1.A Comparison of Abrasion Resistance Between Glass Fiber and Carbon Fiber Doctor Blades

Glass fiber and carbon fiber doctor blades are widely used in papermaking, printing, and manufacturing, with abrasion resistance being a core indicator affecting equipment efficiency and production costs. This article concisely compares their abrasion resistance from material composition, key influencing factors, and practical applications.

Material Basis of Abrasion Resistance

Glass fiber doctor blades consist of glass fiber tows + resin matrices (e.g., epoxy). Glass fibers have moderate hardness (Mohs ~4.5-5) and tensile strength but are brittle, with relatively low surface smoothness, leading to increased wear in high-intensity scenarios.

Carbon fiber doctor blades use high-strength carbon fiber tows + resin (epoxy/phenolic). Carbon fibers boast higher hardness (Mohs ~5-6) and lower friction coefficient, forming a rigid, smooth surface; the resin reinforces bonding, resisting fiber detachment under repeated friction.

Key Influencing Factors

1. Fiber-matrix synergy: Carbon fiber’s high hardness + low friction, paired with high-adhesion resin, creates a more wear-resistant structure. Glass fiber blades are prone to fraying or matrix peeling under long-term high-load friction.
2. Working condition adaptability: Carbon fiber blades maintain stability in high-temperature (>150℃) or abrasive particle-rich environments; glass fiber blades accelerate wear due to thermal aging or brittle fracture.