CN104931322B - A kind of quantitative analysis method of cotton and viscose blend fabric - Google Patents
A kind of quantitative analysis method of cotton and viscose blend fabric Download PDFInfo
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- CN104931322B CN104931322B CN201510377383.9A CN201510377383A CN104931322B CN 104931322 B CN104931322 B CN 104931322B CN 201510377383 A CN201510377383 A CN 201510377383A CN 104931322 B CN104931322 B CN 104931322B
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Abstract
The invention discloses the quantitative analysis method of a kind of cotton and viscose blend fabric, it is characterised in that comprise the steps of: step (1) is chosen laboratory sample and carries out pretreatment；Step (2) adopts 5% liquor natrii hypochloritis that the sample through pretreatment is carried out fade treatment, and fading time is 20min-30min, and method of fading is for vibrate at normal temperatures；Step (3) adopts 70 DEG C of methods of formic acid/zinc chloride or 59.5% sulfuric acid process that the sample doing fade treatment is carried out quantitative analysis.The quantitative analysis method of the present invention, take into full account that fade solvent and fading time are as the key factor impact on fading effect, make whole experimental technique first after method of effectively fading is faded, analyze quantitative data again, method is simple and efficient, highly sensitive, result is accurate, economical and efficient and be prone to promote the use of at laboratory monitoring, it is possible to be well applied to the detection by quantitative of the cotton viscose glue of dark cotton viscose blended fabric.
Description
Technical field
The present invention relates to field of textiles, particularly relate to the quantitative analysis method of a kind of cotton and viscose blend fabric.
Background technology
Textile fabric kind and content thereof are one of critically important contents of mark textile quality, and Ye Shi consumer to buy focus during textile.Finding in market survey, in current China market, the fabric of some products of sale, lining and implant and content and reality thereof are not inconsistent, and so consumer and whole market can be produced deleterious effect.So country is very strict to this regulation, and carrying out a up-to-date state compulsion standard GB18401-2003, its enforcement is not only suitable for the trend of state's weaving development in the present age, also helps China's textile and elevates international status.
The intertexture blended yarn weaved fabric of multiple fiber and cotton fiber, make to have complementary advantages between each fiber, not only retain the advantage such as original soft, ventilative, the absorbing sweat of cotton fiber, and impart the features such as fabric is elastic, indeformable, wrinkle resistant, make cotton spinning fabric have higher quality.Viscose rayon is similar to the chemical property of cotton fiber, alkaline-resisting not acidproof, but acid and alkali-resistance is all worse than cotton, and the dyeability of same viscose rayon is similar to cotton, and dyeing chromatograph is complete, and dyeability is good.Thermosol character and density are all close with cotton, but its is wet strong not as cotton fiber.And the spinnability of cotton fiber, it is good that drapability is all not so good as viscose glue.Viscose rayon and cotton fiber blending can make up the deficiency of both sides, and can give full play to himself advantage.Viscous fine and cotton blended textile is generally adopted the cotton of 60%, the viscous fibre of 40%, and this kind fabric has wear-resisting, intensity higher than viscous fine fabric, good hygroscopicity in pure cotton cloth, the wet strong bright and clean feature less, soft that declines.
For the mixture of regenerated celulose fibre Yu cotton fiber, in detection, the main chemical method used is the formic acid/zinc chloride process in GB/T2910.6 2009 at present.But testing staff finds when carrying out quantitative analysis by formic acid zinc chloride process, often there will be the situation that regenerated celulose fibre can not thoroughly dissolve, dark product becomes apparent from.And clear stipulaties in GB/T2910.6 2009 " textile quantitative chemical analysis the 6th part: viscose glue or CUP or Modal fibre or Lyocell fibers and cotton fiber mixture (formic acid/zinc chloride process) ": when the viscose rayon in mixture, CUP, Lyocell fibers or Modal fibre exist reactive dye, when causing these fibers not to be completely dissolved, inapplicable this standard.Therefore all the time, cotton and regenerated celulose fibre blending product quantitative approach and experimental condition all receive much concern.The foreign capitals testing agency such as SGS attempts the method that have employed in AATCC20A-2011 in recent years, it is said achieving good effect, but for deep-colour fabric, equally exists the problems referred to above.GB and American Standard regenerated celulose fibre compare with the blending product method of testing of cotton fiber sees accompanying drawing 1.
Therefore so far, blended yarn weaved fabric for the cotton of some dark colors and viscose glue, present industry does not have good chemolysis method of testing can quantify cotton and viscose glue ratio very accurately, in operation, laboratory is still difficult to quantify cotton and viscose glue ratio exactly, although everybody can adopt various method to fade now, but clearly do not adopt which kind of decolourant relatively good, how long relatively good fade, also cotton and viscose rayon can be damaged because fading, so the time controls extremely important, not so test result has very big-difference, urgently find speed fast in industry, the standardized method that degree of accuracy is high processes this problem.
Current economy, information globalization overall background under, domestic and international fiber content detection method carried out laterally, longitudinal go deep into comparative study, and be applied, tool is of great significance.Technical method in standard is the integrated of advanced technology, also it is guiding and the core data of new technique, new technology and new product development, fiber content testing staff for China, pass through research standard, contrast various countries detection method, learn wildly from other's strong points, find out the quickest, most effective, can reflect that the test method that textile real content forms is used, the beyond doubt shortcut of a fast lifting own strength.
In international trade, technical standard is also a kind of game rule, and the competition of standard is prior to product competition, and adoption of international standard and advanced oversea standard is the pass that product enters international market.The exporting of developing country is obstructed, undeveloped mainly due to information system, the various technical limitations of importer is known few, relevant in trade standard, regulation, it is difficult to collect, or lack latest edition, affect conclusion of the business chance adversely.Hence set up the early warning mechanism of a set of anti-technology standard barrier, collect, follow the tracks of and translation foreign standard information, strengthen to developed country and the technical standard of China principal trade partner country, policy, the relevant content such as regulation research, accomplish " knowing yourself as well as the enemy ", ability " you can fight a hundred battles with no danger of defeat ".
Summary of the invention
In order to make up the blank and deficiency existed in prior art, the invention provides the quantitative analysis method of a kind of simple and efficient, highly sensitive cotton and viscose blend fabric.
For realizing above-mentioned technical purpose, concrete technical scheme is as follows:
The quantitative analysis method of a kind of cotton and viscose blend fabric, it is characterised in that comprise the steps of:
Step (1), choosing laboratory sample and carry out pretreatment, described sampling standard and pretreatment all perform according to the textile inspection respective standard of national regulation, and sampling is about 1G, have the needs of circulation to go circulation, and color depth is black；
Step (2), adopting 5% liquor natrii hypochloritis that the sample through pretreatment is carried out fade treatment, fading time is 20min-30min, and method of fading is for vibrate at normal temperatures；More preferably, selecting fading time is 25min.
The sample doing fade treatment is carried out quantitative analysis by step (3), employing 70 DEG C of methods of formic acid/zinc chloride or 59.5% sulfuric acid process.Wherein, it is clean that 70 DEG C of methods of formic acid/zinc chloride are dissolved, but requirement is more accurate, and has the toxicity of trace.59.5% sulfuric acid process is dissolved pole individual samples and be there will be the sordid situation of dissolving, time specifically chosen, it is possible to consider.
As preferably, in step (2), adopting 5% sodium hydroxide solution to replace 5% liquor natrii hypochloritis that pretreated sample is carried out fade treatment, fading time is at 2min-3min, and method of fading is faded for boiling；More preferably, selecting fading time is 2.5min.
The present invention is relative to the advantage of prior art and has the beneficial effect that
Detection method is by selecting type of solvent of fading, and discoloring condition has been carried out largest optimization, carries out quantitative analysis in conjunction with conventional method, establish quantitative analysis method of the present invention after having carried out the fading of optimum.The quantitative analysis method of the present invention, take into full account that fade solvent and fading time are as the key factor impact on fading effect, make whole experimental technique first after method of effectively fading is faded, analyze quantitative data again, cotton and viscose glue proportion of fibers can be accurately tested out when ensure that method of accurately effectively fading in conjunction with normal quantitative analysis method, make laboratory when quantitatively dark cotton viscose blended fabric, it is thus achieved that abundant reliable examination criteria.
Detection method is simple and efficient, highly sensitive, result is accurate, economical and efficient and be prone to promote the use of at laboratory monitoring, it is possible to be well applied to the detection by quantitative of the cotton viscose glue of dark cotton viscose blended fabric.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the blending product method of testing comparison diagram of GB and American Standard regenerated celulose fibre and cotton fiber in background technology.
Detailed description of the invention
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
This specification (include any accessory claim, summary and accompanying drawing) disclosed in any feature, unless specifically stated otherwise, all can by other equivalences or there is the alternative features of similar purpose replaced.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Embodiment 15% sodium hypochlorite Fading Spectrophotometic Method
Sodium hypochlorite Fading Spectrophotometic Method: room temperature, vibration
5min, 10min color of fading is not all of fading away, and after quantitatively dissolving, can also find a little viscose glue under the microscope, and viscose glue is not completely dissolved, and cotton ratio is higher.
Fade 20min, 30min time, black all fades away, and fabric is shown as brown, after quantitatively dissolving, has not found adhesive residue under the microscope, it was shown that viscose glue is completely dissolved, has also been more or less the same with standard proportional and microscope test method results said before.
Fade 60min time, color all fades away, but cotton is very scattered, after quantitatively dissolving, discovery is not had to have viscose rayon to remain, but the ratio of cotton is on the low side, thinking that fading time is oversize, liquor natrii hypochloritis has damaged cotton fiber, after vibrating then through 59.5% sulphuric acid or formic acid liquor zinci chloridi, cotton fiber damage is bigger, so end product shows, cotton ratio is on the low side.
Embodiment 25% sodium hydroxide solution Fading Spectrophotometic Method
5% sodium hydroxide solution Fading Spectrophotometic Method: boil and fade
Fade 1min time, black does not fade away completely, after quantitatively dissolving, can also find a little viscose glue under the microscope, and viscose glue is not completely dissolved, and cotton ratio is higher.
Fade 2min, 3min time, black all fades away, and after quantitatively dissolving, has not found adhesive residue under the microscope, it was shown that viscose glue is completely dissolved, and is also more or less the same with standard proportional.
Fade 4min, and fade 5min, and it is more that color fades away, after quantitatively dissolving, it does not have viscose rayon remains, but cotton fiber ratio is on the low side, because cotton fiber also can damage in the sodium hydroxide solution boiled, causes that quantitative result is inaccurate.
Embodiment 3 alkalescence sodium hydrosulfite Fading Spectrophotometic Method
Alkalescence sodium hydrosulfite fades, and the damage of cotton fiber is relatively larger, and experimental result differs too big with standard proportional, the method poor effect is described, therefore advises, generally do not adopt this method of fading.
To sum up three embodiments can draw, 5% sodium hypochlorite Fading Spectrophotometic Method and the 5% sodium hydroxide solution more alkaline sodium hydrosulfite that fades fades method excellence；And when adopting 5% liquor natrii hypochloritis to fade, fading time is selected best in 20min-30min effect；When adopting 5% sodium hydroxide solution to fade, fading time is selected best in 2min-3min effect.
Detection method is simple and efficient, highly sensitive, economical and efficient and be prone to promote the use of at laboratory monitoring, it is possible to be well applied to the detection by quantitative of the cotton viscose glue of dark cotton viscose blended fabric.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any new feature disclosed in this manual or any new combination, and the step of the arbitrary new method disclosed or process or any new combination.
Claims (2)
1. the quantitative analysis method of a cotton and viscose blend fabric, it is characterised in that comprise the steps of:
Step (1), choose laboratory sample and carry out pretreatment；
Step (2), adopting 5% sodium hydroxide solution that pretreated sample is carried out fade treatment, fading time is at 2min-3min, and method of fading is faded for boiling；
The sample doing fade treatment is carried out quantitative analysis by step (3), employing 70 DEG C of methods of formic acid/zinc chloride or 59.5% sulfuric acid process.
2. the quantitative analysis method of cotton according to claim 1 and viscose blend fabric, it is characterised in that described fading time is 2.5min.
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| CN108872002A (en) * | 2017-05-08 | 2018-11-23 | 谱尼测试集团上海有限公司 | A method of spandex in measurement spandex and cellulosic fibre blend knitting product |
| CN109142125A (en) * | 2018-08-30 | 2019-01-04 | 必维申优质量技术服务江苏有限公司 | The quantitative analysis method of viscose rayon and spandex blended yarn weaved fabric |
| CN110804855A (en) * | 2019-11-21 | 2020-02-18 | 江苏联发纺织股份有限公司 | Efficient stripping method for waste cotton textiles |
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| CN103278359A (en) * | 2013-05-14 | 2013-09-04 | 江阴市纤维检验所 | Quantitative chemical analysis method of cotton ammonia blended product |
| CN104532624A (en) * | 2014-12-10 | 2015-04-22 | 青岛无为保温材料有限公司 | Fabric decoloring method |
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| CN103278359A (en) * | 2013-05-14 | 2013-09-04 | 江阴市纤维检验所 | Quantitative chemical analysis method of cotton ammonia blended product |
| CN104532624A (en) * | 2014-12-10 | 2015-04-22 | 青岛无为保温材料有限公司 | Fabric decoloring method |
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| 再生纤维素纤维与棉混纺产品的定量分析方法探讨;郑少琼;《轻纺工业与技术》;20120228;第41卷(第2期);第21-22，37页 * |
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