34results about How to "Increase hydrophilic group" patented technology

The invention belongs to the field of biological medicine, and particularly relates to composite hydrogel for promoting wound healing as well as a preparation method and application thereof. The composite hydrogel is composed of gelatin, antibacterial photodynamic peptide and recombinant human III-type collagen. A photosensitizer Ce6 is introduced for photodynamic antibacterial chemotherapy antibiosis, and the photosensitizer Ce6 generates active oxygen under laser irradiation to cause microbial molecule oxidation and bacterial cell damage and death, so that the photosensitizer Ce6 and antibacterial peptide generate a synergistic effect. The antibacterial composite hydrogel has high biocompatibility, keeps a wet environment around a wound surface, can stably convey loaded antibacterial photodynamic peptide and recombinant human collagen to the surface of the wound, guides fibroblasts to migrate and proliferate and increases deposition of new collagen on blood vessels for reconstructionin a dermal repair process, thereby accelerating wound healing, thereby improving wound healing quality.

The invention relates to a rejuvenating lotion belonging to the field of skin-care products. The rejuvenating lotion has the effects of whitening, moisturizing, resisting oxidization, delaying ageing, improving dull skin to be tender, white, smooth, plump and elastic, diminishing inflammation, removing acnes, resisting radiation and recovering cell viability effects, has natural fragrances of flowers and grasses, and is natural and fresh. The rejuvenating lotion mainly comprises the following components in weight ratio: natural rose with the adding amount of 0.025-0.1 g/ml, natural barbados aloe with the adding amount of 0.01-0.03 g/ml, natural honey with the adding amount of 0.01-0.05 g/ml, natural green tea with the adding amount of 0.01-0.05 g/ml, deep sea mineral substance with the adding amount of 0.0025-0.01 g/ml and marine algae collagen with the adding amount of 0.05-0.1 g/ml.

The invention discloses a preparation method of polylactic-acid-gel-toughened sponge, which comprises the steps of polyurethane sponge pretreatment, preparation of a polylactic acid finishing solution, finishing, cleaning and drying, and the like. The polyurethane sponge piece is subjected to pretreatment and plasma treatment to destroy the microscopic surface of the polyurethane sponge network, and carboxyl and other oxygen-containing active groups are grafted on the surface; the groups react with the amino group on the ethylenediamine-modified polylactic acid macromolecule surface to implement crosslinking; drying is carried out to obtain a polylactic acid film on the polyurethane sponge sheet network structure surface; and the film is beneficial to increasing the rebound rate of the pressed polyurethane sponge. Compared with the untreated polyurethane sponge, the quantity of the hydrophilic groups on the sponge network surface is increased, and the hydrophilicity of the sponge is enhanced. The sponge prepared by the method has certain antibacterial property and flame retardancy.

The invention belongs to the technical field of protein modification, and particularly discloses a casein-soybean polysaccharide crosslinked product and a preparation method and application thereof. Transglutaminase catalyzed soybean polysaccharide and casein are used to be in Maillard reaction to prepare the casein-soybean polysaccharide crosslinked product. Soybean polysaccharide has high physiological activity, and the crosslinked product can be quickly formed in a mild condition through Maillard reaction by adding transglutaminase, so that casein is enabled to carry soybean polysaccharide,amphiphilicity of casein is improved, and physical stability of an oil-in-water emulsion of casein is improved.

The invention relates to a preparation method of rice straw feed, which is designed for providing feed with good nutrition and palatability. The preparation method of the rice straw feed comprises thefollowing steps: S1, cutting rice straw into sections; S2, sterilizing the rice straw in a crawler-type high-temperature chamber for 20-50min at 110-130 DEG C, and performing electron beam irradiation according to an irradiation dose of 18kGy by using an electron accelerator; S3, adding water and a microbial fermentation agent into rice straw sections for anaerobic fermentation; S4, after completion of the fermentation, adding 5% of a mixture of corn flour, tapioca flour and high-gluten flour and 0.05% of table salt in terms of the total weight of the rice straw, uniformly stirring for mixing, and granulating to obtain feed granules; S5, spraying the feed granule with an antiseptic solution and a mildew-proof solution in a high-pressure spraying manner, and airing naturally to complete preparation of the feed. The feed prepared by the preparation method provided by the invention can maintain and increase nutrients in the straw to the maximum extent and facilitates digestion of an animal.

The invention discloses a preparation method of acrylic acid grafted modified graphene with high adsorption performance, which comprises the following steps: uniformly dispersing graphene in a mixed acid solvent, carrying out ultrasonic acid oxidation pretreatment, cleaning the solution with deionized water, centrifugingthe solution, and drying the solution to obtain a preliminary modified graphene material; after acrylic acid polymerization modification, cleaning and centrifuging the material with deionized water, and drying the material to obtain a modified graphene material; then adding a certain amount of the modified graphene material into a dye solution with a certain volume and concentration, and measuring the concentration of the adsorbed dye after a period of time. According to the invention, acrylic acid long chains are grafted on the surface of the graphene modified by the method, so that the graphene contains a large number of oxygen-containing groups, the dispersion performance of the graphene can be fully improved, and the adsorption performance of the graphene to dyes is remarkably improved.

The invention disclosed plasma fiber modification technology based oversized jacquard fabric which is obtained through plasma yarn pretreatment process and weaving process. The plasma yarn pretreatment process includes: performing plasma pretreatment by pumping in gas under the condition of 30-55Pa and 100-160W for 5-15 minutes, and the gas is the mixed gas of one or two of air and oxygen; the weaving process includes: pretreated warp and weft is woven in plain weave according to certain arrangement and combination of warp and weft to form the oversized jacquard fabric. The plasma fiber modification technology based oversized jacquard fabric has the advantages that the fabric is good in appearance quality and inherent quality and neat in fabric surface; through reasonable arrangement of the warp and weft and mutual collocation of the warp and weft of different colors, high third dimension effect of the fabric is achieved, fashion sensor is good, and various clothes and household articles and the like made from the fabric are novel in appearance and unique in appearance effect.

A dry treatment method for decreasing contact angle on an optical film surface, includes providing an optical film and subjecting the optical film to ozone treatment to increase hydrophilic groups on a surface of the optical film so as to decrease contact angle on the optical film surface. The optical film treated with ozone will increase hydrophilic groups on the surface of the optical film to decrease its contact angle thereon. This method is able to reduce disadvantage of higher expense and inconvenient use in prior art of wet method.

The invention relates to an active inkjet printing dye mixture. The active inkjet printing dye mixture contains at least one dye of a structure such as a formula (1), optional at least one dye of an formula (2), and/or optional at least one dye of an formula (3) and/or optional at least one dye of an formula (4), wherein M1, M2, M3 and M4 are H or sodium or potassium respectively. At least one ofR1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 is a fiber active group; and T1 is halogen. According to the active inkjet printing dye mixture, yarn-dyed fabric is enabled to have high leveling propertiesand high color fixing rate, unprecedented solubility is achieved, the active inkjet printing dye mixture can be better applied to inkjet printing of an automatic pulp blending system, and meanwhile,unfixed dyes are easier to wash off (Please see the description for the formula).

The invention discloses a preparation method for cellulose base water-absorbent resin, and belongs to the field of high polymer materials. Cellulose, ethylenediamine and oxidizing agent solvent react to be filtered to obtain filter residues; then after the filter residues are mixed with N-vinyl pyrrolidone and the solvent, initiator and cross-linking agent are added to react to be filtered to obtain a filter cake; then, the filter cake is mixed with monochloroacetic acid and water, and stirring reaction is carried out to obtain a product; the product is condensed to obtain concentrated solution; after thionyl chloride is added to react, nitroguanidine is added to react to be subjected to concentration drying to obtain a drying product, i.e., the cellulose base water-absorbent resin. The cellulose base water-absorbent resin has the beneficial effects of relatively good water retaining capacity and salt tolerance and is worth popularizing and using.

The invention discloses a special cerate for redwood furniture. The special cerate is prepared from the following raw materials in parts by weight: 10-18 parts of expanded soil, 20-25 parts of a modified silicon oil emulsion, 15-25 parts of beewax, 10-20 parts of tung oil, 15-20 parts of a microcrystalline wax, 10-15 parts of a rice bran wax, 3-8 parts of sodium lauryl sulfate, 50-70 parts of absolute ethyl alcohol, 3-8 parts of a dispersant, 5-10 parts of an anti-electrostatic agent and 25-40 parts of deionized water. The special cerate for redwood furniture is prepared from the modified silicon oil emulsion, the expanded soil, the microcrystalline wax, the rice bran wax and the like as raw materials and the absolute ethyl alcohol as a solvent under the action of the dispersant and the like, is capable of both nourishing wood furniture, retaining newness and increasing brightness, repairing surface scratch and prolonging the service life of the furniture, has excellent stability and glossiness, in addition has good adhesiveness, and can be well applied to surfaces of red furniture.

The invention discloses a PET/PBT blending modified fiber. The fiber is prepared from, by weight, 30-50 parts of PBT, 80-120 parts of PET, 0.1-0.5 part of 4-methyl-2-(2-methyl-1-propenyl)tetrahydropyran, 0.5-1 part of a nucleation promoter and 0.5-1 part of a hydrophilic modifier, wherein the hydrophilic modifier is a mixture of N-(3-triethoxysilylpropyl)-4-hydroxybutanamide and 1-methoxy-2-epoxymethoxy)benzene. PBT and PET serve as a main body, blending is conducted, a blending material is prepared, by adding the hydrophilic modifier, a hydrophilic group on the surface of the blending material is increased, and thus in the process of using water-based dye for dyeing, the color fastness of the water-based dye can be improved.

The invention provides a preparation method of an inorganic fiber toughening agent for oil and gas well cementing cement slurry, and relates to the technical field of unconventional oil and gas well drilling and completion, and the preparation method comprises the following steps: (1) single fiber stirring-ultrasonic pretreatment process; (2) a multi-fiber suspension-stirring mixing process; (3) performing a mechanical roughening process on various fiber surfaces; (4) a fiber surface modification process; (5) a spray drying process; the inorganic fiber toughening agent for the oil and gas well cementing cement slurry prepared by the invention can be well compatible with a cement slurry system, does not change the rheological property of the cement slurry, and can effectively reduce the brittleness of set cement, improve the mechanical flexibility of the set cement and enhance the cyclic load resistance of the set cement; and the cement sheath sealing integrity in the oil-gas well production period is met.

The invention discloses a preparation method of a liquid feed for suckling pigs. The preparation method comprises the following steps of preparing fermented corn powder, preparing a citrus peel extract, and preparing the feed, wherein the step of preparing the citrus peel extract comprises the substeps of drying citrus peel, performing crushing, adding an extraction solution containing 2,6-Di-tert-butyl-4-methylphenol and catechin, performing ultrasonic extraction, performing filtering, performing repeated extraction, and merging filtrate to obtain the citrus peel extracting solution. The preparation method disclosed by the invention has the beneficial effects that the preparation method is simple and feasible, the prepared feed is similar to breast milk in shape, development in stomachs and intestines of the suckling pigs is facilitated, the prepared feed contains a large quantity of carotenoids, water-soluble selenoprotein and selenium amino acid, the feed is easy to absorb and utilize by the suckling pigs, and the liquid feed has the effect of killing pests and is good in palatability.

The invention discloses a high-efficiency water reducing agent and a preparation method thereof. The efficient water reducing agent is prepared from the following components in parts by weight: 20 to40 parts of macromonomer, 2 to 10 parts of acrylic acid, 0.5 to 5 parts of acrylamide monomer, 0.05 to 1 part of oxidation type initiator, 0.05 to 1 part of reduction type initiator, 0.1 to 1 part ofchain transfer agent and 50 to 80 parts of deionized water; the polyether group of the high-efficiency water reducing agent can generate a steric hindrance effect among cement particles, so that the slump of concrete is kept good and the concrete has good compressive strength; meanwhile, a large number of-CN-bonds are introduced, hydrophilic groups in the water reducing agent are improved, a waterfilm is formed, a very good lubricating effect is achieved, the sliding resistance among cement particles can be effectively reduced, and therefore the fluidity of the concrete is further improved.

The invention discloses a towel with cool and refreshing functions. The towel is prepared from the following raw materials in parts by weight: 25-35 parts of cool fiber; 15-25 parts of modified viscose fiber; 50-60 parts of 10% sodium carbonate solution and 10-15 parts of refined sulfur cotton, wherein the cool fiber is added into the 10% sodium carbonate solution, heated to 90-100 DEG C, cooked for 1 hour at the temperature and taken out and washed with deionized water for three times. The invention further discloses a preparation method of the towel with the cooling and cooling functions. Inthe cool fiber preparation process, terephthalic acid and ethylene glycol are added into a reaction kettle; terephthalic acid and ethylene glycol are subjected to esterification reaction to generatea compound A; polyethylene glycol ether and dimethyl isophthalate-5-sodium sulfonate are added into a polycondensation kettle, an esterification reaction is carried out between polyethylene glycol ether and dimethyl isophthalate-5-sodium sulfonate, a compound A is added, a condensation polymerization reaction is carried out between the compound A and the compound A, and a polymer B is generated and is of a honeycomb microporous structure.

The invention provides a method and device for improving the synthesizing of 3,4-methylenedioxy mandelic acid through emulsification. Based on the principle that 3,4-methylenedioxy mandelic acid has both lipophilic and hydrophilic groups, the method takes a resultant as an emulsifying agent so as to make the separating of a product simpler and easier; a water reducing agent is added during reaction and can be directionally adsorbed on the surfaces of oil phase droplets, so that the surfaces of the oil phase droplets can carry charges, electrostatic repulsion can be generated, and therefore, the dispersing effect of the water reducing agent can be achieved, the oil phase can be dispersed, and flowability can be increased; through the lubricating function of the water reducing agent, friction can be reduced by increasing the hydrophilic groups to form solvated water films, so that a 1,3-benzodioxole phase during the viscous stage of the product can be more dispersed, the lubricating function can be achieved by forming a water film form, the mass and heat transfer process of a reaction system can be uniformed, and the purity and yield of the product can be enhanced; and an inert solvent is dropwise added during reaction, so that the conversion rate of the reaction can be enhanced on the basis of increasing the flowability of the product, and the viscous problems of the product canbe solved. Thus, the device is provided for the above technologies.