How to Detect the Adhesion of Paint: Paint is a crucial element in home decoration. While there are many options for wall finishes today, paint remains one of the most popular choices due to its affordability and flexibility in color and design. In this article, we’ll walk you through how to properly assess the adhesion of paint. If you're not sure about the process, read on to learn more! How to Judge Paint Adhesion? A. Start by using an art knife or cross-cutting tool to create a crosshatch pattern on the painted surface. The cuts should go all the way down to the base layer. Each cut should be made so that the horizontal and vertical lines form 100 small squares, with each square measuring 1mm × 1mm. B. After making the cuts, brush over the grid area five to six times, focusing on the corners of each small square. Then, apply a piece of tape onto the cut area and quickly pull it off. The tape used should have a pressure-sensitive adhesive strength between 350-400g/m². C. Finally, examine the grid under a magnifying glass to check for any paint loss or peeling. D. The results will be evaluated according to standard paint adhesion test criteria. Paint Adhesion Test Standards The primary method for determining paint adhesion is based on how much topcoat or coating is removed by the tape, measured as a percentage of the total area. There are five levels of adhesion rating: A. ISO rating: 5 = ASTM rating: 0B This indicates that more than 65% of the paint has peeled off. B. ISO rating: 4 = ASTM rating: 1B Some of the squares are partially or fully peeled, with a peeling area between 35% and 65%. C. ISO rating: 3 = ASTM rating: 2B This means there is partial peeling or large areas of paint lifting along the edges of the cuts, and some of the grid may come off entirely, covering more than 15% to 35% of the area. D. ISO rating: 2 = ASTM rating: 3B Slight peeling occurs, with less than 15% of the area affected. E. ISO rating: 1 = ASTM rating: 4B No peeling at all—excellent adhesion. Tilt And Turn Windows Usa,Tilt And Turn Window Blinds,Adjust Tilt And Turn Window,Tilt And Turn Window Manufacturers Lemon Building Material Co., Ltd. , https://www.lemonbuilding.com
Jc001.load('iframe') JIFrame.create({ 'url' : '/go.php?action=ads&iframeHeight=250&isIframe=1&key=%CD%BF%C1%CF&pos_id=jc001_news_detail_30&reqkey=1&style=margin%3A15px+15px+25px+0%3B+height%3A255px%3Bwidth%3A255px%3B+float%3Aleft%3B', 'height' : 250 })