The influence of pressure on miscibility behavior of the systems polystyrene/cyclopentan(?)and polystyrene/1-phenyldecane is studied with a modified hole theory.It is found that the pres-sure dependence of excess volu...The influence of pressure on miscibility behavior of the systems polystyrene/cyclopentan(?)and polystyrene/1-phenyldecane is studied with a modified hole theory.It is found that the pres-sure dependence of excess volume is responsible for the different kinds of behavior of these two sys-tems.Furthermore,the excess volume is decomposed into two separatc parts,one from the contri-bution of cell volume expansion and the other from the change of hole fraction,and their relation-ship with pressure dependence of the miscibility behavior is analysed.展开更多
The morphological and compositional changes of the PP fibers pretreated with dielectric barrier discharge (DBD)are investigated with SEM, XPS and IR. The result shows that the etching effect is the main reason for the...The morphological and compositional changes of the PP fibers pretreated with dielectric barrier discharge (DBD)are investigated with SEM, XPS and IR. The result shows that the etching effect is the main reason for the improvement of the result of pull-out test of the fibercement composite reported in a previous paper and the oxidation of the fiber surface also favors the adhesion between the fiber and the matrix.展开更多
The effect of dielectric barrier discharge(DBD)on the interfacial mechanical property of polypropylene fiber reinforced cement is investigated with the aid of single fiber pull out test.The result shows that the DBD t...The effect of dielectric barrier discharge(DBD)on the interfacial mechanical property of polypropylene fiber reinforced cement is investigated with the aid of single fiber pull out test.The result shows that the DBD treatment improved the adhesion between the PP fiber and the surrounding cement matrix considerably without serious aging.Keywords:dielectric barrier discharge,single fiber pull-out test.展开更多
文摘The influence of pressure on miscibility behavior of the systems polystyrene/cyclopentan(?)and polystyrene/1-phenyldecane is studied with a modified hole theory.It is found that the pres-sure dependence of excess volume is responsible for the different kinds of behavior of these two sys-tems.Furthermore,the excess volume is decomposed into two separatc parts,one from the contri-bution of cell volume expansion and the other from the change of hole fraction,and their relation-ship with pressure dependence of the miscibility behavior is analysed.
基金This work was supported by The National Science Foundation(Cranted Number 29874030)
文摘The morphological and compositional changes of the PP fibers pretreated with dielectric barrier discharge (DBD)are investigated with SEM, XPS and IR. The result shows that the etching effect is the main reason for the improvement of the result of pull-out test of the fibercement composite reported in a previous paper and the oxidation of the fiber surface also favors the adhesion between the fiber and the matrix.
基金This work was aupported by the National Foundation(Cranted number 29874030)
文摘The effect of dielectric barrier discharge(DBD)on the interfacial mechanical property of polypropylene fiber reinforced cement is investigated with the aid of single fiber pull out test.The result shows that the DBD treatment improved the adhesion between the PP fiber and the surrounding cement matrix considerably without serious aging.Keywords:dielectric barrier discharge,single fiber pull-out test.
