scholarly journals Glass/Polypropylene Commingled Yarns for Damage Tolerant Thermoplastic Composites

2017 ◽  
Vol 1 (3) ◽  
pp. 93-103 ◽  
Author(s):  
Erdem Selver ◽  
Prasad Potluri
Keyword(s):  
Thermoplastic Composites ◽  
Commingled Yarns ◽  
Damage Tolerant

scholarly journals Mechanical Properties of Thermoplastic Composites Made of Commingled Carbon Fiber / Nylon Fiber

2021 ◽  
Author(s):  
Mizuki Ono ◽  
Masachika Yamane ◽  
Shuichi Tanoue ◽  
Yoshihiro Yamashita ◽  
Hideyuki Uematsu
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Fracture Strain ◽  
Flexural Modulus ◽  
Thermoplastic Composites ◽  
Molding Pressure ◽  
Tensile Fracture ◽  
Cross Sectional ◽  
Resin Impregnation ◽  
Commingled Yarns

Fiber-opening treatment of commingled yarns consisting of thermoplastic nylon fibers and carbon fibers could produce superior CFRTP, but few studies toward that end have been conducted. In this study, we investigated whether an open weave fabric consisting of commingled yarns made of carbon and nylon fibers could shorten the impregnation distance of resin to carbon fibers, and there are few reports on the design of fabrics by opening carbon fiber bundles consisting of commingled yarns. From this study, following are cleared. The impregnation speed of the nylon resin on the carbon fiber was very fast, less than 1 minute. As the molding time increased, the tensile strength and tensile fracture strain slightly decreased and the nylon resin deteriorated. The effects of molding time on flexural strength, flexural modulus, and flexural fracture strain were negligible. From the cross-sectional observation conducted to confirm the impregnation state of the matrix resin, no voids were observed in the molded products regardless of molding time or molding pressure, indicating that resin impregnation into the carbon fiber bundle of the open-fiber mixed yarn fabric was completed at a molding pressure of 5 MPa and a molding time of 5 min.

An Impregnation Model for the Consolidation of Thermoplastic Composites Made from Commingled Yarns

1999 ◽  
Vol 33 (8) ◽  
pp. 751-772 ◽  
Author(s):  
N. Bernet ◽  
V. Michaud ◽  
P. E. Bourban ◽  
J. A.E. Manson
Keyword(s):  
Thermoplastic Composites ◽  
Commingled Yarns

Investigation of the effect of CNTs on the mechanical properties of LPET/glass fiber thermoplastic composites

2019 ◽  
Vol 33 (12) ◽  
pp. 1652-1673 ◽  
Author(s):  
O Demircan ◽  
A Al-darkazali ◽  
İ İnanç ◽  
V Eskizeybek
Keyword(s):  
Carbon Nanotubes ◽  
Glass Fiber ◽  
Interfacial Adhesion ◽  
Flexural Modulus ◽  
Thermoplastic Composites ◽  
Flexural Properties ◽  
Hot Press ◽  
Fiber Glass ◽  
Multiwalled Carbon ◽  
Commingled Yarns

Within this research, four kinds of multiwalled carbon nanotubes (MWCNTs; 0.0, 0.7, 0.9, and 1.1 wt%) integrated thermoplastic composites with commingled yarns (low melting point polyethylene terephthalate fiber/glass fiber) were fabricated using hot-press machine. The fabricated composites were tested against tensile and three-point flexural loadings. Specimens with 0.9-wt% MWCNTs in 90° direction showed the highest values of tensile and flexural properties with an improvement of about 7% and 33% in tensile and flexural modulus and about 3% and 65% in tensile and flexural strength compared to specimens without MWCNTs in 90° direction. This improvement can most likely be attributed to an increase in interfacial adhesion due to the presence of the carbon nanotubes.

Transverse Impact and Tensile Behavior of the Three-Dimensional Woven Fabric Reinforced Thermoplastic Composites

2010 ◽  
Vol 129-131 ◽  
pp. 1238-1243 ◽  
Author(s):  
Wei Gou Dong ◽  
Hai Ling Song
Keyword(s):  
Composite Materials ◽  
Damage Tolerance ◽  
Three Dimensional ◽  
Thermoplastic Composite ◽  
Woven Fabric ◽  
Thermoplastic Composites ◽  
Two Dimensional ◽  
Energy Impact ◽  
Commingled Yarns ◽  
The Impact

Two forms of perform were prepared by a Glass fiber/Polypropylene fiber commingled yarn. One was a three-dimensional woven fabric with an angle-interlock structure, and another was a two-dimensional plain woven fabric laminate. The three-dimensional woven fabric reinforced thermoplastic composites(3-DWRC) and two-dimensional woven fabric reinforced thermoplastic composites(2-DWRC) were fabricated by hot-press process. The Impact and tensile performances of both 3-DWRC and 2-DWRC were examined. Compared to the 2-DWRC, the 3-DWRC have better impact properties, the energy required to initiate cracks, the threshold force of the first oscillation and maximum load increased by 41.90%, 54.41%, 38.75% respectively under the low-energy impact conditions. The tensile tests shown that the 3-DWRC presented batter fracture toughness than the 2-DWRC. The use of thermoplastic composites is growing rapidly because of their excellent properties, a high toughness and damage tolerance, short processing cycles, and the ability to be reprocessed. But thermoplastic materials usually have a difficulty to impregnate between reinforcing fibers, due to high melt polymer viscosity. It is a technology innovation that the commingled yarns composed of reinforced fibers and thermoplastic fibers are used as prepreg for thermoplastic composite materials. Because thermoplastic fiber and reinforced fiber are closely combined, which reduces distances of resin’s infiltration, this can effectively overcome the difficulties of resin’s impregnation. The commingled yarns can be woven and knitted, and can facilitate the processing of complex structural composites. Three-dimensional fabrics reinforced composites are ideal materials with excellent integrity because it is linked with yarns between layers. Its shearing strength between layers, damage tolerance and reliability are better than the two-dimensional fabric laminated composites. At present, the researches of thermoplastic materials with two-dimensional fabric reinforced structure made from commingled yarns are much more, such as manufacturing technology, material properties ,effects of process conditions on properties, relationship between structures and properties, and so on [1-8]. However, only a few studies appear in literature on the structure-property relationships of three-dimensional fabric reinforced thermoplastic composite materials made of commingled yarns [9-10]. Byun, Hyung Joon et al. [9] undertook the impact test and the tensile test on 3-D woven thermoplastic composite materials and 2-D plain woven laminate which is made by CF/PEEK mixed yarn. Dong Weiguo and Huang Gu[10] studied the porosity, tensile and bending properties on 3-D woven thermoplastic composites which make from core-spun yarn containing glass fibers and polypropylene fibers. The aim of this study was to investigate the impact behavior of and tensile properties of 3-D woven fabric thermoplastic composites made by a GF/PP commingled yarns. Attempts was made to identify the damage mode of the 3-D woven fabric thermoplastic composites under the low energy impact and tensile conditions.

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