GENERATION OF LARGE RESIDUAL-STRESSES IN INJECTION MOLDINGS

Authors
KWOK CS TONG L WHITE JR
Citation
Cs. Kwok et al., GENERATION OF LARGE RESIDUAL-STRESSES IN INJECTION MOLDINGS, Polymer engineering and science, 36(5), 1996, pp. 651-657
Citations number
31
Categorie Soggetti
Polymer Sciences","Engineering, Chemical
Journal title
Polymer engineering and science → ACNP
ISSN journal
00323888
Volume
36
Issue
5
Year of publication
1996
Pages
651 - 657
Database
ISI
SICI code
0032-3888(1996)36:5<651:GOLRII>2.0.ZU;2-I
Abstract
Large residual stresses have been generated in injection molded bars b y ejecting them prematurely and completing the cooling process by quen ching into ice water or liquid nitrogen. The stress distribution forme d under these conditions was found to be much closer to parabolic than is the case when the moldings cool conventionally. Limited testing on moldings made in this way indicated significant property enhancement and improved resistance to ultraviolet degradation.