A Study on Clay Particle Effect to the Mechanical Properties of Pultruded Composites Under Shear Loading

2007 ◽  
Author(s):  
J. Y. Park ◽  
T. Fay ◽  
T. Davis
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behavior ◽  
Glass Fiber ◽  
Polymer Composites ◽  
Shear Loading ◽  
Experimental Program ◽  
Shape Effect ◽  
Particle Effect ◽  
Pultruded Composites ◽  
Hexagonal Platelet

A micromechanical investigation aimed at examining the mechanical behavior of pultruded polymer composites containing hexagonal platelet shaped fillers under shear loading is presented. Micromechanical models that account for the presence of inhomogeneities such as the clay fillers and voids in matrix materials were developed to estimate the inplane shear properties. The analytical results were obtained based on the consideration of shape effect of filler and void, and then were compared with the properties determined by an experimental program. For the experiments, pultruded polymer composites containing clay fillers and voids as well as E-glass fiber and vinylester resin were selected, analyzed and tested under shear loading. The effects of the volume fractions of the constituents on the mechanical properties of the composites were also investigated.

scholarly journals Thermoplastic Reaction Injection Pultrusion for Continuous Glass Fiber-Reinforced Polyamide-6 Composites

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 463 ◽  
Author(s):  
Ke Chen ◽  
Mingyin Jia ◽  
Hua Sun ◽  
Ping Xue
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
High Speed ◽  
Flexural Modulus ◽  
Polyamide 6 ◽  
Thermoplastic Composites ◽  
Fiber Reinforced ◽  
Pultrusion Process ◽  
Glass Fiber Reinforced ◽  
Pultruded Composites

In this paper, glass fiber-reinforced polyamide-6 (PA-6) composites with up to 70 wt% fiber contents were successfully manufactured using a pultrusion process, utilizing the anionic polymerization of caprolactam (a monomer of PA-6). A novel thermoplastic reaction injection pultrusion test line was developed with a specifically designed injection chamber to achieve complete impregnation of fiber bundles and high speed pultrusion. Process parameters like temperature of injection chamber, temperature of pultrusion die, and pultrusion speed were studied and optimized. The effects of die temperature on the crystallinity, melting point, and mechanical properties of the pultruded composites were also evaluated. The pultruded composites exhibited the highest flexural strength and flexural modulus, reaching 1061 MPa and 38,384 MPa, respectively. Then, effects of fiber contents on the density, heat distortion temperature, and mechanical properties of the composites were analyzed. The scanning electron microscope analysis showed the great interfacial adhesion between fibers and matrix at 180 °C, which greatly improved the mechanical properties of the composites. The thermoplastic reaction injection pultrusion in this paper provided an alternative for the preparation of thermoplastic composites with high fiber content.

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