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What is the cause of acrylic sheet rupture?

Views: 0     Author: Site Editor     Publish Time: 2018-02-05      Origin: Site

1. Crack of plexiglass/acrylic, silver wire, must be with chemical contact will appear, for example, with alcohol and other low carbon alcohols wipe its surface. Because Plexiglass is a polar amorphous polymer, is a hard and brittle plastic products, and alcohol is a small molecular polar solvent, it is easy to diffuse into PMMA/ Plexiglass/acrylic, swelling, crack, resulting in environmental stress cracking.
2. Alcohol/ethanol solvent dissolved some monomers, oligomers and plasticizers in the plexiglass/acrylic resulting in cracking.

3. There are processing residual stresses and microcracks in the plexiglass/acrylic itself, which make the alcohol/ethanol can rapidly diffuse into the PMMA, thus accelerating the cracking speed.

4. There are associated water molecules in plexiglass/acrylic, alcohol water absorption, leading to the reduction of PMMA strength, the principle is the same as the reason two.

5. Organic glass/acrylic in many chlorinated hydrocarbons and aromatics can be dissolved, such as dichloroethane, trichloroethylene, chloroform, toluene, ethylene acetic acid, acetone and other solvents. Therefore, in the use of plexiglas/acrylic containers, should avoid contact with these reagents.

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