화학공학소재연구정보센터
Polymer Engineering and Science, Vol.35, No.19, 1555-1561, 1995
The Effect of Drawing Temperature on Multistage Drawn Ultra-High-Molecular-Weight Polyethylene
The effect of drawing temperatures on multi-stage drawn ultra-high molecular weight polyethylene (UHMWPE) fiber, produced by gel spinning, has been studied. Drawing at higher temperatures generally gives higher crystal orientation, as expected. The activation energy of drawing increased with the draw ratio and draw sequence. It varied at a given draw ratio and draw stage between two temperature ranges, 85 to 115 degrees C and 115 to 135 degrees C. Thus, for the first draw stage, the activation energy is similar to 19-33 KJ/mole in the range of 85 to 115 degrees C, and similar to 60-99 KJ/mole in the range of 115 to 135 degrees C. In the second stage, the activation energy is 40 KJ/mole in the range of 105 to 115 degrees C and 70-90 KJ/mole in the range of 115 to 135 degrees C. In the third stage, the activation energy is similar to 92-100 KJ/mole in the range of 115 to 135 degrees C.