Creep behavior of glass‐fiber‐reinforced nylon 6 products

Tohmyoh, Hironori; Ito, Yusuke; Eguchi, Kazuteru; Daido, Wataru; Utsunomiya, Jiro; Nakano, Yoshiki

doi:10.1002/app.35393

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…The strain of PA66/GF30 composites prepared by TERE is less than that of TSE with the increase of test time, as shown in Figure 8. This can be attributed that the more larger fiber length and lower thermal degradation for PA66 in the composites prepared by TERE than that of TSE, which lead to the greater the constraint on the longitudinal extension and the higher degree of molecular chain entanglements 39 . Thus, the total energy required for molecular chain extension increases and makes creep difficult.…”

Section: Resultsmentioning

confidence: 99%

Effect of series explosion effects on the fiber length, fiber dispersion and structure properties in glass fiber reinforced polyamide 66

Guo

Wang

Zhang

et al. 2020

Polymers for Advanced Techs

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Nowadays, glass fiber (GF) reinforced polyamide 66 (PA66) composites have attracted strong interests in commercial and engineering applications due to many advantages, such as corrosion resistance, high potential of integration, self‐lubricating, and high toughness. However, it is very difficult for traditional plastic molding equipment to concurrently obtain the increase of fiber retention length and the improvement of fiber dispersion during the PA66/GF composites manufacturing, which greatly limit the widespread application of such composites. An innovative twin eccentric rotor volume pulsating plasticizing transportation equipment (TERE) based on series explosion effects, is applied to prepare PA66/GF composites at different rotor speeds and fiber loadings. Inside the PA66/GF30 composite prepared by TERE, the fibers are evenly dispersed in polymer matrix and the average fiber length increases by 3.2 times when compared to that of twin‐screw plasticizing transportation equipment (TSE). The Charpy impact strength of PA66/GF composites prepared by TERE is nearly twice that of TSE at all fiber contents. The fatigue properties, thermal oxygen aging properties, and creep properties of the TERE composites exhibit better effects than the TSE composites, indicating that the TERE can ensure longer fiber length and better dispersion effect simultaneously.

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Section: Resultsmentioning

confidence: 99%

Effect of series explosion effects on the fiber length, fiber dispersion and structure properties in glass fiber reinforced polyamide 66

Guo

Wang

Zhang

et al. 2020

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…Swelling, plasticization, slow hydrolysis of the polymeric matrix, and slow attack of the fluid to the fiber/matrix interface may yield the loss of properties, influencing mechanical behavior and, therefore, the durability of the structure. Given that, understanding the long-term response of a CFRP structure under thermomechanical load and harsh environment is especially important when it represents the actual loading scenario of the structure [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Creep and Residual Properties of Filament-Wound Composite Rings under Radial Compression in Harsh Environments

et al. 2020

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This work focuses on the viscoelastic response of carbon/epoxy filament-wound composite rings under radial compressive loading in harsh environments. The composites are exposed to three hygro-thermo-mechanical conditions: (i) pure mechanical loading, (ii) mechanical loading in a wet environment and (iii) mechanical loading under hygrothermal conditioning at 40 ∘C. Dedicated equipment was built to carry out the creep experiments. Quasi-static mechanical tests are performed before and after creep tests to evaluate the residual properties of the rings. The samples are tested in (i) radial compression, (ii) axial compression, and (iii) hoop tensile strength. Different laminates wound at off-axis orientations are manufactured via filament winding and analyzed. Key results show that creep displacement is affected by both hygrothermal and mechanical conditionings, especially at a higher temperature. Moreover, residual properties are quantified showing that creep generates permanent damage in the cylinders.

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“…In the end, the outcomes are the same: a loss of thermomechanical properties and increase in end‐group concentrations that results in a decrease in the degree of crystallinity and alterations to the exposed surface morphology (micro‐cracks, discolouration) . For a few decades, PA 6‐based composites, for example, glass fiber (GF) or clay‐filled composites have been the topic of many studies considering their high commercial interest, specifically for automotive applications . Zuo et al .…”

Section: Introductionmentioning

confidence: 99%

Comparison in composite performance after thermooxidative aging of injection molded polyamide 6 with glass fiber, talc, and a sustainable biocarbon filler

Jubinville

Abdelwahab

Mohanty

et al. 2019

J of Applied Polymer Sci

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Degradation is an unavoidable part of a material's life making it important to both monitor and control the aging behavior of plastics. This study compares thermooxidative degraded composites of a novel bio-based and sustainable filler, Biocarbon (MBc), against that of traditional and commercially available fillers (glass fiber and talc) used in the automotive industry. The influence of thermooxidative degradation on the composites was studied under accelerated heat aging for 1000 h at 140 C. The mechanical properties of the composites were evaluated using notched Izod impact as well as both tensile and flexural tests. Morphological structure of the composites was investigated using a scanning electron microscopy. Dynamic mechanical analysis and differential scanning calorimetry were used to evaluate the physical transitions both before and after aging. The glass-filled composites displayed the best performance; while, both the talc and biocarbon composites possessed similar strength and ductility performances. Advantageously, the biocarbon composites experienced an 11% reduction in density as compared to talc-filled composites with similar weight content. After aging, all composites exhibited reduced tensile and flexural strengths ranging from 5 to 67% partly due to chain scission. Whereas, the modulus of all composites increased with a range of 1-24% due to an annealing effect.

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Creep behavior of glass‐fiber‐reinforced nylon 6 products

Cited by 7 publications

References 20 publications

Effect of series explosion effects on the fiber length, fiber dispersion and structure properties in glass fiber reinforced polyamide 66

Effect of series explosion effects on the fiber length, fiber dispersion and structure properties in glass fiber reinforced polyamide 66

Creep and Residual Properties of Filament-Wound Composite Rings under Radial Compression in Harsh Environments

Comparison in composite performance after thermooxidative aging of injection molded polyamide 6 with glass fiber, talc, and a sustainable biocarbon filler

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