Paint knowledge | paint adhesion test methods what are the paint adhesion test standards

Core tip: paint is a common home decoration material Many people don't know how to identify the quality of paint Most of them choose brand paint They don't know how to test the quality of other brands of paint In fact, the paint adhesion determines the quality of paint How to check the paint adhesion? What is paint adhesion? Paint adhesion refers to the paint film The ability to bond with the surface of the coating or the coating Adhesion is an important technical index The paint film with good adhesion is durable and has the performance required for use; the paint film with poor adhesion is easy to crack and fall off and cannot be used Paint adhesion test method Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Paint is a common home decoration material Many people don't know how to identify the quality of paint Most of them choose brand paint They don't know how to test the quality of other brands of paint In fact, the paint adhesion determines the quality of paint How to check the paint adhesion? What is the paint adhesion Paint adhesion refers to the ability of the paint film to combine with the surface of the object to be coated or the coating Adhesion is an important technical index The paint film with good adhesion is durable and has the performance required for use; the paint film with poor adhesion is easy to crack and fall off and cannot be used Paint adhesion test method 1 First, use the art blade or scriber to draw the shape of the cross grid on the paint coating, with a knife in the horizontal and vertical direction, forming a hundred small squares, the grid is 1mm × 1mm The cut of the scriber shall be to the bottom of the paint 2 Brush the small pieces five or six times in the diagonal direction with a brush, and then stick them on the incision with tape and pull them apart The adhesive force of the tape is 350-400g / m2 3 Finally, we use a magnifying glass to observe the lattice area 4 See the test standard of paint adhesion for the test results Inspection standard of paint adhesion we judge the standard of paint adhesion mainly depends on the number and percentage of the top coat or plating layer glued by the tape There are five grades in total: 1 ISO grade: 5 = ASTM grade: 0b, which means the peeling area of paint is greater than 65% 2 ISO grade: 4 = ASTM grade: 1b, some of the squares are partially or completely peeled, and the peeling area is greater than 35% - 65% 3 ISO grade: 3 = ASTM grade: 2B, representing partial peeling or large area paint peeling along the edge of the incision, and even some lattice parts are peeled by the whole piece, with an area of more than 15% - 35% 4 ISO grade: 2 = ASTM grade: 3b, representing that the peeling area of cut and intersection edge is greater than 5% - 15% 5 ISO grade: 1 = ASTM grade: 4b, which means there is a small piece of paint peeling at the intersection of cuts, and the actual damage in the delimited area is less than or equal to 5% 6 ISO grade: 0 = ASTM grade: 5b, which means that there is no peeling at the edge of the lattice and the edge of the incision is completely smooth This is the highest level of adhesion Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,