Test Nano aluminum Composite panel

Test Nano aluminum Composite panel

Nano Aluminum Composite Premium Bond

Introduction

Premium Bond Nano Composite Sheet Test was examined and tested in terms of waterproofing and self-cleaning properties during the submission of premium Bond composite sheets to the Research Institute of Color and Coating Science and Technology of the Ministry of Science, Research and Technology.

The purpose of the test

The purpose of the test is to determine the self-cleaning and hydro-phobicity of the coating applied to the premium band composite sheet.

Tests performed

Measure the static contact angle – water on the samples

Test methods

Wetness assessment methods

• Static contact angle

Static contact angle (contact angle at rest) is the most important criterion for assessing surface roughness.

Measuring the contact angle of water. The first and most common method is to check the level of hydro-philicity or surface runoff.

The contact angle of a drop of water depends on various parameters such as surface energy, underlying roughness, surface preparation and its cleanliness.

If the drop of water makes the contact surface less than 90 degrees with the solid surface,
It will level the surface and that surface will be hydrophilic
And if the size of this angle is in the range of 180 to 90 degrees, the surface will not be wetter and the surface will be hydrophobic.

The contact angle of the water on the hydrophobic surfaces is very high
And the drop finds a perfect sphere on a similar shape. It is in the runoff levels.

Therefore, the prerequisite for creating self-cleaning property is having static contact angles above 150 degrees and the surface is hydrophobic.
If this is achieved, the slip angle and contact angle to assess the degree of water droplet adhesion on the surface will also be investigated.

Test results

Results of static-water contact angle study for samples:

The adhesive drop method was used to measure the contact angle
In this method, droplets with a volume of 3 micro liters of ion-free water are placed on the surface of the sample by a micro-pipette.
And from the drop, a digital image was taken with the binoculars.

The contact angle was then measured by Image J software. For each sample, the test was repeated at three different points on the surface, and their mean was reported as the final contact angle.