How to distinguish the degree of sbs waterproofing membrane?
How much of the weight of the waterproofing membrane is the "low temperature flexibility" of the web is the bending performance of the web in a negative temperature condition, and it is said that it is bent in a very cold environment without cracking. Generally speaking, the low temperature of the synthetic polymer membrane is better, and the low temperature performance of the modified asphalt membrane is related to the modification technology.
Method 3: If you do not want to send the laboratory, you can do the test in the refrigerator, as long as the refrigerator can meet the requirements of low temperature on the line. Method to refer to GB 18242 (2008) "elastomer modified asphalt waterproofing membrane". This method can only know the approximate situation of the coil.
Method 2: send the laboratory to do low-temperature flexible test. With the eyes and hand pull and other methods can not judge, if the experienced SBS production technology staff, from the hand pull, bending and other methods to determine the initial performance.
Method 1: Look at the product packaging instructions or factory inspection report, if it is type Ⅰ coil, low temperature flexibility is -20 °, if it is type Ⅱ coil, low temperature flexibility is -25 °.
