scholarly journals Flame Retardancy and Thermal Properties of PVC/ATH Composites Prepared by a Modular Intermeshing Co-rotating Twin Screw Extruder

2016 ◽  
Vol 51 (2) ◽  
pp. 147-153
Author(s):  
Hyeongsu Lee ◽  
Se-Ho Park ◽  
Jae-Yeul Lee ◽  
Yuri Park ◽  
Hobin Jeong ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Flame Retardancy ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw

Compatibilization Efficiency of Reactively Modified Poly(butylene succinate) as a Compatibilizer for Poly(butylene succinate) Composites

2015 ◽  
Vol 1119 ◽  
pp. 288-291 ◽  
Author(s):  
Vanalee Tansiri ◽  
Pranut Potiyaraj
Keyword(s):  
Thermal Properties ◽  
Maleic Anhydride ◽  
Glycidyl Methacrylate ◽  
Spectroscopic Analysis ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Melt Viscosity ◽  
Butylene Succinate ◽  
Grafting Reactions ◽  
Twin Screw

The modified poly (butylene succinate) (PBS), namely, PBS-g-MA and PBS-g-GMA were prepared in order to be used as a compatibilizer for PBS composites. The grafting of maleic anhydride (MA) or glycidyl methacrylate (GMA) onto PBS was carried out using a twin-screw extruder. The grafting reactions were confirmed by spectroscopic analysis. Comparing with MA, it was found that GMA can be effectively grafted on PBS. The PBS-g-GMA was successfully used for PBS composites to enhance thermal properties. Furthermore, it was found that the incorporation of compatibilizer increased the melt viscosity of PBS composites.

Study of the Disintegration of Poly (butylene adipate-co-terephthalate) and Starch Co-Extruded Materials

2012 ◽  
Vol 506 ◽  
pp. 331-334
Author(s):  
Pongsaks Siriyota ◽  
Yositar Rudeekit ◽  
Parichai Intaraksa ◽  
P. Chaiwutthinan ◽  
M. Tajan ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Constant Temperature ◽  
Starch Content ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Surface Morphologies

The disintegration behavior of biodegraded plastics materials including poly (butylene adipate-co-terephthalate) (Ecoflex), Ecoflex/starch blend, poly (butylene adipate-co-terephthalate) (Enpol) and Enpol/starch blend in controlled composting was described. The blends were compounded using a twin screw extruder with co-rotating mixing screw. The aerobic disintegration tests were carried out in the reactors under constant temperature at 58 + 2 °C for 90 days. During testing moisture, mixing and aeration of the samples were periodically determined and controlled according to ISO 20200:2004. The results showed that the percentage of disintegration of Ecoflex, Ecoflex/starch blend (50:50 %wt.), Enpol and Enpol/starch blend (50:50 %wt.) were 25.91%, 80.57%, 56.29% and 91.08%, respectively. It was also found that starch content facilitate the disintegration of the polymers. The morphologies and thermal properties of the residues were studied using SEM and TGA. It was found that the surface morphologies and the thermal properties results are in accordance with the biodisintegration degree.

Investigation of Thermal and Rheological Properties of Polypropylene and Montmorillonite (MMT) Nanocomposites

2015 ◽  
Vol 1105 ◽  
pp. 3-6
Author(s):  
A.A. Yussuf ◽  
M.A. Al-Saleh ◽  
S.T. Al-Enezi
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Rheological Properties ◽  
Low Frequency ◽  
Complex Viscosity ◽  
Nanocomposite Films ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Thermal Stability Of

The performances of PP/MMT nanocomposite (70μm thick films), in terms of thermal and rheological properties were investigated. A twin-screw extruder was used to compound PP, MMT, compatibilizer, and extruded nanocomposite films were collected for test. All results were compared and the influence of MMT contents on the final properties were observed and reported. The thermal properties of PP had improved by increasing MMT content from 0-3 phr. However at 4 phr thermal stability of the nanocomposite had slightly dropped. In terms of rhelogical properties, the addition of MMT to the PP blend increased the complex viscosity of the nanocomposites, particularly at low frequency regions.

Reactive Blending in a Twin Screw Extruder

1996 ◽  
Vol 11 (2) ◽  
pp. 139-146 ◽  
Author(s):  
A. De Loor ◽  
P. Cassagnau ◽  
A. Michel ◽  
L. Delamare ◽  
B. Vergnes
Keyword(s):  
Twin Screw Extruder ◽  
Reactive Blending ◽  
Screw Extruder ◽  
Twin Screw

An Improved Flow Simulation Model for a Tangential Counter-Rotating Twin Screw Extruder

1996 ◽  
Vol 11 (2) ◽  
pp. 109-114 ◽  
Author(s):  
D.-S. Bang ◽  
J. L. White
Keyword(s):  
Simulation Model ◽  
Flow Simulation ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw

Mechanical and thermal characterization of grafted PP-NCC nanocomposites

2019 ◽  
pp. 089270571987822
Author(s):  
Saud Aldajah ◽  
Mohammad Y Al-Haik ◽  
Waseem Siddique ◽  
Mohammad M Kabir ◽  
Yousef Haik
Keyword(s):  
Thermal Properties ◽  
Interfacial Adhesion ◽  
Thermal Characterization ◽  
Mechanical And Thermal Properties ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Three Point Bending ◽  
Twin Screw ◽  
Thermal Stability Of

This study reveals the enhancement of mechanical and thermal properties of maleic anhydride-grafted polypropylene (PP- g-MA) with the addition of nanocrystalline cellulose (NCC). A nanocomposite was manufactured by blending various percentages of PP, MA, and NCC nanoparticles by means of a twin-screw extruder. The influence of varying the percentages of NCC on the mechanical and thermal behavior of the nanocomposite was studied by performing three-point bending, nanoindentation, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectroscopy tests. The novelty of this study stems on the NCC nanoparticles and their ability to enhance the mechanical and thermal properties of PP. Three-point bending and nanoindentation tests revealed improvement in the mechanical properties in terms of strength, modulus, and hardness of the PP- g-MA nanocomposites as the addition of NCC increased. SEM showed homogeneity between the mixtures which proved the presence of interfacial adhesion between the PP- g-MA incorporated with NCC nanoparticles that was confirmed by the FTIR results. DSC and TGA measurements showed that the thermal stability of the nanocomposites was not compromised due to the addition of the coupling agent and reinforced nanoparticles.

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