The Structure and Thermal Conductivity of Multicomponent Polymer Composites Filled with Hollow Ceramic and Silicone Microspheres

2017 ◽  
Vol 44 (7) ◽  
pp. 33-38
Author(s):  
D.P. Volkov ◽  
Yu.P. Zarichnyak ◽  
A.A. Marova
Keyword(s):  
Experimental Data ◽  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Polymer Composites ◽  
Conductivity Measurements ◽  
Multicomponent Polymer ◽  
Independent Experimental Data

The structure of polymer composites has been investigated, and a procedure has been developed for calculating their effective thermal conductivity. Thermal conductivity measurements have been carried out, and the results of calculations have been compared with the authors' own experimental data and with independent experimental data, and also with manufacturers' data which are shown to be hundreds of percent too low.

Modelling and analysis of effective thermal conductivity for polymer composites with sheet-like nanoparticles

2018 ◽  
Vol 54 (1) ◽  
pp. 356-369 ◽  
Author(s):  
Siping Zhai ◽  
Ping Zhang ◽  
Yaoqi Xian ◽  
Peng Yuan ◽  
Daoguo Yang
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Polymer Composites

Effective Thermal Conductivity Measurements of the Binary Pebble Beds by Hot Wire Method for the Breeding Blanket

1998 ◽  
Vol 34 (3P2) ◽  
pp. 877-881 ◽  
Author(s):  
Mikio Enoeda ◽  
Kazuyuki Furuya ◽  
Hideyuki Takatsu ◽  
Shigeto Kikuchi ◽  
Toshihisa Hatano
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Conductivity Measurements ◽  
Hot Wire ◽  
Wire Method

A Simplified Model for Effective Thermal Conductivity of Highly Porous Ceramic Fiber Insulation

2015 ◽  
Vol 7 (4) ◽  
Author(s):  
Nicholas P. G. Lumley ◽  
Emory Ford ◽  
Eric Minford ◽  
Jason M. Porter
Keyword(s):  
Experimental Data ◽  
Thermal Conductivity ◽  
Natural Convection ◽  
Effective Thermal Conductivity ◽  
Research Effort ◽  
Porous Ceramic ◽  
Ceramic Fiber ◽  
Chemical Process Industry ◽  
Thermophysical Model ◽  
Highly Porous

Highly porous ceramic fiber insulations are beginning to be considered as a replacement for firebrick insulations in high temperature, high pressure applications by the chemical process industry. However, the implementation of such materials has been impeded by a lack of experimental data and predictive models, especially at high gas pressure. The goal of this work was to develop a general, applied thermophysical model to predict effective thermal conductivity, keff, of porous ceramic fiber insulation materials and to determine the temperature, pressure, and gas conditions under which natural convection is a possible mode of heat transfer. A model was developed which calculates keff as the sum of conduction, convection, and radiation partial conductivities. The model was validated using available experimental data, including laboratory measurements made by this research effort. Overall, it was concluded that natural convection is indeed possible for the most porous insulations at pressures exceeding 10 atm. Furthermore, keff for some example insulations was determined as a function of temperature, pressure, and gas environment.

Sign in / Sign up

Export Citation Format

Share Document