Cellulose short fibres and their performance
Abstract
Cellulose short fibres are made by mechanically pulverising high-quality cellulose fibre and can replace asbestos as a reinforcement fibre in friction materials. They are white fibres derived from plant (wood) sources, described in the article as non-toxic, non-irritating to workers and non-polluting. Reported technical parameters include ash 15%, cellulose content above 85%, specific gravity 1.4–1.5, bulk density 0.5 g/cm³ and pH 7.
Advantages cited include easy dispersion without electrostatic clumping during high-speed mixing (unlike many organic or inorganic asbestos substitutes), direct carbonisation around 300 ℃ without destroying the internal structure while increasing porosity and stabilising friction performance, and a price about 1/30 that of aramid fibre, which can significantly reduce the cost of asbestos-free friction materials. It is often used together with other non-asbestos fibres.
Key facts
- Source: high-quality cellulose fibre (plant / wood origin), mechanically pulverised
- Appearance: white fibre
- Reported parameters: ash 15%; cellulose content >85%; specific gravity 1.4–1.5; bulk density 0.5 g/cm³; pH 7
- Processability: easy to disperse, no electrostatic clumping under high-speed mixing
- Thermal behaviour: carbonises around 300 ℃, increases porosity, helps stabilise friction performance
- Cost: about 1/30 the price of aramid fibre (per original article)
- Use: reinforcement in asbestos-free friction materials, often combined with other non-asbestos fibres
The original article is in Chinese; see the Chinese version for the full text. This page provides the English title, abstract and key facts only — translated and compiled from the original, without full verbatim translation.