With the performance advantages of carbon fiber composite materials widely recognized, in order to better performance advantages, by changing the matrix resin using thermoplastic resin to better improve the performance of carbon fiber materials, then this thermoplastic resin is what we say about thermoplastic carbon fiber, this article we want to talk about the factors affecting the performance of thermoplastic carbon fiber.

 

Thermoplastic carbon fiber has higher performance advantages than traditional thermosetting carbon fiber, and can also provide specific performance advantages, widely used in aerospace, automotive, energy and sports equipment and other fields. However, the properties of thermoplastic carbon fiber are affected by many aspects, including the properties of the fiber itself, the process parameters during the preparation process, and the environment in which it is used.

 

First, the properties of thermoplastic carbon fibers are closely related to the properties of the fibers themselves. The raw material of the fiber, the diameter and length of the fiber, the arrangement of the fiber and the surface shape of the fiber will affect the performance of the thermoplastic carbon fiber. For example, the use of high-purity carbon fiber raw materials can improve the mechanical strength and stiffness of thermoplastic carbon fibers, while longer fiber lengths can increase their tensile strength. In addition, the fiber arrangement and surface morphology also have an important effect on the thermal conductivity and interface bonding strength of the thermoplastic carbon fiber. The use of long fiber continuous carbon fiber reinforcement, this long fiber continuous carbon fiber can provide better load transfer and tensile strength, resulting in higher strength and stiffness of the composite. For example, when the composite material is cut or pulled, the fiber is pulled out from the matrix, such a drawing process is conducive to absorbing the energy provided by the loading, in a certain length range, the longer the fiber, the greater its energy absorption, the more significant its strength. In the same volume, because the longer the single fiber, the fewer the number of fiber roots, the less the stress concentration generated at the fiber end, the more difficult the destruction of the material. From the results of practical application feedback, the various properties of continuous carbon fiber are better than other fibers such as short fiber or powder

 

Secondly, the process parameters in the preparation process have an important effect on the properties of the thermoplastic carbon fiber. The process of preparing thermoplastic carbon fiber includes fiber pretreatment, fiber heat treatment and fiber molding. In the pretreatment process, the surface treatment and functional modification of the fiber can improve the interface binding property and heat resistance of the fiber. The temperature and time parameters during heat treatment can regulate the crystallinity and crystal size of the fibers, thus affecting the mechanical properties and thermal conductivity of the fibers. The temperature and pressure parameters during the molding process can adjust the orientation and compactness of the fiber, and further affect the mechanical properties and thermal conductivity of the thermoplastic carbon fiber.

 

Finally, the use of the environment will also have a certain impact on the performance of thermoplastic carbon fiber. Thermoplastic carbon fiber may undergo thermal decomposition and oxidation reaction at high temperature, resulting in decreased mechanical properties and heat resistance of the fiber. Reactions such as hydrolysis and water corrosion may occur in the thermoplastic carbon fiber under hot and humid environment, which will affect the interface bonding properties and mechanical properties of the fiber. In addition, the application environment of the thermoplastic carbon fiber in the composite material will also have an impact on its performance, such as high-speed airflow and impact loads in the aerospace field.

 

In summary, the properties of thermoplastic carbon fibers are affected by many aspects. Understanding and controlling these influencing factors can optimize the performance of thermoplastic carbon fiber and improve its application effect in various fields. Future research should further delve into the relationship between these influencing factors and develop more advanced and controllable preparation processes to meet the evolving application needs.