The SPE Library contains thousands of papers, presentations, journal briefs and recorded webinars from the best minds in the Plastics Industry. Spanning almost two decades, this collection of published research and development work in polymer science and plastics technology is a wealth of knowledge and information for anyone involved in plastics.
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Additives and Color
Characterization of Polycarbonate Blends: Executive (FT-IR) Compared To Rheology
This work was mainly focused on examining the viscosity and FT-IR for the same samples at the same temperatures. The characterizations were run in three stages. The first stage: The polycarbonate resins were melt-blended using (Coperion) a Co-rotating twin-screw extruder (SB). In the second stage, the same material was included; the same compositions were blended in steps of eleven in a Thermo Haake Mini Lab II twin-screw micro compounder (ML). The steps (%PC1/%PC2) were (100%/0%), (90%/10%), (80%, 20%)… (0%/100%) which resulted in eleven batches. In the third stage, the same polycarbonate blends samples were characterized by Fourier transform infrared spectroscopy (FT-IR) spectra analysis. The research aims to identify a comparative characterization study for the viscosity and FTIR. The results have a significant fundamental science by steering a systematic effect on viscosity and dispersion. This technique is particularly useful since it allows identification and localization of compounds to study and identify chemical groups or chemical compounds when the sample absorbs infrared radiation. The focus was extended to the polymer grade to extract the impact of the rheological characteristic, FTIR and to study their correlations in the viscosity data and their bearing effects on color output
Improving Thermal Conductivity of CoContinuous Ternary Composites using Double Percolation Structure
The double percolation structure was used to produce thermally conductive polymeric composites including high density poly (methyl methacrylate) (PMMA)/polyethylene (HDPE)/ carbon nanofiber (CNF) and polypropylene (PP)/PMMA/boron nitride (BN) composites. Microscopy images showed that for both systems, most of fillers were in PMMA phase, confirming the hypothesis of the filler location by the thermodynamic theory. The thermal conductivity of the PMMA/HDPE/ CNF composite was higher than that of the HDPE/CNF and the PMMA/CNF composites with the same content of fillers loading when the CNF concentration got to 16 wt%. In addition, a similar phenomenon was also found when the BN concentration was above 10% in term of the PP/PMMA/BN composites. This study proved that double percolation structure was a useful way to improve the thermal conductivity of the polymer composites.
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Society of Plastics Engineers
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