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Super-hydrophobic polypropylene film

A polypropylene film and superhydrophobic technology, which is applied in the field of superhydrophobic polypropylene film and hydrophobic film materials, can solve the problems of complex process and poor controllability, and achieve the effect of convenient preparation, low cost and good reproducibility

Active Publication Date: 2013-12-18
昌源集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, "a superhydrophobic polypropylene film and its preparation method" provided by the Chinese patent, its authorized announcement number is CN101531764B, in this patent, a polypropylene film is prepared by adding acetone to a polypropylene solution, and acetone is used to induce polymerization The propylene solution produces microphase separation and forms an irregular structure, thereby obtaining a super-hydrophobic surface. The surface of the prepared polypropylene film is a porous crystal network-like bird's nest structure, and the controllability of its preparation is relatively poor, and the process is relatively complex

Method used

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Examples

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Effect test

Embodiment 1

[0024] First, 10 grams of polypropylene pellets were weighed and dissolved in 1000ml of xylene at 120°C to form a polypropylene solution with a concentration of 10mg / ml; 85% and 20% ethanol vapor concentration at 80°C for 10 hours. During drying, the ethanol vapor and water vapor in the air penetrate into the surface of the polypropylene solution to form honeycomb pores, thereby obtaining a superhydrophobic surface. The obtained film is It is a superhydrophobic polypropylene film, and the surface of the superhydrophobic polypropylene film is honeycomb (such as figure 2 shown). Test the wettability of this film surface with OCA20 contact angle tester, the result shows that the contact angle of this film and water is 155 ± 1.9 ° (as figure 1 shown).

Embodiment 2

[0026] First, weigh 20 grams of polypropylene pellets and dissolve them in 1000ml of toluene at 120°C to form a polypropylene solution with a concentration of 20mg / ml; %, the ethanol vapor concentration is 5% and dried at 100°C for 15 hours. During drying, the ethanol vapor and water vapor in the air penetrate into the surface of the polypropylene solution to form honeycomb holes, thereby obtaining a super-hydrophobic surface. The resulting film is Superhydrophobic polypropylene film. Test the wettability of this film surface with OCA20 contact angle tester, the result shows that the contact angle of this film and water is 156 ± 1.6 ° (as image 3 shown).

Embodiment 3

[0028] First, weigh 50 grams of polypropylene pellets and dissolve them in 1000ml of benzene at 120°C to form a polypropylene solution with a concentration of 50mg / ml; %, the ethanol vapor concentration is 15% and dried at 120°C for 15 hours. During drying, the ethanol vapor and water vapor in the air are used to infiltrate the surface of the polypropylene solution to form honeycomb holes, thereby obtaining a super-hydrophobic surface. The obtained film is Superhydrophobic polypropylene film. Test the wettability of this film surface with OCA20 contact angle tester, the result shows that the contact angle of this film and water is 156 ± 1.8 ° (as Figure 4 shown).

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Abstract

The invention provides a super-hydrophobic polypropylene film and belongs to the technical field of super-hydrophobic films. The super-hydrophobic polypropylene film solves the problem that the existing super-hydrophobic film needs specific processing equipment or complex technical processes, consequently, the cost is high, and industrialization is difficult to realize. The surface of the super-hydrophobic polypropylene film is honeycomb-shaped, and a contact angle between the film and water is 150 degrees-170 degrees. The super-hydrophobic polypropylene film is stable in super-hydrophobic property, convenient to prepare, simple in process procedure, good in reproducibility, free of needs of any expensive equipment and complex chemical treatment process and low in cost, has good industrialization application prospects, and is suitable to large-scale industrialization production.

Description

technical field [0001] The invention relates to a hydrophobic film material, in particular to a superhydrophobic polypropylene film, which belongs to the technical field of superhydrophobic films. Background technique [0002] Polypropylene film is widely used in packaging, industry, agriculture and daily life due to its non-toxic, odorless, low cost and good transparency. However, currently commercial polypropylene films are not self-cleaning. [0003] Inspired by the lotus leaf effect, the preparation and research of superhydrophobic polymer films with water contact angles greater than 150° have aroused widespread interest in the industry in recent years. Since the contact area of ​​the liquid on the super-hydrophobic film is very small, it can effectively inhibit surface oxidation, corrosion, frost, current conduction, etc. , automotive windshields and other fields have broad application prospects. [0004] Obviously, if the polypropylene film is endowed with superhydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08J5/18C08L23/12
Inventor 吴军良吴俊霖吴希茜袁志庆王许南
Owner 昌源集团有限公司
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