Bionic anti-sticking lyophobic and oleophobic pasting film

A hydrophobic and oleophobic, film-sticking technology, applied in the direction of adhesives, film/flake adhesives, etc., can solve the problems of hidden safety hazards, strong penetration, large feature size, etc., to reduce the trouble of cleaning and avoid contamination with oil. , Improve the effect of easy dirty

Inactive Publication Date: 2013-04-03
JILIN UNIV
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Problems solved by technology

However, its characteristic size is large, and it is a first-level non-smooth structure. In actual engineering applications, it can only reduce the viscosity, but the anti-sticking effect is not obvious.
When the size is reduced to nanometers, although it can achie

Method used

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  • Bionic anti-sticking lyophobic and oleophobic pasting film

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Embodiment 2

[0024] Embodiment 2 Automobile non-stick mud sticking film

[0025] According to the requirements of the present invention, a bionic hydrophobic and oleophobic car non-stick film with anti-stick function is designed. First of all, it is necessary to process the hot-pressing mold, which is made of gray cast iron, and use a picosecond laser to process the micro-morphology of hexagonal prism pits on its surface. The radius of the circumscribed circle of the regular hexagon at the bottom of the first-level pit is 80um, the depth of the pit is 50um, and the distribution density of the pit is 50%. According to the calculation of the area occupancy ratio of the convex hull structure, the distance between the structural units of the first-level pit is calculated. The center distance is 200um, and the number of pit units is 25 on the processing surface with a format of 1mmx1mm. The radius of the circumscribed circle of the regular hexagon at the bottom of the second-level pit is 5um, ...

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Abstract

The invention provides a bionic anti-sticking lyophobic and oleophobic pasting film and belongs to the technical field of a polytetrafluoroethylene product. The surface of a thin film layer is provided with a first-grade convex hull type structure and a second-grade convex hull type structure, wherein each convex hull type structure is formed by convex hull structure units; the bottoms of the convex hull structure units are circular, regularly triangular, regularly quadrilateral or regularly hexagonal; and a convex hull is in a bowl shape, a cylinder shape, a cone shape, a triangular prism shape, a quadrangular shape or a hexagonal prism shape. The bionic anti-sticking lyophobic and oleophobic pasting film can be randomly bent, and is used on an irregular surface to convert a previous hydrophilic and oleophilic surface into a lyophobic and oleophobic surface, so that the bionic anti-sticking lyophobic and oleophobic pasting film can be widely applied to fields including automobiles, kitchen utensils, electronic products and the like.

Description

technical field [0001] The invention belongs to the technical field of polytetrafluoroethylene products, and in particular relates to a bionic anti-adhesive hydrophobic and oleophobic film. Background technique [0002] In daily life, due to the short lifespan of car wiper rubber strips, it needs to be replaced frequently; the front and rear fenders and the lower part of the door are easily dirty due to the mud thrown by the wheels in rainy and snowy weather; electronic products are accidentally dropped into the water; kitchen utensils are full of oil and are difficult to clean, etc. A series of questions plagued us. The reason is that the contact angle between water droplets and oil droplets and the surface of the device is small, and the device cannot be well hydrophobic and oleophobic. [0003] The molecular structure of polytetrafluoroethylene is (-CF2-CF2-)n, which is a highly symmetrical non-polar linear polymer material with extremely low surface free energy and high...

Claims

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Application Information

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IPC IPC(8): C09J7/02
Inventor 陈鑫高长凤谢晨张武王怀玉
Owner JILIN UNIV
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