39results about How to "Change dosage" patented technology

The invention belongs to the technical field of sealing materials and relates to a method for preparing polyurethane / rubber interpenetrating network type water-swellable rubber. The method comprises the following steps: firstly, mixing rubber and super-absorbent resin for 10 to 40 minutes in an open mill; further adding solid softener, colorant, anti-ager and promoter to the open mill, and mixing for 10 to 40 minutes; then, adding zinc oxide, reinforcing agent and plasticizer to the open mill, and mixing for 10 to 50 minutes; further adding vulcanizer to the open mill, and mixing to obtain a mixture A; evenly mixing polyethylene glycol and MDI (methyl-di-p-phenylene isocyanate) by equal molar weight to obtain a mixture B; blending the mixture A and the mixture B in the open mill to obtain a product; and finally, vulcanizing the product in a mold on a plate vulcanization machine with the temperature and pressure being respectively controlled at 150 to 160 DEG C and at 10MPa to 15MPa, to obtain the interpenetrating network type water-swellable rubber. The method of the invention has the advantages of simple preparation process, high product expansion ratio, high ion resistance and controllable water absorption rate and mechanical properties.

According to the invention, based on Illumina common tag library sequencing and methylation normal sequencing and combining a common library tag sequencing method, a new method for accurate detection of whole genome methylation sites by utilizing trace genome DNA (deoxyribonucleic acid) is built. According to the method, in the construction of a methylation library by using trace genome DNA, exogenous DNA is innovatively added to carry out bisulfite high-efficiency co-treatment; and at the same time, fragment size selection is not needed, and PCR (polymerase chain reaction) amplification is directly carried out after bisulfite treatment. By the method, the defects that in the common methylation sequencing, samples can not be mixed, the PCR amplification efficiency is low and the trace DNAsample can not be researched are overcome.

The invention relates to a method for adjusting and controlling the diameter of a silver nanowire through the dosage of sodium chloride. The method is realized through the following measures: (1) 0.47 g of silver nitrate, 0.2 mL of water and 1mL of glycerin are mixed and dissolved at the room temperature to be prepared into a solution A; (2) 1-100 mg of sodium chloride, 2.1 g of polyvinylpyrrolidone and 59 mL of glycerin are successively added to a three-neck round-bottomed flask of 250 mL so as to be prepared into a solution B; (3) the solution A is added into the solution B, heat preservation is performed for 15 minutes to 4 hours at the temperature of 160-200 DEG C, centrifugation is performed on the reaction liquid, and lower-layer sediment is cleaned so as to obtain the silver nanowire. The method disclosed by the invention uses a polyalcohol reduction method as a basis, and the diameter of the metal silver nanowire can be conveniently adjusted and controlled by simply changing one parameter, namely the dosage of the sodium chloride; the preparation process is simple, the protection of inert gas is not needed, the reaction conditions are mild, the cost is low, and used chemical medicines are green, environmental friendly and harmfulless, so that the method is suitable for large-scale industrialized production.

The invention provides a superabsorbent polymer composite comprising superabsorbent polymers and cellulosic nanofibrils having a diameter equal to or less than 100nm. The composite may be in the form of particles or a foam. Methods for producing the composite and absorbent articles comprising the superabsorbent polymer composite are also provided.

A functional magnetic separating rod is prepared through providing a short rod made of RE and permanent magnet, coating a high-molecular layer on its surface to obtain a magnetic rod, and magnetically attaching the functional magnetic polymer microparticles onto its surface to become a functional magnetic separating rod.

The invention discloses a method for removing halogenated nitrogen-containing sterilization side products from drinking water. The method comprises the following steps of: (a) adding hydrogen peroxide, peroxysulphate and carbonate into the drinking water and uniform mixing to obtain a mixed solution, wherein the initial concentration of the hydrogen peroxide in the drinking water is controlled at 20-60mu M, the initial concentration of the carbonate is controlled at 1-10mM, and the molar concentration ratio of the hydrogen peroxide to the peroxysulphate is controlled at 1: (1-5); (b) transferring the mixed solution to a catalyst bed to carry out a contact reaction, wherein the empty bed contact time of the mixed solution inside the catalyst bed is 20 minutes-35minutes, and the catalyst bed is filled with a catalyst with a hydroxylated surface The method disclosed by the invention is mild in use condition, economical, free from secondary pollution, and high in efficiency of removing the halogenated nitrogen-containing sterilization side product from the drinking water.

The invention discloses a method for preparing magnetic mesoporous silica composite nanoparticles of a yolk-eggshell structure. The method comprises the following steps: by taking magnetic Fe3O4 nanoparticles as a core, and formaldehyde and resorcinol as carbon sources, implementing a copolymerization reaction to coat surfaces of the magnetic Fe3O4 nanoparticles by a generated phenolic resin; implementing a sol-gel technique to coat the surface of the phenolic resin by mesoporous silica; finally implementing roasting to remove the phenolic resin, thereby obtaining the magnetic mesoporous silica composite nanoparticles of the yolk-eggshell structure. The preparation method disclosed by the invention is simple to operate and easy in raw material obtaining, the prepared magnetic mesoporous silica composite nanoparticles of the yolk-eggshell structure are rich in mesoporous structures on surfaces, have large specific surface areas and adjustable cavity sizes and micro structures, and havewide application prospects in fields such as catalysis, adsorption and drug delivery.

The invention discloses a one-component heat curing polyurethane mixed component which is prepared from the components in parts by weight: 100 parts of a modified polyurethane oligomer, 50-200 parts of an active compound, a polymerization inhibitor and a radical initiator, wherein the polymerization inhibitor is 0.3-0.7% of the sum of the mass of the modified polyurethane oligomer and the active compound, and the radical initiator is 0.2-0.8% of the sum of the mass of the modified polyurethane oligomer and the active compound; and the modified polyurethane oligomer is prepared by polymerization reaction of a diisocyanate and a polycaprolactone with single and double bond termination, and the molar ratio of NCO / OH in the raw material is 0.8-1.1. Various additives and fillers can be added according to different purposes of use; and the one-component heat curing polyurethane mixed component can be stably stored at room temperature without hardening, is rapidly solidified when heated to 80DEG C or above, and is suitable for production process with different viscosity and long operation time.

The invention relates to an environment-friendly water-based gravure ink and a preparation method thereof. The environment-friendly water-based gravure ink is prepared from the following materials inparts by weight: 30 to 40 parts of water-based polymer, 20 to 30 parts of organic pigment, 0.05 to 0.15 part of defoaming agent, 0.3 to 0.9 part of hydrophobic agent, 0.1 to 0.6 part of leveling agent, 0.1 to 1 part of water-based anti-settling agent, 1 to 2 parts of pH stabilizer, 1 to 2 parts of filler and 10 to 40 parts of deionized water. According to the environment-friendly water-based gravure ink and the preparation method thereof provided by the invention, processed by the advanced formula, the environment-friendly water-based gravure ink has the advantages of good printing effect, high adhesion, non-ignitability, inexplosiveness, non-toxicity and the like, does not impair the health of pressmen, and does not pollute the atmospheric environment, so the environment-friendly water-based gravure ink is a preferred environment-friendly water-based ink; the environment-friendly water-based gravure ink has good stability and heat resistance, and cannot be faded under a harsh environment after a long time, and the use of the filler and the leveling agent improves printing leveling, improves color saturation, and improves the wear resistance of the ink to a certain degree; moreover, the environment-friendly water-based gravure ink has extremely high grinding consistency, the usage of conventional ink is changed, and the cost in use is reduced.

The invention discloses a preparation method of a thickness controllable WO3 nano sheet for a trimethylamine gas sensor, and belongs to the field of gas sensors. The thickness of the WO3 nano sheet can be regulated from about 10 nm to about 5nm. According to the invention, a method of adopting dual surfactants is carried out, and the thickness of the WO3 nano sheet can be controlled through the regulation of preparation conditions such as the initial reaction temperature, the usage amounts of sodium oleate and sodium caprylate, the concentration and usage amount of nitric acid and sodium tungstate, the temperature preservation time, the stirring time and the like. The thickness controllable WO3 nano sheet prepared by the method is used as a coating material of a gas sensor and achieves a good effect in detecting trimethylamine. When the thickness of the nano sheet is 5 nm, the response to trimethylamine (TEA) is good at a temperature of 25 DEG C, and when the TEA content is 250 ppm, the response value is 8.2, and the selectivity is good.

The invention provides a preparation method of a low-temperature phosphorus-doped carbon nitride loaded high-dispersion palladium hydrogen evolution catalyst and a product and application thereof. Thepreparation method of the phosphorus-doped carbon nitride loaded high-dispersion metal Pd particle hydrogen evolution catalyst is relatively simple in synthesis method, low in cost and capable of reacting at a low temperature. According to the invention, phosphorus is doped into a carbon nitride substrate, so that the Schottky barrier of the heterojunction is improved, meanwhile, by means of theaction of lone pair electrons of nitrogen and metal Pd, the dispersity of Pd nano particles is improved to a great extent, and loss of Pd is reduced. By improving the Schottky heterojunction barrier,more free electrons can flow to the Pd nano particles from the phosphorus-doped carbon nitride substrate, so that the electron aggregation of the Pd nano particles is greatly improved. The prepared phosphorus-doped carbon nitride loaded Pd metal nano-catalyst can be used in borane ammonia hydrogen evolution reaction, and the catalyst shows very high catalytic activity under visible light irradiation.

The invention discloses a preparation method of a novel photocatalyst applied to photocatalytic reduction of CO2. The method mainly comprises building a hollow cake-shaped Bi4V2O11 nanostructure and growing Bi quantum dots on the surface of Bi4V2O11 in situ. The preparation method comprises the following steps: synthetizing the hollow cake-shaped Bi4V2O11 nanostructure by using a solvothermal method; and carrying out hydrothermal reaction on the prepared Bi4V2O11 and a reducer to obtain a Bi4V2O11(Bi / Bi4V2O11) composite nanostructure modified by the Bi quantum dots. The composite nanostructurehas larger specific surface area and can provide more active sites for photocatalytic reaction; meanwhile, the Bi quantum dots have quantum confinement effect and can directly reduce CO2 effectively.According to the Bi / Bi4V2O11 composite photocatalyst, a synergistic effect of Bi4V2O11 and Bi is utilized, so that the photoresponse range is expanded and the separation efficiency of photo-induced electron-hole pairs is improved; meanwhile, direct reaction between the Bi quantum dots and CO2 is used for improving conversion rate of the photocatalytic reduction of CO2; in addition, the compositematerial is simple in synthesis method and has broad prospects in the field of photocatalytic materials.

The invention provides an ABS chromium-free coarsening solution. The coarsening solution is an aqueous solution containing manganese sulfate, sulfuric acid, phosphoric acid and methanesulfonic acid. The invention further provides a coarsening method of the chromium-free coarsening solution for ABS plastic. The prepared chromium-free coarsening solution is electrolyzed by an electrolysis device, the ABS plastic is placed in the coarsening solution for chemical coarsening, and the chromium-free coarsening solution needs to be connected with evaporation equipment so as to maintain the specific gravity of the solution. According to the coarsening solution, the environmental pollution caused by conventional chromium acid coarsening and the use of explosive raw materials such as potassium permanganate are avoided, the coarsening method improves the stability of coarsening liquid and coarsening capability, and the ABS chromium-free coarsening solution has good coarsening effect and industrialapplication value.

The invention relates to preparation of a novel flame retardant and application of the novel flame retardant in a flame-retardant adhesive. The flame retardant is prepared from an amino-containing organic compound through a one-step reaction, the synthesis conditions are simple and controllable, and the synthesis efficiency is high; and after the flame retardant and the adhesive are blended, the high-flame-retardant adhesive can be obtained. The high-flame-retardant adhesive synthesized by the invention can be directly used as an adhesive of a high polymer material, and has high bonding strength; the adhesive can also be used as a basic formula, and can be used as a composite adhesive after other fillers are added; and the high-flame-retardant adhesive can also be used as a bottom coating agent to realize surface modification of a high polymer material so as to meet different requirements of various special occasions.

The present invention is one kind of blood sugar reducing balsam pear-bean product and its making process, and aims at increasing the nutritious components and health functions of bean product. The blood sugar reducing balsam pear-bean product is produced with soybean milk, balsam pear juice, Chinese yam juice and tuckahoe juice in certain volume proportion. It may be made into blood sugar reducing balsam pear bean curd, dried blood sugar reducing balsam pear bean curd, blood sugar reducing balsam pear bean curd jelly, blood sugar reducing balsam pear bean milk and other forms.

The invention discloses steamed stuffed bun processing equipment, and relates to the technical field of food processing equipment. The steamed stuffed bun processing equipment comprises a dough kneading mechanism, a dough conveying mechanism, a wrapper pressing mechanism, a forming platform, a stuffing conveying mechanism, a forming mechanism and a leading-out mechanism, wherein a dough inlet is formed in the upper part of one end of the dough kneading mechanism; a strip forming unit in the dough conveying mechanism is longitudinally arranged, and the top end of the strip forming unit is communicated with the tail end of the dough kneading mechanism; a dough kneading unit is arranged on the bottom end of the strip forming unit; a conveyor belt is transversely arranged, the start end of the conveyor belt is arranged under the strip forming unit, and the forming platform is arranged on the tail end of the conveyor belt; the wrapper pressing mechanism is arranged above the forming platform; the stuffing conveying mechanism is arranged above the wrapper pressing mechanism; a stuffing conveying pipe of the stuffing conveying mechanism is arranged in the wrapper pressing mechanism in a stretching way; the forming mechanism is arranged on the forming platform and is used for enabling prepared steam stuffed bun wrappers and prepared stuffing to form steam stuffed buns; the leading-out mechanism is used for leading the steam stuffed buns out the forming platform. A preparation method of handmade steamed stuffed buns is simulated, the steamed stuffed buns having the same taste of the handmade steamed stuffed buns can be prepared, the operation is simple, and the use is convenient.

The invention relates to the field of biomedical engineering, and discloses an injectable colored gel pad for gastrointestinal mucosa delamination and application thereof. A fibroin solution, a chitosan solution or a gelatin solution is firstly injected into the submucosa of the digestive tract; and then, a genipin solution containing disodium glycerophosphate is injected into the submucosa of thedigestive tract; and a gel pad is formed in the submucosa of the digestive tract after a cross-linking reaction occurs, and is used for separating a pathological mucosal layer from a muscle layer tofacilitate the dissection of the pathological mucosal layer. The forming time of the gel pad is controlled by controlling the dosage of the genipin and the disodium glycerophosphate in the genipin solution. The injectable colored gel pad for gastrointestinal mucosa delamination has the advantages that used materials are all liquid materials with low cytotoxicity and high biocompatibility; the formed gel pad is dark blue, so that pathological tissues can be clearly marked, and the submucosal dissection operation is more convenient and safer; a good clinical use effect is achieved; and the injectable colored gel pad is worthy of clinical popularization.

The invention discloses a polyvinyl chloride modified asphalt waterproof roll and a preparation method thereof. According to the polyvinyl chloride modified asphalt waterproof roll, petroleum asphalt is used as a base material and an extrusion and calendaring formation method is carried out in the presence of polyvinyl chloride, filler and aids to obtain the polyvinyl chloride modified asphalt waterproof roll. The polyvinyl chloride modified asphalt waterproof roll has various excellent comprehensive economical and technical performance indexes such as excellent weatherability, high tensile strength, high elongation, ageing resistance, strong deformation adaptability, wide temperature adaptation range, high bond strength, long service life, non pollution, easiness in construction and low cost and can be used in waterproof engineering of passenger special line deck concrete, metros, roads, port terminals and underground large projects.

The invention relates to a method for extracting magnesium oxide from desulfurization wastewater produced from magnesium desulfurization. The method comprises the following process steps: (1) enablingsintering desulfurization wastewater produced by magnesium desulfurization to directly react with ammonium hydroxide in a device of 40-60 DEG C, producing a magnesium hydroxide precipitate, aging for0.5-1.5 hours, and filtering to obtain a magnesium hydroxide solid; (2) washing the magnesium hydroxide obtained in the step (1) with distilled water for 4-8 times, and drying to obtain a magnesium oxide solid; (3) calcining the magnesium hydroxide washed in the step (2) at the temperature of 700-900 DEG C to obtain magnesium oxide, returning the obtained magnesium oxide to a sintering desulfurization system to be used, so as to complete a cycle. Magnesium resources are recycled. Moreover, pollution to a water body caused by the desulfurization wastewater is avoided, the operating cost of enterprises is greatly reduced, and even a certain cycling economy efficiency is achieved.

The invention relates to a radiation-proof high-integrity container and a preparation method thereof. The radiation-proof high-integrity container comprises an outer wall, a middle shielding layer andan inner wall, the outer wall and the inner wall are made of a material A, and the middle shielding layer is made of a material B, wherein the material A comprises the following components in parts by weight: 100 parts of a first thermoplastic polymer, 0.3-1.2 parts of a first antioxidant, 0.5-3 part of a first cross-linking agent and 1-20 parts of a first additive; and the material B comprises the following components in parts by weight: 100 parts of a second thermoplastic polymer, 0.3-1.2 parts of a second antioxidant, 0.3-2 part of a second cross-linking agent, 2-5 parts of a foaming agent, 60-100 parts of an anti-radiation agent 1-20 parts of a second additive. The material A and the material B in the radiation-proof high-integrity container have good compatibility; and the anti-radiation agent is selected from two or more of tungsten, lead, bismuth, heavy metal salt, heavy metal oxide, rare earth oxide, a compound containing a lithium element and a compound containing a boron element.

The invention relates to a novel preparation method of heat-resisting crosslinking anionic starch adhesive. Under the alkaline condition, starch and parachlorine sulfonyl benzoyl chloride take reaction and then take reaction with chloroacetic acid to obtain the high-temperature-resisting crosslinking anionic starch adhesive, the synthesis process is simple, the pollution is avoided, and the cost is low. Simultaneously, through changing the dosage of the parachlorine sulfonyl benzoyl chloride and anionic etherification agents, the adhesives with different heat resistance performances and different viscosities can be obtained, the development of the starch adhesive in China is promoted, the anionic starch adhesives with different heat resistance performances and different viscosities are produced, the repeated utilization of renewable resources is realized, the product is safe and reliable and can be widely applied to the fields of living, metallurgy and the like, and good economic, environmental-friendly and social benefits are realized.

Liquids for the pre-treatment of liquid absorbing substrates, in particular textiles or garments, in printing processes are disclosed, said liquids being based on water and / or a low molecular alcohol and including small amounts of an organic acid and / or other reagents to increase dye fixation as well as at least one corrosion inhibiting agent selected from a group containing quaternary ammonium salts, derivates thereof and their corresponding organically substituted amines, hydroxy substituted acetylenic components and derivates thereof, carboxylic, dicarboxylic and polycarboxylic acids, long-chain carboxylic, dicarboxylic and polycarboxylic acids and separated fractions and derivates thereof, sulfur containing heterocyclic compounds and derivates thereof, nitrogen containing heterocyclic compounds and derivates thereof, nitrite and nitrate salts of metal ions, organic nitrites and nitrates, organic nitrogen compounds and reductive nitrogen containing compounds. Preferably the concentration of the corrosion inhibiting agent is between 0.01 wt. % and 10 wt. % and the surface tension of the liquid between 15 mN / m and 70 mN / m.

A superabsorbent polymer composite including superabsorbent polymers and cellulosic nanofibrils having a diameter equal to or less than 100 nm. The composite may be in the form of particles or a foam. Methods for producing the composite and absorbent articles including the superabsorbent polymer composite are also provided.