39results about How to "Increase the dissolved concentration" patented technology

The invention discloses a silk fibroin membrane and a preparation method of the silk fibroin membrane. The preparation method comprises the following specific steps of: dissolving natural silk taken as a main raw material in an acid inorganic salt solution, forming a membrane, desalting, and carrying out vacuum drying to prepare the silk fibroin membrane which is insoluble in water and has high mechanical property. The silk fibroin membrane has the breaking strength of greater than 50Mpa at dry state, the breaking elongation of greater than 5% at dry state, the breaking strength of greater than 10Mpa at wet state and the breaking elongation of greater than 150% at wet state. In addition, the silk fibroin membrane prepared by the method is stable and controllable in structure, has good biocompatibility and can serve as a medicinal biological material. The preparation method disclosed by the invention is simple and short in flow path, has high film formation efficiency and is suitable for industrialization large-scale production.

The invention discloses a process method for performing advanced treatment on petrochemical wastewater through catalytic ozonation. The method is characterized by comprising the following steps of: allowing petrochemical wastewater to sequentially flow through a pre-oxidation tower, a catalytic oxidation tower I and a catalytic oxidation tower II, and respectively filling high-porosity inert filler, activated aluminum oxide-based catalyst and granular active carbon in three towers, wherein the pre-oxidation tower operates under pressure. The ozone is prepared by an oxygen-enriched source or oxygen source ozone generator, and tail gas in the tower is collected and treated in a unified mode.

The invention discloses a regenerated silk fibroin gel mask and a preparation method thereof. The specific preparation method comprises the following steps: (1) directly dissolving degummed silk into a formic acid solution containing salt, and drying to obtain a silk fibroin mask containing salt; and (2) directly soaking the dried mask into an alcoholic solution or water, so as to prepare the regenerated silk fibroin gel mask. Compared with the prior art, the gel mask has the advantages of traditional silk fibroin mask and hydrogel, is transparent, excellent in mechanical property and high in moisture content, and simultaneously has a biomimetic nanometer fiber structure, good degradability and good biocompatibility; and in addition, the gel mask is simple in preparation method, short in flow and easy to achieve mass production. The gel mask has excellent physical and chemical properties and biological characteristics, so that the regenerated silk fibroin gel mask has a wide application prospect in the fields of cosmetics and regenerative medicines, such as masks, skin dressing, dura mater cerebralis, corneas, anti-adhesive films, nerve sheath pipes and the like.

The present invention discloses an active collagen lyophilized powder and a preparation method thereof. A rat tail collagen, polyols, mycose and citric acid are compounded, so that the stability of the rat tail collagen in a freeze-drying process may be jointly improved, a prepared lyophilized product may be stored without a preservative for a long time and is good in redissolution property, capable of keeping the natural bioactivity of collagen and remarkable in capability of promoting the synthesis of collagen in the skin.

The invention relates to a flexible rare-earth transparent light-emitting film and a preparation method thereof. The film is composed of a rare-earth light-emitting material and polyvinyl alcohol (PVA) in a mass ratio of 1:(1-4). The rare-earth light-emitting material comprises LAPONITE RD nano clay containing light-emitting rare-earth organic complex, an oxygen-containing ionic liquid and water, wherein the mass ratio of the LAPONITE RD nano clay containing light-emitting rare-earth organic complex to the oxygen-containing ionic liquid is 1:(1-3); the water accounts for 80-85 wt% of the rare-earth light-emitting material; the average particle size of the nano clay is 30nm; and the mass percent of the rare earth ions in the nano clay is 6-7.5%. The novel high-efficiency flexible rare-earth transparent light-emitting film is peelable and thin, and has the advantages of large area, excellent flexibility, excellent heat stability, excellent photostability and high mechanical strength.

The invention discloses a polyvinylidene fluoride modified polyvinyl chloride coating. The polyvinylidene fluoride modified polyvinyl chloride coating comprises a component A and a component B, wherein the component A is mainly formed by a polyvinyl chloride resin, dicapryl phthalate, a polyvinylidene fluoride resin, dimethyl formamide, a modified high chlorinated polyethylene resin, a xylene formaldehyde resin and fluorocarbon modified polysiloxane; and the component B is an isocyanate adduct. The polyvinylidene fluoride modified polyvinyl chloride coating is prepared according to a weight ratio of the component A to the component B of 100.0:9.0-12.0 before use, and is called an FVC anticorrosive coating for short. The coating has the advantages of good matrix combination force, ultrahigh weatherability, excellent chemical medium resistance, high temperature tolerance and the like, can be used at 120-150DEG C for a long term, and can be widely used in engineering buildings, equipment members and production devices of the chemical engineering industry, the petroleum industry, the pharmacy industry, the food industry and the like, the service life of the coating can reach above 10 years, and the coating is deeply popular with users, and has high economic and social benefits.

The invention provides a chemical mechanism control type high concentration ozone / reaction liquid producing system and method by charging right amount of chemical radical scavenger into ozone / reacting liquid hybrid system, thus generating a selectivity controlled free radical reaction mechanism so as to make the dissolving capacity of ozone in the reacting liquid break the limitation of the system physical conditions to approach system thermodynamic saturation concentration, thus increasing the dissolving concentration and stability of ozone in the reacting liquid.

The invention discloses a low-temperature dissolving method by adopting a cellulose combined raw material and application thereof. The preparation method comprises the following specific steps: 1) mixing at least two cellulose raw materials with different polymerization degrees to obtain a cellulose mixture; 2) putting the cellulose mixture into alkali liquor subjected to cooling treatment, and performing uniform stirring to obtain uniform cellulose pulp porridge; and 3) deeply freezing the cellulose pulp porridge, and then heating and unfreezing to obtain stable cellulose dissolved colloid. According to the invention, the synergistic effect of cellulose with different polymerization degrees is utilized; cellulose with higher polymerization degree is used as a skeleton, and cellulose withlower polymerization degree is used for gap filling, so that the strength of a cellulose regenerated product is improved, the application range of cellulose is expanded, the cost is remarkably reduced, and the cellulose regenerated product can be widely applied to the fields of regenerated cellulose fibers, films, microspheres or hydrogel and the like while high dissolution concentration of cellulose is ensured.

The invention relates to a low-temperature dyeing method for high-performance fabric, and belongs to the technical field of textile printing and dyeing. According to the method, silicic acid gel generated by hydrolyzing sodium silicate is adopted in the dyeing process of the high-performance fabric. N,N-dimethylacetamide is enriched in the silicic acid gel which is adsorbed on the fiber surface ofthe fabric. At 50-70 DEG C, N,N-dimethylacetamide opens part of hydrogen bonds between macromolecules on the surface of the high-performance fiber, and surface roughness and porosity of the fiber areincreased; then under the action of sodium hydroxide, the silicic acid gel adsorbed on the surface of the high-performance fabric is dissolved, and N,N-dimethylacetamide is released. Under the condition of low temperature dyeing at 70-90 DEG C, N,N-dimethylacetamide has strong polarity, and can effectively increase dissolution concentration of dye and reduce micelle concentration. Dye molecules are easily adsorbed and dye the high-performance fabric, and dyeing efficiency of the high-performance fabric is effectively improved. Besides, better dyeing effect can be achieved with the method at relatively low dyeing temperature, and thus, production cost and energy consumption are reduced.

The invention relates to collagen peptide powder and a preparation method thereof, belongs to the technical field of health-care foods, and particularly relates to collagen peptide powder and the preparation method thereof. The collagen powder collagen powder is prepared from the main raw materials of collagen, lactoferrin, bone glue, polyvinylpyrrolidone, oat glue, proanthocyanidins, Chinese wolfberry fruits and algin. The collagen peptide powder is simple in technology, low in cost, short in making time, and high in efficiency. The collagen is good to absorb, the activity of collagen in skin is improved, and the collagen peptide powder can nourish skin and delay aging.

The invention discloses a combined treatment system for cultivation sewage and a method thereof. The combined treatment system comprises an animal house, a pretreatment unit, a solid-liquid separation unit, a solid treatment unit and a liquid treatment unit and is characterized in that the animal house is connected with the pretreatment unit through a pipeline, the pretreatment unit is connected with the solid-liquid separation unit, and the solid-liquid separation unit is respectively connected with the solid treatment unit and the liquid treatment unit. The combined treatment system can guarantee continuous and stable work; as equipment of the combined treatment system has reasonable structural design, the equipment self has very strong self-cleaning capability in work, a blocking phenomenon is avoided, ordinary maintenance load is very small, and the combined treatment system is suitable for pretreating cultivation sewage; water-tolerant plants with developed root systems are planted on an aerobic constructed wetland, the developed root systems of the plants can extend into wetland substrates to form a system having good water permeability with the substrates, proceeding of a nitration effect in the substrates is promoted, and nitrous oxide generated by the nitration effect is small.

The invention relates to the field of food packaging, in particular to a preparation method and product of a chitosan antibacterial film. The preparation method of the chitosan antibacterial film, provided by the invention, comprises the following steps: dipping the chitosan with tartaric acid and then washing with absolute ethyl alcohol; mixing the tartaric acid with 1-ethyl-3methyl imidazole acetate series and adding the washed chitosan; then adding chitinase and cooling the temperature until coating liquid is obtained; performing strickling on the obtained coating liquid and putting into asolvent for carrying out phase transfer to obtain a film and drying to obtain the chitosan antibacterial film. The obtained chitosan antibacterial film disclosed by the invention has good antibacterial effects and high film strength.

The invention relates to a water purifying and drinking machine with a hydrogen production function. The water purifying and drinking machine comprises a filter element assembly communicated with external tap water and used for filtering, a drinking water storage tank communicated with the filter element assembly and a hydrogen production assembly. A hydrogen outlet of the hydrogen production assembly is sequentially communicated with a hydrogen dissolving device used for scattering hydrogen molecules into micro-nano hydrogen bubbles and dissolving the micro-nano hydrogen bubbles in water, a first self-priming pump used for increasing the pressure to improve the hydrogen solubility, a fifth water inlet electromagnetic valve and an aeration head used for assisting the first self-priming pump to form bubble hydrogen-rich water; according to the invention, hydrogen is produced by electrolyzing filtered pure water, micro-nano bubble physical hydrogen dissolving is achieved through the hydrogen dissolving device, the solubility of hydrogen is improved, the storage time of hydrogen is prolonged, the dissolution concentration of hydrogen is further improved through pressurization of the first self-priming pump, and meanwhile, the first self-priming pump is matched with the aeration head to form nanoscale bubble hydrogen-rich water; the taste of the hydrogen-rich water is improved while the concentration of the hydrogen-rich water is improved; moreover, the water purifying and drinking machine is diversified in function form, the multi-level requirements of the user are met, and the user experience is improved.

The invention relates to a panax notoginseng saponins sustained-release gel and a preparation method thereof and relates to the field of medicine health care. The panax notoginseng saponins sustained-release gel comprises, by weight ratio, 56-74% of carboxymehyl chitosan, 7.4-16.6% of polyvinylpyrrolidone, 0.07-0.11% of panax notoginseng saponins and 18.4-27.7% of coss-linking agent. The medicine release rate of panax notoginseng saponins is effectively controlled, the panax notoginseng saponins utilization rate is improved, metabolism dynamics properties of the medicine in the human body are improved, too high medicine concentration in blood is avoided, and a stable plasma concentration is provided, so as to achieve the objectives of prolonging action time of the medicine in the human body and reducing dosing times; toxic and side effects of the medicine can further be reduced, and patients' compliance is improved.

The invention relates to high-concentration lead artificial seawater which consists of artificial seawater and lead salt, wherein Pb<2+> has the concentration of 7.19-9.06mmol / L. According to the high-concentration lead artificial seawater, the artificial seawater mixing serves as the basis, HCO<3->, CO3<2-> and other faintly acid negative ions are artificially removed, and the Pb<2+> is prevented from conducting a double hydrolysis reaction with the seawater; and moreover, the dissolving concentration of Pb<2+> in the artificial seawater environment is improved. According to the method, the dissolving concentration of Pb<2+> in the artificial seawater environment is greatly improved, and the high-concentration lead artificial seawater can be widely applied to the research of marine biophysiology, toxicology and the like and has a good application prospect.

The invention relates to a transformation method for sludge in-situ reduction of a sewage treatment plant, which comprises the following steps: after sludge in a sludge primary concentration tank is treated by a sludge primary weak magnetic ozone reduction tank, one part of the sludge enters an anoxic tank as return sludge, and the other part of the sludge enters a sludge secondary strong magnetic centrifugal wall-breaking conditioning tank as residual sludge for treatment; the sludge secondary strong magnetic centrifugal wall-breaking conditioning tank adopts a strong magnetic field and an industrial centrifugal wall-breaking technology to reinforce sludge dewatering, sludge cakes are transported out after the wall-broken excess sludge is dewatered, and dewatering liquid flows back to an anoxic tank. Compared with the prior art, the method provided by the invention can achieve the effects of short time, high efficiency, reduction and energy saving, has no secondary pollution problem caused by drug addition, realizes sterilization and disinfection in the whole process through ozone circulation, and provides powerful technical support for in-situ reduction of sludge in a municipal sewage treatment plant.

The invention discloses a gas-liquid reaction method for entering a reaction preparation state in advance. A gas-phase feeding branch is partial gas-phase feed and main process gas-phase feed; the liquid-phase feed and the partial gas-phase feed are premixed through four steps before entering a reactor to obtain a premixed material; the lower part of the reactor is provided with a main process gas-phase feed port and a premixed material feed port, and the reactor above the premixed material feed port is a reaction main control unit; the premixed material enters the reactor through the premixedmaterial feeding port, the main process gas-phase feed enters the reactor through the main process gas-phase feeding port, and the premixed material and the main process gas-phase feeding port upwards enter the reaction main control unit to react. The invention further provides a gas-liquid reaction device. According to the gas-liquid reaction method and device, the premixed material can enter the reaction preparation state in advance before entering the reactor, and the conversion rate and selectivity can be improved to be close to the reaction equilibrium conversion rate and selectivity.

The invention discloses a preparation method of epoxy phenyl silicone rubber. The method includes the steps that (1) chlorobenzene and phenyl silicone rubber are added into a reaction kettle, and stirring is conducted until the phenyl silicone rubber is completely dissolved; and (2) meta-chloroperoxybenzoic acid is added for reaction, and then precipitation, washing and drying are carried out, wherein the mole ratio of the double-bond content in the meta-chloroperoxybenzoic acid to the double-bond content in the phenyl silicone rubber is 1 to (1.1-1.5). The phenyl silicone rubber with the vinyl content being 5-40% can be efficiently and successfully epoxidized, and the epoxidation conversion rate can reach 90% or above. Compared with existing phenyl silicone rubber epoxidation modificationprocesses, the reaction time is successfully shortened by 25%, the dissolution concentration of the phenyl silicone rubber is successfully increased, and efficiency is greatly improved. More importantly, using of a trichloromethane dissolvent which is highly toxic and can corrode metal containers is omitted, and possibility is provided for industrialization of phenyl silicone rubber epoxidation.The reaction process is mild, and less side reaction occurs.

The invention relates to the field of photoreaction, in particular to a method for synthesizing vitamin D3 in a segmented and fixed spectrum band mode. Through segmented illumination, 7-dehydrocholesterol is converted into pre-vitamin D3, and then the pre-vitamin D3 is directly converted into vitamin D3, so that the generation of trans-vitamin D3 is reduced. Meanwhile, an ultraviolet lamp of the photoreactor is fixed at a certain wavelength, and the condition of photoreaction is controlled, so that the conversion rate of converting the 7-dehydrocholesterol into the previtamin D3 is increased to 98 percent, and the generation of impurities such as tachysterol and leucterol is reduced. The method mainly comprises the steps of dissolution, illumination and distillation, the synthesis steps ofVD3 are easier to operate, the quality is easier to control, and industrial production is easier.

The invention discloses aloe arborescens-chitosan-graphene oxide gel freeze-dried powder for burns. The aloe arborescens-chitosan-graphene oxide gel freeze-dried powder is prepared from the followingraw materials: chitosan modified graphene oxide, sodium hyaluronate, an aloe arborescens extract, allantoin, lecithin, recombinant human epidermal growth factors and the like. The chitosan and the graphene oxide are used as raw materials to prepare chitosan modified graphene oxide, when used for preparing the aloe arborescens-chitosan-graphene oxide composite gel material, the chitosan modified graphene oxide expands in water to absorb water and can effectively adsorb various active substances in the aloe arborescens extract, for example, the chitosan can adsorb hydrophilic active substances of mucopolysaccharides in the aloe arborescens extract, and the graphene oxide can adsorb flavonoid compounds containing benzene rings in aloes arborescens through pi-pi accumulation and has a good adsorption effect on various trace elements in the aloe arborescens.

The invention discloses a collagen peptide wound dressing and a preparation method thereof. The collagen peptide wound dressing is prepared from the following raw materials in percentage by weight: 25-35% of collagen, 10-15% of lactoferrin, 8-12% of bone glue, 8-14% of polyvinylpyrrolidone, 8-12% of oat glue, 5-8% of anthocyanin, 3-5% of lycium chinensis, 3-5% of pseudo-ginseng, 4-6% of cirsium japonicum, 2-4% of honey, 1-2% of vitamins, and 3-5% of corn starch. The collagen peptide wound dressing is mainly prepared from the collagen and the lactoferrin, and is simple in process and low in preparation cost; the polyvinylpyrrolidone, the pseudo-ginseng and the circium japonicum can achieve the effects of detoxifying, stopping bleeding, improving the dissolution concentration, preventing peritoneal adhesion, promoting blood sedimentation and the like; the multiple vitamins are added to ensure nutrition and absorption; and a small amount of honey is added, so that the preservative has good corrosion resistance and can be used for preventing bacterial infection.

The invention discloses a system and a method for treating acidic tail gas and producing ammonium salt. The system and the method solves the problems that effective treatment means for tail gas containing hydrogen chloride, chlorine and sulfur dioxide and other harmful gas is lack in the prior art, and at the same time the tail gas cannot be changed from waste into valuables according to the present method. The system and the method can substantially improve acid removing efficiency without inducing system fault. When the acidic gas is treated, solid ammonium salt is also prepared in order to change waste into valuables. A structure of a piece of reactor equipment in the system is divided into three segments, including a micropore aeration section, a gas-liquid reaction section, and a counter current washing section from bottom to up in order; air passes a piece of micropore aeration equipment and enters the gas-liquid reaction section, dissolved oxygen in the liquid phase is improved, and conversion rate from sulfite to sulfate is improved; the gas-liquid reaction section is provided with a circulating water pump, and the circulating water pump improves absorption of ammonia gas when the liquid phase passes through the counter current washing section and washing for removing generated particular ammonium salt.

An electrolyzed water generation device 1 comprising a plurality of electrolysis chambers 30, 40, ... for the electrolysis of water. Each electrolysis chamber 30, 40, ... has arranged therein: a firstpower feeder 31, 41, ... and a second power feeder 32, 42, ... arranged facing each other; and a partition membrane 33, 43, ... that divides the electrolysis chamber 30, 40,... into a first polar chamber 30A, 40A on the first power feeder 31, 41 ... side and a second polar chamber 30B, 40B, ... on the second power feeder 32, 42, ... side. A solid polymer membrane is used as the partition membrane33, 43, .... At least two electrolysis chambers 30, 40 are connected by parallel water channels 51 that connect the first polar chambers 30A, 40A in parallel and by a serial water channel 55 that connects the second polar chambers 30B, 40B in series.