Approximation of the Rheological Properties of Composite Materials

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.777.32 ◽

2018 ◽

Vol 777 ◽

pp. 32-36

Author(s):

Irina Garkina ◽

Alexander Danilov

Keyword(s):

Composite Materials ◽

Rheological Properties ◽

Polymer Composite ◽

Exponential Function ◽

Optimal Concentration ◽

Polymer Composite Materials ◽

Epoxy Composites ◽

Epoxy Binder ◽

One Dimensional

The rheological properties of polymer composite materials for special purposes in molecular, structural and complex plasticization are investigated. The possibility of approximating the rheological properties of epoxy composites to protect against radiation by a multiplicative polynomial-exponential function is shown (approximation of the functions of two arguments in the form of a product of two one-dimensional functions). Analytical dependences of the viscosity of epoxy binder on temperature and percentage of additive are given. The results of optimization (optimal concentration of plasticizer) are indicated.

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Regulation of Mechanical Properties of Advanced PCM Products with the Aid of Catalysts

Materials Science Forum ◽

10.4028/www.scientific.net/msf.992.415 ◽

2020 ◽

Vol 992 ◽

pp. 415-420

Author(s):

I.V. Zaychenko ◽

V.V. Bazheryanu ◽

A.G. Kim

Keyword(s):

Mechanical Properties ◽

Composite Materials ◽

Temperature Gradient ◽

Polymer Composite ◽

Strength Properties ◽

Polymer Composite Materials ◽

Epoxy Binder ◽

Curing Process ◽

The Matrix

The article considers the problem of the effect of uneven curing caused by the temperature gradient across the thickness of the material on the anisotropy of the strength properties of polymer composite materials. The effect of catalysts on the curing of the epoxy binder EDT-69N, used for the manufacture of multilayer polymer composite materials, was studied. According to dielectric spectrometry, the accelerating effect of the selected compounds on the curing process of the EDT-69N epoxy binder during fiberglass molding has been proved. The possibility of controlling the curing process using catalysts to reduce the influence of the temperature gradient on the anisotropy of the strength properties of the matrix in the manufacture of polymer composite materials is shown.

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Rheological properties of dispersion-filled thermoplastics with different types of structures at various processing temperatures

Plasticheskie massy ◽

10.35164/0554-2901-2020-9-10-19-22 ◽

2020 ◽

pp. 19-22

Author(s):

D. D. Krechetov ◽

A. N. Kovaleva ◽

I. D. Simonov-Emelianov

Keyword(s):

Composite Materials ◽

Rheological Properties ◽

Polymer Composite ◽

Polymer Matrix ◽

Polymer Composite Materials ◽

Dispersed Phase ◽

Density Parameter ◽

Wide Range ◽

Different Types ◽

Generalized Parameters

The article presents the results of a study of the rheological characteristics of dispersion-fi lled polymer composite materials (DFPCM) based on LDPE and glass balls of the ШСО-30 brand in a wide range of processing temperatures. For the fi rst time, the rheological properties of dispersion-fi lled polymer composite materials are considered from the standpoint of the formation of the dispersed phase with diff erent types of lattices, functional division of the polymer matrix (φp = Θ + В + М) and the construction of dispersed systems with diff erent types of structures (DS, LFS, MFS, HFS) in terms of generalized parameters (Θ, amid/d). This approach allows us to predict and describe the rheological properties for all DFPCMs with diff erent types of dispersed structures, using a dispersed phase (fi ller) with known geometric dimensions (d), packing density (parameter kpacking and φm) based on this polymer matrix. The infl uence of temperature on the processing technology of DFPCM with diff erent types of structures into products by injection molding has been established.

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Rheological properties of dispersed-filled polymer composite materials based on polyethylene containing glass microbeads

Plasticheskie massy ◽

10.35164/0554-2901-2021-7-8-35-38 ◽

2021 ◽

pp. 35-38

Author(s):

Q. D. Pham ◽

P. V. Surukov

Keyword(s):

Composite Materials ◽

Mathematical Models ◽

Rheological Properties ◽

Polymer Composite ◽

High Density Polyethylene ◽

Filler Content ◽

High Density ◽

Polymer Composite Materials ◽

Flow Curves ◽

Capillary Viscosimetry

This article presents the results of a study of the effect of the filler content on the rheological properties of polymer composite materials based on high density polyethylene containing glass microbeads. The flow curves of the compositions were obtained by the method of capillary viscosimetry. Simple mathematical models have been constructed that allow estimating the viscosity of the compositions’ melts based on a given filler content.

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Research of Formal-Kinetic Regularities of the Curing Process of Low-Viscosity Epoxy Binder

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.b7662.129219 ◽

2019 ◽

Vol 9 (2) ◽

pp. 1168-1173

Keyword(s):

Composite Materials ◽

Polymer Composite ◽

Polymer Composite Materials ◽

Practical Significance ◽

Epoxy Binder ◽

Curing Process ◽

Model Free ◽

Low Viscosity ◽

Formal Kinetic ◽

Degree Of Curing

The expanding range of components intended for manufacturing products of polymer composite materials is often not accompanied by comprehensive information on the characteristics and recommended technological curing modes. The relevance and practical significance of this investigation are based on the need to predict rational technological modes for curing products of polymer composite materials based on the low-viscosity epoxy binder Etal-Inject-SLM, which is in demand in the manufacture of products from polymer composite materials by cold curing. The purpose of this investigation is to determine kinetic patterns, which allow for predicting the time and degree of curing of the low-viscosity epoxy binder Etal-Inject-SLM for various isothermal curing conditions. The method of differential scanning calorimetry was used to measure the thermal effect of the curing reaction of the Etal-Inject-SLM epoxy binder at various heating rates. Based on the experimental calorimetric data and using the model-free (non-prior) Friedman method, using the specialized software Netzsch Kinetics Neo, the parameters characterizing the formal kinetic laws of the curing process were calculated. This allowed for plotting isothermal and iso-conversion thermokinetic diagrams necessary for predicting the time and degree of curing of the Etal-Inject-SLM binder at different temperatures and curing times. This results can be useful for optimizing technological processes in which the low-viscosity epoxy binder Etal-Inject-SLM is used.

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