How to measure the thermal conductivity of magnesium oxide

There are various methods to measure the thermal conductivity of magnesium oxide,and the following is a specific introduction

There are various methods to measure the thermal conductivity of magnesium oxide,and the following is a specific introduction:

Thermal conductivity instrument measurement method:This method involves using specialized thermal conductivity instruments to measure the rate of heat transfer of a sample under a temperature gradient.Through this method,the thermal conductivity value of magnesium oxide can be directly obtained.This method is easy to operate,with accurate and reliable measurement results,and is a commonly used method in laboratory and industrial applications.

Theoretical calculation method:In addition to experimental measurements,theoretical calculation methods can also be used to estimate the thermal conductivity of magnesium oxide.Common theoretical calculation methods include molecular dynamics simulation,density functional theory,etc.These methods obtain approximate values of thermal conductivity by calculating the energy and vibration frequency of molecules or crystal structures.

Improved protective hot plate design:By using the improved protective hot plate design,the thermal conductivity of polycrystalline magnesium oxide can be measured within the temperature range of 400 K to 1300 K.This method can verify the operability,accuracy,and repeatability of the equipment.

Boiling method:A device designed based on the principle of measuring the thermal conductivity of objects using boiling method,which can be used to measure the thermal conductivity of powder materials such as magnesium oxide.This method is suitable for measuring the thermal conductivity of powdered materials,and the experimental values are consistent with those obtained by other methods,proving its feasibility.

High temperature method:A method of measuring the thermal conductivity of refractory oxides at high temperatures,such as inducing heat in a metal sensor inside a hollow sample in the shape of a long sphere,and measuring its temperature at two points using an optical pyrometer.This method is particularly suitable for equipment and materials working under high temperature conditions.

Overall,measuring the thermal conductivity of magnesium oxide is a complex and important process that requires selecting appropriate methods based on specific application scenarios and conditions.Through in-depth research and application evaluation of these technologies,the performance advantages of magnesium oxide can be better utilized and meet the growing market demand.