CN104729951A - Quantitative chemical analysis method of triacetate fiber and polyester fiber blended product - Google Patents
Quantitative chemical analysis method of triacetate fiber and polyester fiber blended product Download PDFInfo
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- CN104729951A CN104729951A CN201510095985.5A CN201510095985A CN104729951A CN 104729951 A CN104729951 A CN 104729951A CN 201510095985 A CN201510095985 A CN 201510095985A CN 104729951 A CN104729951 A CN 104729951A
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- dacron
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Abstract
The invention belongs to the textile component detection technology, and relates to a quantitative chemical analysis method of a triacetate fiber and polyester fiber blended product. The quantitative chemical analysis method is characterized in that H2SO4 with certain concentration is adopted for treatment; the treatment conditions are that the concentration of H2SO4 is 75%, the treatment temperature is 50 +/-5 DEG C, the treatment time is 1 hour, and shaking is carried out once every 10 minutes; the method comprises the following steps: treating a test sample by the 75% H2SO4, so that triacetate in the test sample is dissolved, collecting residual polyester fibers in the test sample, and calculating to obtain the fiber component contents of the triacetate and polyester fiber blended product. The quantitative chemical analysis method, 75% H2SO4 method, is economical, environmentally friendly, healthy and safe on the basis of guaranteeing the accuracy of a test result.
Description
Technical field
The present invention relates to analysis and testing technology field, be specifically related to a kind of triacetate and dacron blending product method for carrying out quantitative chemical analysis.
Background technology
The current testing standard for triacetate and the quantitative test of dacron blending product is: GB/T2910.10-2009 " textile quantitative chemical analysis the 10th part: the potpourri (methylene chloride method) of triacetate or PLA and some other fiber ".Standard regulation adopts methylene chloride method to measure triacetate and dacron blending product fiber content, namely with methylene chloride, triacetate is dissolved removal from the potpourri of known dry mass, collect residue, clean, dry and weigh, by revised Mass Calculation, it accounts for the percent of potpourri dry mass, is drawn the quality percentage of triacetate by difference.But methylene chloride, as a kind of organic solvent, has certain toxicity, nervous centralis and respiratory system can be caused to suffer damage by human body suction, in GB/2910.10-2009, lay special stress on should take perfect safeguard measure when using methylene chloride.And methylene chloride has cumulative effect in underground water, there is certain harm to environment.In addition, in GB/2910.10-2009 standard, the calculating of result and expression part are mentioned: if triacetate not exclusively dissolves, then the percentage composition d value of triacetate is 1.02 corrections, this just illustrates in the quantitative test of triacetate and dacron blending product, methylene chloride method is adopted to dissolve, likely produce the incomplete situation of the dissolving of triacetate in methylene chloride, thus cause the inaccurate of quantitative result.Therefore, there is certain defect in the quantitative test using methylene chloride to carry out triacetate dacron blending product as solvent.Triafol T is obtained through acetylization reaction by the cellulose of natural reproducible, is soluble in acid.Therefore, relative to methylene chloride, select 75%H
2sO
4certain feasibility is had as removal of solvents triacetate, and more economy, environmental protection and healthy and safe.
Given this, we propose a kind of employing 75% H
2sO
4measure the method for testing of triacetate and dacron blending product fiber content, the method for inventing can meet the quantitative test of triacetate and dacron blending product.
Summary of the invention
The object of the invention is to overcome the defect of methylene chloride method in GB/T2910.10-2009, a kind of more economy, environmental protection, healthy and safe triacetate and dacron blending product method for carrying out quantitative chemical analysis are provided.
According to the present invention, provide a kind of triacetate and dacron blending product method for carrying out quantitative chemical analysis, the method adopts:
75% H
2sO
4process triacetate and dacron blending product sample, treatment conditions are: described H
2sO
4concentration is 75%, and treatment temperature is 50 DEG C ± 5 DEG C, and the processing time is 1h, every 10min shake once;
Test procedure: sample is through 75% H
2sO
4after process, the triacetate in sample dissolves, and collect in sample and remain dacron, calculate the content of fiber constituent of triacetate and dacron blending product, computing formula is as follows:
In formula:
P
---the massfraction of dacron in sample, %;
M
o -samples dried quality, unit is g;
M
1 -dacron dry mass, unit is g;
D
-dacron correction factor, d value is 1.00.
Wherein, the method comprises the steps:
1)sampling: for triacetate and dacron blending product, get the sample of two parts of about 1g;
2)the preparation of sulfuric acid solution: the dense H getting ρ=1.84g/mL
2sO
4700mL joins in the water of 350mL carefully, and solution adds water to 1L after being cooled to room temperature again, is mixed with the H of 75 quality %
2sO
4; Ammoniacal liquor 80 mL of ρ=0.880 g/mL is diluted with water to 1L;
3)carry out oven dry to sample to weigh, obtain the clean dry mass m of sample
o;
4)processing scheme: every gram of sample adds the H of 200mL 75 quality %
2sO
4sulfuric acid, covers tightly bottle stopper, and shaking flasks makes sample soak, and is kept by flask 50 DEG C ± 5 DEG C to place 1h, every 10min shake once;
5)sample is after above-mentioned handling procedure, and the triacetate in sample dissolves, and collect the remaining dacron of sample, oven dry is weighed, and obtains the quality m of dacron in sample
1;
6)calculate the content of fiber constituent of triacetate and dacron blending product.
Wherein, in above-mentioned steps 2) in also configure weak aqua ammonia, compound method is, ammoniacal liquor 80 mL of ρ=0.880 g/mL is diluted with water to 1L, afterwards in the processing scheme of step 4), pour the liquid after process in flask into glass sand core crucible to filter, insoluble fiber is also moved into glass sand core crucible, glass sand core crucible is filled with sulfuric acid, by gravity drainage, use cold water continuous washing for several times afterwards, twice is washed again with above-mentioned weak aqua ammonia, fully wash with cold water afterwards, each cleaning all first uses vacuum draw discharge opeing again by gravity drainage, finally glass sand core crucible and insoluble fiber are dried, cooling.
75% H that the present invention is above-mentioned
2sO
4method carries out quantitative chemical analysis to triacetate and dacron blending product, in guarantee test result accurately on basis, more economically, environmental protection and healthy and safe, has a extensive future.
Embodiment
A kind of triacetate and dacron blending product method for carrying out quantitative chemical analysis experimental procedure: sample is put into Erlenmeyer flask, and every gram of sample adds 200mL75% (massfraction) H
2sO
4sulfuric acid, covers tightly bottle stopper, and shaking flasks makes sample soak, and is kept by flask 50 DEG C ± 5 DEG C to place 1h, every 10min shake once, filters, insoluble fiber is also moved into glass sand core crucible by the glass sand core crucible of known dry weight, with a small amount of sulfuric acid solution washing flask.Vacuum draw discharge opeing, then fill glass sand core crucible, by gravity drainage with sulfuric acid, or place 1min final vacuum suction discharge opeing, with cold water continuous washing several, wash twice with weak aqua ammonia, then fully wash with cold water, each washing lotion is first by gravity drainage, vacuum draw discharge opeing again, finally dries glass sand core crucible and insoluble fiber, cooling, weigh, calculate fiber content.
Comprise the steps:
1) sample: for triacetate and dacron blending product, get the sample of two parts of about 1g;
2) preparation of sulfuric acid solution and weak aqua ammonia: preferably, get the dense H of 700mL
2sO
4(ρ=1.84g/mL) joins in the water of 350mL carefully, and solution adds water to 1L after being cooled to room temperature again, is mixed with the H of 75% (massfraction)
2sO
4; The ammoniacal liquor (ρ=0.880 g/mL) of 80 mL is diluted with water to 1L.Other modes that certainly this area also can be adopted to commonly use prepare the H of debita spissitudo
2sO
4solution and ammoniacal liquor.
3) carry out oven dry to sample to weigh, obtain the clean dry mass m of sample
o, be accurate to 0.1mg;
4) processing scheme: every gram of sample adds 200mL75% (massfraction) H
2sO
4sulfuric acid, covers tightly bottle stopper, and shaking flasks makes sample soak, and is kept by flask 50 DEG C ± 5 DEG C to place 1h, every 10min shake once;
5) sample is after above-mentioned handling procedure, and the triacetate in sample dissolves, and collect the remaining dacron of sample, oven dry is weighed, and obtains the quality m of dacron in sample
1, be accurate to 0.1mg;
6) content of fiber constituent of triacetate and dacron blending product is calculated;
Computing formula is as follows:
In formula:
The massfraction of dacron in P---sample, %;
M
o-samples dried quality, unit is g;
M
1-dacron dry mass, unit is g;
D-dacron correction factor, d value is 1.00.
Will be further described below the present invention:
Triacetate and dacron blend standard value: triacetate 75.0 ± 5%, dacron 25.0 ± 5%
Adopt triacetate of the present invention and dacron blending product method for carrying out quantitative chemical analysis---the H of 75%
2sO
4carry out Treatment Analysis, processing scheme: for ensureing data accurately and reliably, get 5 Duplicate Samples, the quality of each sample is about 1.0g (being accurate to 0.1mg).Sample adds 200mL75% (massfraction) H
2sO
4sulfuric acid, covers tightly bottle stopper, and shaking flasks makes sample soak, and is kept by flask 50 DEG C ± 5 DEG C to place 1h, every 10min shake once.Filter by the glass sand core crucible of known dry weight afterwards, insoluble fiber is also moved into glass sand core crucible, with a small amount of sulfuric acid solution washing flask.Vacuum draw discharge opeing, then fill glass sand core crucible, by gravity drainage with sulfuric acid, or place 1min final vacuum suction discharge opeing, with cold water continuous washing several, then wash twice with weak aqua ammonia, then fully wash with cold water, each washing lotion is first by gravity drainage, vacuum draw discharge opeing again, finally dries glass sand core crucible and insoluble fiber, cooling, weigh, calculate fiber content.
Result of calculation is as table 1:
Table 1 blending product adopts 75%H
2sO
4method test result
Comparative example
GB/2910.10-2009 methylene chloride method: get 5 Duplicate Samples, the quality of each sample is about 1.0g (being accurate to 0.1mg).Ready sample is put into Erlenmeyer flask, and every gram of sample adds 100mL methylene chloride, covers tightly bottle stopper, and shaking flasks makes sample fully wetting, places 30min, every 10min shake once.Liquid glass sand core crucible is filtered, then adds 60mL methylene chloride to the residue in Erlenmeyer flask, with hand dynamic, be filled in crucible, cleaned in crucible by residue with a small amount of methylene chloride.Vacuum draw discharge opeing, then fill crucible with methylene chloride, gravity drainage.Last vacuum draw, with hot water cleaning, dries crucible and residue, cool, weighs, calculate fiber content.
Result of calculation is as table 2:
Table 2 blending product adopts methylene chloride method test result
As can be seen from experimental result, with two kinds of diverse ways tests, triacetate content is 75.4%, and result is equal.Both all only differ 0.4% with blend standard value, meet the requirement of fiber content accuracy of detection.Adopt 75% H
2sO
4method more economically, environmental protection and healthy and safe.Therefore, in the testing process of reality, employing 75% H can be considered
2sO
4method replaces methylene chloride method to carry out the quantitative chemical analysis of triacetate and dacron blending product.
Although the present invention specifically lists numerous embodiments of the present invention, it should be noted that those skilled in the art can carry out suitable modifications and variations to each key element of the present invention, scope of the present invention should comprise this modifications and variations.
Claims (3)
1. triacetate and a dacron blending product method for carrying out quantitative chemical analysis, is characterized in that: described method adopts: 75% H
2sO
4process triacetate and dacron blending product sample, treatment conditions are: described H
2sO
4concentration is 75%, and treatment temperature is 50 DEG C ± 5 DEG C, and the processing time is 1h, and every 10min shake once, sample is through 75% H
2sO
4after process, the triacetate in sample dissolves, and collects in sample and remains dacron, calculate the content of fiber constituent of triacetate and dacron blending product;
Computing formula is as follows:
In formula:
P
---the massfraction of dacron in sample, %;
M
o -samples dried quality, unit is g;
M
1 -dacron dry mass, unit is g;
D
-dacron correction factor, d value is 1.00.
2. a kind of triacetate according to claim 1 and dacron blending product method for carrying out quantitative chemical analysis, it is characterized in that, described method comprises the steps:
1)sampling: for triacetate and dacron blending product, get the sample of two parts of about 1g;
2)the preparation of sulfuric acid solution: the dense H getting ρ=1.84g/mL
2sO
4700mL joins in the water of 350mL carefully, and solution adds water to 1L after being cooled to room temperature again, is mixed with the H of 75 quality %
2sO
4;
3)carry out oven dry to sample to weigh, obtain the clean dry mass m of sample
o;
4)processing scheme: every gram of sample adds the H of 200mL 75 quality %
2sO
4sulfuric acid, covers tightly bottle stopper, and shaking flasks makes sample soak, and is kept by flask 50 DEG C ± 5 DEG C to place 1h, every 10min shake once;
5)sample is after above-mentioned handling procedure, and the triacetate in sample dissolves, and collect the remaining dacron of sample, oven dry is weighed, and obtains the quality m of dacron in sample
1;
6)calculate the content of fiber constituent of triacetate and dacron blending product.
3. a kind of triacetate as claimed in claim 2 and dacron blending product method for carrying out quantitative chemical analysis, wherein in step 2) in also configure weak aqua ammonia, compound method is, ammoniacal liquor 80 mL of ρ=0.880 g/mL is diluted with water to 1L, afterwards in the processing scheme of step 4), pour the liquid after process in flask into glass sand core crucible to filter, insoluble fiber is also moved into glass sand core crucible, glass sand core crucible is filled with sulfuric acid, by gravity drainage, use cold water continuous washing for several times afterwards, twice is washed again with above-mentioned weak aqua ammonia, fully wash with cold water afterwards, each cleaning all first uses vacuum draw discharge opeing again by gravity drainage, finally glass sand core crucible and insoluble fiber are dried, cooling.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222824A (en) * | 2016-08-17 | 2016-12-14 | 青纺联（枣庄）纤维科技有限公司 | A kind of triacetate, terylene, Modal mixed yarn and production technology thereof |
| CN106680141A (en) * | 2017-01-11 | 2017-05-17 | 朱洪敏 | Automatic weighing system and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0312268A2 (en) * | 1987-10-09 | 1989-04-19 | Polyplastics Co. Ltd. | Method of treating surface of molded article comprising liquid crystal polyester resin |
| 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 |
| CN104122164A (en) * | 2013-04-26 | 2014-10-29 | 广东省东莞市质量监督检测中心 | Quantitative determination method for fiber content of viloft fiber and polyester fiber blended textiles |
-
2015
- 2015-03-04 CN CN201510095985.5A patent/CN104729951A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0312268A2 (en) * | 1987-10-09 | 1989-04-19 | Polyplastics Co. Ltd. | Method of treating surface of molded article comprising liquid crystal polyester resin |
| 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 |
| CN104122164A (en) * | 2013-04-26 | 2014-10-29 | 广东省东莞市质量监督检测中心 | Quantitative determination method for fiber content of viloft fiber and polyester fiber blended textiles |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局 等: "《GB/T 2910.11－2009 纺织品 定量化学分析 第11部分：纤维素纤维与聚酯纤维的混合物（硫酸法）》", 30 September 2009 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222824A (en) * | 2016-08-17 | 2016-12-14 | 青纺联（枣庄）纤维科技有限公司 | A kind of triacetate, terylene, Modal mixed yarn and production technology thereof |
| CN106680141A (en) * | 2017-01-11 | 2017-05-17 | 朱洪敏 | Automatic weighing system and use method thereof |
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