A kinetic study on the supercritical decrosslinking reaction of silane-crosslinked polyethylene in a continuous process

作者：Baek Bum Ki; La Yun Ho; Na Won Jun; Lee Seung Hwan; Hong Soon Man; Han Haksoo; Lee Youn Woo; Nam Gi Joon; Koo Chong Min

来源：Polymer Degradation and Stability, 2016, 126: 75-80.

DOI：10.1016/j.polymdegradstab.2016.01.019

• Silane-crosslinked polyethylene
• Supercritical methanol
• Continuous decrosslinking
• Kinetics
• Recycling

For the first time, a kinetic study on the supercritical decrosslinking reaction of silane-crosslinked polyethylene (S-XLPE) in a continuous process was conducted. The decrosslinking reaction in a continuous process was corresponding to the first-order reaction model in which the reaction rate was linearly proportional to the gel content. The residual gel content exponentially decreased with reaction time. Reaction constant was observed exponentially related to the reaction temperature. The continuous decrosslinking reaction revealed kinetic constants of 1.355 +/- 0.103, 2.715 +/- 0.177, and 4.348 +/- 0.218 min(-1) at 360, 380 and 390 degrees C, respectively and activation energy of 132.36 kJ mol(-1).

• 出版日期2016-4