Characterization of injection-molded high-strength/high-stiffness thermoplastic hybrid materials containing thermotropic liquid crystal polymer (LCP), polyphenylene sulfide (PPS) with carbon fibers

Kim, Myung‐Hyun; Kim, Sung-Han; Kim, Byung Sun; Wee, Jung-Wook; Choi, Byoung Ho

doi:10.1016/j.compscitech.2018.10.001

Cited by 10 publications

(4 citation statements)

References 26 publications

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“…To make better use of this material, there are also some fundamental references regarding crystallization behaviors of PPS materials [10][11][12][13]. For example, Furushima et al [14] studied crystallization/melting kinetics of PPS and they found that the half-time crystallization of isothermally meltcrystallized PPS showed a downward convex curve with a minimum at 160°C.…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal aging on crystallization behaviors and dynamic mechanical properties of glass fiber reinforced polyphenylene sulfide (PPS/GF) composites

et al. 2020

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In this study, the main purpose is to systematically evaluate isothermal and non-isothermal crystallization behavior of short glass fiber-reinforced polyphenylene sulfide polymer composites (PPS/GF) by a wide range of commonly applied models and also to preciously discuss the crystallization evolution and dynamic mechanical properties together with the consideration of thermal aging effects. Some interesting progress concerning this study can be concluded as follows: the Avrami model was used to examine the isothermal crystallization behavior of PPS/GF and the Avrami plot results exhibit that the isothermal crystallization contains primary and second crystallization process. In terms of non-isothermal crystallization, the Jeriorny model and Mo model could describe the mechanism of nucleation and crystal growth of PPS/GF material under study. Also, the activation energy of non-isothermal crystallization is calculated (−58.78 kJ/mol) by Kissinger method. Another important aspect is that thermal aging has an obvious effect on crystallization behaviors of PPS under study. The degree of crystallinity increases from 44% (virgin sample) to 56% after 96 h of aging at 200°C. After a long period of oxidation up to 1080 h at 200°C, the crystallinity degree decreases to 36.6% due to thermo-oxidation effect. DMA results imply that thermal aging may lead to more crosslinking reactions and result into more restriction of molecule mobility in PPS composite materials.

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Section: Introductionmentioning

confidence: 99%

Effect of thermal aging on crystallization behaviors and dynamic mechanical properties of glass fiber reinforced polyphenylene sulfide (PPS/GF) composites

et al. 2020

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“…The drawbacks of PPS primarily revolve around its limited toughness, prompting the exploration of two commonly employed methods to address this issue. Firstly, the blending of PPS with other polymer materials to enhance its toughness is a popular approach, with examples including combinations like LCP/PPS, 8,9 nylon 66/PPS, 10 and PTFE (polytetrafluoroethylene)/PPS 11 . Alternatively, another method involves the incorporation of reinforcing fiber materials such as glass fibers (GFs) 12 and carbon fibers 13 into PPS, providing a strengthening and toughening effect.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties of polyphenylene sulfide and liquid crystal polymer composites by interfacial bonding capacity of graft‐modified graphene oxide and glass fibers

Xu,

Guan,

et al. 2024

Polymers for Advanced Techs

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The aim of this study is to broaden the potential applications of polyphenylene sulfide (PPS) by incorporating graphene oxide (GO)‐grafted glass fiber (GF) to enhance the mechanical properties of liquid crystal polymer (LCP)/PPS composites. The surface of GF was modified using γ‐Aminopropyltriethoxysilane (KH550), allowing for the grafting of GO. Subsequently, GO‐GF/LCP/PPS composites were prepared through extrusion injection molding. The properties of the composites were evaluated using scanning electron microscopy, differential scanning calorimetry, and thermogravimetric analysis. The findings indicate that the interfacial adhesion between GF and composites is significantly improved with the addition of GO, The mass fractions of GO used were 0.1%, 0.5%, and 0.7%. The incorporation of GO‐grafted GF proves to be an effective approach in enhancing the tensile and flexural strengths of LCP/PPS composites. Additionally, a reduction in wear volume and tribological coefficient is observed compared to composites without GO‐treated GF. Notably, when the GO content is 0.5 wt%, the mechanical properties of the composites show significant improvement, with a 50% increase in impact strength compared to the composite without GO, and a decrease in friction coefficient from 0.28 to 0.22.

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“…Thermotropic liquid crystal polymer (LCP) resin features good fluidity and excellent mechanical performance, 25 stands out among a wide range of engineering polymers. 26 Particularly, during the process of melt extrusion, molecular chains of LCP tend to orientate and form microfiber structure, which can facilitate processing. 27–34 What's more, the addition of LCP can also improve the degree of crystallinity of polymer and thus improve the mechanical performance, which is widely used as additive in many polymer systems.…”

Section: Introductionmentioning

confidence: 99%

Effects of liquid crystal polymer (LCP) on the structure and performance of PEEK/CF composites

Song

Wang

et al. 2022

RSC Adv.

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Characterization of injection-molded high-strength/high-stiffness thermoplastic hybrid materials containing thermotropic liquid crystal polymer (LCP), polyphenylene sulfide (PPS) with carbon fibers

Cited by 10 publications

References 26 publications

Effect of thermal aging on crystallization behaviors and dynamic mechanical properties of glass fiber reinforced polyphenylene sulfide (PPS/GF) composites

Effect of thermal aging on crystallization behaviors and dynamic mechanical properties of glass fiber reinforced polyphenylene sulfide (PPS/GF) composites

Enhanced mechanical properties of polyphenylene sulfide and liquid crystal polymer composites by interfacial bonding capacity of graft‐modified graphene oxide and glass fibers

Effects of liquid crystal polymer (LCP) on the structure and performance of PEEK/CF composites

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