RHEOLOGICAL BEHAVIORS AND VISCOELASTICITY OF PHENOLIC RESIN GEL

Phenolic resin gel which comprises hydrophobically associating polymer AP-P4 and crosslinker of phenolicresin YG103 is studied in its rheological behaviors and viscoelasticity characteristics,and the viscoelasticitiesbetween the phenolic resin gel and hydrophobically associating polymer are compared.The experiments indicatedthat the gelation procedure of the phenolic resin gel could be divided into three periods: the slowing inductionperiod,the increasing gelation stage,and the stabilization stage.The shear stress of phenolic resin gel depend onstress time and is hysteretic,and its strain could be better restored under the external force in a certain time.Thephenolic resin gel has not only broader linear viscoelasticity area but also higher storage modulus and loss modulusthan polymer solution.The storage modulus of the gel is higher than the loss modulus under low frequency,andNo.3 Abstract XVthe storage modulus and loss modulus could both increase in circumstance of increasing frequency or increasing thepercentage of corsslinker and polymer.But the storage modulus and loss modulus of gel system has a process ofdecreasing—increasing—decreasing with salinity increasing.