Yi-jun LI, Lin PI, Min NIE, Qi WANG. Preparation of High Performance Polyethylene Microtubes via Rotation Extrusion Processing[J]. Polymer Bulletin, 2019,32(1):31-38.
Yi-jun LI, Lin PI, Min NIE, Qi WANG. Preparation of High Performance Polyethylene Microtubes via Rotation Extrusion Processing[J]. Polymer Bulletin, 2019,32(1):31-38. DOI: 10.14028/j.cnki.1003-3726.2019.01.004.
polyethylene (PE) microtubes with high torsion resistance were firstly fabricated by our self-designed rotation rheometer with mandrel rotation modes. The results demonstrated that with the introduction of hoop stress during rotation extrusion
molecular chains are starched in the off-axial direction and formed shish-kebabs with deviated angles. The deviated shish-kebabs exhibited high orientation degree in the pure shear stress direction
which gave rise to enhanced torsion resistance of PE microtubes. Compared with conventional PE microtubes
a maximum shear modulus of 1018. 11 MPa was achieved