high strength fibrous material based on natural fibers, process for their preparation, and their use for the manufacture of composite materials

摘要

Method for producing a fibrous material in which a natural fiber material alkalis disgregacon, characterized in that the fiber material is treated without the use of mechanical stress, alkaline unmaterial at a concentration from 5 to 5 13 grams / liter a) from 10 minutes to 3 hours at a temperature from to 30 ° C, and then b) from 20 minutes to 1.5 hours at a temperature from 80 to 150 ° C, and optionally rinsed and / or dried.