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Large EMA dimensional change with temperature

Fenómeno do problema

EMA product dimensions change >2% in the range of -20 to 60°C

Análise das causas

EMA thermal expansion coefficient large; crystallinity too low causing high dimensional temperature sensitivity; no annealing treatment with residual stress

Solução

1) Add rigid filler to lower thermal expansion coefficient; 2) Annealing treatment to stabilize dimensions; 3) Select high crystallinity grade to reduce temperature sensitivity

Conclusão principal

Dimensional temperature sensitivity is caused by large thermal expansion coefficient; adding filler and annealing are key

EMA dimensional temperature sensitivity thermal expansion coefficient rigid filler annealing treatment

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Large EMA dimensional change with temperature

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