Investigation of carbon fiber–reinforced thermoplastic polymers using thermogravimetric analysis

Giżyński, Maciej; Romelczyk-Baishya, Barbara

doi:10.1177/0892705719839450

Cited by 26 publications

(16 citation statements)

References 24 publications

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“…TGA (thermogravimetric analysis) can also be used to measure the carbon fiber content of thermoset and thermoplastic carbon fiber composites, but this method can only be done for small samples less than 0.1 g and may not be representative for the entire sample. 15,16 A carbonization in nitrogen process has been previously developed to determine the carbon fiber content in thermoset and thermoplastic composites that are reinforced by only carbon fibers. 17,18 The carbonization in nitrogen process allows the measurement of carbon fiber content in large sample sizes without potentially hazardous acid digestion.…”

Section: Introductionmentioning

confidence: 99%

Fiber content measurement of hybrid carbon and glass fiber reinforced thermoset composites

Johnson

Pillay

Ning

2022

Journal of Composite Materials

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Hybrid carbon fiber and glass fiber reinforced thermoset composites are commonly used in structural applications throughout the energy, aerospace, automotive, and marine industries. The differing fiber types can be combined into a hybrid composite with the intent to efficiently utilize the beneficial properties of each type of reinforcement. The fiber fraction of each individual fiber type influences the mechanical properties of the overall composite. Measurement of the fiber fraction of each individual fiber type allows understanding and prediction of the mechanical properties as well as a method of quality control in manufacturing. A combination of a carbonization in nitrogen method for the measurement of fiber content in carbon fiber reinforced composites and an oxidation method to measure the glass fiber content are used for the first time. It has been demonstrated that the approach is effective at measuring the carbon fiber and glass fiber contents in hybrid glass and carbon fiber thermoset composites in both epoxy and vinyl ester resin systems.

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Section: Introductionmentioning

confidence: 99%

Fiber content measurement of hybrid carbon and glass fiber reinforced thermoset composites

Johnson

Pillay

Ning

2022

Journal of Composite Materials

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“…Continuous fiber reinforced thermoplastics (CFRTs) are sustainable composite materials [ 1 , 2 , 3 , 4 ], which have great potential in automobiles [ 5 ], face guards [ 6 ] and other industrial fields where lightweight [ 7 ], environmentally-friendly [ 8 ] and good mechanical properties are needed. In recent years, the preparation of CFRTs has also attracted the close attention of scholars [ 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

A General and Efficient Approach for the Dual-Scale Infiltration Flow Balancing in In Situ Injection Molding of Continuous Fiber Reinforced Thermoplastic Composites

Liang

2021

Polymers

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In situ injection molding of continuous fiber reinforced thermoplastic composites is challenged by unbalanced dual-scale infiltration flow due to the pronounced capillary effect. In this paper, a general and efficient approach was proposed for dual-scale infiltration flow balancing based on numerical simulation. Specifically, Stokes and Brinkman equations were used to describe the infiltration flow in inter- and intra-fiber bundles. In particular, capillary pressure drop was integrated in the Brinkmann equation to consider the capillary effect. The infiltration flow front is tracked by the level set method. Numerical simulation and experimental results indicate that the numerical model can accurately demonstrate the unbalanced infiltration flow in inter- and intra-fiber bundles caused by the changes of the injection rate, the resin viscosity, the injection rate, the fiber volume fraction and the capillary number. In addition, the infiltration flow velocity in inter- and intra-fiber bundles can be efficiently tuned by the capillary number, which is mainly determined by the injection rate for a specified resin system. The optimal capillary numbers obtained by simulation and experiment are 0.022 and 0.026, which are very close to each other. Finally, one-dimensional in situ injection molding experiments with constant injection pressure were conducted to prepare fiber reinforced polymerized cyclic butylene terephthalate composite laminate with various flow rates along the infiltration direction. The experimental results confirmed that the lowest porosity and the highest interlaminar shear strength of the composite can only be obtained with the optimized capillary number, which is basically consistent with the simulation results.

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“…18 Airbus has successfully employed polymer composites on the leading edges of A300-series aircraft and Gulfstream 650 has an elevator and vertical tail rudder produced with carbon fiber/polyphenylene sulfide composite. 19 The important strategy for having sufficient thermal conductivity is to construct an effective thermal conductive path in polymeric composites by using hybrid fillers with different size and shapes. 20–23…”

Section: Introductionmentioning

confidence: 99%

Improving thermal conductivity of polybutylene terephthalate composites with hybrid synthetic graphite and carbon fiber

Yenier

Aker²,

Seki

et al. 2021

Journal of Thermoplastic Composite Materials

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Polybutylene terephthalate (PBT) is a semi-crystalline engineering thermoplastic polyester. PBT offers rapid molding cycles, high heat resistant, crystallinity, fatigue resistance, strength and rigidity, excellent electrical properties, creep resistance, reproducible mold shrinkage and chemical resistance. In this study, PBT was loaded with synthetic graphite and carbon fiber at different weight fractions (10–40 wt.%). PBT-based composites were fabricated by the melt mixing process by using a co-rotating twin screw extruder then thermal, mechanical and morphological properties of filled PBT composites was investigated. Weight fraction of carbon fiber (up to 30 wt.%) increases the tensile strength and flexural strength of PBT, but synthetic graphite loading decreases the tensile strength and flexural strength of PBT. The highest in-plane and through-plane thermal conductivity values were obtained as 9.24 for 40 wt.% synthetic graphite filled composite and 3.41 W/mK for 40 wt.% carbon fiber reinforced composite, respectively. Carbon fiber was found to be more effective in increasing the through-plane thermal conductivities than synthetic graphite.

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Investigation of carbon fiber–reinforced thermoplastic polymers using thermogravimetric analysis

Cited by 26 publications

References 24 publications

Fiber content measurement of hybrid carbon and glass fiber reinforced thermoset composites

Fiber content measurement of hybrid carbon and glass fiber reinforced thermoset composites

A General and Efficient Approach for the Dual-Scale Infiltration Flow Balancing in In Situ Injection Molding of Continuous Fiber Reinforced Thermoplastic Composites

Improving thermal conductivity of polybutylene terephthalate composites with hybrid synthetic graphite and carbon fiber

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