Method for preparing antifouling material with surface of ridged microstructure

A microstructure and ridge-like technology, applied in the field of bionic antifouling material preparation, can solve the problems of reducing the effective attachment area of ​​fouling organisms on the shark skin, reducing the number of fouling organisms' attachment points, and being unsuitable for large-scale production. Small effective contact area, improved diatom adhesion rate, and biofouling inhibition effect

Active Publication Date: 2012-11-07
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the analysis, there are a large number of scale structures on the skin of sharks, and there are a large number of regular ridge-like microstructures on these scales, and the existence of these microstructures significantly reduces the effective attachment area of ​​fouling organisms on the skin of sharks, thus making pollution The number of attachment points decreases during the attachment process of the damage organism, and it cannot form sufficient adhesion force and finally cannot form attachment
By simulating the ridge microstructure characteristics of shark skin scales, it can provide a new way for the preparation of antifouling materials; at present, research on the preparation of antifouling materials based on bionic microstructure characteristics has been carried out at home and abroad, but the common problem is that the preparation process is complicated. , not suitable for large-scale production and other issues

Method used

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  • Method for preparing antifouling material with surface of ridged microstructure
  • Method for preparing antifouling material with surface of ridged microstructure

Examples

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Effect test

Embodiment 1

[0008] Embodiment 1: surface adsorption tetrabutyl titanate (Ti(OB u ) 4 ) prepared from polydimethylsiloxane (PDMS) elastomer

[0009] In this embodiment, tetrabutyl titanate (Ti(OB u ) 4 ) and absolute ethanol according to the volume ratio of 1:75~80 to make tetrabutyl titanate (Ti(OB u ) 4 ) in ethanol solution; then, place the polydimethylsiloxane (PDMS, 1cm×1cm) elastomer sample with hydroxyl-rich surface after the hydroxylation treatment in the solution for 3 to 5 minutes and take it out after immersion reaction. Rinse the surface with water and ethanol to obtain surface-adsorbed tetrabutyl titanate (Ti(OB u ) 4 ) polydimethylsiloxane (PDMS) elastomer; experimental control parameters are as shown in table 1:

[0010] Table 1 Surface adsorption of tetrabutyl titanate (Ti(OB u ) 4 ) Experimental control parameters for the preparation of polydimethylsiloxane (PDMS) elastomer

[0011]

Embodiment 2

[0012] Embodiment 2: the surface has TiO 2 Preparation of Polydimethylsiloxane (PDMS) Elastomer for Gel Film Layer

[0013] In this embodiment, the surface prepared in Example 1 is adsorbed with tetrabutyl titanate (Ti(OB u ) 4 ) polydimethylsiloxane (PDMS) elastomer samples 1, 2, and 3 were immersed in water for 4 minutes, 5 minutes, and 3 minutes, respectively, and the tetrabutyl titanate (Ti(OB) adsorbed on the surface u ) 4 ) can be hydrolyzed on the surface of polydimethylsiloxane (PDMS) elastomer to form TiO 2 gel film layer.

Embodiment 3

[0014] Example 3: Preparation of antifouling material with ridge microstructure on the surface

[0015] In this embodiment, polyacrylic acid (PAA) and absolute ethanol are prepared into an ethanol solution of polyacrylic acid (PAA) at a volume ratio of 1:10 to 30; then, the surfaces prepared in Example 2 with TiO 2 The polydimethylsiloxane (PDMS) elastomer samples 1, 2, and 3 of the gel film layer were put into the solution, respectively immersed in the reaction for 12 to 16 hours, then taken out, washed with absolute ethanol, and dried to obtain the surface Antifouling material with ridge microstructure; experimental control parameters are shown in Table 2:

[0016] Table 2 Control parameters of the preparation experiment of antifouling materials with ridge microstructure on the surface

[0017]

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Abstract

The invention belongs to the technical field of marine organism fouling protection and particularly relates to a method for preparing a bionic antifouling material which is designed in a purpose of preventing the shell surface of a ship in an ocean environment from attaching marine organisms. Ridged microstructure features which simulate the skin scale surface of a shark can be formed on the surface of the material. Polydimethy siloxane is used as a base material of the related antifouling material. After the surface of the base material is treated by hydroxylation, tetrabutyl titanate is first absorbed on the surface of the base material to form surface absorption, and then the hydrolysis properties of the tetrabutyl titanate are utilized to hydrolyze the surface of the polydimethy siloxane. The antifouling material with the surface of ridged microstructure features is obtained by utilizing the self-assembly reaction of a polyacrylic acid and ethanol solution and a TiO2 film. The invention has the advantages of simple preparation technology, reliable principles, environment-friendliness, good product properties, high production rate, good anti-fouling and anti-corrosion effect and capability of being used in industrial production.

Description

Technical field: [0001] The invention belongs to the technical field of marine biofouling protection, and relates to an antifouling material and a preparation method thereof, in particular to a bionic antifouling material preparation method designed for preventing marine organisms attached to the surface of a ship shell in a marine environment. The surface of the material can form ridge-like microstructural features that mimic the surface of shark epidermal scales. Background technique: [0002] There are a large number of marine organisms in seawater. These marine organisms will adhere to the surface of the ship’s hull that has been in the seawater environment for a long time. The adhesion will increase the travel resistance of the ship, seriously affect the sailing speed of the ship, increase fuel consumption, and at the same time It will destroy the anti-corrosion coating on the surface of the ship's hull, thereby causing corrosion and damage to the surface of the hull an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08L83/04
Inventor 蔺存国杨黎晖王利
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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