Method for measuring barnacle adhesive force on surface of marine antifouling coating

A measurement method and marine anti-fouling technology, applied in the direction of measuring devices, instruments, mechanical devices, etc., can solve problems such as difficult, unavailable measurement, small size, etc.

Pending Publication Date: 2022-03-01
JILIN UNIV
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  • Abstract
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Problems solved by technology

On the other hand, for real barnacles, due to their small size, it is not easy to use a tension meter to connect them, so they cannot be measured using the ASTM D5618-94 (2011) standard

Method used

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  • Method for measuring barnacle adhesive force on surface of marine antifouling coating
  • Method for measuring barnacle adhesive force on surface of marine antifouling coating
  • Method for measuring barnacle adhesive force on surface of marine antifouling coating

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Embodiment Construction

[0055] The technical solutions of the present invention will be further explained and illustrated in the form of specific examples below.

[0056] A dynamic antifouling test equipment is described in "GB / T 7789-2007 Dynamic test method for antifouling performance of ship antifouling paint" (see figure 1 ), the device mainly includes a water tank, a motor, and a polyhedron for installing the coating. The polyhedron is connected with the motor and rotates under the drive of the motor to simulate the impact effect of the water flow on the coating. Since the device is widely used, the present invention describes a method for measuring the adhesion of barnacles on the surface of an underwater antifouling coating based on the device.

[0057] The dynamic antifouling test equipment is based on the description of GB / T 7789-2007, mainly including: motor 1, connecting shaft 2, polyhedron 3, transparent water tank 4, motor control 6. In order to realize the measurement method of the pre...

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Abstract

The invention relates to a method for measuring barnacle adhesive force on the surface of a marine antifouling coating, belongs to the technical field of antifouling performance testing on the surface of an antifouling coating, and aims at solving the problem that an existing testing method can only be used for testing under a quasi-static condition and cannot be used for testing under a hydrodynamic condition. On the basis, a high-speed camera is added to collect the moment when the barnacle is separated from the surface of the coating, the rotating speed omega of the motor at the moment is checked, and the magnitude of the adhesive force is obtained by calculating the resultant force of the gravity, the buoyancy, the centripetal force and the water resistance which are balanced with the adhesive force through stress analysis. The test under the hydrodynamic condition is realized, and the method is suitable for real barnacles and virtual barnacles as no tension meter is used.

Description

technical field [0001] The invention belongs to the technical field of antifouling coating performance testing. Background technique [0002] Marine biofouling on the surface of hulls and equipment in the ocean has brought huge economic losses to the marine industry. The development of antifouling coatings applied to these underwater surfaces is an effective antifouling approach. During the research and development of marine antifouling coatings, it is necessary to evaluate the antifouling performance of antifouling coatings. The usual experimental methods include: bacterial adhesion test, algae adhesion test, marine real sea coupon test, etc. In addition, there is a test method that is often used by researchers, the barnacle attachment test. A large number of barnacles are often seen adhering and growing on the rocks at the seaside. Since the barnacles have very strong adhesion, their adhesion can reach 1MPa, so the adhesion of barnacles on the surface of the coating can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 靳会超田丽梅王建福高铭谣殷玥
Owner JILIN UNIV
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