CN103451908A - Wool fiber reducing bleaching process - Google Patents
Wool fiber reducing bleaching process Download PDFInfo
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- CN103451908A CN103451908A CN2013103882818A CN201310388281A CN103451908A CN 103451908 A CN103451908 A CN 103451908A CN 2013103882818 A CN2013103882818 A CN 2013103882818A CN 201310388281 A CN201310388281 A CN 201310388281A CN 103451908 A CN103451908 A CN 103451908A
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- wool fibre
- bleaching
- wool
- reducing bleach
- reduced powder
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Abstract
The invention discloses a wool fiber reducing bleaching process, which comprises the following steps: S1, bleaching wool fibers at the bleaching temperature of 70 DEG C in a solution in which the mass concentration of a reducing powder corresponding to the wool fibers is 20% and the bath ratio is 1: 40, for 40 min; and S2, washing the wool fibers by using water and drying the wool fibers. The wool fiber reducing bleaching process provided by the invention is simple, and has low harm on the strength of the wool fibers on the basis of guaranteeing the whiteness.
Description
Technical field
The present invention relates to wool bleaching technology field, relate in particular to a kind of wool fibre reducing bleach technique.
Background technology
Traditional beret is a kind of without the soft standard army cap of eaves, usually used as personnel's sign of detached force, special force and the airborne troop of some national armies.Beret have be convenient to fold, be not afraid of extruding, easily carry, the advantage such as attractive in appearance.Famous high-ranking military officer's marshal Montgomery just often has on beret in World War II, but also has on general and two cap insignias of armored force unusually.Some countries are distinguished the different arm of the services on color.
Wool fibre need to carry out bleaching process usually, and can carry out reducing bleach.Wool fibre after reducing bleach has its unique style and characteristics, than the coloured light of the product after oxidation bleaching partially green-blue light, and coloured light is soft, is that oxidation bleaching institute is irreplaceable.But reducing bleach is more serious to the strength damage of wool or cashmere fiber, and technology difficulty is larger.
In view of this, for above-mentioned technical problem, be necessary to provide a kind of wool fibre reducing bleach technique.
Summary of the invention
Technical problem to be solved by this invention is exactly for above-mentioned deficiency of the prior art, and a kind of wool fibre reducing bleach technique is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of wool fibre reducing bleach technique, described technique comprises:
S1, at bleaching temperature, be that 70 ℃, reduced powder are 20% with respect to the wool fibre mass concentration, in the solution that bath raio is 1: 40, wool fibre bleached, bleaching time is 40min;
S2, wool fibre is washed and dried.
Preferably, described reduced powder comprises sodium dithionite.
Preferably, described reduced powder also comprises one or more in complexing agent, buffer.
Preferably, described complexing agent comprises one or more in phosphate, alcamines, aminocarboxylate, hydroxycarboxylate, organic phosphonate, polyacrylic.
Preferably, described buffer is acid-base buffer agent, comprises hydrochlorate or alkali salt.
Preferably, in described step S1, the pH value of solution is 5～6.
Preferably, in described step S1, the pH value of solution is 5.5.
The invention has the beneficial effects as follows, wool fibre reducing bleach technique of the present invention is simple, on the basis that guarantees whiteness, makes the fiber strength damage less.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
The schematic flow sheet that Fig. 1 is wool fibre reducing bleach technique in the present invention's one specific embodiment.
Fig. 2 be in the present invention's one specific embodiment bleaching temperature to wool fibre whiteness and powerful broken line graph.
Fig. 3 is that in the present invention's one specific embodiment, reduced powder concentration is floated wool fibre whiteness and powerful broken line graph.
Fig. 4 be in the present invention's one specific embodiment bleaching time to wool fibre whiteness and powerful broken line graph.
The specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
The embodiment of the invention discloses a kind of wool fibre reducing bleach technique, comprising:
S1, at bleaching temperature, be that 70 ℃, reduced powder are 20% with respect to the wool fibre mass concentration, in the solution that bath raio is 1: 40, wool fibre bleached, bleaching time is 40min;
S2, wool fibre is washed and dried.
Further, reduced powder comprises sodium dithionite.
Further, reduced powder also comprises one or more in complexing agent, buffer.
Further, complexing agent comprises one or more in phosphate, alcamines, aminocarboxylate, hydroxycarboxylate, organic phosphonate, polyacrylic.
Further, buffer is acid-base buffer agent, comprises hydrochlorate or alkali salt.
Further, in step S1, the pH value of solution is 5～6.
Further, in step S1, the pH value of solution is 5.5.
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Embodiment based in the application, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all should belong to the scope of the application's protection.
Fig. 1 is the schematic flow sheet of wool fibre reducing bleach technique in the present invention's one specific embodiment, and it specifically comprises:
S1, at bleaching temperature, be that 70 ℃, reduced powder are 20% with respect to the wool fibre mass concentration, in the solution that bath raio is 1: 40, wool fibre bleached, bleaching time is 40min, preferably, in this step, the pH value of solution is 5～6, particularly, and as the pH value is 5.5;
S2, wool fibre is washed and dried.
Reduced powder is to take the stabilisation reductant that sodium dithionite is main component, containing complexing agent and buffer.Complexing agent comprises one or more in phosphate, alcamines, aminocarboxylate, hydroxycarboxylate, organic phosphonate, polyacrylic; Buffer is acid-base buffer agent, comprises hydrochlorate or alkali salt.
Sodium dithionite can destroy natural colouring matter in cashmere, because the amount of pigment contained in cashmere is certain, when reduced powder concentration amount acquires a certain degree, the cashmere whiteness increases just no longer obvious.Sodium dithionite can be attacked the disulfide bond in the cashmere structure simultaneously, causes the powerful decline of cashmere, and when concentration is excessive, thereby sodium dithionite mainly reacts with disulfide bond and causes the cashmere brute force greatly to descend.
The impact of temperature on bleaching effect:
Selective reduction powder concentration 20% (o.w.f.), bleaching time 40min, bath raio: 1: 40, change bleaching temperature, finding out temperature affects bleaching effect, and result is as table 1.
The impact of table 1 bleaching temperature on the wool bleaching effect
Obtain Fig. 2 by table 1, can find out that the whiteness of the rear wool of bleaching improves along with the rising of temperature, brute force descends along with the rising of temperature.When bleaching temperature is 70 ℃, whiteness rises to 16.53%, under brute force, is 11.10%; When temperature continues to rise, whiteness rises not obvious, and powerful decline obviously, be 70 ℃ so select the bleaching temperature of wool.
The impact of the concentration of reduced powder on bleaching effect:
Above-mentioned test shows: 70 ℃ of bleaching temperatures are suitable, fixing bleaching time 40min, and bath raio: 1: 40, change reduced powder concentration, the test whiteness is with powerful, and result is as following table 2.
The impact of the concentration of table 2 reduced powder on the wool bleaching effect
Obtain Fig. 3 by table 2, can find out, the increase of reduced powder concentration, after bleaching, the whiteness of wool increases, powerful decline.When reduced powder concentration is 20% (o.w.f.), whiteness rises to 14.31%, and brute force drops to 11.17%, when reduced powder concentration continues to increase, after bleaching, the brute force of wool descends seriously, and wool damage severity is described, and the raising of the wool whiteness after bleaching is not obvious.So selective reduction powder concentration is that 20% (o.w.f.) is suitable.
The impact of time on bleaching effect:
Reduced powder concentration 20% (o.w.f.), 70 ℃ of bleaching temperatures, bath raio: are best reduced powder Pressure, Concentration, Temperature conditions at 1: 40, fix this two conditions, change bleaching time, and after the test bleaching, the whiteness of wool is with powerful, and result is as table 3.
The impact of table 3 bleaching time on the wool bleaching effect
By table 3, with Fig. 4, can be found out, along with the increase of bleaching time, after bleaching, the whiteness of wool increases, powerful decline.When bleaching time is 40min, whiteness rises to 15.11%, and brute force drops to 12.21%, when bleaching time continues to increase, after bleaching, the brute force of wool descends, when bleaching time is 40min, brute force drops to 15.21%, and wool damage severity is described, selecting best bleaching time is 40min.
Consider whiteness and powerful balance, on the basis that guarantees whiteness, make the fiber strength damage less.Can draw the optimised process of reducing bleach wool: bleaching temperature is 70 ℃, and bleaching time is 40min, and reduced powder concentration is 20% (o.w.f.).
By technique scheme, can be found out, wool fibre reducing bleach technique of the present invention is simple, on the basis that guarantees whiteness, makes the fiber strength damage less.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to the claim scope.
Claims (7)
1. a wool fibre reducing bleach technique, is characterized in that, described technique comprises:
S1, at bleaching temperature, be that 70 ℃, reduced powder are 20% with respect to the wool fibre mass concentration, in the solution that bath raio is 1: 40, wool fibre bleached, bleaching time is 40min;
S2, wool fibre is washed and dried.
2. wool fibre reducing bleach technique according to claim 1, is characterized in that, described reduced powder comprises sodium dithionite.
3. wool fibre reducing bleach technique according to claim 2, is characterized in that, described reduced powder also comprises one or more in complexing agent, buffer.
4. wool fibre reducing bleach technique according to claim 3, is characterized in that, described complexing agent comprises one or more in phosphate, alcamines, aminocarboxylate, hydroxycarboxylate, organic phosphonate, polyacrylic.
5. wool fibre reducing bleach technique according to claim 3, is characterized in that, described buffer is acid-base buffer agent, comprises hydrochlorate or alkali salt.
6. wool fibre reducing bleach technique according to claim 1, is characterized in that, in described step S1, the pH value of solution is 5～6.
7. wool fibre reducing bleach technique according to claim 1, is characterized in that, in described step S1, the pH value of solution is 5.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103882818A CN103451908A (en) | 2013-08-30 | 2013-08-30 | Wool fiber reducing bleaching process |
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| CN2013103882818A CN103451908A (en) | 2013-08-30 | 2013-08-30 | Wool fiber reducing bleaching process |
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| CN103451908A true CN103451908A (en) | 2013-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544178A (en) * | 2016-01-27 | 2016-05-04 | 江苏联宏纺织有限公司 | Raccoon dog hair fiber bleaching and decoloration method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243543A (en) * | 2013-05-27 | 2013-08-14 | 宁夏荣昌绒业集团有限公司 | Decoloration method of colored cashmere loose fiber |
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2013
- 2013-08-30 CN CN2013103882818A patent/CN103451908A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243543A (en) * | 2013-05-27 | 2013-08-14 | 宁夏荣昌绒业集团有限公司 | Decoloration method of colored cashmere loose fiber |
Non-Patent Citations (4)
| Title |
|---|
| 和超伟 等: "羊绒还原漂白工艺探讨", 《毛纺科技》 * |
| 和超伟: "蛋白质纤维羊绒与羊毛的漂白工艺研究", 《北京服装学院硕士论文》 * |
| 戴维•M.刘易斯: "《羊毛染色》", 30 November 2010 * |
| 盛冠忠: "模糊正交法用于羊绒还原漂白工艺参数优化", 《毛纺科技》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544178A (en) * | 2016-01-27 | 2016-05-04 | 江苏联宏纺织有限公司 | Raccoon dog hair fiber bleaching and decoloration method |
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Application publication date: 20131218 |