Effect of screw configuration on the dispersion of nanofillers in thermoset polymers
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Gangadhar Angadi
,
Sridhar Ramakrishna
Abstract
This paper deals with the study of screw configuration for dispersing nanofillers in thermoset polymers using an intermesh co-rotating twin screw extruder. The influence of kneading elements on the dispersion of nanoclay in epoxy was examined using 10 different screw configurations. Nanoclay was dispersed in epoxy at a barrel temperature of 5°C and a screw speed of 100 rpm. The combination of right hand kneading block and three/four lobed kneading blocks resulted in uniform dispersion of nanofiller. Positive staggered angle with right hand kneading elements yielded uniform dispersion of the nanofiller. Mechanical properties of epoxy nanocomposites processed with these configurations were better than those of neat epoxy. Excessive shear was associated with four lobed kneading block (4KB)/4KB configuration and hence degradation of polymers leading to shorter chains, whereas inadequate shearing in neutral kneading block (NKB)/NKB configuration led to agglomerations. These observations were evidenced by scanning electron microscopy (SEM) and X-ray diffraction (XRD).
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original articles
- 3D printing of hydroxyapatite polymer-based composites for bone tissue engineering
- Studies on the effects of 4,4′-dihydroxyphenyl on crystallization and melting behavior of poly (butylene terephthalate)
- Effect of the particulate morphology of resin on the gelation process of PVC plastisols
- Effect of aluminum nitride concentration on different physical properties of low density polyethylene based nanocomposites
- Application of polyurethane membrane with surface modified ZSM-5 for pervaporation of phenol/water mixture
- Synergistic effects of hybridization of carbon black and carbon nanotubes on the mechanical properties and thermal conductivity of a rubber blend system
- Electrical conductivity of carbon nanotube/polypropylene composites prepared through microlayer extrusion technology
- Mechanical performance and electromagnetic shielding effectiveness of composites based on Ag-plating cellulose micro-nano fibers and epoxy
- Effect of screw configuration on the dispersion of nanofillers in thermoset polymers
- Study of a novel co-rotating non-twin screw extruder in processing flame retardant polymer materials
- Thermal influences in the star-pre-distributor of a spiral mandrel die
Artikel in diesem Heft
- Frontmatter
- Original articles
- 3D printing of hydroxyapatite polymer-based composites for bone tissue engineering
- Studies on the effects of 4,4′-dihydroxyphenyl on crystallization and melting behavior of poly (butylene terephthalate)
- Effect of the particulate morphology of resin on the gelation process of PVC plastisols
- Effect of aluminum nitride concentration on different physical properties of low density polyethylene based nanocomposites
- Application of polyurethane membrane with surface modified ZSM-5 for pervaporation of phenol/water mixture
- Synergistic effects of hybridization of carbon black and carbon nanotubes on the mechanical properties and thermal conductivity of a rubber blend system
- Electrical conductivity of carbon nanotube/polypropylene composites prepared through microlayer extrusion technology
- Mechanical performance and electromagnetic shielding effectiveness of composites based on Ag-plating cellulose micro-nano fibers and epoxy
- Effect of screw configuration on the dispersion of nanofillers in thermoset polymers
- Study of a novel co-rotating non-twin screw extruder in processing flame retardant polymer materials
- Thermal influences in the star-pre-distributor of a spiral mandrel die
