The main factor of Shandong Laiwu geotextile material Ltd. to introduce impact waterproofing membrane flexibility have? Preferred to understand what is compliance waterproofing membrane? Coil softness that is a flexible coil low temperature is an important physical indicators modified bitumen membrane. Flexibility refers to the next web roll bending performance when subjected flexibility at low temperatures, under the test conditions, the waterproof membrane is placed a predetermined temperature, keeping one hour, with 3 seconds at a predetermined arc bent 180 degrees, roll surface temperature does not appear compliance cracks called the web. Coil softness reflects the inherent quality and performance of the web to learn flexibility of the web master and apply good web softness of doing modified bitumen membrane roof construction, reduce losses, prevent infiltration drain, to ensure project quality is important. So waterproofing membrane flexibility What factors influence it? The following specific knowledge under: factors affecting the softness of the web a lot, mainly in the following areas: 1. temperature measured by the test method specified sample before measurement coil softness to the web at 20 ± 10 ℃ The room for at least 24h, the test specimen shall be (23 ± 2) ℃ placed on a flat plate at least 4h before the test, you can not roll or cold roll directly used to measure heat. According to my experience, in order to save time, test web compliance in a hurry, you can take the outside coming in hot or cold coil cut specimen, the specimen on (23 ± 2) ℃ water immersion It can be detected after 5 minutes. Time Test Method 2. Keep provisions: Determination of compliance coil, to roll the specimen is placed in a predetermined temperature of freezing liquid for 1 hour, flexibility and short retention time will affect the long coil. 3. Flexibility curved coil diameter measuring rod to be placed in a bend of the web site, the web should be close to the rod and the rod bent 180 degrees around to see if the cracks. Technical standards set forth in 2mm, 3mm thick sheet bending diameter Φ = 30mm; 4mm and 5mm thick curved coil diameter Φ = 50mm. The situation is different bending cracks of different diameter roll bending roll diameter Φ greater the more easy to crack when bent, whereas the smaller roll bending diameter Φ more prone to cracking. Flexibility test specimen to be bent into a curved sheet, folded and bent hard bend is wrong. 4. The speed measuring coil bending flexibility, coil bent at a predetermined speed of 3 seconds, the web begins to bend to 180 degrees bent over, time is 3 seconds. Construction waterproofing membrane test method (GB / T328.14-2007) provides that the time bent into a curved shaft from below against the specimen with 360mm / min speed rises, so that the specimen bent to 180 degrees, the diameter of 30mm time. Bend faster, more prone to cracking coil. On the other hand, bend the slower, more difficult to crack. 5. The web thickness web thickness, softness of the web is not the same. The same modified asphalt production of 2mm, 3mm thick sheet softness qualified, but compliance may have cracks with the same mix of production 4mm thick membrane. It is like a tissue bending will not crack, and the same paper into a 1mm thick bent will break. 6. The storage time extended web compliance with the storage time will change, longer storage time, the greater the flexibility of the web changes. According to actual testing, flexibility of the web in one year generally drop about 5 ℃, membrane flexibility to reduce membrane production usually occurs in the first few months out. Factors that affect the waterproofing membrane on the compliance of the introduction to this, hoping to help you. Our company is specialized in producing high-quality waterproofing membrane manufacturers, would like to know more about this information, please call the company professionals or our website.