Polypropylene composite material and its rheological and mechanical properties depending on the size of the filler CaCO 3

Fourth interdisciplinary scientific forum with international participation "New materials and promising technologies"

Bilalova, E.A.^1^2 ; Prut, E.V.^1 ; Kuznetsova, O.P.^1

Department of Chemical Physics, ICP RAS, Moscow, Russia^1

MIPT, Dolgoprudny, Russia^2

关键词: Constant shear;    Elongation at break;    Laser diffraction method;    Polypropylene composite;    Rheological and mechanical properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/525/1/012006/pdf
DOI  :  10.1088/1757-899X/525/1/012006

来源: IOP

【 摘 要 】

The main idea of this paper is to investigate the influence of the filler sizes on the important composite material's properties, such as viscosity, MFR, shear stress, elongation at break and Youngs modulus. Ten compositions of PP/CaCO 3 composites were prepared in a two-rotor mixer (Brabender) with calcium carbonate content o 5-25 wt. (%). Laser diffraction method was used to analyze sizes of the powder filler, considering it to be approximately spherical. Found out, that with an increase in the concentration of powder filler increases the value of Youngs modulus (E, MPa) and also there is a significant decrease in the elongation at break (, %), and the strength also decreases, but rather weakly. Viscosity showed different trends for both sizes at the dependence of concentration with constant shear stress.