366results about How to "Easy to prepare" patented technology

The invention discloses a pH-responsive polyethylene glycol-anticarcinogen conjugate, and a synthetic method and application thereof. After anticarcinogen molecules and polyethylene glycol are covalently linked through pH-sensitive phenylimide linkage, the conjugate is formed, wherein, anticarcinogen can be doxorubicin, epirubicin, daunorubicin, demethoxydaunorubicin or hydrochlorides of the above-mentioned anticarcinogens. The phenylimide linkage is stable under the condition of a normal physiological pH value but undergoes hydrolysis under the condition of a slightly acidic pH value, e.g., a solid tumor cell external pH value and a cell endosome and lysosome pH value; that is, the phenylimide linkage is sensitive to changes of pH values in a range of 7.4 to 4.5 or to below 4.5. The polyethylene glycol-anticarcinogen conjugate has amphiphilic nature and can form nanometer-scale micelle in a saline solution through self-assembly; the micelle can be used as a drug carrier to carry hydrophobic drugs and form a nanometer micelle preparation cladded with drugs, thereby realizing synergy therapy of a plurality of drugs.

The invention discloses a methanol gasoline and a preparation method thereof, relating to the field of new energy. The methanol gasoline comprises 15-30wt% of methanol, 67-83wt% of gasoline and 2-3wt% of additive. The preparation method comprises the following steps: pouring solubilizer, energy increasing and consumption reducing agent, anti-oxidant, metal corrosion inhibitor, rubber swelling inhibitor into a reaction vessel according to a required proportion with stirring, mixing uniformly to obtain an additive; mixing the additive with methanol according to a required proportion to obtain modified methanol; and mixing the modified methanol with gasoline according to a required proportion to obtain the methanol gasoline. The methanol gasoline disclosed in the invention has the advantagesof simple preparation and good performance, can be used mixed with a national standard gasoline in any proportion with similar energy consumption with the national standard gasoline and emission indexes that conforms to requirements of environmental protection, and can be widely used for various petrol-engined motor vehicles, such as car, carriage, fork truck, power-assisted vehicle, farm vehicle, motorcycle, load wagon and forklift.

The invention discloses a processed cheese stored in the room temperature and a method for preparing the same. The processed cheese stored in the room temperature comprises the materials of, 15% to 60% of natural cheeses, 2% to 14% of fat products, 3% to 40% of other milk solids other than the natural cheeses and the fat products, 4% to 10% of starch, 3% to 7% of vegetable protein, 0.1% to 0.5% of antioxidants, 1.5% to 2.5% of emulsifying salt and 13% to 25% of water, wherein the percentages are the mass percentages that each material accounts for the total material amount; and the emulsifying salt is phosphate. According to the processed cheese stored in the room temperature and the method for preparing the same, the processed cheese can be stored in the room temperature and has at least a 4-month shelf life, and the situation that current state market cheeses can be only refrigerated is broken, so that the cheese market promotion is facilitated; the processed cheese has mild flavor and can maintain original characteristic flavors and functional characteristics of classical cheeses; the texture is hard, and the processed cheese can be packed into flexible and various snack forms.

The invention provides an antigen-specific T lymphocyte freezing medium, comprising freezing medium A and freezing medium B; the freezing medium A includes, by volume, 30-40% of plasmalyte electrolyte injection, 30-40% of glucose and sodium chloride injection, 5-15% of dextran glucose injection and 15-25% of human albumin solution; the freezing medium B includes, by volume, 20-30% of plasmalyte electrolyte injection, 20-30% of glucose and sodium chloride injection, 5-15% of dextran glucose injection, 15-25% of human albumin solution and 10-20% of dimethyl sulfoxide; the freezing medium A and the freezing medium B are stored separately; in use, the freezing medium A and the freezing medium B are mixed in a ratio of 1:(0.5-2), forming the antigen-specific T lymphocyte freezing medium. The antigen-specific T lymphocyte freezing medium is capable of enabling less crystal to form in cells, increasing cell survival rate and maintaining tumor-killing ability of cells. The invention also provides a preparation method and application of the antigen-specific T lymphocyte freezing medium and antigen-specific T lymphocyte injection.

The invention relates to a method for treating the surface of lithium metal with fluoroethylene carbonate and an application of the lithium metal in solid-state batteries, and belongs to the technicalfield of preparation of negative electrode materials for lithium batteries. The method comprises that a lithium negative electrode is immersed in fluoroethylene carbonate, and then taken out and subjected to drying treatment to volatilize a residual liquid on the surface. The method is simple and easy to operate and easy to control, has obvious effect on solving the problems of poor compatibilityof lithium metal / solid electrolyte interfaces and lithium dendrite growth in conventional solid-state batteries, and is suitable for large-scale commercialized production.

The invention provides a rubber material formulation for a high fatigue resistant rubber diaphragm of an automobile brake chamber, which is mainly prepared by natural rubber (NR), styrene butadiene rubber (SBR), polybutylene terephthalate (PBT), vulcanizing agent, zinc oxides, stearic acid, anti-aging agent, dispersant, accelerant, carbon black, aromatic oil and white carbon black. The physical mechanical properties of the rubber diaphragm of the automobile brake chamber prepared by the rubber formulation all reach the novel standard drafted by the Society of Automotive Engineering (SAE) of America; the service life of a platform of the rubber diaphragm reaches over 2 million times; the platform has the advantages of high stress at definite elongation, strength and elongation property, compression fatigue resistivity, flexural deformation resistance and attrition resistance, and maintenance of small variation of the material characteristics within the wide use temperature between 55 and 100 DEG C when the material is used; and the service life of the platform is basically the same as that of an air brake assembly, and resource conservation is greatly promoted simultaneously, thereby realizing conversion of the platform from 'a wearing part' to 'a permanent part'.

The invention discloses a composite barrier for preventing horizontal diffusion and migration of underground water layer pollutants and application thereof. The composite barrier is formed by encapsulating expansion clay by a water-soluble polymer film. During the application, the composite barrier is placed into a vertical open groove with a watertight layer arranged at the groove bottom, the filling height of the composite barrier in the vertical open groove is not lower than the upper plane of the underground water layer, wall protecting slurry is removed, and then, soil is filled back into the vertical groove until the vertical groove is flatly filled. The composite barrier has the advantages that the construction is simple, the engineering manufacturing cost is low, the anti-seeping effect is good, and the like. The horizontal migration of pollutants in the underground water layer can be better prevented.

The invention discloses a preparation method of an amphoteric polyether sulphone separation membrane. The preparation method specifically comprises the following steps of: 1, taking a polyether sulphone flat ultrafiltration membrane, and removing an additive contained in the polyether sulphone flat ultrafiltration membrane to obtain a clean polyether sulphone flat ultrafiltration membrane; 2, performing plasma modification on the polyether sulphone ultrafiltration membrane obtained in the step 1 by using a controllable low-temperature plasma discharge device to obtain a modified polyether sulphone ultrafiltration membrane; and 3, taking an acrylic monomer, and grafting the modified polyether sulphone ultrafiltration membrane with the acrylic monomer to obtain the amphoteric polyether sulphone separation membrane. The polyether sulphone separation membrane prepared by the preparation method is an amphoteric membrane of which the surface contains amine groups and carboxyl, and the surface hydrophilicity is enhanced, so that the pollution resistance of the membrane is improved; and while the retention rate is increased, the pure water flux is greatly improved, so that the filtration efficiency is improved.

The invention belongs to the technical field of chemical products of beauty and skincare cosmetics, and particularly relates to a preparation method for an organic-inorganic hybrid skin-friendly efficient sunscreen product. The method comprises the following steps of: performing macromolecular self-assembly on a synthesized amphiphilic triblock polymer PEO-b-PDMA-b-PS to obtain polymer nanoparticles with uniform particle size distribution; and performing in-situ reaction on a deposited titanium precursor on the nanoparticles, drying in-situ reaction products to obtain organic-inorganic hybridtitanium dioxide nanoparticles, and further calcining the organic-inorganic hybrid titanium dioxide nanoparticles to obtain titanium dioxide nanoparticles. The method is characterized in that the skin-friendly titanium dioxide nanoparticles with high sunscreen performance can be prepared, are harmless to skin, have good ultraviolet resistant effects, and have high dispersion performance in water;the particle sizes of the ultraviolet resistant nanoparticles can be randomly controlled; and the preparation method is simple and wider in application range.

The invention discloses an antistatic and flame-resistant PC / ABS composite material and a preparation method thereof. The composite material comprises 60-80 parts of PC resin; 8-15 parts of ABS resin; 8-12 parts of flame retardant; toughening agent 1-5 parts; antistatic agent 8-25 parts; antioxidant 0.01-2 parts; other additives 0.4-0.8 parts. The present invention selects the preferred antistatic agent, which minimizes the impact on PC performance, and the use of the antistatic agent in conjunction with the emulsion method ABS is beneficial to the antistatic effect of the antistatic agent and can last.

The invention provides a preparation method for a pitaya peel-based edible packaging film. The preparation method is characterized by comprising the following steps: (1) washing and stripping and slicing pitaya peels; (2) performing blanching treatment; (3) adding water and pulping to obtain pitaya peel pulp, wherein the mass ratio of matter obtained in the step (2) to the water is (15 to 45):100; (4) adding a thickening agent and a plasticizer into the pitaya peel pulp, wherein the mass ratio of the thickening agent to the pitaya peel pulp is (0 to 0.4):100, and the mass ratio of the plasticizer to the pitaya peel pulp is (0 to 0.3):100; the thickening agent is sodium alginate or sodium carboxymethylcellulose, and the plasticizer is glycerinum or sorbitol; (5) performing homogenization treatment at a treatment rate of 15000 to 20000 r / min for 5 to 8min; then, performing degassing treatment and standing to obtain shaped pulp; (6) casting and drying, and then performing film uncovering to obtain the pitaya peel-based edible packaging film. The invention also provides the packaging film prepared by the preparation method.

The invention discloses ferroferric oxide magnetic nanometer particles decorated with tetraazacalix [2] arene [2] triazine. A preparation method of the ferroferric oxide magnetic nanometer particles comprises the following steps of: firstly, covering a silicon shell by using the ferroferric oxide magnetic nanometer particles; decorating with amino to obtain amino-modified ferroferric oxide magnetic nanometer particles; and reacting the ferroferric oxide magnetic nanometer particles with the tetraazacalix [2] arene [2] triazine at 110 DEG C under a nitrogen condition to prepare the ferroferric oxide magnetic nanometer particles decorated with tetraazacalix [2] arene [2] triazine. The ferroferric oxide magnetic nanometer particles integrate the advantages of large superficial area of the original and easiness of separation of the original ferroferric oxide magnetic nanometer particles, and also have a new function characteristic, so that the extraction selectivity of a characteristic target is enhanced; and the ferroferric oxide magnetic nanometer particles are used for extracting and separating, and have the advantages of easiness and convenience in operation, and capability of extracting, enriching and separating organic matters and inorganic cations. And moreover, the ferroferric oxide magnetic nanometer particles can be totally separated from a base solution under an external magnetic field function, so that the ferroferric oxide magnetic nanometer particles are economic, environment-friendly and high in recovery rate and have a good popularization and application prospect.

The invention discloses a hydrogenated styrene-conjugated diene copolymer as well as a preparation method and application thereof in self-adhesive films. The hydrogenated styrene-conjugated diene copolymer has the following expression: S1-EB1-S2-EB2, wherein S1 and S2 are styrene blocks; EB1 is a hydrogenated butadiene block; and EB2 is a hydrogenated conjugated diene block. The hydrogenated styrene-conjugated diene copolymer has good processing properties and can be used for preparing the self-adhesive films together with other poly stylene polymers; and the prepared self-adhesive films are less affected by temperature, humidity and other external conditions, have good stability, have adhesive strength capable of being controlled within a wide range, and are suitable for application requirements of various materials.