175results about How to "Fluffy structure" patented technology

The invention relates to an electrospinning nano-fiber electret filtering material and its preparation method. The high-efficiency and low-resistsance nano-fiber electret filtering material having no interfibrous adhesion and having a fluffy three-dimensional netted intercommunication structure is prepared through controlling the component and the temperatures of a polymer solution in an electrospinning process and carrying out one-step forming in the nano-fiber forming rapid cooling process, wherein the gram weight of the above nanofiber layer is 0.01-70g/m<2>, and the porosity is not less than 80%. The surface electrostatic potential of the nano-fiber electret filtering material is 800-6000V, and the surface charges have lasting storage stability, the hydrophobic angle is greater than 150DEG, the filtering efficiency of the material to particles of 0.006-1[mu]m can reach above 99.999%, the piezoresistance is less than 20Pa, and the dust containing capacity is 300-3600g/m<2>. The preparation method is simple, and the filtering material has wide application prospects in the fields of individual protection mouth mask filtration, indoor air purification and filtration, and high efficiency/ultrahigh efficiency air filtration.

The invention relates to a saline-sodic land reclamation and control method. Wide and deep research is long developed on the reclamation of saline-sodic land at home and abroad, and more focuses on engineering measures than applies biological techniques; although achievement has been made, some insurmountable difficulties still exist. The saline-sodic land reclamation and control method comprises the following steps: bulk deep loosening, applying soil deep loosening agents and saline-sodic soil improvement agents to deep loosening soil, purposefully and proportionally applying biologically organic fertilizer according to the composition of soil detected by adopting a nutrient balance method and a nitrogen phosphorus and potassium proportioning method which both comprise the following steps: subtracting soil nutrient-supplying amount from the fertilizer requirement of target yield, supplementing the balance through fertilizing, hathpace ridge forming, draining water and controlling salt, planting green manure-saline alkali tolerant high-yielding grass crop jerusalem artichoke to thoroughly improve the soil.

The invention relates to two-component superfine fiber material used for heat insulation and sound absorption based on polypropylene superfine fibers and polyester staple fibers and a preparation method thereof, in particular to two-component sound absorption and heat insulation cotton based on the polypropylene superfine fibers and the polyester staple fibers and a preparation method thereof. The material is specially designed for reducing noise power in a high-noise environment, and has the effects of sound absorption and heat insulation particularly in the aspects of automobiles, high speed trains and the like. The material is also suitable for the aspects of pocket-type or plate-and-frame type filters of heating and ventilating systems, household air cleaners and vacuum dust catchers, factory purification and the like. The two-component sound absorption and heat insulation cotton based on the polypropylene superfine fibers and the polyester staple fibers comprises the polypropylene superfine fibers and the polyester staple fibers, wherein the average fineness of the polypropylene superfine fibers is 1-2 micrometers, and the fineness of the polyester staple fibers is 25-35 micrometers. The two-component material formed by mixing of the polypropylene superfine fibers and the polyester staple fibers is processed through electrostatic electrets, and then the two-component sound absorption and heat insulation cotton is formed.

The invention relates to a method for preparing an ecological organic fertilizer from organic waste. The method comprises the following steps of putting the organic waste of which the moisture content is within 95% into a subcritical water reaction kettle, adding biomass which is 0-10% of the organic waste, feeding NaOH to the reaction kettle to adjust the pH to 7.5-8.5; leading steam into the reaction kettle, adjusting the temperature to 150-300 DEG C and the pressure to 0.5-5.0MPa to react for 15-60 minutes; baking or dewatering the product until the moisture content is 50-65%; feeding a microbial agent which is 0.5-1% of weight of the product to the baked or dewatered product; evenly mixing and then piling, heating the pile to 60-70 DEG C after 2-3 days to be stable, and carrying out heat preservation at 55-65 DEG C to maintain for 5-7 days, and turning when the temperature exceeds 65 DEG C and preparing the product until the temperature is not changed. By adopting the method, the limitation of the traditional aerobic fermentation is broken through; pathogene can be thoroughly killed; no bad smell or heavy metal pollution appears; the treatment cost is reduced; the treatment efficiency is improved; and the highest target of resource utilization of the organic waste is achieved.

The invention provides a preparation process of expanded stem products and belongs to the technical field of tobaccos. The preparation process comprises the following steps of: removing impurities such as metal, hemp ropes, stem heads and stem picks in tobacco stems; expanding the tobacco stems by microwave and steam; conveying the expanded tobacco stems into a pressure container to carry out pressure treatment; carrying out moisture regaining on the tobacco stems after pressure treatment and preparing into a certain product form; adopting a soaking mode to wash the stems, then dewatering by a physical mode till the water content is below 70%, and then adding additive feed liquid extracted from the tobaccos; adopting the traditional equipment in the tobacco industry to dry the stem products added with the feed liquid till the water content is 11 to 12%, adopting a flavoring machine to carry out flavoring treatment on the dried stem products, and balancing the water content to 11 to 12%. The preparation process provided by the invention has the advantages that the whole process is simple, the energy consumption is low, the quality of the expanded stem products obtained is close to that of the shredded tobacco product, the filling value is high, and large-scale adding can be achieved, so that the expanded stem product is an excellent tobacco additive.

The invention belongs to the field of textile materials and discloses a micron fiber three-dimensional framework/polymer nanofiber composite filter material and a preparation method thereof. The preparation method comprises the following steps: preparing polymer nanofibers by adopting a melt blending method; dispersing the polymer nanofibers and a crosslinking agent into a solvent to form a suspension, then soaking micron fiber nonwoven fabric skeletons into the suspension, carrying out freeze drying to form coagulation blocks, and then removing the solvent, so that a nonwoven material with polymer nanofiber aerogel gradiently distributed among the micron fiber nonwoven fabric skeletons is obtained. According to the invention, the adopted preparation technology is simple, raw materials are environment-friendly, conditions are mild, the composite filter material is applicable to industrialized mass production, and the composite filter material product has good flexibility as well as high efficiency and low resistance air filtration performance and can be applied to the field of efficient air purification.

The invention discloses a plant filter base material which is prepared by the working procedures of crushing, screening, degreasing, washing, softening, cleaning, puffing and drying a mixture of plant stems and leaves, and the like. According to the filter base material disclosed by the invention, plants are puffed, so that the fiber structure of the plants is fluffy to form a plurality of small gaps, the flow resistance to filter media is reduced, and impurities in filtered substances are effectively intercepted. According to the filter base material, a surface barrier form of a traditional filter material is converted into a volume type echelon filter and deep adsorption form. Additionally, the filter base material disclosed by the invention is in a fluffy structure, so that various additives can be steadily stored in the structures and cell capsules of plant fibers so as to be processed into various gas and liquid filter materials. When the filter media pass through the filter materials, the plant fibers are extruded, so that the additives are slowly released to repair the filter media, and the adverse effect caused by excessive release of the additives can be avoided.

The invention discloses an ecological environment-friendly wood-plastic composite panel for an advertisement board and a preparation method of the panel, belonging to the technical filed of manufacture of wood-plastic composite materials. The panel is of a three-layer composite structure and is composed of outer surface soft layers and a middle hard layer, wherein the hard layer is clamped between the two soft layers which are completely the same; the thickness of the hard layer is 0.5-5mm, and the thickness of each soft layer is 0.25-2.5mm. By taking recycled wastes such as sunflower straws and wood-plastic waste and PVC as basic materials, the ecological environment-friendly wood-plastic composite panel comprising a soft-surface thermoplastic elastomer as the outer surface layer and a hard support as the middle layer is produced, and is a good substitute for an existing advertisement board. The ecological environment-friendly wood-plastic composite panel is environmentally friendly and low-carbon, harmless to environment and a human body, good in water-resisting property, easy in demolding, long in service life, unlikely to deform, smooth in surface, and good in fire resistance and photostability, and also has antibacterial insect-prevention effect, and the dimension of the composite panel can be specified by customers.

The invention discloses an industrial protection non-woven material and a manufacturing method of the industrial protection non-woven material. The industrial protection non-woven material comprises a PP spunbond non-woven fabric layer, an ES-mixed non-woven fabric layer and a PP melt-blown non-woven fabric layer sandwiched between the PP spunbond non-woven fabric layer and the ES-mixed non-woven fabric layer. Fire retardant mixtures of a first component are added to the PP spunbond non-woven fabric layer, and fire retardants of second components of different types are added to the PP melt-blown non-woven fabric layer. Mixed fibers of ES fibers, polyester fibers and viscose fibers are combed into a net to form the ES-mixed non-woven fabric layer. The industrial protection non-woven material has the moisture percentage similar to the moisture percentage of a human body, good gas permeability and soft and fluffy hand feelings, is comfortable to wear, has high tension stress and morphological stability in all directions, protects the structure of the melt-blown non-woven fabric layer and has the good inflaming retarding characteristic and the environment protection effect, and a guarantee is provided for the protection performance of the industrial protection non-woven material.

The invention discloses low-density SiC nanofibers and a preparation method thereof. The density of the SiC nanofibers is about 0.3-0.6g/cubic centimeter (the density of commercialized SiC is about 1.1-1.3g/cubic centimeter), the diameters of the fibers are 100-500 nanometers and the length-diameter is greater than 100. The SiC nanofibers are prepared by adopting an electrospinning technique combined with a high-temperature carbon thermal reduction method, and the obtained SiC nano fibers are uniformly distributed. The SiC nanofibers provided by the invention are simple and feasible in preparation method and low in raw material price, and the structure and the morphology of the fibers are easy to control, so that the preparation method is a synthetic technology which is relatively strong in comprehensiveness and suitable for industrial popularization.

The invention relates to a method for preparing a three-dimensional electrostatic-spinning nonwoven support material and a device thereof. The method comprises the following steps: (1) dissolving a spinning polymer in a mixed solvent of acetone/dimethyl formamide, and obtaining a spinning solution after mixing; (2) pouring the spinning solution into a solution tank, and grounding a receiving roller to apply high-voltage static electricity to the spinning solution for electrostatic spinning; after electrostatic spinning lasting for 5-20 minutes, taking down a fluffy fiber net from the receiving roller, thus obtaining a three-dimensional nonwoven fiber support material; (3) and carrying out vacuum drying on the three-dimensional nonwoven fiber support material for hours, and removing the residual solvent. The device comprises a motor, the solution tank, a spinning turntable, the receiving roller, an electrostatic generator and an infrared heater. The method of the invention is simple and convenient in operation, low in cost and high in yield. The obtained support material with a three-dimensional structure has advantages of fluffy structure, large hole diameter and good biocompatibility, and is beneficial to cells to inwardly grow.

The invention relates to a preparation method of honeyed bulbus fritillariae cirrhosae. The preparation method comprises the following steps: preprocessing bulbus fritillariae cirrhosae, honeying the bulbus fritillariae cirrhosae, steaming the bulbus fritillariae cirrhosae and drying the bulbus fritillariae cirrhosae. The bulbus fritillariae cirrhosae are steamed after being soaked with honey and snow pear juice to bulk the bulbus fritillariae cirrhosae, so that the honey and the snow pear juice for honeying can be effectively sucked completely, the honeying effect can be improved, and the effects of clearing heat, moistening the lung, eliminating phlegm and stopping cough can be enhanced; the honeyed bulbus fritillariae cirrhosae is convenient to take and relatively good in mouth feel and drug effect. The preparation method is simple, the folk traditional drug administration habit of the bulbus fritillariae cirrhosae and the natural nutritional substances of the raw materials are retained, and the advantages of the bulbus fritillariae cirrhosae, the honey and snow pears are fully utilized and complement one another. The honeyed bulbus fritillariae cirrhosae are comprehensive and rich in nutrition, suitable for various people and favorable for popularization and application of the bulbus fritillariae cirrhosae.

The invention discloses a method for improving tobacco stalk quality by combining steam explosion and anaerobic treatment technology. The method comprises the following steps of: performing steam explosion on tobacco stalks by using a steam exploder; placing the exploded tobacco stalks in a sealed container, adding anaerobic microorganisms into the container and forming an anaerobic environment in the container to perform anaerobic treatment by vacuuming or filling the container with an inert gas; taking the tobacco stalks out of an anaerobic treatment container and quickly dehydrating at the low temperature to control water content to be about 20 to 30 percent; and finally slicing the dehydrated tobacco stalks for the production of cigarette. The method can improve the amount of the tobacco stalk added during the production of the cigarette on the premise of not influencing the aesthetic quality of the cigarette, so that the cigarette cost is effectively reduced.

The invention provides a warm-keeping type moisture absorbing and sweat releasing felt fabric with a bionic structure. The fabric is a multi-layer fabric woven by a double warp beam; a warp system in the fabric is separated layer by layer from a bottom layer of the fabric to a top layer of the fabric in the thickness direction of the fabric to form a multi-level bionic structure similar to wool primary fiber; wool warps in the fabric twists on the surface layer of the fabric and forms felt on the surface of the fabric after felt cutting and loosening; the felt is highly controlled; and in one fabric weave circulation, 12 warps are formed and composed of 6 felt warps, 6 body warps and 36 weft yarns. Due to the structure of the fabric disclosed by the invention, the transmission channel of the water from the fabric bottom layer to the fabric top layer is effectively shortened and the moisture guiding efficiency of the fabric is effectively improved; the bionic felt fabric can be produced on a common weaving machine, so that the production cost is saved; the fabric has good elasticity and fluffiness; the felt on the surface of the fabric is full and good in warm-keeping performance; and a moisture guiding channel of the fabric warp system is continuous, so that the moisture comfort of the fabric is good and the fabric is good warm-keeping fabric in winter.

The invention relates to the technical field of soil remediation, in particular to a remediation agent and remediation method for heavy metal contaminated soil. The remediation agent for the heavy metal contaminated soil comprises 2-16 parts of humic acid, 5-10 parts of succinic acid, 5-20 parts of sawdust, 2-10 parts of bentonite, 10-20 parts of sodium polyacrylate, 5-10 parts of honeycomb briquette ash, 5-20 parts of seaweed residues, 2-10 parts of zeolite, 5-10 parts of nano hydrogel, 10-30 parts of charcoal, 10-20 parts of Fe-Mn binary oxide, 5-10 parts of sodium pyrophosphate and 2-10 parts of microorganism mixed bacteria. The remediation agent is good in repairing effect and low in cost. The remediation method for remediating the heavy metal contaminated soil through the remediationagent is simple, heavy metal in the soil can be efficiently solidified, and the water quality grade of the soil penetrating fluid is improved.

The invention discloses an electroplating process of a neodymium-iron-boron magnet. The electroplating process is composed of the following steps that (1) baking is conducted, specifically, the neodymium-iron-boron magnet is placed in a baking oven to be baked; (2) polishing is conducted, specifically, a covering on the surface of the neodymium-iron-boron magnet is removed through rough abrasive paper, and then the surface of the neodymium-iron-boron magnet is polished to be smooth through metallographic abrasive paper; (3) cleaning is conducted, specifically, the surface of the neodymium-iron-boron magnet is scrubbed through alcohol; (4) hole sealing is conducted, specifically, the neodymium-iron-boron magnet is placed in a zinc stearate solution to be dipped; (5) oil removing is conducted, specifically, chemical oil removing is conducted through ultrasonic waves; (6) bright dipping is conducted, specifically, the oil-removed neodymium-iron-boron magnet material is subjected to brightdipping treatment; (7) dip plating is conducted, the magnet material subjected to bright dipping is placed in a dip plating solution to be subjected to dip plating treatment; (8) bright nickel plating is conducted, specifically, the surface of a dip plating layer is plated with bright nickel, and the thickness of a zinc-nickel layer is 5-6 [mu]m; and (9) drying is conducted, specifically, the magnet material is dried in a blown mode through compressed air. The corrosion resistance of the magnet material is improved greatly.

The invention discloses an electrospinning apparatus comprising an AC high-voltage generator, a liquid supplying device including a micro-injection pump, an air supplying device, a spraying head including a liquid supplying channel connected with the liquid supplying device and an annular air supplying channel connected with the air supplying device, and a receiver including at least two rod-like supporting arms, a rotating shaft and a transmission device driving the rotating shaft to rotate. The air supplying channel sleeves the liquid supplying channel; an end part of an outlet section of the liquid supplying channel is provided with a tapered tipped end; the spraying head is connected with the AC high-voltage generator; one end of the supporting arm is fixedly connected with the rotating shaft and the other end is suspended in the air; the adjacent supporting arms are arranged at intervals; all the supporting arms form a bowl type revolving surface during the rotation of the rotating shaft; and the bowl typerevolving surface is opposite to a liquid outlet and an air outlet of the spraying head. Fibers with tiny diameters can be formed by the use of the electrospinning apparatus; the fiber filament diameters are evenly distributed and the fibers have fluffy structure and excellent mechanical properties; backswinging air flows can be avoided; and the electrospinning apparatus can be widely applied to organization engineering field.

The invention discloses a three-dimensional reduced graphene oxide aerogel material and a preparation method thereof. The aerogel material is composed of graphene oxide and reduced graphene oxide, andis black and fluffy sponge-shaped overall. The three-dimensional reduced graphene oxide aerogel generates a large number of micron-sized pores in the forming process of the three-dimensional structure. After the aerogel material provided by the invention is mixed evenly with the paraffin, under the circumstance that the dosage of the aerogel material accounts for 10% of the total mass and the matching thickness is 2.5mm, in a frequency range of 2-18GHz, the reflection loss can reach -8.2dB. At the same time, in the preparation process of the three-dimensional reduced graphene oxide aerogel, ZnO and other metal nanoparticles can be carried in the pores inside the porous reduced graphene oxide, thus realizing compounding and regulation of the electromagnetic properties of the prepared material.