CN103278359B - Quantitative chemical analysis method of cotton ammonia blended product - Google Patents
Quantitative chemical analysis method of cotton ammonia blended product Download PDFInfo
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- CN103278359B CN103278359B CN201310176452.0A CN201310176452A CN103278359B CN 103278359 B CN103278359 B CN 103278359B CN 201310176452 A CN201310176452 A CN 201310176452A CN 103278359 B CN103278359 B CN 103278359B
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Abstract
The invention relates to a quantitative chemical analysis method of a cotton ammonia blended product. The quantitative chemical analysis method is characterized by comprising the following steps of: treating the cotton ammonia blended product by adopting a sulfuric acid solution with a certain concentration, wherein the treatment conditions are as follows: sulfuric acid solution concentration is 30%-50%, treatment temperature is 80 DEG C-95 DEG C, treatment time is 10 minutes-30 minutes, oscillation frequency is 50 revolutions/minute-250 revolutions/minute and a bath ratio is 1:100; and carrying out a test step, wherein the cotton fiber in the test sample is decomposed after the test sample is treated by the sulfuric acid solution, so that the cotton fiber in the test sample is removed, the residual spandex of the test sample is collected, and the content of the fiber component in the cotton ammonia blended product is obtained by calculation. The chemical analysis method-sulfuric acid method disclosed by the invention is adopted, so that the test can be quickly carried out in a large-scale manner, and the content of the spandex in the cotton ammonia blended fabric can be timely detected. Compared with a manual splitting method, the working efficiency is greatly improved, the working time is saved, and the spandex content test precision in the cotton ammonia blended product is improved.
Description
Technical field
The present invention relates to a kind of cotton ammonia blending product method for carrying out quantitative chemical analysis.
Background technology
Cotton ammonia blending product is a kind of modal blending product, the quantitative test of product composition is an important content of Product checking, compared with other blending product, the quantitative test of cotton ammonia blending product has certain singularity, namely in cotton ammonia blending product, spandex content is lower, and the overwhelming majority is between 5-10%.
The current testing standard for the quantitative test of cotton ammonia blending product comprises: FZ/T 01095-2002 " test method of spandex product fiber content " and GB/T 2910.20-2009 " textile quantitative chemical analysis the 20th part: the potpourri (dimethyl acetamide method) of polyurethane elastomeric fiber and some other fiber ".
FZ/T 01095 gives the quantitative analysis method of two kinds of cotton ammonia blending products: manual decomposition method and chemical dissolution method (dimethyl formamide method), for manual decomposition method, test result is accurate, inefficiency, can only individual sample process, waste a large amount of manpower, and the product had cannot carry out manual decomposition because institutional framework is too fine and close; For chemical dissolution method (dimethyl formamide method), chemical reagent dimethyl formamide, to damage cotton in cotton ammonia blending product, is not as described in FZ/T 01095, and cotton correction factor d value is 1.00.There are some researches show, along with cotton like state in cotton ammonia blending product is different, different dyeing conditions, different to the damage of cotton, cotton correction factor d value in dimethyl formamide fluctuates between 1.00-1.03.Because content cotton in cotton ammonia blending product is generally between 90-95%, the impact that different correction factor d values produces the cotton content results of cotton ammonia blending product is between 2-3%, cause spandex content deviation between 2-3%, and the content of spandex originally in blending product is between 5-10%, just determine the impact of this deviation beyond acceptable scope (within 1%), therefore the detection numerical value of chemical dissolution method (dimethyl formamide method) is undesirable.
GB/T 2910.20 gives another kind of cotton ammonia blending product method for carrying out quantitative chemical analysis: dimethyl acetamide method.Chemical reagent dimethyl acetamide is to damage cotton in cotton ammonia blend fabric, be not as described in GB/T 2910.20, cotton correction d value is 1.00, the same with dimethyl formamide, cotton correction factor d value fluctuates between 1.00-1.03, and therefore the detection numerical value of chemical dissolution method (dimethyl acetamide method) is undesirable equally.
Prior art GB/T2910.11 " textile quantitative chemical analysis " the 11st part: in the potpourri (sulfuric acid process) of cellulose fibre and dacron, adopt sulfuric acid dissolution cellulose fibre, its sulfuric acid concentration is 73%-77%, solution temperature is 50 DEG C ± 5 DEG C, adopts the method process textile, cellulose fibre is dissolved completely, dacron is retained, adopt the cotton ammonia blending product of this condition process, the two all can dissolve completely, can not play the effect of separation.FZ/T 01057.4 " textile fibres discrimination test method " the 4th part: show in dissolution method, cotton and spandex are at 70% sulfuric acid, dissolve at 24-30 DEG C, insoluble at 40%% sulfuric acid 24-30 DEG C, be under boiling conditions and be partly dissolved, the technology enlightenment provided from prior art is the quantitative test that sulfuric acid process can not be used for cotton ammonia blending product.But applicant finds: under sulfuric acid solution concentration 30-50%, treatment temperature 80-95 DEG C condition, the cotton in cotton ammonia blend fabric is decomposed, and can be easy to peel off from blend fabric come off, and spandex is influenced hardly.The present invention at the process conditions, adopts sulfuric acid treatment, makes cotton decomposition, retains spandex fibre, broken the conventional cognitive of people, simple to operate, deviation is little.
Adopt chemical analysis method-sulfuric acid process of the present invention, can test by quick, a large amount of carrying out, detect the content of spandex in cotton ammonia blend fabric timely and accurately, compared with manual Split Method, substantially increase work efficiency, saved man-hour, compared with other two kinds of chemical dissolution methods (dimethyl formamide method and dimethyl acetamide method), the spandex content measuring accuracy in cotton ammonia blending product improves.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of simple to operate, cotton ammonia blending product method for carrying out quantitative chemical analysis that deviation is little is provided.
The object of the present invention is achieved like this:
A kind of cotton ammonia blending product method for carrying out quantitative chemical analysis, described method adopts chemical reagent: sulfuric acid processes; Treatment conditions are: sulfuric acid solution concentration 30-50%, treatment temperature 80-95 DEG C, processing time 10-30min, oscillation frequency 50-250 turn/min, bath raio 1:100; Test procedure: sample is after persulfate solution process, in sample, cotton fiber decomposes, remove cotton fiber in sample, collect sample residue spandex, the correction factor d value of spandex between 1.00-1.03, different correction factor d values on the resultant impact of cotton ammonia blending product spandex content within 0.5%.
Concrete grammar comprises the steps:
(1). sampling: for yarn, get the sample of two parts of about 1g, for fabric, get the sample of two parts of length and width 5cm;
(2). sulfuric acid solution is prepared: get a certain amount of concentrated sulphuric acid (1.84g/ml), add in a certain amount of water, be mixed with the sulfuric acid solution of finite concentration (30-50%);
(3). oven dry is carried out to sample and weighs, obtain the clean dry mass m of sample
0;
(4). processing scheme: sulfuric acid solution concentration 30-50%, treatment temperature 80-95 DEG C, processing time 10-30min, oscillation frequency 50-250 turn/min, bath raio 1:100;
(5). sample is after above-mentioned handling procedure, and in sample, cotton fiber decomposes, and removes the cotton fiber in sample, and collect the remaining spandex of sample, oven dry is weighed, and obtains the quality m of spandex in sample
1;
(6). calculate the fibrous fraction content of cotton ammonia blending product.
Computing formula is as follows:
In formula:
The clean dry mass mark of spandex in P--sample, %;
M
0-samples dried quality, unit is g;
M
1-spandex dry mass, unit is g;
D-spandex correction factor, d value between 1.00-1.03, black spandex d value 1.03, other spandex d value 1.00.
Compared with prior art, the invention has the beneficial effects as follows:
Embodiment
Below by embodiment, present invention will be further described, but be not limited to lifted embodiment:
Battery of tests:
Cotton ammonia blend fabric standard value: cotton 95.0 ± 5.0%, spandex 5.0 ± 1.5%;
Embodiment 1:
Adopting the present invention's cotton ammonia blending product method for carrying out quantitative chemical analysis--sulfuric acid process carries out Treatment Analysis, processing scheme: sulfuric acid solution concentration 30-50%, treatment temperature 80-95 DEG C, processing time 10-30min, oscillation frequency 50-250 turn/min, bath raio 1:100, sample is after persulfate solution process, in sample, cotton fiber decomposes, remove cotton fiber in sample, collect sample residue spandex, calculate sample fiber content: cotton 95.2%, spandex 4.8%, with standard value deviation ± 0.2%.
The manual Split Method of comparative example 1--, obtain sample fiber content: cotton 95.4%, spandex 4.6%, with standard value deviation ± 0.4%.
Comparative example 2--chemical dissolution method, FZ/T 01095 dimethyl formamide method, obtains sample fiber content: cotton 93.2%, and spandex 6.8%, with standard value deviation ± 1.8%;
Comparative example 3--chemical dissolution method, GB/T 2910.20 dimethyl acetamide, obtains sample fiber content: cotton 93.4%, and spandex 6.6%, with standard value deviation ± 1.6%.
Second group of test:
Cotton ammonia blend fabric standard value: cotton 92.0 ± 5.0%, spandex 8.0 ± 2.4%;
Embodiment 2:
Sulfuric acid process of the present invention is adopted to carry out Treatment Analysis, processing scheme: sulfuric acid solution concentration 30-45%, treatment temperature 80-95 DEG C, processing time 10-30min, oscillation frequency 50-250 turn/min, bath raio 1:100, obtain sample fiber content: cotton 92.2%, spandex 7.8%, with standard value deviation ± 0.2%.
The manual Split Method of comparative example 4--, obtain sample fiber content: cotton 92.3%, spandex 7.7%, with standard value deviation ± 0.3%.
Comparative example 5--chemical dissolution method, FZ/T 01095 dimethyl formamide method, obtains sample fiber content: cotton 95.6%, and spandex 4.4%, with standard value deviation ± 3.6%.
Comparative example 6--chemical dissolution method, GB/T 2910.20 dimethyl acetamide, obtains sample fiber content: cotton 95.8%, and spandex 4.2%, with standard value deviation ± 3.8%.
As can be seen from test findings, adopt the present invention's cotton ammonia blending product method for carrying out quantitative chemical analysis-sulfuric acid process, carry out Treatment Analysis, the spandex content result that test obtains is close to spandex actual content in cotton ammonia blending product, deviation, within 0.5%, meets fiber content accuracy of detection and requires (± 1.0%).Adopt chemical analysis method-sulfuric acid process, can test by quick, a large amount of carrying out, detect the content of spandex in cotton ammonia blend fabric timely and accurately, compared with manual Split Method, substantially increase work efficiency, saved man-hour, as compared to other two kinds of chemical dissolution methods (dimethyl formamide method and dimethyl acetamide method), the spandex content measuring accuracy in cotton ammonia blending product has brought up to 0.5% from 3%.
Claims (2)
1. a cotton ammonia blending product method for carrying out quantitative chemical analysis, is characterized in that: described method adopts finite concentration sulfuric acid solution to process cotton ammonia blending product test; Treatment conditions are: described sulfuric acid solution concentration 30-50%, treatment temperature 80-95 DEG C, processing time 10-30min, oscillation frequency 50-250 turn/min, bath raio 1:100; Test procedure: sample is after persulfate solution process, and in sample, cotton fiber decomposes, and removes cotton fiber in sample, collects sample residue spandex, calculates the fibrous fraction content of cotton ammonia blending product;
Computing formula is as follows:
In formula:
The clean dry mass mark of spandex in P--sample, %;
M
0-samples dried quality, unit is g;
M
1-spandex dry mass, unit is g;
D-spandex correction factor;
Wherein, black spandex d value 1.03, other spandex d value 1.00.
2. one according to claim 1 cotton ammonia blending product method for carrying out quantitative chemical analysis, is characterized in that, described method comprises the steps:
(1). sampling sample;
(2). sulfuric acid solution is prepared: get a certain amount of concentrated sulphuric acid, add in a certain amount of water, be mixed with the sulfuric acid solution of finite concentration 30-50%;
(3). oven dry is carried out to sample and weighs, obtain the clean dry mass m of sample
0;
(4). processing scheme: sulfuric acid solution concentration 30-50%, treatment temperature 80-95 DEG C, processing time 10-30min, oscillation frequency 50-250 turn/min, bath raio 1:100;
(5). sample is after above-mentioned handling procedure, and in sample, cotton fiber decomposes, and removes the cotton fiber in sample, and collect the remaining spandex of sample, oven dry is weighed, and obtains the quality m of spandex in sample
1;
(6). calculate the fibrous fraction content of cotton ammonia blending product.
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| CN103983484A (en) * | 2014-02-07 | 2014-08-13 | 五邑大学 | Centrifugation quantitative analysis method for two-composition blended textiles |
| CN104195809A (en) * | 2014-08-08 | 2014-12-10 | 上海嘉麟杰纺织品股份有限公司 | Method for testing components of common polyester/modified polyester interwoven fabric in quantitative mode |
| CN104931322B (en) * | 2015-07-01 | 2016-06-29 | 必维申优质量技术服务江苏有限公司 | A kind of quantitative analysis method of cotton and viscose blend fabric |
| 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 |
| CN110618057A (en) * | 2019-10-29 | 2019-12-27 | 东莞市中鼎检测技术有限公司 | Method for detecting content of spandex and viscose in spandex and viscose blended fabric |
| CN111621059A (en) * | 2020-05-26 | 2020-09-04 | 苏州中纺学面料产业研究院 | Separation and recovery method of polyimide and blended textile thereof |
| CN113252498A (en) * | 2021-05-17 | 2021-08-13 | 中纺协东莞检验技术服务有限公司 | Chemical quantitative test method for glucose bionic fiber and spandex |
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| CN102621031A (en) * | 2012-04-18 | 2012-08-01 | 上海市毛麻纺织科学技术研究所 | Method for quantitatively detecting content of each component in mixture of polyester fiber and polypropylene fiber |
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Effective date of registration: 20210629 Address after: No. 188, East Outer Ring Road, Jiangyin high tech Zone, Wuxi City, Jiangsu Province Patentee after: Jiangsu Chengxin Inspection Certification Co.,Ltd. Address before: No. 188, East Outer Ring Road, Jiangyin City, Wuxi City, Jiangsu Province Patentee before: JIANGSU JIANGYIN FIBRES TESTING INSTITUTE |
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Address after: No. 188, East Outer Ring Road, Jiangyin high tech Zone, Wuxi City, Jiangsu Province Patentee after: Jiangsu Chengxin Inspection, Testing and Certification Co.,Ltd. Address before: No. 188, East Outer Ring Road, Jiangyin high tech Zone, Wuxi City, Jiangsu Province Patentee before: Jiangsu Chengxin Inspection Certification Co.,Ltd. |