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10505 results about "High polymer" patented technology

Biopolymer nano tunica fibrosa material capable of being biological degraded and absorbed, preparing method and uses of the same

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.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Composite natural polymer gel material

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.
Owner:浙江绍兴万德福生物技术有限公司 +1

Blue light cut nano compound resin material, lens and preparation method thereof

ActiveCN103980643AEvenly dispersedComprehensive and excellent comprehensive performanceOptical partsHigh energyUltraviolet lights
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.
Owner:JIANGSU SHIKEXINCAI CO LTD

Polymer compound core body and preparation method thereof

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.
Owner:厦门造福堂文化传媒有限公司

Nanometer cellulose/polyvinyl alcohol gel composite material

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.
Owner:SHANDONG LVSEN WOOD PLASTIC COMPOSITE

Environment friendly corrosion protection antistatic coating

The invention discloses environmental protection anti-corrosive antistatic coating, the environmental protection anti-corrosive antistatic coating is characterized in that the coating is composed of a first component and a second component, according to the weight parts, the first component accounts for 500 parts to 1500 parts, and the second component accounts for 150 parts to 500 parts; according to the weight percentage, the first component comprises resin accounting for 20 percent to 50 percent, conductive filler accounting for 10 percent to 40 percent and filler accounting for 15 percentto 35 percent; the surplus is the solvent; the second component is a solidifying system. The coating of the invention is the coating layer structure formed through a reaction, the coating layer structure is an interpenetrating network structure of high molecular polymer, and the interpenetrating network structure is a spatial and multidimensional structure, wherein, each crosslinking point of thestructure is a linkage of a polar group, simultaneously, each crosslinking point is dispersed between the interpenetrating network structure of high molecular polymer and applied with the nanometer filler and the anti-corrosive filler linked with the crosslinking point, to ensure that the firm system structure has high compactness and resistance to wear, and the coating has super resistance to penetration and corrosion resistance.
Owner:正臣新材料科技(上海)有限公司

Dopamine compound modified or coated nano particle modified polymer composite material and preparation method thereof

The invention belongs to the field of nano particle or polymer composite material preparation and particularly relates to a dopamine compound modified or coated nano particle modified polymer composite material and a preparation method thereof. The composite material is composed of nano particles with surfaces modified or coated by dopamine compound and a high molecular polymer matrix. The nano particles with the surfaces modified or coated by the dopamine compound are uniformly scattered in the high molecular polymer matrix. According to the dopamine compound modified or coated nano particle modified polymer composite material, the dopamine compound modified or coated nano particles are utilized, the dopamine compound can aggregate spontaneously on the surface of a nano particle material to form a thin film to enable the surfaces of the nano particles to be connected with a function group such as hydroxyl and amidogen with strong activity, the compatibility of the nano particles in the high molecular polymer can be increased, and the dopamine compound is favorable for causing the nano particles and the high molecular polymer matrix to further generate secondary reaction. The dispersibility of the nano particles is good, and the stability is good in the dopamine compound modified or coated nano particle modified polymer composite material, and the comprehensive performance of the composite material can be improved remarkably.
Owner:WUHAN UNIV OF TECH

Graphene-containing silicon rubber heat-conducting composite material and preparation method thereof

The invention relates to the field of heat-conducting high-polymer composite materials, particularly a graphene-containing silicon rubber heat-conducting composite material and a preparation method thereof. The heat-conducting composite material is mainly composed of graphene, an inorganic heat-conducting filler and a silicon rubber matrix, wherein the graphene accounts for 0.1-10 wt% of the silicon rubber heat-conducting composite material, and the graphene constitutes a heat-conducting network in the heat-conducting composite material. The method comprises the following steps: uniformly compounding the inorganic heat-conducting filler, graphene, crosslinking agent and other assistants and silicon rubber on a double-roll open mill to obtain a heat-conducting silicon rubber prepolymer; and carrying out primary vulcanization on the prepolymer on a flat vulcanizing machine, and carrying out secondary vulcanization in a drying oven to finally obtain the composite heat-conducting silicon rubber. Since the two-dimensional graphene has large thickness-diameter ratio and can easily constitute an effective heat-conducting network in the silicon rubber, a small amount of two-dimensional graphene can obviously enhance the heat-conducting property of the silicon rubber (the heat conductivity coefficient at 40 DEG C is 4.98 W/m.K). The silicon rubber composite heat-conducting material can be widely used in the field of heat dissipation of electronic products.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1

Self-suspended propping agent and preparation method thereof

The invention belongs to the field of fluid mineral product exploration such as petroleum, natural gas and shale gas, and provides a self-suspended propping agent which is prepared by wrapping or partially wrapping a granular framework with a water-soluble high polymer material; the framework consists of solid granules which are sufficient in mechanical strength for bearing crack closing stress and are selected from one or multiple of quartz sand, ceramsite, metal granules, spherical glass granules, sintered monohydrallite, sintered alumina, sintered zirconium oxide, synthetic resin, precoated sand and crushed fruit shell granules; the amount of the water-soluble high polymer material accounts for 0.1-5wt% of that of the framework. The self-suspended propping agent provided by the invention does not need to be fractured by using fracturing fluid which is added with organic macromolecules and is high in cost, and can be fractured by using natural water which can be obtained at any place directly, so that pollution is reduced, and the cost can be lowered. By adopting the self-suspended propping agent provided by the invention, friction resistance of the fracturing fluid can be reduced, and a fracturing support system adopting the self-suspended propping agent has properties which are generally identical to those of conventional fracturing fluid, and is easy to convey and discharge backwards.
Owner:BEIJING RECHSAND SCI & TECH GRP

Preparation method of core-shell structure superfine fiber carrier material for medical dressing

The invention provides a preparation method of a core-shell structure superfine fiber carrier material for medical dressing. The preparation method is basically characterized by specifically comprising the following steps: mixing and dissolving macromolecular polymers into a solvent to obtain a shell layer solution; selecting at least one of a functional high polymer and a medicine and dissolving the functional high polymer or the medicine into a solvent under the aseptic condition to obtain a core layer solution; and performing coaxial electrostatic spinning, placing into a vacuum drying box, and vacuum-drying to remove the residual solvent to obtain the core-shell structure superfine fiber carrier material for the medical dressing. The core-shell structure superfine fiber carrier material for the medical dressing has excellent water-absorbing property, moisturizing property and air permeability, can provide a wet microenvironment for wound healing, is uniform in pore size distribution, and achieves a bacterium blocking effect. The core layer high polymer or medicine can achieve zero-order release through corrosion or diffusion mechanism, so the influence of the environment on the medicine effect is reduced and unnecessary damage to a human body by the medicine is reduced.
Owner:上海必趣医疗科技有限公司

Device and method for increasing grain size of PM2.5 (particulate matter2.5) through turbulent flow and chemical agglomeration coupling

ActiveCN104801420AFacilitate collision contactImprove the growth effectElectrostatic separationParticulatesEvaporation
The invention discloses a device and a method for increasing grain size of PM2.5 through turbulent flow and chemical agglomeration coupling. Dust-containing flue gas sequentially flows through a chemical agglomeration area and a turbulent flow generation area in a flue and finally enters an electrostatic dust collector; when the dust-containing flue gas flows through the chemical agglomeration area, the PM2.5 particles in the flue gas are primarily contacted with agglomeration solution fogdrops sprayed in through a dual-fluid atomizing nozzle, agglomeration solution liquid drops are evaporated, in the evaporation process, the PM2.5 particles are connected through macromolecule chains with polar groups, and the grain size of the PM2.5 is increased; the flue gas flows through the turbulent flow area, the agglomeration solution fogdrops are promoted to collide and contact the PM2.5, the PM2.5 are promoted to collide and contact the crude dust under the turbulent flow disturbance generated by a turbulence bar, the PM2.5 are further aggregated and increased in size, meanwhile, the residence time of the agglomeration solution liquid drops in the flue is prolonged, before entering the electrostatic dust collector, the agglomeration solution liquid drops are completely evaporated, and the particles of which the size is increased through agglomeration are finally moved by the electrostatic dust collector. The agglomeration increasing effect of the PM2.5 is obviously enhanced, and the using amount of an agglomeration solution is reduced.
Owner:SOUTHEAST UNIV

Composite flame retardant containing microcapsule-coated intumescent flame retardant and preparation method

The invention belongs to the field of flame retardant materials, and particularly relates to a composite flame retardant containing a microcapsule-coated intumescent flame retardant and a preparation method. The composite flame retardant containing the microcapsule-coated intumescent flame retardant consists of the following components in percentage by mass: 60-94 percent of microcapsule intumescent flame retardant, 5-25 percent of flame-retardant synergist, 0.9-10 percent of smoke suppressant and 0.1-5 percent of hindered amine light stabilizer. The preparation method comprises the following steps: preparing the microcapsule-coated intumescent flame retardant; placing the microcapsule-coated intumescent flame retardant, the flame-retardant synergist, the smoke suppressant and the hindered amine light stabilizer into a high-speed mixer for mixing uniformly, and discharging to obtain the composite flame retardant containing the microcapsule-coated intumescent flame retardant. Multiple components in the composite flame retardant can play roles in retarding flame in a synergetic way, so that the flame retardance of a high polymer material is improved remarkably, the production of toxic and harmful smog in a burning process can be suppressed, and the flame retarding efficiency is increased greatly.
Owner:LIAONING TECHNICAL UNIVERSITY

Antibacterial medical catheter and preparation method thereof

The invention relates to an antibacterial medical catheter. The antibacterial medical catheter comprises a catheter body; an antibacterial coating is coated on inner and outer surfaces of the catheter body respectively and comprises an antibacterial agent and high polymer used as an antibacterial agent carrier, wherein the antibacterial agent accounts for 0.05 to 10 percent based on the total mass of the antibacterial coating. The invention also provides a preparation method for the antibacterial medical catheter. The method comprises the following steps of: treating the surface of a medical catheter; preparing a carrier solution; preparing an antibacterial solution, namely adding the antibacterial agent into the carrier solution, and stirring until a mixture is dispersed uniformly to obtain the antibacterial solution; forming a film, namely immersing the medical catheter of which the surface is treated in the antibacterial solution, and then lifting the medical catheter slowly to ensure that the antibacterial solution naturally flows along the surface of the medical catheter to form the uniform and smooth antibacterial coating; and drying. The antibacterial coating containing antibacterial components is deposited on the surface of the medical catheter and can effectively inhibit the growth of bacteria and exert the good antibacterial capacity for a long time.
Owner:RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN

Neutral inorganic composite material for dehydration, solidification and modification of high water content sludge

The invention discloses a neutral inorganic composite material for dehydration, solidification and modification of high water content sludge. The composite material comprises a powdery mixture consisting of the following components in part by weight: 100 parts of water hardened solidifying material consisting of hydrated gypsum and magnesium oxide, 80 to 120 parts of inorganic water absorption ash material, 20 to 40 parts of inorganic substance aid hardened material, 1 to 10 parts of high polymer coagulant and 1 to 5 parts of modifying functional agent. After being treated by the neutral inorganic composite material, the solidified sludge has high compressive strength; the pH of the lixivium is neutral, and meanwhile, harmful substances such as heavy metal and the like in the sludge can be effectively solidified; the treated sludge meets the requirement of landfill soil, soil for earthwork or soil for greening and farmlands; and the neutral inorganic composite material can be widely applied to the dehydration, solidification and modification of the high water content sludge such as sludge from waterworks, dredged bottom mud of rivers and lakes, residual building soil and the like.
Owner:江苏艾特克环境工程有限公司
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