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A method of preparing superhydrophobic polymer surface by thermal spraying template method

A polymer, thermal spraying technology, applied in coating, melt spraying, metal material coating process and other directions, can solve the problems of limited superhydrophobic surface area, insufficient membrane strength, expensive equipment, etc., to achieve easy large-area preparation, Environmentally friendly and reproducible, low-cost effects

Inactive Publication Date: 2016-01-20
无锡市耐密特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, these methods all have some shortcomings, such as the steam-induced phase separation method may have the disadvantage that the membrane strength is not good enough
Laser and plasma etching methods are expensive, costly, and have limited superhydrophobic surface area, so they are limited in practical application.

Method used

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  • A method of preparing superhydrophobic polymer surface by thermal spraying template method
  • A method of preparing superhydrophobic polymer surface by thermal spraying template method
  • A method of preparing superhydrophobic polymer surface by thermal spraying template method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Step 1: Place a thermal spray stencil on a flat substrate.

[0041] The plane base is a high temperature resistant material, and the high temperature resistant material in this embodiment is an aluminum plate. The microstructure morphology of the thermal sprayed template is as follows: figure 1 shown. The substrate of the thermal spraying template is made of stainless steel, and the surface spraying particles of the thermal spraying template are made of cemented carbide. In this embodiment, the cemented carbide is selected from tungsten carbide with a particle size of 20um. The body is made of nickel powder. from figure 1 It can be seen that the template is a micro-nano composite structure, which forms a micro-nano composite structure on the printed polymer surface after thermal transfer, and this structure is the basic condition for forming a super-hydrophobic surface.

[0042] Step 2: Lay a layer of polypropylene sheet on the thermal spray template, polypropylene ...

Embodiment 2

[0045] Step 1: Place a thermal spray stencil on a flat base substrate.

[0046] The plane base is a high temperature resistant material, and the high temperature resistant material in this embodiment is an aluminum plate. The microstructure morphology of the thermal sprayed template is as follows: figure 1shown. The substrate of the thermal spraying template is aluminum alloy, and the surface spraying particles of the thermal spraying template are selected from cemented carbide. In this embodiment, the cemented carbide is tungsten carbide, and the particle size is 30um. The body is nickel powder. It can be seen that the thermal spray template is a micro-nano composite structure, which forms a micro-nano composite structure on the printed polymer surface after thermal transfer, and the micro-nano composite structure is the basic condition for forming a super-hydrophobic surface.

[0047] Step 2: Lay a layer of polypropylene sheet on the thermal spray template, polypropylene ...

Embodiment 3

[0051] Step 1: Place a thermal spray stencil on a flat substrate.

[0052] The plane base is a high temperature resistant material, and the high temperature resistant material in this embodiment is an aluminum plate. The thermal spraying template is placed on the aluminum substrate, and the microstructure of the thermal spraying template is as follows figure 1 shown. The substrate of the thermal spraying template is made of stainless steel, and the particles sprayed on the surface of the thermal spraying template are made of cemented carbide. In this embodiment, the cemented carbide is tungsten carbide, and the aluminum plate and tungsten carbide powder are bonded by a bonding body, which is nickel powder. . It can be seen that the template is a micro-nano composite structure, which forms a micro-nano composite structure on the printed polymer surface after thermal transfer, and the micro-nano composite structure is the basic condition for forming a super-hydrophobic surface...

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Abstract

The invention discloses a method for preparation of a superhydrophobic polymer surface by a thermal spraying template process. The method includes: firstly placing a thermal spraying template on a flat substrate; then hot-pressing a polymer on the thermal spraying template, and controlling the hot-pressing temperature to make the polymer surface reach a viscous flow state; and finally, under a temperature lower than the viscous flow temperature of the polymer, separating the thermal spraying template from the polymer, thus obtaining the superhydrophobic polymer surface. The method provided by the invention has the advantages of simple operation process, low cost, good environmental friendliness and repeatability, is easy for large area preparation and is easy to combine with a casting technology, thus having important engineering application value.

Description

technical field [0001] The invention belongs to the field of surface modification of polymer materials, and more specifically relates to a method for modifying the surface of polymer materials by using a thermal spray template method. Background technique [0002] At present, there are mainly the following superhydrophobic modification methods for the surface of metal substrate materials: (1) steam-induced phase separation method, polystyrene-b-dimethylsiloxane dissolved in dimethylformamide (DMF) The alkane copolymer (PS-b-PDMS) was coated in an environment with a relative humidity of 60% to obtain a superhydrophobic surface. (2) Laser and plasma etching methods, using CO at room temperature 2 Pulsed laser treatment of polydimethylsiloxane (PDMS), the surface of which has a WCA of up to 175°; LDPE film was treated with plasma under an oxygen atmosphere, and then resurfaced on CF 4 Under the atmosphere, plasma treatment is used to obtain a super-hydrophobic LDPE film with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/00C23C4/10C23C4/06
Inventor 杨得全万方侯远
Owner 无锡市耐密特新材料有限公司
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