Effects of carbon nanofibers on carbon fiber reinforced thermoplastics made with in situ polymerizable polyamide 6

Irisawa, Toshihira; Shibata, Masataka; Yamamoto, Tetsuya; Tanabe, Yasuhiro

doi:10.1016/j.compositesa.2020.106051

Cited by 19 publications

(6 citation statements)

References 28 publications

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“…They found an enhancement in the composite's interfacial and mechanical properties compared to uncoated SCF with 0.5 wt% as the highest concentration of GO to enhance the composite properties. Irisawa et al [79] studied the effect of nanofiber for CF-reinforced PA6 and concluded that nanofiber's addition increased the bending properties of such composites. These results showed that nanomaterials are a promising candidate for improving interfacial adhesion between thermoplastic and CF to achieve maximum mechanical properties.…”

Section: Physical Treatmentsmentioning

confidence: 99%

Comprehensive Review of the Properties and Modifications of Carbon Fiber-Reinforced Thermoplastic Composites

et al. 2021

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Carbon fiber-reinforced polymers are considered a promising composite for many industrial applications including in the automation, renewable energy, and aerospace industries. They exhibit exceptional properties such as a high strength-to-weight ratio and high wear resistance and stiffness, which give them an advantage over other conventional materials such as metals. Various polymers can be used as matrices such as thermosetting, thermoplastic, and elastomers polymers. This comprehensive review focuses on carbon fiber-reinforced thermoplastic polymers due to the advantages of thermoplastic compared to thermosetting and elastomer polymers. These advantages include recyclability, ease of processability, flexibility, and shorter production time. The related properties such as strength, modulus, thermal conductivity, and stability, as well as electrical conductivity, are discussed in depth. Additionally, the modification techniques of the surface of carbon fiber, including the chemical and physical methods, are thoroughly explored. Overall, this review represents and summarizes the future prospective and research developments carried out on carbon fiber-reinforced thermoplastic polymers.

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Section: Physical Treatmentsmentioning

confidence: 99%

Comprehensive Review of the Properties and Modifications of Carbon Fiber-Reinforced Thermoplastic Composites

et al. 2021

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“…In this process, the PI film works as a boundary layer to prevent the polymer matrix from forming direct contact with the metallic tools to achieve the release of the laminate from the metallic mold. 41 Despite the extensive application of these PI films in industry, the underlying release mechanism is not well understood. A deeper understanding of its release mechanism will help to reduce their costs which are much higher compared with that of other release mediums.…”

Section: Introductionmentioning

confidence: 99%

The modified boundary layer mechanism for the release between polyimide film and poly(ether ketone ketone) thermoplastics

Yang,

Dissevelt,

et al. 2024

J of Applied Polymer Sci

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Sticking between the thermoplastic polymer and metal tool is a crucial issue, as it determines whether the manufactured part can be ejected from the metal mold. Polyimide (PI) release films have been widely used in the processing of fiber‐reinforced thermoplastic polymer composites. Compared with other release mediums such as release agents, PI release film has a higher release efficiency. However, the underlying release mechanism is still not well understood which is essential to improve their performance further and reduce the cost. In this paper, poly(ether ketone ketone) (PEKK) polymer was melted and cooled down between two PI films. The surface morphologies and chemical compositions of the PI film and PEKK were characterized both before and after release using atomic force microscope, x‐ray photoelectron spectroscopy, contact angle measurements, and confocal microscopy. It showed that a thin PI layer was transferred from the PI release film to the PEKK surface during the release process. Based on these experimental results, a modified boundary layer mechanism is proposed as a hypothesis to describe the release mechanism of PI films. Our results give a fundamental understanding of how PI film works for the release of thermoplastics with high processing temperatures and may help to improve the performance and reduce the costs of existing PI films and may give guidance to the design of new release media.

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“…The process is typically performed below the melting point of PA6 (130-180 °C), resulting in a high degree of conversion (nearly 100%) and crystalline fraction (~40-45%) [15,16]. Previous research mainly focused on the type and ratio of initiator/activator [17][18][19], the impregnation of the reinforcing structure [20,21], and the analysis of the properties of the composites produced [21][22][23]. As with the conventional RTM (Resin Transfer Molding) process, a major drawback of this technology is that the properties of the matrix material (flame retardancy, UV stability, toughness, etc.)…”

Section: Introductionmentioning

confidence: 99%

Development and Analysis of an In-Mold Coating Procedure for Thermoplastic Resin Transfer Molding to Produce PA6 Composites with a Multifunctional Surface

Semperger

Török²,

Suplicz³

2022

Period. Polytech. Mech. Eng.

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We have developed a complex Thermoplastic Resin Transfer Molding procedure to create polyamide 6 composites and their multifunctional coatings in a single production cycle with low cycle time. The advantage of the new process is that it has low emission of volatile organic compounds due to the closed mold and the products can be recycled easily, decreasing the negative impact on the environment. In addition to developing the process steps and parameters, we produced samples with different curing time and fabric content of the base layer, waiting time before coating injection, surface thickness and titanium dioxide content of the surface layer. Then we analyzed the adhesion between the surface and base layers and the warpage of the complex part. SEM analysis proved that the reinforcement fabrics could be properly impregnated with the reactive thermoplastic system during the production of the base layer. Furthermore, we showed that the strength of the interlayer bonding can be improved when the base layer is properly polymerized in the first step. Using our method developed to assess warpage, we demonstrated that the warpage of the base layer can be reduced by applying the appropriate manufacturing parameters to the surface layer.

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Effects of carbon nanofibers on carbon fiber reinforced thermoplastics made with in situ polymerizable polyamide 6

Cited by 19 publications

References 28 publications

Comprehensive Review of the Properties and Modifications of Carbon Fiber-Reinforced Thermoplastic Composites

Comprehensive Review of the Properties and Modifications of Carbon Fiber-Reinforced Thermoplastic Composites

The modified boundary layer mechanism for the release between polyimide film and poly(ether ketone ketone) thermoplastics

Development and Analysis of an In-Mold Coating Procedure for Thermoplastic Resin Transfer Molding to Produce PA6 Composites with a Multifunctional Surface

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