Influence of some additives on rheological properties, viscosity, and dynamic mechanical properties in NR compounds

2004 ◽  
Vol 94 (1) ◽  
pp. 332-344
Author(s):  
L. Ibarra ◽  
P. Posadas ◽  
M. Esteban-Martinez
Keyword(s):  
Mechanical Properties ◽  
Rheological Properties ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical

Study of effect of wood-flour content on mechanical, thermal, rheological properties and thermoformability of wood-polypropylene composites

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Deepti Marathe ◽  
Hemant Joshi ◽  
Pratiksha Kambli ◽  
Pramod Joshi
Keyword(s):  
Mechanical Properties ◽  
Rheological Properties ◽  
Wood Flour ◽  
Thickness Distribution ◽  
Flexural Modulus ◽  
Dynamic Mechanical Properties ◽  
Mechanical Analysis ◽  
Small Amplitude Oscillatory Shear ◽  
Polypropylene Composites ◽  
Dynamic Mechanical

Abstract Wood plastic composites (WPC) were made from polypropylene (PP), impact copolymer (ICP) and wood flour (WF) by varying the WF content from 10 to 40% with PP grafted maleic anhydride as a coupling agent. The effect of varying WF content was studied on rheological, thermal, mechanical properties and dynamic mechanical properties. Experimental small amplitude oscillatory shear (SAOS) data was compared with the Einstein–Batchelor and empirical Krieger–Dougherty relations. Significant dependence of mechanical and rheological properties on WF content was observed. Young’s modulus, flexural modulus and dynamic shear viscosity increased with WF content. Results of dynamic mechanical analysis (DMA) showed increase in storage modulus with WF content. Three millimeter thick compression molded composites sheets were thermoformed using axisymmetric molds with two draw depths. Sag observed visually during thermoforming decreased with increasing WF content. Components made from the composites showed close to uniform thickness distribution as compared to those from ICP.

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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