阅读说明：本技术 一种使羊绒柔软蓬松的方法 (Method for making cashmere soft and fluffy ) 是由 蒋庆云 于 2019-06-28 设计创作，主要内容包括：本发明公开了一种使羊绒柔软蓬松的方法,羊绒漂白并且除去残留过氧化氢后,在浴比为1：40的条件下,加入保险粉和醋酸,在温度为40~50℃下保温30min,排空后用去离子水清洗1~2次,在浴比为1：20的条件下加入蓬松剂,排空后再加入柔软剂,出缸后在40~50℃的热风下干燥。能有效改善漂白对羊绒纤维造成的损伤。同时,本发明公开了一种玉米油基羊绒柔软剂,具有绿色环保,效果好的优点。(The invention discloses a method for softening and fluffing cashmere, which comprises the steps of bleaching cashmere and removing residual hydrogen peroxide, adding sodium hydrosulfite and acetic acid under the condition that the bath ratio is 1: 40, keeping the temperature at 40 ~ 50 ℃ for 30min, cleaning with deionized water for 1 ~ 2 times after emptying, adding a fluffing agent under the condition that the bath ratio is 1:20, adding a softening agent after emptying, and drying at 40 ~ 50 ℃ hot air after taking out of a cylinder.)

1. A method for softening and fluffing cashmere is characterized in that after the cashmere is bleached and residual hydrogen peroxide is removed, sodium hydrosulfite and acetic acid are added under the condition that the bath ratio is 1: 40, the temperature is kept at 40 ~ 50 ℃ for 30min, after emptying, deionized water is used for cleaning for 1 ~ 2 times, under the condition that the bath ratio is 1:20, a fluffing agent is added, after emptying, a softening agent is added, and after taking out of a cylinder, the cashmere is dried under hot air at 40 ~ 50 ℃ after taking out of the cylinder.

2. The method for softening and fluffing cashmere according to claim 1, characterized in that the amount of sodium hydrosulfite added is 1 ~ 3%, the amount of acetic acid added is 0.5 ~ 1%, after emptying and washing, the amount of softener added is 1 ~ 5%, and the amount of fluffing agent added is 1 ~ 10% by weight of the cashmere.

3. The method for softening and fluffing cashmere according to claim 1, wherein the fluffing agent is CWF, and the treatment process comprises the steps of diluting the fluffing agent with a proper amount of warm water, preparing a working solution with a bath ratio of 1:20 and a temperature of 35 ~ 40 ℃, adjusting the pH value to be 6 ~ 8, stirring uniformly, putting the cashmere fabric, keeping the temperature for 30min, and stirring once every 5 min.

4. The method for softening and fluffing cashmere according to claim 1, wherein the softener is a corn oil-based softener, and the treatment process comprises the steps of diluting the softener with a proper amount of warm water, preparing a working solution with a bath ratio of 1:20 and a temperature of 35 ~ 40 ℃, adjusting the pH value to be 6 ~ 7, stirring uniformly, putting the working solution into cashmere fabric, keeping the temperature for 20 ~ 40min, and stirring once every 10 min.

5. The method for softening and fluffing cashmere according to claim 4, characterized in that the corn oil-based softening agent is prepared by the following steps:

preparing epoxy corn oil by using corn crude oil as a raw material, acetic acid as a catalyst, EDTA as a cocatalyst and sodium percarbonate as an oxidant;

taking epoxy corn oil and acrylic acid as raw materials, 2-tert-butylhydroquinone as a polymerization inhibitor and triphenylphosphine as a catalyst, and synthesizing epoxy corn oil acrylate through an esterification reaction;

and (3) carrying out addition reaction on the epoxy corn oil acrylate and the polyether amino polysiloxane under the action of a palladium-carbon catalyst, and purifying to obtain the corn oil softener.

6. The method for softening and fluffing cashmere according to claim 5, wherein the mass ratio of the corn oil to the sodium percarbonate in the step (1) is 1:1 ~ 4, the mass of the corn oil is 8 ~ 15% acetic acid, the mass of the EDTA is 1 ~ 5%, the reaction temperature is 35 ~ 45 ℃, and the reaction time is 6 ~ 12 hours.

7. The method for softening and fluffing cashmere according to claim 5, wherein the mass ratio of the epoxy corn oil to the acrylic acid in the step (2) is 1 ~ 5:1, the reaction temperature is 70 ~ 85 ℃ and the reaction time is 1 ~ 3 hours, and the triphenylphosphine accounts for 1 ~ 8% of the mass of the epoxy corn oil.

8. The method for softening and fluffing cashmere according to claim 5, wherein the mass ratio of the epoxy corn oil acrylate to the polyether amino polysiloxane in the step (3) is 1 ~ 3:1, the amount of the catalyst is 0.5 ~ 2% of the weight of the epoxy corn oil acrylate, the reaction temperature is 60 ~ 70 ℃, and the reaction time is 1 ~ 5 hours.

Technical Field

The invention relates to a cashmere processing method, in particular to a method for making cashmere soft and fluffy.

Background

The cashmere fiber yield is very low, is a rare and precious animal fiber, is about 1 percent of the wool fiber yield all over the world, and is very expensive. The growth environment of the goat is relatively complex and is related to environmental factors such as sunlight, rain and the like. Resulting in the color change of cashmere and simultaneously influencing the quality of cashmere fibers. For some high-grade fabrics which need to be dyed with light colors or even white colors and have bright colors, bleaching treatment is needed to be carried out on cashmere. However, after the cashmere is bleached, due to the action of the oxidizing agent, the scales of the cashmere fibers are damaged, the softness of the cashmere after dyeing is poor, and the bleaching process is treated by the softening agent and the raising agent, so that the hand feeling of the cashmere can be effectively improved.

The softening agent on the market at present has the following defects: after the fabric is used, the fabric has yellowing phenomenon, has an inhibiting effect on fluorescent whitening agents, has certain irritation on human bodies, is low in biodegradability, and has certain pollution on the environment.

Disclosure of Invention

In view of the above problems, the invention discloses a method for softening and fluffing cashmere, wherein a softening agent and a fluffing agent are added after the cashmere is bleached, so that the damage of bleaching to cashmere fibers can be effectively improved. Meanwhile, the invention discloses a corn oil-based cashmere softener which has the advantages of environmental friendliness and good effect.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

a method for softening and fluffing cashmere comprises bleaching cashmere, removing residual hydrogen peroxide, adding sodium hydrosulfite and acetic acid at bath ratio of 1: 40, keeping the temperature at 40 ~ 50 deg.C for 30min, cleaning with deionized water for 1 ~ 2 times after emptying, adding fluffing agent at bath ratio of 1:20, adding softening agent after emptying, taking out, and drying with hot air at 40 ~ 50 deg.C.

Preferably, the content of sodium hydrosulfite is 1 ~ 3% and acetic acid is added according to the weight ratio of cashmere

In an amount of 0.5 ~ 1%, after emptying and washing, the amount of softener added was 1 ~ 5% and the amount of bulking agent added was 1 ~ 10%.

Further, the fluffing agent is CWF, and the treatment process comprises the following steps: diluting with appropriate amount of warm water

Preparing a fluffing agent, preparing a working solution with a bath ratio of 1:20 and a temperature of 35 ~ 40 ℃, adjusting the pH value to be 6 ~ 8, stirring uniformly, putting the mixture into cashmere fabric, keeping the temperature for 30min, and stirring once every 5 min.

Further, the softening agent is a corn oil-based softening agent, and the treatment process comprises the following steps: is suitable for use

Diluting the softening agent with warm water, preparing into working solution with bath ratio of 1:20 and temperature of 35 ~ 40 deg.C, adjusting pH to 6 ~ 7, stirring, placing into cashmere fabric, keeping temperature for 20 ~ 40min, and stirring once every 10 min.

The preparation method of the corn oil-based softening agent comprises the following steps:

(1) preparing epoxy corn oil by using corn crude oil as a raw material, acetic acid as a catalyst, EDTA as a cocatalyst and sodium percarbonate as an oxidant;

(2) taking epoxy corn oil and acrylic acid as raw materials, 2-tert-butylhydroquinone as a polymerization inhibitor and triphenylphosphine as a catalyst, and synthesizing epoxy corn oil acrylate through an esterification reaction;

(3) and (3) carrying out addition reaction on the epoxy corn oil acrylate and the polyether amino polysiloxane under the action of a palladium-carbon catalyst, and purifying to obtain the corn oil softener.

Preferably, in the step (1), the mass ratio of the corn oil to the sodium percarbonate is 1:1 ~ 4, and the corn oil and the sodium percarbonate are mixed according to jade

The rice oil has a mass of 8 ~ 15% of acetic acid and 1 ~ 5% of EDTA, and the reaction temperature is 35 ~ 45 ℃ and the reaction time is 6 ~ 12 hours.

Preferably, the mass ratio of the epoxy corn oil to the acrylic acid in the step (2) is 1 ~ 5:1

The content of triphenylphosphine is 1 ~ 8% based on the weight of the epoxy corn oil, the reaction temperature is 70 ~ 85 ℃, and the reaction time is 1 ~ 3 hours.

Preferably, the epoxy corn oil acrylate and the polyether amino polysiloxane in the step (3)

The mass ratio is 1 ~ 3:1, the dosage of the catalyst is 0.5 ~ 2 percent of the weight of the epoxy corn oil acrylate, the reaction temperature is 60 ~ 70 ℃, and the reaction time is 1 ~ 5 hours.

The softening agent belongs to a modified organic silicon softening agent, and the softening agent endows the fabric with the characteristics of gloss, crease resistance, elasticity, stain resistance, wear resistance, strong woolen feeling and the like. The content of unsaturated fatty acid in the corn oil is as high as 80-85%, the molecular structure contains more unsaturated bonds, the molecular chain is longer, the crosslinking density is small, the corn oil is modified to a certain degree and then undergoes an addition reaction with silicone oil, and the obtained product, namely the corn oil-based softener, contains some active groups (such as hydroxyl groups) and can be combined with fabrics. In addition, because the silicon-oxygen bond can rotate freely, certain softness can be endowed to the fabric, and the corn oil has water repellency, so that the prepared corn oil-based softener has a good water repellency effect.

The invention adopts the leavening agent CWF which is purchased from Vikang company, and the treated fabric is fluffy and has high elasticity, and the hand feeling and the appearance are greatly improved. The swelling agent is designed to be hydrophilic, the surface of the treated fiber has no grease feeling, and the swelling agent has high-efficiency swelling property, and meanwhile, the brightness of the treated suede is obviously increased.

The invention has the beneficial effects that: after the cashmere is bleached, a softening agent and a swelling agent are added, so that the hand feeling of the cashmere fiber can be effectively improved. The softening agent disclosed by the invention has the advantages of stable performance, small dosage, biodegradability, environmental friendliness and yellowing resistance, and is a novel green softening agent.

Drawings

FIG. 1 is a scanning electron microscope image before bleaching cashmere;

FIG. 2 is a scanning electron microscope image of bleached cashmere;

FIG. 3 is a scanning electron microscope image of a preferred embodiment of the present invention.

Detailed Description

Fig. 1 is a scanning electron microscope image before cashmere bleaching, and the scale layer is kept intact. Fig. 2 is a scanning electron microscope image of bleached cashmere, and it can be seen from fig. 2 that compared with the cashmere before bleaching, the bleached cashmere scale layer is damaged to a certain extent, the lifting degree of the scale edge is increased, and peeling occurs. Fig. 3 is a scanning electron microscope image of cashmere treated with a softener and a bulking agent according to an embodiment of the present invention, and it can be seen from the image that the damage degree of the cashmere scale layer is reduced, on one hand, the damaged cashmere scale layer is peeled off after being washed, on the other hand, the scale layer is protected, so that the surface of the cashmere scale layer is smooth and complete, and is not easy to damage, thereby improving the hand feeling of cashmere.

The present invention will be further described below by way of specific embodiments.