Novel application of a thermoplastic composite with improved matrix-fiber interface

Armentia, Sara López de; Enciso, B.; Mokry, Guillermo; Abenójar, J.; Martínez, M. A.

doi:10.1016/j.jmrt.2019.09.022

Cited by 12 publications

(6 citation statements)

References 35 publications

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“…Compared with thermoset composite materials, high-performance thermoplastic composite materials have good thermal stability, stiffness and specific strength, its linear chain macromolecular structure also allows the material to maintain excellent toughness. [1][2][3][4] In addition, due to the excellent deformability of thermoplastic composite materials, it is now also used in fusion bonding technologies, such as induction welding, laser welding, resistance welding, etc. [4][5][6][7] At present, the commonly used thermoplastic composite materials are mainly polyphenylene sulfide (PPS), polyether ether ketone (PEEK) and polyetherimide (PEI).…”

Section: Introductionmentioning

confidence: 99%

“…12,13 In terms of aggregate structure, PPS is a semi-crystalline thermoplastic material with a symmetric rigid backbone composed of para-phenyl rings and sulfur atoms. 9,10 The relative density of the high-performance resin is 1.36 g/ cm 3 , the glass transition temperature (T g ) is about 90 C, and the melting temperature (T m ) is 285 C. 14 From the perspective of cross-linking characteristics, thermal cross-linking treatment of PPS resin can increase its molecular weight and partially cross-link the molecular chains, which has important research significance for modifying the performance of PPS resins. Cross-linking process are mostly observed above the melting temperature of PPS, which is 285 C, and when the temperature is higher than 350 C, destructive high level of cross-linking will occur.…”

Section: Introductionmentioning

confidence: 99%

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Effect of isothermal heat treatment on crystallinity, tensile strength and failure mode of CF/PPS laminate

Liu

Zhou

Wang

2020

High Performance Polymers

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The present work concentrates on the crystallinity, tensile strength and failure mode of CF/PPS laminate subjected to isothermal heat treatment of different temperatures and time periods. Results show that in the range of 100–210°C and 1–3 hours, with the increase of heat treatment temperature and time, both crystallinity and tensile strength of CF/PPS laminate increase firstly then decrease. Under the condition of 150°C-2 hours treatment, the CF/PPS has the optimal crystallinity level of 65.3% and the optimal tensile strength with a value of 718.2 MPa. Compared with the as-received specimen without heat treatment, the crystallinity and tensile strength have been increased by 46.4% and 15.3%, respectively. A laser confocal microscope has been used to observe and analyze the fracture morphologies of the specimens, results show that the failure modes of the specimens under conditions of 100°C and 150°C isothermal heat treatment are fiber extraction and fiber breakage, respectively, and both are AGM, while that of 210°C is debonding and delamination, which is DGM.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of isothermal heat treatment on crystallinity, tensile strength and failure mode of CF/PPS laminate

Liu

Zhou

Wang

2020

High Performance Polymers

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“…8–11 Not only that, LFRT has been widely used in construction, electrical appliances, aerospace and other fields. 12–15…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10][11] Not only that, LFRT has been widely used in construction, electrical appliances, aerospace and other fields. [12][13][14][15] LFRT is a bridge between continuous fiber reinforced thermoplastic and short fiber reinforced thermoplastic (SFRT), its higher aspect ratio of fiber provides better mechanical properties than equivalent SFRT, but retains the attractive possibility of using traditional injection-molding process. [16][17][18][19][20] Studies have shown that in order to effectively improve the mechanical properties of the products, the fiber length must be greater than the critical length.…”

Section: Introductionmentioning

confidence: 99%

An effective model for fiber breakage prediction of injection-molded long fiber reinforced thermoplastics

Kang

Huang

Zhang

et al. 2020

Journal of Reinforced Plastics and Composites

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Fiber length is an important factor affecting the mechanical properties of long fiber reinforced thermoplastic (LFRT). When LFRT is processed by injection molding, the strong shear flow usually leads to severe fiber breakage. Therefore, it is a crucial issue to reduce the loss of fiber length as much as possible during composite molding. Current work focused on constructing an effective model for predicting fiber breaking caused by shear stress during melt filling. Based on the Oseen formula, the disturbance of liquid flow caused by a single external force was studied, and the force acceptance formula of fiber immersed in flow field was derived. A mechanical model for characterizing the degree of fibers buckling and breaking and the shear stress was constructed by the Euler buckling criterion. To verify the model, glass fiber reinforced polypropylene (GF/PP) composites with initial fiber length of 3 mm and 6 mm was subjected to shear at the specific shear rate by using a rotating rheometer. The length of GF after sheared was measured by fiber length distribution analyser. The breaking ratio of fibers was predicted using the new model, and the predicted results were in good agreement with experiment, although more comparisons with experiments are necessary.

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“…Plasma treatment has become one of the most effective methods used to modify the structural characteristics of polymeric films. 4 Furthermore, plasma irradiations lead to improvement in mechanical, surface characteristics and adhesion properties of polymeric films. In compared to alternative chemical techniques, modification polymer surface by plasma irradiation provide a potential pathway for improved surface efficiency.…”

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confidence: 99%

Plasma-Induced Modifications on High Density Polyethylene and Polyethylene Terephthalate

Abdeltwab

2022

ECS J. Solid State Sci. Technol.

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This work presents a comprehensive study of high-density polyethylene (HDPE) and polyethylene terephthalate (PET) surface properties after exposure to 1.5, 3, 4.5, and 6 min oxygen (O2) plasma. The polymer surface structure was analyzed by Raman spectroscopy, which revealed surface restructuring modifications. The contact angle of HDPE and PET decreased gradually, and the work of adhesion was improved with O2 plasma. The water contact angle was reduced from 61.6o to 36.3° for HDPE and from 72.4o to 37.5° for PET by increasing plasma time from 1.5 to 6 min. The surface free energy is enhanced from 27.8 to 69.0 mJ/m2 for HDPE and from 29.8 to 67.2 mJ/m2 for PET, when the plasma time increased from 0 to 6 min. The polar groups significantly reduced the hydrophobicity of the irradiated films, and consequently the surface wettability was improved. The results show observed improvement in surface properties of HDPE and PET polymeric films to be use in different applications such as printings, coatings, and optoelectronics

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Novel application of a thermoplastic composite with improved matrix-fiber interface

Cited by 12 publications

References 35 publications

Effect of isothermal heat treatment on crystallinity, tensile strength and failure mode of CF/PPS laminate

Effect of isothermal heat treatment on crystallinity, tensile strength and failure mode of CF/PPS laminate

An effective model for fiber breakage prediction of injection-molded long fiber reinforced thermoplastics

Plasma-Induced Modifications on High Density Polyethylene and Polyethylene Terephthalate

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