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Carbon Fiber Reinforced Thermoplastics and Thermosetting Composites
Published in Sanjay Mavinkere Rangappa, Jyotishkumar Parameswaranpillai, Suchart Siengchin, Lothar Kroll, Lightweight Polymer Composite Structures, 2020
Thermoset polymer matrix includes polyesters, vinyl esters, epoxies, bismaleimides, cyanate esters, polyimides, and phenolics. It has been observed that the epoxies, in the present scenario, are the most utilized resins for low and moderate temperatures. On the other hand, it has been observed that the polyesters and vinyl esters can be utilized at almost the same temperatures (like epoxies), and also are widely utilized for the commercial applications but are generally avoided for the high-performance composite applications because of their decreased properties (Composites, n.d.).
Joining and Repair
Published in P. K. Mallick, Processing of Polymer Matrix Composites, 2017
Matrix overheating: Since the thermal conductivity of PMCs is low, heat generated by drilling is not efficiently dissipated and the temperature of the composite material close to the hole increases. If the temperature rise is very high, it can cause considerable softening of the matrix in the composite. If the matrix is a thermoplastic polymer, it can start to melt. A thermoset polymer matrix may not melt, but can burn and char if the temperature increase is very high.
Effect of UV aging on the thermo-mechanical properties of C-B-A and G-B-A hybrid composites: A study using TMA
Published in Mechanics of Advanced Materials and Structures, 2023
Munise Didem Demirbas, Zekiye Erdogan
High-performance fiber-reinforced composites offer excellent strength and stiffness properties, but their relatively high material and manufacturing cost, and their brittle, catastrophic failure without sufficient warning, limit their use in high-volume applications such as mass-produced automotive and construction. To expand their use, the development of high-performance ductile or pseudo-ductile composites with safe failure mechanisms similar to metals, with detectable warning and a wide margin before final failure, is of significant interest. However, adding ductility to composite materials is challenging as both traditional constituents of high-performance long fiber-reinforced thermoset polymer matrix composites are brittle [1–3]. Researchers have investigated various approaches to improve the ductility of composites such as modified matrix systems, new ductile fibers, and modified composite architecture [4–5].
An overview of development and status of fiber-reinforced composites as dental and medical biomaterials
Published in Acta Biomaterialia Odontologica Scandinavica, 2018
FRC can be isotropic, orthotropic or anisotropic which means that material properties and dependent of the direction of the fibers: mechanical, optical, curing shrinkage and thermal properties of the FRC are dependent on the fiber quantity and orientation [72–82]. A high quality glass FRC material with continuous unidirectional glass fiber quantity of 65 vol% in well polymerized dimethacrylate thermoset polymer matrix provide high flexural strength of up to 1250 MPa [72]. No significant reduction of flexural strength and modulus of elasticity by hydrolytic effect of water even in long term water storage of up to 10 years of glass FRC occurs which demonstrates the hydrolytic stability of good quality glass fibers and their silane coupling agent mediated adhesion with the polymer matrix [74,75].
Fatigue behavior and self-heating mechanism of novel glass fiber reinforced thermoplastic composite
Published in Advanced Composite Materials, 2023
Mustafa Bakkal, Mete Kayihan, Azmi Timur, Zeynep Parlar, Canan Gamze Güleryüz Parasız, Aysu Hande Yücel, İbrahim Mehmet Palabıyık, Turgut Gülmez
Although composite materials with thermoset polymer matrix have been studied frequently during the literature search, it has been realized that research on composite materials with thermoplastic polymer matrix is not sufficient due to high heat treatment temperatures, high cost and advanced equipment, and complex preparation and manufacturing processes. It is aimed to close this gap in the literature with this paper. Also, the thermoplastic resin which is called Elium® is a novel recyclable material. The material can be cured by microwave and does not need any additives for fast curing with the microwave. It can be used directly in its current form. Microwave generators are integrated in the RTM method. Thanks to its fast curing feature, this enables it to be used in sectors such as the automotive sector, where tact times are short. At the same time, it is aimed to ensure and popularize the use of recyclable, lightweight, innovative materials with a life expectancy needed by the sectors [7]. Nevertheless, there are numerous fatigue studies have been done for thermoset-based composites, the researchers have not yet been done for materials with continuous glass fiber reinforced helium-based thermoplastic composites. Whether thermoplastic matrix composite materials can replace thermoset matrix composite materials will be evaluated in a wide range by comparing their mechanical, thermal, and fatigue properties [2,3,5]. However, the mechanical and fatigue properties of this continuous glass fiber-reinforced Elium® thermoplastic resin have not yet been clearly characterized. Furthermore, it was observed that the material was self-heated during the fatigue test and it was desired to estimate this rising temperature.