Aramid fiber surface modification processing method

Abstract

The invention relates to process method for aramid fiber surface modification that includes the following steps: drying aramid fiber, sealing the dried aramid fiber with gas medium or liquid medium in glass reactor, using gama radial of 60Co irradiating for 12-15 hours, under normal temperature and normal pressure, irradiation dose is 0.1-3000kGy. The invention has the advantages of simple technology, environment protection, high efficiency and suitable for industrial manufacturing.

Description

technical field

[0001] The invention relates to a polymer material modification treatment method. Background technique

[0002] Aramid fiber is currently one of the organic fibers with the best comprehensive properties produced on a large scale in the world. It has high strength, high modulus, strong toughness and excellent heat resistance, so it is widely used in aerospace and automotive fields Reinforcements for advanced composites. However, the amide group in the aramid fiber is separated by the aromatic ring and forms a π-conjugation effect with the benzene ring. The internal rotation potential energy is quite high, and the molecular chain links are flat and rigid. That is, the main chain structure of the para-aramid fiber has a high degree of Regularity, the macromolecule exists in a very stretched state, thus forming a regular folded layer structure arranged along the axial direction, and the fiber has a unique "core-skin" structure. The surface polarity is not high,...