Preparation method of environment-friendly aramid fiber dyeing carrier

Abstract

The invention relates to a preparation method of an environment-friendly aramid fiber dyeing carrier. The method comprises the following steps of (1) sequentially adding phthalic acid dipolyol aromatic ester and benzyl alcohol polyoxyethylene ether into a reaction kettle for mixing, and starting a stirrer for uniformly stirring; (2) after uniformly stirring for 45-60 minutes, adding fatty alcohol polyoxyethylene ether and an anionic emulsifier, slowly heating at the same time, controlling the temperature to be 80-95 DEG C, and controlling the mixing reaction time to be 4-8 hours; (3) after the mixing reaction time is over, starting a vacuum system, and continuing to uniformly stir for 1-3 hours; (4) turning off the vacuum system, starting to add a nonionic surfactant, and continuing to uniformly stir for 45-60 minutes; and (5) finally starting a circulating water cooling system until the temperature is reduced to 15-20 DEG C, starting to discharge a material, and filtering the material through a 80-mesh filter sieve, thereby obtaining the carrier. The method is easy to operate, clean and environmentally friendly, and the prepared aramid fiber dyeing carrier is high in color fastness, relatively low in toxicity and free of environmental pollution.

Description

technical field [0001] The invention relates to the field of aramid fiber dyeing carrier, in particular to a preparation method of aramid fiber dyeing carrier. Background technique [0002] In recent years, with the sustained and rapid growth of China's economy and the continuous improvement of domestic consumption capacity, the domestic demand for aramid fibers has also continued to grow. China's aramid fiber production capacity has grown at an astonishing rate, making my country gradually develop into an important processing base for aramid products in the world, and has become the country with the largest aramid fiber output in the world. [0003] Aramid fibers are hydrophobic fibers and lack polar groups. Generally, three dyeing methods are used: high temperature and high pressure dyeing method, hot melt dyeing method and carrier dyeing method. [0004] Among them, the carrier dyeing method is a low-temperature dyeing method in which carrier auxiliaries are added to the...

AI Technical Summary

Problems solved by technology

[0005] Early dyeing carriers such as halogenated aromatic hydrocarbons, phenol derivatives, benzoic acid, etc., easily caused the stability of the dye solution to decrease during the dyeing process of aramid fiber, and the dyes aggregated to cause dyeing defects; and the removal of the carrier after dyeing was difficult, resulting in color loss Decreased fastness; some carriers have strong toxicity and poor biodegradability, causing pollution to the environment