Flexural creep of all‐polypropylene composites: Model analysis

Banik, K.; Karger‐Kocsis, J.; Abraham, Thomas

doi:10.1002/pen.21041

Cited by 49 publications

(52 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The addition of flame retardant increased the modulus reduction value to 65%, while its highest magnitude obtained for mPET was 85%. As compared to the modulus reductions of srPP ranging between 71.5 and 87% [31][32][33] and those of natural fiber composites (between 65 and 75%) [23][24][25][26][27][28], the studied srrPET composites exhibited superior creep resistance.…”

Section: Long-term Creep Behaviormentioning

confidence: 94%

“…Both the William-Landel-Ferry (WLF) and Arrhenius equations were used to obtain the shift factors for polymer composites in previous studies. For srPP, the Arrhenius equation was found to generate better fitting results as compared to the data produced by the WLF equation [31][32][33]. The WLF equation was found empirically to describe the frequency dependence of glass transition temperature in amorphous polymers.…”

Section: Short-term Creep Behavior and Ttsp Modelmentioning

confidence: 97%

“…Due to the aging of the polypropylene matrix with time, TTSP successfully predicted the long-term creep response of polymer composites at ambient temperature, but was found to be unsuitable at higher temperatures [30]. The long-term creep behavior of srPP composites was studied by Izer and Bárány [31] and KargerKocsis and covorkers [32,33] using TTSP, who concluded that it could be satisfactorily described by an Arrhenius-type relationship. However, in spite of the recent progress in investigating the creep behavior of fiber-reinforced composites, limited results were obtained for srPCs (especially for srPET-based materials).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Long-term creep behavior of self-reinforced PET composites

Wu¹,

Lin²,

Murakami³

2017

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Creep deformation of polymers results from their inherent viscoelastic nature that changes polymer's shape with time. Creep response represents an important property of thermoplastic composites that affects their dimensional stability, especially in applications requiring the material ability to support relatively high loads for long periods. This work examines the creep behavior of self-reinforced recycled poly(ethylene terephthalate) (srrPET) composites, which were produced by film stacking from fabrics composed of double covered uncommingled yarns with recycled PET homopolymer filaments (serving as the reinforcements) and copolymerized PET (mPET) filaments (serving as the matrix). The short-term creep behavior of both srrPET and mPET was studied in the single cantilever mode below and above the glass transition temperature, and the obtained data were analyzed using the Findley's viscoelastic and Burgers four-element models. The long-term creep behavior of srrPET specimens with and without open circular holes was described using an Arrhenius-type time-temperature superposition principle.

show abstract

Section: Long-term Creep Behaviormentioning

confidence: 94%

Section: Short-term Creep Behavior and Ttsp Modelmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Long-term creep behavior of self-reinforced PET composites

Wu¹,

Lin²,

Murakami³

2017

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…With shifting the single creep curves (measured at different testing temperatures) together (to a selected reference temperature) a master curve can be created. This time-temperature superposition method (TTS) is able to predict the long-term properties of the material from short time creep tests at higher temperature [17][18][19]. The relation between temperature and the shift factor can generally be described by the Arrhenius Equation (1):…”

Section: Introductionmentioning

confidence: 99%

Effect of consolidation on the flexural creep behaviour of all-polypropylene composite

Izer

Bárány

2010

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. The long-term viscoelastic behaviour of self-reinforced polypropylene composites (SRPPC) was studied by short-term flexural creep tests at different temperatures. As reinforcement a fabric, woven from highly stretched split PP yarns, whereas as matrix materials α and β crystal forms of isotactic PP homopolymer and random copolymer (with ethylene) were selected and used. The composite sheets were produced by film-stacking method and compression moulded at different processing temperatures (5, 20, 35°C above the melting temperatures of the matrices) keeping the holding time and pressure constant. The manufactured specimens were subjected to isothermal creep tests at different temperatures ranging from -20 to 80°C under an applied load. The time-temperature superposition principle was verified for the creep data. An Arrhenius type relationship described the shift data obtained from the creep tests. It was found, that with improving consolidation (increasing processing temperature) the creep compliance decreased and good correlation was found between creep compliance and density/peel strength.

show abstract

“…In such a case, the sample with the higher T m is used as the reinforcement, while the polymer with the lower T m serves as the matrix. This approach was used by Karger-Kocsis and coworkers [11][12][13][14] for preparing the two polymorphic modifications of PP. The modification with lower T m serving as the matrix was prepared using an appropriate nucleating agent and the reinforcement was the modification of PP with the higher T m .…”

Section: Introductionmentioning

confidence: 99%

Nanofibrillar Single Polymer Composites of Poly(ethylene terephthalate)

Duhovic

Bhattacharyya

Fakirov

2010

Macro Materials & Eng

View full text Add to dashboard Cite

Using the experience gained from the development of polymer–polymer nanofibrillar composites (NFCs), an attempt was undertaken to manufacture PET single polymer nanofibrillar composites. For this purpose polypropylene (PP) was removed by selective extraction from a knitted textile manufactured with PP/PET (80:20 by wt) blend. The remaining PET nanofibrillar textile was then sandwiched between lower‐melting PET films and compression molded at 120 °C. The obtained PET single polymer NFCs comprised PET nanofibrils as reinforcement and showed an improvement in the tensile strength and modulus of 37–100 and 40–140%, respectively (depending on the annealing temperature after compression molding and the test direction) compared to those of the starting isotropic matrix film.magnified image

show abstract

Flexural creep of all‐polypropylene composites: Model analysis

Cited by 49 publications

References 24 publications

Long-term creep behavior of self-reinforced PET composites

Long-term creep behavior of self-reinforced PET composites

Effect of consolidation on the flexural creep behaviour of all-polypropylene composite

Nanofibrillar Single Polymer Composites of Poly(ethylene terephthalate)

Contact Info

Product

Resources

About