470results about How to "Improve breathability" patented technology

An electronic device including a magnetic body and a wire is provided. The magnetic body has a first magnetic powder and a second magnetic powder mixed with the first magnetic powder. The Vicker's Hardness of the first magnetic powder is greater than that of the second magnetic powder and the mean particle diameter of the first magnetic powder is greater than that of the second magnetic powder.

The present invention comprises methods and devices for thermal treatment of a barrier to increase the permeability of the barrier. One form of increasing the permeability of the barrier comprises forming micropores which may be used for administration of active agents across the barrier, or may be used for sampling or collecting fluids, or may be used for detecting, measuring or determining analytes, or may be used for monitoring of physiological or other conditions. Devices of the present invention may comprise microheaters that are activated by inductive or ohmic heating power supply components.

The present invention provides a passive inhaler for use in treating a number of diseases. The inventor has shown that the compositions comprised in the inhaler can be delivered to the lungs and to the brain in pharmacological relevant dosages, to treat a number of diseases in the lungs and the brain. Further, the inhaler is also able to deliver substances to the brain which may enhance transport across the blood brain barrier.

The invention relates to a coal seam pre-splitting method based on gas extraction, which adopts a 'CO2 gas extraction device' as a tool to blast and pre-split a pre-mined coal seam, so as to increase the crack of the coal seam, drive out gas absorbed on the coal seam and extract the gas. The method particularly comprises the following steps: drilling a hole on the working surface of a pre-mined coal seam, filling CO2 gas extraction device into the drilled hole, sealing the drilled hole, detonating the CO2 gas extraction device, releasing high-pressure CO2 gas for deep-hole impact and pre-splitting of the coal seam, taking out the CO2 gas extraction device, and connecting the drilled hole with a gas extraction system to extract gas. The pre-splitting method of the invention can greatly enhance the permeability of the coal seam, promote the gas dissociation in the coal seam, and improve the underground gas extraction efficiency of the coal mine.

A coated article for providing a phased response to rapid temperature changes, comprises a substrate and a coating disposed on a portion of the substrate. The coating comprises a polymeric material, a first temperature regulating material having a transition temperature between 22° C. and 50° C. and disposed within a first plurality of microcapsules, and a second temperature regulating material having a transition temperature between 25° C. and 45° C. and disposed within a second plurality of microcapsules. The first temperature regulating material and the second temperature regulating material are dispersed in the polymeric material. The coating includes a plurality of regions of discontinuity formed by the coating that create exposed portions of the substrate to provide improved flexibility and air permeability to the coated article and wherein the coating provides a buffered response to rapid temperature changes.

The invention disclose a method for obtaining ultra high batch layer sintering hematite by improving the thickness of iron ore sintering batch layer. The granule part of less than 0.1mm difficult to pelletize in the tradical art are branched off, separate treating to preparing a green pellets of 7-12mm, then adding to the mix processed by more than 0.1mm coarse ironstone, distributing, igniting, induced draft sintering according to the tradical art, cooling, pelletizing to obtain a sintering mine for refined iron for blast furnace. The air permeability of batch layer is improved in case that a great deal of air-channaels is formed between pellets made of fineiron ore and other the mix, accordingly the thichness of sintering batch layer can be 900-1100mm in case that sintering induced draft negative pressure is not increased, and abtain ultra high batch layer sintering hematite.

The invention provides a method for preparing a polyolefin microporous membrane with symmetrical upper and lower surface structures. The method comprises the following steps of: 1) mixing polyolefin resin with a diluting agent in a weight ratio of 1-6:4-9; 2) extruding the mixture by a neck ring mold in an extrusion flow-casting mode and performing cold rolling and strip casting to obtain a thick sheet; 3) preheating the thick sheet and stretching the preheated thick sheet longitudinally and transversely; 4) shaping the stretched thick sheet; 5) extracting the diluting agent and drying the thick sheet; 6) stretching the thick sheet transversely and shaping the stretched thick sheet; and 7) winding the shaped thick sheet. For the polyolefin microporous membrane prepared by the process steps, the upper and lower two surfaces of the thick sheet are particularly provided with a set of rollers with the same diameter respectively, or one side of an air knife is provided with a set of the rollers on a conventional cold roller and an air knife auxiliary patch device to obtain the thick sheet in an auxiliary cooling mode, and then, the thick sheet is stretched and extracted to finally obtain a product with symmetrical and uniform upper and lower surface microporous structures and good ventilation property. Furthermore, warping deformation phenomenon is prevented.

The invention belongs to the fertilizer field and discloses an effect-increasing loss-control agent for fertilizers and a preparation method thereof. The agent is composed of a nitrogen nitrification inhibitor, a biological fermentation compound amino acid, a soil conditioner, an active-layer-shaped phyllosilicate and a compound microelement, wherein the nitrogen nitrification inhibitor can control resolution drain of ammonium nitrogen; the biological fermentation compound amino acid can absorb ammoniacal nitrogen, reduce volatilization loss, and stimulate plant root growth and absorption and utilization of nutrients; the soil conditioner can free soil, increase granular structure of the soil, form a net structure with the active-layer-shaped phyllosilicate through and bridging to reduce fertilizer nutrient loss, absorb and exchange NH4+ and K+, and improve the breathability, water-retaining property and nutrient-retaining property of the soil, therefore the nutrient utilization is improved, the nitrogen loss is reduced, and the effectiveness of the nitrogenous fertilizer is improved. Potted plants and field fertilizer efficiency tests show that the agent can improve the fertilizer nutrient utilization remarkably and increase the volume and income of crops.

The invention relates to a cotton padding, which comprises a cotton padding core, gauze screens and non-woven fabrics. Both upper surface and lower surface of the cotton padding core are provided with a layer of gauze screen and a layer of non-woven fabric in turn; the peripheries of the non-woven fabrics arranged on the upper surface and the lower surface are integrally quilted along the peripheral boundaries of the cotton padding core; the cotton padding core consists of the following components: cotton, hollow fibers, low-melting-point fibers and natural bamboo fibers; and the hollow fibers are at least one of far infrared hollow polyester short fibers, antibacterial polyester hollow fibers, bamboo carbon hollow polyester fibers, three-dimensional crimped hollow fibers and seven-hole polyester fibers. A preparation method comprises the following steps of: mixing, opening, combing, processing by using a random roller, paving, compacting, processing at a constant temperature, shaping, laying a net, rubbing, and reshaping. The components are reasonably proportioned, the processing technology is simple, and the prepared cotton padding has the characteristics of no caking, bacteria resistance and inhibition, health care, moisture absorption and air permeability, and is soft and fluffy and suitable for industrial production.

The invention relates to an undergrowth cultivation medium and cultivation method for anoectochilus formosanus. The undergrowth cultivation method for the anoectochilus formosanus comprises the steps of (1) selecting a forest environment with a natural shading degree of 60-90% and illumination intensity of 2000-5000lux to serve as a cultivation place of the anoectochilus formosanus; (2) forming shallow holes in the cultivation substrate in a scratched mode, inserting the root of each anoectochilus formosanus seedling into each shallow hole, covering each root, and watering rooting water; (3) adjusting air humidity to be 75-90%, adjusting the temperature to be 15-30DEG C; (4) forming the cultivation medium, wherein the cultivation medium mainly comprises 8-23 parts of wood chip smashed objects, 8-25 parts of differentiated yellow loam and 65-80 parts of under-forest humus soil in a mixing mode; and (5) carrying out spraying watering when the surface of the cultivation medium whites after planting, and stopping watering when the cultivation medium is thoroughly watered every time. According to the undergrowth cultivation medium and cultivation method for the anoectochilus formosanus, due to the facts that the forest environment which is in natural growth and has the appropriate shading effect serves as the cultivation base, and the high-quality and high-efficiency cultivation medium is selected, growth of the anoectochilus formosanus is facilitated, the yield, the survival rate and the drying rate of the anoectochilus formosanus can be remarkably improved, operation is convenient, and production cost is low.

The invention discloses a method for increasing the permeability of a low-permeability coal seam by means of deep-hole directional pre-splitting blasting. The method includes constructing large-diameter blast holes in the high-gassy low-permeability coal seam in a conventional operation mode; using four-way perpendicular joint-cutting pipes as blasting explosive charging pipes and water bag charging pipes; arranging the four-way perpendicular joint-cutting pipes loaded with explosive cartridges and the four-way perpendicular joint-cutting pipes loaded with water bags at intervals to fill explosive into the blast holes, and detonating the explosive in each blast hole by double detonating fuses to complete operation for increasing the permeability of the low-permeability thick coal seam. Longitudinal cut joints are respectively circumferentially formed at a 0-degree position, a 90-degree position, a 180-degree position and a 270-degree position of each four-way perpendicular joint-cutting pipe. The method has the advantages that crack networks which are communicated with one another can be formed in the coal seam after blasting, the permeability of the low-permeability high-gassy coal seam can be improved, a gas extraction effect is guaranteed, the gas extraction efficiency is high, and gas disaster accidents can be prevented to a certain degree.

The invention mainly discloses a novel ventilated slow-resilience sponge, in particular relates to a ventilated slow-resilience sponge which ensures the aperture ratio of a product by adjusting raw materials and the proportioning of a product, so that the aperture ratio of the product is improved to over 95 percent without using a pore-forming agent or pore-forming silicone oil, and the ventilation property of the product is improved. When the ventilated slow-resilience sponge is used, a human body contacts the product and obviously feels that the product is floppy; and the product is more comfortable after being used for a long time, particularly in muggy summer.

The invention relates to a coal seam gas fracturing and mash gas driving method, which comprises two stages including a hole sealing fracturing stage and a mash gas driving stage. According to the method, firstly, hole drilling construction is performed in a coal seam; then, a high-pressure rubber pipe is embedded in a drilling hole, and hole sealing is performed; any one drilling hole is selected as a fracturing drilling hole; high-pressure gas is injected into the fracturing drilling hole; the coal seam is fractured through gas pressure energy; the gas permeability of the coal seam is improved; and other drilling holes around the fracturing drilling hole are subjected to mash gas extraction when the high-pressure gas is injected into the fracturing drilling hole. Under the condition of non-ideal gas fracturing effects caused by high coal hardness or great ground stress and the like, high-pressure water can be firstly used for fracturing, and then, high-pressure gas is introduced into the hole; and meanwhile, the drilling holes around the fracturing drilling hole are subjected to mash gas extraction. The method has the advantages that the adsorption performance differences of coal bodies on the mash gas and the fracturing gas are considered; the gas fracturing effect is combined with the mash gas driving effect; the mash gas extraction efficiency can be effectively improved; the number of mash gas extraction holes is reduced; and the inhibiting effect of water on mash gas deabsorption is reduced. The method is simple; safety and reliability are realized; and the effect is good.

The present invention provides an asymmetric porous PTFE membrane for a filter having little change over time and conventionally known properties of a porous PTFE molded article such as water permeability resistance, air permeability, sealing properties and electric properties, in which collection efficiency, air permeability and pressure loss are improved. Specifically, the present invention relates to an asymmetric porous PTFE membrane for a filter comprising a dense skin layer and a continuously foamed porous layer, wherein

• (1) the contact angle of water to the surface of the skin layer is 120 to 140°; and
• (2) the diffuse reflectance of light is 91 to 94%.

The invention discloses an automobile aluminium wheel hub powdery paint suitable for bonding counterbalances, mainly comprising polyester resin, epoxy resin and surfactant. The paint disclosed herein forms a coating which has good ventilation effect on the automobile aluminium wheel hub with large thermal capacity, excellent performance of bonding counterbalances, and can effectively solve the problem that counterbalances are easily detached. The invention further discloses a preparation method of the powdery paint.

The invention relates to a method for implementing super-hydrophobic modification on a polypropylene hollow fiber membrane material, in particular to a method for preparing a lasting super-hydrophobic modified polypropylene hollow fiber membrane. The method comprises the following steps of: respectively dissolving fluorine ester containing unsaturated double bonds, acrylate containing a long alkyl chain, dithiol and a photo-initiator into an acetone solution to prepare a modification solution, soaking a polypropylene membrane treated by normal pressure plasmas into the modification solution, performing ultraviolet irradiation, washing, airing, and thus obtaining a fluorine-containing and long alkyl chain grafted modified polypropylene membrane material. A uniform, lasting and stable super-hydrophobic layer containing fluothane and the long alkyl chain is formed on the surface of the polypropylene membrane material, so that the hydrophobic polymer membrane is endowed with excellent super-hydrophobic property, high water pressure resistance and high air permeability; and the method is simple, good in treatment effect and low in cost, does not produce environment pollution, and is efficient and energy-saving.

The invention provides a sludge carbon fertilizer and a production method thereof, solving the problem of serious environmental pollution caused by the traditional sludge treatment method and incapability of effectively recycling resources contained in sludge. The sludge carbon fertilizer comprises biomass wastes and organic sludge, wherein the mass mixing ration of the biomass wastes to the organic sludge is 1:5-1:1. The invention also provides the production method of the sludge carbon fertilizer, comprising the following steps of: mixing; dryly granulating; carbonizing; cooling; sieving; naturally cooling; and packaging to obtain the sludge carbon fertilizer. Due to the sludge carbon fertilizer produced by adopting the method, the problem of environmental pollution brought about by thetraditional sludge treatment method is solved, and the soil nutrient elements such as organic matters, nitrogen, phosphorus, potassium, and the like which are contained in the sludge can be sufficiently recycled, thus the sludge carbon fertilizer can be used as a soil conditioner and a fertilizer slow-release synergist.

The invention discloses a full-crown transplantation and growing method for waxberry trees, which transplants and grows waxberry trees in autumn or spring and includes root cutting, digging, transportation, transplantation, nursing, root promotion and nematode control. When the full-crown transplantation and growing method is utilized to carry out full-crown transplantation for waxberry trees, each detail of waxberry tree transplantation is safeguarded by corresponding methods and measures, consequently, the growing period is effectively shortened, and moreover, the survival rate of transplantation is ensured. The survival rate of the waxberry trees grown with the full-crown transplantation and growing method reaches 95 percent, and the growing period of the waxberry trees is shortened from two years to half a year.

The invention provides a composite material which comprises raw materials of hot melting bonding fibers and bonded fibers. The composite material can meet the requirements on shock resistance, air permeability, weight and shaping performance of a sports protective tool. The invention also provides the sports protective tool made of the composite material by mould pressing and a preparation method of the sports protective tool. The sports protective tool has air permeability, thereby overcoming the defects of poor air permeability, poor environmental protection and unable considerations of both impact absorption and impact diffusion.

The invention discloses an antibacterial-type nanofiber-based preservative film and a preparation method thereof. The novel antibacterial-type nanofiber-based preservative film which has the excellent mechanical property, can be completely degraded and completely meets the physical performance requirements of preservative films is prepared by taking micro-fibrillated nanocellulose (MFC) and chitosan as raw materials; the preservative film is prepared mainly through the step that ultrasonic blending is performed on the micro-fibrillated nanocellulose (MFC) and an aqueous acetic acid solution of chitosan under the appropriate proportion condition. Compared with a food preservation material on the market, the antibacterial-type nanofiber-based preservative film has the advantages that the production technology is simple, and the preparation cost is low; the preservative film also has the advantages of being efficient, antibacterial, high in air permeability, transparency, bonding property, skin film flexibility and wear resistance and the like, is a new-generation green and environment-friendly type preservative film for replacing an existing plastic preservative film, can serve as a material for packaging food and has the wide application prospect in the field of food packaging films.

Waterproof, breathable socks, booties, shoe inserts, and footwear assemblies containing the shoe inserts are provided. The booties and shoe inserts include a laminate of a seamless ePTFE membrane and at least one textile. The bootie is conformable over a range of sizes and shoe shapes, and may be shaped to fit numerous sizes and shapes of asymmetrical shoe lasts. The bootie may shrink to fit, or, alternatively, be stretched to fit, an asymmetrical last having a desired size to form a shoe insert. Such a conformable bootie eliminates the need to have multiple sizes of shoe inserts correlating to particular shoe sizes. In embodiments where the ePTFE is seamless and continuous, the shoe insert eliminates the need for a waterproof seam tape, which is conventionally used to make shoe inserts waterproof. Methods of forming the socks, booties, and shoe inserts are also provided.

The invention provides an orthosis manufacturing method with a macroscopic-microcosmic integration feature. A diseased part is scanned with three-dimensional equipment to acquire surface profile data of the diseased part, a three-dimensional model of the diseased part is rebuilt, then a digital entity model of orthosis is generated, the macroscopic morphology of the orthosis is designed and optimized, the target gap morphology is determined according to the conditions such as the variety, the breathability requirement and the weight of the orthosis, and then the orthosis with a plurality of gaps which are arranged transversally and longitudinally and mutually communicated is generated on the basis of the macroscopic morphology of the orthosis. The orthosis manufactured through the method has the optimized macroscopic morphology and microcosmic gap structure, is good in breathability and small in weight and has the individuality, the aesthetics and the reasonability, the orthosis entity is directly printed through a three-dimensional printing technique, the manufacturing efficiency is high, and manufacturing is more excellent; meanwhile, the orthosis is beneficial for early recovery of a patient by adding medicine for promoting recovery and orthosis and a lubricating agent for improving contact face friction in the microcosmic gaps.

The invention provides molding sand for an automatic production line. The molding sand is prepared from the following raw materials in parts by weight: 60-70 parts of returned sand, 180-190 parts of fresh sand, 40-50 parts of pottery clay, 30-40 parts of pulverized coal, 40-45 parts of sodium bentonite, 20-30 parts of calcium bentonite, 4-6 parts of sodium borate, 2-4 parts of aluminum oxide, 2-4 parts of calcium oxide, 14-18 parts of flour, 20-25 parts of iron ore concentrate powder, 20-40 parts of clay, 5-8 parts of foot oil, 2-3 parts of soybean oil and a proper amount of water. The molding sand prepared by carrying out high-temperature calcination on the sand, the fresh sand, the pottery clay and the like in combination with the dispersion and grinding of the foot oil and the like has excellent air permeability, smoothness, mobility, toughness and plasticity. Meanwhile, by using the pulverized coal, the casting burnt-on sand phenomenon is reduced, and the brightness of castings is greatly improved. Compared with conventional molding sand, the molding sand has the advantages that the using amount of the pulverized coal is reduced; and the collapsibility of the molding sand is improved by using the flour and the iron ore concentrate powder. The molding sand has strong mobility, good air permeability and relatively high viscosity and is suitable for automatic molding line production.

The invention provides a paper filter material containing polyester fibers for a cigarette filter tip and a preparation method thereof. The paper filter material comprises 10-90% of polyester fibers and the balance of wood pulp fibers or non-wood pulp fibers and also comprises a functional additive accounting for 0.1-5wt% of the polyester fibers and a coating material accounting for 0.1-5wt% of the paper filter material, wherein the polyester fibers are polyethylene terephthalate fibers or polylactic acid fibers or poly(beta-hydroxybutyrate) (beta-PHB) fibers or poly(butylenesuccinate) fibers; the wood pulp fibers are neddle wood pulp fibers or/and hardwood pulp fibers; the functional additive is water-soluble polymer material or polypeptide, and the polypeptide is plant polypeptide or animal polypeptide. The preparation method comprises the following steps: adding the functional additive into the polyester fibers, and jordaning to obtain a polyester fiber slurry; then respectively blending the polyester fiber slurry with the respectively prepared non-wood pulp fiber slurry or wood pulp fiber slurry in a blending tank; utilizing a paper making machine to make paper with pulp and shape, dehydrating and performing primary drying to obtain dry paper; coating the coating material accounting for 0.1-5wt% of the dry paper onto the surface of the paper; and performing secondary drying, thus obtaining the paper filter material provided by the invention. According to the invention, the range of available fiber raw materials for making the paper filter material is enlarged, the paper performance is improved, and the influence of the paper filter material on the smoking quality of cigarettes can be reduced.

The invention discloses a porous concrete prepared from a waste road concrete aggregate and a preparation process, belonging to the technical field of concrete. The porous concrete specifically comprises the following components in parts by mass: 1000-1200 parts of a recycled aggregate, 500-600 parts of steel slag, 250-300 parts of cement, 2-6 parts of polypropylene film-broken fibers, 100-200 parts of sand, 150-200 parts of water and 2-6 parts of an additive, wherein the additive consists of 10-15 parts of a high-efficiency water reducing agent, 10-15 parts of bentonite, 10-15 parts of natural rubber latex, 10-15 parts of fine iron powder and 10-15 parts of an organic flocculating agent. The porous concrete prepared by the process disclosed by the invention not only meets the national requirements but also meets the requirements of plant growth, and can be widely applied to two sides of a road for protecting the road as well as afforesting the environment, so the porous concrete has a great significance.

The invention provides a raw bamboo fiber automobile air conditioner filter element and a preparation method thereof. The filter element is composed of at least two layers of raw bamboo fiber and polypropylene fiber thin needled mats through needling and hot-rolling adhesion; the mass mixing ratios of the raw bamboo fiber to the polypropylene fiber in each thin needled mat are different; the fineness of the raw bamboo fiber is 3-5tex, and the length is 30-35mm; the fineness of the polypropylene fiber is 3-7 deniers, and the length is 30-40mm; and the volume density of each thin needled mat is 0.1-0.2g/cm<3>, and the gram weight is 70-150g/m<2>. Through the invention, the uniform state of transfer and distribution of each component fiber in the thin needled mat can be improved, the independent filtering performance of each thin needled mat is guaranteed, the production cost can be lowered, and the air permeability and filtering efficiency of the filter element are improved.

The present invention is aimed to provide a shoe sole partly made of PU. The object is realized by a shoe sole having a woven surface layer attached to the surface of an EVA based base layer; a shaped hole formed through the base layer, a PU based air permeable portion filled in the shaped hole; the surface layer and PU based air permeable portion are glued together with the EVA based base layer integrally as a whole. An air permeable portion is mainly located at the middle portion to improve the air permeability thereof. The foot of the user can keep dry and more comfortable by improved air permeable portions. The present invention also has stable structure, prolonged lifetime without deformation by partly adopted PU material. It is beneficiary and advantageous for manufacturers adopting the present invention to guarantee the quality of shoe products.

The process of preparing transfer film of blended collagen and carboxymethyl cellulose includes the following steps: the first preparing collagen with waste chromium bits, alkaline compound, industrial pancreatin and water through mixing, separating and concentrating; the subsequent mixing the collagen, carboxymethyl cellulose, glycerin and cross-linking agent via stirring and regulating the pH value to 3.5-8.5; preparing blend film through flow casting and vacuum drying; and soaking the blend film in water solution of glycerin and vacuum drying. The present invention can utilize tanning waste resource, and the prepared blended transfer film has excellent flexibility, high air permeability, high water vapor permeability, easy degrading and other advantages.

The invention discloses a production method of a square porous zoological environmental-friendly sterilized nutrition pot. The technical scheme of the invention has the following key points: the production method comprises the following steps of uniformly stirring and mixing the zoological environmental-friendly nutrition soil, cement and biogas slurry, subsequently feeding into a block molding machine to be compressed to a semi-finished product of the square porous zoological environmental-friendly sterilized nutrition pot, after being dried naturally, feeding the semi-finished product into a low temperature kiln to be sterilized and disinfected, and cooling and subsequently packaging into a finished product of the square porous zoological environmental-friendly sterilized nutrition pot.The square porous zoological environmental-friendly sterilized nutrition pot is provided with 4-64 grooves, so that the utilization rate of the nutrition pot is increased greatly, the working intensity of workers is reduced, and the enterprise benefits are increased. By adjusting the production formula, a nutrition pot which can be degraded into common soil within 1-5 years can be produced, so that the nutrition pot is low-carbon, environmental-friendly and pollution-free, and is a high quality environmental-friendly sterilized nutrition pot which is complete in nutrition ingredient, high in fertilization effect, non-toxic, harmless and odorless, and thus the method is applicable for producing square porous zoological environment-friendly sterilized nutrition pots.

The invention provides a shoe sole provided with a support sheet. The shoe sole is characterized by comprising a middle sole, an undersole and a support chip, wherein the support chip is positioned between the middle sole and the undersole, is used for stabilizing, is arranged along the longitudinal central axis of the lower surface of the middle sole, and extends from the front part of a foot sole to the middle part of a heel. In the shoe sole, the support chip which passes through a foot sole, a foot arch and the heel is arranged in a specific region, so that the entire shoe sole is limitedin an easiest and most centralized way, high flexural stability and air permeability are achieved, and the shoe sole is more comfortable for wearing; and moreover, the shoe sole has the advantages ofsimple manufacturing process, high production efficiency and low cost.