Fabrication of continuous carbon fiber reinforced polyamide 6 composites by means of self‐resistance electric heating

Abstract

In the conventional process of thermoplastic composites, a heating stage from the external heat source usually consumes a large amount of energy. To solve this problem, self‐resistance electric (SRE) heating of carbon fiber‐reinforcement was introduced to form a continuous carbon fiber reinforced polyamide 6 (CF/PA 6) composite based on film stacking technique in this paper. The temperature distribution was first measured to verify the temperature uniformity for SRE heating process. X‐ray photoelectron spectroscopy (XPS) was used to assess effects on the chemical properties of carbon fibers from SRE heating and conventional convective heating. To evaluate forming quality by SRE heating, the physical properties, crystallinity, and mechanical properties of CF/PA 6 composites were measured. The results show that the forming time and energy consumption of SRE heating process are significantly reduced compared with that of the traditional heating process because of fast heating/cooling rate. While fast heating/cooling rate of SRE heating process leads to a higher void content, which finally results in a slightly lower flexural strength and impact properties of composite laminates. It is clear that SRE heating technique is one of the energy‐ and cost‐effective ways to fabricate continuous carbon fiber reinforced thermoplastic composites although the forming quality is still improved in future investigation.

Enhanced mechanical and thermal properties of carbon fiber‐reinforced thermoplastic copoly(phthalazinone ether sulfone ketone) composites

“…Over the past few years, carbon fiber-reinforced thermoplastic composites (CFRTPs) have become cutting-edge materials due to the impacts of excellent performance in multiple fields such as military, aerospace, energy, and high-tech industries. [1][2][3][4] As the range of applications of CFRTPs in aviation, aerospace, energy and transportation continues to expand, there will be higher requirements for composites in terms of strength and thermal properties. [5,6] The development and application of nanomaterials and their related processing technologies have provided new ideas and methods to obtain high-performance CFreinforced composites.…”

Molecular Dynamics Simulation on the Effect of Self-Resistance Electric Heating on Carbon Fiber Surface Chemical Properties and Fiber/PP Interfacial Behavior

“…Nevertheless, due to high melting point and viscosity of thermoplastic resin, and the heating methods of external thermal source, the traditional molding methods mentioned above are excessively high energy consumption, low efficiency and even poor impregnation degree [11]. Self-resistance electric (SRE) heating [11][12][13], which conducts current directly to the carbon fiber (CF) and heats the surrounding resin by the joule heat generated, provides an effective way to fabricate cCFRTs.…”

Mechanical performance of a novel glass fiber reinforced maleic anhydride grafted polypropylene composite and its thermoplastic‐based fiber metal laminates

“…Nowadays, thermoplastic hybrid laminates are an alternative class of FMLs which offer the possibility for large‐scale production routes. [ 8 ] The thermoplastic matrix are typically made up of polyaminde (PA), polypropylene (PP), thermoplastic polyurethanes (TPU), and polyetheretherketone (PEEK), and so forth. [ 9 ] Among these materials, PP is one of the most popular resin in vehicle industry, possesses the advantage of low price, rapid processing, recyclability, and so forth.…”