.7-4:6.5-15. Auxiliaries are added into the film-forming substances and stirred to be completely dissolved, the thickening agents are added into mixture, the coupling agents are then added into the mixture, the conductive powder is added into the mixture after stirring, and the curing agents are added into the mixture, so that the electromagnetic shielding conductive coating is obtained. By means of composition and proportioning for the conductive coating, the prepared coating is excellent in electric conductivity and resistant to acid, alkaline and oxidization. Besides, the resistivity of the conductive coating prepared by the preparation method is continuously reduced, and conductive high molecular polymer for the conductive powder in the conductive coating is well compatible with organic resin, so that air bubbles and needle holes in the coating can be decreased.

The invention discloses a simultaneously-removing technology based on a semidry method, which has the following steps: (1) pretreatment for removing dust; (2) oxidation reaction between hydrogen peroxide and smoke gas: NO+H2O2=NO2+H2O, and 2NO+O2=2NO2, SO2+H2O2=SO3+H2O; (3) reaction in an absorption tower: Ca(OH)2+SO2=CaSO3.1 / 2H2O+1 / 2H2O, CaSO3.1 / 2H2O+1 / 2O2=CaSO4.1 / 2H2O; Ca(OH)2+H2O+NO2=Ca(NO3)2+2H2O, Ca(OH)2+2HCl=CaCl2+2H2O, and Ca(OH)2+2HF=CaF2+2H2O; (4) after the reaction, the smoke gas is discharged after dust removal. The technology has integrated design, and various pollutants, such as SO2, NOx, can be simultaneously removed in one reaction tower; the invention has the advantages of simple technology, simplified system, small area occupation and low investment and running cost; the system adopts a semidry technique, the water consumption is low, and the technology is particularly suitable for water-deficient areas; the market supply of quick lime or white lime used as system removing agents is abundant, and the removing agents are convenient to buy in local; byproducts belong to available resources; and the removing system can almost completely remove sulfur trioxide in smoke gas. Therefore, the whole device does not need corrosion prevention.

The invention discloses an aluminium / water reaction controllable-hydrogen catalyst. The aluminium / water reaction controllable-hydrogen catalyst comprises the following materials in percent by weight: (a) 75%-85% of metal aluminium powder; (b) 5%-12% of mixture of bismuth chloride, sodium chloride and potassium chloride; (c) 5%-15% of mixture of metal calcium powder and metal zinc powder. A preparation method of the catalyst comprises the steps of: (1) fully stirring according to the proportion with 90% of aluminium powder and 10% of bismuth chloride, sodium chloride and potassium chloride, and mixing into an Al-BiCl3 base material; (2) fully stirring according to the proportion with 90% of Al-BiCl3 base material and 10% of metal calcium powder and metal zinc powder, and mixing into an Al-BiCl3 main material; (3) putting the Al-BiCl3 main material into a ball mill to carry out ball-milling for more than 5 hours so as to prepare a high-activity Al-BiCl3 composite material; (4) mixing and stirring the high-activity Al-BiCl3 composite material and polyacrylamide aqueous solution, preparing into blocks and then drying.

The invention discloses a preparation method of 3-aminopiperidine and its derivative with optical activity and an application of the compound and its derivative in synthesis of a dipeptidyl peptidase-IV inhibitor Linagliptin. According to the preparation method, 3-aminopyridine is used as a raw material to prepare a compound I by 3- amino protection, catalytic hydrogenation reduction of pyridine ring and chiral reagent resolution, and deprotection is then carried out to obtain (R)-3-aminopiperidine hydrochloride II. In the application, a compound III prepared from the compound I is an important intermediate for synthesis of Linagliptin, and (R)-3-aminopiperidine hydrochloride II also can directly be used for synthesis of high-purity Linagliptin. The raw material used in the invention is low-cost and is easily-available in the market; each step is simple to operate; requirements on equipment are low; safety is high; and the preparation method is easy for industrial production.

The invention discloses a manufacturing method for tungsten cobalt hard alloy, it includes following steps: mixing, wetmilling, drying, mixing with forming agent, pressing and forming, eliminating forming agent, sintering, it selects Co powder whose Fisher particle size is (1.0-2.5) mu m, Cr3C2 powder whose Fisher particle size is (4.0-4.6) mu m and WC powder with (1.2-1.8) Fisher particle size. The weight percentage of Co Powder, Cr3C2 powder, WC powder are (7.0-7.5)%, (0.7-1.0)% and the residue. The hard alloy in the invention has excellent density and rigidity and the price is low.

The invention discloses a fly ash synthesized cement and a production method thereof. The cement is composed of the following components in percentage by weight: 50% to 90% of fly ash with a carbon content more than 5%, 5 to 40% of calcareous raw material, 1.5 to 10% of initiator, 1.5 to 10% of promoter, and 2 to 10% of corrector. The fly ash synthesized cement has the following advantages: (1) the discharge of sulfur dioxide is zero during the whole production process; (2) the production cost is reduced; (3) the cement strength is improved; (4) the residual carbon and combustible components in the raw materials can be burned; (5) the fuel cost can be saved, and the technology process is enhanced; (6) the residual carbon is taken as the fuel, thus the energy is saved, the cost is reduced, the environmental pollution is reduced, and the environment is protected; (7) the goals of decarbonization and dehydration can be achieved by burning, and moreover the adaptability of the production equipment on raw materials is improved; (8) in the milling procedure, the technology and equipment are identical with the present conventional cement clinker miller, and thus the modification and application of the technology and equipment are easy for the cement entrepreneurs; and (9) the sources of the raw materials and auxiliary materials are wide, the supply is sufficient in the market, and the selected equipment is matured and reliable and has strong universality.

The invention provides a high-barrier flexible back film. The high-barrier flexible back film mainly comprises a substrate film, aluminum foil, an uvioresistant coating, a protection film layer, and an adhesive layer; two sides of the aluminum foil are compounded with the substrate film through an adhesive respectively; the uvioresistant coating can be directly coated or sputtered outside a compound film; the protection film layer can be directly coated or compounded on the uvioresistant coating; and the adhesive layer is coated on the inner side of the compound film, so the high-barrier flexible back film can be obtained. In the high-barrier flexible back film, the aluminum foil is used as an intermediate layer and has an extremely high barrier property, so the high barrier requirement of novel flexible thin-film solar products such as Cu(InGa)Se2 (CIGS), OPV and the like can be met, and the aluminum foil can reflect light to improve the conversion efficiency of solar energy; moreover, the high-barrier flexible back film is mainly prepared by a compound process. The obtained solar cell back film has the extremely high barrier property and mechanical strength, and can protect a solar cell well; and the compound process is mainly adopted, a production process is simple, production technologies for all the materials are mature, and all the materials are low in cost. Therefore, the back film is high in scale yield, the cost of the back film is far lower than that of similar products on market, and due to the advantage of the flexibility of the back film, the characteristics of flexibility, thinness and the like of a thin film solar cell can be exerted well.

The invention discloses a polylactic acid composite solid resin with an electromagnetic shielding performance, and a production process thereof. The polylactic acid composite solid resin comprises the following components by mass content: 20.0% to 80.0% of polylactic acid resin, 0.1% to 10.0% of interface compatibility agent, 2.0% to 20.0% of plasticizer and 3.0% to 50.0% of electromagnetic shielding powder body. In polylactic acid ink, plastic and fiber materials added with the composite solid resin provided by the invention, the electromagnetic shielding powder body is uniformly dispersed, and has no negative impact on mechanical properties of materials. The polylactic acid composite solid resin has a good electrostatic shielding performance, lower cost and broad prospects in industrial application.

The invention discloses a traditional Chinese medicine compound external-application preparation for treating cicatrix. The effective parts, which are obtained through traditional Chinese medicine compound extraction, of the traditional Chinese medicine compound external-application preparation comprise the following Chinese herbal medicine by weight: 5-70g of Japanese yam rhizome, 5-70g of Chinese honeylocust spine, 5-60g of trogopterus dung, 5-60g of szechwan lovage rhizome, 5-60g of Chinese angelica root and 5-60g of gall nut. The invention further discloses a preparation method and application of the preparation. The preparation is simple in prescription formulating and accords with traditional Chinese medicine theories; the preparation is simple in extraction process and high in effective ingredient content; and the introduction of noneffective ingredients is reduced, so that the preparation is scientific in process; and moreover, the transmittance of the effective ingredients in lesion tissue is high, the animal experiment and human body trial effects are remarkable, and no adverse reaction occurs.

The present invention relates to a motor servosystem hydroturbine governor without hydraulic mechanism. It is mainly formed from electric controller, electric servodriver, guide blade driving motor and mechanical driving mechanism. Said invention is characterized by that on the above-mentioned single-regulated motor servosystem hydroturbine governor without hydraulic mechanism a double-regulated motor servosystem hydroturbine governor without hydraulic mechanism which is formed from carbon brush group, slide ring group, blade driving motor and mechanical driving mechanism is added. Said invention is simple in structure, high in reliability and small in volume, and can use DC power supply of hydraulic power station as stand-by cenergy source.

The invention provides a nylon composite for a fuel tank and a preparation method of the nylon composite. The nylon composite for the fuel tank is prepared from raw materials in percentage by weight as shown in the description, wherein the PA6T copolymer is a PA6T and PA6 copolymer with PA6T content not lower than 70%, a modifier is selected from at least one of HDPE and HDPE-MAH and an elastomeris selected from at least one of SEBS and SEBS-MAH. The PA6T copolymer has better heat resistance and can obviously reduce the fuel permeability of the material, meanwhile, the PA6T with the content not lower than 70% can effectively block permeation and diffusion speeds of fuel molecules. The HDPE and HDPE-MAH modifier can improve melt strength of the PA6 and PA6T copolymer at low temperature, sothat the formed fuel tank has higher impact strength at low temperature. The SEBS and SEBS-MAH elastomer can improve compatibility of the PA6 and PA6T copolymer and the modifier, the PA6 and PA6T copolymer can be well compatible with the modifier, and various excellent properties of the nylon composite of the fuel tank are guaranteed.

The heat sensitive made polarized hidden image starts from making polarized light reflective plate, printing reflective layer on the back of the polarized plate of the usual photographic display, selecting stretch way produced plastic film to make polarized image carrier, applying heat sensitive treatment to the polarized image carrier, on which instantly heating the profile of the image with the temperature being the marginal one to make it change from solid to liquid, with the heated molecules moving aimlessly, confounding the neat and polarized media feature of the stretch made molecule, losing polarized effect to change into common transparent film, combining the heated image carrier thin film to the polarized reflective plate to form its hidden image. It is convenient in material selection, with sufficient supply of the polarized plate and the stretch plastic film market, clearer pattern than printing, simple of equipment and low in production cost.

The invention relates to a method for preparing high-purity gallnut catechin gallate (GCG). The method comprises the steps of firstly, taking a green tea polyphenol sample, and adding solvent for dissolution; then taking a proper amount of a tea polyphenol dissolving sample, placing the tea polyphenol dissolving sample in a closed container, and conducting high temperature conversion; then taking conversion liquid, conducting separation with a rapid preparative liquid chromatography, and collecting GCG fraction; making the fraction be subjected to evaporation and concentration, so that a GCG monomeric compound crude product is obtained; finally, taking a proper amount of the crude product, and adding solvent for dissolution; conducting separation and purification on the monomeric compound crude product with a high pressure preparative liquid chromatography, and collecting GCG fraction; then making the fraction be subjected to rotary evaporation and concentration, freeze-drying and vacuum drying, so that a GCG monomeric compound is obtained. According to the method, the high temperature conversion method is adopted, and the content of gallnut catechin gallate (GCG) in a green tea polyphenol solution is raised.

The invention discloses traditional Chinese medicinal capsules for treating headache, which is prepared from the following raw materials: white paeony root, nutgrass galingale rhizome, baical skullcap root, liquoric root, mint, bupleurum, chrysanthemum, szechuan lovage rhizome, Indian buead, Chinese angelica, angelica dahurica, cortex moutan and other traditional Chinese medicines. The manufacturing process of the traditional Chinese medicinal capsules combines modern and traditional methods. The traditional Chinese medicinal capsules have the effects of activating blood, removing stasis, reducing blood viscosity, clearing heat, detoxifying, soothing the nerves, relieving depression, and relieving dizziness and pain. The raw materials are all nature pure traditional Chinese medicines. Clinic experiments prove that the total effectiveness of the traditional Chinese medicinal capsules is 94 percent, and are traditional Chinese patent medicines for treating headache, which address both the symptoms and root causes, have high quality and low price, and prevent relapse after cure.

The invention discloses a flexible transparent high-barrier packaging membrane, which includes barrier membranes, an adhesive layer and an anti-ultraviolet layer, wherein the barrier membranes include a barrier membrane I and a barrier membrane II; a nano-material with water absorption and oxygen absorption performances is added into the adhesive layer; the barrier membrane I and the barrier membrane II are compounded through the adhesive layer to prepare a composite membrane; the anti-ultraviolet layer can be directly coated or sputtered on the composite membrane. The packaging membrane has high barrier performance, and also has a simple entire production process, high production line speed, a mature raw material production technology and low cost; and thus, the scale-up production is high, and the product cost is far away lower than that of the similar products on the current market. Most importantly, the product can make up for the critical defect of sharply declined barrier performance caused by cracks produced in production and application of the similar product barrier layers.

The invention relates to a preparation method of 2-hydroxybenzophenone derivative base silane. The method includes the following steps that a 2-hydroxybenzophenone derivative, epoxy silane and an appropriate quantity of solvent are added into a reaction kettle and stirred, the temperature is raised to 70-100 DEG C after the reactants are completely dissolved, an appropriate quantity of base catalyst is put into the reaction kettle, a heat preservation reaction is conducted for 3-8 h, then the reaction temperature is lowered to be below 50 DEG C, deionized water is added to perform washing several times, the solvent is separated out through reduced pressure distillation, and light yellow to amber thick liquid, namely, the 2-hydroxybenzophenone derivative base silane is obtained. The adopted raw materials are sufficient in the market, the product cost is low, and the obtained 2-hydroxybenzophenone derivative base silane has a good absorption effect on 280-400 nm ultraviolet light and can be reacted with the surfaces of metal, glass, wood, ceramic, silicate, plastic and other materials to form a film with ultraviolet light absorption and light curing functions.

The invention relates to a polarization concealed image and a preparing method thereof. The method comprises first providing a winding film to serve as a carrier for the concealed image, then obtaining a pattern required to be concealed on the carrier for the concealed image through a heating and press printing method, further compositing the carrier for the concealed image after heating and press printing treatment onto a polarization material, lastly compositing a reflection layer onto one face of the polarization material without the carrier for the concealed image, and obtaining the polarization concealed image.

The invention discloses a traditional Chinese medicine suppository for treating haemorrhoids. The traditional Chinese medicine suppository comprises a traditional Chinese medicine composition, vegetable oil and a matrix, wherein the traditional Chinese medicine composition includes, by weight, 0.6-2.0 parts of cortex phellodendri, 0.6-2.0 parts of rhizoma coptidis, 0.6-2.0 parts of radix scutellariae, 0.6-2.0 parts of radix et rhizoma rhei, 0.6-2.0 parts of honeysuckle flowers, 0.6-2.0 parts of radix sanguisorbae, 0.6-2.0 parts of galla chinensis and 0.3-1.0 part of borneol; the vegetable oil is colza oil, soybean oil and / or sesame oil; and the matrix is cocoa butter, acrawax and / or mixed fatty acid glyceride. The invention further discloses a preparation method for the traditional Chinese medicine suppository for treating haemorrhoids. The obtained traditional Chinese medicine suppository adopts the common traditional Chinese medicinal materials and is low in price, high in anti-infection performance, rapid in pain stopping and swelling removing speed, good in curative effect and suitable for treatment during an internal hemorrhoids operation and treatment after the internal hemorrhoids operation, and no toxic or side effect is caused.

The invention discloses a synthesis method for 2,3,5,6-tetrafluorophenol, and belongs to the technical field of chemical synthesis. The synthesis method is characterized by comprising the following steps: (1) enabling reaction between 1,2,4,5-tetrafluorobenzene and an organic lithium agent in an inert solvent at low temperature to obtain an aryl lithium intermediate; enabling reaction between the obtained aryl lithium intermediate and boric acid ester at low temperature to obtain 2,3,5,6-tetrafluorobenzeneboronic acid and 2,3,5,6-tetrafluorobenzeneboronic acid ester through acid water quenching; (2) enabling reaction between the obtained 2,3,5,6-tetrafluorobenzeneboronic acid and 2,3,5,6-tetrafluorobenzeneboronic acid ester and hydrogen peroxide in an acidic aqueous system so as to obtain the 2,3,5,6-tetrafluorophenol. The synthesis method has the advantages that the raw materials are low in cost and easy to obtain, the synthesis steps are short, the reaction yield is high, and the product purity is good; the synthesis method is suitable for industrial application.

The invention discloses traditional Chinese medicine paste for treating hemorrhoids. The traditional Chinese medicine paste comprises a traditional Chinese medicine composition, vegetable oil and a matrix. The traditional Chinese medicine composition comprises, by weight, 0.6 to 2.0 portions of phellodendron, 0.6 to 2.0 portions of coptis root, 0.6 to 2.0 portions of radix scutellariae, 0.6 to 2.0 portions of rhubarb, 0.6 to 2.0 portions of honeysuckle, 0.6 to 2.0 portions of radix sanguisorbae, 0.6 to 2.0 portions of Chinese gall and 0.3 to 1.0 portion of borneol. Vegetable oil is rapeseed oil, soybean oil or sesame oil. The matrix comprises one or more of albolene, beeswax, stearic acid, lanolin, hydrogenated vegetable oil, dimethicone, glycerol, gelatin, polyethylene glycol 4000 and polyethylene glycol 6000. The traditional Chinese medicine paste is prepared from common traditional Chinese medicines, has a cheap price, high infection resistance, a fast rate of eliminating swelling and alleviating pain, good curative effects and no toxic or side effect and is suitable for treatment on external hemorrhoid, internal hemorrhoid and mixed hemorrhoid and cure after a hemorrhoid operation.

The invention relates to a traditional Chinese medicinal preparation for health care and quality improvement of tobacco, and a use method thereof, and belongs to the technical field of tobacco cultivation. Natural propolis, artificially cultivated and produced Ganoderma lucidum powder, natural cinnamon bark powder and Chinese magnoliavine powder are mixed according to a mass ratio of (1-10):(20-50):(25-45):(15-35), the obtained mixture is immersed in clean water for 4-6 h, the mixture and the water are boiled, then are decocted above medium fire for 30-60 min, and then are cooled to room temperature, and the obtained cooled solution is filtered by a two-layer common gauze to obtain a filtrate for later use; and each 10-25 g / 666.7 m<2> of a penetrant calcium dodecylbenzene sulfonate is added to 300-1000 g / 666.7 m<2> of the filtrate, the filtrate and the penetrant are blended with clean water until the concentration of the filtrate is 1-3%, and the finally obtained solution is applied once every 10-20 days for multiple times to the leaf surfaces of tobacco leaves which are transplanted 30 days earlier. The traditional Chinese medicinal preparation can promote the vigorous growth of tobacco plants, enhance the resistance of the tobacco plants to adverse environment and improve the ripening resistance and the baking resistance of the tobacco leaves, so the aroma substance content,the level proportion, the yield and the quality of the tobacco leaves are improved.

The invention relates to a palm oil based pipe free agent and a preparation method thereof. The pipe free agent is composed of the following components in parts by weight: 4 to 6 parts of organic soil, 0 to 4 parts of filtrate loss reducer, 4 to 5 parts of emulsifier, 1 to 3 parts of rapid osmotic agent, 1 to 3 parts of oleic acid, 60 to 90 parts of base oil, and 0 to 30 parts of water phase. The pipe free agent has the following advantages: (1) environment-friendly and easily available palm oil is taken as the basic liquid of the pipe free agent, the obtained palm oil based pipe free agent has an excellent pipe free performance and the pollution to the strata is reduced; (2) a rapid osmotic agent is added, the soaking time of the pipe free agent is shortened, the shortage of long soaking time of other pipe free agents is overcome, and the pipe free efficiency is higher; and (3) the used reagents are sufficient on the market, the self made reagents are easily available, the raw materials are abundant and easy to purchase, the time for the pipe free operation is reduced, and the drilling efficiency is improved.

The invention discloses a preparation method of 3-azabicyclo[3.1.0]hexane hydrochloride, compound II as a raw material is reacted with an acetic acid solution and zinc powder under heating to obtain areaction liquid containing compound III, the reaction liquid containing the compound III is further treated with a base to obtain a treatment liquid containing compound IV, the treatment liquid containing the compound IV is then reacted with hydrogen chloride gas to obtain the 3-azabicyclo[3.1.0]hexane hydrochloride. Compared with the prior art, the preparation process is simple, the reaction condition is mild, and the cost is low. At the same time, the total yield of the preparation process can reach 71%.

The invention discloses a method for retarding and scattering running water through a bamboo fence. The bamboo fence is composed of fence piles and a fence row and used for improving the stability of a slope with exposed soil. The method includes the following steps that 1, bamboo segments 4 cm-7 cm thick and 80 cm-100 cm long are made through cutting, the lower ends of the bamboo segments are cut into a horse ear shape, the upper ends of the bamboo segments are cushioned and rammed into soil, and the exterior of each bamboo segment is retained by 30 cm-40 cm, so that the fence piles are formed; 2, the fence piles are driven into a row along the isoheight of the slope, wherein the distance between the piles ranges from 70 cm to 100 cm; 3, thin bamboo poles 1 cm-1.5 cm thick are transversely placed and stacked side by side to form the fence row, the thin bamboo poles are sequentially interwoven upwards among the fence piles one by one from the ground surface, the top end of the fence row is pressed to make the bamboo poles abut against one another, and then the fence row and the fence piles are firmly bundled through bamboo pieces, wherein the height of the fence row ranges from 10 cm to 20 cm; 4, surface soil above the fence row is arranged to fill the gap between the fence row and the ground; 5, an additional pile is needed at the place where the bamboo fence stretches over an erosion gully, and thin bamboo segments are densely arranged to serve as auxiliary pipes till the gully is full of the thin bamboo segments in the width direction, wherein the pile body is higher than the edge of the gully by 30 cm.

The invention discloses a traditional Chinese medicinal ointment for treating hemorrhoid. The traditional Chinese medicinal ointment for treating hemorrhoid comprises the following raw materials: a traditional Chinese medicine composition, a vegetable oil and a substrate, wherein the traditional Chinese medicine composition comprises the following components in parts by weight: 0.6-2.0 parts of Cortex Phellodendri, 0.6-2.0 parts of Rhizoma Coptidis, 0.6-2.0 parts of Rhizoma Polygoni Cuspidati, 0.6-2.0 parts of Radix Et Rhizoma Rhei, 0.6-2.0 parts of Flos Lonicerae, 0.6-2.0 parts of Radix Sanguisorbae, 0.6-2.0 parts of Galla Chinensis and 0.3-1.0 part of Radix Astragali. The vegetable oil is rapeseed oil, soybean oil and / or sesame oil; and the substrate comprises albolene, beeswax, stearic acid, lanolin, dimeticone, glycerine, gelatin and / or polyethylene glycol. The invention further discloses a preparation method of the traditional Chinese medicinal ointment for treating hemorrhoid. The obtained traditional Chinese medicinal ointment is prepared from common traditional Chinese medicinal materials, is low in price, high in anti-infection property, high in pain stopping and swelling subduing speed and good in curative effect, does not have toxic or side effects, and is suitable for treating external hemorrhoid, internal hemorrhoid, mixed hemorrhoid and postoperation of hemorrhoid.

The invention brings forward a pharmaceutical composition containing fesoterodine and a preparation method thereof. The pharmaceutical composition also comprises a stabilizing agent, which is dextrin, maltodextrin, mannitol, propylene glycol and / or cane sugar. The preparation method of the pharmaceutical composition comprises steps of sieving, mixing, wetting, granulating, drying, tabletting and coating. According to the pharmaceutical composition, the problem that fesoterodine is easy to decompose under conditions of high temperature and high humidity is solved, and the problem that a medicinal excipient in an existing pharmaceutical composition containing fesoterodine has side effect on intestines and stomach is also solved.

The invention relates to a spunlace non-woven fabric, which is provided with a plurality of spunlace points, and comprises an upper surface fiber layer, a lower surface fiber layer, an upper surface fiber layer and a lower surface fiber layer, and a lower surface fibrous layer, the upper surface fibrous layer and the lower surface fibrous layer entangled with each other at the plurality of spunlace points of the spunlace nonwoven fabric, the lower surface fibrous layer comprising bi-component staple fibers. According to the spunlace non-woven fabric, the skin feeling of a wearer is dry and comfortable, and meanwhile the cotton fibers and the bi-component short fibers are contained in the fiber mixing layer; the spunlace non-woven fabric with the upper surface fiber layer and the lower surface fiber layer which are mutually entangled at the spunlace points has better bonding performance, especially heat bonding or ultrasonic bonding performance on the lower surface fiber layer side, so that the spunlace non-woven fabric can be better compounded with other materials or can be more conveniently formed into a sanitary absorbing product; meanwhile, the fiber layer of the lower surface layer is made of bi-component short fibers, so that the dryness of the sanitary absorption product can be improved.

The invention discloses a fly ash for cement production or concrete admixture. The fly ash for cement production or concrete admixture comprises 90-98% of original fly ash, 1-10% of a combustion improver and 0.1-10% of an adhesive. The fly ash for cement production or concrete admixture has the following advantages: 1, a mineral adhesive or an organic adhesive is selected as an auxiliary raw material, so a problem that the original fly ash cannot be molded is solved; 2, the combustion of residual carbon in the original fly ash is realized against the problems of poor original fly ash permeability, no pass-through of combustion air and no discharge of flue gas; 3, the residual carbon in the original fly ash is used as a fuel, so energy is saved, and environmental protection is facilitated; 4, secondary emission of solid wastes is reduced; 5, raw materials and the auxiliary raw material selected in the invention have wide sources, and have ample supply on the market; and 6, a device selected in the invention is mature and reliable, and has strong versatility.

The invention provides a method for preparing adenosine, which comprises the step of carrying out hydrolysis reaction on adenylic acid in a protonic solvent under an acidic buffer system. According to the preparation method disclosed by the invention, a specific acidity buffer system is used as a hydrolysis condition, efficient hydrolysis of adenosine is realized, and the prepared product is high in purity and reasonable in yield.