An Experimental Study of the Pultrusion of Carbon Fiber-Polyamide 12 Yarn

Abstract

The present study reports about the pultrusion of a carbon fiberreinforced PA12 yarn containing discontinuous carbon and polyamide fibers. This is the first attempt to pultrude this material. Rectangular cross sectional profiles have been successfully produced using a self-designed pultrusion line. In a series of experiments, the pultrusion parameters, such as preheating method, die temperature, and especially the pulling speed, which represents a determining factor regarding a potential industrial application, are varied.A complete characterization of each profile is conducted to examine the influence of processing parameters on the profile quality. The mechanical properties are evaluated by performing three-point bending as well as shear tests. The void content is also determined. The pulling speed seems to have the greatest influence on the profile quality. Under certain conditions of speed and temperature, the pultruded profiles exhibit good mechanical performance and a void content below 2%. The shear strength reacts most sensitively to the process parameter variations and can be used as a quality criteria.KEY WORDS: thermoplastic pultrusion, carbon fiber-polyamide 12 yarn.

Advances in Carbon Fiber Reinforced Polyamide-Based Composite Materials

“…al. [63] developed PA12 yarn having discontinuous carbon fiber. The threepoint bending and shear tests were performed to study the mechanical properties.…”

Manufacturing and Processing of Polymer Composites

“…In addition, thermoplastic matrix based composite pultrusion has been developed over the last 20 years. Due to the higher viscosity of thermoplastics in comparison to thermosets, the processing speed is about ten times slower in terms of thermoplastic pultrusion [11].…”

Development of an Additive Manufacturing System for the Deposition of Thermoplastics Impregnated with Carbon Fibers

“…Gaps in production methods have limited the widespread use of composite materials for other purposes. Recently, processing methods such as pultrusion, resin transfer molding (RTM), structural reaction injection molding (SRIM), compression molding compounding (SMC) and filament winding have been automated to achieve high production rates [4][5][6][7][8]. Some of the techniques are restricted to the use of thermosetting resins while others may use both thermoplastic and thermosetting resins.…”

“…Some of the techniques are restricted to the use of thermosetting resins while others may use both thermoplastic and thermosetting resins. Some of these techniques may use the continuous fibers as reinforcement while others are restricted to the use of short fiber reinforcements [4][5][6][7][8][9][10]. The processing of the thermoplastic matrix composites reinforced with long or continuous fibers causes constraints on the impregnation of the fibers due to the high viscosity that the thermoplastic matrices present [10].…”