TECHNIQUES AND RESULTS FOR FIBER LENGTH DISTRIBUTION DETERMINATION AS A FUNCTION OF THICKNESS IN LONG FIBER REINFORCED INJECTION MOLDED THERMOPLASTICS

Conference · Mon Dec 31 23:00:00 EST 2007

OSTI ID:1093019

Kunc, Vlastimil ^[1]; Frame, Barbara J ^[1]; Pryor, Jeff M ^[1]; Nguyen, Ba N. ^[2]; TuckerIII, Charles L. ^[3]; Case, Scott ^[4]; Penumadu, Dayakar ^[5]; Guffey, Eric W ^[5]

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1. ORNL
2. Pacific Northwest National Laboratory (PNNL)
3. University of Illinois, Urbana-Champaign
4. Virginia Polytechnic Institute and State University
5. University of Tennessee, Knoxville (UTK)

A novel measurement technique was developed to obtain unbiased fiber length distribution (FLD) measurements at specified locations in the thickness of the sample. This technique relies on elastic energy stored in long fiber thermoplastics (LFT), which is released during partially constrained burn-off. This release results in an increase of thickness dimension of the sample and partial disentanglement, allowing sample selection and subsequent filament separation. Quantitative FLD results and the measurement technique are discussed in detail. The FLD in long fiber reinforced injection molded thermoplastics is shown to vary as a function of thickness.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1093019
• Country of Publication: United States
• Language: English

Related Subjects

Fiber Length Distribution
Injection Molded Thermoplastics