653results about How to "Reduce tangling" patented technology

A retractable tube for use in a respiratory apparatus for delivering a pressurized flow of breathable gas to a patient has an internal diameter of about 30 mm or less, a weight of about 500 g / m or less, and an unextended length of about 2 m or less. The retractable tube includes a portion that is extensible in a range of about 40%-400% in response to force applied to the tube, and the extensible portion is configured to return the tube to its unextended length in the absence of force applied to the tube. A respiratory apparatus for delivering a flow of pressurized breathable gas includes a flow generator to generate the flow and a patient interface to deliver the flow to the patient's airways. The flow generator and the patient interface are connected by a retractable tube. A method of delivering a flow of pressurized breathable gas includes connecting the flow generator and the patient interface using a retractable tube.

An angled tissue cutting instrument comprises an angled outer tubular member rotatably receiving a flexible inner tubular member. The inner member has a flexible region in correspondence with an angle of the outer member. The flexible region comprises a helically cut length portion of an elongate tubular body of the inner member and a continuous solid flexible surface secured to an outer surface of the body along the helically cut length portion. A method of fabricating a flexible inner tubular member involves forming a helical cut through the solid wall of a length portion of a tubular body and securing a continuous solid flexible surface to the outer surface of the body along the helically cut length portion to form a flexible region.

An angled tissue cutting instrument comprises an angled outer tubular member rotatably receiving a flexible inner tubular member. The inner member has a flexible region in correspondence with an angle of the outer member. The flexible region comprises a helically cut length portion of an elongate tubular body of the inner member and a continuous solid flexible surface secured to an outer surface of the body along the helically cut length portion. A method of fabricating a flexible inner tubular member involves forming a helical cut through the solid wall of a length portion of a tubular body and securing a continuous solid flexible surface to the outer surface of the body along the helically cut length portion to form a flexible region.

A method and apparatus for damping torque output from a torque converter turbine to input to a transmission. The damper includes: (a) an input device for connection to an engine; (b) a first spring set having drive springs; (c) a second spring set having secondary springs; (d) a third spring set having parallel springs; (e) a floating apparatus; and (f) an output device. Springs of the first spring set are compressible in a forward direction toward the output device as a result of torque applied to the input device and compressible in a reverse direction toward the input device as a result of torque applied by the output device. The first and second spring sets are in series between the input device and output device during a first forward compression of the first spring set, and the series is in parallel with the third spring set between the input apparatus and output device during a second compression of the first spring set. The first spring set is in parallel with the third spring set between the input apparatus and output device without the second spring set during a third compression of the first spring set. The floating apparatus is between the input apparatus and the output device and between springs of said first and second spring sets during the first forward compression of the first spring set. The method includes the steps of: (a) operating a spring set one and a spring set two in series between torque input and torque output; (b) placing a spring set three in parallel with spring sets one and two allowing more torque per degree of wind-up than in step (a); and (c) removing spring set two from series with spring set one resulting more torque per degree of wind-up than in step (b).

The invention relates to organic silicon resin, in particular to a method for preparing hydroxyl-terminated hyperbranched polyester modified organic silicon resin. The method comprises the following steps of: adding 40 to 60 weight percent of hydroxyl-terminated hyperbranched polyester, 40 to 60 weight percent of organic silicon resin and a cross linking catalyst into a reactor; after heating the mixture for 1 to 3 hours at the temperature of 110 to 120 DEG C, warming to the temperature of 150 to 180 DEG C and heating for 1 to 3 hours; and finally, reducing the temperature to the room temperature and adding an organic solvent to regulate the solid content to the range of 60 to 70 percent so as to obtain the hydroxyl-terminated hyperbranched polyester modified organic silicon resin. The method combines the advantages of the hydroxyl-terminated hyperbranched polyester with the organic silicon resin and excellent heat resistance, low surface energy, excellent boiling resistance and excellent salt fog resistance are obtained. The resin prepared by the method disclosed by the invention can be used for preparing a coating with high temperature resistance and low surface energy.

The invention relates to a photocuring material which comprises the following components in percentage by weight: 60-98% of hyperbranched polycarbosilane, 0-35% of active diluent, 0.1-8% of photoinitiator and 0-10% of additive, wherein the hyperbranched polycarbosilane contains an unsaturated double bond, and the number-average molecular weight of the hyperbranched polycarbosilane is 300-15,000; the unsaturated double bond is acryloyloxy, methylacryloyloxy, vinyl or allyl; and the content of the unsaturated double bond in the hyperbranched polycarbosilane is 1-30% by weight. The invention also relates to an application of the photocuring material in photocuring 3D printing and an application in preparation of a SiC component. The photocuring material provided by the invention has relatively low viscosity and is convenient to spray out of a nozzle of 3D printing equipment while the curing speed is high and the shrinkage rate in curing is little.

The invention discloses a manufacturing method for a fibrous membrane of an extremely hydrophobic organic macromolecule chemical compound with an oil-water separation function in the technical field of fibrous membrane manufacturing. The manufacturing method comprises the following steps: synthetizing a copolymer with excellent electrostatic spinnability by regulating the compounding ratio of a monomer and controlling the condition of a suspension polymerization technology and by adjusting and controlling the compositions of a solution, processing parameters and the temperature and humidity conditions of environment, and spinning a copolymer solution into the fibrous membrane with the advantages of uniform and small bore diameters, high porosity, large flux and extremely hydrophobic and oleophylic properties by using an electrostatic spinning technique. The obtained fibrous membrane has the advantages that the specific surface area is large, the patterns are large, the stacking structure is proper, and the fibrous membrane is in a three-dimensional bore channel structure. Compared with an existing polymer-based oil-water separation member, the fibrous membrane has the advantages that the bore channel structure is more reasonable, the separation capacity is stronger, the separation efficiency is higher, the anti-pollution capacity is stronger, the membrane bores are not easy to block, the oil-water selectivity is stronger, the mechanical strength is higher, the flexibility and the temperature resistance are better, the preparation process is shorter, the consumed energy is little, the filtering rate is higher, and the cost is lower, so that the fibrous membrane can better satisfy the requirements of industrial practicality.

The invention discloses a preparation method of high-strength and high-modulus polyvinyl alcohol-graphene nano composite fibers. The preparation method comprises the following steps: uniformly mixing graphene and polyvinyl alcohol in a mixed solvent; spinning by a gel spinning method; and carrying out high-power thermal stretching to obtain the high-strength and high-modulus polyvinyl alcohol-graphene nano composite fibers. According to the preparation method, raw materials are cheap, the production process is simple and the industrial large-scale production is easy to realize. According to the prepared polyvinyl alcohol-graphene nano composite fibers, the tensile strength is 1.4GPa-2.2GPa, the Young modulus is 36GPa and the elongation at break is 10%; the surfaces of the fibers are smooth and the sections of the fibers are round; and the requirements on high-strength and high-modulus polyvinyl alcohol fibers in special fields and the fields of constructions and industries can be met.

The invention relates to a process for preparing a rust-bearing rust-proof heavy-duty coating and belongs to the technical field of rust-bearing rust-proof heavy-duty coating preparation. The process comprises the following steps: 1) stirring; 2) grinding; 3) dispersing; 4) preparing a resin; 5) preparing the coating; and 6) stirring. The production process is simple and quick, and the produced coating has high permeability, high solid content and low viscosity and can passivate active and harmful iron compounds in a rust layer into harmless fillers.

The invention relates to a brush-like block copolymer with macromolecules at chain ends and a preparation method thereof, belonging to the technical field of high-polymer crystalline materials. The block copolymer provided by the invention can form ordered nano-structure photon crystals by self-assembly, and has the characteristic of adjustable chemical and mechanical properties. The chemical expression of the block copolymer is (N-PMMA)y-b-(N-PS)x, and the molecular weight is 3*10<5>-4*10<6>; in the expression, x=y; N-PMMA is norbornene polymethyl methacrylate macromolecule monomer of which the number-average molecular weight is 6000; and N-PS is norbornene polystyrene macromolecule monomer of which the number-average molecular weight is 6000. The preparation method of the brush-like block copolymer is a ring-opening metathesis polymerization method; and the block copolymer prepared by the method has very low winding of the side chain, and can quickly form the ordered nano-structure photon crystals by self-assembly.

A method and apparatus for damping torque output from a torque converter turbine to input to a transmission. The damper includes: (a) an input device for connection to an engine; (b) a first spring set having drive springs; (c) a second spring set having secondary springs; (d) a third spring set having parallel springs; (e) a floating apparatus; and (f) an output device. Springs of the first spring set are compressible in a forward direction toward the output device as a result of torque applied to the input device and compressible in a reverse direction toward the input device as a result of torque applied by the output device. The first and second spring sets are in series between the input device and output device during a first forward compression of the first spring set, and the series is in parallel with the third spring set between the input apparatus and output device during a second compression of the first spring set. The first spring set is in parallel with the third spring set between the input apparatus and output device without the second spring set during a third compression of the first spring set. The floating apparatus is between the input apparatus and the output device and between springs of said first and second spring sets during the first forward compression of the first spring set. The method includes the steps of: (a) operating a spring set one and a spring set two in series between torque input and torque output; (b) placing a spring set three in parallel with spring sets one and two allowing more torque per degree of wind-up than in step (a); and (c) removing spring set two from series with spring set one resulting more torque per degree of wind-up than in step (b).

The invention provides a washing method for washing machines, as well as a washing machine thereof. The washing method is characterized in that while a stirrer rotates during wash, a drainage pump pumps washing water out from a water storage bucket and jets the washing water upwards through a hollow stirrer shaft and a hollow core hole of the stirrer so as to lift washed clothes. During wash, as the drainage pump pumps the high-pressure water out from the hollow stirrer shaft and the hollow core hole of the stirrer so as to spray and lift the washed clothes, the washed clothes are effectively prevented from receiving the long-term wear of a stirrer vane, and the washed clothes are allowed to receive the wash and rinse of high-pressure water flow, the stir of the stirrer and the wash in various washing forms at the same time. The invention has the advantages of low wear, low intertwining, low noise, high cleaning rate, high washing efficiency and the like.

This invention relates to a double drive compound flow washing machine, which comprises the following parts: plane frame elements, water barrel upper ring, water barrel 9, water barrel cover 56, case elements 10, washing and drying barrel 11, balance ring 55, bottom socket 31, central socket 44, upper cover elements 61, ring elements 76, water in device, level control device, first and second washing drive flow generating device; control device, drainage device and safety protection device. When the machine works, the first flow generating device wheel generates front and back alternating plane flows and the second flow device generates upper flow to generate strong three dimension flow to peel off dirt form clothing and to hold the clothing up.

The invention discloses a method for preparing negative photosensitive polyimide which is based on 2, 2-bis<4-(2, 4-diaminophenoxy) phenyl> hexafluoropropane. The method takes the 2,2-bis<4-(2,4-diaminophenoxy)phenyl> hexafluoropropane and dihydric acid anhydride as raw materials for carrying out the polymerization reaction, hyper-branched fluoride-containing polyamic acid which takes the macromolecular chain end group as the anhydride group is obtained, the hyper-branched fluoride-containing polyamic acid is further reacted with p-hydroxyaniline or m-hydroxyaniline, hyper-branched fluoride-containing polyimide which takes phenolic hydroxyl as the end group by chemical imidization reaction is obtained, phenolic hydroxyl end-blocked fluoride-containing hyper-branched polyimide powder is obtained by precipitation, washing and vacuum drying process, and the hyper-branched fluoride-containing polyimide photosensitive material with the negative photosensitive performance is obtained by undergoing the functionalization after the dissolution. The material has high photosensitive performance, high resolution and excellent process, and the cured product has low water absorption, excellent heat resistance, dielectric performance and mechanical performance, thus having great application prospect in the field of electronic micro-electronics.

The invention discloses a preparation method of high-strength polyacrylonitrile nano-composite fiber. The preparation method comprises the following steps: 1, feeding graphene into an organic solvent or a mixed solution of the organic solvent and water, evenly dispersing, feeding homopolymer or copolymer of acrylonitrile, and dissolving at the temperature of 30-120 DEG C to obtain a spinning solution; or directly mixing the homopolymer or copolymer of acrylonitrile with graphene, and then dispersing the mixture into concentrated acid or a water solution of inorganic salt to obtain the spinning solution; 2, filtering the spinning solution at the temperature of 20-80 DEG C, defoaming, and spraying the deformed spinning solution into a coagulating bath with the temperature of -40 to 5 DEG C by a spinneret plate to form nascent fiber; 3, extracting the nascent fiber, drying, and carrying thermal stretch and heat setting to obtain the high-strength polyacrylonitrile nano-composite fiber. The preparation method is simple in production technology, high in product performance and easy in realization of industrial mass production.

The invention relates to the technical field of agricultural mulching film recovery machinery, in particular to a film release plate type agricultural film recovery machine. The film release plate type agricultural film recovery machine comprises a machine frame, a soil digging device and a film release plate type nail band device. The soil digging device capable of digging out a residual film is arranged under the front portion of the machine frame, the film release plate type nail band device capable of conveying the residual film is installed on the machine frame, the front portion of the film release plate type nail band device is obliquely arranged in the direction that the front portion is lower than the rear portion, and film picking spike teeth are evenly distributed on the outer side of the film release plate type nail band device. The film release plate type agricultural film recovery machine is reasonable and compact in structure and convenient to use, digs out residual films through the soil digging device, collects the residual films through the film picking spike teeth, remarkably reduces the probability that the residual films are wound or hung on the spike teeth, achieves automatic removal of the residual films on the film picking spike teeth, saves the time and labors, remarkably improves the effective recovery rate of the residual films, prolongs the service life of equipment and has the advantages of being safe, simple, convenient and efficient and capable of saving labors.

The invention relates to the technical field of home appliances, in particular to a speed reducer and a washing machine with the speed reducer. According to the technical aim, the problem is solved that in the prior art, an impeller and a stirrer of an impeller washing machine cannot generate speed difference in rotation. The invention provides the speed reducer. The speed reducer comprises a shell, a first planet wheel component, a second planet wheel component, an input shaft, a first output shaft and a second output shaft; the first planet wheel component and the second planet wheel component are arranged in the shell, and the first planet wheel component is connected with the second planet wheel component in a driving mode; the first output shaft and the second output shaft are arranged on one side of the shell and connected with the first planet wheel component respectively, and the second output shaft is arranged on the first output shaft in a sleeving mode; the output shaft is arranged on the other side of the shell and connected with the second planet wheel component; the input shaft can drive the first output shaft and the second output shaft to rotate in the same direction according to the preset speed ratio through the first planet wheel component and the second planet wheel component.

The invention provides a gluing aluminum-based cover plate for PCB drilling and a preparing method thereof. The gluing aluminum-based cover plate for PCB drilling comprises aluminum foil and a water-soluble composite molecular resin layer arranged on the upper surface of the aluminum foil. The water-soluble composite molecular resin layer material comprises water-soluble hot melting resin, water-soluble bonding resin and an assistant. According to the invention, the toughness of the water-soluble composite molecular resin layer is proper, in the drill needle falling process, the guide effect is achieved, and the drilling precision is improved; meanwhile, the hot melting resin in the water-soluble composite molecular resin layer achieves the effect of lubricating a drill bit and cooling the drill needle during drilling, the hole wall roughness is effectively improved, wire winding is reduced, the drill bit temperature is reduced, the service life of the drill needle is prolonged, and in addition, the water-soluble composite molecular resin layer is good in water solubility, easy to treat after drilling, not prone to being attached into holes of a PCB and capable of ensuring drilling quality.

The invention relates to a composite fully-degradable material and a preparation method thereof. The composite fully-degradable material has a double-layer film structure and comprises a first layer film and a second layer film, wherein the degradation time of the first layer film is longer than the degradation time of the second layer film, the raw materials of the first layer film comprise a degradation agent, a heat stabilizer, a light stabilizer, an antioxidant, low density polyethylene and linear low density polyethylene, and the raw materials of the second layer film comprise polyadipic acid / butylene terephthalate and polylactic acid. According to the present invention, the composite fully-degradable material uses the double-layer structure, and various layers are prepared from the materials having different degradation characteristics and have different degradation rates, such that various parts can simultaneously achieve the degradation ending points during the actual use process of the prepared mulch film so as to significantly improve the practicality of degradation mulch film, reduce the influence of the residual film on the next crops, save the labor cost, and promote the development of agricultural productivity.

The invention discloses a septic tank special material with good processing fluidity. The septic tank special material is prepared from the following components in parts by weight: 100 parts of HDPE (high-density polyethylene); 5 to 20 parts of calcium carbonate; 1 to 10 parts of PP (propene polymer); 1 to 5 parts of naphthenic oil; 0.5 to 2 parts of zinc stearate. The invention also discloses a preparation method of the septic tank special material. The preparation method comprises the following steps: S1, mixing the HDPT, the calcium carbonate, the PP, the naphthenic oil, the zinc stearate and the SEBS, softening and fusing; S2, smashing an anti-bio agent and spraying on LLDPE (linear low density polyethylene) flux, and cooling to room temperature, so as to obtain an anti-bio microcapsule; S3, adding the anti-bio capsule obtained in S2 into the fusant of S1, and performing injection molding.

An outdoor electric power cabinet disclosed by the present invention comprises a cabinet body, a rainproof cover, a filtering device and a slag discharging groove, the rainproof cover is fixed at two corresponding sides of the top of the surface of the cabinet body, and the filtering device is fixed between the top of the surface of the cabinet body and the two corresponding sides of the inner wall of the rainproof cover. The slag discharging groove is formed in the surface of the cabinet body and is located at the bottom of the filtering device, an air inlet is formed in the surface of the cabinet body and is located at the position of the filtering device, a heat dissipation mechanism is fixed to the top of the inner wall of the cabinet body and is located at the position of the air inlet, and a magnetic block is fixed to the back face of a fan blade of the heat dissipation mechanism. The invention relates to the technical field of power devices. According to the outdoor electric power cabinet, the purposes of filtering and self-cleaning are achieved, dust and sundries can be timely filtered and self-cleaned, adhesion to the surface of a filter screen is reduced, blockage can be effectively prevented, the filtering effect is good, meanwhile, heat dissipation is facilitated, the service life of components is prolonged, and the use performance is improved.

The invention provides a pulsator washing machine and a washing control method thereof. The washing control method comprises the following steps that when the fact that water is fed into the pulsator washing machine to a first preset water level is detected, a pulsator of the plusator washing machine is controlled to rotate at a first washing beat for water supplementation washing; when the fact that the water supplementation washing time is up is detected, the plusator washing machine is controlled to perform washing in a mode of combining pulsator stirring washing and drum rotating washing until washing is finished. According to the pulsator washing machine and the washing control method thereof, clothes can be washed uniformly, the washing effect of the clothes is improved, the washing performance of the pulsator washing machine is improved, and winding of the clothes is reduced.

The invention relates to preparation of graphene oxide nanometer modified acrylate aqueous dispersion and application of the same to waterborne automobile coating, belongs to series of waterborne automobile coating, and discloses a method for preparing graphene oxide nanometer modified acrylate aqueous dispersion. The preparation and the application have the advantages that special physical and chemical performance of nanometer materials and merits of acrylate are sufficiently combined with one another, accordingly, the graphene oxide nanometer modified acrylate aqueous dispersion is excellent in performance in the aspects of mechanical properties, solvent resistance, stability and the like, formed paint films are high in gloss, good in fullness and solvent resistance and excellent in mechanical performance, the comprehensive performance can be greatly improved, environments can be protected, energy can be saved, and the graphene oxide nanometer modified acrylate aqueous dispersion is high in operability and convenient to popularize and apply and has a broad market prospect.

The invention belongs to the field of sorting devices, and particularly relates to a sorting device and a technical method before the incineration treatment of urban household garbage. A feeding apparatus, a plate conveyer, a bag breaker and a PK chain conveyer are connected with an adjustable bar vibrating screen in sequence; an oversize product discharge opening of the adjustable bar vibrating screen is connected with a charging opening of a drum screen; an undersize product discharge opening of the adjustable bar vibrating screen is connected with a charging opening of the breaker; an oversize product discharge opening of the drum screen is connected with a feeding conveying belt of a positive-pressure wind separator; an undersize product discharge opening of the drum screen is connected with a charging opening of a second magnetic separator. The invention provides the sorting device and the technical method before the incineration treatment of the urban household garbage, through which an apparatus is used for replacing manual hand picking to sort a large article when the urban household garbage is sorted, meanwhile, a flexible entanglement can be also sorted out, the labor intensity of a worker is decreased, the occurrence that the apparatus is entangled is reduced, and the work efficiency of a sorting line for the urban household garbage is improved.

The invention discloses a reactive ionic liquid modified and dispersed carbon nano tube and a method for preparing a carbon nano tube composite material. The method is characterized by particularly comprising the following steps of: modifying the surface of a carbon nano tube by using the ionic liquid with a reactive group; mixing the modified carbon nano tube with a polymer solution which contains the corresponding reactive group, and carrying out chemical reaction bonding between the reactive group of the ionic liquid and high-molecular active groups under the condition of proper temperature and / or catalyst to furthest realize the uniform dispersion of the carbon nano tube in a matrix and enhance the interface strength between the carbon nano tube and the high-molecular matrix so as to prepare the carbon nano tube composite material. The method disclosed by the invention has the advantages of simple steps, environmental friendliness, good compatibility and suitability for industrialized production. The material prepared by adopting the method disclosed by the invention keeps both flexibility and processibility of the polymer matrix and excellent characteristics of the carbon nano tube.

The invention discloses a mushroom cultivation charging mulcher which comprises a support, a feeding hopper and a conveying belt. The feeding hopper is mounted on the support, a feeding opening is formed in the bottom of the feeding hopper, and the conveying belt is placed below the feeding hopper and is used for conveying cultivation beds. The feeding hopper is provided with a first side plate and a second side plate which tilt relatively, the bottom of the first side plate is provided with a stopping part which extends to the second side plate in a curved mode, and the feeding opening is formed between the stopping part and the bottom edge of the second side plate. A roller which is arranged at the position, close to the feeding opening, in the feeding hopper in a rotatable matching mode, the roller presses close to the first side plate, and material dialing teeth are distributed on the peripheral face of the roller. The mushroom cultivation charging mulcher is simple in structure, low in manufacturing cost and convenient to popularize, the feeding opening which is obliquely arranged is used, the roller with the material dialing teeth is mounted on the side edge of the feeding hopper, caking and bridging of materials are prevented, the falling materials are distributed more evenly, the feeding opening with the adjustable size is arranged to be used for controlling the feeding speed, and the demand for charging of the cultivation beds is met.