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Preparation method for die plates with different roughness

A roughness and template technology, applied in the field of preparation of templates with different roughnesses, can solve the problems of high preparation cost, complicated process, difficult to popularize in a large area, etc., and achieve the effect of simple operation and low cost

Inactive Publication Date: 2017-11-21
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most methods have the disadvantages of high preparation cost, complex process and difficulty in large-scale promotion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Mix and prepare epoxy resin and curing agent as the base material, take the glass plate as the base plane, scrape the base material evenly on it, and let it stand for 1 min;

[0018] (2) Take a clean and dry glass rod, and wrap a scotch tape about 1 mm thick at both ends;

[0019] (3) Sprinkle silicon carbide particles with a mesh number of 400, 600, 1000, and 1500 on one end of the epoxy resin, and gently push down with a smooth cylinder at a constant speed so that the silicon carbide particles evenly cover the surface of the epoxy resin ;

[0020] (4) Place the glass plate in an oven at 80°C to solidify for 3 hours, take it out, and cool it to room temperature;

[0021] (5) After connecting the air pump with an air gun, blow off the unfixed silicon carbide particles on the surface of the epoxy resin to obtain a template with a rough surface;

[0022] (6) Prepare PVDF coating glue, evenly scrape and coat the coating glue on the surface of the template, put it in ...

Embodiment 2

[0026] (1) Mix and prepare epoxy resin and curing agent as the base material, take the glass plate as the base plane, scrape the base material evenly on it, and let it stand for 1 min;

[0027] (2) Take a clean and dry glass rod and wrap a transparent tape about 2 mm thick at both ends;

[0028] (3) Sprinkle silicon carbide particles with a mesh number of 400, 600, 1000, and 1500 on one end of the epoxy resin, and gently push down with a smooth cylinder at a constant speed so that the silicon carbide particles evenly cover the surface of the epoxy resin ;

[0029] (4) Place the glass plate in an oven at 80°C to solidify for 3 hours, take it out, and cool it to room temperature;

[0030] (5) After connecting the air pump with an air gun, blow off the unfixed silicon carbide particles on the surface of the epoxy resin to obtain a template with a rough surface;

[0031] (6) Prepare PVDF coating glue, evenly scrape and coat the coating glue on the surface of the template, put it...

Embodiment 3

[0035] (1) This embodiment is basically the same as the above-mentioned embodiment 1, the difference is that after the silicon carbide particles are covered on the surface of the epoxy resin, a glass plate or other objects are used to apply downward pressure on the surface of the silicon carbide particles to make the silicon carbide particles Go deeper into the stencil to change the surface roughness of the stencil.

[0036] (2) Different pressures lead to different embedding depths of the template on silicon carbide, so the different pressures applied also affect the surface roughness of the template. Through comparative analysis with Example 1, it is understood that different pressures affect the hydrophobicity of PVDF membranes.

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PUM

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Abstract

The invention provides a preparation method for die plates with different roughness. The preparation method comprises the following steps that 1, epoxy resin and a curing agent are mixedly prepared to serve as a base material, a glass plate or a metal plate serves as a base plane, the base plane is uniformly coated with the base material, and still standing is conducted for 1-5min; 2, the surface of the base material is uniformly paved with silicon carbide particles, and the base material is placed in an oven to be cured for 2-4 h at the temperature of 80 DEG C-110 DEG C; and 3, the base material is cooled to the room temperature after being taken out, and after an air gun is connected with an air pump, the silicon carbide particles which are not cured on the surface of the epoxy resin are blown off, so that the die plates rough in surface are obtained. The preparation method for the rough die plates is based on the theory of lotus leaf effect and can be used for preparing high molecular material films with uniform roughness, so that the high molecular material films have hydrophobicity.

Description

technical field [0001] The invention relates to a method for preparing templates with different roughnesses, which is used for constructing micro-nano rough structures on the surface of bionic lotus leaves on the surface of polymer materials. Background technique [0002] Membrane materials are widely used in many fields due to their advantages of good lighting, various shapes, and good toughness. However, long-term sunlight exposure and external environmental pollution will cause dust to accumulate on the surface of the membrane. Cleaning is dangerous and costly. If the membrane material can have super-hydrophobic self-cleaning properties, the cost of using the membrane material can be reduced. [0003] The surface of the lotus leaf has strong hydrophobic properties. The droplets falling on the surface of the lotus leaf can gather on the leaf surface and roll back and forth. The dust on the leaf surface is carried away by the rolling of the droplets to achieve self-cleaning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/38B29C41/12B29C33/40B29C33/42B05D7/04B29L7/00
CPCB29C41/38B05D7/04B29C33/40B29C33/42B29C41/12B29L2007/00
Inventor 杨文芳李庆梦吴刚王婵铭申庭耀
Owner TIANJIN POLYTECHNIC UNIV
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