Kevlar-49 fiber was modified through cold air plasma treatment and plasma grafting with acrylic monomers. Fracture of aramid fiber/epoxy resin micro composites has been studied by means of single fiber pull-out test. ...Kevlar-49 fiber was modified through cold air plasma treatment and plasma grafting with acrylic monomers. Fracture of aramid fiber/epoxy resin micro composites has been studied by means of single fiber pull-out test. Tow types of pull-out curves are correlated with the different failure modes. A polyacrylic acid-co-ethyl acrylate graft layer can improve the adhesion and protect the fiber from damage caused by interfacial stresses.展开更多
Polysiloxanes were grafted onto silica through functional group reactions. Polysiloxane-grafted silica is effective in lowering internal stress and enhancing crack resistance of the epoxy moulding compounds (EMC). No ...Polysiloxanes were grafted onto silica through functional group reactions. Polysiloxane-grafted silica is effective in lowering internal stress and enhancing crack resistance of the epoxy moulding compounds (EMC). No discrete polysiloxane domains were formed in the EMC, and the bleeding-out of polysiloxane can be solved by using the grafted silica as low stress modifier.展开更多
文摘Kevlar-49 fiber was modified through cold air plasma treatment and plasma grafting with acrylic monomers. Fracture of aramid fiber/epoxy resin micro composites has been studied by means of single fiber pull-out test. Tow types of pull-out curves are correlated with the different failure modes. A polyacrylic acid-co-ethyl acrylate graft layer can improve the adhesion and protect the fiber from damage caused by interfacial stresses.
文摘Polysiloxanes were grafted onto silica through functional group reactions. Polysiloxane-grafted silica is effective in lowering internal stress and enhancing crack resistance of the epoxy moulding compounds (EMC). No discrete polysiloxane domains were formed in the EMC, and the bleeding-out of polysiloxane can be solved by using the grafted silica as low stress modifier.
