Preparation method of porous super hydrophobic polypropylene film

A polypropylene film, super-hydrophobic technology, applied in the field of organic polymer polymer materials and their preparation, to achieve the effects of easy industrialization, good reproducibility, and simple operation process

Inactive Publication Date: 2011-08-31
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these existing methods either use expensive materials, or require special processing equipment or complex processes, making it difficult to industrialize

Method used

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  • Preparation method of porous super hydrophobic polypropylene film
  • Preparation method of porous super hydrophobic polypropylene film
  • Preparation method of porous super hydrophobic polypropylene film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A porous super-hydrophobic polypropylene film of the present invention, the pore size distribution range of the surface of the porous super-hydrophobic polypropylene film is 100nm to 10 μm, the average pore size is 1 μm, and the contact angle between the surface of the porous super-hydrophobic polypropylene film and water is 158° ±1.9°, the rolling angle of water droplets on the surface of the porous superhydrophobic polypropylene film is 3°, and the thickness of the porous superhydrophobic polypropylene film is 0.2mm.

[0024] The above-mentioned porous superhydrophobic polypropylene film of this embodiment is prepared by the following steps: first, weigh 500g of polypropylene particles and 100g of polystyrene particles, and then weigh the polypropylene particles and polystyrene particles in the Mix the materials uniformly at 180°C for 30 minutes in the mixer, and then make the uniformly mixed mixture on the calender at 200°C to make a film semi-finished product with a ...

Embodiment 2

[0026] A porous super-hydrophobic polypropylene film of the present invention, the pore size distribution range of the surface of the porous super-hydrophobic polypropylene film is 100nm to 10 μm, the average pore size is 800nm, and the contact angle between the surface of the porous super-hydrophobic polypropylene film and water is 156° ±1.8°, the rolling angle of water droplets on the surface of the porous superhydrophobic polypropylene film is 5°, and the thickness of the porous superhydrophobic polypropylene film is 0.3mm.

[0027] The porous superhydrophobic polypropylene film of the above-mentioned present embodiment is prepared by the following steps: first, weigh 8 kg of polypropylene particles and 1 kg of polystyrene particles, and then weigh the polypropylene particles and polystyrene particles in the Mix the materials uniformly at 200°C for 60 minutes in the mixer, and then use the extruder at 200°C to make the uniformly mixed mixture into a film with a thickness of ...

Embodiment 3

[0029] A porous superhydrophobic polypropylene film of the present invention, the pore size distribution range of the surface of the porous superhydrophobic polypropylene film is 500nm to 5 μm, the average pore diameter is 1 μm, and the contact angle between the surface of the porous superhydrophobic polypropylene film and water is 159° ±1.6°, the rolling angle of water droplets on the surface of the porous superhydrophobic polypropylene film is 3°, and the thickness of the porous superhydrophobic polypropylene film is 0.01mm.

[0030] The above-mentioned porous superhydrophobic polypropylene film of this embodiment is prepared by the following steps: first, weigh 1.5kg of polypropylene particles and 200g of polystyrene particles, and then weigh the polypropylene particles and polystyrene particles Mix the materials uniformly in the mixer at 210°C for 60 minutes, and then use the tape casting method at 200°C to make the uniformly mixed mixture into a 0.01mm thick mixture of pol...

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Abstract

The invention discloses a porous super hydrophobic polypropylene film and a preparation method thereof. The aperture distribution range on the surface of the porous super hydrophobic polypropylene film is 100 nanometers to 10 micrometers, the average aperture is 650 nanometers to 1 micrometer, a contact angle of the surface of the film with water is 150-165 degrees, and roll angles of water dropson the surface of the film are below 5 degrees. The preparation method comprises the following steps of: uniformly mixing polypropylene granules and polystyrene granules in a mixer according to a mass ratio of (1-10):1; preparing the mixed materials into a film semi-finished product consisting of polypropylene and polystyrene by adopting a tape casting method, an extruding method or a calenderingmethod; putting the film semi-finished product in chloroform or tetrahydrofuran for soaking so as to ensure that the polystyrene contained in the film semi-finished product is sufficiently dissolved;and then taking out and drying to obtain the porous super hydrophobic polypropylene film. The porous super hydrophobic polypropylene film has stable super hydrophobic property, good super hydrophobiceffect, simple preparation process, good controllability, low production cost and environmental protection.

Description

technical field [0001] The invention relates to an organic polymer polymer material and a preparation method thereof, in particular to a polymer film material with superhydrophobic properties and a preparation method thereof. Background technique [0002] It is well known that the wettability of a solid surface is determined by the chemical composition and surface roughness of the surface. The contact angle on the smooth solid surface with the lowest surface energy can only be increased to 120° at most, but there are a large number of superhydrophobic surfaces in the natural environment (the contact angle between the surface of the material and water is greater than 150°, and the water droplets have a relatively large surface area on the surface. Small rolling angle), the most typical is the surface of the lotus leaf. Water droplets usually form shiny spherical water droplets on the surface of the lotus leaf. These water droplets cannot stay on the surface of the lotus leaf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08J9/26
Inventor 袁志庆曾竟成肖加余刘钧邢素丽江大志王春齐
Owner NAT UNIV OF DEFENSE TECH
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