8results about How to "Increased contact surface area" patented technology

The application belongs to the technical field of copper foil and particularly relates to a copper wire forming device, which comprises a spraying part provided with a liquid spraying opening, the spraying part being capable of spraying a drawing liquid to the copper wire through the liquid spraying opening; and an extrusion assembly arranged on one side of the spraying part, the extrusion assembly being capable of forming a protrusion on the surface of the copper wire sprayed with the drawing liquid. The application can relieve the drawing stress by spraying the drawing liquid before the protrusion is formed on the surface of the copper wire, so as to avoid the rupture of the copper wire and ensure the continuity of the copper wire winding disc.

The invention relates to the field of paint spraying, in particular to a curved surface paint spraying boundary technology which comprises the following steps that S1, a first color layer is sprayed to a curved surface structure; s2, removing the first color layer on the second side of the color block boundary; s3, spraying a release interlayer on the curved surface structure, wherein the release interlayer is sprayed on the second side of the color block boundary and the surface of the first color layer; s4, removing the release interlayer on the second side of the color block boundary; s5, spraying a second color layer on the curved surface structure, wherein the second color layer is sprayed on the second side of the color block boundary and the surface of the release interlayer; and S6, removing the release interlayer so as to remove the second color layer sprayed on the surface of the release interlayer, and respectively forming a first color block and a second color block on the first side and the second side of the color block boundary. The multi-color paint spraying device has the effect of conveniently carrying out boundary multi-color paint spraying on the curved surface structure.

This invention provides a method for fabricating a CNTs / PDMS microstructure triboelectric nanogenerator, comprising the following steps: PCL particles are poured into the barrel of a 3D printing device and formed onto a printing receiver plate side by near-field direct writing and fused deposition modeling to obtain a PCL film with two patterns; a mixture of PDMS and a curing agent is stirred, carbon nanotubes are added and stirred further, followed by ultrasonication to obtain a mixed solution; the mixed solution is coated onto the PCL film, followed by vacuum treatment; the film is heated and dried to obtain a dielectric layer; the PCL on the film surface is removed to obtain a CNTs / PDMS dielectric layer; a copper foil is covered on the smooth surface of the dielectric layer as one end electrode, a PET layer is attached as a protective layer, and the other side is covered with copper foil to obtain another electrode; PET is then placed on top, and wires are led out from the two electrodes to connect to a load, thus obtaining the nanogenerator. This invention provides a method for fabricating a nanogenerator with low fabrication requirements and capable of producing nanogenerators with good overall performance.

The utility model relates to mould technical field, and disclose a kind of calcium silicate cement board production forming mould, comprising: base and two pieces of side stop, side stop is detachably connected with base and forms a frame body on the top of base, and casting cavity is formed inside frame body;Cooling structure, set in the inside of base for cooling base and cement board, cooling structure includes heat dissipation cavity, water inlet pipe and reflux pipe, heat dissipation cavity is opened in the inside of base, water inlet pipe and reflux pipe are fixedly connected with base and communicate with heat dissipation cavity, water inlet pipe is connected water source, by connecting water source to water inlet pipe, reflux pipe connects water pool, water pump can be set in water pool, water circulation is realized by water pump to water inlet pipe, radiator and other cooling components still need to be set in water pool, not repeated here, by the water of circulation, heat of base and cement board bottom is taken away, improve the heat dissipation speed of cement board bottom, inhibit cement board bottom heat accumulation, reduce the probability that cement board quality is influenced due to temperature difference too large.

The utility model discloses an inner octagonal pipe belongs to pipe material technical field, including the pipe body of octagonal structure, the inner chamber of pipe body also is octagonal structure, the pipe body includes work section, flared connecting section and embedded connecting section, is equipped with the transition section between work section and flared connecting section, and flared connecting section and transition section are located one end of work section, and embedded connecting section is located the other end of work section, flared connecting section, transition section work section and embedded connecting section integrated molding. The pipe body of octagonal structure in the utility model, compared with the circular pipe body, has increased the contact surface area between pipes, and is more stable in storage and transportation, is convenient for safe stacking, and the contact pressure between pipes is small, and the pipe is not easy to deform, the pipe cavity of octagonal shape, and the traditional circular pipe cavity of same inner diameter is greater than the pipe cavity capacity, and the drainage capacity is increased, the first wave crest on work section M type or n type increases the surface area of contact with the outside, and the pressure intensity that the pipe body receives reduces, and the service life is improved.

The utility model discloses a lead frame, including a plurality of parallelly arranged frame groups, and each frame group includes two frame units, and each frame unit includes a carrier area, and four pins located below the carrier area, the carrier area is divided into left carrier area and right carrier area, and the four pins are same in size and are commonly connected with middle ribs, and the two middle ribs of each frame group are equipped with connecting ribs, and the two frame units of each frame group are centrally symmetric with the center of connecting rib as the symmetry center, and the four pins of one frame unit are staggered with the four pins of another frame unit. The two frame units of each frame group are centrally symmetric with the center of connecting rib as the symmetry center, and the four pins of one frame unit are staggered with the four pins of another frame unit, so that the gap between the pins is fully utilized, thereby making the arrangement of the frame unit more compact, the material utilization rate of the lead frame is higher, and the waste of materials is reduced.

The utility model discloses a salient point structure and a point coating plate roller, the point coating plate roller comprises a roller body and a plurality of salient points uniformly distributed on the surface of the roller body, each salient point is a salient point structure, each salient point structure comprises a bulge, and an annular groove is formed on the circumferential surface of each bulge. The grooves with the salient point structures can also bear slurry, so that liquid carrying does not depend on tension completely, and when the equipment runs at a high speed, the liquid carrying amount is increased, coating point deformation caused by inertia is reduced, the coating requirement is met, the running speed of the equipment is increased, and the productivity is improved; and the coverage rate of the point coating plate roller has a relatively wide adjusting range.