Paper number 419
|ADHESIVE INTERACTIONS IN INTERPHASES: COMPETITION BETWEEN ACID-BASE AND DIFFUSION MECHANISMS|
Elena Pisanova, Serge Zhandarov, and Edith Mäder
Institute of Polymer Research
Hohe Str. 6, Dresden 01069, Germany
|Summary||Bond strength between reinforcing fibers and polymer matrices can be controlled in two ways: 1) by intensification of molecular interaction at the interface and 2) by creation of a strong continuous layer (interphase) between the components. In this paper, we consider the possibilities of controlling interfacial strength by means of target-oriented variation of structure, thickness and strength of the interphase artificially created between the fiber and the matrix. Sublayers of different nature and thickness (0.05-30 µm) were deposited on carbon and glass fibers by means of various techniques: from a solution; by electrodeposition from a fluidized bed; by coating the fiber in vacuum with the polymer dispersion using an electron gun. The bond strength was measured using the pull-out and fragmentation tests.
||Keywords|| interphase, acid-base interactions, glass fibers, carbon fibers, fiber coating, micromechanical tests.
Theme : Interface and Interphase ; Physical Properties
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