Mirzaei, B., Tajvidi, M. (2012). Investigation on the stress relaxation behavior of milled newsprint filled polyethylene composite. , 27(2), 226-234. doi: 10.22092/ijwpr.2012.117063
Babak Mirzaei; Mehdi Tajvidi. "Investigation on the stress relaxation behavior of milled newsprint filled polyethylene composite". , 27, 2, 2012, 226-234. doi: 10.22092/ijwpr.2012.117063
Mirzaei, B., Tajvidi, M. (2012). 'Investigation on the stress relaxation behavior of milled newsprint filled polyethylene composite', , 27(2), pp. 226-234. doi: 10.22092/ijwpr.2012.117063
Mirzaei, B., Tajvidi, M. Investigation on the stress relaxation behavior of milled newsprint filled polyethylene composite. , 2012; 27(2): 226-234. doi: 10.22092/ijwpr.2012.117063

Investigation on the stress relaxation behavior of milled newsprint filled polyethylene composite

تحقیقات علوم چوب و کاغذ ایران
Article 4, Volume 27, Issue 2 - Serial Number 39, June 2012, Pages 226-234    PDF (199.71 K)
Document Type: Research Paper
DOI: 10.22092/ijwpr.2012.117063
Authors
Babak Mirzaei* 1; Mehdi Tajvidi2
1MSc., Wood and Paper Science and Technology Department, Natural Resources Faculty, Tehran University
2Assistant Professor, Wood and Paper Science and Technology Department, Natural Resources Faculty, Tehran University.
Abstract
Stress relaxation behavior of milled newsprint/HDPE composite containing coupling agent was studied. Composites containing 25 and 50% filler in weight were produced, and were compared to neat polymer. Melt blending followed by injection molding was the manufacturing process. Results showed that incorporating filler to polymer increases the flexural strength and modulus. It was observed that higher stress is needed to maintain higher strain levels. Furthermore, comparing the stress ratio patterns revealed that the difference among relaxation of different samples develops over time. Power law computed parameters showed that higher strain level results in higher stress relaxation amplitude (A) and lower time exponent (t). It was also found that, almost complete linear relationship could be established between strain level and parameter A, and the effect of strain level on parameter A is more pronounced at higher filler contents.
Keywords
Stress; composites; melt blending; Flexural strength
References

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