Extrusion & Post
10 مشاهدة
EVA dimensions change greatly with temperature
ظاهرة المشكلة
EVA product dimensions change >2% in the range of -20 to 60°C
تحليل الأسباب
EVA thermal expansion coefficient is large; low crystallinity causing high dimensional temperature sensitivity; no annealing treatment with residual stress
الحل
1) Add rigid fillers to reduce thermal expansion coefficient; 2) Annealing treatment to stabilize dimensions; 3) Select high crystallinity grades to reduce temperature sensitivity
الخلاصة الأساسية
Dimensional temperature sensitivity is caused by large thermal expansion coefficient; adding filler and annealing are key
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