Do you know why the endurance board cracks?

The internal stress of the endurance board is formed in the process of extrusion molding and cooling and setting, and in the process of placing or using the PC endurance board without any change in shape, it will experience a stress relaxation effect. stress. However, it is difficult for the PC solid sheet with limited experience to completely eliminate these stresses, and there are still stresses in it. If the external stress is not increased during use, local deformation of the surface layer will occur and it will be close to the surface. And since then it is at the point of breakage (tiny cracks, cracks). Therefore, we must avoid those incorrect or excessive external stresses in use.

polycarbonate sheet

1. Do not damage or remove the protective film of the PC solid sheet before the installation is completed, so as not to scratch the surface.

2. It is absolutely not allowed to nail the plate directly to the skeleton, otherwise high stress will be generated due to the expansion of the plate and the edge of the perforation will be damaged.

3. Transportation and storage must be properly padded, packaged, and laid flat, because any slight damage (such as scratches) on the surface of the board will develop into cracks. And do not store boards in the same place as other chemicals, as volatiles can cause chemical stress cracking on the board surface.

4. Regardless of the type of PC solid sheet processing, the cutting tool or tool must not cause any damage to the non-processing parts of the sheet, and the cut should be as smooth as possible. Minor damage can also lead to severe cracking.

5. If the curvature ratio of the bent plate is too small, the mechanical strength and chemical resistance of the plate will drop sharply. In order to avoid dangerous stress cracking on the exposed side, the bending radius of the PC endurance plate shall not be less than the thickness of the plate 175 times.

The above is all the content introduced by Roof Tile manufacturers, I hope it will be helpful to you. If you want to know more knowledge, you can browse our website, we will provide you with more professional information.