Abstract
The effect of process factors on weld lines of nylon 6 nanocomposites was investigated. Eight process factors were evaluated: injection pressure, holding pressure, holding time, back pressure, screw rotational speed, cooling time, melt and mould temperatures. A modified L16 orthogonal array of the Taguchi method with three levels was designed to run injection moulding experiments using a smaller number of samples to determine the most influential parameters. The experimental results were analysed by sensitivity test signal-to-noise (S/N) ratio and analysis of variance (ANOVA). The results show that the principal process factors for single end-gated tensile samples are different to those of double end-gated samples when the weld line occurs. The important process factors of the single end-gated samples are injection pressure and mould temperature, whilst for the double end-gated samples are mould temperature and melt temperature. The temperature factor plays an important role in processing to heal the weld strength by promoting the ability of polymer molecules to diffuse across the weld line boundary, enhancing interfacial strength at the weld region.
| Original language | English |
|---|---|
| Pages | 723-727 |
| Number of pages | 5 |
| Publication status | Published - 1 Jun 2004 |
| Event | ANTEC 2004 - Annual Technical Conference Proceedings - Chicago, IL., United States of America Duration: 16 May 2004 → 20 May 2004 |
Conference
| Conference | ANTEC 2004 - Annual Technical Conference Proceedings |
|---|---|
| Country | United States of America |
| City | Chicago, IL. |
| Period | 16/05/04 → 20/05/04 |
Keywords
- ANOVA
- Nylon 6 nanocomposites
- Signal to noise ratio
- Weld lines
Cite this
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The effect of processing factors on weld lines in injection moulded nylon 6 nanocomposites. / Tung, J.; Simon, G. P.; Edward, G. H.
2004. 723-727 Paper presented at ANTEC 2004 - Annual Technical Conference Proceedings, Chicago, IL., United States of America.Research output: Contribution to conference › Paper › Other
TY - CONF
T1 - The effect of processing factors on weld lines in injection moulded nylon 6 nanocomposites
AU - Tung, J.
AU - Simon, G. P.
AU - Edward, G. H.
PY - 2004/6/1
Y1 - 2004/6/1
N2 - The effect of process factors on weld lines of nylon 6 nanocomposites was investigated. Eight process factors were evaluated: injection pressure, holding pressure, holding time, back pressure, screw rotational speed, cooling time, melt and mould temperatures. A modified L16 orthogonal array of the Taguchi method with three levels was designed to run injection moulding experiments using a smaller number of samples to determine the most influential parameters. The experimental results were analysed by sensitivity test signal-to-noise (S/N) ratio and analysis of variance (ANOVA). The results show that the principal process factors for single end-gated tensile samples are different to those of double end-gated samples when the weld line occurs. The important process factors of the single end-gated samples are injection pressure and mould temperature, whilst for the double end-gated samples are mould temperature and melt temperature. The temperature factor plays an important role in processing to heal the weld strength by promoting the ability of polymer molecules to diffuse across the weld line boundary, enhancing interfacial strength at the weld region.
AB - The effect of process factors on weld lines of nylon 6 nanocomposites was investigated. Eight process factors were evaluated: injection pressure, holding pressure, holding time, back pressure, screw rotational speed, cooling time, melt and mould temperatures. A modified L16 orthogonal array of the Taguchi method with three levels was designed to run injection moulding experiments using a smaller number of samples to determine the most influential parameters. The experimental results were analysed by sensitivity test signal-to-noise (S/N) ratio and analysis of variance (ANOVA). The results show that the principal process factors for single end-gated tensile samples are different to those of double end-gated samples when the weld line occurs. The important process factors of the single end-gated samples are injection pressure and mould temperature, whilst for the double end-gated samples are mould temperature and melt temperature. The temperature factor plays an important role in processing to heal the weld strength by promoting the ability of polymer molecules to diffuse across the weld line boundary, enhancing interfacial strength at the weld region.
KW - ANOVA
KW - Nylon 6 nanocomposites
KW - Signal to noise ratio
KW - Weld lines
UR - http://www.scopus.com/inward/record.url?scp=2442465647&partnerID=8YFLogxK
M3 - Paper
SP - 723
EP - 727
ER -