Rheological and mechanical properties of polyphenylene sulfide reinforced with round and rectangle cross-section glass fibers

2016 ◽  
Vol 29 (7) ◽  
pp. 849-856
Author(s):  
Tao Jiang ◽  
Chengzhen Geng ◽  
Hanmei Zhou ◽  
Ai Lu
Keyword(s):  
Mechanical Properties ◽  
Cross Section ◽  
Glass Fibers ◽  
Polyphenylene Sulfide ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Reinforcing Effect ◽  
Fiber Cross Section ◽  
Cross Section Shape ◽  
Section Shape

Two kinds of glass fibers with round (RdGF) and rectangle cross-sections (RcGF) were used to reinforce polyphenylene sulfide (PPS), respectively. In this way, the effect of fiber cross-section shape on rheological and mechanical properties of the composites was studied for the first time. Results showed that the viscosity of the composites reinforced with RcGF was much lower than that of RdGF composites, owing to their higher sensitivity to flow. As a result, PPS/RcGF composites could be injection-molded at high fiber contents. Moreover, RcGF showed a better reinforcing effect on mechanical properties of PPS. So the use of RcGF could better balance the contradiction between processability and reinforcing effect for glass fiber-reinforced composites. Various characterizations were carried out to reveal the reinforcing mechanism. This work demonstrated the importance of fiber cross-section shape on design and production of fiber-reinforced composites.

scholarly journals Physico-Mechanical Properties of the Poly(oxymethylene) Composites Reinforced with Glass Fibers under Dynamical Loading

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2064 ◽  
Author(s):  
Stanisław Kuciel ◽  
Patrycja Bazan ◽  
Aneta Liber-Kneć ◽  
Aneta Gądek-Moszczak
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Fiber Diameter ◽  
Glass Fibers ◽  
Fiber Reinforced Composites ◽  
Dynamic Loads ◽  
Fatigue Properties ◽  
Reinforced Composites ◽  
The Impact ◽  
Microscopy Images

The paper evaluated the possibility of potential reinforcing of poly(oxymethylene) (POM) by glass fiber and the influence of fiberglass addition on mechanical properties under dynamic load. Four types of composites with glass fiber and another four with carbon fiber were produced. The fiber content ranged from 5% to 40% by weight. In the experimental part, the basic mechanical and fatigue properties of POM-based composites were determined. The impact of water absorption was also investigated. The influence of fiber geometry on the mechanical behavior of fiber-reinforced composites of various diameters was determined. To refer to the effects of reinforcement and determine the features of the structure scanning electron microscopy images were taken. The results showed that the addition of up to 10 wt %. fiberglass increases the tensile properties and impact strength more than twice, the ability to absorb energy also increases in relation to neat poly(oxymethylene). Fiber geometry also has a significant impact on the mechanical properties. The study of the mechanical properties at dynamic loads over time suggests that composites filled with a smaller fiber diameter have better fatigue properties.

scholarly journals Effect of Formation Route on the Mechanical Properties of the Polyethersulfone Composites Reinforced with Glass Fibers

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1364 ◽  
Author(s):  
Galal Sherif ◽  
Dilyus Chukov ◽  
Victor Tcherdyntsev ◽  
Valerii Torokhov
Keyword(s):  
Mechanical Properties ◽  
Thermal Treatment ◽  
Mechanical Characteristics ◽  
Glass Fibers ◽  
Interfacial Interaction ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Shear Tests ◽  
Matrix Interaction ◽  
Properties Of Composites

Interfacial interaction is one of the most important factors that affect the mechanical properties of the fiber reinforced composites. The effect of fabrics′ sizing removal from glass fibers’ surface by thermal treatment on the mechanical characteristics of polyethersulfone based composites at different fiber to polymer weight ratios was investigated. Three fiber to polymer weight ratios of 50/50, 60/40, and 70/30 were studied. Flexural and shear tests were carried out to illustrate the mechanical properties of the composites; the structure was studied using Fourier-transform infrared spectroscopy and scanning electron microscopy. It was shown that solution impregnation of glass fabrics with polyethersulfone before compression molding allows to achieve good mechanical properties of composites. The thermal treatment of glass fabrics before impregnation results in an increase in flexural and shear strength for all the composites due to the improvement of fiber–matrix interaction.

Growth mechanism of carbon microcoils with changing fiber cross-section shape

Carbon ◽  
2010 ◽  
Vol 48 (5) ◽  
pp. 1695
Author(s):  
Jing-bao Cheng ◽  
Jin-hong Du ◽  
Shuo Bai
Keyword(s):  
Cross Section ◽  
Growth Mechanism ◽  
Fiber Cross Section ◽  
Cross Section Shape ◽  
Section Shape

On the Influence of Damage-Caused Global Stiffness Decrease upon Structural Modal Parameters

2015 ◽  
Vol 1111 ◽  
pp. 139-144
Author(s):  
Gilbert Rainer Gillich ◽  
Doina Frunzaverde ◽  
Nicoleta Gillich ◽  
Jean Louis Ntakpe ◽  
Florian Muntean
Keyword(s):  
Mechanical Properties ◽  
Cross Section ◽  
Damage Assessment ◽  
Modal Parameters ◽  
Element Analysis ◽  
Derived Relations ◽  
Stiffness Reduction ◽  
Cross Section Shape ◽  
Section Shape ◽  
Crack Type

Damage detection using vibration-based methods make use of empirically derived relations to characterize the crack severity. The applicability of these relations is limited to structures with similar cross-section shape and having the same crack type. The use of these relations for composite materials is even more difficult, due to the directional dependency of the materials mechanical properties. We propose in this paper a new method to evaluate the damage severity, which is based on the global stiffness reduction. It is known that the amount of energy stored in a structure depends on its global stiffness, i.e. the value of the structure deflection under a given load. Consequently, the stiffness decrease due to a damage is signalized by an increased deflection. We defined a damage severity indicator based on the evaluation of deflection changes, which is simple to be found by a simple finite element analysis. This indicator is valid for all structures having similar cross-section shape; we used it successfully in vibration-based damage assessment.

Fiber Cross-Section Shape Effect on Rate-Dependent Behavior of Polymer Matrix Composites with Fbgs Sensors

2013 ◽  
Vol 284-287 ◽  
pp. 132-137
Author(s):  
Zhi Zhai ◽  
Zheng Jia He ◽  
Xue Feng Chen ◽  
Jun Jie Ye ◽  
Xiao Jun Zhu
Keyword(s):  
Cross Section ◽  
Internal State ◽  
Micromechanical Model ◽  
Constitutive Relationship ◽  
Shape Effect ◽  
State Variables ◽  
Fiber Cross Section ◽  
Rate Dependent ◽  
Cross Section Shape ◽  
Section Shape

The micromechanical investigation of fiber cross-section shape effect on the rate sensitive nonlinear behavior of a glass/epoxy was performed at 10-5/s and 1/s, which considering four shapes, square, cross, circle and ellipse. With the strain of different rate loadings measured by Fibre Bragg gratings (FBGs) sensors, the rate-dependent inelastic constitutive relationship of epoxy is built by using an internal state variables viscoplasticity model. Then, through homogenizing the properties of unit cells, the responses of resin and its composites at 30° and 60° off-axis loadings are predicted by a micromechanical model compared with the experiments data. The effect of fiber cross-section fiber on the 30° and 90° off-axis responses are discussed with respect to the viscoplastic parameters of the resin determined. The results indicate that the micromechanical model accurately calculates the behavior of the PMCs employed. The square fiber causes the largest flow stress and plastic strain in the four cases. And the influences on overall responses for the four fiber shapes are enhanced with raising off-axis angles but weaken with the rate increase. However, the elliptical fiber yields the highest modulus in linear elastic stage. The square fiber is the most effective and the elliptical fiber is the least effective in the nonlinear deformation stage. Besides, the elastic properties are unaffected by loading rates when it is less than 1/s.

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