Extrusion & Post
13 visualizações
EVA dimensions change greatly with temperature
Fenómeno do problema
EVA product dimensions change >2% in the range of -20 to 60°C
Análise das causas
EVA thermal expansion coefficient is large; low crystallinity causing high dimensional temperature sensitivity; no annealing treatment with residual stress
Solução
1) Add rigid fillers to reduce thermal expansion coefficient; 2) Annealing treatment to stabilize dimensions; 3) Select high crystallinity grades to reduce temperature sensitivity
Conclusão principal
Dimensional temperature sensitivity is caused by large thermal expansion coefficient; adding filler and annealing are key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!