34results about How to "Difficult to contact directly" patented technology

A packaging resin composition comprises polymer resin containing an epoxy group or an unsaturated double bond, a hardener enabling the polymer resin to crosslink and solidify, a filler and a phosphor, wherein the a mass ratio of the polymer resin and the hardener is 8.0-92.0 w % : 8.0-92.0 w % in components consisting of the polymer resin and the hardener; an amount of the filler is 0.05-10.0 wt % of the total amount of the polymer resin and the hardener, and an amount of the phosphor is 1-40.0 wt % of the total amount of the polymer resin and the hardener. The packaging resin composition provided by the invention enables the phosphor in packaging colloid of light emitting diodes to uniformly distribute, and thus can effectively reduce difference in color temperature of the light emitting diodes; furthermore, the uniformly distributed phosphor is not easy to directly contact with a chip, and thus problems of reduced efficiency and increased loss rate caused by poor heat radiation of the phosphor can be reduced, and yield of the product can be improved.

The invention discloses a thin-wall lightweight meter cable for oil-gas engineering. The thin-wall lightweight meter cable comprises a cable core and a sheath layer coating the outer side of the cablecore, wherein the sheath layer is prepared from the raw materials in parts by weight: 60-80 parts of ethylene propylene terpolymer rubber, 40-50 parts of polyurethane rubber, 50-60 parts of nitrile silicone rubber, 6-10 parts of vulcanizer, 40-50 parts of vermiculite powder, 20-30 parts of precipitated barium sulfate, 60-70 parts of channel carbon black, 4-8 parts of octyl phenolic aldehyde tackifying resin, 40-50 parts of carbon fibers, 4-8 parts of propylene glycol polysebacate, 2-4 parts of modified soybean oil and 3-5 parts of anti-aging agent.

The invention relates to a method for preparing a key intermediate 4-methyl-5-ethoxazole of vitamin B6 and belongs to the technical field of crude drug preparation. The method for preparing 4-methyl-5-ethoxazole comprises the steps that firstly, 4-methyl-5-ethyoxyl-1,3-oxazole-2-nonanoic acid-ethyl ester, methylbenzene, drinking water and sodium hydroxide are sequentially put into a hydrolysis reaction still according to a certain proportion, and stirring, heat preservation and reacting are carried out; liquid separation is carried out, and the pH value of the water phase is adjusted to rangefrom 1.0 to 2.5; an organic solvent is added to the system obtained in the second step, reacting is carried out by controlling the temperature ranging from 30 DEG C to 50 DEG C until no carbon dioxideis generated; after decarboxylation is finished, the pH value is adjusted to be larger than or equal to 9.0, liquid separation is carried out, the organic phase is subjected to vacuum distillation, and 4-methyl-5-ethoxazole is obtained. The process is easy and safe to operate, and industrial production is easy.

A waterproof electronic equipment unit attached and fixed to a mounted surface having a flat mounting portion and depressed portion is reduced in size by effectively utilizing the depressed portion. A circuit substrate on which is mounted a connector housing is hermetically housed in a frame configured of a base and cover, the base includes a multiple of mounting legs fixed by screwing to a flat mounting portion, a base depressed portion disposed in a mounting surface depressed portion, and an inlet of a water-repellent filter opposing the flat mounting portion across a gap D1, and the connector housing and a high component are disposed in the base depressed portion.

The invention discloses access control equipment based on a face recognition technology and a use method thereof, and belongs to the field of access control. When the access control equipment based on the face recognition technology and the use method thereof are used by crowds with relatively low face heights, a handle is manually pulled to drive a screen of a face recognizer to move towards the face direction of a user, so that face recognition is completed. Compared with the prior art, the access control equipment has the advantages that the maintenance process of an electric sliding way is avoided, cost input is reduced, when the bending angle of a double-layer bending rod is too large, an oil outlet end makes contact with the bending position of an inner elastic supporting rod, a fixed-point segmented ring at the center line of the double-layer bending rod extrudes a double-layer air sealing bag after being stressed, lubricating oil in the fixed-point segmented ring overflows along the surface of the double-layer air sealing bag and is in contact with the bent center line of the inner elastic supporting rod, so that the effect of lubricating and maintaining the bent part at a fixed point is achieved, the bent point of the inner elastic supporting rod is effectively protected from being aged and cracked due to bending, and the placing and maintaining frequency of the double-layer bending rod is effectively reduced.

The invention provides an enzymic preparation as well as a preparation method and application thereof, which belongs to the technical field of enzymic preparations. The enzymic preparation comprises acore material as well as a hydrophobic layer and an outer wall layer covering the core material; the core material comprises enzyme molecules, a porous absorption material and a polysaccharide layer,the enzyme molecules are absorbed inside the porous absorption material, and the polysaccharide layer is absorbed on the surface of the porous absorption material; the hydrophobic layer material is selected from one or more of sodium stearate, cetyl trimethyl ammonium bromide, alpha-cyclodextrin and polylactic acid; the outer wall layer is selected from one or more of gelatin, glycerinum, sodiumalginate and polysaccharide; and the weight ratio of the core material to the hydrophobic layer and the outer wall layer is (80 to 110): (0.3 to 0.7): (2.00 to 4.00). The enzymic preparation is good in heat stability and good in processing resistance.

The invention discloses a fishhook production process for improving the surface brightness of a fishhook. The fishhook production process comprises the following steps that S1, the fishhook to be treated is pretreated; S2, the fishhook is subjected to nickel plating; S3, the fishhook obtained after nickel plating is electroplated with metal elements with the brightening effect; and S4, the fishhook is plated with colored paint in an electrophoresis mode. A colored paint layer obtained in the electrophoresis mode is uniform in thickness, uniform in paint covering and high in light reflecting capacity, the color of the fishhook is bright, and the strength performance of the obtained fishhook is good.

The invention relates to a connecting structure for a marble pillar trim strip and furniture. The connecting structure for the marble pillar trim strip and the furniture comprises a plate type pillar body assembled to furniture to be connected; two grooves with circular-arc-shaped parallel sections are formed in the left and right sides of an inner surface of a pillar body; the radian of each groove is greater than 180 degrees; the connecting structure further comprises inserting parts which are in inserting march with the grooves; the inserting parts are arranged on the furniture to be connected and the inserting part corresponding to each groove is arranged on one straight line; each inserting part comprises a strip-shaped base plate; two surrounding elastic clamping sections are symmetrically arranged at the left and right ends of each strip-shaped base plate; a certain distance is formed between free ends of the two elastic clamping sections; a mounting hole is formed in the middle of each strip-shaped base plate; the inserting parts are assembled on the furniture by the mounting holes; the inserting parts are arranged into the grooves in an interference inserting manner. By adopting the connecting structure, the furniture can be connected by inserting and damages to the previous furniture are avoided; the furniture is convenient and rapid to mount and replace.

The invention discloses a quick electric heating faucet in order to overcome the defects that an electric heating element of an existing electric heating faucet directly makes contact with water flow and accordingly the safety hidden hazard of electric leakage exists in the use process, the water flow heating effect is not good, and power consumption is large. The quick electric faucet comprises a connection body on the upper portion and a heating body on the lower portion. The connection body is provided with a switch lever and a water pipe connector. A heating mechanism is connected to the side wall of the heating body and comprises a heating pipe, an air guide pipe and an electric heating pipe. The electric heating pipe is installed in the vertical heating pipe, the lower end of the air guide pipe is connected to the upper end of the heating pipe, the upper end of the air guide pipe is communicated with the heating body, and the air guide pipe is obliquely arranged towards the heating body from bottom to top. A water flow refining mechanism is disposed between the connection body and the heating body. A water outlet is formed in the lower end of the heating body. Water flow flowing out of a water outlet of the faucet of the structure is not likely to make direct contact with the heating mechanism, so that absolute insulation is achieved, the electric leakage risk is small, the water flow heating effect is good, temperature can be raised quickly, and power consumption is low.

The invention discloses a preparation method of a gap-variable adsorption material taking porous ceramic as a matrix, and belongs to the field of ceramic adsorption materials. Porous ceramic is used as a matrix, a phase change layer and a heat-resistant outer coating film are formed on the surface of the matrix, and the heat-resistant outer coating film with a high melting point wraps the outer side of the phase change layer with a low melting point, thereby manufacturing the creative adsorption material having the gap-variable function. When a heat flow (hot gas or hot water) is used for backwashing the novel adsorption material, the phase change layer is heated and melted and is coated between the porous ceramic and the heat-resistant outer coating film in a fluid form, so that the heat-resistant outer coating film generates a continuous dynamic fluctuation process under the washing force of the heat flow; that is, the size and the shape of pores are changed, through the dynamic fluctuation process of the heat-resistant outer coating film, the heat-resistant outer coating film is more fully contacted with a heat flow, and meanwhile, loosening and falling of impurities on the surface of the heat-resistant outer coating film are also promoted, so that a high-efficiency and high-effect backwashing process is realized.

The invention discloses a MEG / Si / C composite negative electrode material for lithium ion batteries and a preparation method thereof. The composite negative electrode material comprises the following components in mass fractions: 2-20% of nano silicon powder, 1%-3% of surfactant % and carbon source 10~30%, and the balance is micro-expanded graphite. Micro-expanded graphite was prepared by chemical oxidation intercalation method and low-temperature thermal expansion technology, and then micro-expanded graphite / silicon / carbon (MEG / Si / C) composite negative electrode materials for lithium-ion batteries were prepared by mechanical ball milling and high-temperature carbonization. The invention not only effectively relieves the volume expansion and contraction effect of graphite intercalation / delithiation, but also increases lithium intercalation / delithiation channels, which is beneficial to high-current charging and discharging, and ensures proper volume energy density and coulombic efficiency of the negative electrode material. The specific capacity of the first discharge can reach 857.9 mAh / g, which has large specific capacity, good rate performance and stable electrode cycle. The preparation method of the invention has simple process flow, simple and easy-to-obtain raw materials, low cost, and is easy for large-scale production.

The invention discloses an instrument signal cable for controlling a computer. The instrument signal cable comprises a cable core and a jacket layer covering the outer side of the cable core; the jacket layer is prepared from the following raw materials in parts by weight: 100 to 110 parts of main materials, 1.5 to 2.5 parts of tert-butyl hydroperoxide, 2 to 4 parts of lauric acid, 1 to 2 parts oftetramethyl thiuram disulfide, 20 to 30 parts of heavy calcium carbonate, 15 to 25 parts of talcum powder, 45 to 55 parts of expanded perlite, 2 to 4 parts of melamine resin, 35 to 45 parts of cottonand linen fiber, 3 to 7 parts of plasticizer, 2 to 4 parts of antioxidant 1010, 1 to 2 parts of ultraviolet absorbent UVP-327, and 0.5 to 1.5 parts of light stabilizer GW-540. The instrument signal cable for controlling the computer is good in bend resistance and pulling resistance, high in tear strength, capable of preventing the direct contact between oxygen or vapour and a carbon chain, capable of effectively improving the hot oxygen stability and the aging resistance, and long in service life.

The invention discloses a quick electric heating faucet in order to overcome the defects that an electric heating element of an existing electric heating faucet directly makes contact with water flow and accordingly the safety hidden hazard of electric leakage exists in the use process, the water flow heating effect is not good, and power consumption is large. The quick electric faucet comprises a connection body on the upper portion and a heating body on the lower portion. The connection body is provided with a switch lever and a water pipe connector. A heating mechanism is connected to the side wall of the heating body and comprises a heating pipe, an air guide pipe and an electric heating pipe. The electric heating pipe is installed in the vertical heating pipe, the lower end of the air guide pipe is connected to the upper end of the heating pipe, the upper end of the air guide pipe is communicated with the heating body, and the air guide pipe is obliquely arranged towards the heating body from bottom to top. A water flow refining mechanism is disposed between the connection body and the heating body. A water outlet is formed in the lower end of the heating body. Water flow flowing out of a water outlet of the faucet of the structure is not likely to make direct contact with the heating mechanism, so that absolute insulation is achieved, the electric leakage risk is small, the water flow heating effect is good, temperature can be raised quickly, and power consumption is low.

The invention discloses an environment-friendly degradable preservative film and preparation method thereof, and relates to the technical field of preservative films. The film comprises a preparation main body, a mounting part is arranged at the top of the outer wall of the right side of the preparation main body, preparation devices are fixedly connected to the tops of the inner walls of the two sides of the preparation main body, a control panel is fixedly connected to the middle position of the top of the front face of the preparation main body, adjusting rollers are arranged at the positions, located on the two sides of the preparation devices, of the outer wall of the left side of the preparation main body, and a collecting frame is fixedly connected to the bottom of the outer wall of the left side of the preparation main body. According to the environment-friendly degradable preservative film and the preparation method thereof, the tension force of the surface can be further adjusted, the integrity of the film can be conveniently protected, the incomplete processing film caused by non-uniform mixing and the damage of parts during adjustment are effectively avoided, the extrusion stability of the preservative film is further improved, the consistency of the thickness of the preservative film is ensured, and the balance of production raw materials of the preservative film can be ensured.

The invention discloses a plant ecological building curtain wall for a bottom-layer building, and belongs to the field of ecological building curtain walls. According to the scheme, gas generated through pheromone volatilization can be discharged to the position of landscape plants along an insect inlet channel, insects in the landscape plants are attracted to crawl to the position where an insect catching bottle is located through pheromone, at the moment, under the action of the self gravity of the insects and a counter weight part, rubber fan blades easily deform downwards as shown in a figure 8, part of the insects easily fall off from gaps among the multiple rubber fan blades and fall on the pheromone, and kinetic energy generated by falling directly penetrates through the pheromone and a bearing net and falls into distilled water, so that the insects are captured; part of insects open wings to fly in the falling process, do not directly fall to the upper side of the pheromone but slowly fall, but when the insects want to leave the insect catching bottle, the insects are difficult to jack up the rubber fan blades by means of own force, and the insects are difficult to escape from the insect catching bottle.

The invention discloses a preparation method of a hollow fiber membrane based on PTFE. The system comprises a fixed rack, and a controller is fixedly connected to the middle position of the top of the outer wall of the right side of the fixed rack. A driving body is arranged in the middle of the right side of the top of the fixed rack, and blocking frames are fixedly connected to the positions, located on the two sides of the driving body, of the top of the fixed rack. A processing device is arranged in the middle of the left side of the top of the fixed rack, and the top of the processing device communicates with a feeding pipe. The invention relates to the technical field of hollow fiber membranes. According to the preparation method of the hollow fiber membrane based on the PTFE, the auxiliary shell is tightly connected with the isolation cylinder, so that the sealing performance of the device is effectively improved; and the compression mechanism and the processing mechanism can be communicated through the arrangement of the transition piece, so that the precision of internal transmission is guaranteed, and the problems that the raw materials are adhered to the interior of the device during transmission, and the shell is not easy to clean are avoided; meanwhile, tension degree of fiber membrane collection is convenient to adjust, and the problems that the cut line of fiber membranes are uneven is avoided.

The invention relates to the field of water body floating detection equipment, in particular to a floating type underwater observation device. The device comprises a buoyancy buoy body and an instrument cabin; the instrument cabin is internally provided with detection equipment for detecting water body parameters; the buoyancy buoy body is annular; a wave suppression plate is arranged on the buoyancy buoy body and inclines outwards from the axis of the buoyancy buoy body; the buoyancy buoy body is further provided with a cavity used for containing the instrument cabin; the buoyancy buoy body is connected with the instrument cabin through a noose; and the buoyancy buoy body can be used for winding and unwinding the noose. In the prior art, although an effective floating working platform is provided, the water wave resistance of the platform is not excellent. Compared with the prior art, the annular buoyancy buoy body and the wave suppression plate are utilized, so that water waves from different angles can be effectively resisted, and the overall floating stability of the device is improved.

The invention discloses an efficient plasma cutting machine and relates to the technical field of metal cutting. The efficient plasma cutting machine comprises a bottom plate, a cutting device is fixedly connected to the middle position of the top of the bottom plate, a plasma cutter is arranged in the middle position of the top of the cutting device, and bearing plates are fixedly connected to the positions, located on the two sides of the cutting device, of the top of the bottom plate. Supporting bases are fixedly connected to the positions, located on the two sides of the cutting device, of the top of the bearing plate, and positioning guiding pieces are arranged on the sides, close to the cutting device, of the supporting bases. According to the efficient plasma cutting machine, during moving, abrasion of the surface of a moving mechanism is effectively reduced, the service life of the device is further prolonged, vibration generated during cutting of the device is effectively reduced, position deviation of a metal piece in the cutting process is not prone to being caused by vibration, and the situation that chippings enter a driving piece to damage a power piece can be avoided, a stabilizing mechanism can rotate slowly, so that the cutting angle of the device is further increased.

The invention belongs to the technical field of batteries, and particularly relates to a tail aluminum foil treatment method for improving the safety test of a lithium ion battery. The method comprises the following steps: 1, oxidizing the surface of a metal foil at the tail of a short film surface of a cathode plate; 2, coating the surface of the metal foil with the slurry of the safety coating, and then performing performing baking; 3, coating the surface of the safety coating with the cathode active substance slurry, and then performing baking; 4, carrying out rolling, slitting, winding and top side sealing on the baked cathode sheet to form a battery cell. The problem of thermal runaway caused by positive and negative electrode short circuit in the needling process of the battery can be improved, and the safety of the battery can be improved.

The invention discloses a light roof with a structure for regulating the drainage speed, and relates to the technical field of light roofs. The light roof comprises a bearing frame and a second reserved groove, a covering mechanism is arranged at the top of the bearing frame, a covering plate is arranged on the inner side of the covering mechanism, the second reserved groove is formed in the innerside of the middle of the top end of the covering plate, and a movable rod is movably arranged on the inner wall of the second reserved groove. The light roof has the beneficial effects that according to the light roof with the structure for regulating the drainage speed, a first electric push rod, the covering plate, a first reserved groove and the second reserved groove are formed, the tilt angle of the first electric push rod is equal to that of the covering plate, thus when the light roof needs to regulate the drainage speed of water naturally falling onto the top of the light roof, the first electric push rod is started to push a ball so as to jack up rubber skin on the inner side of the first reserved groove, so that the tilt angles of the inner sides of the rubber skin are different, and the purpose that the light roof adjusts the drainage speed can be realized.

The invention belongs to the technical field of land surveying and mapping, and particularly relates to a river depth measuring device for land surveying and mapping. The winding drum is rotationally mounted at the top of the fixed seat; a pair of cotton ropes are arranged, the cotton ropes are wound on the winding drum, and one end of each cotton rope is fixedly connected with the winding drum; the plumb bob is fixedly connected with the other end of the rope; in order to solve the problems that a measuring tool is difficult to keep in a vertical state during measurement in a deep river with urgent water flow, the depth of the river is calculated according to the length read on the measuring tool and the included angle between the measuring tool and the vertical direction when the measuring tool is in an inclined state, but the bottom of the river mostly has a certain gradient, and the measuring tool is inconvenient to measure. And the calculated depth of the river ditch is not accurate. According to the invention, through the arrangement of the pair of ropes, the depth of two points in the river can be measured at the same time, the terrain of the river can be judged, multi-point measurement can be carried out according to the terrain at the bottom of the river, and the depth of the river can be accurately measured.

The invention relates to a connecting structure for a marble pillar trim strip and furniture. The connecting structure for the marble pillar trim strip and the furniture comprises a plate type pillar body assembled to furniture to be connected; two grooves with circular-arc-shaped parallel sections are formed in the left and right sides of an inner surface of a pillar body; the radian of each groove is greater than 180 degrees; the connecting structure further comprises inserting parts which are in inserting march with the grooves; the inserting parts are arranged on the furniture to be connected and the inserting part corresponding to each groove is arranged on one straight line; each inserting part comprises a strip-shaped base plate; two surrounding elastic clamping sections are symmetrically arranged at the left and right ends of each strip-shaped base plate; a certain distance is formed between free ends of the two elastic clamping sections; a mounting hole is formed in the middle of each strip-shaped base plate; the inserting parts are assembled on the furniture by the mounting holes; the inserting parts are arranged into the grooves in an interference inserting manner. By adopting the connecting structure, the furniture can be connected by inserting and damages to the previous furniture are avoided; the furniture is convenient and rapid to mount and replace.

The invention discloses an access control device based on face recognition technology and a method of use thereof. In the field of access control, an access control device based on face recognition technology and a method of use thereof can be used by people with relatively low facial heights. Pulling the handle drives the screen of the facial recognition device to move toward the user's face to complete face recognition. Compared with the existing technology, the maintenance process of the electric slideway is avoided, the cost investment is reduced, and the bending angle of the double-layer bending rod is too large At the same time, the oil outlet end and the bending part of the inner elastic strut are in contact with each other, so that the fixed-point segmented ring at the center line of the double-layer bending rod is stressed and then the double-layer air-sealing bag is squeezed, so that the lubricating oil in it moves along the double-layer The surface of the air-sealing bag overflows and contacts with the center line of the inner elastic strut, achieving the effect of lubricating and maintaining the bending point at a fixed point, thus effectively protecting the bending point of the inner elastic strut from aging and cracking due to bending , effectively reducing the maintenance frequency of the double-layer bending rod.

The invention discloses an air separation type high-stability motor, and belongs to the field of motors. According to the air separation type high-stability motor, through the arrangement of fan-type scales, when the motor operates to generate a large amount of heat, an outer pushing bag is heated to expand so as to push air separation scales outwards, so that the fan-type scales are in a fan-shaped unfolding state. Compared with the prior art, the heat dissipation area in contact with the outside is remarkably increased, so that the heat dissipation efficiency is effectively improved, the stability of the motor is improved, meanwhile, heat on the fan-type scales can be quickly gathered and conducted outwards under the action of the heat conduction chain ropes, and heat dissipation is accelerated. On the other hand, it is effectively guaranteed that the outer pushing bag located on the outer side expands quickly when the motor generates heat, then separation of the two air separation scales when the two air separation scales are heated is effectively guaranteed, in addition, in cooperation with the effect of the magnetic sheets, it can be effectively guaranteed that the separated air separation scales on the two adjacent fan-type scales make contact, then the air flow connectivity between the two fan-type scales is guaranteed, and the heat dissipation efficiency is effectively ensured.