CN101914848A - Pre-treatment auxiliary agent for cotton knitted fabrics, preparation method and application thereof - Google Patents
Pre-treatment auxiliary agent for cotton knitted fabrics, preparation method and application thereof Download PDFInfo
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- CN101914848A CN101914848A CN2010102550169A CN201010255016A CN101914848A CN 101914848 A CN101914848 A CN 101914848A CN 2010102550169 A CN2010102550169 A CN 2010102550169A CN 201010255016 A CN201010255016 A CN 201010255016A CN 101914848 A CN101914848 A CN 101914848A
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Abstract
The invention discloses a pre-treatment auxiliary agent for cotton knitted fabrics, a preparation method and application thereof, belonging to the technical field of pre-treatment process formulas of the cotton knitted fabric dyeing and finishing industry. The auxiliary agent comprises the following components in percentage by weight: 40-65 percent of alkali agent, 5-10 percent of tea saponin, 0.3-3 percent of hydrogen peroxide stabilizer SOF, 1-10 percent of wetting penetrating agent, 2-5 percent of hydrogen peroxide activating agent and 20-40 percent of anhydrous sodium sulphate. By applying the auxiliary agent, the whiteness and capillary standards of the traditional process can be achieved only by using the auxiliary agent with hydrogen peroxide. The invention has the advantages of simple operation, low production cost, good environmental protection, and the like.
Description
Technical field:
The present invention relates to a kind of pre-treatment auxiliary agent for cotton knitted fabrics, preparation method and application thereof, belong to the pre-treatment process formula technique field of cotton fabrics dyeing and finishing industry.
Background technology:
The color and luster of natural cotton fabric is yellow, water imbibition is also poor, but chemical constitution from cotton fiber, but should be have well absorptive, the main cause that produces this contradiction be since in the fiber except containing 90% cellulose, also contain 10% the natural impurity (also claiming the cellulose commensal) of having an appointment.These natural impurity mainly contain pectin substance, protein, waxy substance, natural colouring matter etc., in addition, also can carry a small amount of cotton seed hulls fragment secretly when stripping cotton fiber.These natural impurity have had a strong impact on the good wearability of cotton fabrics.
In order to remove the impurity in these cotton fibers, improve the water absorbing properties of COTTON FABRIC, satisfy people's wearability, need carry out pre-treatment (kiering and bleaching) to COTTON FABRIC.Traditional cotton fabrics pre-treatment all is with alkali oxygen boiling, bleaching-bathing method, with hydrolytic reagent and the saponification agent of NaOH as nitrogen substance, pectin grease wax, also be the swelling agent of cotton seed hulls simultaneously, again in order to surfactant, sodium metasilicate and sodium sulfite be the scouring agent of major ingredient with analyte emulsification, dispersion and washing, and remove from cotton fiber; With the hydrogen peroxide is the major ingredient of bleaching, and the stabilizing agent that adds hydrogen peroxide again comes COTTON FABRIC is bleached.Above technology uses chemical kind more, give in the practical operation and brought inconvenience, and disadvantages such as raffinate alkalescence big (pH＞11), colourity are dark, biodegradable difference have become the pollution sources of dyeing maximum, and work in-process is very big to the strength damage of cotton fiber simultaneously.
Biology enzyme is concise to be comparatively novel a kind of method.Because enzyme has selectivity, the high efficiency of height, so need use when COTTON FABRIC carried out pre-treatment plurality of enzymes can remove various impurity on the COTTON FABRIC simultaneously.Fabric also need be bleached processing in addition.The condition that biology enzyme is handled COTTON FABRIC is gentle, and the pH value is neutral, and is lighter to the pollution of environment, but manufacturing procedure is long, and the kind of the biology enzyme of usefulness is many, so brought inconvenience to actual production.
Based on the above-mentioned defective that prior art exists, make the present invention.
Summary of the invention:
The technical problem of solution required for the present invention is to provide a kind of auxiliary agent at cotton fabrics boiling, bleaching-bathing method, this auxiliary agent and hydrogen peroxide use simultaneously has good kiering and discoloration, in to cotton fabrics boiling, bleaching-bathing method technology, it is few, simple to operate to use auxiliary dosage of the present invention, handle the raffinate alkalescence of discharging behind the cotton fabrics little (pH value＜10) together with this auxiliary agent and hydrogen peroxide, little to the knitting strength damage of cotton.
To achieve the above object, a first aspect of the present invention provides a kind of pre-treatment auxiliary agent for cotton knitted fabrics, comprises following composition by weight percentage:
Alkaline agent 40-65%
Tea Saponin 5-10%
Hydrogen peroxide stabilizer SOF 0.3-3%
Wetting and penetrating agent 1-10%
Hydrogen peroxide activator 2-5%
Glauber salt 20-40%.
In the above-mentioned prescription:
Described alkaline agent is sylvite and the sodium salt in the strong base weak acid salt.As any one of sodium carbonate, sodium bicarbonate, dibastic sodium phosphate, potash, sodium metasilicate etc., and two or more mixture arbitrarily, be preferably sodium carbonate and sodium metasilicate weight ratio and be 1: 4～6 mixture.The additional proportion of alkaline agent is excellent with 55～70%.
Tea Saponin described in the prescription is the pentacyclic triterpenoid (being commonly called as saponin) that extracts by in the tea cake after tealeaves seed, the tea seed oil expression, and Tea Saponin preferably adopts the Tea Saponin of saponin content more than 95%; Because to the cellulose fibre not damaged, what use in prescription is more weak alkali to saponin to pure natural substance, the adding of Tea Saponin can impel weak base that chemical reaction is at high temperature taken place for the ester bond of pectin substance in the fiber to generate carboxyl and become soluble sodium salt; Saponin also can be strengthened the removal of weak base to nitrogen substance in the COTTON FABRIC simultaneously, is that the amido link hydrolysis becomes amino acid whose sodium salt; Characteristics such as saponin also has certain emulsification, and this material has that foam is low, diffusion is fast, easy cleaning, performance are fast, environmental pollution is little.In sum, the adding of Tea Saponin not only has very big synergy to the impurity in the COTTON FABRIC of weak base place to go, also need not add defoamer simultaneously in cotton pretreatment.The additional proportion of Tea Saponin is excellent with 6～9%.
The SOF of hydrogen peroxide stabilizer described in the prescription is provided by Clariant Co., Ltd, and main component is inorganic matter and organic mixture, can be dissolved in cold water with any ratio, and is good with compatibilities such as alkali, bleeding agents, still.Hydrogen peroxide stabilizer can effectively be controlled the catalytic decomposition of hydrogen peroxide in temperature, pH value, heavy metal ion in the cotton fabrics bleaching, can avoid the strength damage of hydrogen peroxide to cellulose fibre, can also complexation heavy metal ion, simultaneously in the hydrogen peroxide bleaching process, avoid producing the silicon dirt, prevent oxidation catalysis.Hydrogen peroxide stabilizer SOF additional proportion is excellent with 1.5～3%,
Wetting and penetrating agent described in the prescription is anion and non-ionic surface active agent, can be selected from the laurilsulfate sodium salt, sodium butylnaphthalenesulfonate, isooctanol polyoxydivinyl ether phosphate, any one of low carbon fat alcohol ethylene oxide condensate etc., two or more.Adding wetting and penetrating agent is further to increase the removal of alkali to pectin substance, protein, waxy substance in the fabric, has also increased the decontamination activity of Tea Saponin to fabric simultaneously.The wetting and penetrating agent additional proportion is excellent with 4-6%.
Hydrogen peroxide activator described in the prescription is tetraacetyl ethylene diamine (TAED), and is for Powdered, soluble in water.The peracetic acid series products is produced in tetraacetyl ethylene diamine and hydrogen peroxide reaction, and peracetic acid class oxidation bleaching energy force rate hydrogen peroxide height has quickened bleaching.And in the presence of the hydrogen peroxide activator, hydrogen peroxide just can be realized effective decomposition under the more weak condition of alkalescence.Thereby reach effect to the COTTON FABRIC bleaching.Hydrogen peroxide activator additional proportion is excellent with 3-4.5%,
Another aspect of the present invention provides a kind of preparation method of above-mentioned pre-treatment auxiliary agent for cotton knitted fabrics, may further comprise the steps: in reactor, add alkali, Tea Saponin, hydrogen peroxide activator and glauber salt successively, slowly add hydrogen peroxide stabilizer, wetting and penetrating agent after stirring, at room temperature stir 50-80min and get product.
More excellent is at room temperature to mix to stir 60 minutes, and finished product is a solid.
The present invention also provides a kind of above-mentioned pre-treatment auxiliary agent for cotton knitted fabrics in the technologic application of cotton fabrics boiling, bleaching-bathing, only needs to add this auxiliary agent and hydrogen peroxide and just can reach the kiering and the bleaching of cotton fabrics fully in the pre-treatment of cotton fabrics.
The present invention compares with prior art (traditional pre-treatment auxiliary agent), has following remarkable result:
1, uses auxiliary agent of the present invention, only use simultaneously, just can reach whiteness, the gross efficiency standard of traditional handicraft with hydrogen peroxide.
2, use this auxiliary agent simple to operate, avoided the cloth specimen that causes because of misoperation defective.Boiling at cotton fabrics only needs to add this auxiliary agent and hydrogen peroxide in floating, and in traditional technology, need to add more auxiliary agent as caustic soda, hydrogen peroxide, bleeding agent, hydrogen peroxide stabilizer etc., add or add less the same auxiliary agent and will cause defective if in practical operation, leak.
3, to add the pH value of auxiliary agent of the present invention and its solution of hydrogen peroxide in the single bath process boiling and bleaching process be about 10 to cotton fabrics, and the pH of traditional pre-treatment solution is more than 11, the pH value that at first shows pre-treatment solution is little, its strength damage to cotton fabrics is just little: secondly the COD value of pre-treatment raffinate sewage is low, pollution to environment is little, has alleviated the pressure of sewage disposal.
4, use this auxiliary agent, production cost does not increase, and in sewage disposal, has saved the part expense of disposing of sewage, so overall cost reduces.
5, auxiliary agent of the present invention belongs to the environmental protection auxiliary agent, does not contain the material of harmful environmental protection such as APEO, formaldehyde, heavy metal.
6, auxiliary agent of the present invention is a formulation auxiliary agent, and a kind of auxiliary agent replaces auxiliary agent, conveniently processing more than four kinds such as caustic soda, hydrogen peroxide bleaching stabilizer, scouring agent, chelating agent in the processing.
Specific implementation method
Below in conjunction with specific embodiment the present invention is described in further detail, but the present invention not only is confined to following examples.
Embodiment 1, pre-treatment auxiliary agent for cotton knitted fabrics prescription:
A kind of cotton fabrics pre-treatment auxiliary agent comprises following raw materials by weight percent and forms:
Alkali 40-65%
Tea Saponin 5-10%
Hydrogen peroxide stabilizer 0.3-3%
Wetting and penetrating agent 1-10%
Hydrogen peroxide activator 2-5%
Glauber salt 20-40%
According to above-mentioned prescription of the present invention, the preparation specific embodiment is as shown in table 1.
Table 1: different each pre-treatment auxiliary agent for cotton knitted fabrics list of forming
Table 1 remarks:
Alkaline agent in the scheme 1 is a sodium silicate, and wetting and penetrating agent is the non-ionic surface active agent XP-70 of BASF
Alkaline agent in the scheme 2 is that the mixture ratio of sodium carbonate and sodium metasilicate is 2: 1; Wetting and penetrating agent is a sodium butylnaphthalenesulfonate
Alkaline agent in the scheme 3 is that the mixture ratio of potash and sodium metasilicate is 2: 1, and wetting and penetrating agent is the laurilsulfate sodium salt
Alkaline agent in scheme 4, the scheme 5 is and sodium bicarbonate that wetting and penetrating agent is the surfactant JFC that spins chemical industry in the Shaoxing
The alkaline agent sodium bicarbonate in scheme 6, scheme 7, the scheme 8 and the mixed proportion of sodium metasilicate are 1: 2.Wetting and penetrating agent is an isooctanol polyoxydivinyl ether phosphate
The preparation of embodiment 2, pre-treatment auxiliary agent for cotton knitted fabrics:
Add alkaline agent, Tea Saponin, hydrogen peroxide activator, glauber salt in reactor successively, the back that stirs slowly adds hydrogen peroxide stabilizer, wetting and penetrating agent, at room temperature mixes and stirs 60 minutes, promptly gets solid finished product.
Embodiment 3, pre-treatment auxiliary agent for cotton knitted fabrics are in the technologic application of cotton fabrics boiling, bleaching-bathing:
Adopt traditional pre-treatment auxiliary agent to be contrast, that 64 all cotton undershirt cloths, 32 cotton spandex single jerseys, 21 all cotton undershirt cloths are carried out the boiling, bleaching-bathing PROCESS FOR TREATMENT is as shown in table 2 with pre-treatment auxiliary agent for cotton knitted fabrics of the present invention respectively, and the contrast result is shown in table 3～5.
Table 2, the traditional pre-treatment auxiliary agent of employing and auxiliary agent of the present invention carry out boiling, bleaching-bathing technology table
Table 2 remarks: what 64 all cotton undershirt cloth boiling and bleaching process were used is auxiliary agent that the present invention program 4 joins;
What 32 cotton spandex single jersey boiling and bleaching process were used is auxiliary agent that the present invention program 6 joins;
What 21 all cotton undershirt cloth boiling and bleaching process were used is auxiliary agent that the present invention program 8 joins;
More than the cloth weight average of used cloth specimen be 2000g.
Table 3,64 all cotton undershirt cloths boil and float effect relatively
| Capillary effect | Whiteness | Bursting strength | Strength loss | Raffinate pH value | |
| Traditional handicraft | 11.2 | 85 | 206 | 17.6％ | 12.2 |
| Boiling and bleaching process of the present invention | 11 | 83 | 228 | 8.8％ | 9.5 |
Table 4,32 cotton spandex single jerseys boil and float effect relatively
| Capillary effect | Whiteness | Bursting strength | Strength loss | Raffinate pH value |
| Traditional handicraft | 11.5 | 86 | 264 | 12％ | 11.8 |
| Boiling and bleaching process of the present invention | 12 | 85 | 288 | 4％ | 9.1 |
Table 5,21 all cotton undershirt cloths boil and float effect relatively
| Capillary effect | Whiteness | Bursting strength | Strength loss | Raffinate pH value | |
| Traditional handicraft | 11.5 | 86 | 492 | 10.5％ | 11.8 |
| Boiling and bleaching process of the present invention | 12.5 | 88 | 534 | 3％ | 8.8 |
Table 3～5 remarks:
(1) capillary effect: measure unit according to the FZ/T01071 standard: cm/30min.;
(2) whiteness: measure according to the GB/T8424.2-2001 standard;
(3) bursting strength: measure instrument according to the GB/T14800-93 standard: YG (B) the 031T type tensometer that Daiei Instr Ltd. in Wenzhou produces.Unit: newton.
Strength damage percentage % boils to float the powerful difference in front and back and the percentage of embryo cloth brute force.
The brute force of testing used 64 all cotton undershirt cloth embryo cloth is 250 newton, and the brute force of 32 cotton spandex single jersey embryo cloth is 300 newton, and 21 all cotton undershirt cloth embryo cloth brute forces are 550 newton.
(4) the pH value of raffinate is measured with pH meter behind the boiling and bleaching process.Instrument: the big general Instr Ltd. in Shanghai produces;
(5) test data in the form is the mean value of 5 tests.
Interpretation of result: associative list 3～5 adopts pre-treatment auxiliary agent of the present invention as can be seen, is applied to compare with traditional pre-treatment auxiliary agent in the boiling, bleaching-bathing technology of cotton fabrics, has following obvious raising:
1, in the boiling, bleaching-bathing technological operation, do not need repeatedly to feed intake, convenient in practical operation, succinct;
2, auxiliary agent of the present invention is applied in the pH value of boiling bleaching liquor in the pre-treatment little (promptly alkalescence is little), and it is also very little to the damage of cotton fabrics to use this auxiliary agent;
3, auxiliary agent of the present invention is applied in the pre-treatment, can reach the index request of conventional pre-treatment fabric.
Claims (10)
1. a pre-treatment auxiliary agent for cotton knitted fabrics is characterized in that, comprises following composition by weight percentage:
Alkaline agent 40-65%
Tea Saponin 5-10%
Hydrogen peroxide stabilizer SOF 0.3-3%
Wetting and penetrating agent 1-10%
Hydrogen peroxide activator 2-5%
Glauber salt 20-40%.
2. a kind of pre-treatment auxiliary agent for cotton knitted fabrics according to claim 1 is characterized in that: described alkaline agent is sylvite and the sodium salt in the strong base-weak acid salt, and the additional proportion of alkaline agent is 55～70%.
3. a kind of pre-treatment auxiliary agent for cotton knitted fabrics according to claim 2 is characterized in that: described alkaline agent is selected from any one of sodium carbonate, sodium bicarbonate, dibastic sodium phosphate, potash, sodium metasilicate, two or more mixture arbitrarily.
4. a kind of pre-treatment auxiliary agent for cotton knitted fabrics according to claim 3 is characterized in that: described alkaline agent is that sodium carbonate and sodium metasilicate weight ratio are 1: 4～6 mixture.
5. a kind of pre-treatment auxiliary agent for cotton knitted fabrics according to claim 1 is characterized in that: described Tea Saponin adopts the Tea Saponin of saponin content more than 95%; Additional proportion is 6～9%.
6. a kind of pre-treatment auxiliary agent for cotton knitted fabrics according to claim 1 is characterized in that: hydrogen peroxide stabilizer SOF additional proportion is 1.5～3%.
7. a kind of pre-treatment auxiliary agent for cotton knitted fabrics according to claim 1, it is characterized in that: described wetting and penetrating agent is selected from the laurilsulfate sodium salt, sodium butylnaphthalenesulfonate, isooctanol polyoxydivinyl ether phosphate, any one of low carbon fat alcohol ethylene oxide condensate, two or more, additional proportion is 4-6%.
8. a kind of pre-treatment auxiliary agent for cotton knitted fabrics according to claim 1 is characterized in that: described hydrogen peroxide activator is a tetraacetyl ethylene diamine, and additional proportion is 3-4.5%.
9. the preparation method of a pre-treatment auxiliary agent for cotton knitted fabrics, may further comprise the steps: in reactor, add alkali, Tea Saponin, hydrogen peroxide activator and glauber salt successively, slowly add hydrogen peroxide stabilizer, wetting and penetrating agent after stirring, at room temperature stir 50-80min and get product.
10. the described pre-treatment auxiliary agent for cotton knitted fabrics of claim 1～9 adds kiering and bleaching that this auxiliary agent and hydrogen peroxide are realized cotton fabrics in the technologic application of cotton fabrics boiling, bleaching-bathing in the pre-treatment of cotton fabrics.
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