Experimental values for the elastic constants of a particulate-filled glassy polymer

Smith, Jack C.

doi:10.6028/jres.080a.008

Cited by 102 publications

(78 citation statements)

References 16 publications

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“…Circuit board Silica-based E-glass, which has a CTE of ~5 x 10" ^/°C, has been widely utiHzed as a particulate filler in epoxy-based resins to reduce the overall CTE of the potting compound, making it more suitable for electronics applications [2,6]. These types of encapsulating compounds are inexpensive and commonly used in a wide range of commercial electronics products, from personal computers to cell phones [3].…”

Section: Device Potting Compoundmentioning

confidence: 99%

“…Such hollow glass fillers are readily available at low cost and are termed microspheres, hollow glass beads, hollow glass spheres, or microballoons. These microspheres, through variations in glass wall thickness and particle diameter, have low densities in the range of 0.1-1.0 g/cm^ [6]. Hollow glass microspheres have been widely employed as particulate filler in polymeric systems for over three decades [8].…”

Section: Device Potting Compoundmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of Low Density Glass Filled Epoxies

Quesenberry¹,

Madison²,

Jensen³

2003

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Section: Device Potting Compoundmentioning

confidence: 99%

Section: Device Potting Compoundmentioning

confidence: 99%

Characterization of Low Density Glass Filled Epoxies

Quesenberry¹,

Madison²,

Jensen³

2003

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“…En cuanto a la influencia del material de las partículas, la comparación de las Figs. 7 y 8 permite observar, que aunque las partículas de SiC presentan valores más altos de módulo de elasticidad y límite elástico que las de alúmina (Tabla I), su incorporación a la matriz no se traduce de igual modo en una mejora de las propiedades del compuesto, ya que también es preciso considerar la adherencia partícula-matriz en este tipo de materiales (14).…”

Section: Comportamiento Estático a Compresiónunclassified

Fabricación y caracterización mecánica de un material compuesto de matriz polimérica y carga cerámica

Árias¹,

Zaera²,

López-Puente³

2004

Bol. Soc. Esp. Ceram. Vidr.

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En este trabajo se presenta el proceso de fabricación de un material compuesto de matriz polimérica y carga cerámica, su caracterización mecánica estática y su comportamiento frente a impacto. Como matriz se ha empleado una resina viniléster y como carga cerámica se han empleado partículas de alúmina y carburo de silicio. Estas partículas, con un tamaño medio comprendido entre 1.5 mm y 4.5 mm, presentan bajo coste y alta disponibilidad. La compactación uniaxial permitió obtener losetas con un elevado porcentaje de partículas cerámicas (hasta el 80% en peso) y baja porosidad. Se han realizado ensayos de compresión estática sobre el material desarrollado para analizar la influencia de varios factores: fracción volumétrica de partículas, tamaño de partícula, material de las partículas y temperatura. La resistencia a compresión cuasiestática del nuevo material compuesto se incrementa al aumentar la fracción volumétrica de partículas, siendo prácticamente independiente del tamaño de éstas, en el rango granulométrico considerado. El incremento de la temperatura supone una disminución en las propiedades cuasiestáticas. El bajo coste del material desarrollado justifica su aplicación en protecciones que requieran de una eficiencia frente a impacto intermedia entre la correspondiente a placas metálicas y a los paneles cerámica/metal. Palabras clave: Partículas cerámicas, Matriz polimérica, Eficiencia balística, Compresión estática, Ensayo de profundidad de penetración. Manufacturing and compressive behavior of a polymeric material loaded with ceramic particlesA polymeric material loaded with ceramic particles was developed and its static and impact behaviors were determined. A vinylester resin, used as matrix, was reinforced with alumina or silicon carbide particles. These particles, with mean sizes between 1.5 and 4.5 mm, are cheap and readily obtainable. The manufacturing process produced tiles with a high percentage of ceramic particles (up to 80% by weight) and low porosity. The static compressive behavior of the composite was examined to consider various factors: ceramic fraction, particle size, material of particles and temperature. A higher volumetric fraction of particles produces an increase of stiffness and raises the yield stress of the composite; the influence of size of particles is not determinant. High temperatures produces a decrease of the mechanical properties. The efficiency of this low-cost material is halfway between that of the conventional metallic materials and the monolithic ceramic tiles used in lightweight protection. Keywords: Ceramic particles, Polymeric matrix, Ballistic efficiency, Static compression, Depth of penetration test. INTRODUCCIÓNEn el proceso de diseño de protecciones frente a impacto, los requerimientos más importantes son elevada capacidad de detención de la amenaza, baja densidad y reducido coste de los materiales. Se pueden emplear diferentes materiales para satisfacer estos requerimientos. Los materiales metálicos pueden, en general, responder a los requerimientos de protecci...

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“…EXPERIMENTAL DATA Figure 5 shows a comparison between plenty of experimental results from literature [27][28][29][30][31][32][33][34][35][36][37][38] and the analytical predictions of our model for the Young's modulus (a)-(g), the shear modulus (h), and Poisson s ratio (i). Upper and lower bounds from several classical model are additionally provided in Fig.…”

Section: Verification By the Previousmentioning

confidence: 99%

Analytic approximations for the elastic moduli of two-phase materials

et al. 2017

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Based on the models of series and parallel connections of the two phases in a composite, analytic approximations are derived for the elastic constants (Young's modulus, shear modulus, and Poisson's ratio) of elastically isotropic two-phase composites containing second phases of various volume fractions, shapes, and regular distributions.Comparison with a plentitude of finite element simulations and numerous previous experimental investigations shows a large consistency between the results and the analytic expressions derived, confirming the adequacy of the present approach. Compared with previous classical models, the present model has several advantages, including its simplicity, accuracy of prediction, and universal applicability.

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Experimental values for the elastic constants of a particulate-filled glassy polymer

Cited by 102 publications

References 16 publications

Characterization of Low Density Glass Filled Epoxies

Characterization of Low Density Glass Filled Epoxies

Fabricación y caracterización mecánica de un material compuesto de matriz polimérica y carga cerámica

Analytic approximations for the elastic moduli of two-phase materials

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