CN103382663B

CN103382663B - High pressure dip dyeing process of silk plied yarn bobbin yarns

Info

Publication number: CN103382663B
Application number: CN201310250935.0A
Authority: CN
Inventors: 徐先林; 古远旺; 沈苏萌
Original assignee: DONGTAI SUMENG KNITTING FASHION Co Ltd
Current assignee: Jiangsu Sumeng Knitting Fashion Co.,Ltd.
Priority date: 2013-06-20
Filing date: 2013-06-20
Publication date: 2015-07-15
Anticipated expiration: 2033-06-20
Also published as: CN103382663A

Abstract

The invention relates to a dyeing process of silk plied yarns, and in particular to improvement of a dip dyeing process of silk plied yarn bobbin yarns. The high pressure dip dyeing process of the silk plied yarn bobbin yarns contains five steps of dyeing of the silk plied yarn bobbin yarns and process conditions of each step. The high pressure dip dyeing process of the silk plied yarn bobbin yarns has the advantages of uniform dyeing, good quality, high efficiency and low residual liquid concentration, and is more conducive to environmental protection.

Description

Silk strand cylinder yarn high pressure exhaust process

Technical field:

The present invention relates to silk strand dyeing, particularly relate to the improvement of silk strand cylinder yarn exhaust process.

Background technology:

The dyestuff adopted in traditional silk dyeing process is neutral or ACID DYES, and silk and dyestuff rely on ionic bond and form Van der Waals force and be combined, and this adhesion is more weak, and the defect of this traditional dyeing process is that silk easily fades and more not easily dyes dark colour.Therefore, current industry many employings REACTIVE DYES dyes to silk, silk and dyestuff generation chemical reaction in dyeing course, and finally form covalent bonds, this combination is stable and firm, greatly improves the dyeing quality of silk, but still has the following disadvantages:

Silk strand becomes strand after being pooled capital by more than two or two silkworm single twistings, and its sectional area is many times of monofilament; Its twist is also high than the twist of monofilament.At present, industry is to hank dyeing in open slot under the dyeing of silk strand all employing normal pressure, if dye amount is many under every reeled yarn, so imbue is difficult to silk strand, easily occurs " Bai Xin " phenomenon, if dye amount is few under every reeled yarn, and dyeing cycle lengthens, so dyeing, cost is high, efficiency is low.

Current silk strand even dyeing and the high dyeing of efficiency there is not yet, and also do not find in data and media report.

Summary of the invention:

For the above-mentioned deficiency existing for prior art; technical problem to be solved by this invention to provide a kind of silk strand cylinder yarn high pressure exhaust process; the advantage that this technique has even dyeing, quality is good, efficiency is high, raffinate concentration is low, is more conducive to environmental protection.

In order to solve the problems of the technologies described above, the scheme of technical solution problem of the present invention is: silk strand cylinder yarn high pressure exhaust process, and its step is as follows:

1, the silk strand cylinder yarn through refining is placed in dye vat, then after the bath raio of 1: 10 ~ 12, injects steam toward water filling in described dye vat;

2, when in described dye vat, the temperature of water is elevated to 40 ~ 45 DEG C, in described dye vat, add dilution and the REACTIVE DYES of mixing thoroughly and auxiliary agent, form dye liquor, and steam pressure is increased to 1.5 ~ 1.7 mark pressures, start dyeing, continue to heat up with the heating rate of 1 DEG C/min after 15 ~ 25 minutes;

3, when the temperature of described dye liquor is elevated to 60 ~ 65 DEG C, in described dye liquor, add soda ash, and make the pH value of described dye liquor between 8-9, continue to heat up with the heating rate of 1 DEG C/min after 15 ~ 25 minutes;

4, when the temperature of the described dye liquor of pH value between 8-9 is elevated to 90 ~ 95 DEG C, continue 10 ~ 15 minutes to end of dyeing, after then the steam pressure in described dye vat being down to normal pressure, discharge the dye liquor in described dye vat;

5, at ambient pressure, again add soaping agent toward water filling in described dye vat, bath raio is 1: 10 ~ 12, start to soap and be rapidly heated to 85 ~ 95 DEG C, discharges the tail washings in described dye vat after continuing 15 ~ 25 minutes soap.

After adopting such scheme, owing to steam pressure to be increased to 1.5 ~ 1.7 mark pressures in dyeing course, substantially increase the permeability of dye liquor to silk strand, make silk strand even dyeing, occur without " Bai Xin " phenomenon, and not easily fade, the used time is few, obtain obvious beneficial effect, concrete manifestation is as follows:

1. dye uptake more than 95%, COLOR FASTNESS more than 4 grades, can contaminate very dark color, such as black etc., does not damage the inherent characteristic of silk, and dyeing quality is good.

2. dyeing cycle shortens 20% than normal temperature hank dyeing, and dyeing product injected volume improves more than 5 times, and therefore staining efficiency improves greatly, and meanwhile, bath raio is only 1/2 of traditional handicraft, can using water wisely, reduces tail liquid emissions amount.

3. under elevated pressure conditions, be easy to the thick line that imbue silk strand is such, evenly, without " Bai Xin " phenomenon, Color is good in colouring.

4. because dye uptake is high, COLOR FASTNESS is high, so raffinate concentration is low, is conducive to protection of the environment.

Silk strand cylinder yarn high pressure exhaust process of the present invention is applicable to the dyeing of spun silk strand equally.

Mechanism of the present invention is:

1) the silk strand cylinder yarn after refining is immersed in 40 ~ 45 DEG C, be pressurized to 1.5 ~ 1.7 mark pressures in the dye liquor of bath raio 1: 10 ~ 12, and silk strand is soaked into very soon, and this ensures even dyeing and the key of not " Bai Xin ".

2) when temperature is raised to more than 60 DEG C, pH value 8-9, is at this moment adsorbed on hydroxyl, amino group generation nucleophilic displacement of fluorine or the nucleophilic addition in the REACTIVE DYES of the inner and surrounding of silk strand and natural silk and forms covalent bonds; The effect of alkali makes the tyrosine in silk protein and the hydroxyl ion in serine, makes ammonia atom on amino generate lone electron pair, thus with dyestuff generation covalent bonds, make dyestuff become the unbreakable part of silk fiber, dyeing product rate is high.

3) along with temperature raises, reaction acceleration, when temperature is raised to more than 95 DEG C, REACTIVE DYES starts hydrolysis, raffinate concentration is down to very low, decreases blowdown.

Detailed description of the invention:

Silk strand cylinder yarn high pressure exhaust process, its step is as follows:

Claims

1. silk strand cylinder yarn high pressure exhaust process, is characterized in that: (1), by being placed in dye vat through concise silk strand cylinder yarn, then after the bath raio of 1: 10 ~ 12, inject steam toward water filling in described dye vat;

(2) when, in described dye vat, the temperature of water is elevated to 40 ~ 45 DEG C, dilution is added and the REACTIVE DYES of mixing thoroughly and auxiliary agent in described dye vat, form dye liquor, and steam pressure is increased to 1.5 ~ 1.7 standard atmospheric pressures, start dyeing, continue to heat up with the heating rate of 1 DEG C/min after 15 ~ 25 minutes;

(3), the temperature of described dye liquor is when being elevated to 60 ~ 65 DEG C, adds soda ash, and makes the pH value of described dye liquor between 8-9, continue to heat up with the heating rate of 1 DEG C/min after 15 ~ 25 minutes in described dye liquor;

(4), when the temperature of the described dye liquor of pH value between 8-9 is elevated to 90 ~ 95 DEG C, continue 10 ~ 15 minutes to end of dyeing, after then the steam pressure in described dye vat being down to normal pressure, discharge the dye liquor in described dye vat;

(5), at ambient pressure, again add soaping agent toward water filling in described dye vat, bath raio is 1: 10 ~ 12, start to soap and be rapidly heated to 85 ~ 95 DEG C, discharges the tail washings in described dye vat after continuing 15 ~ 25 minutes soap.