Mechanical properties and morphological structures of short glass fiber reinforced PP/EPDM composite

Wang, Weizhi; Tang, Longxiang; Qu, Baojun

doi:10.1016/s0014-3057(03)00157-5

Cited by 40 publications

(18 citation statements)

References 18 publications

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“…Mechanical properties for strength and modulus with 3.0 mm quartz fiber lengths for a photocure composite independently evaluated and mechanically validated by the United States Department of Energy [10,11] could further be compared with other discontinuous fiber-reinforced polymer matrix composites recently described in literature [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] (Table 1). The vinyl ester or unsaturated polyester silica-based fiber-reinforced composites, which included the quartz fiber photocure molding compound presented in this investigation, demonstrated mechanical properties by meta analysis that were generally much higher by comparison than most other types of discontinuous fiber-reinforced composites for both strength and modulus.…”

Section: Photocure Applications and Other Discontinuous Fiber Polymermentioning

confidence: 99%

Stress‐transfer micromechanics for fiber length with a photocure vinyl ester composite

2006

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The objective was to test how increasing fiber length above the critical length would influence mechanical properties and fracture crack propagation. Micromechanics considering fiber/matrix stress-transfer was used to evaluate the results in addition to a shear debonding volume percent correction term necessary for the final analysis. Fiber lengths of 0.5, 1.0, 2.0, 3.0, and 6.0 mm with 9 μm diameters were added into a photocure vinyl ester particulate-filled composite at a uniform 28.2 vol%. Mechanical flexural testing was performed using four-point fully articulated fixtures for samples measuring 2 × 2 × 50 mm 3 across a 40 mm span. Fiber length correlated with improved mechanical properties for flexural strength, modulus, yield strength, strain, work of fracture, and strain energy release, p < 0.001. In addition, sample fracture depth significantly decreased with increasing fiber lengths, p < 0.00001. All mechanical properties correlated significantly as predictors for fracture failure, p < 0.000001, and as estimators for each other, p < 0.0001. The stress-transfer micromechanics for fiber length were improved upon for strength by including a simple correction factor to account for loss of fiber volume percent related to cracks deflecting around debonded fiber ends. In turn, the elastic property of modulus was shown to exhibit a tendency to follow stress-transfer micromechanics.

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Section: Photocure Applications and Other Discontinuous Fiber Polymermentioning

confidence: 99%

Stress‐transfer micromechanics for fiber length with a photocure vinyl ester composite

2006

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“…The radiation cross linking and the radiation sterilization of polymers showed comparable development and fulfilling the expectations [10]. Water uptake and swelling represent an important aspect of the characterization of polymers intended for use as degradable medical implants or drug delivery devices [11]. Conventionally, studies of water uptake, swelling, and degradation are being conducted on the macroscopic scale, e.g., by weighing specimens stored in various aqueous media for predetermined periods of time, by measurements of volume, or by determining the total amount of imbibed water by thermal gravimetric analysis (TGA) [12].…”

Section: Introductionmentioning

confidence: 67%

Preparation and Preliminary Study on Irradiated and Thermally Treated Polypropylene (PP) - Styrene Butadiene Rubber (SBR) Composite

et al. 2011

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The tensile strength (TS) and elastic modulus (ES) of non-irradiated (thermally treated) and irradiated Polypropylene (PP) -styrene butadiene rubber (SBR) composites were studied. The content of SBR (mass %) on PP and radiation dose play an important role on tensile strength and modulus of elasticity of PP-SBR composites. Tensile strength (TS) decreased markedly on increasing the SBR content on PP and even on exposing to radiation. The elastic modulus (EM) of PP-SBR composite has a tendency to increase with radiation dose and aging time but decreases with SBR loading. The water uptakes increase with SBR loading which accelerate with aging.

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“…Combining with the fact that the T p value of the PA10T/SGF is higher than PA10T/LGF, which reveals that thermal stability of the former is slightly better than the later. It has been reported that a phenomenon occurred in the SGF reinforced PP/EPDM composites , and it is found that SGF acts as physical barriers to limit the diffusion of volatile decomposed products out of the composites due to the random distribution of fibers. However, it is well known that the longer exposed time at a high temperature in the impregnation‐mold give rise to more chance to decompose for PA10T.…”

Section: Resultsmentioning

confidence: 99%

Thermal stability and thermal degradation kinetics of short and long glass fiber reinforced PA10T composites

Guo

Wang

et al. 2018

Polymer Engineering & Sci

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In this work, the long glass fiber reinforced poly(decamethylene terephthalanide) (PA10T/LGF) composites and short glass fiber reinforced PA10T (PA10T/SGF) composites were prepared by two different extrusion processing methods, respectively. The results of mechanical properties reveal the introduction of glass fiber can improve the performance of the material, and the LGF reinforced PA10T composites can achieve much higher performance than the SGF reinforced ones at the same level of fiber contents. The thermal stabilities of neat PA10T, PA10T/SGF, and PA10T/LGF are investigated by nonisothermal TG analysis. The thermal degradation kinetics is introduced by using Kissinger and Flynn‐Wall‐Ozawa methods and the thermal degradation mechanism functions of the samples are calculated by the Coats‐Redfem model. The results show that the thermal stabilities of PA10T/SGF and neat PA10T are better than that of PA10T/LGF. In addition, the incorporation of glass fiber into PA10T do not have much effect on the reaction mechanism type of thermal degradation compared with that neat PA10T. Furthermore, the thermal stability analysis of the composites is verified by the computed results of Gibbs free energy (ΔG#). POLYM. ENG. SCI., 59:246–253, 2019. © 2018 Society of Plastics Engineers

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Mechanical properties and morphological structures of short glass fiber reinforced PP/EPDM composite

Cited by 40 publications

References 18 publications

Stress‐transfer micromechanics for fiber length with a photocure vinyl ester composite

Stress‐transfer micromechanics for fiber length with a photocure vinyl ester composite

Preparation and Preliminary Study on Irradiated and Thermally Treated Polypropylene (PP) - Styrene Butadiene Rubber (SBR) Composite

Thermal stability and thermal degradation kinetics of short and long glass fiber reinforced PA10T composites

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