Devulcanization of waste tires using a twin-screw extruder: The effects of processing conditions

2011 ◽  
Vol 17 (1) ◽  
pp. 64-69 ◽  
Author(s):  
Hamid Yazdani ◽  
Mohammad Karrabi ◽  
Ismaeil Ghasmi ◽  
Hamed Azizi ◽  
Gholam Reza Bakhshandeh
Keyword(s):  
Twin Screw Extruder ◽  
Processing Conditions ◽  
Screw Extruder ◽  
Waste Tires ◽  
Twin Screw

Dynamic Vulcanisation of EPDM-Based Thermoplastic Vulcanisates during Extrusion: Effect of Processing Conditions

2006 ◽  
Vol 514-516 ◽  
pp. 838-842 ◽  
Author(s):  
Ana Vera Machado ◽  
Martin van Duin ◽  
José A. Covas
Keyword(s):  
Mechanical Properties ◽  
Chemical Evolution ◽  
Twin Screw Extruder ◽  
Processing Conditions ◽  
Screw Extruder ◽  
Twin Screw

Dynamic vulcanisation of EPDM/PE blends using the resol/SnCl2 system was studied in a co-rotating twin screw extruder using a series of sampling devices. In order to study the effect of the processing conditions on chemical development along the extruder and on the mechanical properties of the extrudate material, the same recipe (having the same polyolefin/EPDM ratio) was compounded under different processing conditions. The results showed that both chemical evolution and mechanical properties depend on the processing conditions.

Study on the effect of processing conditions on the mechanical properties of PP/PC/SEBS ternary blends using Taguchi experimental analysis

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
O. Moini Jazani ◽  
A. Arefazar ◽  
M.H. Beheshty
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Young Modulus ◽  
Continuous Phase ◽  
Ternary Blend ◽  
Twin Screw Extruder ◽  
Processing Conditions ◽  
Ternary Blends ◽  
Screw Extruder ◽  
Twin Screw

AbstractIn this study, nine ternary polymer blends based on polypropylene (PP)/polycarbonate (PC)/styrene-ethylene-butylene-styrene triblock copolymer (SEBS) with the same compositions (70%wt PP, 15%wt PC, 7.5%wt SEBS and 7.5%wt maleic-anhydride grafted SEBS (SEBS-g-MAH) as a compatibilizer) are prepared using twin screw extruder at different levels of die temperature (235-245- 255 °C), screw speed (70-100-130rpm) and blending sequence (M1-M2-M3) . In M1 procedure, all of the components are dry blended and extruded simultaneously using Brabender twin-screw extruder. In M2 procedure, PC, SEBS, and SEBS-g- MAH minor phases are first pre-blended in twin screw extruder and after granulating are added to PP continuous phase in twin screw extruder. Consequently, in M3 procedure, PP and SEBS-g-MAH are first pre-blended and then are extruded with other components. The influence of these parameters as processing conditions on mechanical properties of PP/PC/SEBS ternary blends is investigated using L9 Taghuchi experimental design. The responding variables are impact strength and tensile properties (young modulus and yield stress) which are influenced by the morphology of ternary blend and the results are used to perform the analysis of variance (ANOVA). It is shown that the resulted morphology, tensile and impact strength are influenced by extrusion variables. Additionally the optimum processing conditions of ternary PP/PC/SEBS blends from Taguchi analysis was achieved.

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
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