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What are the reasons for the damage of the polycarbonate board

by:UNQ     2021-03-10
The knives or tools for processing the polycarbonate board must not cause any damage to the non-processed parts of the board, and the cut must be smooth. Because minor damage can also cause severe cracking. It is never allowed to nail the polycarbonate sheet directly to the frame, otherwise it will cause high stress due to the expansion of the board and damage the edge of the perforation. Sealants and gaskets suitable for polycarbonate plastic must be selected. Use wet sealant paste in wet assembly systems. The protective film must not be damaged or removed before the installation is completed to avoid scratching the surface.   The polycarbonate board must not be bent perpendicular to the direction of the ribs, because this will not produce the curved stringer effect, and under the action of stress, it will cause the board to flatten or even break. The board must be bent in the direction of the ribs. It must be properly lined, packaged, and laid flat during transportation and storage, because any slight damage (such as scratches) on the surface of the board will develop into a crack.   If the bending radius of the polycarbonate sheet is too small, the mechanical strength and chemical resistance of the sheet will be drastically reduced. In order to avoid dangerous stress cracking on the exposed side, the bending radius of the sheet shall not be less than the specified data. Avoid contact with alkaline substances and aggressive organic substances, such as alkalis, basic salts, amines, ketones, aldehydes, esters, ethers, phenols, halogenated hydrocarbons, aromatic hydrocarbons, methanol, isopropanol, asphalt, etc. These substances can cause extremely serious chemical stress cracking.

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