China Suppliers Pitch-Based Pre-Oxidation Furnace Oven Kiln for Factory Production of Carbon Fibers
Working Principles
The asphalt-based pre-oxidation furnace mainly uses high temperature and oxidizing atmosphere to cause an oxidation reaction of the asphalt-based carbon fiber precursor, realize the cyclization and cross-linking of the macromolecular chain, and convert it into a non-plastic heat-resistant trapezoidal structure, so that it will not melt or burn under the subsequent carbonization high temperature, and maintain the fiber morphology.
Frequently Asked Questions
What is the primary function of the asphalt-based pre-oxidation furnace?
The furnace utilizes high temperatures and an oxidizing atmosphere to trigger an oxidation reaction in the asphalt-based carbon fiber precursor.
What molecular changes occur during the pre-oxidation process?
The process enables the cyclization and cross-linking of the precursor's macromolecular chain, restructuring its internal chemical framework.
What structure does the precursor convert into after pre-oxidation?
It transforms into a non-plastic, highly heat-resistant trapezoidal structure that serves as a stable base for subsequent stages.
Why is the pre-oxidation step necessary before high-temperature carbonization?
Without pre-oxidation, the fibers would melt or burn during the high-temperature carbonization phase. This step ensures they maintain their fiber morphology.
How does the oxidizing atmosphere contribute to the process?
The oxidizing atmosphere, combined with controlled high heat, drives the essential chemical reactions needed to achieve cross-linking and thermal stability.