ISSN:
0449-2951
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
By use of a modified, small-bore, capillary extrusion rheometer (MCER) with an Instron tensile testing machine, the flow and set-up properties of thermosetting plastics and rubbers were characterized. The majority of the experiments were performed with diallyl phthalate, where the rate of curing was also followed by infrared determination of the reduction in unsaturation as the polymerization-curing proceeded. Phenol-formaldehyde was also characterized. Finally, the curing of ethylene-propylene and ethylene-vinyl acetate copolymer rubbers with peroxide was studied and correlated with the type of peroxide used. The MCER data are shown to be of practical use for predicting the time-temperature-pressure relationships for processing thermosetting plastics and rubbers. Moreover, the history of the curing, as obtained by analysis of the continuously extruded strand, is also of theoretical interest for studying reaction kinetics and for evaluating the effectiveness of various curing systems. It is predicted the MCER will be widely used for studying the curing of thermosetting plastics and rubbers.
Zusätzliches Material:
30 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/pol.1965.100030522
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