Rubbers, mechanical properties of filled

The existing concepts of the filler network breakdown and reformation appear to be adequate in describing the deformation-dependence of dynamic mechanical properties of filled rubbers. The different approaches suggest in a common man-... [Pg.40]

If structure is rather easy to define on the basis of MET images, it is much more difficult to measure it quantitatively. Nevertheless, the determination of structure is of primary importance because strueture defines the aetual volume of the filler in the mix and therefore the level of strain amplifieation of the deformable phase (see Mechanical Properties of Filled Rubbers ). [Pg.389]

MECHANICAL PROPERTIES OF FILLED RUBBERS 8.5.1 Mechanical Properties in Green State... [Pg.402]

IV. The Mix A Nanocomposite of Elastomer and Filler V. Mechanical Properties of Filled Rubbers... [Pg.367]

Physical and mechanical properties of filled rubber composites are strongly influenced by chemical nature, microstructure and molecular weight of the... [Pg.682]

Aranguren MI, Mora E, Macosko CW, Saam J (1994) Rheological and mechanical properties of filled rubber silica-silicone. Rubber Chem Technol 67 820... [Pg.58]

M.l. Aranguren, E. Mora, C. W. Macosko, and J. Saam. Rheological and mechanical properties of filled rubber siUca-siUcone. Rubb. Chem. TechnoL, 67,820-833,1994. [Pg.183]

This paper is devoted to the study of a part of the complex phenomena of reinforcement, namely the behavior of the host elastomer in the presence of filler particles. The results of solid state NMR experiments and some other methods for filled PDMS are reviewed. The short-range dynamic phenomena that occur near the filler surface are discussed for PDMS samples filled with hydrophilic and hydrophobic Aerosils. This information is used for the characterization of adsorption interactions between siloxane chains and the Aerosil surface. Possible relations between mechanical properties of filled silicon rubbers on the one hand and the network structure and molecular motions at flie PDMS-Aerosil interface on the other hand are discussed as well. [Pg.782]

It is generally believed that the nature of elastomer-filler interactions is of major importance for marked improvement in mechanical properties of the filled elastomers [39-44]. Adsorption of elastomer chains at the filler surface has a double effect on the enhancement of mechanical properties of filled elastomers. Firstly, the ability of filler particles to share deformation increases due to adsorption interactions between the filler particles and the host matrix. Secondly, these interactions provide significant amount of adsorption and topological junctions in the elastomer matrix outside the adsorption layer. It appears that less mobile chain units in the adsorption layer do not contribute directly to the rubber modulus, since the fiaction of PDMS chain units in this layer is only a few percent of the Aerosil content used in conunercial rubbers [7,8,12,21]. [Pg.802]

Considerable effort has been spent to explain the effect of reinforcement of elastomers by active fillers. Apparently, several factors contribute to the property improvements for filled elastomers such as, e.g., elastomer-filler and filler-filler interactions, aggregation of filler particles, network structure composed of different types of junctions, an increase of the intrinsic chain deformation in the elastomer matrix compared with that of macroscopic strain and some others factors [39-44]. The author does not pretend to provide a comprehensive explanation of the effect of reinforcement. One way of looking at the reinforcement phenomenon is given below. An attempt is made to find qualitative relations between some mechanical properties of filled PDMS on the one hand and properties of the host matrix, i.e., chain dynamics in the adsorption layer and network structure in the elastomer phase outside the adsorption layer, on the other hand. The influence of filler-filler interactions is also of importance for the improvement of mechanical properties of silicon rubbers (especially at low deformation), but is not included in the present paper. [Pg.804]

The properties of silica-filled rubber and composites depends primarily on the association of individual primary silica particles in the final material. The association of primary particles is believed to be a reversible process responsible for the physical properties of the filled material at low strain levels. This process is furthermore believed to an essential mechanism explaining the improvement of dynamic properties of filled rubber, as opposed to carbon black, silica particles are characterized by a strongly polar surface able to generate a strong interaction. The interaction is reversible and leads to reduced hysteresis. [Pg.706]

Mechanical Properties of Natural Rubber Composites Filled with Macro- and Nanofillers... [Pg.574]

V. THE EFFECT OF DISPERSION QUALITY ON THE DYNAMIC MECHANICAL PROPERTIES OF FILLED NATURAL RUBBER... [Pg.593]

Chanliau-Blanot MT, Nardiim M, Donnet JB, Papirer E, Roche G, Lau-renson P, Rossignol G (1989) Temperature dependence of the mechanical properties of EPDM rubber-polyethylene blends filled with aluminium hydrate particles. J Mater Sci 24 641-648... [Pg.266]

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