Dyeing method for enhancing mechanical property of para-aramid paper

Abstract

The invention belongs to the technical field of new materials, and particularly relates to a dyeing method for enhancing a mechanical property of para-aramid paper. The method specifically comprises the following steps: (1) immerging the para-aramid paper in aluminum sulfate aqueous solution, heat-preserving and soaking; draining and taking out, performing steam treatment; (2) immerging in a coloring agent, soaking and performing ultrasonic treatment by an ultrasonic wave, draining and taking out, and treating in vacuum, wherein the coloring agent is prepared by the following raw materials: goat milk, purple mulberries, fresh edible amaranth, fresh lycium ruthenicum, xanthan gum, sodium polystyrenesulfonate, maleic anhydride, potassium oxalate, wintersweet polysaccharide, radix rehmaniae preparate polysaccharide, ethyl alcohol and water; and (3) placing in a magnetic field and performing magnetization treatment, hot-pressing and drying. The dyeing is uniform and thorough, the color isbright and glossy, and is not faded and changed even if the color is exposed under the sun for a long time and infiltrated by rainwater for a long time, the dyeing effect is excellent, and the tensilestrength, the modulus and the breaking elongation of the para-aramid paper can be effectively improved, so the mechanical property of the para-aramid paper is remarkably enhanced.

Description

technical field [0001] The invention belongs to the technical field of new materials, in particular to a dyeing method for enhancing the mechanical properties of para-aramid paper. Background technique [0002] Due to the presence of a large number of benzene rings on the main chain of the aramid fiber, it has a high orientation crystallization along the axial direction, and the steric hindrance effect of the benzene ring also makes it difficult for the amide group to react chemically or otherwise interact with other atoms or groups. , In addition, due to the lack of chemically active groups on the surface of aramid fiber, the surface wettability is poor, and the high crystallinity in the fiber structure makes the fiber surface smooth, which affects the bonding performance between it and the substrate, so that the mechanical properties of aramid fiber paper exist. Certain defects; in addition, the color and luster of aramid paper sold on the market is single, thereby making ...

AI Technical Summary

Problems solved by technology

[0002] Due to the presence of a large number of benzene rings on the main chain of the aramid fiber, it has a high orientation crystallization along the axial direction, and the steric hindrance effect of the benzene ring also makes it difficult for the amide group to react chemically or otherwise interact with other atoms or groups. , In addition, due to the lack of chemically active groups on the surface of aramid fiber, the surface wettability is poor, and the high crystallinity in the fiber structure makes the fiber surface smooth, which affects the bonding performance between it and the substrate, so that the mechanical properties of aramid fiber paper exist. Certain defects; in addition, the color of aramid paper sold on the market is single, which limits its use quality and application quality, so a dyeing method that enhances the mechanical properties of aramid paper should be provided

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