Preparation of ultra-hydrophobic polyvinylidene fluoride membrane and product thereof

A super-hydrophobic and product technology, applied in the field of preparation of super-hydrophobic polyvinylidene fluoride film, can solve the problems of easy agglomeration of nanoparticles and reduced light transmittance of PVDF film, and achieve low adhesion, good self-cleaning function, good The effect of superhydrophobicity
CN101463140AInactive Publication Date: 2009-06-24TIANJIN POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN POLYTECHNIC UNIV
Publication Date
2009-06-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a hyperhydrophobic PVDF membrane and a product thereof. The preparation method comprises the following steps: 1. preparation of a PDVF membrane; 2. plasma treatment of the PDVF membrane: performing the plasma treatment on the PDVF membrane in a nitrogen, oxygen, air, argon or helium atmosphere at a power of 100-200W under a vacuum degree of 8-11Pa for 5-15min; and 3. surface modification of the PDVF membrane: preparing an organosilane solution with a volume concentration of 1 / 10-1 / 3, and placing the organosilane solution in a closed vessel with the relative humidity of 30-60% for use; then placing the PDVF membrane subject to the plasma treatment into the closed vessel, and treating the PDVF membrane by a chemical bath deposition method for 8-12min, or treating the PDVF membrane under a vapor condition by a chemical vapor deposition method for 50-120min; then adequately washing the PDVF membrane sequentially with toluene, ethanol and aqueous ethanol solution at an ethanol / water ratio of 1:1 at the normal temperature; drying at the temperature of 100-120 DEG C for 10-15min to obtain the hyperhydrophobic PVDF membrane. The PVDF membrane product is prepared by the preparation method of the hyperhydrophobic PVDF membrane.
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Description

technical field

[0001] The invention relates to a preparation technology of an organic film, in particular to a preparation method of a superhydrophobic polyvinylidene fluoride (PVDF) film and a product thereof. Background technique

[0002] Polyvinylidene fluoride (PVDF) is a high-molecular-weight semi-crystalline organic fluoropolymer, which has better weather resistance than other crystalline polymers, such as resistance to degradation caused by ultraviolet rays and damage from chemicals in the atmosphere. Resists attack by algae and fungi. Therefore, PVDF membrane has a wide range of uses, and can be widely used on the surface of architectural membranes, glass, textiles and other substrates to increase the weather resistance of the substrate. However, the hydrophobicity of the PVDF membrane surface is low, and the self-cleaning function is poor. The dust accumulated on the surface of the PVDF membrane during long-term use will affect the cleanliness and light transmissi...

Claims

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