scholarly journals EFFECT OF PRESS DISPLACEMENT ON IMPREGNATION PROPERTIES IN MELTED THERMOPLASTIC-RESIN TRANSFER MOLDING OF CONTINUOUS FIBER REINFORCED THERMOPLASTIC COMPOSITES

2020 ◽  
Author(s):  
KAZUTO TANAKA ◽  
MOMOKA ASANO ◽  
TSUTAO KATAYAMA ◽  
MASATAKA KAWAGUCHI
Keyword(s):  
Resin Transfer Molding ◽  
Thermoplastic Composites ◽  
Fiber Reinforced ◽  
Thermoplastic Resin ◽  
Continuous Fiber ◽  
Transfer Molding

Effect of Press Condition on the Mechanical Properties of GFRTP Molded by the Melted Thermoplastic-Resin Transfer Molding

2018 ◽  
Vol 774 ◽  
pp. 367-372
Author(s):  
Kazuto Tanaka ◽  
Akihiro Hirata ◽  
Tsutao Katayama
Keyword(s):  
Mechanical Properties ◽  
Shell Structure ◽  
Low Cost ◽  
Resin Transfer Molding ◽  
Outer Shell ◽  
Fiber Reinforced ◽  
Thermoplastic Resin ◽  
Transfer Molding ◽  
Reinforced Thermoplastics ◽  
Fiber Reinforced Thermoplastics

The application of Fiber Reinforced Thermoplastics (FRTP) is expected to reduce the weight of automobiles. The press and injection hybrid molding method was developed to mold FRTP with high strength and high stiffness by giving complicated shapes such as ribs and bosses to the outer shell structure of FRTP with continuous fiber. However, as this method uses high-cost FRTP laminated sheets, it is necessary to develop a low-cost FRTP manufacturing process. In this study, we aim at the development of Melted Thermoplastic-Resin Transfer Molding (MT-RTM) to mold FRTP with complicated shape at low cost by injecting melted short fiber reinforced thermoplastics into dry fabric. The effects of press condition on the mechanical properties of GFRTP molded by MT-RTM were clarified by bending tests. GFRTP molded at high mold temperature and high closing speed showed high mechanical properties because of good impregnation of injection resin into continuous fabric in the outer shell structure.

Impacts of thermoplastics content on mechanical properties of continuous fiber-reinforced thermoplastic composites

2021 ◽  
Vol 216 ◽  
pp. 108859
Author(s):  
Dong-Jun Kwon ◽  
Neul-Sae-Rom Kim ◽  
Yeong-Jin Jang ◽  
Hyun Ho Choi ◽  
Kihyun Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermoplastic Composites ◽  
Fiber Reinforced ◽  
Continuous Fiber

Joining Parameters and Handling System for Automated Subpreform Assembly

2016 ◽  
Vol 840 ◽  
pp. 66-73
Author(s):  
Jürgen Fleischer ◽  
Fabian Ballier ◽  
Matthias Dietrich
Keyword(s):  
Resin Transfer Molding ◽  
Large Series ◽  
Assembly Process ◽  
Fiber Reinforced ◽  
Processing Efficiency ◽  
Handling System ◽  
Transfer Molding ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Automated Line

The production and processing of fiber-reinforced plastics (FRP) is constantly increasing in industry. A commonly used method is resin transfer molding (RTM). FRP components are produced for large series by now. Therefore, the aspect of processing efficiency is becoming more and more important. The semi-finished product can be better exploited, for example, if large preforms were composed of single subpreforms. These subpreforms are easier to drape and can be produced within an automated line. Consequently, the necessary assembly of the subpreforms needs to be automated as well. This way, the process can be made time and resource efficient. The article that follows now will focus more closely on a concept that deals with the handling and subsequent assembling of subpreforms. Furthermore, the variables that can be adjusted for the assembly process are examined and their influence on the resulting connection quality is shown.

Potentiality of Continuous Fiber Reinforced Thermoplastic Composites

2021 ◽  
pp. 408-412
Author(s):  
Koji Kameo ◽  
Georg Bechtold ◽  
Hiroyuki Hamada ◽  
Klaus Friedrich
Keyword(s):  
Thermoplastic Composites ◽  
Fiber Reinforced ◽  
Continuous Fiber

scholarly journals Multiscale Composites: Assessment of a Feasible Manufacturing Process

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
R. Volponi ◽  
P. Spena ◽  
F. De Nicola ◽  
L. Guadagno
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Manufacturing Process ◽  
Resin Transfer Molding ◽  
Fiber Reinforced ◽  
Transfer Molding ◽  
Macro Scale ◽  
Multiscale Composite ◽  
The Matrix ◽  
Carbon Fiber Reinforced

A very interesting field of research on advanced composite materials is the possibility to integrate new functionalities and specific improvements acting on the matrix of the composite by means of a nanocharged resin. In this way, the composite becomes a so-called “multiscale composite” in which the different phases change from nano to macro scale. For example, the incorporation of nanoscale conductive fillers with intrinsically high electrical conductivity could allow a tailoring of this property for the final material. The properties of carbon nanotubes (CNT) make them an effective candidate as fillers in polymer composite systems to obtain ultralight structural materials with advanced electrical and thermal characteristics. Nevertheless, several problems are related to the distribution in the matrix and to the processability of the systems filled with CNT. Existing liquid molding processes such as resin transfer molding (RTM) and vacuum-assisted resin transfer molding (VARTM) can be adapted to produce carbon fiber reinforced polymer (CFRP) impregnated with CNT nanofilled resins. Unfortunately, the loading of more than 0.3-0.5% of CNT can lead to high resin viscosities that are unacceptable for such kind of processes. In addition to the viscosity issues that are related to the high CNT content, a filtration effect of the nanofillers caused by the fibrous medium may also lead to inadequate final component quality. This work describes the development of an effective manufacturing process of a fiber-reinforced multiscale composite panel, with a tetra-functional epoxy matrix loaded with carbon nanotubes to increase its electrical properties and with GPOSS to increase its resistance to fire. A first approach has been attempted with a traditional liquid infusion process. As already anticipated, this technique has shown considerable difficulties related both to the low level of impregnation achieved, due to the high viscosity of the resin, and to the filtration effects of the dispersed nanocharges. To overcome these problems, an opportunely modified process based on a sort of film infusion has been proposed. This modification has given an acceptable result in terms of impregnation and morphological arrangement of CNTs in nanofilled CFRP. Finally, the developed infiltration technique has been tested for the manufacture of a carbon fiber-reinforced panel with a more complex shape.

Dynamic mechanical properties of sisal fiber reinforced polyester composites fabricated by resin transfer molding

2009 ◽  
Vol 30 (6) ◽  
pp. 768-775 ◽  
Author(s):  
P.A. Sreekumar ◽  
Redouan Saiah ◽  
Jean Marc Saiter ◽  
Nathalie Leblanc ◽  
Kuruvilla Joseph ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Resin Transfer Molding ◽  
Dynamic Mechanical Properties ◽  
Sisal Fiber ◽  
Fiber Reinforced ◽  
Transfer Molding ◽  
Dynamic Mechanical ◽  
Polyester Composites
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