Strain induced crystallization and melting of natural rubber during dynamic cycles

2015 ◽  
Vol 17 (23) ◽  
pp. 15331-15338 ◽  
Author(s):  
Nicolas Candau ◽  
Laurent Chazeau ◽  
Jean-Marc Chenal ◽  
Catherine Gauthier ◽  
José Ferreira ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Strain Rate ◽  
High Frequencies ◽  
Self Heating ◽  
Strain Induced Crystallization ◽  
Chain Alignment ◽  
First Time ◽  
Induced Crystallization

The investigation on strain-induced crystallization, during complete cycles at high frequencies, highlighted for the first time the concomitant effects of the strain rate, memory of the chain alignment and self-heating.

The Behavior of Carbon Black-Filled Natural Rubber under High Strain Rates3

2006 ◽  
Vol 34 (2) ◽  
pp. 119-134 ◽  
Author(s):  
Syeda A. Hussain ◽  
Michelle S. Hoo Fatt
Keyword(s):  
Tensile Strength ◽  
Carbon Black ◽  
Natural Rubber ◽  
Strain Rate ◽  
Characteristic Relaxation Time ◽  
Dynamic Tensile Strength ◽  
Extension Ratio ◽  
Strain Induced Crystallization ◽  
Quasistatic Loading ◽  
Induced Crystallization

Abstract Tensile tests were conducted to obtain the deformation and failure characteristics of unfilled natural rubber (NR) and natural rubber with 25, 50, and 75 phr of N550 carbon black filler under quasistatic and dynamic loading conditions. The quasistatic tests were performed on an electromechanical INSTRON machine, while the dynamic test data were obtained from tensile impact experiments using a Charpy impact apparatus. In general, the modulus of the stress-extension ratio curves increases with increasing strain rate up to about 407, 367, 346, and 360 s−1 for unfilled, and 25, 50, and 75 phr for filled NR, respectively. Above these strain rates, the unfilled and filled natural rubber stress-extension ratio curves remained unchanged. The modulus increased with increasing strain rate because there was little time for stress relaxation. Above a critical strain rate, no change in modulus was observed because the time of the experiment was short compared to the lowest characteristic relaxation time of the material. Dynamic stress-extension ratio curves did not have the very sharp upturn at break, which is observed from strain-induced crystallization in natural rubber under quasistatic loading. Strain-induced crystallization appeared to be suppressed at high rates of loading. In fact, the highest dynamic tensile strength for the 25- and 50-phr carbon black-filled natural rubbers was smaller than those under quasistatic loading, while the highest dynamic tensile strength of the 75-phr carbon black-filled NR was greater than that in the static test. This indicated that high amounts of carbon black fillers will impede strain-induced crystallization in natural rubber.

A comparison of the abilities of natural rubber (NR) and synthetic polyisoprene cis-1,4 rubber (IR) to crystallize under strain at high strain rates

2016 ◽  
Vol 18 (5) ◽  
pp. 3472-3481 ◽  
Author(s):  
Nicolas Candau ◽  
Laurent Chazeau ◽  
Jean-Marc Chenal ◽  
Catherine Gauthier ◽  
Etienne Munch
Keyword(s):  
Comparative Study ◽  
Natural Rubber ◽  
High Strain ◽  
Strain Rates ◽  
High Strain Rates ◽  
Synthetic Rubber ◽  
Strain Induced Crystallization ◽  
First Time ◽  
Induced Crystallization

In situ WAXS experiments combined with a thermodynamic approach allowed for the first time a comparative study of strain induced crystallization of natural and synthetic rubber at high strain rates.

Influence of strain rate and temperature on the onset of strain induced crystallization in natural rubber

2015 ◽  
Vol 64 ◽  
pp. 244-252 ◽  
Author(s):  
Nicolas Candau ◽  
Rabia Laghmach ◽  
Laurent Chazeau ◽  
Jean-Marc Chenal ◽  
Catherine Gauthier ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Strain Rate ◽  
Strain Induced Crystallization ◽  
Induced Crystallization

Strain-induced crystallization behaviour of natural rubbers from guayule and rubber dandelion revealed by simultaneous time-resolved WAXD/tensile measurements: indispensable function for sustainable resources

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 95601-95610 ◽  
Author(s):  
Yuko Ikeda ◽  
Preeyanuch Junkong ◽  
Takumi Ohashi ◽  
Treethip Phakkeeree ◽  
Yuta Sakaki ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Crystallization Behaviour ◽  
Time Resolved ◽  
Sustainable Resources ◽  
Strain Induced Crystallization ◽  
Induced Crystallization

Guayule and rubber dandelion natural rubbers are useful alternatives forHeveanatural rubber in terms of their strain-induced crystallization behaviours.

Role of strain rate in the strain-induced crystallization (SIC) of natural and synthetic isoprene rubber

2018 ◽  
Vol 51 (2) ◽  
pp. 221-226 ◽  
Author(s):  
Yuji Kitamura ◽  
Kiyoka Okada ◽  
Hiroyasu Masunaga ◽  
Masamichi Hikosaka
Keyword(s):  
Strain Rate ◽  
Strain Induced Crystallization ◽  
Induced Crystallization ◽  
Isoprene Rubber ◽  
Natural And Synthetic

Thermomechanics of strain-induced crystallization in natural rubber under cyclic loading

PAMM ◽  
2017 ◽  
Vol 17 (1) ◽  
pp. 493-494
Author(s):  
Lutz Zybell ◽  
Jan Domurath ◽  
Konrad Schneider
Keyword(s):  
Cyclic Loading ◽  
Natural Rubber ◽  
Strain Induced Crystallization ◽  
Induced Crystallization
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