Abstract
The present study reports on the results of an integrated experimental program to determine some of the important interactions between resin properties, moldability, and the microstructure and ultimate properties of molded articles. As part of the program, resins are characterized as to their rheological, thermal, and P. V. T. properties. Then, the resins are injection molded in a laboratory machine employing simple, but highly instrumented molds in order to evaluate moldability and to produce moldings for testing and analysis. Microstructural analysis to determine morphology and orientation of the moldings is carried out utilizing polarized light microscopy and the differential scanning calorimeter. Finally, shrinkage and tensile properties of the moldings are determined experimentally. To illustrate the utility of the proposed techniques, results are reported for two polyethylene resins that exhibit superficially similar properties but, according to tests, show significant differences in moldability and product properties.
Original language | English |
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State | Published - 1978 |
Event | SPE, Tech Conf on, East NEngl Sect, Profits with Injection Molding $—$ Mark through Technol - Boston, Mass Duration: 3 Oct 1978 → 5 Oct 1978 |
Conference
Conference | SPE, Tech Conf on, East NEngl Sect, Profits with Injection Molding $—$ Mark through Technol |
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City | Boston, Mass |
Period | 3/10/78 → 5/10/78 |