CN104631089B - Low-temperature bleaching method of cotton-wool blended yarn - Google Patents
Low-temperature bleaching method of cotton-wool blended yarn Download PDFInfo
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- CN104631089B CN104631089B CN201510061045.4A CN201510061045A CN104631089B CN 104631089 B CN104631089 B CN 104631089B CN 201510061045 A CN201510061045 A CN 201510061045A CN 104631089 B CN104631089 B CN 104631089B
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Abstract
The invention provides a low-temperature bleaching method of a cotton-wool blended yarn. The bleaching method comprises the following steps: firstly, carrying out pretreatment of ferric sulfate and laccase mixed liquid on the cotton-wool blended yarn; washing and then adding the cotton-wool blended yarn and a low-temperature bleaching liquid to a dyeing vessel; and carrying out heat preservation, taking out the cotton-wool blended yarn, washing with hot water and cold water and drying. According to the low-temperature bleaching method, the problems of excessive energy consumption in the bleaching process of the cotton-wool blended yarn and relatively large damages to wool under an alkaline condition are solved; the cotton-wool blended yarn is subjected to pretreatment by virtue of a compound treating liquid of ferric sulfate and laccase, and then is activated and bleached at low temperature; and the obtained cotton-wool blended yarn is high in whiteness, small in damages and simple to operate.
Description
Technical field
The present invention relates to textile low temperature pre-treatment field, particularly relate to a kind of llama yarn cold bleaching method.
Background technology
Llama yarn had both had the hygroscopicity of bafta, snugness of fit, had again bulky hand laniferous, excellent
Resilience, be the fabric fabric having very much quality.But bafta belongs to cellulose fibre, it is fine that Pilus Caprae seu Ovis belongs to protein
Dimension, the two difference on chemical property and morphosis is bigger.Therefore, for the pre-treatment of cotton wool yarn, it is necessary to simultaneously
Consider the character of two kinds of fibers, use comparatively gentle bleaching method, and reduce the damage that Pretreatment of textile brings to yarn.
Through the retrieval of applicant, Application No. 201110085229.6 (publication date is on 09 28th, 2011) discloses
A kind of cotton/wool blend yarn pre-treatment working solution and cotton/wool blend yarn pre-treating technology.Working solution is by H2O2, scouring agent, work
Agent, bleach boosters and water composition.The mixture of preferred anionic surfactant and nonionic surfactant is as essence
Practicing agent, tetraacetyl ethylene diamine or pelargonyl group benzene sulfonic acid sodium salt are activator, and perborate, percarbonate are bleach boosters.This
Bright additionally provide a kind of technique using this working solution that cotton/wool blend yarn is carried out pre-treatment.This invention can realize cotton/hair and mix
The low temperature one-bath pretreatment of yarn, shortens technological process, decreases fibre damage, is conducive to saving the energy simultaneously.But
In this invention, tetraacetyl ethylene diamine or pelargonyl group benzene sulfonic acid sodium salt are expensive, and place's process bleaching temperature need nonetheless remain for entering at 80 DEG C
OK.
Summary of the invention
Brief overview about the present invention given below, in order to the basic reason about certain aspects of the invention is provided
Solve.Should be appreciated that this general introduction is not that the exhaustive about the present invention is summarized.It is not intended to determine the key of the present invention
Or pith, nor is it intended to limit the scope of the present invention.Its purpose is only to provide some concept in simplified form, with
This is as the preamble in greater detail discussed after a while.
The present invention provides a kind of llama yarn cold bleaching method, and described llama yarn cold bleaching method walks
Rapid as follows:
Step one, carries out iron sulfate and laccase mixed liquor pretreatment by llama yarn, washing；
Step 2, adds dye vat, insulation by llama yarn and bleaching liquid.
Step 3, takes out llama yarn, hot water wash, and cold water is washed, and dries.
In described step one, the concentration of iron sulfate is 0.1-2g/L.
In described step one, the concentration of laccase is 0.2-1g/L.
In described step 2, bleaching liquid is the component of following weight concentration:
30% hydrogen peroxide 8g/L,
Acetamide 2-6g/L,
Scouring agent 2g/L,
Penetrating agent 1g/L,
Sodium carbonate 3g/L,
Stabilizer 1g/L.
In described step one, the temperature of pretreatment is 30-50 DEG C.
In described step one, the time of pretreatment is 30-60 minute.
In described step 2, the bath raio of bleaching is 1:5-1:10.
In described step 2, the holding temperature of dye vat is 60-80 DEG C.
In described step 2, the temperature retention time of dye vat is 40-60 minute.
Compared with prior art, the present invention has a following beneficial effect:
It is too much that the present invention solves llama yarn bleaching process energy resource consumption, and alkalescence condition is bigger to wool damage
Problem, use iron sulfate and laccase complex treatment liquid that llama yarn carries out pretreatment, then carry out low-temperature activation drift
In vain, it is thus achieved that llama yarn whiteness high, damage little, simple to operate.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below will be in the embodiment of the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment be a part of embodiment of the present invention rather than
Whole embodiments.The element described in one embodiment of the invention and feature can be with one or more embodiment party
The element and the feature that demonstrate in formula combine.It should be noted that, for purposes of clarity, explanation eliminate unrelated to the invention
, parts known to persons of ordinary skill in the art and the expression of process and description.Based on the embodiment in the present invention, this area
The every other embodiment that those of ordinary skill is obtained on the premise of not paying creative work, broadly falls into the present invention and protects
The scope protected.
Embodiment 1
(1) 48S llama (85/15) yarn
(2) pretreatment fluid consists of
Iron sulfate 0.2g/L,
Laccase 0.1g/L.
Preprocessing process is, adds in pretreatment fluid by llama yarn according to the bath raio of 1:8, and 40 DEG C process 30min,
Fully washing.
(3) bleaching liquid includes each component of following parts by weight:
30% hydrogen peroxide 8g/L,
Acetamide 2g/L,
Scouring agent 2g/L,
Penetrating agent 1g/L,
Sodium carbonate 3g/L,
Stabilizer 1g/L.
The low temperature process of scouringing and bleaching is, will add dye vat through the llama yarn of pretreatment and bleaching liquid, bath raio 1:10,70
DEG C bleaching 50min, take out llama yarn, washing, dry.
Embodiment 2
(1) 48S llama (85/15) yarn
(2) pretreatment fluid consists of
Iron sulfate 2g/L,
Laccase 1g/L.
Preprocessing process is, by llama yarn, adds in pretreatment fluid according to the bath raio of 1:8,40 DEG C of process
30min, fully washes.
(3) bleaching liquid includes each component of following parts by weight:
30% hydrogen peroxide 8g/L,
Acetamide 6g/L,
Scouring agent 2g/L,
Penetrating agent 1g/L,
Sodium carbonate 3g/L,
Stabilizer 1g/L.
The low temperature process of scouringing and bleaching is, will add dye vat through the llama yarn of pretreatment and bleaching liquid, bath raio 1:10,70
DEG C bleaching 50min, take out llama yarn, washing, dry.
Embodiment 3
(1) 48S llama (85/15) yarn
(2) pretreatment fluid consists of
Iron sulfate 1g/L,
Laccase 0.5g/L.
Preprocessing process is, by llama yarn, adds in pretreatment fluid according to the bath raio of 1:8,40 DEG C of process
30min, fully washes.
(3) bleaching liquid includes each component of following parts by weight:
30% hydrogen peroxide 8g/L,
Acetamide 4g/L,
Scouring agent 2g/L,
Penetrating agent 1g/L,
Sodium carbonate 3g/L,
Stabilizer 1g/L.
The low temperature process of scouringing and bleaching is, will add dye vat through the llama yarn of pretreatment and bleaching liquid, bath raio 1:10,70
DEG C bleaching 50min, take out llama yarn, washing, dry.
Embodiment 4
(1) 48S llama (85/15) yarn
(2) pretreatment fluid consists of
Iron sulfate 1g/L,
Laccase 0.5g/L.
Preprocessing process is, by llama yarn, adds in pretreatment fluid according to the bath raio of 1:8,40 DEG C of process
30min, fully washes.
(3) bleaching liquid includes each component of following parts by weight:
30% hydrogen peroxide 8g/L,
Acetamide 6g/L,
Scouring agent 2g/L,
Penetrating agent 1g/L,
Sodium carbonate 3g/L,
Stabilizer 1g/L.
The low temperature process of scouringing and bleaching is, will add dye vat through the llama yarn of pretreatment and bleaching liquid, bath raio 1:10,70
DEG C bleaching 50min, take out llama yarn, washing, dry.
Comparative example 1
(1) 48S llama (85/15) yarn
(2) bleaching liquid includes each component of following parts by weight:
30% hydrogen peroxide 10g/L,
Scouring agent 2g/L,
Penetrating agent 1g/L,
Stabilizer 1g/L,
Caustic soda 2g/L.
The process of scouringing and bleaching is, llama yarn and bleaching liquid adds dye vat, bath raio 1:10,95 DEG C of bleaching 50min, takes out
Llama yarn, washing, dry.
Result of implementation
Table 1 comparative example and embodiment test result
From table 1 it follows that after using the method for the present invention that llama yarn is carried out cold bleaching, fabric white
Degree is higher than the whiteness without pretreatment, has beyond thought implementation result.Wherein, bleaching at 70 DEG C in 2 is implemented
Result is than taller 3.5 points of whiteness of 95 DEG C of bleachings in comparative example 1, it is shown that extraordinary treatment effect.This is because
After being processed on cotton wool fabric by iron sulfate, iron ion can carry out complexation with pigment in Pilus Caprae seu Ovis, then floats at follow-up hydrogen peroxide
Time white, hydrogen peroxide and iron ion can generate the free radical that oxidability is the strongest near wool, entered by the pigment in Pilus Caprae seu Ovis
Row decolouring, when using laccase pretreatment, the pigment on bafta can be aoxidized by laccase, forms the dimer of pigment, this
Dimer is more oxidized than individual molecule is more easy to, and then can bleach bafta at low temperatures at back bleaching process.
Can further find out from table 1, after pretreatment adds cold bleaching technique, the strength loss comparison ratio of cotton wool yarn
Example 1 is low, this is because, during high temperature, protein fibre is easily subject to destroy in the basic conditions, then makes whole yarn strong
Power step-down, and after reducing bleaching temperature, the condition milder of process, and when using sodium carbonate as alkaline agent, to protein fibre
Destructiveness less.
It can also be seen that after using the inventive method to carry out cotton wool yarn bleaching, in yarn, the content of Pilus Caprae seu Ovis is equal from table 1
Decreasing, in raw yarn, the content of Pilus Caprae seu Ovis is 15.2%, and after using the inventive method, it is 0.8% that wool content reduces maximum,
And using the reduction rate after the bleaching of regular oxidation method to reach 1.3%, the damage to Pilus Caprae seu Ovis is relatively big, so the present invention has preferably
Practicality.
Although it is last it is noted that the present invention and advantage thereof have been described in detail above it should be appreciated that not
Beyond can carry out in the case of the spirit and scope of the present invention that are defined by the claims appended hereto various change, replacement and
Conversion.And, the scope of the present invention is not limited only to the concrete reality of the process described by description, equipment, means, method and steps
Execute example.One of ordinary skilled in the art will readily appreciate that from the disclosure, can use according to the present invention and hold
The row function essentially identical to corresponding embodiment described herein or obtain the result essentially identical with it, existing and future
Process, equipment, means, method or step to be developed.Therefore, appended claim is directed in the range of them wrapping
Include such process, equipment, means, method or step.
Claims (6)
1. a llama yarn cold bleaching method, it is characterised in that described llama yarn cold bleaching method walks
Rapid as follows:
Step one, carries out iron sulfate and laccase mixed liquor pretreatment by llama yarn, and washing, the concentration of described iron sulfate is
0.1-2g/L, the concentration of described laccase is 0.2-1g/L；
Step 2, adds dye vat, insulation by llama yarn and bleaching liquid；Described bleaching liquid is the group of following weight concentration
Point:
30% hydrogen peroxide 8g/L,
Acetamide 2-6g/L,
Scouring agent 2g/L,
Penetrating agent 1g/L,
Sodium carbonate 3g/L,
Stabilizer 1g/L；
Step 3, takes out llama yarn, hot water wash, and cold water is washed, and dries.
A kind of llama yarn cold bleaching method the most according to claim 1, it is characterised in that in described step one
The temperature of pretreatment is 30-50 DEG C.
A kind of llama yarn cold bleaching method the most according to claim 1, it is characterised in that in described step one
The time of pretreatment is 30-60 minute.
A kind of llama yarn cold bleaching method the most according to claim 1, it is characterised in that in described step 2
The bath raio of bleaching is 1:5-1:10.
A kind of llama yarn cold bleaching method the most according to claim 1, it is characterised in that in described step 2
The holding temperature of dye vat is 60-80 DEG C.
A kind of llama yarn cold bleaching method the most according to claim 1, it is characterised in that in described step 2
The temperature retention time of dye vat is 40-60 minute.
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| CN108570849A (en) * | 2018-04-03 | 2018-09-25 | 南通大学 | A kind of novel bleached hair method |
| CN110820310A (en) * | 2019-10-15 | 2020-02-21 | 江阴市长泾花园毛纺织有限公司 | Bleaching treatment process of full-wool fabric |
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| MX2011006779A (en) * | 2008-12-24 | 2011-08-03 | Danisco Us Inc | Laccases and methods of use thereof at low temperature. |
| US8778136B2 (en) * | 2009-05-28 | 2014-07-15 | Gp Cellulose Gmbh | Modified cellulose from chemical kraft fiber and methods of making and using the same |
| CN102168381A (en) * | 2011-02-25 | 2011-08-31 | 东华大学 | Method for pretreating cotton fabric by using biological enzyme/mediator system and bleaching cotton fabric by using hydrogen peroxide |
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