Preparation method of silk fibre with function of removing formaldehyde

Abstract

The invention discloses a preparation method of silk fibre with a function of removing formaldehyde, mainly comprising the following steps: (1) dissolving procyanidin with the weight equivalent to 8-12 percent of the silk fibre into water, adding 0.2-0.5 milliliters of glacial acetic acid per each litre of water into the solution and uniformly stirring, adding ferrous sulphate into the solution according to the mass ratio of the ferrous sulphate to the procyanidin of 1 to 1-3 and stirring, adding a sodium bicarbonate solution into the solution to regulate the pH value of the mixing solution to 5-8, increasing the temperature of the mixing solution to 50-60 DEG C, and preserving the heat of the mixing solution for 20-40 minutes; (2) adding 0.5 gram of peregal O and 2-10 grams of salt intoeach litre of the obtained mixing solution and uniformly stirring; (3) adding the silk fibre into the obtained mixing solution and processing for 1-12 hours under the conditions that temperature is 25-90 DEG C and liquor ratio is 1 to 20-40, and then taking the silk fibre out and washing and drying the silk fibre. The obtained silk fibre can enable the removal rate of the formaldehyde contained inindoor air to achieve more than 75 percent.

Description

technical field

[0001] The invention relates to the field of preparation of functional textile fibers, in particular to a method for preparing silk fibers with the function of removing formaldehyde. Background technique

[0002] Humans spend about 90% of their time indoors, and the quality of indoor air directly affects people's health. In recent years, with the rapid development of my country's economy and the continuous improvement of people's living standards, more and more families have begun to pay attention to the decoration of their living rooms. Due to the existence of low-quality materials in the market, when people beautify their homes, they also bring toxic substances that pollute the air into their homes. A large number of building materials and decoration materials containing formaldehyde have entered the room. The volatilization of formaldehyde seriously pollutes the indoor air and induces various diseases.

[0003] Formaldehyde is the most important one amo...