Mechanical Properties of Cost-Effective Polypropylene Composites Filled with Red-Mud Particles

Akıncı, Akın; Akbulut, Hatem; Yılmaz, Feride Taşkın

doi:10.1177/096739110801600705

Cited by 23 publications

(23 citation statements)

References 22 publications

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“…Of organic fillers, carbon black (CB) have gained much attention in fabrication of polymeric composites, because CB reinforced composites are being exploited in many industrial and domestic appliances including self-regulating heating elements, current switching, fluid sensor, thermal controller, capacitors and electromagnetic interference shielding . However, research works found on filler reinforced polymer composites are mostly based on isotactic polypropylene (Akinci 2009, Mina et al 2010, though a few research works on filler loaded PE composites have been published (Ulutan et al 2000, Yuan et al 2003, Dang et al 2003, Luyt et al 2006. In addition, homogeneous dispersion of fillers in polymer matrix by melt blending has also been a challenging task.…”

Section: Introductionmentioning

confidence: 99%

Structures and mechanical properties of talc and carbon black reinforced high density polyethylene composites : Effects of organic and inorganic fillers

Parvin

Ullah

Mina

et al. 2013

J Bangladesh Acad Sci

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Organic filler like carbon black (CB) and inorganic filler like talc (T) with 0, 0.5, 1.0, 10, 20 and 40 wt% were separately loaded in high density polyethylene (HDPE) by the extrusion moulding method at 160 o C. Then, different sets of filler loaded HDPE composites were prepared using the compression moulding technique, and their structures and mechanical properties were characterized. The pure HDPE sample, as examined by the X-ray diffraction (XRD) technique, showed orthorhombic structure, which did not change either with filler types or with their concentration. The only variations found in the structure are the changes of crystallinity and crystallized size that depend on both types of fillers and their concentrations. Incorporation of CB in HDPE emphasizes the crystallinity and crystallized size more than that of T. The tensile strength of the composite decreases with the increase of both types of fillers, and this decrease is explained on the basis of Nielson model, which basically describes a poor interaction between filler and HDPE matrix. An increase of Young's modulus of 350% is observed with the increasing CB and T contents, representing an increase of the stiffness in the materials. Flexural strength increased with the increase of CB content but decreased with the increase of talc content. Although the microhardness was observed to increase with both types of fillers, the hardness value was 80% higher for CB loaded-composites than that of T at 40 wt% filler content. These findings strongly indicate that the compatibility of HDPE is better with organic filler than with inorganic one.

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Section: Introductionmentioning

confidence: 99%

Structures and mechanical properties of talc and carbon black reinforced high density polyethylene composites : Effects of organic and inorganic fillers

Parvin

Ullah

Mina

et al. 2013

J Bangladesh Acad Sci

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“…This causes a considerable plastic deformation of material. In can be asserted that the system of such composites has a low cohesive strength, which is corroborated by investigations [14][15][16][17][18]. The return of specimen to its original shape after unloading is evidence of elastic properties of material and hence of its high cohesion characteristics.…”

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confidence: 55%

A study of creep of epoxy composites with continuous fibers and modified fine filler in aggressive media

Букетов¹,

Stukhlyak²,

Levyts’kyi³

et al. 2011

Strength Mater

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The effect of the modification of a fine filler with an epoxy oligomer and compositions by ultraviolet irradiation on the creep of materials filled with basalt and glass cloths under the influence of aggressive media has been studied. It has been found that to reduce the creep of materials, two-layer epoxy composite "hybrid" materials containing glass and basalt cloths must be used. In order to improve the performance of composites, an ultraviolet-irradiated epoxy binder containing epoxy-oligomer-modified fine filler particles must be used as an interlayer.Introduction. One of the most important physicomechanical properties of epoxy composite materials (CM) and protective coatings based on them is creep under the influence of static and dynamic loads during the operation of basic equipment. The creep of materials is much enhanced by their exposure to aggressive media. It has been found that the properties of materials can be improved, and hence their creep under the influence of static and cyclic loads and temperature gradient can be reduced by using "hybrid" epoxy composites with continuous fibers, which have different physical nature, and cloths based on them [1]. Hybrid CMs with fibers regularly alternating in one layer of material (or each composite layer is formed with cloths of different type contained in it) are mainly used in the formation of composites with improved physicomechanical properties [1]. Note that glass, basalt, carbon, boron and metallic fibers or cloths are most frequently used in the formation of such composites and protective coatings based on them.The choice of oligomer binder is important in the formation of materials with improved performance, including those with low creep characteristics. It has been found that the use of an epoxy matrix upgrades the adhesion and cohesion properties of CMs, which mainly determine the performance in the case of the long-term use of coatings [2]. Moreover, it has been shown that to improve cohesive strength, fine fillers, which are previously modified with epoxy oligomer, must be added to the binder [3]. This surface modification of filler enhances its interaction with oligomer binder macromolecules. Later on, the treatment of epoxy compositions with modified particles with external energy fields, including ultraviolet irradiation (UVI), forms active radicals in oligomer, which improves interaction at the interface near the filler surface. In this case, a material with improved cohesion properties is formed; it is expedient to use it as an interlayer between cloths for hybrid CMs of different types. This makes it possible to reduce the creep of composites in the case of their use in aggressive media.Thus, the formation of the layer that is nearer to the substrate with damping and relaxation characteristics is important in the creation of two-layer coatings. In this case, the outer layer can perform other functions: corrosion resistance, wear resistance, thermal or heat conductivity, etc.The aim of the work is to study the effect of modifying fine fille...

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“…The value of ΔH 0 PP (Tm) has previously been reported to be 207 J/g for PP [40]. From Table 4, the weight fraction crystallinity was calculated to approximately 40 wt % for WEEEBR and TBV, while it was slightly lower for TBR.…”

Section: Thermal Propertiesmentioning

confidence: 83%

Mechanical and Thermal Characterization of Melt-Filtered, Blended and Reprocessed Post-Consumer WEEE Thermoplastics

Stenvall

Boldizar

2016

Recycling

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Abstract:A melt-blended and melt-filtered real post-consumer and recyclable waste electrical and electronic equipment plastics blend (WEEEBR) was studied, where the WEEEBR contained mainly acrylonitrile-butadiene-styrene copolymer (~40 wt %), high impact polystyrene (~40 wt %) and polypropylene (~10 wt %). The main aim was to better understand the influence of different reprocessing conditions on the mechanical and thermal properties of WEEEBR and to compare these properties with the corresponding properties of model material blends of samples from single screw extrusion, twin screw extrusion and injection molding. For all the reprocessing alternatives studied, WEEEBR was found to be processable and an acceptable surface character could be obtained within narrow processing condition windows. It was found in particular that the reprocessing conditions influenced the elongation at break of WEEEBR, and to a lesser extent also the width of the polypropylene melting temperature region. The highest yield stress and elongation at break of WEEEBR was obtained after twin-screw extrusion at low barrel temperatures (180-200˝C) and a low screw rotation rate (60 rpm). Injection molding produced brittle materials with low impact strength, possibly due to molecular orientation effects.

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Mechanical Properties of Cost-Effective Polypropylene Composites Filled with Red-Mud Particles

Cited by 23 publications

References 22 publications

Structures and mechanical properties of talc and carbon black reinforced high density polyethylene composites : Effects of organic and inorganic fillers

Structures and mechanical properties of talc and carbon black reinforced high density polyethylene composites : Effects of organic and inorganic fillers

A study of creep of epoxy composites with continuous fibers and modified fine filler in aggressive media

Mechanical and Thermal Characterization of Melt-Filtered, Blended and Reprocessed Post-Consumer WEEE Thermoplastics

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