BS EN 1464:2010 pdf free download
BS EN 1464:2010 pdf free download.Adhesives – Determination of peel resistance of ad hesive bonds – Floating roller method.
The test specimens shall be conditioned and tested in one of the standard laboratory atmospheres specified in EN Iso 291.
7 Procedure
7.1 Dry peel test
Insert the test specimen into the peel test fixture (4.2) as shown in Figure 1, with the unbounded end of the flexible adherend gripped in the jaw of the testing machine (4.1). Peel the specimen at a constant crosshead separation rate of (100 ± 5) mm/mm, unless otherwise specified. If the rigid adherend bends or is distorted during the test, it is recommended that the specimen be redesigned with a rigid adherend stiff enough to ensure even peeling.
During the peel test, make an autographic recording of force versus crosshead movement (force versus distance peeled) over a length of a least 115 mm of the bond line disregarding the first 25 mm of peel.
Disregard the results if failure occurs outside the peeling zone as defined in Figure 1.
7.2 Wet peel test
Insert the test specimen into the peel test fixture (4.2) as shown in Figure 1, with the unbounded end of the flexible adherend gripped in the jaw of the testing machine (4.1). Peel the specimen at a constant crosshead separation rate of (100 ± 5) mm/mm, unless otherwise specified. If the rigid adherend bends or is distorted during the test, it is recommended that the specimen be redesigned with a rigid adherend stiff enough to ensure even peeling.
Stop the crosshead after peeling about 75 mm of the bonded length, Then apply several drops of water containing a wetting agent (for example 0,5 % to 1 ,0 % of a detergent) to the crack opening. After the application of this liquid the peeling process shall be immediately commenced. The test shall be continued until the complete sample is peeled.
An autographic recording of force versus crosshead movement (fOrce versus distance peeled) shall be made. Disregard the results if failure occurs outside the peeling zone as defined in Figure 1.
8 Expression of results
Determine from the autographic curve, for at least 115 mm of peeling (disregarding the first 25 mm and the last 25 mm), the average peeling resistance, in newtons per millimetre (N/mm) of the test specimen width, required to separate the adherends. The average force may be determined from the curve by one of the following methods:
a) a planimeter:
b) a gravimetnc method, as follows:
Cut out the area of the chard paper surrounded by the curve and the base line (abscissa) and weigh it. Determine the area by dividing its mass by the previously determine mass per surface area of the chart paper. Divide the area thus found by the length of the base line (corresponding to 80 mm peeling length), to obtain the average height of the curve (and hence the average peeling force);
c) by drawing the best straight line through the peeling curve using a straight edge.BS EN 1464 pdf free download.
