19733 results about "High polymer" patented technology

The invention relates to a controlled release bait material and a preparation method thereof. The controlled release bait material refers to small pills, micro-pills, microcapsules, microspheres, particles or sticks prepared from raw materials including a basic material, a feed attractant, a bonding agent, a hydrophilic high-polymer material, a water-insoluble high-polymer material, a quick-release material, a filler, a colorant, a flavoring agent and the like through a preparation means; and the controlled release bait material can be coated for improving the controlled release effect. The invention further discloses a preparation method of the bait material. The controlled release material has rapid and lasting attracting force on fishes, the fish attracting time can be adjusted according to the habit of a fisherman and the habits of fishes, the food ration and frequency of fishes are increased, the fishing success rate can be increased, the food intake of fishes in cultivation of fishes can be increased, the corrosion ratios of remnant feeds and feeds in water bodies are reduced, the utilization ratios of feeds is increased, and the water body environmental pollution is lowered. The preparation method provided by the invention is suitable for industrial production.

The invention relates to compound millimicron fibrous membrane material of cellulose and cellulose matrix which can perform the biological degradation and the biological absorption and a preparation method thereof and an industry and medical purpose, and belongs to the biological macro-molecule non woven fabric material field which can perform the biological degradation and the biological absorption. Electrostatic spinning equipment is used to obtain the fibrous membrane material which can perform the biological degradation and the biological absorption, the weight of the cellulose is taken as basic reference, the component of the material comprises cellulose more than 0 and less than or equal to 100 weight parts, other biomacromolecule more than and equal to 0 and less than 100 weight parts, 0 to 10 weight parts of curative drug or 0 to 50 weight parts of inorganic catalyzer and / or 0 to 50 weight parts of inorganic strengthening agent. The material of the invention has good biological compatibility, biological degradation property and degradation absorptivity, and can be used for haemostasia material, wound cladding material, organization engineering supporting rack material, the transportation and release of medicine, artificial skin and blood vessel, and postoperation anti blocking material, beauty material and catalyzer carrier, filtering membrane and radiation protection material and so on.

The invention relates to a gelatin nanometer fiber film which can biologically degrade and absorb, and relative preparation, wherein it via the control on static spin realizes the static spin on gelatin water solution and gelatin/macromolecule mixture water, to obtain the nanometer fiber, which comprises: 0 A61L 27/14 A61K 45/00 D01D 5/00 D01F 1/00 A61L 27/60 A61L 33/06 A61L 24/04 A61L 15/22 A61F 2/02 2 14 3 2005/11/9 1961974 2007/5/16 000000000 Institute of Chemistry Chinese Academy of Science Beijing 100080 Han Zhichao He Aihua Li Junxing libai 31002 Shanghai Patent Agency of the Chinese Academy of Sciences No.319 Yueyang Road, Shanghai 200031

The present invention provides one kind of water gel containing natural high molecular material and its preparation process. The water gel has cross-linking degree of 70-95 % and water absorption of 500-80000 %, and contains natural high molecular material or its derivative selected from chitin, chitin derivative, chitosan, chitosan derivative, carrageenin, etc. The water gel may have synthetic high molecular material, inorganic filler, cross-linking sensitizer, medicine and other assistant added. It is prepared through radiation cross-linking, with the radiation dosage being 10-40 kGy. The water gel of the present invention has high water absorption, high flexibility, good medicine slow releasing performance, and may be used in wound dressing, etc.

The invention relates to a method for preparing shell-core structured medicament nano fiber by coaxial electrostatic spinning technology, comprising: (1) dissolving high molecular polymer and medicament in mass proportion of 60-99.9:0.1-40 in organic solvent with high volatility, and stirring until complete dissolution to obtain shell solution; (2) dissolving one or more than one of natural polymer, medicament, and bioactive factor in the solvent, or dissolving the same in super pure water under aseptic condition to obtain core solution; and (3) carrying out coaxial electrostatic spinning, setting the spinning voltage at 15-25kv, the reception distance at 8-20cm, the spinning pushing speed at 0.1-1.5mL/h, and the spinning nozzle as 0.9mm, to obtain the shell-core structured medicament nano fiber. The preparation method is simple in operation, mild in reaction condition, low in cost and favorable for economic benefit; in preparing the shell-core structured medicament nano fiber, two or more than two medicaments can be simultaneously loaded and released, thus meeting requirements of tissue regeneration or patients.

The invention provides a plastic profiled bar decorative layer combination material with natural texture for co-extrusion molding, formed by mixing 15-80wt% of plastic substrate, 15-80wt% of composite pigment and 0-50wt% of inorganic powder, wherein the composite pigment comprises pigment or dye with natural color texture effect; inorganic pigment and inorganic powder in the composite pigment need to be respectively and actively processed by a surface conditioning agent or a coupling agent; the combination material provides the surface of the plastic profiled bar with a high-polymer material co-extrusion composite layer with stronger adhesion and endows the surface of the plastic profiled bar with the metal-like texture effects, such as the colors of gold, silver, copper or other natural metal materials. The decorative layer has a certain thickness, high hardness, strong scratch resistance and longer product service life and can be used for industries, such as electronic appliance shells, plastic color windows and doors, plastic profiled bars, furniture sheets, and the like.

The present invention belongs to the field of polymer material technology, and is especially one kind of modified polypropylene material comprising at least polymer base, strengthening agent and toughening agent. The polymer base may be polypropylene or polypropylene composition; the strengthening agent is inorganic or organic matter with great aspect ratio, such as inorganic or organic crystal whisker, fiber, mica, etc; and the toughening agent may be polypropylene beta-nucleater, rubber elastomer, etc. The modified polypropylene material has high strength, high toughness, etc and may be applied widely in automobile, pipeline, electric appliance and other fields.

The invention discloses a composite natural polymer gel material with a cross-linking agent. The material comprises hydrogel, organogel, aerogel and bioplastics and mainly overcomes the problem of low mechanical strength of conventional natural polymer gel materials. According to the invention, a certain amount of the cross-linking agent is added into a natural polymer water-based solution or dispersion liquid, then stirring is carried out, the obtained mixture is placed in a non-solvent for physical cross-linking, and then washing is carried out so as to obtain composite natural polymer hydrogel; water in the composite natural polymer hydrogel is replaced with an organic solution so as to prepare composite natural polymer organogel; the composite natural polymer hydrogel or organogel is dried so as to prepare composite natural polymer aerogel; the composite natural polymer aerogel is subjected to hydrophobic treatment so as to obtain hydrophobic aerogel; the composite natural polymer aerogel is subjected to heat treatment so as to obtain carbon aerogel; and one or more selected from the above-mentioned gel materials are subjected to high-temperature pressing so as to prepare composite natural polymer bioplastics. The composite natural polymer gel material prepared in the invention has the advantages of excellent mechanical properties, a high specific surface area, high elongation at break, etc., and can be easily processed into molded products of a plurality of forms.

The present invention belongs to the field of mnacromolecule, relating to the fluorine-containing polyester of low surface energy and the preparation method of the fluorine-containing polyester. The polyester has the following chemical structure (1): wherein R _f C _{is the straight chain of 2} - 21 C or the branch-chain pseudo-perfluoroalkyl; R₁, R₂ is the alkyl, aryl, or naphthenic base of the C₁-C₈; E is -(CH₂) _m-; formula (3) or formula (4); R' is H or the straight chain or the branch-chain alkyl under C₄; m is an integer between 0 or 10. The polyester preparation method is that dibasic acid or the correspondent diester, dihydric alcohol and perfluoroalkane, which are 0.05 percent to 10 percent of the total material weight, are fused and polymerized under vacuum condition. The polyester preparation method at the pseudo-perfluoroalkyl sealed end is simple, and is of good drainage and oil dredging properties. The present invention can be widely used in antifouling coatings, and is of important development and application value.

The invention discloses a method for preparing nano ceramic fibers, which is implemented by the following steps: 1, preparing 3 to 15 volume percent of 10 to 30 nanometer ceramic nanoparticles, 5 to 30 volume percent of spinnable high polymer, 0.5 to 5 volume percent of dispersant and the balance of solvent, wherein the total volume of the raw materials is 100 volume percent; 2, adding the spinnable high polymer into the solvent, heating the mixture in a water bath with magnetic stirring to obtain solution of spinnable high polymer; 3, adding the ceramic nanoparticles and the dispersant into the solution of spinnable high polymer obtained by the step 2, keeping the temperature of the mixture constant in a water bath, performing dispersion and ultrasonic dispersion, and performing swelling at a constant temperature to obtain ceramic nanoparticle/spinnable high polymer/solvent spinning solution; 4, controlling the electrostatic spinning process parameters of the spinning solution obtained by the step 3 to obtain nano fibers; and 5, sintering the nano fibers at 400 to 1,200 DEG C to obtain nano ceramic fibers.

The invention relates to a blue light cut nano compound resin material and lens and a manufacturing method thereof. The blue light cut nano compound resin material comprises macromolecule resin as well as core-shell type transition metal oxide nano particles and an ultraviolet light absorber which are dispersed in the macromolecule resin, wherein the core-shell type transition metal oxide nano particles account for 0.2-2% of the total weight of the resin, and the ultraviolet light absorber accounts for 0.5-5% of the total weight of the resin; particle size of nano particles is 20-50nm; the shell is a surface active agent, and thickness is 3-10nm; the nano particles and the ultraviolet light absorber are fully dispersed in a macromolecule monomer, and a prepolymerization and secondary polymerization technological process is carried out, so that the blue light cut compound resin material is obtained. The manufacturing method of the blue light cut compound resin material is simple in technology and good in reproducibility, the manufactured resin material and lens can efficiently and permanently shield high energy harmful blue light and ultraviolet light with wavelength within the range of 380-450nm, vision is clear and colour vision is soft under strong and weak light environments respectively, and the blue light cut compound resin material has excellent overall performance.

The invention discloses a thin film produced by using starch fiber waste plastic. The new breakthrough and technical innovative points are applied to an environment-friendly plastic synthesized thin film or sheet. The produced environment-friendly plastic synthesized thin film or sheet comprises the following raw materials of 10-60 percent of high polymer waste plastic (regenerated plastic), 10-60 percent of modified starch, 10-50 percent of natural plant fiber, 5-30 percent of inorganic material and 2-15 percent of modifier, compatilizer and processing aid. In the plastic-synthesized thin film or sheet, the thickness of the membrane is 0.01-0.6mm and the thickness of the sheet is 0.6-3mm. The preparation of the thin film has the advantages that the environment-friendly practical thin film or sheet with degradation time with different efficiencies, transmissivity, stress degrees and the like can be obtained by adjusting the mixture ratio of various materials.

The present invention discloses the preparation process of nanometer silver solution and nanometer silver powder with polymer as stabilizer. Water soluble polymer as stabilizer in solution of 0.001-0.05 g/ml solution and silver nitrate in solution of 0.001-0.1 mol/L are compounded and reduced with water soluble reductant in solution of 0.001-0.2 mol/L to obtain nanometer silver particle of 5-100 nm size. The nanometer silver particle in solution may be further deposited and washed with sodium hydroxide solution, dried and crushed to obtain nanometer silver particle of 5-100 nm size. The prepared solution may be used in medical article, and prepared nanometer silver powder may be used widely in household appliance, plastic product, paint, etc. The present invention is environment friendly, low in cost and simple in operation, and the prepared nanometer silver particle has extremely powerful antibiotic capacity and wide antibiotic spectrum.

The invention discloses a polymer compound core body and a preparation method thereof and relates to a polymer compound core body. The invention provides a polymer compound core body which is mainly used for paper diapers and panty diapers, the polymer compound core body which cam not form lump and can not be broken or delaminated and a preparation method thereof. The compound core body is provided with an airlaid paper surface layer, an airlaid paper bottom layer and a bulking non-woven fabric layer, wherein the bulking non-woven fabric layer is arranged between the airlaid paper surface layer and the airlaid paper bottom layer and is adhered to the airlaid paper surface layer and the airlaid paper bottom layer by an adhesive; and water absorbent resin is uniformly penetrated in the bulking non-woven fabric layer. Urine can be rapidly and completely penetrated to the polymer compound core body; the airlaid paper surface layer of the compound core body can effectively absorb the urine; a polymer water absorbent resin of the polymer compound core body can effectively absorb and store the urine; and the bulking non-woven fabric layer can ensure that the urine rapidly penetrates towards the direction of the bottom layer, thus the water-absorbing quantity is large, the surface layer is kept in a drier state and a human feels comfortable.

The invention relates to a nanometer cellulose/polyvinyl alcohol gel composite material, which is characterized by comprising hydrogel and aerogel. A preparation method of the nanometer cellulose/polyvinyl alcohol gel composite material comprises the following process steps of 1, nanometer cellulose preparation by a chemical combination mechanical treatment method; 2, composite hydrogel preparation; and 3, composite aerogel preparation. The nanometer cellulose/polyvinyl alcohol gel composite material has the advantages that the composite aerogel belongs to a porous amorphous solid material consisting of nanometer level colloid particles or high-polymer molecules, and a unique open nanometer level porous structure and a continuous three-dimensional reticular structure are adopted, so the density is extremely low, the specific surface area is high, and the porosity is high, wherein the solid phase of the aerogel accounts for 0.2 percent to 20 percent of the total volume percentage, the characteristics of high adsorption catalytic capability, low thermal conductivity, low sound resistance, low refractive index and the like are shown, and wide application prospects are realized in the fields of aviation, spaceflight, chemical industry, metallurgy, energy-saving building and the like.