CN1789977A - Method for testing flax/cotton blending ratio - Google Patents
Method for testing flax/cotton blending ratio Download PDFInfo
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- CN1789977A CN1789977A CNA2005100455277A CN200510045527A CN1789977A CN 1789977 A CN1789977 A CN 1789977A CN A2005100455277 A CNA2005100455277 A CN A2005100455277A CN 200510045527 A CN200510045527 A CN 200510045527A CN 1789977 A CN1789977 A CN 1789977A
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Abstract
The invention discloses a flax-to-cotton blending ratio detecting method, which is characterized by the following: selecting the detected blending ration flax and cotton specimen; detecting the absorption value Aa of cotton solution, Ab of flax solution and A of known blending ratio solution; putting these absorption values in the Lazuli formula to count the alpha value of flax-to-cotton mixture; putting the sample mixture in the sulfuric solution; filtering and cooling the solution and to detect the absorption value A; calculating the blending ratio Fa of cotton fiber through Lazuli formula.
Description
Technical field
The present invention relates to the textile testing technical field, is the method for testing of a kind of fiber crops/cotton blending ratio specifically.
Background technology
Because fiber crops and cotton all belong to native cellulose fibre, its chemical property is comparatively approaching, and therefore, traditional dissolution method and hydrometer method just can not use.Present most widely used method of testing or microscopic method.That is, with the film-making of fiber simple stage property, go out the radical of flaxen fiber at the microscopically number, diameter and the proportion according to two kinds of fibers calculates blending ratio again.This method has been listed industry standard in, has solved the numb cotton content quantitative problem analysis in the present work, but still has had the following disadvantages:
(1) workload is big.Need to survey hundreds of root even thousands of fibers, can make eye fatigue and produce error.
(2) distinguish fiber according to fibre morphology, be subject to the influence of subjective factor, the personnel that need higher professional standards operate.
(3) because this method has been ignored the middle cavity configuration of fiber, and regard fiber as cylindric, thereby method itself exists than mistake also.
Therefore, how to provide that a kind of operation is simpler, the more accurate method of testing the blending ratio of fiber crops/bafta of test result has become the technical matters that present textile testing industry needs to be resolved hurrily.
Summary of the invention
The objective of the invention is to provide at the deficiency of existing method a kind of simple to operate, accurate test result is numb/method of testing of cotton blending ratio.
The objective of the invention is to be achieved through the following technical solutions: the method for testing of a kind of fiber crops/cotton blending ratio is characterized in that: testing procedure is as follows:
(1) selection needs fiber crops, the cotton variety of the fiber crops/cotton potpourri of mensuration blending ratio, the light absorption value A of the fiber crops/cotton potpourri lysate of the light absorption value Aa of test cotton fiber lysate, the light absorption value Ab of flaxen fiber lysate and known mixing ratio, light absorption value A with the fiber crops/cotton potpourri of cotton, numb light absorption value Aa, Ab and known mixing ratio, bring in the Raspberry formula, obtain the α value of this fiber crops/cotton potpourri;
(2) from the fiber crops/cotton potpourri of needs mensuration blending ratio, take a sample,, and handle and remove impurity and slurry, dry by the fire, be put in the sulfuric acid solution and handle, and evenly shake to over dry with its potpourri garnetting; With the liquid filtering after handling, filtrate is dried in the air after the cold, the light absorption value A of test liquid;
(3) then, according to above test data, calculate the blending ratio Fa of cotton fiber by Raspberry formula, formula is as follows:
In the formula: A---the light absorption value of fiber crops/cotton potpourri lysate;
Aa---the light absorption value of cotton fiber lysate;
Ab---the light absorption value of flaxen fiber lysate;
The blending rate of Fa---cotton fiber;
α---coefficient needs test to determine;
In above-mentioned method of testing,, all identical to the dissolution process condition of all cottons, fiber crops and fiber crops/cotton potpourri sample for the test light absorption value.
In above-mentioned method of testing, dry by the fire to cotton numb or numb/cotton potpourri of over dry be that 55%-65%, temperature are to handle in 42 ℃-48 ℃ the sulfuric acid solution in concentration, processing time is 25-35 minute, liquid after the processing is poured in the sintered glass funnel of oven dry and is filtered, and filtrate is to flow into the cold of drying in the air in the clean beaker.
In above-mentioned method of testing, dry by the fire to cotton numb or numb/cotton potpourri of over dry dry by the fire to the sample of over dry be 60% in concentration, temperature is to be treated to goodly in 45 ℃ the sulfuric acid solution, 30 minutes processing times were advisable.
The present invention compared with prior art has many advantages and good effect:
1, the present invention is according to physical property difference cotton, that the big molecules align difference of fiber crops causes, and as water absorptivity, crystallinity difference, its dissolution velocity is just different in certain acid solution.Like this, under certain conditions, the cotton at the appointed time acid solubility with fiber crops is just different.According to this phenomenon, test the numb cotton variety of blending ratio as required, under identical conditions, dissolve, measure light absorption value Aa, the Ab of cotton, fiber crops and the light absorption value of the fiber crops/cotton potpourri of known mixing ratio, obtain the α value of the numb cotton variety that needs the test blending ratio according to Raspberry formula earlier.Under identical conditions, will need to test the numb cotton potpourri dissolving of blending ratio again, measure the light absorption value A of the numb cotton potpourri that needs the test blending ratio,, both can obtain the Cotton and Hemp blending ratio according to the relational expression between light absorption value and the fiber blend ratio.Test result degree of accuracy of the present invention is higher, and absolute error can be less than 1%.
2, method of testing of the present invention has big, the representative strong advantage of sampling capacity.Use microscopic method, primary sample has only the hundreds of root, over thousands of at most only.And can reach 1-2g even more with the inventive method sampling amount, and, can make a plurality of samples simultaneously, can avoid sampling error.
3, method of testing of the present invention is simple to operate, mainly uses instrument test, has avoided operator's level professional technology and skill level is low and eye fatigue caused error.
4, method of testing of the present invention can be used for the fiber crops/cotton potpourri of different cultivars.
Embodiment
The present invention is according to the theory of " when binary substance dissolved in same solution, there was certain relation in its concentration " in the uncle of Lars, and the concentration of ordinary dissolution of numb cotton fiber in same solution should be certain, also meets in the uncle of Lars theoretical.The light absorption value of fiber crops cotton fiber solution also should meet Raspberry formula.
The method of testing of a kind of fiber crops/cotton blending ratio, concrete testing procedure is as follows:
(1) selection needs fiber crops, the cotton variety of the fiber crops/cotton potpourri of mensuration blending ratio, light absorption value Aa, the light absorption value Ab of flaxen fiber lysate of test cotton fiber lysate and the light absorption value A of fiber crops/cotton potpourri lysate that known mixing ratio is Fa, light absorption value A with the fiber crops/cotton potpourri of cotton, numb light absorption value Aa, Ab and known mixing ratio, bring Raspberry formula into:
Obtain the α value of this fiber crops/cotton potpourri; In above-mentioned method of testing,, different α values is arranged for different fiber crops, cotton fiber.
(2) from the fiber crops/cotton potpourri of needs mensuration blending ratio, get the 1-2g sample, with its potpourri sample garnetting, and handle and remove impurity and slurry, dry by the fire to over dry, being put into concentration is that 55%-65% (is good with 60%), temperature are the interior processing of sulfuric acid solution of 42 ℃-48 ℃ (are good with 45 ℃) and evenly shake that the processing time is 25-35 minute (being advisable with 30 minutes); Liquid after handling is poured in the sintered glass funnel of oven dry and filtered, after filtrate flows into the cold of drying in the air in the clean beaker, the light absorption value A of test liquid;
(3) then, according to above test data, calculate the blending ratio Fa of cotton fiber by Raspberry formula, formula is as follows:
In the formula: A---the light absorption value of fiber crops/cotton potpourri lysate;
Aa---the light absorption value of cotton fiber lysate;
Ab---the light absorption value of flaxen fiber lysate;
The blending rate of Fa---cotton fiber;
α---coefficient needs test to determine;
In the above-mentioned test process of the present invention, for testing the light absorption value of cotton, fiber crops and fiber crops/cotton potpourri sample, should be consistent to the condition that all cottons, fiber crops and fiber crops/cotton potpourri sample dissolution is handled, promptly the concentration of sulfuric acid solution, temperature and processing time all are a determined value.
The example of measuring the linen blending ratio is as follows:
1, be dissolving 30 minutes in 60%, 45 ℃ the sulfuric acid solution in concentration, resulting flax, cotton light absorption value mean value are: Aa:0.048, Ab:1.42.With the fiber crops/cotton potpourri of multiple known mixing ratio is dissolving 30 minutes in 60%, 45 ℃ the sulfuric acid solution in concentration respectively, obtains a plurality of light absorption values, and the α mean value of obtaining earlier according to Raspberry formula is 1.1539.
2, the cotton/hemp blended ratio of the preparation sample that is 10.5/89.5, measuring the lysate light absorption value A of recombined sample in the sulfuric acid solution under the similarity condition is 1.2886; The mixing ratio that calculates cotton fiber is 10.89%, and error only is 0.39%.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, the variation of making, remodeling, interpolation or replacement all should belong to protection scope of the present invention.
Claims (3)
1, the method for testing of a kind of fiber crops/cotton blending ratio, it is characterized in that: testing procedure is as follows:
(1) selection needs fiber crops, the cotton variety of the fiber crops/cotton potpourri of mensuration blending ratio, the light absorption value A of the fiber crops/cotton potpourri lysate of the light absorption value Aa of test cotton fiber lysate, the light absorption value Ab of flaxen fiber lysate and known mixing ratio, light absorption value A with the fiber crops/cotton potpourri of cotton, numb light absorption value Aa, Ab and known mixing ratio, bring in the Raspberry formula, obtain the α value of this fiber crops/cotton potpourri;
(2) from the fiber crops/cotton potpourri of needs mensuration blending ratio, take a sample,, and handle and remove impurity and slurry, dry by the fire, be put in the sulfuric acid solution and handle, and evenly shake to over dry with its potpourri garnetting; With the liquid filtering after handling, filtrate is dried in the air after the cold, the light absorption value A of test liquid;
(3) then, according to above test data, by the blending ratio Fa of Raspberry formula calculating cotton fiber, formula is as follows:
In the formula: A---the light absorption value of fiber crops/cotton potpourri lysate;
Aa---the light absorption value of cotton fiber lysate;
Ab---the light absorption value of flaxen fiber lysate;
The blending rate of Fa---cotton fiber;
α---coefficient needs test to determine;
In above-mentioned method of testing,, all identical to the dissolution process condition of all cottons, fiber crops and fiber crops/cotton potpourri sample for the test light absorption value.
2, according to the method for testing of the described fiber crops of claim 1/cotton blending ratio, it is characterized in that drying by the fire to cotton numb or numb/cotton potpourri of over dry be that 55%-65%, temperature are to handle in 42 ℃-48 ℃ the sulfuric acid solution in concentration, processing time is 25-35 minute, liquid after the processing is poured in the sintered glass funnel of oven dry and is filtered, and filtrate is to flow into the cold of drying in the air in the clean beaker.
3, according to the method for testing of the described fiber crops of claim 2/cotton blending ratio, it is characterized in that drying by the fire to cotton numb or numb/cotton potpourri of over dry dry by the fire to the sample of over dry be 60% in concentration, temperature is to handle in 45 ℃ the sulfuric acid solution, the processing time is 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100455277A CN1789977A (en) | 2005-12-08 | 2005-12-08 | Method for testing flax/cotton blending ratio |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2005100455277A CN1789977A (en) | 2005-12-08 | 2005-12-08 | Method for testing flax/cotton blending ratio |
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| CN1789977A true CN1789977A (en) | 2006-06-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076291A (en) * | 2012-11-30 | 2013-05-01 | 温演庆 | Three-primary colours dye and method for detecting two fibers blending ratio of linen to cotton |
| CN103472028A (en) * | 2013-09-22 | 2013-12-25 | 广西科技大学 | Method for determining content of components in blended fiber |
| CN105717073A (en) * | 2015-09-30 | 2016-06-29 | 广东工业大学 | Cotton fiber maturity measuring method based on densitometry |
-
2005
- 2005-12-08 CN CNA2005100455277A patent/CN1789977A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076291A (en) * | 2012-11-30 | 2013-05-01 | 温演庆 | Three-primary colours dye and method for detecting two fibers blending ratio of linen to cotton |
| CN103076291B (en) * | 2012-11-30 | 2015-08-19 | 温演庆 | A kind of tricolor dye and the method for detecting linen-cotton two kinds of fiber blend ratios |
| CN103472028A (en) * | 2013-09-22 | 2013-12-25 | 广西科技大学 | Method for determining content of components in blended fiber |
| CN105717073A (en) * | 2015-09-30 | 2016-06-29 | 广东工业大学 | Cotton fiber maturity measuring method based on densitometry |
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