CN112941892B

CN112941892B - Wool and cashmere fabric fading agent and fading method thereof

Info

Publication number: CN112941892B
Application number: CN202110142303.7A
Authority: CN
Inventors: 张珍竹; 伏广伟; 刘建勇; 王政; 周长文; 李正海; 汪洋; 韩文霞; 陈锦坚
Original assignee: CHINA TEXTILE ENGINEERING SOCIETY; Foshan Changran Technology Co ltd; Foshan Zhongfanglian Inspection Technology Service Co ltd; Tianjin Polytechnic University
Current assignee: CHINA TEXTILE ENGINEERING SOCIETY; Foshan Changran Technology Co ltd; Foshan Zhongfanglian Inspection Technology Service Co ltd; Tianjin Polytechnic University
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2022-08-09
Anticipated expiration: 2041-02-02
Also published as: CN112941892A

Abstract

The invention discloses a fading agent for wool and cashmere fabrics and a fading method thereof, wherein the fading agent comprises the following components in parts by weight: acid-base buffer: 2-10 parts of a reducing agent: 10-30 parts of a reduction protective agent: 5-10 parts. Dissolving the fading agent in water to prepare a fading solution, wherein the mass ratio of the fading agent to the water is 1: 5-10; putting the wool and cashmere fabrics into a fading solution at 60-90 ℃, shaking for 10-20min when soaking, and taking out for later use. The wool and cashmere fabric fading agent and the fading method thereof can carry out mild and efficient fading on dark wool and cashmere fabrics, simultaneously minimize the damage to fabric fibers, and can clearly distinguish the details of wool and cashmere scales by adopting a microscope projection method so as to realize the identification of the dark wool and cashmere fabrics. The color fading agent disclosed by the invention is low in cost, relatively environment-friendly and convenient in color fading operation.

Description

Wool and cashmere fabric fading agent and fading method thereof

Technical Field

The invention relates to the technical field of textile fading, in particular to a fading agent and a fading method for wool and cashmere fabrics.

Background

The cashmere is one of the rare special animal fibers, has fine fiber, high strength and good luster, is one of the best quality and highest price raw materials in the current world textile raw materials, and is known as 'fiber precious stone' and 'soft gold'. The product integrates the characteristics of light weight, warmness, looseness, soft hand feeling and the like which are beyond the reach of other animal fibers, and is deeply loved by consumers. Due to the high-grade nature of cashmere products, some manufacturers, in order to obtain high profits, incorporate wool fibers to reduce the cost and deceive consumers when producing cashmere products. For ordinary consumers, wool and cashmere fibers cannot be effectively identified, and the corresponding detection mechanism is required to be relied on. A large number of fiber detection workers have long been dedicated to the research of the identification technology of cashmere fibers and wool.

The common identification methods for cashmere and wool fibers include a chemical method, a physical method and a biological method, and at present, a detection mechanism mainly adopts a microscope projection method in the physical method to distinguish the wool from the cashmere, and qualitatively and quantitatively determines the wool and the cashmere by distinguishing scale details of the wool and the cashmere. However, dark wool and cashmere fabrics need to be faded and then detected. However, the existing fading agent is not thorough in fading, has large damage to scales of wool and cashmere fibers, is difficult to clearly show the structural characteristics of the scales of the wool and cashmere under a projector or a CU, has high identification difficulty, and affects the accuracy of results. Meanwhile, the existing color fading agent such as sodium hydrosulfite is easy to generate toxic gas in the using process, is not beneficial to environmental protection and is inconvenient to operate.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the fading agent and the fading method for the wool and cashmere fabrics, wherein the components in the fading agent are matched with each other and have synergistic effect, so that the fading of the deep color wool and cashmere fabrics can be successfully realized, the fiber damage to the wool and cashmere is small, the scales of the wool and cashmere can be clearly distinguished, and the identification of the deep color wool and cashmere fabrics is realized; the color fading operation is simple, and the environmental pollution can be effectively reduced.

In order to realize the invention, the invention adopts the following technical scheme:

the wool and cashmere fabric fading agent comprises the following components in parts by weight:

acid-base buffer: 2-10 parts;

reducing agent: 10-30 parts;

reduction protective agent: 5-10 parts.

Further, the acid-base buffer is a composite buffer system consisting of phosphate, EDTA, citric acid and ammonium sulfate.

Further, the reducing agent is one or more of TCEP, reducing sugar, sodium hydroxymethyl sulfonate and thiourea dioxide.

Further, the reduction protective agent is one or two of sodium sulfite and acrylamide.

Further, the color fading agent also comprises 1.5-10 parts by weight of a dispersing agent, a complexing agent and a penetrating agent, wherein the mass ratio of the dispersing agent to the complexing agent to the penetrating agent is 1:1: 1.

The invention also provides a fading method of the fading agent for the wool and cashmere fabrics, which comprises the following steps:

1) dissolving the wool and cashmere fabric fading agent in water to prepare a fading solution, wherein the mass ratio of the wool and cashmere fabric fading agent to the water is 1: 5-10;

2) putting the wool and cashmere fabrics into a fading solution at 60-90 ℃, shaking for 10-20min when soaking, and taking out for later use.

Further, the pH value of the fading solution is 2-12.

Compared with the prior art, the invention has the following beneficial effects: through the synergistic cooperation of all components in the fading agent and the reasonable selection of fading process conditions, the dark wool and cashmere fabrics can be subjected to mild and efficient fading, meanwhile, the damage to fabric fibers is minimized, and the details of wool and cashmere scales can be clearly distinguished by adopting a microscope projection method, so that the identification of the dark wool and cashmere fabrics is realized. The color fading agent disclosed by the invention is low in cost, relatively environment-friendly and convenient in color fading operation.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly described as follows:

FIGS. 1 and 3 are samples before fading;

FIG. 2 is a scale form of the faded wool and cashmere of the sample of FIG. 1;

FIG. 4 shows the wool cashmere flake form of the faded sample of FIG. 3.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terminology used herein in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention.

Example 1

acid-base buffer: 2 parts of (1);

reducing agent: 10 parts of (A);

reduction protective agent: 5 parts of the raw materials.

Dissolving the fading agent in water to prepare a fading solution, wherein the mass ratio of the fading agent to the water is 1:9, the pH value of the fading solution is 4.5, putting the wool and cashmere fabric into the fading solution at 90 ℃, shaking for 15min during soaking, and taking out for later use. The acid-base buffer is a composite buffer system consisting of phosphate, EDTA, citric acid and ammonium sulfate. The reducing agent is reducing sugar or sodium hydroxymethyl sulfonate. The reduction protective agent is sodium sulfite.

The results of the test on the fabrics before and after fading are shown in fig. 1 and 2. Fig. 1 is a sample before fading, and fig. 2 is the scale form of the faded wool and cashmere.

Example 2

acid-base buffer: 5 parts of a mixture;

reducing agent: 15 parts of a mixture;

reduction protective agent: 10 parts of (A);

complexing agent: 1 part;

dispersing agent: 1 part;

and (3) penetrant: 1 part.

Dissolving the fading agent in water to prepare a fading solution, wherein the mass ratio of the fading agent to the water is 3:17, the pH value of the fading solution is 8.5, putting the wool and cashmere fabric into the fading solution at 90 ℃, shaking for 10min during soaking, and taking out for later use. The acid-base buffer is a composite buffer system consisting of phosphate, EDTA, citric acid and ammonium sulfate. The reducing agent is sodium hydroxymethyl sulfonate and thiourea dioxide. The reduction protective agent is sodium sulfite and acrylamide. The dispersing agent, complexing agent and penetrating agent are conventional aids in the art and may be selected as desired.

The results of the test on the fabric before and after fading are shown in fig. 3 and 4. Fig. 3 is a sample before fading, and fig. 4 is a wool cashmere scale form after fading.

According to the detection results of the fabric before and after fading, the wool and cashmere fabric fading agent has small damage to wool and cashmere fiber scales, can clearly distinguish the wool and cashmere scales, and can realize the identification of the deep-color wool and cashmere fabric.

The above description is only a preferred embodiment of the present invention, and it should be noted that any modification and modification made by those skilled in the art without departing from the technical principle of the present invention should fall within the protection scope of the present invention.

Claims

1. The application of the wool and cashmere fabric fading agent in identification of dark wool and cashmere fabrics is characterized in that the fading agent comprises the following components in parts by weight:

acid-base buffer: 5 parts of a mixture;

reducing agent: 15 parts of (1);

reduction protective agent: 10 parts of (A);

complexing agent: 1 part;

dispersing agent: 1 part;

penetrant: 1 part;

dissolving the fading agent in water to prepare a fading solution, wherein the mass ratio of the fading agent to the water is 3:17, the pH value of the fading solution is 8.5, putting the wool and cashmere fabric into the fading solution at 90 ℃, shaking for 10min during soaking, and taking out for later use; the acid-base buffer is a composite buffer system consisting of phosphate, EDTA, citric acid and ammonium sulfate; the reducing agent is sodium hydroxymethyl sulfonate and thiourea dioxide; the reduction protective agent is sodium sulfite and acrylamide.