CN107740261B - Bleaching method of soybean protein fiber - Google Patents
Bleaching method of soybean protein fiber Download PDFInfo
- Publication number
- CN107740261B CN107740261B CN201711136101.1A CN201711136101A CN107740261B CN 107740261 B CN107740261 B CN 107740261B CN 201711136101 A CN201711136101 A CN 201711136101A CN 107740261 B CN107740261 B CN 107740261B
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- China
- Prior art keywords
- soybean protein
- bleaching
- protein fiber
- whiteness
- bleached
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/50—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs by irradiation or ozonisation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/70—Multi-step processes
Abstract
The invention discloses a bleaching method of soybean protein fibers, which comprises the steps of irradiating the soybean protein fibers with ultraviolet light, bleaching the soybean protein fibers irradiated with the ultraviolet light with hydrogen peroxide, washing the bleached fabrics with water, and drying to obtain bleached finished products, wherein the ultraviolet light irradiation destroys pigment structures in the soybean protein fibers which are difficult to remove in the hydrogen peroxide bleaching process, so that the bleaching whiteness of the soybean protein fiber fabrics is greatly improved. The method of the invention realizes the bleaching processing of the high-whiteness soybean protein fiber fabric, the whiteness, the strength, the dyeing performance and other indexes of the bleached soybean protein fiber fabric meet the requirements, the whiteness of the soybean protein fiber fabric is improved by the method, and the guarantee is provided for the bright color, the light color and the fluorescent color dyeing of the soybean protein fiber fabric.
Description
Technical Field
The invention belongs to the technical field of dyeing and finishing, and relates to a method for realizing high bleaching whiteness of soybean protein fibers by combining ultraviolet irradiation and hydrogen peroxide bleaching, in particular to a method for realizing light color, bright color and fluorescent color dyeing of the soybean protein fibers.
Background
The soybean protein fiber is a regenerated protein fiber which is comfortable to wear, soft in hand feeling and good in moisture absorption, and the knitted fabric is an ideal fabric for making underwear and children's garments. However, the soybean protein fiber has very low whiteness and very high yellowness due to the existence of isoflavone, and the conventional bleaching processes of oxidants such as hydrogen peroxide and reducing agents are difficult to obtain high bleaching whiteness, so that the dyeing processing of light color, bright color and fluorescent color is difficult to meet.
The invention patent CN 1277018C discloses a method for bleaching soybean protein fibers by reduction and oxidation, the invention patent CN 103173992B discloses a method for bleaching soybean protein fibers by hydrogen peroxide and a bleaching activator, the invention patent CN 105484010A discloses a method for bleaching soybean protein fibers by hydrogen peroxide and irradiating bleached fabrics by sunlight, the method for bleaching soybean protein fibers can improve the whiteness of the soybean protein fiber fabrics, and no report about a method for bleaching soybean protein fibers by ultraviolet light and hydrogen peroxide in two steps to obtain high-bleaching whiteness is found at present.
Disclosure of Invention
The invention aims to solve the technical problem that the conventional oxidation and reduction bleaching method for soybean protein fibers is difficult to obtain high bleaching whiteness and realize the dyeing and finishing of light color, bright color and fluorescent color of the soybean protein fibers at present, and provides a method for bleaching the soybean protein fibers by using ultraviolet light and then using hydrogen peroxide to realize the dyeing and finishing of the high bleaching whiteness of the soybean protein fibers.
In order to solve the technical problems, the invention adopts the following technical scheme:
a bleaching method for soybean protein fibre includes such steps as irradiating soybean protein fibre by ultraviolet ray, bleaching the soybean protein fibre by chemical bleaching agent, washing the bleached soybean protein fibre with water and baking.
The ultraviolet irradiation intensity is 200-1000W, and the irradiation time is 2-20 min.
The chemical bleaching agent is formulated as follows: 3-10g/L of hydrogen peroxide and 2-7g/L of sodium silicate.
The bleaching temperature is 70-100 ℃, and the bleaching time is 20-100 min.
The invention has the beneficial effects that: the invention provides a dyeing and finishing process for realizing high bleaching whiteness of soybean protein fibers by a method for irradiating the soybean protein fibers by ultraviolet light and bleaching the soybean protein fibers by hydrogen peroxide. The ultraviolet irradiation destroys pigment structures which are difficult to remove in the soybean protein fiber in the hydrogen peroxide bleaching process, and the bleaching whiteness of the soybean protein fiber fabric is greatly improved. The method of the invention realizes the bleaching processing of the high-whiteness soybean protein fiber fabric, the whiteness, the strength, the dyeing performance and other indexes of the bleached soybean protein fiber fabric meet the requirements, the whiteness of the soybean protein fiber fabric is improved by the method, and the guarantee is provided for the bright color, the light color and the fluorescent color dyeing of the soybean protein fiber fabric. The technical scheme of the invention has simple and feasible process, has no special requirements on raw materials, auxiliaries and fabrics, can realize large-scale production by using the conventional bleaching equipment of a printing and dyeing mill, and has wide application prospect.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the following examples are illustrative only and are not intended to limit the scope of the invention, which is to be given numerous insubstantial modifications and adaptations by those skilled in the art based on the teachings set forth above.
Example 1
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 5min by using a 300W ultraviolet lamp, bleaching the soybean protein fiber knitted fabric at 90 ℃ by using 10g/L hydrogen peroxide and 3g/L sodium silicate for 30min, washing with water, and drying to obtain a bleached finished product.
Example 2
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 10min by using a 500W ultraviolet lamp, bleaching the soybean protein fiber knitted fabric at 95 ℃ by using 20g/L hydrogen peroxide and 2g/L sodium silicate for 50min, and then washing and drying to obtain a bleached finished product.
Example 3
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 2min by using an ultraviolet lamp of 800W, bleaching the soybean protein fiber knitted fabric at 100 ℃ by using 5g/L hydrogen peroxide and 7g/L sodium silicate for 20min, washing with water, and drying to obtain a bleached finished product.
Example 4
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 2min by using a 1000W ultraviolet lamp, bleaching the soybean protein fiber knitted fabric at 70 ℃ by using 10g/L hydrogen peroxide and 5g/L sodium silicate for 70min, and then washing and drying to obtain a bleached finished product.
Example 5
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 3min by using a 900W ultraviolet lamp, bleaching the soybean protein fiber knitted fabric at 80 ℃ by using 8g/L hydrogen peroxide and 3g/L sodium silicate for 35min, and then washing and drying to obtain a bleached finished product.
Example 6
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 12min by using a 400W ultraviolet lamp, bleaching the soybean protein fiber knitted fabric at 75 ℃ by using 8g/L hydrogen peroxide and 4.5g/L sodium silicate for 25min, and then washing and drying to obtain a bleached finished product.
Example 7
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 14min by using a 700W ultraviolet lamp, bleaching the soybean protein fiber knitted fabric at 90 ℃ by using 3g/L hydrogen peroxide and 5g/L sodium silicate for 100min, washing with water, and drying to obtain a bleached finished product.
Example 8
A soybean protein fiber bleaching method comprises the following steps:
irradiating the soybean protein fiber knitted fabric for 20min by using a 200W ultraviolet lamp, bleaching the soybean protein fiber knitted fabric at 85 ℃ by using 6g/L hydrogen peroxide and 4g/L sodium silicate for 30min, washing with water, and drying to obtain a bleached finished product.
Effects of the invention
After the soybean protein fiber fabric is subjected to ultraviolet irradiation and hydrogen peroxide bleaching treatment in the embodiments 1-8, the bleached fabric is subjected to the following tests, and the test results are shown in table 1.
1) Whiteness measurement of bleached fabrics
The ISO whiteness was measured using a PN-48B type whiteness meter, each cloth sample was layered into four layers, and different portions were measured 6 times, respectively, and the average of the 6 data was taken as the final data, and the results are shown in table 1.
2) Burst strength measurement of bleached Fabric
The results of the test according to GB/T19976 & 2005 Steel ball method for measuring bursting Strength of textiles are shown in Table 1.
3) Determination of dyeing Properties of bleached Fabric
Acid dark blue 5R 2% o.m.f, pH 4, dyeing at 40 ℃, heating to 90 ℃ at the heating rate of 1 ℃/min, keeping the temperature for 60min, testing the dye-uptake percentage (E%) after dyeing, calculating the dye liquor absorbance on a TU-1800 ultraviolet visible spectrophotometer (Beijing Puc analysis) by adopting a residual liquor method according to the formula (1). In the formula A0And A1The absorbance of the dyeing stock solution and the residual solution are respectively. The measurement results are shown in table 1.
Table 1 test results of bleaching soybean protein fiber fabric
As can be seen from Table 1, the technical scheme provided by the invention can endow the soybean protein fiber fabric with higher bleaching whiteness, the strength loss of the bleached fabric is smaller, and the dyeing performance is basically not reduced. And the soybean protein fibers are firstly bleached by adopting 15g/L hydrogen peroxide, and then the soybean protein fibers bleached by the hydrogen peroxide are irradiated by ultraviolet light for 5min, so that the whiteness of the soybean protein fibers is not obviously improved, and the bleaching effect is far lower than that of the soybean protein fibers bleached by the hydrogen peroxide after the ultraviolet light is irradiated.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A method for bleaching soybean protein fibers is characterized by comprising the following steps: irradiating the soybean protein fibers by adopting ultraviolet light, bleaching the soybean protein fibers irradiated by the ultraviolet light by using a chemical bleaching agent, and finally washing and drying the bleached soybean protein fibers;
the ultraviolet irradiation intensity is 200-1000W, and the irradiation time is 2-20 min;
the chemical bleaching agent formula comprises: 3-10g/L of hydrogen peroxide and 2-7g/L of sodium silicate;
the bleaching temperature is 70-100 ℃, and the bleaching time is 20-100 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136101.1A CN107740261B (en) | 2017-11-16 | 2017-11-16 | Bleaching method of soybean protein fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136101.1A CN107740261B (en) | 2017-11-16 | 2017-11-16 | Bleaching method of soybean protein fiber |
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| Publication Number | Publication Date |
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| CN107740261A CN107740261A (en) | 2018-02-27 |
| CN107740261B true CN107740261B (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711136101.1A Active CN107740261B (en) | 2017-11-16 | 2017-11-16 | Bleaching method of soybean protein fiber |
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| CN115467178A (en) * | 2022-09-21 | 2022-12-13 | 江西给力纺织有限公司 | Fading treatment method for leftover materials of spandex-containing waste cloth |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057334A (en) * | 1990-07-13 | 1991-10-15 | Ort's Inc. | Process for recovery of cellulose |
| CN1673443A (en) * | 2004-03-24 | 2005-09-28 | 独立行政法人产业技术综合研究所 | Method for bleaching fibrous articles |
| CN101405451A (en) * | 2006-03-28 | 2009-04-08 | 日清纺织株式会社 | Bleaching/reforming apparatus for fiber and fiber structure |
| CN103966832A (en) * | 2014-05-05 | 2014-08-06 | 芜湖富春染织有限公司 | Method for preparing composite photocatalysis bleaching system and textile bleaching technology |
| CN105484010A (en) * | 2015-12-19 | 2016-04-13 | 张家港市振新印染有限公司 | Bleaching technology for soybean protein fibers |
-
2017
- 2017-11-16 CN CN201711136101.1A patent/CN107740261B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057334A (en) * | 1990-07-13 | 1991-10-15 | Ort's Inc. | Process for recovery of cellulose |
| CN1673443A (en) * | 2004-03-24 | 2005-09-28 | 独立行政法人产业技术综合研究所 | Method for bleaching fibrous articles |
| CN101405451A (en) * | 2006-03-28 | 2009-04-08 | 日清纺织株式会社 | Bleaching/reforming apparatus for fiber and fiber structure |
| CN103966832A (en) * | 2014-05-05 | 2014-08-06 | 芜湖富春染织有限公司 | Method for preparing composite photocatalysis bleaching system and textile bleaching technology |
| CN105484010A (en) * | 2015-12-19 | 2016-04-13 | 张家港市振新印染有限公司 | Bleaching technology for soybean protein fibers |
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| CN107740261A (en) | 2018-02-27 |
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