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85results about How to "Improve binding tightness" patented technology

Graphene/carbon nanotube network flexible multifunctional strain sensor preparation method

The invention discloses a three-dimensional graphene/carbon nanotube network flexible multifunctional strain sensor preparation method. According to the invention, the three-dimensional network of three-dimensional graphene and a one-dimensional carbon nanotube grows through two-step chemical vapor deposition; and the three-dimensional network and an elastic polymer as a flexible substrate are solidified and combined to acquire a flexible wearable multifunctional electronic strain sensor based on the three-dimensional network of the graphene and the carbon nanotube. According to the invention, the electronic strain sensor breaks the limitation relationship between the strainability and the sensitivity of the strain sensor, has an excellent electronic strain sensing performance and the function of a micro heater, realizes high sensitivity detection of human physiological signals and physical activities, shows excellent electronic skin simulation capabilities and a micro heating source application performance, has the advantage of simple process, and can be widely used in many fields such as clinical diagnosis, health monitoring, a robot, an electronic screen, electronic skin, a flexible micro heater and intelligent home.
Owner:NANJING UNIV OF TECH

Automatic article depositing-withdrawing machine and use method thereof

The invention designs an automatic article depositing-withdrawing machine and a use method of the automatic article depositing-withdrawing machine, to solve the technical problem that a delivery man must contact with a recipient face to face when delivering. The machine provided by the invention comprises a box body and a main computer arranged in the box body, wherein the outer surface of the box body is provided with an input device connected with the main computer through signal transmission; the box body is provided with a plurality of storage cabinets with doors; each storage cabinet is provided with an automatic door opening device electrically controlled by the main computer; and the main computer is provided with a network module. The machine provided by the invention is rational in layout, and reaches the purpose of automatically depositing and withdrawing the articles, avoids the face-to-face contact between the delivery man and the recipient, saves the time of the delivery man and improves the working efficiency; the machine provided by the invention helps the recipient to automatically schedule to take away the articles; the machine provided by the invention runs stably, mistakes are not easily made, the machine provided by the invention detects the storage cabinets and door locks of the storage cabinets in real time so as to avoid missing the articles and prevent the doors from being unlocked in time.
Owner:HANGZHOU CHIDA INFORMATION TECH

Graphene oxide modified PA (polyamide) composite nanofiltration membrane and preparation method thereof

The invention discloses a graphene oxide modified PA (polyamide) composite nanofiltration membrane and a preparation method thereof. The method comprises steps as follows: preparing a PA ultrafiltration basement membrane; preparing an aqueous amino graphene oxide solution; adding a crosslinking agent to the prepared aqueous amino graphene oxide solution to prepare an amino graphene oxide crosslinking solution; dip-coating the PA ultrafiltration basement membrane with a layer of the amino graphene oxide crosslinking solution with a surface coating method firstly, then coating the PA ultrafiltration basement membrane with a layer of a PA ultrafiltration membrane casting solution to prepare the graphene oxide modified PA composite nanofiltration membrane. A large quantity of free carboxyl andhydroxyl exist on the membrane surface, so that the graphene oxide modified PA composite nanofiltration membrane has the characteristics of high hydrophilcity and high throughput; meanwhile, due to the crosslinking reaction between amino graphene oxide and a PA basement membrane, tightness can be improved; the membrane surface is negatively charged, so that desalinization rate can be effectivelyincreased, and throughput and desalinization effect of the nanofiltration membrane are improved; the technical scheme has large-scale industrial application and popularization prospect.
Owner:NANJING POLYTECHNIC INSITUTE

Electronic substrate, connector assembly and manufacturing method of electronic substrate

The invention discloses an electronic substrate. The electronic substrate comprises a polytetrafluoroethylene base layer and a plurality of conductive strips arranged on the polytetrafluoroethylene base layer, each conductive strip is provided with a first surface and a second surface which are opposite up and down, wherein at least one groove is concavely formed from the second surface to the first surface; the grooves do not penetrate through the conductive strips in the vertical direction; the grooves extend along the front-back direction, the polytetrafluoroethylene base layer partially fills the grooves, the groove walls of the grooves are provided with at least one stopping surface, the stopping surface prevents the part, filling the grooves, of the polytetrafluoroethylene base layerfrom being separated from the conductive strips in the direction opposite to the concave direction of the grooves, and a conductive path of the conductive strip is defined to transmit signals in thefront-back direction. Compared with the prior art, the polytetrafluoroethylene material and the conductive material in the electronic substrate are tightly combined, loss can be reduced when signals are transmitted on the conductive strip, and transmission is stable.
Owner:DEYI PRECISION ELECTRONIC IND CO LTD PANYU

Finned tube heat exchanger and application thereof and afterheat boiler

The invention relates to the technical field of heat exchangers, and discloses a finned tube heat exchanger and application thereof and an afterheat boiler. The finned tube heat exchanger belongs to a radial heat transfer heat tube, and has the advantages of high heat transfer efficiency, short axial length, small size and light unit heat exchange weight; a sucking core has no need to be arranged in the tube; and inner tube fins of a first layer of inner tubes can be used for guiding condensed water to flow onto the inner walls of outer tubes to absorb heat for evaporation, so that the whole inner walls of the outer tubes become the heat absorption evaporation surface area of phase change liquid. The finned tube heat exchanger is applied to industrial afterheat, can reduce industrial pollution, and also can fully use the industrial afterheat; and the industrial afterheat is secondarily converted to energy for recycling by human. The afterheat boiler adopts the finned tube heat exchanger consisting of heat tubes to recover heat; the finned tube heat exchanger is small in size, and can be flexibly arranged on a flue; and the heat tubes belong to radial heat transfer, so that the heat exchange area with waste smoke in the flue is largely increased, and the heat exchange efficiency is improved.
Owner:HUNAN UNIV OF TECH

Method for manufacturing forming fabric for warp connection paper making

The invention discloses a method for manufacturing forming fabric for warp connection paper making. The manufacturing process of the forming fabric comprises the following steps of filament detection, beaming, mesh weaving, mesh inspection, primary sizing, mesh cutting, insertion, secondary sizing, finished-product inspection, packaging and storage. When a mesh is weaved, three system warps and two system wefts are interwoven, wherein independent let-off of the three system warps is conducted through three let-off shaft systems. Tension of the three system warps is controlled by three corresponding let-off shaft systems, so that a surface layer mesh is firmly connected with a bottom layer mesh, combination compactness is good, a single filament in a mesh body has no inner friction, and the layering problem in the use process of the forming fabric is solved. A first system warp and a third system connection warp interweave with a first system weft to form the surface layer mesh for supporting paper sheet fibers, surface evenness is good, and a paper sheet has not filament marks. A second system warp and a third system connection warp interweave with a second system weft to form the bottom layer mesh for being resistant to abrasion of a paper machine. Abrasion-resistant performance is good, and a service life is long.
Owner:安徽华辰造纸网股份有限公司

Cementitious material precise distribution and dense operation robot

The invention discloses a cementitious material precise distribution and dense operation robot which comprises a main body, a running gear, a pipe frame, a material distributing pipe, an extending-retracting mechanism and a vibrator, wherein the running gear is arranged in the main body to drive the entire cementitious material precise distribution and dense operation robot to move; the pipe frameis fixed on the main body; the material distributing pipe is mounted on the pipe frame and extends downwards; the extending-retracting mechanism is arranged on the pipe frame and controls the material distributing pipe to retract or put down relative to the pipe frame; the vibrator is fixed on the material distributing pipe to drive the material distributing pipe to vibrate; a feeding port is further formed in the base; and the cementitious material precise distribution and dense operation robot is further provided with a feeding passage communicating between the feeding port and the materialdistributing pipe. The cementitious material precise distribution and dense operation robot vibrates through changing the pouring manner while pouring to improve the concrete material combining compactness and ensure the quality of a wall component, can automatically finish wall pouring forming to improve the operation automation and liberate labor force, and is suitable for being popularized inthe construction industry.
Owner:广东山众建筑科技有限公司

Method for regenerating abraded punch-die in car part punch die

ActiveCN103273254ASave costsSave processing cycleFilling materialsAlloy
The invention discloses a method for regenerating an abraded punch-die in a car part punch die. The method for regenerating the abraded punch-die in the car part punch die includes the following steps. Firstly, with the hot dip technology, a tombarthite zinc-aluminum alloy clad layer is formed in an abraded part of the punch-die. Secondly, filled materials are heated and molten and then coated in the abraded part of the punch-die. Thirdly, the regeneration position of the abraded part of the punch-die is made flat and smooth through mechanical machining. According to the method for regenerating the abraded punch-die in the car part punch die, combination capacity of the filled materials and the surface of the die can be favorably improved by forming a transition layer in the hot dip technology. The optimized filled materials can play a good role of combining and meet the requirement for high mechanical rigidity so that the regenerated punch-die has better firmness and strength in order to achieve the effect of regenerating the abraded punch-die. With the technology, manufacturing and fixing cost and a machining period of the punch die are greatly reduced, reliability of the regenerated punch-die is improved and the method for regenerating the abraded punch-die in the car part punch die provides a novel way of thinking and a novel method for an existing technology.
Owner:安徽振华汽车部件有限责任公司
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