1084results about How to "Hydrophilic" patented technology

Ophthalmically compatible contact lenses include lens bodies configured for placement on a cornea of an animal or human eye. The lens bodies are made of a hydrophilic silicon-containing polymeric material. The lens bodies have oxygen permeabilities, water content, surface wettabilities, flexibilities, and / or designs to be worn by a lens wearer even during sleep. The present lenses can be worn on a daily basis, including overnight, or can be worn for several days, such as about thirty days, without requiring removal or cleaning.

The invention discloses a preparation method of a composite heat conduction graphene membrane and the composite heat conduction graphene film. The preparation method comprises the following steps: S1, putting crystalline flake graphite or graphite powder into a mixed solution of concentrated sulfuric acid, potassium persulfate and phosphorus pentoxide, soaking for a day and a night, then carrying out suction filtration, drying, and carrying out pre-oxidizing; S2, oxidizing pre-oxidized graphite further by adopting a Hummers method, that is, oxidizing fully in concentrated sulfuric acid and potassium permanganate, then adding deionized water for diluting, and carrying out repeated washing and suction filtration, so as to obtain an oxidized graphene aqueous solution; S3, spraying the oxidized graphene aqueous solution on a substrate by adopting a thermal spray method, and depositing, so as to obtain an oxidized graphene film; S4, reducing the oxidized graphene film, so as to obtain the graphene film; and S5, laminating the graphene film, so as to obtain the composite heat conduction graphene film. Compared with the prior art, the preparation method is simple, the cost is low, and the prepared composite heat conduction graphene film has a favorable heat conduction performance.

The invention relates to a polyvinylidene fluoride hollow fiber membrane and a preparation method thereof, belonging to the field of chemical industry. The pore size of the membrane is 0.02-0.5 micrometers, the thickness is 0.2-0.5 millimeters, and the external diameter of membrane wires is 1-2 millimeters. A membrane making liquid comprises the following components in percentage by weight: 15-30% of polyvinylidene fluoride resin, 1-10% of hydrophilic polymer, 0.5-5% of functional polymer or polymer monomer, 0.1-5% of surfactant, 0.1-15% of inorganic or organic polymer pore-forming agent, 0.1-5% of nano additive and 40-71% of solvent. The preparation method of the polyvinylidene fluoride hollow fiber membrane comprises the following step of: effectively controlling the interfacial tension between the membrane making liquid and a solidifying liquid and the double diffusion permeation speed of the solidifying agent and the solution on the interface by properly adjusting the ratio of all components and using the surface moistening and dispersing actions of the surfactant, the dispersing and thickening actions of the pore-forming agent and the hydrophilic action of the hydrophilic substance. Thus, the hydrophilic polyvinylidene fluoride hollow fiber membrane with high permeability is prepared.

The invention discloses a high oil absorbing resin, and a process for preparation comprises utilizing short-chain ester of (metyl group) acrylic acid, long-chain ester of acrylic acid and styrene monomer to be monomers, adding dispersing agent and surface active agent, and getting through suspension polymerization and random copolymerization under the condition of the existence of cross linker and initiating agent. The process for synthesizing has lithe time consumption, which can be industrialized, and high oil absorbing resin which is got has high oil absorbing efficiency, fast oil absorbing speed, and which can be recycled to be repeatedly used.

The invention discloses a method for dyeing and finishing pure-cotton high-count high-density fabric, which includes steps of singeing, cold dome, desizing and boiling-off, bleaching, mercerization, dyeing, moisture absorption and breath, no-iron sorting, tentering, pre-shrinking and packaging. The fabric dyed and finished by the present invention has advantages of high rebound, moisture absorption and breath, crease-resistance and soft feel.

The invention belongs to the medicinal preparation field, relates to a cell-penetrating peptide modified nanoparticle, and concretely relates to a nanoparticle delivery system for oral polypeptide and protein medicines, and its preparation method. The medicine delivery system is composed of the nanoparticle, cell-penetrating peptides modified on the surface of the nanoparticle, and the polypeptide protein medicines sealed by the nanoparticle, wherein the average particle size range of the medicine delivery system is 10-500nm. The cell-penetrating peptide modified nanoparticle and glucosaminoglycan having electronegative cell surfaces undergo electric property attraction and then undergo endocytosis, so the cell-penetrating peptide modified nanoparticle and the glucosaminoglycan are integrally taken into cells; and the cell-penetrating peptide modified nanoparticle has an alimentary canal mucous membrane penetrating capability after the cell-penetrating peptide modified nanoparticle is orally taken, and can deliver the polypeptide protein medicines carried by the cell-penetrating peptide modified nanoparticle to the whole body for blood circulation, so the oral biological utilization degree of the medicines are improved. The cell-penetrating peptide modified nanoparticle has the advantages of improvement of the stability of polypeptide and protein medicines in the alimentary canal, reduction of the application amount of cell-penetrating peptides, and reduction of possible toxic side effects caused by the cell-penetrating peptides.

The invention relates to aerogel and provides a preparation method of transparent silicon dioxide aerogel, which has the advantages of low cost, simple process, short production period, controllable reacting process and continuous production and adopts secondary modification process and normal-pressure drying steps. The preparation method comprises the following steps: 1) solution preparation and silicon source co-precursor hydrolysis; 2) ion exchange and silicon dioxide hydrogel preparation by using gel; and 3) aging, alcoholizing, modifying and normal-pressure drying of the silicon dioxide gel.

The invention discloses a high-strength polysaccharide aerogel microsphere, and a preparation method of the high-strength polysaccharide aerogel microsphere, which are mainly used in the field of chromatographic separation. According to the preparation method, firstly a difunctional cross-linking agent is used to modify a polysaccharide material, then the polysaccharide material is mixed with a material not modified, and the mixture is emulsified into a sphere, and activated at the later stage to achieve crosslinking in the microsphere. The modified polysaccharide chain forms a covalent cross-linking bond in an aerogel fiber bundle and between the aerogel fiber bundles, so that the mechanical strength of the aerogel microsphere is greatly improved; the polysaccharide chain not modified contains a large quantity of hydroxide radicals so as to be good for the formation of a hydrogen bond in the gelation process and play a role of skeleton supporting, then a macropore network structure formed through aerogel solidification is kept, and the shrinkage and the deformation of the microsphere are effectively avoided. The aerogel microsphere not only has an excellent property of the natural polysaccharide, but also has a remarkable advantage on the skeleton rigidity and operation flow rate, and is therefore an ideal industrial chromatographic separation filler.

The invention discloses a method for transforming fatty acid ethyl ester into glyceride, which comprises the following steps of: mixing the fatty acid ethyl ester and glycerol in a material tank; making the material pass through a glycerol separator by using a pump to separate free glycerin; then putting the material in a reactor in which immobilized lipase is filled; and making the material passthrough a packed tower to remove ethanol; making the material finally flow back to the material tank for performing 6 to 300h circular reaction; then carrying out molecular distillation on the reaction product to remove the unconverted reactant so as to obtain glyceride products. The method can improve the stability and bioavailability of the products, and has high application value for transforming functional fatty acids such as ethyl ester fish oil, algae oil, conjugated linoleic acid, arachidonic acid and the like into glyceride products.

The invention discloses a water borne epoxy resin anticorrosive paint and preparation method thereof and solves the contradiction between storage stability of water dispersion and water resistance and corrosion resistance of dispersion film in the prior art. The paint is prepared by mixing oxosilane modified water borne epoxy resin dispersion, iron oxide red, rustproofing pigment, talc powder, defoaming agent, flatting agent, flash rust proofing agent and deionized water in ratio, and the invention is characterized in that: hydrophilic monomer is introduced to epoxy resin molecular chain, so the paint has self-emulsifying characteristic; and oxosilane is applied to modifying of the water borne epoxy resin, so that the paint can be heated and self-solidified. The paint has good storage stability and good construction performance, film can be fast dried and has high rigidity after being dried, the film is bright and smooth, water proof, corrosion resistant, washing resistant, good in comprehensive performance and low in cost. The invention can meet the requirement of anticorrosive paint in the fields of storage tank, bridge and the like.

The invention discloses a grinding and polishing pad for a cured grinding material based on thermal initiation curing and a preparation method thereof, applied to the fields of precise and super precise grinding and polishing processing. The grinding and polishing pad is characterized in that a grinding material layer (1) contains the following components in percent by mass: 1-40 percent of grinding material with the granularity of 50 nanometers to 40 micrometers, 10-60 percent of prepolymer of polyacrylic ester, 0.5-7 percent of free radical / anions / oxidation-deoxidation thermal initiating agent, 0-2 percent of grinding material surface modifying and dispersing agent, 0-5 percent of accelerator, 0-20 percent of performance tuning additive and 5-40 percent of activated thinner of esterified acrylic acid. The preparation method of the grinding and polishing pad comprises the following steps of: (1) sufficiently and uniformly mixing raw materials; (2) preparing a polishing pad mould and preparing an abrasive particle layer by mould pouring, heating and curing; and (3) bonding the grinding material layer with an elastic or (and) rigid layer by using a bonding agent according to requirements to obtain the grinding and polishing pad required by the invention. The grinding and polishing pad prepared by adopting a thermal initiation curing method has stable processing performance, high processing efficiency and functions of hydrophily and self-correction and is suitable for precise and super precise processing.

The present invention relates to a thermal storage and insulation microcapsule for a building material and a preparation method thereof. An inner wall material employs toluene diisocyanate and polyethylene glycol as a polymerization monomer, which wraps a core material via interfacial polymerization; and an outer wall material employs toluene diisocyanate, diethylenetriamine, ethanediamine or piperazine as a polymerization monomer, which wraps an inner nuclear shell via interfacial polymerization. Capsule wall of the thermal storage and insulation microcapsule of the invention has advantages of thermosetting property, high mechanical strength, and improved abrasion resistance and durability.

The invention relates to a method for preparing hybrid film through graphene / nano crystalline cellulose dispersion liquid. The preparation method comprises the following steps: respectively dispersing oxidized graphene obtained by oxidation treatment and nano crystalline cellulose in a dispersing agent, and then, gradually dripping nano crystalline cellulose dispersion liquid into oxidized graphene dispersion liquid to obtain graphene / nano crystalline cellulose dispersion liquid, adding a reducing agent under ultrasonic or mechanical stirring condition to reduce the oxidized graphene, inserting the crystalline cellulose between graphene pieces to prevent aggregation between the graphene layers and to form uniformly dispersed and stable graphene / nano crystalline cellulose dispersion liquid, and then, preparing a graphene / nano crystalline cellulose hybrid film through such methods as spin coating, spray coating, film casting, and the like. The prepared hybrid film has high uniformity, and the higher the content of the graphene in the hybrid film, the stronger the thermal stability and conductivity of the hybrid film are; the higher the content of nano crystalline cellulose in the hybrid film is, the smaller the contact angle of the hybrid film is, and the stronger the hydrophilicity is.

The invention relates to the technical field of softening agents, in particular to a ternary polymerization block polyether amino silicon oil softening agent. The structural formula is shown in the description, wherein R=-CH2CH2CH2, -CH3 or -CH2CH3, R'=C1-22 alkane, PO=OC3H6, EO=OC2H4, a and b are any integer from 5 to 24, c is any integer from 10 to 60, and n is any integer from 10 to 60. Yellowing, instability and hydrophobicity of ordinary amino silicon oil are overcome, fabric has excellent hand feeling, hydrophilia, washability and stability, and the softening agent is suitable for various kinds of pure cotton fabric, cotton-polyester blended fabric, wool and other kinds of fabric.

The invention relates to a preparation method of a nanofiber separation composite membrane with a gluing transition layer. The method comprises the steps of: (1) preparing a gluing layer macromolecule solution; (2) immersing a nanofiber non-woven fabric into the gluing layer macromolecule solution for treatment, so that a gluing layer can form on the surface of the nanofiber non-woven fabric; (3) preparing a functional barrier layer on the gluing layer, and conducting a heat treatment or chemical treatment finally, thus obtaining the nanofiber separation composite membrane. Being simple and practicable, the preparation method provided in the invention has easily available raw materials and low cost. And the nanofiber separation composite membrane of the invention can be widely used in the fields of nanofiltration, reverse osmosis and the like.

The invention discloses a preparation method of a polylactic acid glycollic acid-polypeptide-polyethylene glycol diblock-grafted copolymer. The method comprises the following steps: 1, adding a polypeptide homopolymer, diisocyanate, a catalyst and a solvent to a dry reactor, reacting in an inert atmosphere under stirring at 50-55DEG C for 40-60min, and removing excess diisocyanate through a dialysis process to obtain a terminal -NCO group-containing polypeptide homopolymer; 2, adding the terminal -NCO group-containing polypeptide homopolymer, the catalyst and the solvent to the dry reactor, adding polylactic acid glycollic acid monolauryl ether, reacting in an inert atmosphere under stirring at 50-55DEG C for 50-70min to obtain a polylactic acid glycollic acid-polypeptide diblock copolymer; and 3, adding the polylactic acid glycollic acid-polypeptide diblock copolymer, a catalyst and the solvent to the dry reactor, adding polyethylene glycol monomethyl ether, and reacting in an inert atmosphere under stirring at 55-58DEG C for 2-4d to obtain the polylactic acid glycollic acid-polypeptide-polyethylene glycol diblock-grafted copolymer. The preparation method is simple.

The invention provides a novel collagen protein-based PEG composite fiber and spinning technology, comprises extracting collagen protein, preparing collagen protein-PEG blending spinning original liquid, spinning composite fiber, preparing coagulating liquid and fixing fiber, and carrying out acetalation process of composite fiber and the like, wherein collagen protein is extracted through alkali method or enzymatical method from chrome leather scraps, and can be also extracted from raw hide or heel tendon of healthy animals through enzymatical method. PEG is high molecular polymer which has biocompatibility. Spinning fluid which has certain concentration and viscosity is prepared through mixing collagen protein 100 parts and PEG 5-30 parts according to weight by parts, then composite fiber is prepared through wet spinning, and collagen protein-based composite fiber which is used in fabric needs carrying out acetalization and stretching and the like to improve intensity, swellability, water-absorbing quality and the like of composite fiber. The collagen protein-based PEG composite fiber which is disclosed by the invention can be both used in fabric material and in biological medical material.

The invention discloses an overall-bamboo anti-cracking stewing, stewing and filling, and drying method. The method comprises the following steps of: stewing a bamboo section in mixed solution of sodium chloride and acetic acid at the temperature of 100 DEG C under normal pressure, wherein bamboo green is removed from the bamboo section and a hole is punched on a bamboo joint or a bamboo wall; stewing and filling the bamboo section in the mixed solution of alum and polyethylene glycol at the temperature of 100 to 200 DEG C and under the pressure of 0.1 to 1.6 MPa; performing low-temperature drying on the bamboo section in a wood steam drying kiln; hydrofuging the drying kiln until the moisture content of the bamboo section reaches 5 to 20 percent; and unloading an overall-bamboo after slowly reducing the temperature of the kiln to indoor normal temperature. After the treatment, the overall-bamboo has the characteristics of better dryness and anti-cracking effect, improved stability, weather resistance and strength, and prolonged service life.

The invention discloses a strong lysis bacteriophage for splitting NDM-1 positive Klebsiella pneumoniae clinical isolates, and an application of the strong lysis bacteriophage used as a biological preparation in the prevention and treatment of NDM-1 Klebsiella pneumoniae induced infection and pollution. The preservation number of the bacteriophage is CCTCC M 2015760, and the bacteriophage has a regularly icosahedral head and a telescopic tail, and belongs to a Myoviridae double-stranded DNA bacteriophage. The bacteriophage has strong kilign activity and wide bacteriophage lysis spectrum, can be used for preparing medicines for preventing and treating NDM-1 Klebsiella pneumoniae induced bacterium infection, and also can be used for killing NDM-1 positive Klebsiella pneumoniae in culture environment and medical environment.

The invention discloses a light-curing hydrophilic lubricating coating as well as a preparation method and a using method thereof. The light-curing hydrophilic lubricating coating comprises the following components by weight percent: 1-40% of hydrophilic resin with light activity, 0.05-2% of a hydrophilic cross-linking agent with light activity, and 58-98.9% of a solvent. The hydrophilic lubricating coating has hydrophilia, has an excellent lubricating property after being wetted, and enhances adhesive force due to the action of the cross-linking agent. The hydrophilic lubricating coating is suitable for the fields such as medical treatment, material modification, and the like.

The invention discloses a method for preparing a polypeptide-polylactic acid-polyethyleneglycol dual-graft copolymer. The method is characterized in that the molecular weight of a polypeptide chain segment in the copolymer is 20000-50000; the molecular weight of a polylactic acid chain segment is 1000-2000; and the molecular weight of a polyethylene glycol chain segment is 500-700. The preparation method comprises the following steps of: 1) synthesizing a polypeptide-polylactic acid graft copolymer, namely, adding a polypeptide homopolymer, polylactic acid lauryl ether, a solvent and a catalyst to a dry reactor, stirring and reacting for 3-4 days under an inert atmosphere at 55-58 DEG C, so as to prepare the target in manners of filtering, dialyzing and drying; and 2) synthesizing the polypeptide-polylactic acid-polyethyleneglycol dual-graft copolymer, namely adding the polypeptide-polylactic acid copolymer, the catalyst, the solvent and the methoxy polyethylene glycol to the dry reactor, stirring and reacting for 2-3 days under the inert atmosphere at 55-59 DEG C, so as to obtain the target in manners of filtering, dialyzing and drying. The method is simple in process; and the obtained target is a novel biodegradable material.

The invention relates to a preparation method of a block silicone oil softener. There are no preparation methods of block silicone oil softeners having the advantages of reliable performances, environmental protection and simple process at present. Raw materials used in the preparation method comprise, by weight, 25-35 parts of block silicone oil, 2.5-4.0 parts of isomeric fatty alcohol polyoxyethylene ether, 0.2-0.3 parts of acetate acid gracial and 60.7-72.3 parts of water. The preparation method comprises the following steps: adding the isomeric fatty alcohol polyoxyethylene ether and the block silicone oil to a reaction bottle, uniformly stirring, emulsifying for 5-10min, adding 15-20 parts of water to obtain a block silicone oil softener precursor, stirring for 10-20min, adding acetate acid gracial and residual water to the block silicone oil softener precursor, uniformly stirring, and filtering to obtain the block silicone oil softener having a pH value of 5-6. The preparation method has the advantages of simple process and easy preparation, and the prepared block silicone oil softener has the advantages of reliable performances and environmental protection.

The invention belongs to the field of flue gas purification technology, and particularly relates to an adsorbing agent for separating CO2 in the flue gas, and a preparation method of the adsorbing agent. The adsorbing agent comprises a carrier, an active component and an auxiliary agent, wherein the carrier is one or more of coke, activated carbon, carbon fiber (CMS), charcoal and carbon-containing solid material; the active component is one or more of monoethanolamine, diethanolamine, tetraethylenepentamine and pentaethylenehexamine; and the auxiliary agent is one or more of K2CO3 and carbon nano tubes (CNTs). The preparation method of the adsorbing agent comprises the steps of: soaking, filtering, drying in the hydrogen environment and the like. The adsorbing agent has the characteristics of hydrophilicity, high adsorption capacity for CO2 under the low-pressure condition, low nitrogen adsorption capacity, easiness in desorption, simple preparation technology, low production cost and the like.

The invention discloses a grapheme-containing aqueous antibacterial environment-friendly coating and a preparation method thereof, and belongs to the field of waterborne coatings. The graphene-containing aqueous antibacterial environment-friendly coating comprises the following components in parts by weight: 20 to 70 parts of aqueous film-forming substance, 3 to 20 parts of graphene-based antibacterial filler, 1 to 10 parts of photocatalyst. 2 to 10 parts of pigment, 0.2 to 2 parts of auxiliary agent, and 5 to 15 parts of curing agent. The preparation method comprises the steps of: preparationof the graphene-based antibacterial filler, pre-mixing, sand milling, diluting and packaging. The graphene-containing aqueous antibacterial environment-friendly coating disclosed by the invention hasgood stability, fast drying time, excellent adhesion performance, obvious antibacterial and bactericidal effects, zero VOC emission, environmental friendliness, non-toxicity and convenience for construction.

The invention relates to a chitosan nano fibrous membrane adsorbing material and a preparation method thereof. The preparation method for the chitosan nano fibrous membrane adsorbing material comprises the steps as follows: chitosan spinning liquid is added into electrostatic spinning equipment; a chitosan nano fibrous membrane is prepared by an electrostatic spinning method; and the obtained chitosan nano fibrous membrane is soaked into alkaline liquid, and then is cleaned and dried to obtain the chitosan nano fibrous membrane adsorbing material. The average diameter of the nano fiber for forming the adsorbing material is 10-600nm; and the porosity of the adsorbing material is 15-60 percent. The adsorbing material has the characteristics of biocompatibility, biodegradability, hydrophilicity, low cost, large adsorption capacity and broad material sources. The adsorbing material can effectively absorb heavy metal ions comprising Cu (II), Hg (II), Cd (II) and Pb (II).

The invention relates to a phase change energy storage microcapsule, which takes n-dodecanol as a phase change material and adopts methyl methacrylate-acrylic acid copolymer as a capsule wall material. Ultrasonic-assisted emulsification is adopted, and interfacial polymerization is employed to perform microcapsule packaging. The preparation method of the phase change energy storage material includes: firstly mixing n-dodecanol with an emulsifier, performing ultrasonic emulsification, then conducting mechanical stirring, adding methyl methacrylate and an initiator under 80DEG C water bath to react for certain time, then adding acrylic acid to react, and completing polymerization; and carrying out cooling, filtering, and drying so as to obtain a sample. According to the invention, n-dodecanol is adopted as the phase change material, the phase change temperature can be controlled in the vicinity of room temperature. The methyl methacrylate-acrylic acid copolymer is taken as the capsule wall, which has very good chemical stability and strong adaptability to the environment. Ultrasonic assisted emulsification is employed to form a miniemulsion, and the reaction undergoes more easily. The phase change energy storage microcapsule material provided by invention has the advantages of simple process, low cost, and good stability, and can effectively improve the energy storage effect of a phase change material.

The invention aims at providing a method for preparing a multi-drug multi-coating eluting intravascular stent through ultrasonic atomizing and spraying, wherein VEGF, SZ-21 and other protein drugs, taking chitosan as a drug carrier, form a first coating; the second layer is a shielding layer, which adopts a polymer poly L lactic acid (PLLA) and can be added with polyethylene glycol (PEG) in different proportions to control release speed of drug; the third layer is lipid soluble medicine, such as rapamycin, which uses PLLA as a drug carrier; and a coating at the top end of the fourth layer, same as the second layer, is a shielding layer. Two uniform drug polymer coatings can simultaneously load multiple drugs, and the release speed of the drug can be regulated and controlled by regulating a mixing proportion of the PEG and the polymer, so as to inhibit restenosis and to reduce formation of thrombus simultaneously.

The invention discloses several non-peripherial substituted phthalocyanine metal complexes and making method, which introduces functional group into position a (position 1(4), 8(11), 15(18) and 22(25)) of phthalocyanine complex.

The invention discloses a lycium ruthenicum beverage and a preparation method thereof and provides a beverage prepared by taking dried lycium ruthenicum fruit powder as a main raw material and a preparation method thereof. The lycium ruthenicum beverage is composed of following raw materials by weight percent: 0.1%-7% of the dried lycium ruthenicum fruit powder, 0.05%-3% of guar gum, 0.2%-7% of CMC-Na (Carboxyl Methyl Cellulose-Na), 0.05%-3% of xanthan gum, 3%-15% of erythritol, 0.006%-0.6% of stevioside, 0.01%-0.8% of citric acid, 0.01%-0.4% of sodium citrate, 0.01%-1.5% of tea polyphenol and the balance being water. The beverage is prepared by taking the dried lycium ruthenicum fruit powder as the main raw material; reasonable compatibility and synergistic effects of all the components are utilized and the color of a product is amaranth; the lycium ruthenicum beverage has a unique flavor, no astringent and mellow mouth feel, and has the effects of nourishing liver and kidney, replenishing vital essence to improve eyesight and nourishing blood, enhancing the immunity of people, beautifying, resisting oxidization, decaying aging, resisting fatigues, lowering blood pressure and lowering blood sugar.