ASTM D 3359-02 PDF

Standard Test Method f A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

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For tests in the field, ensure that the surface is clean and dry. Extremes in temperature or relative humidity may affect the adhesion of the tape or the coating. Then dry or prepare the surface, or both, as agreed upon between the purchaser and the seller. When making the incisions, use the straightedge and cut through the coating to the substrate in one steady motion. If the substrate has not been reached make another X in a different location.

Do not attempt to deepen a previous cut as this may affect adhesion along the incision. Remove an additional length at a steady that is, not jerked rate and cut a piece about 75 mm 3 in.

Smooth the tape into place by finger in the area of the incisions and then rub firmly with the eraser on the end of a pencil. The color under the transparent tape is a useful indication of when good contact has been made. For large structures make sufficient tests to ensure that the adhesion evaluation is representative of the whole surface.

Discard cutting tools that develop nicks or other defects that tear the film. If the adhesion strength of the tape has not been determined, report the specific tape used and its manufacturer. What are the hazards of powder coatings? Related News: Suitable temperature for Waterproof coating Development trend of heavy anti-corrosion coatings for offshore platform Development model of heavy anti-corrosion coatings for Marine platform Four different chemical methods can be used against plastics deterioration A short overview to summarize different scratch effects in automotive coating Particle Size Distribution.

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ASTM D3359

ASTM D is a standard test methods for measuring adhesion by tape test. This test method is also known as the Cross Hatch test. Typically method A is used for field testing and method B is used in laboratory. ASTM D is widely used in the coating industry as it allows to semi-quantify the adhesion of the coating undergoing testing to the specific substrate it is applied to. Because of its macroscopic nature, this method allows to factor in the complete coating process from surface preparation to curing.

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Finish Coatings System Adhesion and Test Methods

To view the full PDF of this report click here. These trends in finishing require the use of glazes, shaders, toners and other high performance coatings. With these finishing systems, finishers must be more vigilant in testing to ensure the adhesion properties of the system used will successfully meet the expectations for performance of the product. There are two factors that affect the ability of the coating to adhere to the surface: mechanical adhesion and chemical adhesion. Mechanical adhesion occurs by the coating adhering to the sanding scratch profile of the surface and by flowing around the fiber of the substrate to mechanically secure the film to the surface. Deeper and larger sanding profiles will increase coating adhesion whereas shallower profiles and smoother surfaces impede the ability of the coating to sufficiently adhere.

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Procedure for X-CUT TAPE TEST METHOD-ASTM D3359-02

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Classification of Adhesion Test Results-ASTM D3359-02

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