CN100439573C - Stabilizer for use in sodium chlorite degumming and bleaching of flax and its preparation method and application - Google Patents
Stabilizer for use in sodium chlorite degumming and bleaching of flax and its preparation method and application Download PDFInfo
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- CN100439573C CN100439573C CNB2005101241082A CN200510124108A CN100439573C CN 100439573 C CN100439573 C CN 100439573C CN B2005101241082 A CNB2005101241082 A CN B2005101241082A CN 200510124108 A CN200510124108 A CN 200510124108A CN 100439573 C CN100439573 C CN 100439573C
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Abstract
The invention relates to a stabilizer for sodium chlorite degumming and bleaching of linen rove and the textile and the new technology of degumming and bleaching for green environment protection. The stabilizer is a saturated solution of salt mixture, which comprises 3-13% by wt of six methylene amine, 1-6% by wt of diamine sulfate, 2-10% by wt of triethanolamine, 1-8% by wt of ammonium persulfate and water. In the process of degumming and bleaching, the stabilizer is joined to restrain generation and dissipation of chlorine dioxide so that not only bleaching conditions are satisfied and the quality of yarn is improved but also the health of operating workers is protected and the equipment is maintained. It is no-pollution so as to decrease the consumption of sodium chlorite and improve the utilization ratio of sodium chlorite is improved. The degumming and bleaching technology for linen rove can improve yarn evenness evidently, decrease hemp particle greatly, and improve the spinning number and the loom efficiency greatly. Especially it is provided with notable effect for primary color yarn with difficult spinning performance.
Description
Technical field
The present invention relates to the stabilizing agent of sodium chlorite degumming and bleaching of flax roving and fabric thereof and the degumming and bleaching new technology of environmental protection thereof.
Background technology
The technology of flax roving and fabric degumming and bleaching thereof is pickling → chlorite bleaching → washing, in the process of sodium chlorite degumming and bleaching, adds this stabilizing agent, can suppress chlorine dioxide (clo
2) generation, reduce the pollution of environment, reach the purpose of sodolin degumming and bleaching.
Flax is one of textile raw material, and sodolin has the moisture absorption rapid heat dissipation, good permeability, and the texture nature, tone is soft, and the well-pressed generous individual style that waits is widely used in fields such as clothes, dress ornament, quite is subjected to liking of consumer.Linen fibre is made up of cellulose, hemicellulose, pectin, lignin, wax, nitrogen substance etc., and wherein the content of non-cellulose composition accounts for about 30%.The flax roving that at present domestic and international linen textile industry is adopted and the chemical processing technology of fabric thereof all are that fundamental property, processing technology and the line of production of the own national flax raw material of basis disposes.Mainly contain " the dioxygen bleaching process " in Europe, " the inferior oxygen bleaching process " of Muscovite " Double Drift of oxygen and chlorine technology " and China.
Oxygen bleaching process temperature height, operated by rotary motion is at 100～105 ℃; Pressure is big, and oxygen bleaching process pressure is more than 3.5Mpa; The alkali concn height is generally more than 10g/L.Sodium chlorite is a kind of comparatively gentle oxidant, and nineteen thirty-nine just begins to occur as the textile fabric bleaching agent, after World War II, owing to close fine development, just obtains using more widely.Sodium chlorite can not damage fiber under normal conditions of bleaching, can be used for cotton, close the bleaching of fibre and BLENDED FABRIC thereof, but be not suitable for the bleaching of wool or other protein fibre.Compare with clorox, hydrogen peroxide, sodium chlorite impurity elimination efficient height, it is the redox lignin both, do not damage cellulose again, bleaching time is short, the fabric weight-loss ratio is little, floats soft, the good springiness in back, whiteness is high and bright, durable and not yellowing, advantage such as distortion is little, energy consumption is low, adapted breed is wide, floor space is little.But sodium chlorite can produce the poisonous chlorine dioxide very strong with corrosivity in bleaching process, the material of machinery equipment and labour protection require very high, thereby are very limited.
In the flax chemical process field abroad, generally adopt hydrogen peroxide bleaching, forbid to use chlorite bleaching, its main cause is that sodium chlorite belongs to hypertoxic chemicals, and is seriously polluted, is difficult to administer, in addition the processing cost height.China does not cancel the suitable reason of sodium chlorite: homemade linen fibre brute force is low, complex chemical composition, and through simple hydrogen peroxide bleaching, the impurity in the fiber is difficult to remove, and the fiber strength loss seriously can not reach the quality requirement of product.The traditional degumming and bleaching technology of China is pickling → chlorite bleaching → washing → hydrogen peroxide bleaching → washing.Wherein, the flow process of pickling is: roll acid (sulfuric acid 5～15g/L, room temperature) → bank up (room temperature, 15～30 minutes) → washing; The technology of chlorite bleaching: sodium chlorite consumption 10～30g/L, pH=4.0～4.5, activator acetic acid 1～10g/L, 80～102 ℃ of temperature, steaming time 0.5～1 hour.The technology of hydrogen peroxide bleaching is: hydrogen peroxide 1～10g/L, sodium metasilicate 5～10g/L, pH=9.0～11.5,98～102 ℃ of temperature, steaming time 0.5～1 hour.This technological process disadvantage is big, is that acidity is floated because float the Asia, and it then is that high-temperature alkaline floats that oxygen floats.The pH value of twice bleaching differs 5.00 more than the unit, and therefore, washing is difficult to clean in the middle of twice bleaching, and the rate of weight loss of fiber is higher in the whole degumming and bleaching technology, and the fibre whiteness irregularity behind the degumming and bleaching is big, and aberration is serious.Therefore with this kind technology degumming and bleaching, the time is long, and complex procedures is polluted greatly the cost height.
In the process of using chlorite bleaching; in the sodium chlorite decomposable process; how to control and just make effective chlorine play one's part to the full and cut the waste and air pollution is flax industry a great problem always; at this problem; the inventor has invented a kind of stabilizing agent of sodium chlorite degumming and bleaching; in the process of degumming and bleaching; add this stabilizing agent; can effectively suppress generation, the loss of chlorine dioxide; make it to satisfy bleaching conditions; improve yarn quality, help protecting operator's health and maintenance facility again.Pollution-free, can reduce the consumption of sodium chlorite, improve the utilization rate of sodium chlorite, the degumming and bleaching technology that is used for flax roving can also obviously be improved yarn evenness, significantly reduces numb particle, improve limit count, loom efficiency increases substantially, the raw yarn that spins for difficulty especially, and effect is more remarkable.
Summary of the invention
A purpose of the present invention is the complexity that overcomes existing inferior oxygen bleaching process, and operation is long, and heavy-polluted deficiency provides a kind of stabilizing agent that is used for sodium chlorite degumming and bleaching of flax.
Another object of the present invention provides a kind of preparation method who is used for the stabilizing agent of sodium chlorite degumming and bleaching of flax.
Still a further object of the present invention provides the purposes of the stabilizing agent that is used for sodium chlorite degumming and bleaching of flax.
A present invention also purpose provides that technology is simple, efficient energy-saving, helps cleaner production and avoid the flax degumming bleaching process of environmental pollution.
The stabilizing agent that is used for sodium chlorite degumming and bleaching of flax of the present invention, by percentage to the quality, this stabilizing agent is by hexa-methylene amine 3～12%, sulfuric acid hydrazine 1～6%, triethanolamine 2～10%, the composite saturated solution that forms of ammonium persulfate 1～8% and water.
The preparation method who is used for the stabilizing agent of sodium chlorite degumming and bleaching of flax of the present invention is, by percentage to the quality, with hexa-methylene amine 3～12%, sulfuric acid hydrazine 1～6%, triethanolamine 2～10%, ammonium persulfate 1～8% and water mix, and stir, and obtain being used for the stabilizing agent of sodium chlorite degumming and bleaching of flax.
The processing step of stabilizing agent when being used for sodium chlorite degumming and bleaching of flax that is used for sodium chlorite degumming and bleaching of flax of the present invention is: (1) pickling, (2) chlorite bleaching, (3) washing.
The technology of described pickling is: (1) pickling (sulfuric acid 5～15g/L, room temperature), (2) are banked up (room temperature, 15～30 minutes), (3) washing;
The technology of described chlorite bleaching is: sodium chlorite consumption 10～30g/L, pH=3.5～6, activator acetic acid 1～10g/L, stabilizing agent 1～10g/L, bath raio 1: 10～50,80～102 ℃ of temperature, steaming time 0.5～1 hour.
The present invention compared with prior art has following advantage:
Because the present invention only utilizes sodium chlorite that flax degumming is bleached.During pickling, sulfuric acid under the effect of bleeding agent, is distributed in rove or the fabric on the one hand equably, a part of rove filoplume is fallen by acid oxidase or shortens.On the other hand, spent acid provides the Asia to float the required pH value of solution, for floating the creation reaction condition in next step Asia.The chlorous acid that sodium chlorite generates in acid solution is the acid of a moderate strength, can ionization in water.The sodium chlorite instability can resolve into chlorine dioxide, chlorine and hydrochloric acid, and temperature is high more, and decomposition rate is fast more.Following chemical reaction etc. takes place in sodium chlorite in acid solution:
5clo
2 -+2H
+→4clo
2+20H
-+Cl
- (1)
3clo
2 -→2clo
3 -+Cl
- (2)
Wherein reaction (1) is key reaction, and reaction (2) etc. is side reaction, in the process of sodium chlorite degumming and bleaching, and clo
3 -, Cl
-No discoloration, and chlorine dioxide plays a decisive role to linen fibre, comprises the chlorine dioxide that reaches gaseous state in the solution.Chlorine dioxide can make pigment, lignin and the pectic substance dissolving of flax, and the division degree is increased sharply, and whiteness increases, but the hydroxyl of oxycellulose not, and the aldehyde radical of oxycellulose molecular link end does not only cause the fracture of cellulosic molecule key yet, thereby can keep fiber powerful preferably.In the process of bleaching, add the sodium chlorite stabilizing agent, can effectively suppress generation, the loss of chlorine dioxide, make it to satisfy bleaching conditions, improve yarn quality, help protecting operator's health and maintenance facility again.Reduce the consumption of sodium chlorite, improved the utilization rate of sodium chlorite.Water-washing process is mainly washed a small amount of short flannel, partial oxidation lignin, part of ash and micro-spent acid off.Therefore, have shortened process, reduce sodium chlorite consumption, reduced pollutant discharging, help advantages such as cleaner production and environmental protection.
Description of drawings
Fig. 1. the conventional degumming and bleaching process flow diagram of flax.
Fig. 2. the technical scheme of the embodiment of the invention 1,2,3,4 is to the process flow diagram of flax degumming bleaching.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment 1
See also accompanying drawing 2, present embodiment to the technological process of flax roving degumming and bleaching as shown in Figure 2.
The yarn for the treatment of degumming and bleaching adopts flax roving (rove of dew retting spinning, rove hank number is 18Nm) 200g.Flax roving is flooded sulfuric acid (sulfuric acid 10g/L, room temperature, 20 minutes) → washing, use sodium chlorite solution's (bath raio 1: 10 then, sodium chlorite consumption 15g/L, pH=3.5, activator acetic acid 3g/L, stabilizing agent 3g/L, 95 ℃ of temperature) handled 40 minutes, handle after washing, the degumming and bleaching processing of flax roving is finished in oven dry.Wherein, the composition of stabilizing agent (mass percent) is: hexa-methylene amine 3%, and sulfuric acid hydrazine 1%, triethanolamine 2%, ammonium persulfate 1% and water are composite to form.
Table 1 is the main performance index contrast of adopting embodiment 1 flax roving degumming and bleaching and conventional degumming and bleaching.Wherein, loss late is to deduct the dry weight of handling the back yarn according to the dry weight of handling preceding yarn to calculate divided by the mass percent of yarn dry weight before handling; Adopt YG-061 type electronics single yarn tester to test, measure according to the method for GB/T3916-1983; Sodolin brute force and breaking length are measured on YG-026A type imported electronic fabric strength tester, referring to the GB/T3923.1-1997 textiles.Fabric whiteness is measured on WSD-III type whiteness instrument, and folding 8 layers of sample is tested 3 times, gets arithmetic mean of instantaneous value; Bar evenness is tested on the thick bar fiber strand evenness tester of Y311 type, evaluates according to GB/T3292-1997; The quantity of fiber crops particle and the grade of yarn are measured according to FZ/T32001-1998.With yarn the Asia float soak in the prescription float after, decatize certain hour in the sealing decatize device of alkaline KI absorption liquid is arranged is measured absorbed chlorine dioxide; With distilled water yarn is cleaned, analyzed remaining sodium chlorite in the washing lotion.
Table 1
| Technology | Whiteness | Background color | Loss late (%) | Wet strong (g/500mm) | Breaking length (km) | Bar is done scoring (%) | The fiber crops particle | The spun yarn quality | Sodium chlorite transforms the chlorine dioxide (%) of overflowing | The resolution ratio of sodium chlorite (%) |
| Common process | 51 | Yellow | 13.2 | 1300 | 17 | 70 | 13 | Second-class | 17.1 | 70 |
| Embodiment 1 technology | 60 | Not obvious | 8.7 | 1520 | 24.2 | 80 | 8 | Excellent | 3.6 | 95 |
Can see by table 1 data; after flax roving adopts the degumming and bleaching technology of this kind environmental protection; whiteness, loss late, wet strong, yarn evenness, numb particle all obviously improve; and the resolution ratio of sodium chlorite significantly improves, sodium chlorite transforms the chlorine dioxide of overflowing and obviously reduces; have shortened process, reduce sodium chlorite consumption, reduced pollutant discharging, help advantages such as cleaner production and environmental protection.
Embodiment 2
See also accompanying drawing 2, present embodiment to the technological process of flax roving degumming and bleaching as shown in Figure 2.
The rove for the treatment of degumming and bleaching adopts flax roving (rove of dew retting spinning, rove hank number is 20Nm) 200g.Flax roving is flooded sulfuric acid (sulfuric acid 8g/L, room temperature, 30 minutes) → washing, use sodium chlorite solution's (bath raio 1: 15 then, sodium chlorite consumption 20g/L, pH=4, activator acetic acid 5g/L, stabilizing agent 5g/L, 100 ℃ of temperature) handled 30 minutes, handle after washing, the degumming and bleaching processing of flax roving is finished in oven dry.Wherein, the composition of stabilizing agent (mass percent) is: hexa-methylene amine 5%, and sulfuric acid hydrazine 3%, triethanolamine 6%, ammonium persulfate 3% and water are composite to form.
Other condition and method are with embodiment 1.
Table 2 is main performance index contrasts of adopting embodiment 2 degumming and bleachings and conventional degumming and bleaching.
Table 2
| Technology | Whiteness (%) | Background color | Loss late (%) | Wet strong (g/500mm) | Breaking length (km) | Bar is done scoring (%) | The fiber crops particle | The spun yarn quality | Sodium chlorite transforms the chlorine dioxide (%) of overflowing | The resolution ratio of sodium chlorite (%) |
| Common process | 51 | Yellow | 13.2 | 1300 | 17 | 70 | 13 | Second-class | 17.1 | 70 |
| Embodiment 1 technology | 68 | Not obvious | 8.2 | 1650 | 26.8 | 90 | 6 | Excellent | 1.2 | 97 |
Can see by table 2; after flax roving adopts the degumming and bleaching technology of this kind environmental protection; whiteness, loss late, wet strong, yarn evenness, numb particle all obviously improve; and the resolution ratio of sodium chlorite significantly improves, sodium chlorite transforms the chlorine dioxide of overflowing and obviously reduces; have shortened process, reduce sodium chlorite consumption, reduced pollutant discharging, help advantages such as cleaner production and environmental protection.
Embodiment 3
See also accompanying drawing 2, present embodiment to the technological process of sodolin bleaching as shown in Figure 2.
Fabric to be bleached adopts sodolin (plain weave, 220g/m
2, 150 * 158 pieces/decimeter) and one of 30 * 40cm.Sodolin is rolled acid (sulfuric acid 15g/L, room temperature) → (room temperature of banking up, 20 minutes) → washing, use sodium chlorite solution (sodium chlorite consumption 20g/L, pH=4 then, activator acetic acid 6g/L, stabilizing agent 8g/L, 95 ℃ of temperature) handled 30 minutes, handle after washing, the bleaching processing of sodolin is finished in oven dry.Sodolin after the bleaching is dyeed with following prescription.Wherein, the composition of stabilizing agent (mass percent) is: hexa-methylene amine 6%, and sulfuric acid hydrazine 4%, triethanolamine 5%, ammonium persulfate 4% and water are composite to form.
REACTIVE DYES B-4RFN 1%, Nacl 12～25g/L, levelling agent 5～10g/L, 85 ℃ of dyeing temperatures, dyeing time 40 minutes; The liquid of soaping: soap 4g/L, soda ash 2g/L, bath raio 1: 20.
Other condition and method are with embodiment 1.
Table 3 is to adopt the bleaching of embodiment 3 sodolins and the main performance index of conventional bleaching to contrast.Table 4 is contrasts of adopting embodiment 3 bleaching back sodolin dyeing and normal dyeing performance indications.Wherein the dyestuff dye uptake is measured and is calculated: take out fabric in dyeing under 80 ℃ after 60 minutes respectively, and clean three times with distilled water, and collect raffinate and washing lotion, transfer in the volumetric flask of 250mL, cooling, constant volume.Under the same conditions, measure its raffinate (A
Residual) and former dye liquor (A
0) absorbance, dye uptake (%)=(1-A
Residual/ A
0) * 100%; The evaluation of dyeing sample crock fastness is measured according to GB/T3920-1997 with the crock fastness instrument, and (GB251-1984) grades with the staining gray scale; The mensuration of soaping fastness is that DYED FABRICS is soaped in concentration is the soap solution of 5g/L, and temperature is 40 ℃, 30 minutes time, bath raio 1: 50; Washing is dried again.Grade with gray scale (GB251-1984) with the evaluation variable color.
Table 3
Table 4
Can see by table 3,4; after sodolin adopts the bleaching technology of this kind environmental protection; whiteness, brute force, elongation at break all obviously improve; and the resolution ratio of sodium chlorite significantly improves, sodium chlorite transforms the chlorine dioxide of overflowing and obviously reduces; has shortened process; reduce sodium chlorite consumption, reduced pollutant discharging, help advantages such as cleaner production and environmental protection, the dyeability of the sodolin after handling through the bleaching technology of this environmental protection can reach the standard of common process dyeing.
Embodiment 4
See also accompanying drawing 2, present embodiment to the technological process of sodolin bleaching as shown in Figure 2.
Fabric to be bleached adopts sodolin (plain weave, 220g/m
2, 150 * 158 pieces/decimeter) and one of 30 * 40cm.Sodolin is rolled acid (sulfuric acid 10g/L, room temperature) → (room temperature of banking up, 30 minutes) → washing, use sodium chlorite solution (sodium chlorite consumption 30g/L, pH=4 then, activator acetic acid 10g/L, stabilizing agent 120g/L, 100 ℃ of temperature) handled 45 minutes, handle after washing, the bleaching processing of sodolin is finished in oven dry.The dyeing prescription of sodolin after the bleaching by embodiment 3 dyeed.Wherein, the composition of stabilizing agent (mass percent) is: hexa-methylene amine 10%, and sulfuric acid hydrazine 6%, triethanolamine 8%, ammonium persulfate 8% and water are composite to form.
Other condition and method are with embodiment 1.
Table 5 is to adopt the bleaching of embodiment 4 sodolins and the main performance index of fabrics in general bleaching to contrast.Table 6 is contrasts of adopting embodiment 4 bleaching back sodolin dyeing and normal dyeing performance indications.
Table 5
Table 6
Can see by table 5,6, after sodolin adopts the bleaching technology of this kind environmental protection, whiteness, brute force, elongation at break all obviously improve, and the resolution ratio of sodium chlorite significantly improves, sodium chlorite transforms the chlorine dioxide of overflowing and obviously reduces, have shortened process, reduce sodium chlorite consumption, reduced the discharging of pollutant; Can reach the standard of common process dyeing through the dyeability of the sodolin after the bleaching technology processing of this environmental protection.
Claims (6)
1. stabilizing agent that is used for sodium chlorite degumming and bleaching of flax, it is characterized in that: by percentage to the quality, this stabilizing agent is by hexa-methylene amine 3～12%, sulfuric acid hydrazine 1～6%, triethanolamine 2～10%, the composite saturated solution that forms of ammonium persulfate 1～8% and water.
2. preparation method who is used for the stabilizing agent of sodium chlorite degumming and bleaching of flax according to claim 1, it is characterized in that: by percentage to the quality, with hexa-methylene amine 3～12%, sulfuric acid hydrazine 1～6%, triethanolamine 2～10%, ammonium persulfate 1～8% and water mix, and stir, and obtain being used for the stabilizing agent of sodium chlorite degumming and bleaching of flax.
3. purposes that is used for the stabilizing agent of sodium chlorite degumming and bleaching of flax according to claim 1, it is characterized in that: this stabilizing agent is used for sodium chlorite degumming and bleaching of flax.
4. purposes according to claim 3 is characterized in that: the processing step of described stabilizing agent when being used for sodium chlorite degumming and bleaching of flax is: (1) pickling, (2) chlorite bleaching, (3) washing.
5. purposes according to claim 4 is characterized in that: the technology of described pickling is: at room temperature carry out pickling with sulfuric acid 5～15g/L, wash after banking up;
The technology of described chlorite bleaching is: sodium chlorite consumption 10～30g/L, pH=3.5～6, activator acetic acid 1～10g/L, stabilizing agent 1～10g/L, bath raio 1: 10～50,80～102 ℃ of temperature, steaming time 0.5～1 hour.
6. purposes according to claim 5 is characterized in that: the described time of banking up is 15～30 minutes.
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|---|---|---|---|
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|---|---|---|---|
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Cited By (1)
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|---|---|---|---|---|
| CN101878779A (en) * | 2010-07-08 | 2010-11-10 | 北京可佳永好科贸有限公司 | Disinfectant |
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| CN101581033B (en) * | 2008-05-13 | 2011-11-09 | 哈尔滨理工大学 | Peroxyacetic acid stabilizing synergistic agent for bleaching flax fibers |
| CN103334291B (en) * | 2013-07-10 | 2014-10-29 | 广西大学 | Method for bleaching cotton fabric by chlorine dioxide |
| CN103437142B (en) * | 2013-07-29 | 2015-07-29 | 湖州申祥丝织有限责任公司 | The agent of a kind of COTTON FABRIC combined bleach |
| CN106758131A (en) * | 2016-12-08 | 2017-05-31 | 佛山迅拓奥科技有限公司 | A kind of chlorite bleaching activator containing praziquantel and its preparation method and application |
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Cited By (2)
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Granted publication date: 20081203 Termination date: 20091225 |