CN105758804A - Detection method of Lyocell fiber and modal fiber - Google Patents
Detection method of Lyocell fiber and modal fiber Download PDFInfo
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- CN105758804A CN105758804A CN201410763810.2A CN201410763810A CN105758804A CN 105758804 A CN105758804 A CN 105758804A CN 201410763810 A CN201410763810 A CN 201410763810A CN 105758804 A CN105758804 A CN 105758804A
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Abstract
The invention provides a detection method of Lyocell fiber and modal fiber. The detection method comprises the following steps: (1) a colouring agent A, a colouring agent B and a decolorising agent C are prepared; (2) a fiber sample is dipped in the colouring agent A for 1-3 minutes, the sample is taken out and washed till no colors separate out, and moisture of the fiber sample is absorbed; (3) the fiber sample is dipped in the colouring agent B for 1-3 minutes, the sample is taken out and washed till no colors separate out, and moisture of the fiber sample is absorbed; (4) the fiber sample in the step (3) is dipped in the decolorising agent C for 0.5-2 minutes, and moisture in the fiber sample is absorbed and dried; (5) the flows of the step (1)-(4) are repeated to carry out for viscose fiber, and a contrast sample is prepared; (6) the sample in the step (4) and the sample in the step (5) are contrasted, and fiber species can be identified according to color change degrees of the fibers. The method has the advantages of simple operation, low cost and good application prospects.
Description
Technical field
The present invention relates to the detection method of Lyocell fibers and Modal fibre.
Background technology
Regenerated celulose fibre is one of 21 century optimal textile raw material.In recent years, occurring in that numerous New Regenerated Cellulosic Fibers, wherein the exploitation effect of Lyocell fibers, Modal fibre etc. is the most prominent, and is widely used the production in weaving face fabric.
Described Lyocell fibers is the wood pulp based on coniferous tree is raw material, utilizes the regenerated celulose fibre that " solvent-spinning method " is produced；Described Modal fibre is the regenerated celulose fibre of a kind of high wet modulus, and the raw material of this fiber comes from the timber of the Nature, can natural degradation after using.This allows for regenerated celulose fibre and is increasingly becoming the focus that weaving market is paid close attention to, chemical fiber enterprise has released one after another the regenerated celulose fibre of the new ideas such as such as Li Saier, Niu Daier, on market with various regenerated celulose fibres be raw material fabric, clothing also emerge in an endless stream.But having resulted in different regenerated celulose fibre to become to produce cost owing to its production technology is different from material, wearability is different, affects end product quality.
But owing to the molecular structure of regenerated celulose fibre is almost identical, chemical property is close, general chemical reagent is utilized to be difficult to accurately differentiate.At present, testing agency Main Basis FZ/T01057-2007 " textile fabric discrimination test method ", use optical microscopy, observe the form of fiber when low power, distinguish regenerated celulose fibre according to the difference of its form.But, along with market development, various regenerated celulose fibres are weeded out the old and bring forth the new, and the difference that result in they morphological characteristics because of the difference of production firm, processing technique fades away.The Modal fibre that such as Taiwanization produces, its profile is almost consistent with Lyocell fibers, but the performance indications such as degree of crystallinity, ultimate strength, dry and wet modulus are far from each other；And the qualitative identification FZ/T01057 standard between Modal fibre and Lyocell fibers is also without providing a rational method.This allows for traditional profile that relies on cannot meet actually detected demand to the method distinguishing regenerated celulose fibre, also just becomes one of difficult problem of the fiber check and measure mechanism of puzzlement at present.
Summary of the invention
It is an object of the invention to provide the detection method of a kind of Lyocell fibers and Modal fibre, to meet the needs of people.
Lyocell fibers of the present invention and the detection method of Modal fibre, comprise the steps:
(1) coloring agent A, coloring agent B and decolorising agent C are prepared respectively；
(2) fiber sample of about about 0.1g is put in 50ml beaker, add coloring agent A and be about 20ml, use Glass rod to be gently mixed and make sample be completely immersed in solution, impregnate 1 ~ 3 minute, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper；
(3) then the fiber sample of step (2) is put in 50ml beaker, add coloring agent B and be about 20ml, use Glass rod to be gently mixed and make sample be completely immersed in solution, impregnate 1 ~ 3 minute, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper；
(4) again by the fiber sample of step (3), put in 50ml beaker, add decolorising agent C and be about 25ml, using Glass rod to be gently mixed makes sample be completely immersed in solution, impregnate 0.5 ~ 2 minute, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper, then dry under 105 DEG C of conditions about 1 hour；
(5) viscose rayon is repeated the step (1) flow process to step (4), makes contrast sample；
(6) the contrast sample of step (4) sample Yu step (5) is contrasted, according to fiber color intensity of variation, the kind of fiber can be differentiated；
Owing to the colorability of Lyocell fibers is poor, paler colour, change almost without color.Modal fibre is better with viscose rayon colorability, has comparatively significantly color change.
Principles of the invention: utilize the degree of crystallinity of Lyocell fibers than Modal fibre and viscose rayon, it is more difficult to colouring.Make between Lyocell fibers and Modal fibre and viscose rayon, to produce obvious aberration by painted and decolouring process.It is easy for Lyocell fibers and Modal fibre being made a distinction by observing the color distortion of fiber to be measured and standard viscose fibres.
Coloring agent A forming by following component in step (1):
Solution A: crystal violet 6g
Volumetric concentration is the ethanol 60ml of 95%
Second liquid: ammonium oxalate 2.4g
Distilled water 240ml
Preparation method: after finely ground for crystal violet, adds 95% ethanol, so as to dissolve, is made into solution A；
Ammonium oxalate is dissolved in distilled water, is made into second liquid, liquid A and liquid B is mixed, use after standing 36 ~ 50 hours；
In step (1), coloring agent B is made up of following component:
Potassium iodide 2g
Iodine 1g
Distilled water 300ml
Preparation method: first potassium iodide is dissolved in a small amount of distilled water, then iodine is dissolved in liquor kalii iodide, can heat during dissolving, finally supply the distillation water yield；
In step (1), decolorising agent C is made up of following component:
Volumetric concentration is the ethanol 210ml of 95%
Acetone 90ml
Preparation method is simple physical mixed；
The present invention is simple to operate, and cost is low, makes to produce obvious aberration between Lyocell fibers and Modal fibre and viscose rayon by painted and decolouring process.It is easy for Lyocell fibers and Modal fibre being made a distinction by observing the color distortion of fiber to be measured and viscose rayon.Reach the purpose of Lyocell fibers and Modal fibre, have a good application prospect.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
The fiber sample of about about 0.1g is put in 50ml beaker, add coloring agent A and be about 20ml, use Glass rod to be gently mixed and make sample be completely immersed in solution, impregnate 2 ± 1 minutes, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper.
Then this fiber sample is put in 50ml beaker, add coloring agent B and be about 20ml, use Glass rod to be gently mixed and make sample be completely immersed in solution, impregnate 2 ± 1 minutes, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper.
Again by fiber sample, put in 50ml beaker, add decolorising agent C and be about 25ml, using Glass rod to be gently mixed makes sample be completely immersed in solution, impregnate 1.25 ± 0.75 minutes, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper, then dry under 105 DEG C of conditions about 1 hour.
The viscose rayon taking about 0.1g repeats above operating process, makes contrast sample, with viscose rayon contrast sample, fiber sample is carried out cross-sectional slices comparison, according to fiber color intensity of variation, can differentiate the kind of fiber；Almost cannot be colored by contrasting visible Lyocell fibers, only present the purple having a talk, and viscose rayon is easier to be colored, present deeper purple, this allows for Lyocell fibers has obvious aberration with viscose rayon, and Modal fibre is almost consistent with the degree that is colored of viscose rayon, it is easy for Lyocell fibers and Modal fibre being made a distinction by observing the color change of fiber.
Claims (8)
1. the detection method of Lyocell fibers and Modal fibre, it is characterised in that comprise the steps:
(1) coloring agent A, coloring agent B and decolorising agent C are prepared respectively；
(2) fiber sample of about about 0.1g is put in 50ml beaker, add coloring agent A and be about 20ml, use Glass rod stirring to make sample be completely immersed in solution, impregnate 1 ~ 3 minute, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper；
(3) then the fiber sample of step (2) is put in 50ml beaker, add coloring agent B and be about 20ml, use Glass rod stirring to make sample be completely immersed in solution, impregnate 1 ~ 3 minute, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper；
(4) again by the fiber sample of step (3), put in 50ml beaker, add decolorising agent C and be about 25ml, Glass rod stirring is used to make sample be completely immersed in solution, impregnate 0.5 ~ 2 minute, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper, then dry under 105 DEG C of conditions about 1 hour；
(5) viscose rayon is repeated the step (1) flow process to step (4), makes contrast sample；
(6) the contrast sample of step (4) sample Yu step (5) is contrasted, according to fiber color intensity of variation, the kind of fiber can be differentiated.
2. method according to claim 1, it is characterised in that coloring agent A the forming by following component in step (1):
Solution A: crystal violet 6g
Volumetric concentration is the ethanol 60ml of 95%
Second liquid: ammonium oxalate 2.4g
Distilled water 240ml.
3. method according to claim 1, it is characterised in that in step (1), coloring agent B is made up of following component:
Potassium iodide 2g
Iodine 1g
Distilled water 300ml.
4. method according to claim 1, it is characterised in that in step (1), decolorising agent C is made up of following component:
Volumetric concentration is the ethanol 210ml of 95%
Acetone 90ml.
5. the detection method of Lyocell fibers and Modal fibre, it is characterised in that comprise the steps:
(1) coloring agent A, coloring agent B and decolorising agent C are prepared respectively；
(2) fiber sample is impregnated 1 ~ 3 minute in coloring agent A, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper；
(3) then the fiber sample of step (2) is impregnated 1 ~ 3 minute in coloring agent B, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper；
(4) again the fiber sample of step (3) is impregnated 0.5 ~ 2 minute in decolorising agent C, take out sample, be washed with water to and precipitate out without color, suck the moisture of fiber sample with absorbent paper, then dry under 105 DEG C of conditions；
(5) viscose rayon is repeated the step (1) flow process to step (4), makes contrast sample；
(6) the contrast sample of step (4) sample Yu step (5) is contrasted, according to fiber color intensity of variation, the kind of fiber can be differentiated.
6. method according to claim 5, it is characterised in that coloring agent A the forming by following component in step (1):
Solution A: crystal violet 6g
Volumetric concentration is the ethanol 60ml of 95%
Second liquid: ammonium oxalate 2.4g
Distilled water 240ml.
7. method according to claim 5, it is characterised in that in step (1), coloring agent B is made up of following component:
Potassium iodide 2g
Iodine 1g
Distilled water 300ml.
8. method according to claim 5, it is characterised in that in step (1), decolorising agent C is made up of following component:
Volumetric concentration is the ethanol 210ml of 95%
Acetone 90ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763810.2A CN105758804A (en) | 2014-12-15 | 2014-12-15 | Detection method of Lyocell fiber and modal fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763810.2A CN105758804A (en) | 2014-12-15 | 2014-12-15 | Detection method of Lyocell fiber and modal fiber |
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| CN105758804A true CN105758804A (en) | 2016-07-13 |
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| CN201410763810.2A Pending CN105758804A (en) | 2014-12-15 | 2014-12-15 | Detection method of Lyocell fiber and modal fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345319A (en) * | 2017-06-15 | 2017-11-14 | 佛山市南海德耀纺织实业有限公司 | The preparation method of fiber with yarn identification function and recognition methods |
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| CN101650352A (en) * | 2009-09-10 | 2010-02-17 | 绍兴文理学院元培学院 | Method for testing bi-component fabric component |
| CN102426147A (en) * | 2011-09-08 | 2012-04-25 | 上海工程技术大学 | Method for distinguishing Lyocell bamboo fiber in blending product |
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2014
- 2014-12-15 CN CN201410763810.2A patent/CN105758804A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650352A (en) * | 2009-09-10 | 2010-02-17 | 绍兴文理学院元培学院 | Method for testing bi-component fabric component |
| CN102426147A (en) * | 2011-09-08 | 2012-04-25 | 上海工程技术大学 | Method for distinguishing Lyocell bamboo fiber in blending product |
Non-Patent Citations (3)
| Title |
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| 凌启波: "《实用病理特殊染色和组化技术》", 31 July 1989 * |
| 杨元: "几种新型再生纤维及其鉴别方法", 《现代纺织技术》 * |
| 费国平 等: "竹原纤维和竹浆纤维鉴别方法的研究", 《中国纤检》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345319A (en) * | 2017-06-15 | 2017-11-14 | 佛山市南海德耀纺织实业有限公司 | The preparation method of fiber with yarn identification function and recognition methods |
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Application publication date: 20160713 |