435results about How to "Porous" patented technology

The invention relates to a biomass magnetic carbon material for degrading organic dye. The material is prepared by mixing a biological raw material and an iron precursor at a ratio of (2-20kg):1kg. Meanwhile, the invention also discloses a preparation method of the biomass magnetic carbon material. The biomass magnetic carbon material provided by the invention is cheap and efficient and has double effects of adsorption catalysis and degradation; serving as an efficient catalyst in a process of constructing a Fenton-like system for treating high-concentration wastewater, the biomass magnetic carbon material has high catalytic activity in thoroughly oxidizing and degrading organic dye; the degradation effect is better than that of a ferrous ion homogeneous catalysis reaction and a Fenton-like reaction taking ferroferric oxide as a catalyst.

A inorganic dry powder paint with good mass sensation is prepared proportionally from cement, color sand, re-dispersed emulsoid powder, hydrophobic agent, inorganic pigment and filler. Its advantages are high adhesion to concrete, high weatherability, good air permeability, and no pollution. Its application method is also disclosed.

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 relates to a synchronous nitrogen and phosphorus-removal domestic sewage treatment process of an integral bio-enhancement activated carbon dynamic membrane. The solid-liquid separation effluent process is completed by a dynamic membrane module. The domestic sewage treatment process comprises the following steps: pumping sewage into a bio-enhancement activated carbon dynamic membrane device, and carrying out biodegradation and removal on pollutants by utilizing a bio-enhancement activated carbon mixed liquor in the device; forming a dynamic membrane on the surface of the dynamic membrane module by the bio-enhancement activated carbon to carry out the solid-liquid separation of the mixed liquor; stirring raw water by a stirrer and sufficiently mixing the raw water with microorganisms in the reaction device of the bio-enhancement activated carbon dynamic membrane assembly, staying for a period of time and then filtering and discharging water through the dynamic membrane, wherein dissolved oxygen in the mixed liquor is provided by the aeration of an air blower. The invention has simple process and can realize a synchronous nitrification-denitrification nitrogen removal process and a nitrification phosphorus removal process; the structure of the adopted dynamic membrane assembly is stainless steel silk screen and the like, and therefore, the domestic sewage treatment process has low cost and simple control; and the domestic sewage treatment process can rapidly and effectively remove substances in the water, such as organic matter, SS (suspended substances), nitrogen, phosphorus and the like under the condition of low temperature; the hydraulic retention time is short, and thereby, the volume of reaction structures is effectively reduced.

The invention discloses a multifunctional gypsum painting ready mixed mortar as well as a preparation method and application thereof. The multifunctional gypsum painting ready mixed mortar comprises the following components: beta-semi-hydrated gypsum, heavy calcium carbonate, calcium hydroxide, quartz sand, methyl cellulose ether, adhesive, a phase-change material, modified starch, a dispersant, a gypsum shrinking resistant agent, lightweight calcium carbonate, barite powder, talcum powder, tourmaline powder and kieselguhr. The materials, such as kieselguhr, tourmaline, the barite powder, thephase-change material, and the like, are reaonsbaly used in the multifunctional gypsum painting ready mixed mortar; and it is proved that the multifunctional gypsum painting ready mixed mortar has various functions of automatic adjustment of indoor temperature and humidity, radiation resistance, bacterium resistance, air purification, and the like. In addition, the gypsum painting ready mixed mortar has higher anion generating amount and far infrared emissivity, can rapidly exhaust odor generated by products, such as paint, colloid, and the like and can exhaust smoke for a long term.

The invention relates to a nitrogen-doped porous graphene and a preparation method thereof. The preparation method comprises the following steps: heating a mixture of a nitrogen source and organic salts or organic acids and salts to 400-1600 DEG C under non-oxidizing atmosphere, to obtain a nitrogen-doped porous graphene and metal oxide mixture; removing the metal oxide in the mixture to obtain the nitrogen-doped porous graphene. The in-situ nitrogen-doped porous graphene having the advantages of being porous, large in specific surface area and the like can be prepared by heating the mixture of nitrogen source and organic salts or organic acids and salts under non-oxidizing atmosphere through utilizing the conception that organic salts are utilized to carbonize graphene, inorganic oxide is nucleated and a nitrogen source is pyrolyzed to generate activated nitrogen. The preparation method is simple in technology, free from needing special equipment, free from non-involving dangerous chemical products, short in production period and capable of doping nitrogen in situ. The prepared nitrogen-doped porous graphene can be applied in the fields of electric catalysis, a fuel battery catalyst, super capacitors, lithium ion batteries and the like.

The invention discloses a method for preparing a sound absorption and heat insulation material and a product thereof. The method adopts the following process: firstly, combing PET (polyester) fibers into an ordered PET fiber flow, wherein the titre of the PET fiber is 1.1-28dtex, and the fiber length is 30-100mm; secondly, slicing, fusing and spinning PBT (Polybutylece Terephthalate) to form a PBT superfine melt-blown fiber flow, wherein the fusion temperature of PBT is 290-320 DEG C, the temperature of high speed hot air flow is 280-330 DEG C, the titre of PBT superfine melt-blown fiber is 0.5-5 mu m, and the averagetitre is 2-3mum; and thirdly, mixing the PET fiber flow with the PBT superfine melt-blown fiber flow, then condensing to form a net on a net formation curtain, and adhering the fibers with each other for reinforcing and forming by using waste heat of the PBT superfine melt-blown fibers to form the sound absorption and heat insulation material, wherein the mixed mass ratio of the PET combing fiber flow to the PBT superfine melt-blown fiber flow is 35:65-85:15.

The invention belongs to the field of nanometer material and technology, and particularly relates to a graphene/polypyrrole hybrid aerogel and a preparation method thereof. The graphene/polypyrrole hybrid aerogel is characterized in that the hybrid aerogel takes graphene oxide (GO) which is conveniently prepared and polypyrrole nanotube (PNT) as starting raw materials, and is prepared through steps of carrying out freeze drying on GO/PNT mixed liquor and carrying out heat treatment on the GO/PNT aerogel at high temperature. The preparation method is simple and easy to operate, the raw materials are cheap and available, and the aerogel is easy to prepare in large scale, has the characteristics of porosity and high conductivity, and has wide application value in the fields of supercapacitor electrode and oil-water separation.

The invention discloses scald and burn dressing prepared by a coaxial electrostatic spinning method. The scald and burn dressing is a nanofiber membrane with a core/shell structure, wherein the shell is made of a natural biological high molecular material and the core is a degradable synthetic high molecular material loaded with astragaloside. The mass ratio of astragaloside to the degradable synthetic high molecular material is 1:(2-50). The invention further discloses a preparation method of the scald and burn dressing. The raw materials are easy to get and cheap, and the preparation process is simple, easy to operate and control and can be easily put into large-scale industrial production. The prepared scald and burn dressing has good flexibility and high mechanical strength, and can form a protective fiber felt on the surface of the wound to promote growth of normal skin tissues and reduce formation of scar tissues, thereby curing skin injury.

The invention relates to a method for preparing microencapsulation glucose oxidase, which belongs to the technical field of food processing. The invention aims at improving the quality of flour to researche a method for preparing new flour modifying agent, namely, the microencapsulation glucose oxidase, chitose-calcium alginate-glucose oxidase microcapsule which is obtained through the method is copolymer hydrogel which is obtained through double cross-linking, both amidogen and carboxyl group are fixed, and the whole system is a reticular formation. The method controls the catalytic speed of the microencapsulation glucose oxidase through adjusting the molecular weight and the degree of deacetylation of microcapsule exine chitose, thereby the method is beneficial for oxidation-linking of gluten protein and for increasing the quality of the flour and flour products, simultaneously, the glucose oxidase after microencapsulation avoids the contact between enzyme and the flour and improves storage and the stability, and the microencapsulation glucose oxidase is excellent flour modifying agent and accords with practical production and application. The process of the method is simple, safe and convenient, and accords with the requirements of environmental protection and utility.

The invention relates to a device for rapidly culturing biological films in natural water body, which consists of a disc carrier and an active carbon fiber fixing disc, wherein the disc carrier comprises discs (1), a fixed column (2), a rope penetrating hole (3) and a connecting hole (4); an active carbon fiber fixing device comprises a ring-shaped gasket (5), a fixed hole (6) and active carbon fiber (7); the active carbon fiber fixing disc is fixed on the disc carrier by a fixing rope (8) through the rope penetrating hole (3); and the discs are connected with each other by the fixing rope (8) through a connecting hole (4). The device is mainly used for rapidly culturing the biological films in natural water body in batches. The device can be used for culturing the biological films which are even and close to the natural condition, have high quality, and are used for ecological monitoring, can shortens the cultivation time to be more than 20 days, and can culture the biological films at the different depths in the water body at the same time.

The invention relates to a nano porous metal/conducting polymer composite material and a preparation thereof, belonging to the technical field of conducting polymer composite materials. The nano porous metal/conducting polymer composite material is characterized by comprising nano porous metal and a conducting polymer layer with the thickness of 1 nm-100 Mum; and after the conducting polymer layer is deposited, the three-dimensional continuous pore wall surface of nano porous metal is evenly covered. The nano porous metal/conducting polymer composite material does not need an adhesive; conducting polymer is directly and electrically polymerized on the nano porous metal pore wall prepared by the dealloying method; high conductivity of nano porous metal, relatively high activity specific surface area, and performance of conducting polymer are integrated, thereby further improving the high conductivity and activity specific surface area of conducting polymer, and improving the use efficiencies of conducting polymer in aspects of chemical catalysis and preparation sensors, storers, super capacitors and the like.

The invention relates to the field of function finishing of the fabrics, in particular to a method for preparing polyurethane skin-protecting micro-capsule. The method comprises the following steps: mixing the oil-soluble skin-protecting substance and fatty group or aromatic vulcabond according to the ratio of 1-3:1, and adding the mixture into water solution containing an emulsifying agent at the rotation speed of 1000-10000rpm, emulsifying until the solution becomes an even emulsified disperse system, then adding the poly-diatomic alcohol and catalyzer slowly, stirring for 20-40 minutes at the temperature of 0-30 DEG C, then heating to 60-90 DEG C, and adding 1-5ml chain-extension agent and keeping for 0.5-2 hours to obtain the micro-capsule solution. The synthetic method adopted by the invention does not use any organic solvent. The invention leads the fabrics to have functions of nourishing and moistening as the cosmetics. Furthermore, the raw materials are easy to acquire, the utilization rate is high, the reaction conditions are easy to satisfy and the operation is simple.

The invention provides a topology optimization forming method of arbitrary Poisson's ratio metamaterial, which comprises the following steps: step 1, dividing a functional unit design area in the metamaterial; 2, divide that functional basic element design region into finite element meshes and input the initial conditions of the optimization problem; 3, carry out finite element analysis and calculation on that functional design area to obtain the mechanical performance parameters of the finite element and the node; 4, establish a mathematical model of a metamaterial topology optimization design problem based on that mechanical property parameter of a finite element and a node; 5, solving a mathematical model of that topology optimization problem to obtain a topology optimization result; 6,extract that configuration of the topology optimization result for verification analysis; Step 7: Periodically repeat the ordering of the optimal configurations of the functional units to form the metamaterials. The invention can directly design a new configuration metamaterial with a specified Poisson's ratio value without specifying the geometrical topology configuration of the initial functional unit.

The invention discloses a method for preparing a novel solid acid catalyst. The method adopts porous high temperature-resistance media as carriers and includes adding soluble sugar or starch solution; evaporating to dryness for a plurality of times; igniting; washing in water; drying; reacting with concentrated sulfuric acid; washing until a neutral condition with hot water; filtering; and drying to obtain the novel solid acid catalyst. The obtained solid acid catalyst is linked with sulfonic groups and loaded on the porous high temperature-resistance medium based on hydrophobic amorphous carbon structure prepared by calcining different glycosyl groups, and has the advantages of porosity, large specific surface area, even particle size and easy separation and filling into a tubular reactor. The catalyst has an activity higher than the conventional solid acid catalyst which can be reutilized and easily recovered and is an excellent catalyst for preparing biodiesel oil from waste edible oil such as trench oil and acidification oil.

The invention relates to a preparation method of a lithium battery diaphragm. The method comprises the following steps: 1, dissolving an organic polymer in an organic solvent to obtain an organic polymer solution; 2, adding an inorganic material to the organic polymer solution obtained in step 1, uniformly mixing, heating, and carrying out ball milling to obtain a mixture; and 3, casting the mixture obtained in step 2 on a substrate, and drying to obtain the final product inorganic/organic composite diaphragm. The method has the advantages of simple steps and low cost, and the prepared diaphragm has the advantages of porousness, flexibility, mechanical strength, good stability, good uniformity, and good heat resistance, has a good popularization prospect, and can be applied to the lithium ion battery field.

The invention relates to a transition metal oxide/binary carbon network positive electrode composite material and an aluminum-ion battery. Preparation of the positive electrode composite material comprises the steps of (1) adding a catalyst and a citric acid to water for mixing to obtain a catalyst precursor solution; (2) soaking a transition metal oxide into the catalyst precursor solution and carrying out separating and drying to obtain a transition metal oxide/catalyst precursor composite material; and (3) preparing a transition metal oxide/carbon nanotube composite material through chemical vapor deposition, soaking the transition metal oxide/carbon nanotube composite material into a graphene oxide dispersion liquid, carrying out separating and drying to obtain the transition metal oxide/carbon nanotube/graphene oxide composite material and then carrying out reductive heat treatment to obtain the transition metal oxide/binary carbon network positive electrode composite material. According to the positive electrode composite material provided by the invention, a binary carbon network coats the surface of the transition metal oxide, so that the conductivity and the structure stability of the positive electrode material are improved; the cycle performance of the electrode material is improved; and the transition metal oxide/binary carbon network positive electrode composite material can be applied to preparation of the high-performance aluminum-ion battery.