TY - JOUR
T1 - Study on Hole Filling of Porous PU/PEG Membrane and its Mechanical Properties
AU - Gui-Zhen Ke, Ru-Ping Ruan, Jin-Xiu Wang & Wei-Dong Yu
JO - Journal of Fiber Bioengineering and Informatics
VL - 4
SP - 231
EP - 236
PY - 2010
DA - 2010/02
SN - 2
DO - http://doi.org/10.3993/jfbi03201005
UR - https://global-sci.org/intro/article_detail/jfbi/5011.html
KW - Porous phase change membrane
KW - polyurethane
KW - polyethylene glycol
KW - filling
KW - mechanical properties
AB - This study attempted to introduce porous technology into functional textile's formation, and developed a new way to 
improve working materials content in phase change material. Porous polyurethane (PU)/polyethylene glycol (PEG) 
membrane was prepared and selected as a supporting material. Considered to be convenient for filling, anhydrous 
ethanol was used to decrease PEG viscidity according to the rule of similarity. The solution of PEG and anhydrous 
ethanol were filled into porous PU/PEG membrane by vacuuming and then PU dry-film technology was used for the 
sealing of the membrane hole. The effects of PEG mass percentage in ethanol solution on filling rate and the filling 
rate on the membrane morphology and mechanical properties were studied. The results show that, the filling rate 
increased with the increase of PEG content in the blending solution. As the filling rate increased, the elongation at 
break decreased obviously, while the initial modulus increased largely. After sealing the filled membrane using PU 
dry-film technology, the initial modulus of the membrane decreased, while the elongation at break increased. In 
addition, DSC analysis indicates that the sealed membrane and pure PEG show similar thermal properties, while the 
compound membrane can retain its solid shape during phase change.