51results about How to "Meet density requirements" patented technology

The invention provides an ultrahigh-elasticity extensible towel and a manufacturing method thereof. The ultrahigh-elasticity extensible towel comprises a ground warp, a ground weft and terry warps, wherein the ground warp is made of a polyester low stretch yarn/ultrahigh-elasticity coarse denier spandex filament wrap yarn to achieve the longitudinal extensible high elasticity of the towel. The polyester low stretch yarn/ultrahigh-elasticity coarse denier spandex filament wrap yarn takes a (140-210)D/(8-12)f ultrahigh-elasticity spandex filament as an inner core; and the polyester low stretch yarn warps the inner core through overfeeding networking. The ground weft is made of a polyester low stretch yarn; and the ground warp and the ground weft are interwoven in a plain weave manner to form a ground stitch. The terry warps are interwoven with the ground weft to form a terry stitch; and the terry stitch forms terry on the outer surface of the ground stitch after the terry stitch is removed from a loom. The terry warps are made of sea island composite superfine polyester yarns. The ultrahigh-elasticity extensible towel provided by the invention has ultrahigh elasticity, can be elastically deformed to different areas to adapt to cleanness and use of different area zones, and is especially suitable for cleaning vehicles.

The invention discloses a method and a system for extending network interfaces, and a method for receiving and sending a message. The method for extending the network interfaces comprises a step of arranging extension ports of switch chips in sequence and storing interface numbers, carrying out registration according to virtual network card equipment, and setting interface names displayed to the external; a step of setting corresponding relations between the extension ports and upper link ports of the extension ports and network interfaces of network equipment according to the interface numbers, and storing the corresponding relations; a step of mapping the extension ports with corresponding VLANs of the virtual network card equipment according to the interface names, mapping the upper link ports of the extension ports, the network interfaces and the VLANs according to the corresponding relations, and storing a VLAN-ID of each VLAN; and a step of each switch chip configuring a double-label mode according to the VLAN-ID and arranging an outer layer label. According to the invention, requirements for the density of network interfaces of different pieces of network equipment can be met, the extension port of each switch chip is an independent internet access, and independent configuration issuing and message receiving and sending can be achieved.

The invention provides a water-stopping sponge rubber material, a preparation method thereof, a sealing strip and a preparation method of the sealing strip and an automobile, the water-stopping spongerubber material is prepared from the following components in parts by weight: 100 parts of ethylene-propylene-diene monomer v8600, 20-30 parts of terpene resin, 20-30 parts of brominated butyl rubber, 6-10 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of polyethylene glycol, 30-50 parts of carbon black HS45, 70-90 parts of R-2291 paraffin oil, 6-10 parts of an OBSH foaming agent, 6-10parts of an AC foaming agent, 5-7 parts of foaming assistant K4-P, 1.5-2.5 parts of sulfur, 7-12 parts of hygroscopic agent CaO and 6-10 parts of an accelerant. The water-stopping sponge rubber material disclosed by the invention has the characteristics of low density, low damping and high viscosity, can be conveniently arranged in a sealing sleeve, has good water stopping performance, and has very good practicability.

A preparation method of a large high density tungsten alloy counterweight is characterized by comprising the steps that: dividing the large counterweight into a plurality of small counterweights with the weight below 50Kg; compounding, by mass, the following components: 91%-95% of tungsten powder, 3.50%-7.5% of nickel powder and 1.0%-3.0% of iron powder; weighing the three kinds of raw material powder, mixing evenly and pressing into a small counterweight blank, then performing liquid phase sintering; processing the connection surfaces of the sintered small counterweights into flat faces, putting one of the small counterweights in a sintering boat, wherein the connection surface maintains horizontal or is vertical to the sintering boat, then putting another small counterweight with the connection surfaces of the small counterweight and the before small counterweight being attached, putting other small counterweights in the same manner, and finally putting all the small counterweights together with the sintering boat into a fixed-point type hydrogen furnace for liquid phase sintering. The large tungsten alloy counterweight prepared by the method is high in density and uniform in structure, the average grain size of the sintered counterweight is 30-50 mum, and the cost is low.

The invention relates to an isoplanar microneedle array and a manufacturing method thereof. The isoplanar microneedle array comprises coplanar microneedles and a base plate, wherein each coplanar microneedle comprises one or more than one needle point and a base which is connected with the needle point, the needle point and the base are in a same plane, and more than two coplanar microneedles are assembled on the base plate. The manufacturing method of the isoplanar microneedle array comprises the steps of utilizing the isoplanar microneedle array as a main die, manufacturing a negative die which can be reused by utilizing a reverse die casting technology, and then manufacturing the isoplanar microneedle array by using the reverse die casting technology again. The isoplanar microneedle array and the manufacturing method which are disclosed by the invention have the beneficial effects that the shape of the needle points of the coplanar microneedles is easily controlled, the quality of the needle points is good, the needle points, the needle shape and the needle length can be ensured by utilizing the microneedle array assembled by multiple coplanar microneedles side by side, and the microneedle density requirement can be met; technologies which are used during a microneedle array manufacturing process are all more mature and are easily realized, the isoplanar microneedle array assembled side by side is just used for the main die which is used for manufacturing the negative die in a reverse die casting way if the technologies are used for batch production, the use times are few, the finished product rate of the coplanar microneedles can be ensured, and the manufacturing cost of the microneedle array is reduced.

The invention belongs to the technical field of wastewater treatment and discloses an intelligent equipment system for recycling mineral processing wastewater and a detection method of the intelligentequipment system. The intelligent equipment system comprises a bacterial detection module, a toxicity detection module, a heavy metal detection module, a main control module, a settlement module, a sterilization module, an electroplating module and a display module. After the heavy metal detection module is flushed by a certain amount of deionized water, flushing fluid is poured into a polytetrafluoroethylene tube, heavy metal ions remained on the inner wall of a test tube can be dissolved in the deionized water, ignoring of the amount of the heavy metal ions remaining on the inner wall of the test tube is avoided, generation of large accidental errors in data is reduced, and detection accuracy is improved; fresh water subjected to treatment of the electroplating module can be recycled directly after detection, and reuse of the wastewater is increased.

A zero-buoyancy optical cable watertight force bearing connector comprises a plug and a socket. The plug comprises a plug housing, a sealing tail sleeve, an O-shaped ring, a sealing assembly, a force bearing assembly and a plug butt-joint assembly. The socket comprises a socket housing, a locking nut, a sealing tail sleeve, a sealing assembly, a force bearing assembly and a socket butt-joint assembly. The plug butt-joint assembly comprises a baffle plate, an MPO optical fiber connector, a plug core and a plug retaining ring. The socket butt-joint assembly comprises an MPO optical fiber connector, an MPO optical fiber flange, a socket core and a socket retaining ring. When integral butt-joint between the plug and the socket is performed by means of a pair of MPO optical connectors through the MPO optical fiber flange, the plug housing is hermetically connected with the socket housing through the locking nut and the O-shaped ring. The zero-buoyancy optical cable watertight force bearing connector has advantages of high mechanical strength, high butt-joint coupling efficiency, high insertion loss consistency, low machining difficulty, low machining cost and long service life. The density of the zero-buoyancy optical cable watertight force bearing connector can approach the density of seawater. The zero-buoyancy optical cable watertight force bearing connector has advantages of greatly reducing resistance in towing and effectively reducing underwater noise of a system.

The invention belongs to the technical field of aero-engine tests, and particularly relates to a preparation device and method of ice for a complete machine ice swallowing test of an aero-engine. Thedevice comprises a temperature control freezer (1), a vacuum barrel (2) and a silica gel mold (5), wherein the vacuum barrel (2) is arranged in the temperature control freezer (1), the vacuum barrel (2) comprises a vacuum barrel body (21) and a vacuum barrel cover (22), a pressure control assembly (3) is installed on the vacuum barrel cover (22), and a partition plate assembly (4) is arranged in the vacuum barrel (2); and the silica gel mold (5) is arranged on the partition plate assembly (4). According to the preparation device of the ice for the complete machine ice swallowing test of the aero-engine, low-density ice can be prepared, the density requirement of ice for the complete machine ice swallowing test in the national military standard is met, the silica gel mold is easy to demoldand not prone to being broken, and the volume loss of the ice is reduced.

The invention belongs to the technical field of preparation of base fertilizers, and discloses an agricultural environmentally-friendly base fertilizer and a preparation method thereof. The preparation method comprises that: a camera device collects video data in the preparation process of the agricultural environmentally-friendly base fertilizer through a camera; a temperature detection device real-timely detects temperature data in the preparation process of the agricultural environmentally-friendly base fertilizer through a temperature sensor; a main control device performs clearness processing on the video by using video processing software through a video processing device; a heating device supplies heating operation in the preparation process of the agricultural environmentally-friendly base fertilizer through a heater; and a weighing device weighs raw materials through an electronic weigher. The base fertilizer prepared by using the preparation method provided by the invention can improve soil and foster soil fertility, increases yield, improves quality, does not generate pollution to the environment, is pollution-free and harmless, improves the quality of a product, reducesharmful accumulation, effectively enhances the fertility of a cultivated land, and improves the nutrient supply environment of the soil.

The invention provides a sealing ring of an integrated circuit. The sealing ring comprises a substrate layer, a doping region, a laminated structure of dielectric layers and metal layers, and a capacitor, wherein the doping region is formed in the substrate layer; the laminated structure of dielectric layer and metal layers is formed on the doping region, and the metal layers and the doping region realize electrical connection through connecting holes; the capacitor is formed in the laminated structure, and a first pole plate and a second pole plate of the capacitor are connected with a substrate and an internal circuit through the metal layers in the laminated structure and metal layers in a buffer region respectively. According to the sealing ring of the integrated circuit provided by the invention, under the condition of not influencing the area of the integrated circuit or changing the function and performance of the sealing ring, the structure of an existing sealing ring of the integrated circuit is improved, so that the integrated circuit meets the density requirement of polycrystalline silicon and adds a filtering performance at the same time.

The invention relates to a low temperature rapid hardening grouting material for an offshore oil well. The low temperature rapid hardening grouting material for the offshore oil well comprises the following raw materials in parts by weight: 2,000 parts of gel materials, 950-965 parts of inorganic mineral active materials, 25-35 parts of retarders, 5-10 parts of anti-freezing ingredients, 3-5 parts of high efficiency slushing agents, and 0.1-0.3 part of defoaming agents, wherein the gel materials are quick-hardening sulphate aluminium cement and oil well cement; the mass ratio of the quick-hardening sulphate aluminium cement and oil well cement is 5:5-8:2. The invention also provides a preparation method thereof. The grouting material is suitable for construction under a well cementation low-temperature environment, slurry can maintain better mobility and is high in early strength, the slurry is full without shrinkage, the long-term strength is high, and the well cementation construction time and the underground grouting environment parameter requirement are effectively ensured.

The invention discloses a figure filler structure inserted about an inductor. The figure filler structure are characterized by a plurality of square metal blocks with the same height as an inductor metal coil, the square metal blocks are inserted in an inside area and an outside area of the inductor metal coil which is positioned on a top metal layer; the side length of the square metal block is equal to a first minimum design rule which is the minimum measurement allowed by the technology; the density of the figure filler structure is not less than a second minimum design rule which is the minimum value for the density of the figure filler structure; the distance between the square metal blocks can be any measurement value in the scope from a third minimum design rule to the maximum distance value which is the distance between the square metal blocks when the density of the figure filler structure is equal to the second minimum design rule; and the third minimum design rule is the minimum distance between metals allowed by the technology. The invented structure effectively enhances the quality factor of inductor.

The invention discloses a method for heating and melting a precast shaped filler in sapphire crystal growth, which comprises the following steps: starting a heating system to heat from 25 DEG C to 1650 DEG C, wherein the heating gradient is 200 DEG C/h; and after the temperature reaches 1650 DEG C, changing the temperature increase gradient to 30 DEG C/h, and further heating to 2000 DEG C until a block material is completely molten. The precast shaped filler disclosed by the invention causes less bubble defects in comparison with a crystal block treated by a flame method; the packed density of the precast shaped filler can be up to 2.6-2.8 g/cm<3>; and more materials can be filled under the condition of not changing the size of a crucible, thereby meeting the requirements for the density of the raw material in large-size sapphire crystal growth in China at present.

The invention discloses a multi-point pressurizing device for controlling layer density and uniformity of a complex surface stitched fabric. The device comprises a male mold, a female mold and a multi-point pressurizing component, wherein the multi-point pressurizing component comprises an arched bracket and a pressurizing component; the arched bracket is arranged at the outer periphery of the female mold; the pressurizing component comprises a screw rod, a rotating handle and a rubber pad; the screw rod is in threaded connection to the arched bracket; one end of the screw rod penetrates through the arched bracket to extend to the outer surface of the female mold, and the other end is left outside the arched bracket; the rotating handle is connected to one end, left outside the arched bracket, of the screw rod; and the rubber pad is arranged at the end part of one end, extending to the outer surface of the female mold, of the screw rod. The multi-point pressurizing device for controlling the layer density and the uniformity of the complex surface stitched fabric is simple in structure, is easy to be machined and assembled, is convenient for use, and can effectively control the layer density and the uniformity of the complex surface three-dimensional fabric to improve the quality of the complex surface stitched fabric.

The invention discloses a corrosion-resistance high-specific gravity titanium alloy sphere and a manufacturing method thereof. The sphere is prepared by coating a pure titanium or titanium alloy material on a shot surface layer; the wall thickness of the pure titanium or the titanium alloy outside of the metal shot is more than 2mm. The manufacture method thereof is as follows: the shot is fixedly arranged in the spherical center of a black lead die; drilling is correspondingly carried out on the shot and the black lead wall one by one and pure titanium or titanium alloy wires are used for connection; then the titanium alloy material is molt and cast; finally a sphere cast is processed so as to meet demands. The sphere of the invention has a density approaching to a steeliness sphere which can meet the density demands of the sphere; the sphere has the corrosion resistance and eroding resistance performances equivalent to the pure titanium or titanium alloy, can improve the service life of a sphere in a floating valve used for a boat, and enhance the reliability of a floating device. The application prospect of the invention is good and the economic benefit is obvious.

The invention provides a preparation method of a self-lubricating copper-based powder metallurgy structural part for a helicopter. The preparation method comprises the steps that 1, copper metal powder, tin metal powder, graphite and paraffin are selected according to the requirements of the structural part; step 2, copper and tin metal powder are fully and uniformly mixed with graphite and paraffin to obtain uniformly mixed powder; and step 3, the uniformly mixed powder is pressed into a green body by adopting isostatic cool pressing, and the green body is sintered in an H2 protective atmosphere. By adding the graphite, the self-lubricating property of the structural part can be improved; and paraffin is added, it can be guaranteed that graphite with the large density difference is uniformly mixed with copper and tin metal powder, the influence of component segregation caused by the density difference can be eliminated, and the density requirement is met.

The invention discloses a machining process of a wind power bearing sealing rubber strip, which is made of oil and weathering ageing resistant rubber. The machining process comprises the following steps of: filtering mixing rubber materials by using a filter screen and ensuring that the rubber materials are free of impurities; matching mouthpieces by using an extruder so as to pre-form the rubbermaterials and ensuring the sizes of the rubber materials so as to satisfy the weight requirement; preheating the pre-formed mixing rubber materials so as to increase the fluidity; dragging the pre-formed rubber materials to each die cavity by using a fixture and putting neatly; carrying out die assembly and vulcanization molding; and trimming the vulcanization molded products and removing the rough edges so as to obtain the wind power bearing sealing rubber strip which satisfies the assembling requirement. Through the invention, the quality of the sealing rubber strip can be improved and the quality stability can be ensured.

The invention relates to a large-section stranded conductor. The large-section stranded conductor comprises a coaxially arranged strengthening core and a conductor formed by a semi-hard aluminum stranded wire layer, the strengthening core is formed by twisting a plurality of strands of wires which are made of a carbon fiber composite material; and the semi-hard aluminum stranded wire layer is a multi-layer structure formed by stranding semi-hard aluminum single wires, and the sections of the semi-hard aluminum single wires are circular. The large-section stranded conductor provided by the invention is high in strength, corrosion resistant, large in current-carrying capacity, small in linear expansion coefficient, small in sag and light in weight, can meet the higher requirements of energyconservation and environmental protection in the field of overhead power transmission; and moreover, the semi-hard aluminum stranded wire layer adopts semi-hard aluminum, so that the conductivity is greatly improved compared with that of a common hard aluminum wire, the resistivity is improved by about 3% compared with that of a hard aluminum monofilament, and the power transmission loss is effectively reduced, so that the large-section stranded conductor has important economic benefits and social benefits for constructing an intelligent power grid, achieving 'clean substitution' and promotingenergy conservation and environmental protection.

The invention discloses a method for rapidly forming an amine group on the surface of a material, a medical material with a surface loaded with a high-density amine group and an application of the medical material, and relates to the technical field of medical materials. The method for rapidly forming the amine group on the surface of the material comprises the steps that the to-be-loaded materialis subjected to standing in an alkaline solution to obtain an alkali-activated material; the alkali-activated material reacts with a PAMAM-NH2 solution for 5min-24h. The medical material with the surface loaded with the high-density amine group comprises the to-be-loaded material, the surface of the to-be-loaded material is loaded with PAMAM-NH2, and the medical material can be prepared through the method. The preparation method is simple and easy to operate, the reaction time is short, the density of the amine groups on the surface of the material can be effectively controlled, and the requirements of different amine group densities on the surface of the material can be met.

The invention belongs to the technical field of high polymer materials, and relates to a polyformaldehyde material, a preparation method and application of the material. The polyformaldehyde material is prepared from the following ingredients in parts by weight: 100 parts of polyformaldehyde, 100-230 parts of zinc oxide, 0.1-0.2 part of white oil, 0.5-1 part of calcium stearate, 0.3-0.6 part of a primary antioxidant, 0.3-0.6 part of an auxiliary antioxidant, 0.5-0.8 part of a formaldehyde absorbent, 0.1-0.3 part of a nucleating agent, and 5-15 parts of hollow glass. Compared with the prior art, the prepared material is high in density, low in percentage of contraction, uniform in mass distribution, good in surface quality, high in whiteness, good in rigidity, and excellent in tenacity.