67results about How to "Shrink big" patented technology

A method and device for creating an afferent stimulus for preventing obstructive sleep apnea are disclosed. The device includes at least one electrode and a stimulator, of which at least one electrode stimulates the genioglossus muscle of a patient having obstructive sleep apnea. The electrode is capable of conducting selected electrical stimulation generated by the stimulator, and the system is capable of delivering the selected electrical stimulation during a selected time of day. The electrical stimulation is selected to maintain sufficient muscle tone of the genioglossus muscle to prevent it from obstructing the airway during sleep, preferably at a stimulus intensity low enough to avoid awakening the patient during sleep. A removable mouthpiece having a battery, at least one electrode, and a controller, and optionally a sensor, can be used for providing the stimulation.

The invention discloses a graphene oxide anti-abrasion ultra-high toughness concrete. The concrete comprises the following raw materials in parts by weight: 700 to 800 parts by mass of cement, 150 to200 parts by mass of fly ash microbead, 150 to 200 parts by mass of silica fume, 900 to 1080 parts by mass of machine-made sand, 23 to 50 parts of hydrophilic rubber particle, 160 to 200 parts of hybrid fibers, 34.5 to 37.95 parts of shrinkage and viscosity reducing water reducing agent, 0.005 to 0.01 part of graphene oxide, 46 to 69 parts of composite expansion agent and 207 to 218.5 parts of water; the hybrid fiber is formed by mixing copper plated flat steel fiber, multi-anchor steel fiber and PVA fiber according to the mass ratio of 6-8: 1-2: 1-2. The graphene oxide anti-impact and anti-wear ultra-high toughness concrete prepared by the invention has excellent impact toughness and anti-wear performance, good volume stability and high interface bonding strength between new and old concrete.

The invention discloses a damping sound-insulating spraying mortar. The damping sound-insulating spraying mortar is a bagged damping sound-insulating dry-blend spraying mortar prepared through mixing of an inorganic cementitious material, a filling material, an organic cementitious material and an additive under stirring; and the motor is stirred on site and uniformly sprayed on a base layer by using a spray coater. The motor comprises, by weight, 25 to 35 parts of cement, 5 to 15 parts of fly ash, 25 to 50 parts of fine and light aggregate, 10 to 40 parts of rubber powder, 0.6 to 5 parts of redispersible powder, 0.1 to 0.3 part of methylcellulose ether, 0.02 to 0.1 part of short fiber and 0.01 to 0.1 part of a water reducer. The damping sound-insulating spraying mortar can improve the sound reduction index of a wall and a ceiling when sprayed on the wall and the ceiling, and can replace a leveling layer of a floor and improve the impact sound reduction index of the floor when sprayed on the floor; and the damping sound-insulating spraying mortar can totally cover a variety of special-shape structures to form an effective sound-insulating layer and can be constructed in a variety of complex environments with narrow space.

The invention discloses a porous carbon material and its preparation method. The preparation method provided by the invention successively comprises steps of: raw material and auxiliary material selection, pulverization, spheroidization, grading, burdening, mixing, molding, roasting and the like. Green petroleum coke and green pitch coke are creatively used as raw materials. A filtration materialprepared after spheroidization of a green coke powder has large contractility, high strength, uniform pore distribution, smooth pore path, high filtration precision and good transmissivity, is not easy to block during the purification process, is easy to regenerate, and has long service life. The porous carbon material prepared in the invention can be widely used as a filtration material, a thermal insulation material, a conductance electrode and the like.

The invention discloses an active heat dissipation type box-type substation, and the substation comprises a shell; a plurality of supporting blocks are fixedly connected to the lower end of the shell,and a mounting cavity is formed in the shell; transverse cavities are formed in the upper inner wall and the lower inner wall of the shell, and a vertical cavity is formed in the inner wall of the left side of the shell. A wind energy triggering mechanism comprises a rotating shaft which is horizontally and rotationally connected between the two inner walls of the transverse cavity, and the two ends of the rotating shaft penetrate through the inner walls of the two sides of the transverse cavity respectively, and fan blades are fixedly connected to the two ends of each rotating shaft; and anactive heat dissipation mechanism comprises a folding air bag vertically arranged in the vertical cavity, and first magnetic blocks are fixedly connected to the upper end and the lower end of the folding air bag. The substation dissipates heat through wind energy, does not need to use electric energy, is very convenient to use, can sweep dust on the heat dissipation net while dissipating heat, andavoids the situation that the heat dissipation efficiency is affected by too much dust.

The invention belongs to the technical field of construction materials, and particularly relates to a low-temperature repairing material for a high-speed rail base concrete in a severe cold region and application of the concrete low-temperature repairing material. The low-temperature repairing material comprises the following components: 425 ordinary Portland cement, 425 sulphoaluminate cement, 725 sulphoaluminate cement, a waterproof admixture, rubber powder, an aggregate, a water reducer, a construction improver, a water-retaining agent, an early strength agent, a nano multifunctional water repellent agent, and PP (polypropylene) fiber. The low-temperature repairing material for the high-speed rail base concrete in the severe cold region, provided by the invention, has a repairing construction time meeting a skylight time requirement of a high-speed rail, has compression strength after completion of hydration matching with that of the base concrete, is high in tensile bond strength with the base concrete, is slightly expanded and strong in anti-freezing circulation capability at -40 DEG C, can avoid secondary detachment, and well meets requirements on the low-temperature repairing material for the high-speed rail base concrete in the severe cold region.

The invention discloses a preparation method of a high-temperature-resistant aluminum oxide-silicon oxide aerogel composite material, wherein the preparation method comprises the following steps: (1) sufficiently dispersing and mixing nano aluminum oxide powder, micron aluminum oxide powder, an infrared opacifying agent and short fibers to obtain a mixture A; (2) performing compression molding on the mixture A to obtain an aluminum oxide composite material; (3) uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol; (4) dipping the aluminum oxide composite material by adopting silicon dioxide sol; and (5) performing drying treatment to obtain the high-temperature-resistant aluminum oxide-silicon oxide aerogel composite material. According to the preparation method disclosed by the invention, compounding of aluminum oxide and silicon oxide aerogel is realized through impregnation, a complex preparation process is avoided, the preparation period is shortened, the silicon oxide aerogel is fixed in the aluminum oxide composite material, the compactness of the aluminum oxide composite material is further increased, the composite material has relatively good mechanical properties, and great shrinkage of the aluminum oxide composite material at high temperature is avoided.

The invention relates to a high-light low-haze PE heat shrinkable film and a preparation method thereof. A film layer structure of the PE heat shrinkable film successively comprises a corona layer, afirst sub-outer layer, an intermediate layer, a second sub-outer layer and a heat sealing layer; the corona layer, the intermediate layer and the heat sealing layer separately comprise metallocene polyethylene, linear low-density polyethylene, low-density polyethylene and a processing aid in a mass ratio of (28-32):(8-12):(58-62):(0.1-0.3); and the first sub-outer layer and the second sub-outer layer separately comprise metallocene polyethylene, high-density polyethylene and low-density polyethylene in a mass ratio of (28-32):(28-32):(38-42). The PE heat shrinkable film has high shrinkage rate, powerful shrinkage memory function, large tensile strength, powerful puncture resistance and anisotropic tearing resistance, and has the characteristics of low haze, high transparency and high gloss, the friction coefficient is moderate and stable, thickness uniformity and flatness are good, and printing adaptability is good.

A method of producing an entangled sheet of microfine long fibers using long fibers for forming microfine fibers. The method includes a step of forming a long-fiber web made of long fibers for forming microfine fibers, at least one component of the long fibers being a water-soluble, thermoplastic polyvinyl alcohol resin; a step of entangling the long-fiber web to form a long-fiber entangled sheet; a step of shrinking the long-fiber entangled sheet to form a long-fiber shrunk sheet; and a step of converting the long fibers for forming microfine fibers in the long-fiber shrunk sheet to microfine long fibers, thereby producing the entangled sheet of microfine long fibers. The step of entangling is conducted so as to allow the long-fiber entangled sheet to have an interlaminar peel strength of 2 kg/2.5 cm or more. The step of shrinking is conducted so as to shrink in an areal shrinkage of 35% or more.

The invention discloses steel-bamboo mixed fiber regenerated thermal insulation concrete and a preparation method thereof, belonging to the technical field of building materials.The steel-bamboo mixedfiber regenerated thermal insulation concrete is prepared from the following raw materials in percentage by weight:15-22% of cement,10-15% of water, 29.75-36.65% of acidified regenerated fine aggregate, 29.75-36.65% of acidified regenerated coarse aggregate, 0.5 -1% of polypropylene composite bamboo fiber, 0.5-1% of steel fiber, 0.1-0.2% of hydroxypropyl methyl cellulose ether, 0.5-1% of polystyrene particles and 0.1-0.3% of resin rubber powder.The invention also discloses a preparation method of the steel-bamboo mixed fiber regenerated thermal insulation concrete.The steel-bamboo mixed fiberregenerated thermal insulation concrete has the advantages of tensile resistance, bending resistance, impact resistance, fatigue resistance and the like.

The invention discloses an operative incision traction and protection device, which comprises an elastic inner ring made of an elastic material, a turnover traction outer ring and a soft bushing, wherein the elastic inner ring and the turnover traction outer ring are connected with two open ends of the soft bushing respectively; and the areas of the elastic inner ring and the turnover traction outer ring are larger than the size of an operative incision. The operative incision traction and protection device has the beneficial effects that: the operative incision can be effectively protected from being infected and can be uniformly dragged, and the size of the operative incision can be adjusted conveniently.

The invention discloses a slag adhesion preventing separant for a stirring head and a preparation method thereof and solves the problem of slag adhesion of the stirring head. The slag adhesion preventing separant for the stirring head is prepared from the following raw materials in parts by weight: 55 to 75 parts of quartz powder, 5 to 15 parts of amorphous graphite, 5 to 15 parts of silicon carbide, 3 to 8 parts of clay, 0.5 to 2 parts of sodium carboxymethylcellulose, 1 to 3.5 parts of paper fiber and 0.03 to 0.15 parts of organic fiber. The prepared separant disclosed by the invention has the characteristics of good adhesion under a normal temperature, high low-temperature bonding strength, reduction or loss of high-temperature bonding strength and benefit to automatic falling off; theseparant can generate larger volume expansion or contraction along with temperature rise and fall, so that the separant is favorable for self crack generating and has an automatic structure collapsingeffect. When being applied to the surface of a refractory material of the KR stirring head, the separant has an effect of preventing slag adhesion; thus, labor intensity is reduced, and service lifeof the stirring head is improved.

The invention discloses wall finish for underground space decoration. The wall finish is prepared from the following raw materials in parts by weight: 40-60 parts of silica sol, 220-250 parts of acrylate resin, 5-8 parts of a thickening agent, 4-7 parts of sodium metaaluminate and 7-9 parts of a mildewproof agent. Silica sol particles are ultrafine, can penetrate into a base layer through the capillary action of the wall surface and can react with calcium hydroxide in the concrete base layer to generate calcium silicate, and thus coating has high bonding force. When moisture in the silica solevaporates, colloidal ions firmly adhere to the surface of an object, and silica-oxygen bonded reticular membrane structures are formed between the particles. The silica sol can be mutually complemented with the characteristics of the acrylic resin, and thus the composite coating with excellent properties can be prepared. The sodium metaaluminate reacts with the silica sol in a silica sol system,thus a layer of zeolite film is formed on the surface of a paint film, the zeolite film is provided with a porous structure and has high catalytic activity, and the effect of the mildewproof agent oninhibiting and killing mold can be improved. The wall finish has the characteristic of good environmental protection while having a mildewproof effect.

The invention discloses hot air drying equipment for a corrugated case printing machine. The hot air drying equipment structurally comprises a draught fan, side supporting plates, a dehumidification pipe, control panels and a drying box, wherein the draught fan is fixedly installed at the top of the drying box, the side supporting plates are welded to the side ends of the drying box, and the dehumidification pipe is fixedly installed at the upper ends of the side supporting plate in an embedded manner. In the drying process, hot air is guided into conduction pipes through air inlets in the front ends of connecting supporting plates, so expansion films expand and swell, at the moment, the angle between swinging plate bodies increases, the four outer sides of a corrugated plate are propped open, magnetic attraction is carried out through second magnetic blocks on laminating plates and first magnetic blocks, meanwhile the laminating plates rotate around positioning shafts, when the laminating plates are attached to the surfaces of the swinging plate bodies, collision plates and the surfaces of the swinging plate bodies maintain laminating strength, the traction on the outer side on the corrugated plate is improved, large shrinkage occurring to the corrugated plate in the drying process is prevented, and ink printing gelatinization of the corrugated plate during drying is avoided.

The invention discloses an automatic-casting material for coke oven coal loading holes, wherein the automatic-casting material comprises, by weight, 82-92% of pyrophyllite, 3-10% of expanded vermiculite, 2-5% of bentonite, 1-4% of silicon micro-powder, and 0.5-1.5% of fireproof fiber. The automatic-casting material of the present invention has advantages of good construction performance, good application performance, good high-temperature resistance, easy uncovering, no corrosion on other equipment, no influence on the quality of coke after the falling of the material into the coke oven, and the like.

The invention discloses modified PP, a preparation method thereof and a twin-screw extruder used for preparing the modified PP. The modified PP is prepared from, by weight, 22-36 parts of PP resin, 25-37 parts of EPDM, 10-45 parts of talcum powder, 12-23 parts of polycarbonate, 11-19 parts of polyamide, 9-16 parts of modified polyphenylene ether, 13-22 parts of thermoplastic polyester, 1-7 parts of a stabilizer, 2-9 parts of a compatibilizer and 2-7 parts of an antioxidant. The modified PP and the preparation method thereof have the advantages that by adopting the PP resin, the EPDM, T15 and the polycarbonate, the advantages of high impact, weather resistance, high mobility and sprayability can be improved; by adopting the PP resin, the EPDM, T20 and the polyamide, the advantages of high rigidity, weather resistance, scratch resistance and low odor can be improved; by adopting the PP resin, the EPDM, T30 and the modified polyphenylene ether, the advantages of rigidity and toughness balance and low shrinkage can be improved; by adopting the PP resin, the EPDM, T40 and the thermoplastic polyester, the advantages of high melt value, low odor and rigidity and toughness balance can be improved; the rigidity of a system is improved, and the molding shrinkage rate is reduced, thereby obtaining the reinforced PP material with excellent comprehensive performance.

The invention discloses a seismic material for an FRP-reinforced RC cylinder. The seismic material comprises the following components: Portland cement, silicon powder, mineral powder, EVA, aluminum sulfate powder, styrene butadiene rubber powder, ceramsite, iron powder, marble powder, hollow glass beads, polypropylene fibers, fly ash, bentonite, polymer fibers, steel-wire-like fibers, dibenzoyl peroxide, polytetrafluoroethylene, silicon dioxide and water. The seismic material disclosed by the invention is simple in structure, good in seismic effect and good in weather resistance.