Influence of precipitated silica on dynamic mechanical properties and resistance to oil and thermal aging in CPE/NR blends

2005 ◽  
Vol 96 (6) ◽  
pp. 2218-2224 ◽  
Author(s):  
Sirichai Pattanawanidchai ◽  
Pongdhorn Saeoui ◽  
Chakrit Sirisinha
Keyword(s):  
Mechanical Properties ◽  
Thermal Aging ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical ◽  
Precipitated Silica

Thermal aging, physico‐mechanical, dynamic mechanical properties of chlorinated polyethylene/red mud composites

2020 ◽  
Vol 41 (11) ◽  
pp. 4740-4749
Author(s):  
Liyan Qiu ◽  
Ajit D. Phule ◽  
Yingxia Han ◽  
Shibao Wen ◽  
Zhen‐Xiu Zhang
Keyword(s):  
Mechanical Properties ◽  
Thermal Aging ◽  
Red Mud ◽  
Dynamic Mechanical Properties ◽  
Chlorinated Polyethylene ◽  
Dynamic Mechanical

Dynamic Mechanical Properties of Precipitated Silica Filled Rubber: Influence of Morphology and Coupling Agent

2003 ◽  
Vol 76 (1) ◽  
pp. 145-159 ◽  
Author(s):  
Laurence Ladouce-Stelandre ◽  
Yves Bomal ◽  
Lionel Flandin ◽  
Dominique Labarre
Keyword(s):  
Mechanical Properties ◽  
Dynamic Mechanical Properties ◽  
Mathematical Treatment ◽  
Interface Agents ◽  
Payne Effect ◽  
Dynamic Mechanical ◽  
Precipitated Silica ◽  
Vulcanized Rubber ◽  
Filled Rubber ◽  
Help Giving

Abstract Composites that incorporate precipitated silica into a vulcanized rubber were investigated for dynamic mechanical properties. Comparing different types of filler, it was found that the mean distance between particles did not alter Payne effect. On the contrary, the amount and morphology of the fillers played a major role on the macroscopic properties. The nature and amount of coupling or covering agents was also found to be an important parameter. A direct relationship between length and efficiency of interface agents was evidenced: longer silanes were more effective than shorter once independently from a covalent bounding to rubber. The set of studied parameters affecting Payne effect can be reduced to only two independents variables: the total amount of silica-rubber interface (a function of the amount of filler and its BET surface) and the quantity and nature of interface agent. From these data an attempt to relate the rubber to filler cohesion to Payne effect is proposed as well as a molecular mechanism derived from Maier and Göritz model. A mathematical treatment of the proposed mechanisms is currently being investigated that might help giving further insights on novel ways to further reduce Payne effect.

Effects of Thermal Aging on The Mechanical Properties of Natural Rubber

2003 ◽  
Vol 76 (4) ◽  
pp. 785-802 ◽  
Author(s):  
Joseph T. South ◽  
Scott W. Case ◽  
Kenneth L. Reifsnider
Keyword(s):  
Mechanical Properties ◽  
Thermal Degradation ◽  
Natural Rubber ◽  
Thermal Aging ◽  
Master Curve ◽  
Dynamic Mechanical Properties ◽  
Rubber Compound ◽  
Dynamic Mechanical ◽  
Rubber Vulcanizate

Abstract The focus of this research was to investigate the effect of thermal degradation upon the mechanical properties of a natural rubber compound. We examined both the quasi-static and dynamic mechanical properties of a natural rubber vulcanizate which had been subjected to isothermal, anaerobic aging. The thermal aging was conducted between the temperatures of 80 °C and 120 °C for times ranging from 3 to 24 days. The effect of thermal degradation was measured using the changes in the crosslink distribution of the vulcanizates as functions of time at temperature. A master curve relationship between the crosslink distribution of the vulcanizates due to thermal degradation and the static and dynamic mechanical properties has been developed. It was found that the both the quasi-static and dynamic mechanical properties correlated with the percentage of poly and monosulfidic crosslinks, where in general higher levels of polysulfidic crosslink gave rise to the highest mechanical properties.

Polyurethanes based on hydroxylated rapeseed oil: thermal and dynamic mechanical properties

2015 ◽  
Vol 37 (2) ◽  
pp. 162-167
Author(s):  
V.A. Vilensky ◽  
◽  
L.V. Kobrina ◽  
S.V. Riabov ◽  
Y.Y. Kercha ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rapeseed Oil ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical
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