Molding Process
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PEI stress cracking after contacting organic solvents
Fenómeno do problema
PEI products crack when contacting solvents such as ketones and chlorinated hydrocarbons
Análise das causas
PEI is sensitive to certain organic solvents (limited solvent resistance); residual internal stress of the product and the solvent produce a synergistic attack effect
Solução
Avoid PEI products contacting sensitive organic solvents; anneal products to reduce residual stress; select PEI grades with higher solvent resistance
Conclusão principal
Chemicals in the use environment need to be evaluated for compatibility with PEI
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