Polyethylene and Poly(propylene)/Clay Nanocomposites

Journal of Thermoplastic Composite Materials

et al. 2016

In this article, the polypropylene (PP) nanocomposites containing nanoclay particles and basalt fiber (BF) are prepared in the presence of maleic anhydride grafted PP (PP- g-MA) as compatibilizing agent. The Charpy impact behavior of PP/PP- g-MA/clay nanocomposites and PP/PP- g-MA/Clay/BF nanocomposites at room temperature (25°C), cryogenic temperature (–196°C), and high temperature (120°C) is presented. The BFs prevented the PP matrix from plastic deformation, but the impact strength improvement of nanocomposites is obtained when nanoclay in the PP matrix resists the propagation of cracks. The fracture surfaces are examined with scanning electron microscopy (SEM).

Section: Introductionmentioning

confidence: 99%

Charpy impact behavior of clay/basalt fiber-reinforced polypropylene nanocomposites at various temperatures

Journal of Thermoplastic Composite Materials

et al. 2016

“…Several studies were conducted with various types of organoclays, clay concentrations, and compatabilizers. 5,6 Nanomer Õ and Cloisite Õ are the popular nanoclays available in the market. Cloisite additives are used in injection-molded parts, films, bottles, trays, blister packs, and wire and cable coatings.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of nanoclay reinforced polypropylene composites at cryogenic temperature

Journal of Reinforced Plastics and Composites

et al. 2012

Polymer–clay nanocomposites are a new class of materials which improve the properties at low levels of addition of nanoclay as compared with conventional filler composites. In this article, a comparative study on the mechanical behavior of nanoclay filled polypropylene composites at both room and cryogenic temperatures is presented. Nanoclays of 1–5% by weight are added to polypropylene matrix using maleic anhydride grafted polypropylene as compatibilizer. Polypropylene/clay nanocomposites are prepared by melt intercalation in a twin-screw extruder followed by injection molding. Composite properties such as tensile and impact at both room (25°C) and cryogenic (−196°C) temperatures are calculated. The addition of clay to polypropylene matrix showed a remarkable enhancement in the mechanical properties at temperatures of 25°C and −196°C. Nearly 36.4% and 17.6% increase in the Young’s modulus and about 45% and 62.5% increase in the impact strength are observed at both room and cryogenic temperatures, respectively. Scanning electron microscopy is used to assess the surface morphology of the fractured surfaces and dispersion of the nanoclay. The morphology of polypropylene/clay nanocomposites is also characterized by X-ray diffraction analysis and transmission electron microscopy.

“…Nanoclays are known to enhance properties of many polymers such as nylon 6, epoxy, polyethylene terephthalate, polyethylene and PP. This leads to better clarity, stiffness, thermal stability, barrier properties to moisture, solvents, flame and scratch resistances and dimensional stability in injection molded products [7]. A few systematic studies are done on the preparation and characterization of PP nanocomposites.…”

Section: Introducionmentioning

confidence: 99%

Tensile Properties of Clay/Polypropylene Nanocomposites at Cryogenic Temperature

et al. 2012

AMR

In this paper, the polypropylene (PP)nanocomposites containing 1, 3 and 5 wt % of nanoclay particles are prepared via direct melt mixing in the presence of maleic anhydride grafted PP (PP-g-MA) as compatibilizing agent. PP-g-MA is known to facilitate the dispersion of clay particles in a nonpolar PP matrix and to increase the adhesion between PP and the clay particles.The effect of different nanoclay contents on the PP composites are investigated for tensile characterization at both room temperature(RT) and cryogenic temperature (CT).The results showed that the cryogenic tensile strength, Young’s modulus, percentage of displacement at break and the energy absorptionat cryogenic temperature are all enhanced ascompared to the neat PP by the addition of clay at appropriate contents