The effect of organoclay on the mechanical properties and morphology of injection-molded polyamide 6/polypropylene nanocomposites

2003 ◽  
Vol 91 (1) ◽  
pp. 175-189 ◽  
Author(s):  
W. S. Chow ◽  
Z. A. Mohd. Ishak ◽  
U. S. Ishiaku ◽  
J. Karger-Kocsis ◽  
A. A. Apostolov
Keyword(s):  
Mechanical Properties ◽  
Polyamide 6 ◽  
Polypropylene Nanocomposites ◽  
Injection Molded

The Effect of Polyethylene-Octene Elastomer on the Morphological and Mechanical Properties of Polyamide 6/Polypropylene Nanocomposites

2005 ◽  
Vol 13 (8) ◽  
pp. 795-805 ◽  
Author(s):  
M.U. Wahit ◽  
A. Hassan ◽  
Z.A. Mohd Ishak ◽  
A. Abu Bakar
Keyword(s):  
Mechanical Properties ◽  
Polyamide 6 ◽  
X Ray Diffraction ◽  
X Ray ◽  
Melt Compounding ◽  
Modified Montmorillonite ◽  
Polypropylene Nanocomposites ◽  
Rubber Toughened ◽  
Izod Impact ◽  
Pp Blends

Rubber-toughened nanocomposites (RTNC) consisting of ternary blends of polyamide 6 (PA6), polypropylene (PP) and polyethylene-octene elastomer (POE) containing 4 wt% of organophilic modified montmorillonite were produced by melt compounding followed by injection moulding. The blend composition was kept constant (PA6/PP=70/30 parts by weight) while the POE content was varied between 5 and 20 wt%. Maleated PP (PP-g-MA) was used as compatibilizer. The morphology of the RTNC was studied by scanning electron microscopy and X-ray diffraction (XRD). The mechanical properties of RTNC were studied through tensile, flexural, Izod impact and fracture toughness properties. While the tensile and flexural properties were found to decrease with the increasing concentration of POE, the toughness was significantly enhanced as compared to the neat PA6/PP blends. In general, the blends containing 10-15 wt% of POE had the best balance of stiffness, strength and toughness. The addition of 30 wt% of PP in the PA6 matrix improved the compatibility between PA6 and the rubber phase. XRD established that the organoclay was well dispersed (exfoliated) and preferentially embedded in the PA6 phase.

Effect of sample thickness on the mechanical properties of injection-molded polyamide-6 and polyamide-6 clay nanocomposites

Polymer ◽  
2003 ◽  
Vol 44 (8) ◽  
pp. 2441-2446 ◽  
Author(s):  
Paola Uribe-Arocha ◽  
Christof Mehler ◽  
Judit E Puskas ◽  
Volker Altstädt
Keyword(s):  
Mechanical Properties ◽  
Polyamide 6 ◽  
Sample Thickness ◽  
Clay Nanocomposites ◽  
Injection Molded

scholarly journals The Effect of Rubber Type and Rubber Functionality on the Morphological and Mechanical Properties of Rubber-toughened Polyamide 6/Polypropylene Nanocomposites

2006 ◽  
Vol 38 (8) ◽  
pp. 767-780 ◽  
Author(s):  
Mat Uzir Wahit ◽  
Azman Hassan ◽  
Zainal Ariffin Mohd Ishak ◽  
Abdul Razak Rahmat ◽  
Norhayani Othman
Keyword(s):  
Mechanical Properties ◽  
Polyamide 6 ◽  
Polypropylene Nanocomposites ◽  
Rubber Toughened

Experimental Study on the Warpage and Tensile Strength of Additively Manufactured Semi-Crystalline Polyamide 6

2019 ◽  
Author(s):  
Konstantin Struebig ◽  
Andreas Schröffer ◽  
Tim C. Lueth
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Tensile Tests ◽  
Polyamide 6 ◽  
High Tendency ◽  
Manufacturing Method ◽  
Crystalline Polymers ◽  
Basic Model ◽  
Molded Parts ◽  
Injection Molded

Abstract Semi-crystalline polymers offer great mechanical properties and are ubiquitously found in everyday life. Despite of this, they are not yet widespread among additive manufacturing processes, due to their high tendency to warp. This leads to unstable build processes and dimensionally inaccurate parts, which greatly reduces their usability. This paper describes the findings of an experimental study designed to identify relevant parameters that affect the warpage and investigate the influence of the manufacturing method on the mechanical properties of semi-crystalline PA6. The first experiment investigates the effect of water absorption over time, measuring weight and curling of 64 specimens over three weeks. The second part of this study focuses on the changes in geometry caused by the warpage by evaluating a basic model for simple part geometries. At last, a tension test was conducted and the results were compared to injection molded parts of the same material. The results indicate, that while the absorption of water plays an important role in the warpage of hydrophilic polymers like PA6, other environmental factors also have a significant influence. The model evaluation showed, that the warpage geometry of the tested parts can be approximated with only three parameters for very simple parts, if there are no irregularities in the manufacturing process. The tensile tests revealed, that the additively manufactured specimens reach up to 85.9% of the strength of the injection molded reference parts, most likely due to imperfect filling and reduced density. Overall, this study provides an insight into the challenges of additively manufacturing semi-crystalline polymers and the potential of PA6 as a tougher alternative to the common materials.

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