425results about How to "Gentle process" patented technology

The invention discloses a polydopamine-based biofunction modification method. The method comprises the following steps of: soaking clean inorganic/metal materials in dopamine alkaline aqueous solution with a pH value of 7.2 to 10, introducing oxygen to fully oxidize the clean inorganic/metal materials to obtain a monolayer polydopamine modification layer, drying, placing the material in the air atmosphere at 50 to 200 DEG C, performing thermal oxidation to obtain a multi-layer firmly-combined high-reactivity polydopamine layer, and soaking the treated material into the amino-containing and sulfydryl-containing biofunctional molecular solution to obtain a firmly combined biofunction simulate modification layer on the surface of the materials. The polydopamine modification layer obtained bythe method has excellent anti-deformation performance, stability and reactivity, can directly react with amino or the sulfydryl in the biomolecule to immobilize the bioactive molecule on the surface by covalent bonds; moreover, the process is simple, the condition is mild, and the method is easy to implement.

The invention relates to a process for indirectly producing alcohol with synthetic gas. The process comprises the steps that the synthetic gas formed by mixing industrial carbon monoxide with hydrogen is taken as a raw material to synthesize methanol; methanol is dehydrated to prepare dimethyl ether; dimethyl ether, carbon monoxide and hydrogen are mixed for carbonylation reaction to prepare methyl acetate; methyl acetate is purified and hydrogenated; a hydrogenated product is purified; and an alcohol product is obtained. An adopted catalyst, the process and a device have the characteristics of high conversion per pass and high effective utilization rate of reaction heat; the load of separating a crude product is reduced greatly; the production flow is shortened; and the production energy consumption is reduced greatly.

The invention discloses a method for preparing an organic substance, in particular to a method for preparing methyl phenyl cyclosiloxane for LED packaging. The method takes methyl phenyl cyclic siloxane (Dn<Me, Ph>, n is equal to 3 and 4) and tetramethyl tetrahydric cyclotetrasiloxane (D4<H>) as monomers; under the protection of N2, an end-capping agent is added into the cyclosiloxane monomer which is subjected to pressure reduction and water removal to copolymerize under the action of a catalyst, then the filtration is performed to recover the catalyst, and the a low molecular compound in clear solution is removed under the condition of pressure reduction and high temperature and then is cooled to room temperature to produce a target product. The method has the advantages of easily-obtained raw materials, low cost, mild conditions, simple process, simple and convenient operation, no pollution, and easiness for industrialization. A product prepared by the method has good effect in the packaging process of LEDs.

The invention discloses a preparation method of two-dimension nitrogen- and phosphorus-doped graphene. The preparation method particularly includes following steps: adding hydrotalcite to a proper amount of a sodium butyrate solution, stirring the mixture, aging the mixture, adding 4-dimethyl aminopyridine and n-butyl phosphate, stirring the mixture in a constant-temperature water bath at 60-70 DEG C for 6-8 h, separating a precipitation from liquid, washing the precipitation with deionized water for 2-3 times, drying and grinding the precipitation, sieving the precipitation through a sieve being 20-40 in meshes to obtain modified hydrotalcite powder, heating the modified hydrotalcite powder in a vacuum tubular furnace to 400-600 DEG C under a vacuum condition for calcining the powder for 2-4 h, adding the calcined powder to a hydrochloric acid solution, separating the precipitation and finally heating the precipitation to 2000-2500 DEG C under the vacuum condition to perform heat treatment for 3-6 h, and cooling a product to obtain the two-dimension nitrogen- and phosphorus-doped graphene. The preparation method is simple in raw materials and is mild in conditions.

A straddle carrier having an electric drive system, consisting of a lower and an upper frame, which are connected with one another by means of supports. A lifting mechanism with hoists is disposed on the upper frame, and the lower frame consists of chassis carriers having electrically driven wheels, and a power generation unit that feeds its generated electric power into a direct voltage intermediate circuit, to which current inverters for supplying the travel, lifting, and auxiliary motors are connected. The power generation unit represents a micro gas turbine having an attached power generator, the power of which is passed to the travel, lifting, and auxiliary motors. The straddle carrier can be produced at low weight and maintained under advantageous conditions. Furthermore, the straddle carrier can be operated under environmentally friendly conditions.

The invention discloses a method for preparing probiotics microcapsule and its application, which belongs to the biological technical field of foodstuffs. According to the invention, the method comprises the following steps: isometrically mixing a sodium alginate solution and a modified starch solution, then mixing with probiotics, spraying into a CaCl2 solution through a nozzle of a sprayer, standing and solidifying, washing by normal saline, filtering, and drying to obtain the microcapsule. The invention has the advantage of substantially raising capability of the probiotics for opposing extremity environment of the human body, and plays health care effect finally, thereby the method provided in the invention provides novel technical ideas for probiotics micro encapsulation.

The invention provides a physiological lubricant for helping a parturient to safely give birth and a preparation method thereof, relating to the field of medical technologies. The method comprises the following steps: placing purified water in a container; adding sodium chloride, propanediol, glycerin, HEC (hydroxyethyl cellulose) and xanthan gum to the purified water; evenly stirring under the temperature of 60+/-2 DEG C; and cooling to normal temperature and then sealing and packaging. The preparation method is simple and reasonable, wild in process, convenient to operate and good in finished product stability. The physiological lubricant is a safe obstetrical agent for helping normal childbirth and reducing pains in the childbirth process of the parturient.

The invention discloses a method for feeding lepidopteron. In the feeding process, a tray type net cage is used as a main feeding tool. The method comprises steps of collecting eggs, sterilizing, hatching larvae from the eggs, feeding the larvae, feeding pupas, feeding imagoes and the like, wherein gauze or plastic ropes are used as an oviposition substrate for collecting the eggs; the eggs are sterilized by using a formaldehyde solution with the volume concentration of 3-4%; the eggs are hatched and fed in an illumination incubator; the larvae are sterilized by using a sodium hypochlorite solution with the volume concentration of 8-12%; pupas feather in the tray type net cage; the feathering imagoes are continuously fed in the net cage and the eggs are collected and sterilized. The tray type net cage is simple and convenient to operate, the insects are effectively prevented from escaping and the cleaning can be carried out at any time; in the feeding process, eggs and larvae are disinfected by using different disinfectants, the disinfection effect is thorough and gentle, the bacteria are effectively prevented from mass propagation, and the hatchability of the eggs, the feathering rate of pupa are also improved, the hatchability of the eggs can be 95-96%, and the feathering rate of pupa can be 98%.

The invention discloses a composite membrane reinforced by an inclusion complex of ring molecules and a polymer. The composite membrane is mainly formed by a polymer layer consisting of a linear polymer or a branch polymer and an inclusion complex layer formed by serially sleeving the ring molecules on partial chain links of the polymer which are compounded and accumulated layer by layer. The preparation of the composite membrane mainly comprises the following steps: a polymer component and a ring molecule component are dissolved into a solvent respectively to be prepared into a solution; and a substrate material is alternately immersed into the solution prepared by the polymer component and the ring molecule component, is kept stand for a period of time, and is taken out to remove excessive adhesive substances, and a multi-layer membrane system can be obtained by circulating the process. Compared with the prior art, a supermolecular multi-layer membrane greatly strengthens the mechanical property and the friction-resistant performance of the multi-layer membrane by introducing a self-assembling inclusion component of the polymer and the ring molecules, and has broad varieties of selectable polymers and broad application prospect.

The invention discloses a hydrophobic ultraviolet radiation aging-resistant wood-based composite material and a preparation method thereof. The surface layer of the composite material is of a titanium dioxide layer with a micro-nano secondary structure and the crystal structure of the composite material is of a rutile type. The preparation method comprises the processes of precursor solution preparation, multistage dipping and drying: firstly dispersing a water-soluble titanium source in a 5-7mol/L sodium chloride aqueous solution to obtain a solution a, wherein the concentration of the water-soluble titanium source is guaranteed to be 0.001-0.500 mol/L; uniformly adding an alkaline matter into the solution a to obtain a precursor solution, wherein the concentration of the alkaline matter is guaranteed to be 0.001-0.500 mol/L; dipping a wooden base material into the precursor solution, reacting at a room temperature for 1-10 days, cleaning and drying for 1-2 days to obtain a wood-based composite material; dipping the wood-based composite material in 0.8-1.2% of a low-surface energy matter solution, reacting at a room temperature for 0.2-1 day and drying for 1-2 days to obtain the hydrophobic ultraviolet radiation aging-resistant wood-based composite material. According to the preparation method, a titanium dioxide surface layer with a rutile type micro-nano secondary structure can be constructed on the surface of the wooden base material so that the wood-based composite material is excellent in hydrophobicity and ultraviolet radiation aging resistance.

In a continuous two-stage process for preparing solvent-free polyacrylate hotmelt pressure sensitive adhesives which is gentle on the polymer and redeploys the solvent used in the process the following steps are carried out:

• • polymerizing a self-adhesive pressure sensitive adhesive in solution, the solvent having a low vapor pressure;
  • continuously mixing the polymer solution with antioxidants and preheating the mixture under superatmospheric pressure without boiling it;
  • concentrating the polymer solution to a residual solvent content of less than 0.1% by weight in a concentrating extruder under the effect of reduced pressure and elevated temperatures;
  • condensing, collecting, and re-using the solvent stripped off in the extruder;
  • compounding the abovementioned solvent-freed hotmelt pressure sensitive adhesive with tackifying resins, fillers, stabilizers, crosslinkers or other additives in a second extruder at a moderate melt temperature;
  • transferring the blended solvent-free self-adhesive pressure sensitive adhesive to a downstream coating unit.

The invention relates to a mild technique of coal complete group separation, which belongs to the separating technique of coals. And the method comprises the following steps: mixing and extracting raw coal with the mixed dissolvent of dissolvent A and dissolvent B, separating out solid-phase component, getting coal residue after drying, adding dissolvent in the liquid phase which is separated out to reversely extract, precipitating solid body, obtaining superpurity coal I after washing solid-phase component which is separated from solid and liquid, stewing the liquid matter which is separated out, and layering, separating liquid in one of the stratification, recycling use, reversely extracting residual liquid to get solid-state matter, and getting binding component after drying, liquid of another layering liquid gets into a crude membrane separator, obtaining super-purity coal II after drying solid matter which is separated out, getting ultra-micro mineral after drying the solid matter which passes through a fine membrane separator and being separated through membrane, liquid of fine membrane separator normally presses a rectifying tower, separating out dissolvent C, dissolvent B and dissolvent A to repeatedly use, and residues are lightweight component. The technique has simple technique equipment, mild process, simple control and low production cost, and dissolvent can be recycled to use. The mild technique separates coals into six matters, which opens up different processing and conversion to each group of coal, and improves the value, value in use and environmental benefit of coal.

The invention discloses a cold pad-batch dyeing process for pure cotton fabric. The process flow comprises the steps of: padding and rolling a mixed liquor of a dye and an alkaline agent, coiling and plastic film coating, rotating stacking, primary water washing, soaping, secondary water washing and drying. In the padding and rolling process, an active dye at a concentration of 10g/l is adopted, 10-15 g/l of water glass is adopted as the alkaline agent, a concentration of urea is 3 to 5g/l and a concentration of sodium sulfate is 10g/l. The rotating stacking process is performed for 16h at a room temperature of 10-15 DEG C. By the adoption of the process of the invention, energy can be saved, consumption can be reduced, the fixation ratio of the dye is increased, the grade of the product is improved, and the process cost is low. Besides, the conditions of the cold pad-batch dyeing process are moderate, the fabric is subjected to low tension and small friction, and the apparent effects and hand-feel of the fabric are improved to a great extent.

The invention relates to a method for preparing high dispersed magnesium hydroxide from agglomerated state magnesium hydroxide, and belongs to the technical field of the preparation of inorganic chemical industry materials. According to the method disclosed by the invention, the high dispersed magnesium hydroxide is prepared through the following steps: using agglomerated state magnesium hydroxide as a raw material, wherein the original average particle diameter is 0.1-3 microns, and the average agglomerated particle diameter is 5-50 microns, firstly, mixing the raw material with proper amount of inorganic solvent, and roasting the mixture for 0.5-6 hours at the temperature of 300-700 DEG C, so as to form dispersed superfine active magnesium oxide; then, adding the magnesia to an aqueous solution containing a dispersing agent and a morphological control agent, and performing hydration conversion for 0.5-6 hours at the temperature of 10-100 DEG C so as to obtain the high dispersed magnesium hydroxide of which the original average particle diameter is 0.1-3 microns, the average agglomerated particle diameter is 0.5-4.0 microns, the morphology is regular, and the particle diameters are homogeneous. The method disclosed by the invention is simple in technology, is mild in process, and is high in added value of a product. The magnesium hydroxide prepared by the method disclosed by the invention is regular in morphology and is good in dispersion, can be used as a basic inorganic chemical industry product to be used in the fields of flame resistance, foods, desulphurization, wastewater treatment and the like.

The invention provides a process for preparing squalene by taking lignocellulosic agricultural and forestry wastes as raw materials, which aims at problems in the aspect of the production of squaleneby microbial fermentation in the prior art. The process comprises the steps of pre-treatment, saccharification, yeast-like fungi fermentation and squalene extraction and the like. According to the process provided by the invention, lignocellulose biological saccharification is combined with yeast-like fungi high-density fermentation; by adopting lignocellulose biomass as raw material, on the one hand, the cost of enzyme usage and the production cost of squalene microbial fermentation in a saccharification stage are significantly reduced; on the other hand, the problem of comprehensive utilization of the agricultural and forestry wastes is solved. In addition, medium and fermentation medium in the lignocellulose saccharification stage can be recycled, water can be saved and usage of chemicals can be reduced, and has significant effect on reducing the discharge of wastewater and reducing the cost. In the process provided by the invention, the squalene yield can reach 13 g/L, accounting for 5% of the dry weight of thallus, and the purity of refined squalene is higher than 93%.

The invention relates to the field of intelligent nursing, in particular to an intelligent wheelchair vehicle with a nursing function. The intelligent wheelchair vehicle includes a movable vehicle body, a movable vehicle frame, an electric device, a traveling device, a control device, a toilet device, a power supply, an air supply device and a sun shading device. The movable vehicle body is installed on the movable vehicle frame, the movable vehicle frame is equipped with the electric device, the traveling device, the control device, the toilet device, the power supply and the air supply device, the movable vehicle frame can be transformed into sitting, lying down and turning over states, the toilet device is provided with a toilet, the toilet is connected with a cleaning device and a drying device, the air supply device separately communicates with air bags in the movable vehicle body, and the sun shading device is installed at the upper part of the movable vehicle frame. Compared with the prior art, the intelligent wheelchair vehicle with the nursing function of the invention is used as a vehicle and a bed, has the functions of transferring and turning over, and at the same time,the intelligent toilet is arranged to facilitate users to go to the toilet by themselves, the functions of cleaning, drying and odor prevention also be provided, and the work of nurses is greatly alleviated.

The invention discloses a method for extracting rice bran oil by using ionic liquid and supercritical carbon dioxide (CO2). The method comprises the following steps of: A, under a microwave heating condition, soaking rice bran in the ionic liquid BmimC1, reclaiming the BmimC1 and drying the rice bran, wherein the using amount ratio of the rice bran to the BmimC1 is 10:2-3(g/ml); and B, performing supercritical extraction, rectification and purification on the rice bran obtained in the step A by using CO2 fluid in supercritical CO2 fluid extraction and rectification integrated equipment to obtain the rice bran oil. The rice bran oil is obtained by preprocessing the rice bran by using the ionic liquid to dissolve cellulose husks of the rice bran, damage the residual cell walls of the rice bran and inhibit the biologic enzyme activity of the rice bran and performing extraction and rectification on the rice bran by using the supercritical CO2 fluid extraction and rectification integrated equipment.

A surface which carries a material which is infected with prions is cleaned with an alkaline cleaning solution to remove as much proteinaceous material as possible from the surface. The solution contains an alkaline cleaning agent which attacks prions remaining on the surface and which attacks prions removed from the surface during the cleaning step. After the cleaning step, the surface is exposed to a strong gaseous oxidant, preferably hydrogen peroxide vapor. The hydrogen peroxide or other strong oxidant attacks the prions, particularly the unclumped prion strands, deactivating the prions.