preimpregnation

preimpregnation

[¦prē·im‚preg′nā·shən]
(engineering)
The mixing of a plastic resin with reinforcing material or substrate before molding takes place.
References in periodicals archive ?
Thermal modification of southern pine combined with wax emulsion preimpregnation: effect on hydrophobicity and dimensional stability.
Contract notice: Cleaning trolley for preimpregnation method.
The particular form of composite fabrication (prepreg) begins with the preimpregnation of reinforcement materials with a resin.
Sacher's contributions to the plastics industry include: application of X-ray diffraction to establish the existence of side-chain crystallization in higher alkyl acrylate polymers and infrared to characterize the structure of polymers; early elucidation of polymer structure by means of infrared spectroscopy--in the late 1940s; the development of a continuous resin preimpregnation process to replace cumbersome hand wet lay-ups for the manufacture of reinforced plastics, e.g., the epoxy glass used in the printed circuits of Explorer 1; and the first successful incorporation of a chlorinated polyester resin in prepregs that produced fire-resistive structural thermosetting composites parts for military and commercial aircraft.
Results showed that while borate preimpregnation before varnish coating increased surface hardness and gloss of wood surface, it decreased coating adhesion.
Borate preimpregnation increased the gloss of the coating.