The mechanical properties of unidirectional thermoplastic composites manufactured by a micro-braiding technique

Sakaguchi, Masashi; Nakai, Asami; Hamada, Hiroyuki; Takeda, Nobuo

doi:10.1016/s0266-3538(99)00175-x

Cited by 60 publications

(26 citation statements)

References 5 publications

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“…The tightly woven fabrics are typically the choice to maintaining fibre orientation during the manufacturing process and minimizing resin void size due to the shorter impregnation distance. Therefore, the laminar and crosswise flow of resin along and between the fibres, in between the yarns and fabric layers is easier [24,25]. Moreover, basket weave has higher quantity of interlace points per unit area compared to satin.…”

Section: Composite Porositymentioning

confidence: 99%

Characterization of thermoplastic natural fibre composites made from woven hybrid yarn prepregs with different weave pattern

Baghaei

Skrifvars

Berglin

2015

Composites Part A: Applied Science and Manufacturing

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Section: Composite Porositymentioning

confidence: 99%

Characterization of thermoplastic natural fibre composites made from woven hybrid yarn prepregs with different weave pattern

Baghaei

Skrifvars

Berglin

2015

Composites Part A: Applied Science and Manufacturing

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“…By now, glass fiber reinforced thermoplastics, for instance PP, PA, PET, etc., have been extensively investigated, [1][2][3][4][5][6][7][8][9] in particular, most of short glass fiber reinforced polymer composites have been industrialized. However, the glass fiber content in the marketed short fiber reinforced polymers is usually limited to 33 wt.-% with a Summary: Long glass fiber reinforced PA6 (LGF/PA6) prepregs were prepared by impregnating PA6 oligomer melt into reinforcing glass fiber followed by subsequent solid-state polymerization (SSP) to obtain LGF/PA6 composite pellets.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Mechanical Properties of Long Glass Fiber Reinforced PA6 Composites Prepared by a Novel Process

Han

Liu

2005

Macro Materials & Eng

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Summary: Long glass fiber reinforced PA6 (LGF/PA6) prepregs were prepared by impregnating PA6 oligomer melt into reinforcing glass fiber followed by subsequent solid‐state polymerization (SSP) to obtain LGF/PA6 composite pellets. A conventional injection‐molding machine suitable for short glass fiber reinforced composites was applied to the processing of the prepared composites, which reduced the fiber length in the final products. Mechanical properties, thermal property, and fiber length distribution of injection molding bars were investigated. Scanning electron microscopy (SEM) was used to observe the impact fracture surfaces and the surfaces of glass fiber after the SSP. It was found that the LGF/PA6 composites were of favorable mechanical properties, especially the impact strength, although the average length of glass fiber was rather short. By this novel process, the content of glass fiber in composite could be high up to 60 wt.‐% and the maximum level of heat distortion temperature (HDT) was close to the melting temperature of PA6. SEM images indicated the favorable interfacial properties between the glass fiber and matrix. The glass fiber surfaces were further observed by SEM after removing the matrix PA6 with a solvent, the results showed that PA6 macromolecules were grafted onto the surface. Furthermore, the grafting amount of PA6 was increased with SSP time.

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“…Untreated and PU or FLEX treated jute yarns were braided with PLA fibers to yield jute yarn and PLA MBY, which was later used to prepare composites. A tubular braiding machine was used for fabricating MBY as an intermediated material for producing unidirectional continuous natural fiber-reinforced plastic composites [8]. Jute yarns as the reinforcement fibers were aligned vertically and braided with PLA fibers to yield jute/PLA MBY by using a technique known as microbraiding.…”

Section: Methodsmentioning

confidence: 99%

Continuous Natural Fiber Reinforced Thermoplastic Composites by Fiber Surface Modification

Wongsriraksa

Togashi

Nakai

et al. 2013

Advances in Mechanical Engineering

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Continuous natural fiber reinforced thermoplastic materials are expected to replace inorganic fiber reinforced thermosetting materials. However, in the process of fabricating the composite, it is difficult to impregnate the thermoplastic resin into reinforcement fiber because of the high melt viscosity. Therefore, intermediate material, which allows high impregnation during molding, has been investigated for fabricating continuous fiber reinforced thermoplastic composite by aligning resin fiber alongside reinforcing fiber with braiding technique. This intermediate material has been called "microbraid yarn (MBY.)" Moreover, it is well known that the interfacial properties between natural fiber and resin are low; therefore, surface treatment on continuous natural fiber was performed by using polyurethane (PU) and flexible epoxy (FLEX) to improve the interfacial properties. The effect of surface treatment on the mechanical properties of continuous natural fiber reinforced thermoplastic composites was examined. From these results, it was suggested that surface treatment by PU with low content could produce composites with better mechanical properties.

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The mechanical properties of unidirectional thermoplastic composites manufactured by a micro-braiding technique

Cited by 60 publications

References 5 publications

Characterization of thermoplastic natural fibre composites made from woven hybrid yarn prepregs with different weave pattern

Characterization of thermoplastic natural fibre composites made from woven hybrid yarn prepregs with different weave pattern

Preparation and Mechanical Properties of Long Glass Fiber Reinforced PA6 Composites Prepared by a Novel Process

Continuous Natural Fiber Reinforced Thermoplastic Composites by Fiber Surface Modification

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