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Plasma cleaning of composite materials to improve the surface bonding performance

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24 Mar,2021

Plasma cleaning of composite materials to improve the surface bonding performance:
Since the emergence of plasma cleaning technology, its application has been increasingly extensive with the rapid development of electronics and other industries. At present, plasma cleaning has been widely used in semiconductor and optoelectronic industry, and has been widely promoted in many technical fields such as automobile, aerospace, medical treatment, decoration and so on. In recent years, plasma cleaning technology has been widely used in polymer surface activation, electronic device manufacturing, plastic bonding treatment, improvement of biocompatibility, prevention of biological contamination, microwave control, precision machinery parts cleaning and other fields.

CRF Plasma cleaning
To improve the bonding performance of the composite material surface:
Continuous fibers such as carbon fiber and aramid fiber are characterized by light weight, high strength, excellent thermal stability and fatigue resistance. The products used to enhance thermosetting and thermoplastic resin matrix composites have been widely used in aircraft, automobiles, sports, electrical appliances and other fields. But commercial fibrous materials usually have an organic coating on their surface, which is used to make composites.


The weak interfacial layer is formed during the processing process, which seriously affects the interfacial bond between resin and fiber. Therefore, before preparing the composite material, it is necessary to remove it by certain treatment means.


Plasma cleaning technology can effectively avoid the damage of chemical solvents to the properties of the material itself, introduce a variety of active functional groups to the surface of the material, increase the surface roughness, improve the surface free energy of the fiber, effectively strengthen the interface between the resin and fiber, and improve the comprehensive properties of the composite material. The interlaminar shear strength of aramid fiber was compared by solvent and plasma washing methods. The results show that the plasma washing method can improve the interfacial properties of the composites more obviously under better conditions.

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