Desizing Treatment Processes of Glass Fiber Fabric

Jiangsu Aokai New Materials, a professional manufacturer of PTFE high-temperature cloth, introduces relevant knowledge for you. The desizing treatment of glass fiber fabric is mainly divided into three categories: heat treatment method, chemical method and biological enzyme method. Incomplete desizing will greatly weaken the bonding force between subsequent impregnated coating and glass fiber fabric, which is a key factor affecting the final performance of composite materials.

In industrial production, these processes are usually combined to achieve a better sizing removal effect. The table below summarizes their core information:

Hazards of Incomplete Desizing: Micro to Macro Performance Deterioration

If desizing is incomplete, the residual sizing forms an isolation film on fiber surfaces and severely impairs subsequent processing:

Physical barrier and weak interface layerResidual sizing covers the fiber surface, hindering resin infiltration and chemical bonding, and failing to form a stable integrated structure between fiber and matrix. Relevant studies have proved that when the residual sizing rate rises to 1.2%, the physical properties of laminated boards will change significantly.

Catalyst deactivation and poor compatibilityResidual substances cause catalyst poisoning and failure, or trigger polar interference, destroying the chemical bonding force between fibers and resin, and fundamentally deteriorating material performance.

Failure of reinforcement effectThe above microscopic defects will eventually lead to the collapse of overall mechanical properties of composite materials, such as greatly reduced interfacial adhesion, severe decline in mechanical strength (tensile performance may drop by up to 50%), and poor product durability.

The above content is provided by Jiangsu Aokai New Material Technology Co., Ltd.

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