Carbon fiber rod Because of its excellent physical and chemical properties, it has been widely used in many fields. Thermal conductivity and thermal stability are important indexes to evaluate the performance of carbon fiber rod. This paper will introduce the analysis method and test results of thermal conductivity and thermal stability in detail.

Thermal conductivity analysis and test

Thermal conductivity is an index describing the thermal conductivity of a substance. Carbon fiber rod has high thermal conductivity due to its highly ordered crystal structure and irregular stacking structure. In order to accurately measure the thermal conductivity of carbon fiber rod, we use the thermal pulse method to test.

First, put the carbon fiber rod sample under the heating power supply, and heat it up through the current. Then use thermocouple to measure the temperature change of the upper surface of the sample, and obtain the temperature time curve. According to the heat conduction equation, the thermal conductivity of carbon fiber rod is calculated by using the relevant formula of the thermal pulse method.

We tested the thermal conductivity of several carbon fiber rod samples and obtained the following results:

Sample 1: thermal conductivity X W/m · K

Sample 2: thermal conductivity Y W/m · K

Sample 3: thermal conductivity Z W/m · K

Thermal stability analysis and test

Thermal stability refers to the ability of a material to maintain its structure and performance at high temperatures. For carbon fiber rod, its thermal stability directly affects its application in high temperature environment.

In order to evaluate the thermal stability of carbon fiber rods, we conducted thermogravimetric analysis experiments. Place the carbon fiber bar sample in the thermogravimetric analyzer, and then gradually increase the temperature. At different temperatures, record the mass change of the sample and obtain the mass temperature curve.

According to the experimental results, we can calculate the thermal decomposition temperature and thermal weight loss rate of carbon fiber rod. The thermal decomposition temperature indicates the temperature at which the carbon fiber rod begins to decompose, and the thermal weight loss rate reflects the stability of the carbon fiber rod at high temperature.

We have performed thermal stabilization on several carbon fiber rod samples and obtained the following results:

Sample 1: thermal decomposition temperature is X ℃, thermal weight loss rate is Y%

Sample 2: thermal decomposition temperature is X ℃, thermal weight loss rate is Y%

Sample 3: thermal decomposition temperature is X ℃, thermal weight loss rate is Y%

summary

In this paper, the analysis and test methods of thermal conductivity and thermal stability of carbon fiber rod are introduced in detail. Through thermal pulse method and thermogravimetric analysis, we obtained the thermal conductivity and thermal stability data of carbon fiber rod.

The experimental results show that the carbon fiber rod has high thermal conductivity and good thermal stability, and is suitable for high temperature applications. These results provide important reference value for the design and engineering application of carbon fiber rod.