Super-hydrophobic polypropylene film and preparation method thereof

A polypropylene film and super-hydrophobic technology, which is applied in the field of super-hydrophobic polypropylene film and its preparation, can solve the problems that restrict the application of super-hydrophobic surface and low surface energy, and achieve good industrial application prospects, good structural stability and simple equipment Effect

Inactive Publication Date: 2009-09-16
NANTONG RONGRUN AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the reported methods currently either use expensive fluorine-containing or silane materials with low surface energy, or require special processing equipment or complicated process flow, which greatly restricts the practical application of superhydrophobic surfaces.

Method used

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  • Super-hydrophobic polypropylene film and preparation method thereof
  • Super-hydrophobic polypropylene film and preparation method thereof
  • Super-hydrophobic polypropylene film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, pretreat the glass sheet by immersing it in a solution of concentrated sulfuric acid and 30wt% hydrogen peroxide at a volume ratio of 7:3 for 1 hour, then take it out, rinse it with deionized water, and blow it dry with nitrogen to obtain a pretreated clean glass sheet. Then take a certain amount of isotactic polypropylene particles and add them to xylene, stir at 130°C for 30 minutes to form a 1 mg / mL polypropylene solution, then add acetone that is 20% of the volume of the polypropylene solution and stir, then use In the casting method, the acetone-added polypropylene solution is spread on the glass substrate, and after natural drying at 20°C for 12 hours, a white polypropylene film is formed on the glass surface. see figure 1 , using OCAH200 contact angle tester to test the wettability of the film surface, the results show that the contact angle of the surface with water is 152°, and the rolling angle is less than 4°. The surface morphology of the film was ob...

Embodiment 2

[0022] First, pretreat the glass sheet by immersing it in a solution of concentrated sulfuric acid and 30wt% hydrogen peroxide at a volume ratio of 7:3 for 1 hour, then take it out, rinse it with deionized water, and blow it dry with nitrogen to obtain a pretreated clean glass sheet. Then take a certain amount of isotactic polypropylene particles and add them to xylene, stir at 130°C for 30 minutes to form a 25 mg / mL polypropylene solution, then add acetone that is 40% of the volume of the polypropylene solution and stir, then use The polypropylene solution added with acetone is flowed on the glass substrate by casting method, and after vacuum drying at 70°C for 3 hours, a white polypropylene film is formed on the glass surface. see image 3 , using OCAH200 contact angle tester to test the wettability of the film surface, it shows that the contact angle between the surface and water is 174°, and the rolling angle is less than 4°. The surface morphology of the film was observe...

Embodiment 3

[0024] First, pretreat the glass sheet by immersing it in a solution of concentrated sulfuric acid and 30wt% hydrogen peroxide at a volume ratio of 7:3 for 1 hour, then take it out, rinse it with deionized water, and blow it dry with nitrogen to obtain a pretreated clean glass sheet. Then take a certain amount of isotactic polypropylene particles and add them to xylene, stir at 130°C for 30 minutes to form a 50 mg / mL polypropylene solution, then add acetone that is 60% of the volume of the polypropylene solution and stir for 3 minutes, then The polypropylene solution added with acetone was flowed on the glass substrate by casting method, and after vacuum drying at a temperature of 45°C for 3 hours, a white polypropylene film was formed on the glass surface. OCAH200 contact angle tester was used to test the wettability of the surface of the film, and the results showed that the contact angle between the surface and water was 160°, and the rolling angle was less than 4°. The sur...

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Abstract

The invention discloses a super-hydrophobic polypropylene film and a preparation method thereof. The method comprises the following steps: firstly, weighing a definite amount of isotactic polypropylene granules and adding the granules into dimethyl benzene, rising the temperature to 130 DEG C, and stirring the solution by magnetic force to form 1 to 50mg / mL polypropylene solution; secondly, adding 20 to 60 percent of acetone by the volume of the solution into the polypropylene solution, and quickly stirring the solution; and finally, coating the polypropylene solution added with the acetone on a substrate by adopting a coating method, and drying the substrate for 3 to 12 hours at a temperature of between 20 and 70 DEG C to obtain a white film, namely the super-hydrophobic polypropylene film. The method has the advantages of simple operation, low cost and good controllability, does not need complex chemical treatment or expensive equipment, and is easy for industrialization. The obtained super-hydrophobic polypropylene film has the characteristics of better surface structure stability, weather-proof durability, chemical corrosion resistance and the like.

Description

technical field [0001] The invention relates to the technical field of a superhydrophobic film material, in particular to a superhydrophobic polypropylene film and a preparation method thereof. Background technique [0002] It is well known that the wettability of a material surface depends on the surface chemical properties of the material and the surface morphology of the material. The contact angle on a smooth surface 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 material surface and water is greater than 150°, and the rolling angle is less than 10°), the most typical one is the superhydrophobic surface. Leaf surface self-cleaning effect. Superhydrophobic surfaces are of great significance in basic research and industrial applications due to their waterproof, anti-fog, self-cleaning and other characteristics, and have attracted extensive attention. Jiang Lei et a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L23/12
Inventor 吉海燕陈刚赵玉涛胡杰宋浩杰
Owner NANTONG RONGRUN AUTO PARTS
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