Method for preparing super-hydrophobic carbon fiber fabric

A carbon fiber fabric and super-hydrophobic technology, which is applied in carbon fiber, fiber processing, textiles and papermaking, etc., can solve the problems of low surface energy and poor bonding performance, and achieve low resistance to underwater navigation, light weight and strong stealth ability Effect

Inactive Publication Date: 2011-06-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the graphite-like structure on the surface of carbon fiber, its surface energy is low
This results in poor bonding with other materials and often requires surface modification before use

Method used

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  • Method for preparing super-hydrophobic carbon fiber fabric
  • Method for preparing super-hydrophobic carbon fiber fabric
  • Method for preparing super-hydrophobic carbon fiber fabric

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Experimental program
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specific Embodiment approach 1

[0011] Specific embodiment one: the preparation method of superhydrophobic carbon fiber fabric in the present embodiment is as follows: one, by weight percentage by 0.1%~8% perfluoroalkyl siloxane, 1%~10% water, 1%~10% acid , and the rest is a mixed solution composed of ethanol, which is ultrasonically treated for 30min to 120min to form a perfluoroalkylsiloxane solution; 2. Immerse the carbon fiber fabric in the perfluoroalkylsiloxane solution for 10s to 60s, and then dry it; 3. Repeat Step 2: 2 to 5 times; 4. Dry the carbon fiber fabric treated in step 3 at 80°C to 150°C for 3h to 12h to obtain a superhydrophobic carbon fiber fabric.

specific Embodiment approach 2

[0012] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the general chemical formula of perfluoroalkylsiloxane described in step 1 is CF 3 (CF 2 ) n Si(OC m h 2m+1 ) 3 , where n ranges from 2 to 200, and m ranges from 1 to 200. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0013] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the perfluoroalkylsiloxane chemical formula CF described in step one 3 (CF 2 ) n Si(OC m h 2m+1 ) 3 The value range of n is 3-18, and the value range of m is 1.5-2.5. Others are the same as in the second embodiment.

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Abstract

The invention discloses a method for preparing a super-hydrophobic carbon fiber fabric and relates to a method for preparing a carbon fiber fabric. The invention aims to provide a method for preparing a superhy-drophobic carbon fiber fabric which is covered with a thin layer of polyperfluoralkylsiloxane on the surface. The method comprises the following steps of: soaking a carbon fiber fabric into a perfluoralkylsiloxane solution; and then airing, repeating 2 to 5 times and drying to obtain the super-hydrophobic carbon fiber fabric. The invention realizes the superhydrophobicity of the surface of the carbon fiber fabric by utilizing the method for coating a hydrophobic substance (perfluoralkylsiloxane) on the macroscopical rough surface of the carbon fiber fabric. The prepared super-hydrophobic carbon fiber fabric can be used as a main building material for manufacturing a small ship and a submarine and used as an outer-layer coating material for being coated on the outer surface of the ship and the submarine.

Description

technical field [0001] The invention relates to a method for preparing a carbon fiber fabric. Background technique [0002] Carbon fiber is a new material with excellent mechanical properties. Its specific gravity is less than 1 / 4 of that of steel. The tensile strength of carbon fiber resin composite materials is generally above 3500Mpa, which is 7 to 9 times that of steel. The tensile modulus of elasticity is 23000 ~43000Mpa is also higher than steel. Therefore, the specific strength of CFRP, that is, the ratio of the strength of the material to its density, can reach more than 2000Mpa / (g / cm3), while the specific strength of A3 steel is only about 59Mpa / (g / cm3), and its specific modulus is also higher than that of steel. The higher the specific strength of the material, the smaller the weight of the component, and the higher the specific modulus, the greater the stiffness of the component. In this sense, it has indicated the broad application prospects of carbon fiber in e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/513D06M101/40
Inventor 姜再兴黄玉东刘丽
Owner HARBIN INST OF TECH
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