Optimization of Fiber Factors on Flexural Properties for Carbon Fiber Reinforced Polypropylene

Nugroho, Gunawan; Budiyantoro, Cahyo

doi:10.3390/jcs6060160

Cited by 8 publications

(6 citation statements)

References 21 publications

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“…In any case, both the tensile strength and the flexural strength of a thermoplastic material can increase by the effect of reinforcement fibers, due to the transfer of stress from the matrix to the fiber. Figure 1 also provides a simplified depiction of this phenomenon, described in detail elsewhere [ 11 ], and it displays the factors that determine the success or the extent of the improvement.…”

Section: Introductionmentioning

confidence: 99%

Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

et al. 2023

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The growing demand for plant fiber-reinforced composites offers new opportunities to compete against glass fiber (GF)-reinforced composites, but their performance must be assessed, revised, and improved as much as possible. This work reports on the production and the flexural strength of composites from polypropylene (PP) and hemp strands (20–50 wt.%), using maleic anhydride-grafted PP (MAPP) as a compatibilizer. A computational assessment of the reaction between cellulose and MAPP suggested the formation of only one ester bond per maleic anhydride unit as the most stable product. We determined the most favorable MAPP dosage to be 0.06 g per gram of fiber. The maximum enhancement in flexural strength that was attained with this proportion of MAPP was 148%, corresponding to the maximum fiber load. The modified rule of mixtures and the assumption of similar coupling factors for tensile and flexural strength allowed us to estimate the intrinsic flexural strength of hemp strands as 953 ± 116 MPa. While falling short of the values for sized GF (2415 MPa), the reinforcement efficiency parameter of the natural fibers (0.209) was found to be higher than that of GF (0.045).

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Section: Introductionmentioning

confidence: 99%

Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

et al. 2023

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“…The PA6 resin is in the softening state, without melting. 23 At this time, PA6 has a certain fluidity, so in the high-pressure state, carbon fiber and PA6 resin will eliminate the internal gap of the material, and the resin cannot be extruded overly. As shown in Table 6, the void ratios of the two molding processes were compared.…”

Section: Effect Of Different Molding Processes On Mechanical Propertiesmentioning

confidence: 99%

Preparation and properties of hybrid specific length carbon fiber thermoplastic composites by suspension method

Li,

Wang,

et al. 2024

Polymer Composites

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Carbon fiber reinforced thermoplastic composites have such advantages as low density, high strength, high temperature resistance, impact resistance, and good ductility, but due to the density difference between carbon fibers and resin fibers, it is difficult to mix them uniformly. Hence, it is difficult to prepare the composites with the uniform properties. In order to solve this problem, a preparation process based on solid phase mixing of carbon and resin fibers by suspension method is proposed in this paper. The carbon fiber reinforced thermoplastic composites (CFRTPs) can be prepared by dispersing carbon fibers of a certain length (~50 mm) and resin fibers in suspension through ultrasound‐assisted and churn‐combing methods. The effects of carbon fiber length, content and molding process on the mechanical properties of the CFRTPs were studied. The results show that the carbon fiber content and length are the main factors affecting the mechanical properties as well as void ratio of CFRTP. The performance of composites is significantly improved with the increase of carbon fiber length. While the length of carbon fiber is 50 mm and the content is 30 wt%, the prepared CFRTP has the best performance, with the tensile strength of 182.1 MPa, the bending strength of 354.3 MPa, the impact strength of 67.2 KJ·m−2, and the material void ratio of 0.65%. The study shows that the suspension method is feasible for the preparation of the CFRTPs. It is beneficial to improve production efficiency and decrease cost of production for the CFRTPs.Highlights Carbon fiber reinforced thermoplastic composites can be prepared by dispersing carbon fibers of a certain length (~50 mm) and resin fibers in suspension through ultrasound‐assisted and churn‐combing methods. Through the cooling‐high pressure molding process, the porosity of CFRTP is reduced and the mechanical properties of CFRTP are improved. The tensile strength, bending strength, and notch‐free impact strength properties of CFRTP are best when the carbon fiber content is 30% and the CF length is 50 mm. The method is characterized by simple process, low cost and high mechanical properties.

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“…Selain itu dipengaruhi juga oleh kekuatan ikatan pada komposit. Menurut Warier [16] dalam Gesang [8] kekuatan ikatan sangatlah menentukan kuat atau tidaknya suatu material. Dalam hal ini kekuatan yang tinggi akan dengan mudah menyalurkan tegangan secara efektif dari matriks kepada serat, Sedangkan apabila kurangnya ikatan (mechanical bonding) antara ikatan serat matriks dapat menurunkan nilai interface yang sangat rendah sehingga kekuatan ikatan tersebut rendah maka dapat menimbulkan siginifikasi terhadap kegagalan struktur komposit tersebut Kadir dkk [10].…”

Section: Hasil Analisaunclassified

Bending Strength of Apus Bamboo Fiber Reinforced Asphalt Composite Materials as Small Ship

Susanto

Maheswara²,

Widodo³

2022

B. SAINSTEK

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Bamboo is generally widely used as a material or construction material in homes. However, the use of bamboo as a raw material for shipbuilding is not yet available. To make bamboo as a material in shipbuilding, the bamboo is assembled or made into a composite to meet class standards as a material for shipbuilding. In this study, the composites used were apus bamboo fiber and asphalt. The method of making the composite uses the hand lay-up method with variations of 1 layer of reinforcement, 3 layers of reinforcement, and 5 layers of reinforcement. The dimensions of the test specimen size refer to ASTM D 790-3 which is then carried out by bending tests to determine the strength of the material due to loading and the elasticity of the material. Furthermore, the results of the bending test will be analyzed using the Anova method and compared with the standard material class in ship construction. Results Asphalt composite material with apus bamboo fiber has the highest bending test value of 27,068 Mpa and the lowest bending test value of 25,998 Mpa. Based on these results, it is stated that the Bamboo reinforced asphalt (BRA) material has not been able to match and even exceed the Bamboo reinforced plastic (BRP) material in the woven, non-woven and random fiber variants. It is influenced by the diameter, and the strength of the shape between the fiber and the matrix.

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Optimization of Fiber Factors on Flexural Properties for Carbon Fiber Reinforced Polypropylene

Cited by 8 publications

References 21 publications

Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

Behavior of the Flexural Strength of Hemp/Polypropylene Composites: Evaluation of the Intrinsic Flexural Strength of Untreated Hemp Strands

Preparation and properties of hybrid specific length carbon fiber thermoplastic composites by suspension method

Bending Strength of Apus Bamboo Fiber Reinforced Asphalt Composite Materials as Small Ship

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