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Method of improving surface hydrophobicity of polymer

A polymer and hydrophobic technology, used in abrasive feeding devices, abrasives, metal processing equipment, etc., can solve the problems of difficult control of grinding degree and complicated process, and achieve the effect of simple operation, obvious effect and simple method.

Inactive Publication Date: 2006-08-02
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complex and needs to be polished 5-10 times, and the degree of polishing is difficult to control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Spray brown corundum with a mesh number of 36 evenly onto polytetrafluoroethylene, polypropylene, polyethylene, polyvinyl chloride, polycarbonate, polymethyl methacrylate sheet or amino silicone oil modified epoxy resin, amino silicone oil modified After washing and drying with distilled water, the contact angle with water was measured as shown in Table 1:

[0013] polymer

Embodiment 2

[0015] Spray brown corundum with a mesh number of 60 evenly onto polytetrafluoroethylene, polypropylene, polyethylene, polyvinyl chloride, polycarbonate, polymethyl methacrylate sheet or amino silicone oil modified epoxy resin, amino silicone oil modified After washing and drying with distilled water, the contact angle with water is as shown in Table 2:

[0016] polymer

Embodiment 3

[0018] Spray brown corundum with a mesh number of 120 evenly onto polytetrafluoroethylene, polypropylene, polyethylene polyvinyl chloride, polycarbonate, polymethyl methacrylate sheet and amino silicone oil modified epoxy resin, amino silicone oil modified After the polyurethane coating was washed and dried with distilled water, the contact angle with water was measured as shown in Table 3:

[0019] polymer

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PUM

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Abstract

The present invention belongs to the field of solid surface modifying technology, and is especially method of improved the surface wettability of polymer plate, film and coating. At room temperature, high pressure airflow with sand of different meshes is used to sand blast the surface of polymer, film and coating so as to obtain surface with high or super high hydrophobicity. The method is simple, low in cast, obvious in effect and high in repeatability, and makes it possible to alter the surface wettability of various polymer plate, material in special shape, film and coating at normal temperature.

Description

1. Technical field [0001] The invention belongs to the field of surface hydrophobic modification of polymer plates, films and coating films. 2. Background technology: [0002] Hydrophobic modification of solid surfaces has broad application prospects in industrial and agricultural production and daily life. After the solid surface is modified, a series of properties such as adsorption, infiltration, and dispersion change, especially the superhydrophobic surface has a self-cleaning function to prevent dust pollution and snow and rain adhesion. The surface hydrophobization of the material can inhibit the adhesion of microorganisms to the surface of the hull and inhibit the coagulation phenomenon on the surface of the polymer. The wettability of a solid surface is determined by the surface energy of the material and the topography of the material surface. At present, methods for changing the roughness of solid surfaces include laser etching, plasma etching, sandpaper grinding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C1/06B24C7/00
Inventor 粟常红王智勇耿洪斌肖怡王庆军陈庆民
Owner NANJING UNIV