Warum lassen sich manche Schalen leicht und andere nur schwer abziehen? Hängt das mit der Qualität zusammen?
In fiber optic manufacturing and engineering construction, the physical quantity described by “easy to strip” and “difficult to strip” is the Fiber Coating Strip Force.
Strip force refers to the tensile force (usually measured in Newtons, \text{N}) required to mechanically strip the polymer coating from the surface of the quartz glass cladding (typically 125\ \text{µm} in diameter) along the fiber axis using a specialized stripping tool.
I. Why are some fiber optics easy to strip, while others are difficult?
The difference in the stripping feel of fiber optics is determined by a combination of material physical properties, chemical interfacial bonding, and environmental factors:
- Coating Material and Curing Degree (UV Curing)
- Standard communication single-mode optical fibers typically use a dual-layer UV-cured acrylate system: the inner coating is softer with a low Young’s modulus, acting as a buffer and shock absorber; the outer coating is harder, providing abrasion resistance and mechanical protection.
- During the fiber drawing process in the tower, the UV dose determines the cross-linking degree of the coating. If overcured, the inner coating’s elastic modulus increases, and it becomes brittle, increasing frictional resistance at the glass interface; if undercured, unreacted oligomers or monomers remain in the coating, leading to a sticky feel,