Mica as a Reinforcement for Plastics

Effect of Particle Size and Concentration on Mechanical and Electrical Properties of the Mica Filled PVC

“…Mahanwar Vol.9, No.9 percent increment with increase in concentration clearly indicate the dependence of particle size and its dispersion. Shepherd et al [7] have found that the use of mica increase stiffness, Young's modulus and dimensional stability of some common polymers. Addition of mica in polymer influences filler matrix which is responsible for variation in mechanical properties of composites.…”

“…As indicated by Gupta et al [9] strength reduction in mica filled PVC composite in relation with virgin (neat) PVC could be attributed to formation of micro cracks in the resin matrix due to the internal stresses developed during curing and difference in the thermal shrinkage of PVC and mica. It is most likely that the addition of the mica influence fiber/matrix adhesion, which is responsible for the mechanical property variation with mica content [7] . The interfacial shear strength is one of the most important parameter controlling strength and toughness of composites.…”

“…At higher loading of mica, it acts as an intramolecular plasticizer, where the mica molecules distributed in inter aggregate space. This hinders the polymer chain elongation and consequently reduces some dielectric properties [7] . From the Figure 8, it has been shown clearly that the dielectric strength of the mica filled PVC composite has been increasing with mica content up to 30 weight percent, as mica has good electric resistance and it slightly reduces after it.…”

Polyetheretherketone (PEEK) Composites Reinforced with Fly Ash and Mica

“…The commercial delamination of mica may be characterized as wet or dry according to whether the delamination is carried out in a dry state or water. Wet grinding preserves the natural luster and sheen of mica and is normally characterized by clean cut edges, high aspect ratios, smooth surface, and ability to disperse easily [8].…”

Preparation and properties of recycled HDPE/clay hybrids

“…Clay nanocomposites, especially nanoclay/polymer composites, exhibit dramatic increases in modulus, strength, barrier properties, flammability resistance, and heat resistance compared to conventional composites. [2][3][4][5][6][7][8] Because PE is hydrophobic and has poor miscibility with hydrophilic clay silicates, PE/clay hybrids are not easily prepared. In general, the clay is modified with alkylammonium groups to facilitate its interaction with PE, and the miscibility of PE with clay can be enhanced by introducing compatibilizers containing polar groups, such as maleated polyethylene (MAPE), and carboxylated PE.…”