Effects of preform architecture on racetracking in liquid molding

J. Chaneske, K. Jayaraman, David Norman, R. Robertson

Research output: Chapter in Book/Report/Conference proceedingChapter

  • 7 Citations

Abstract

This paper is concerned with preferential edge flow or racetracking, arising in liquid molding. The object of this paper is to understand the effect of preform architecture on the extent of racetracking, in terms of the mechanical characteristics of the preforms. Rectangular preforms with fiber volume fractions of around 0.4 to 0.47 were prepared with precision cutting from two different isotropic woven glass fabrics-Hexcel 7500 and Hexcel 7544. Experimental techniques have been developed for determining the sliding friction characteristics and effective stiffness of these preforms. Mold filling experiments were run in a rectangular mold with known starting edge gaps between the mold wall and the preforms. The injection pressure transients, the wetted area of the preform and the resin front in the edge gap were monitored. Greater sliding friction associated with a greater clamp force in the mold for one of the fabrics led to more controllable racetracking.

LanguageEnglish (US)
Title of host publicationInternational SAMPE Symposium and Exhibition (Proceedings)
PublisherSAMPE
Volume45
StatePublished - 2000
Event45th International SAMPE Symposium and Exhibition - Long Beach, CA, USA
Duration: May 21 2000May 25 2000

Other

Other45th International SAMPE Symposium and Exhibition
CityLong Beach, CA, USA
Period5/21/005/25/00

Profile

Molding
Friction
Clamping devices
Liquids
Volume fraction
Resins
Stiffness
Glass
Fibers
Experiments

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemical Engineering (miscellaneous)
  • Building and Construction
  • Polymers and Plastics

Cite this

Chaneske, J., Jayaraman, K., Norman, D., & Robertson, R. (2000). Effects of preform architecture on racetracking in liquid molding. In International SAMPE Symposium and Exhibition (Proceedings) (Vol. 45). SAMPE.

Effects of preform architecture on racetracking in liquid molding. / Chaneske, J.; Jayaraman, K.; Norman, David; Robertson, R.

International SAMPE Symposium and Exhibition (Proceedings). Vol. 45 SAMPE, 2000.

Research output: Chapter in Book/Report/Conference proceedingChapter

Chaneske, J, Jayaraman, K, Norman, D & Robertson, R 2000, Effects of preform architecture on racetracking in liquid molding. in International SAMPE Symposium and Exhibition (Proceedings). vol. 45, SAMPE, 45th International SAMPE Symposium and Exhibition, Long Beach, CA, USA, 5/21/00.
Chaneske J, Jayaraman K, Norman D, Robertson R. Effects of preform architecture on racetracking in liquid molding. In International SAMPE Symposium and Exhibition (Proceedings). Vol. 45. SAMPE. 2000.
Chaneske, J. ; Jayaraman, K. ; Norman, David ; Robertson, R./ Effects of preform architecture on racetracking in liquid molding. International SAMPE Symposium and Exhibition (Proceedings). Vol. 45 SAMPE, 2000.
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