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Bionomic damping surface and manufacturing method thereof

A manufacturing method and sintered layer technology, applied in the field of drag reduction structures, can solve the problems of complex drag reduction effects of active drag reduction equipment, active input energy and unsatisfactory drag reduction effects, etc., to achieve wide range of applicable equipment and low manufacturing cost Low, high precision effect

Active Publication Date: 2021-06-22
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing research shows that drag reduction technology is mainly divided into active drag reduction and passive drag reduction according to whether there is energy input or not. Among them, active drag reduction requires active input of energy and the drag reduction effect is not ideal, and the active drag reduction equipment is complicated. and poor drag reduction

Method used

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  • Bionomic damping surface and manufacturing method thereof
  • Bionomic damping surface and manufacturing method thereof
  • Bionomic damping surface and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this embodiment, a machining center is used to manufacture a graphite mold with a pit structure, which is used as a negative template for a drag-reducing / anti-fouling plate, and the nano-copper powder is sintered by a sintering process, and then PDMS / SiO is configured 2 As a filler, a composite anti-fouling / drag-reducing surface with controllable surface shape and size, flexible, hydrophobic and wear-resistant, such as figure 1 , the surface hydrophobicity test such as Figure 4 .

[0046] Step 1): use the machining center to process the template of the conical pit with a height of 0.3mm and a bottom diameter of 1mm through the steps of milling, drilling and fine grinding, and use the method of vibration and compaction to mix the nano-copper powder (50- 200nm) to fill the graphite mold, use a scraper to remove excess powder and ensure that the edge of the mold is clean. Take a metal copper sheet whose length and width are equal to the size of the mold, use an ultra...

Embodiment 2

[0051] In this example, a machining center is used to manufacture a graphite mold with a pit structure, which is used as a negative template for a drag-reducing / anti-fouling plate. The nano-copper powder / calcium carbonate is sintered into shape by a sintering process, and then PDMS / graphite powder is configured. As a filler, a composite anti-fouling / drag-reducing surface with black surface color, controllable size, flexibility, hydrophobicity and wear resistance is prepared.

[0052] Step 1): adopt the machining center to process the template of conical pits with a height of 0.3mm and a diameter of 1mm through the steps of milling, drilling and fine grinding, and configure nano-copper powder (100-200nm ) / calcium carbonate mixed powder, the mixed powder is filled into the graphite mold by vibration and compaction, the excess powder is removed by a scraper and the edge of the mold is kept clean. Take a metal copper sheet whose length and width are equal to the size of the mold, ...

Embodiment 3

[0064] In this example, a machining center is used to manufacture a graphite mold with a pit structure, which is used as a negative template for a drag-reducing / anti-fouling plate. The nano-copper powder / calcium carbonate is sintered into shape by a sintering process, and then PDMS / graphite powder is configured. As a filler, a composite anti-fouling / drag-reducing surface with black surface color, controllable size, flexibility, hydrophobicity and wear resistance is prepared.

[0065] Step 1): adopt the machining center to process the template of conical pits with a height of 0.3mm and a diameter of 1mm through the steps of milling, drilling and fine grinding, and configure nano-copper powder (100-200nm ) / calcium carbonate mixed powder, the mixed powder is filled into the graphite mold by vibration and compaction, the excess powder is removed by a scraper and the edge of the mold is kept clean. Take a metal copper sheet whose length and width are equal to the size of the mold, ...

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Abstract

The invention discloses a bionic damping surface and a manufacturing method thereof. The bionic damping surface comprises a base plate, a sintering layer and a flexible layer which are sequentially arranged from bottom to top, wherein the sintering layer and the flexible layer forms a convex structure; and a nano particle filling transition layer is arranged between the sintering layer and the flexible layer. A sintering technology is combined with micro-structure transfer printing to realize a surface with a damping / anti-fouling function. The method can precisely manufacture a flexibly-packaged micro bulged double-layer damping surface. A sintering form and filling improvement PDMS make the surface have self-healing and wear resistance. The bionic damping surface has a wide application prospect, has unique advantages of a simple process, low manufacturing cost, high production efficiency and repeatability. The invention provides a brand-new solution for manufacturing an anti-fouling / damping surface.

Description

technical field [0001] The invention relates to a drag reducing structure, in particular to a drag reducing structure and a manufacturing method thereof. Background technique [0002] In recent years, the energy shortage has become increasingly severe, and the research on drag reduction performance has become an important topic, and underwater drag reduction is the direction that researchers are constantly pursuing optimization. Existing research shows that drag reduction technology is mainly divided into active drag reduction and passive drag reduction according to whether there is energy input or not. Among them, active drag reduction requires active input of energy and the drag reduction effect is not ideal, and the active drag reduction equipment is complicated. And poor drag reduction effect. In the early days, it was found that the rough surface has better drag reduction performance, breaking the traditional concept that the smoother the drag reduction effect, the bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/04B22F3/11B22F3/26B29C70/64
CPCB22F7/004B22F3/11B22F3/26B29C70/64Y02T70/10
Inventor 田桂中范东亮冯晓明张耀升石晋孙鹏飞周宏根
Owner JIANGSU UNIV OF SCI & TECH
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