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Method for preparing super hydrophobic polymeric coating using non-crystalline polymer

A polymer coating, non-crystalline technology, applied in coatings, devices for coating liquid on the surface, polycarbonate coatings, etc., can solve problems that are difficult to have practical value and harsh conditions, and achieve excellent anti-coagulation The effect of blood

Inactive Publication Date: 2005-05-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, the methods reported in the literature for the preparation of solids to construct rough surfaces with superhydrophobic effects are difficu

Method used

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  • Method for preparing super hydrophobic polymeric coating using non-crystalline polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Set the molecular weight to 1×10 5 ~1×10 8 Amorphous polystyrene mixed with N,N-dimethylformamide (DMF) at a concentration of 1×10 -3 ~1×10g / ml, coated on the surface of the glass plate, and the solvent is naturally evaporated at 10-40 degrees Celsius to form a film. The obtained polymer coating has a contact angle with water of 155-165 degrees.

Embodiment 2

[0018] Set the molecular weight to 1×10 5 ~1×10 6 Polycarbonate, mixed with N,N-dimethylformamide (DMF) solvent, the concentration is 1×10 -3 ~1×10g / ml, coated on the surface of the glass plate, and the solvent is naturally evaporated at 10-40 degrees Celsius to form a film. The obtained polymer coating has a contact angle with water of 160-170 degrees.

Embodiment 3

[0020] Set the molecular weight to 1×10 5 ~1×10 6 Styrene-methyl methacrylate diblock, multi-block copolymer or random copolymer, mixed with N,N-dimethylformamide (DMF) solvent respectively, the concentration is 1×10 -3 ~1×10g / ml, coated on the solid surface, and the solvent is naturally evaporated at 10-40 degrees Celsius to form a film. The obtained polymer coating has a contact angle with water of 150-160 degrees.

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Abstract

The present invention relates to a method for preparing ultrahydrophobic high-molecular coating layer coated on the surface of solid by utilizing phase separation film-forming technique in the volatilizing process of noncrystalline high molecular in solvent under the normal temperature and normal pressure. Said method includes: dissolving noncrystalline high molecule in poor solvent at normal temperature, said solution concentration is 0.001-5 g/ml, then coating said poor solvent in which the noncrystalline high molecule is dissolved on the surface of solid to form film, making the solvent be volatilized and making noncrystalline high molecular soltue and poor solvent implement slow phase separation, finally forming rough ultrahydrophobic high-molecular coating layer on the surface of solid. Said invented ultrahydrophobic surface has good anticoagulant property.

Description

technical field [0001] The invention relates to a method for preparing a super-hydrophobic polymer coating coated on a solid surface by using the phase separation and film-forming technology of the non-crystalline polymer in the volatilization process of a solvent under normal temperature and pressure. Background technique [0002] Materials with super-hydrophobic surfaces (the contact angle with water is greater than 150°, and the rolling angle is less than 15°) have great application prospects in production and life. The superhydrophobicity of the material surface can effectively inhibit the oxidation and aging of the material surface, such as inhibiting the adhesion of microorganisms to the surface of the hull, and inhibiting the coagulation phenomenon on the surface of polymer materials. Superhydrophobic building materials and exterior wall coatings with self-cleaning function are effective ways to solve rain and snow adhesion and dust polluti...

Claims

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Application Information

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IPC IPC(8): B05D5/00C09D125/06C09D127/18C09D169/00C09D183/00
Inventor 谢琼丹张小莉徐坚
Owner INST OF CHEM CHINESE ACAD OF SCI
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