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Preparation of artificial super-wetting lotus-leaf-shaped Janus film

A lotus leaf and artificial technology, which is applied in the field of preparation of artificial super-wetting lotus leaf-shaped Janus films, can solve the problems of cumbersome steps, high cost, and complicated development process

Inactive Publication Date: 2020-10-20
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, domestic related super-wetting materials research and experiment conditions are harsh, and the process is extremely complicated, the steps are cumbersome, and the cost is high, which is not suitable for mass production or industrialized survival.

Method used

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  • Preparation of artificial super-wetting lotus-leaf-shaped Janus film
  • Preparation of artificial super-wetting lotus-leaf-shaped Janus film
  • Preparation of artificial super-wetting lotus-leaf-shaped Janus film

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Embodiment Construction

[0026] specific implementation plan

[0027] The preparation of an artificial super-wetting lotus-leaf-shaped Janus film of the present invention will be specifically described below in conjunction with the accompanying drawings and examples.

[0028] The present invention proposes the preparation of a kind of artificial superwetting lotus-leaf Janus film, specifically comprises several steps:

[0029] (1) PDMS mixed solution, the volume ratio of main agent PDMS and curing agent is 10:1;

[0030] (2) Pour the mixture of (1) into the surface of the silicon wafer, degas for a certain period of time, and cure for a certain period of time at a certain temperature, peel the PDMS elastomer from the surface of the Si wafer, and then cure for 24 hours, and cut into squares;

[0031] (3) Prepare PVB mixed solution;

[0032] (4) Put clean fresh lotus leaves flat on a petri dish, then pour the mixture in (1), dry and solidify to obtain a PDMS template;

[0033] (5) Coat the mixture in...

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Abstract

The invention relates to preparation of an artificial super-wetting lotus leaf-shaped Janus film, in particular to a bionic lotus leaf surface microstructure super-wetting film with a super-wetting surface. The method comprises the following steps: carrying out bionic fine modification on the surface of a cured PDMS elastomer by adopting a soft printing technology and carrying out replication andtranscription twice, so as to prepare the super-wetting Janus film similar to a lotus leaf micro-nano structure. The super-wetting surface is constructed on the surface of the PDMS elastomer in a bionic manner, the super-wetting characteristic of the artificial lotus leaf-shaped surface is simulated, and the prepared Janus film has a nano lotus leaf-shaped super-hydrophilic surface and dodecanol modified super-hydrophobicity. The water contact angles of the super-hydrophobic side and the super-hydrophilic side of the Janus film are respectively greater than 150 degrees and 5 degrees, which indicates that the Janus wettability is prepared on one PDMS elastomer.

Description

technical field [0001] The invention belongs to the technical field of superwetting interface, and in particular relates to the preparation of an artificial superwetting lotus-leaf Janus film. Background technique [0002] Wood is the most precious wealth that nature bestows on human beings. There are many types of wood with different functions. Due to the natural characteristics of wood, its use is very wide. Wood is mainly used in two major fields of engineering and industry, including construction, military industry, vehicles and ships, textiles, wood-based panels, industrial and agricultural tools, furniture, musical instruments, sports equipment, wood products, sleepers, bridges, docks and embankment piles, etc. Wood is a porous and anisotropic natural organic polymer compound, which is easy to decay and insects. When it is used as a coastal building material or a wooden ship, it is often attacked by marine borers. Wood is easy to burn, causing many inevitable fires, e...

Claims

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Application Information

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IPC IPC(8): B29C33/40B29C33/42B29C39/02C08L29/14C08L83/04C08J5/18B29K29/00B29L7/00
CPCB29C33/40B29C33/42B29C39/003B29C39/026B29K2995/0093B29L2007/00C08J5/18C08J2329/14C08J2483/04
Inventor 沈华杰杨玉山王秋华唐艺秦邱坚
Owner SOUTHWEST FORESTRY UNIVERSITY
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