ISSN:
0730-6679
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Microstructural analyses with optical and scanning electron microscopy can identify processing variables that lead to less than optimum mechanical properties of molded and friction welded polymer components. Delineation of the major phase arrangements in blends of polycarbonate (PC) and poly(butylene terephthalate) (PBT) was key to identifying stress concentrations and internal defects. Phase separations, crystalline arrangement, structure refinements, and shear stresses introduced during molding or friction welding were evident and help to explain the unpredictable impact fracture mode and strength. The techniques help identify when the brittle ribbonlike PC phase extends to the surface without being encapsulated or surrounded by the PBT phase.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/adv.1986.060060204
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