FZ/T 01057.4-2007Test method for identification of textile fibres - Part 4: Solubility (English PDF)

1 Scope

This Part of FZ/T 01057 specifies a test method for textile fiber identification - solubility method.

This Part is applicable to qualitative identification for textile fibers.

2 Normative References

Provisions of the following documents, through reference in this Part of FZ/T 01057, constitute the provisions of this Part. For dated reference, the subsequent amendments (excluding correction) or revisions of these publications do not apply.

However, the parties who enter into an agreement according to this Part are encouraged to research whether the latest editions of these documents are applied or not. For undated references, the latest edition of the normative document is applicable to this part.

FZ/T 01057.1 Test Method for Identification of Textile Fibers - Part 1: General

Introduction

3 Principle

A fiber may be identified by utilizing the different solubility property at different temperature and in different chemical agents.

4 Reagent

The reagents to be used are analytically pure or chemical pure; they include:

concentrated sulphuric acid, concentrated nitric acid, formic acid, glacial acetic acid, fluohydric acid, sodium hydrate, sodium hypochlorite, potassium rhodanate,

N,N-dimethylformamide, cyclohexanone, dimethylketone, phenol, tetrachloroethane,

1,4-butyrolactone, dimethylsulphoxide, dichloromethane, carbon tetrachloride, tetrahydrofuran, cupric hydroxide, ammonium hydroxide (stronger ammonia water) and acetic ether.

5 Instrument and Tool

the solubility results gotten differ significantly.

9 Solubility Properties of Common Textile Fibers

The solubility properties of common textile fibers are as shown in Table A.1 of

Appendix A.

10 Test Report

The test report shall include the following information:

a) The statement that the test complies with the requirements of this Part;

b) The information of the sample;

c) The deflect from the specified procedure;

d) The solubility condition of the sample; and e) The fiber type of the sample.

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Fiber

Solution (solvent)

95%~98%

Sulfuric acid solution

70%

Sulfuric acid solution

60%

Sulfuric acid solution

40%

Sulfuric acid solution

36%~38%

Hydrochloric acid

15%

Hydrochloric acid

24°C~30°C

Boiling

24°C~30°C

Boiling

24°C~30°C

Boiling

24°C~30°C

Boiling

24°C~30°C

Boiling

24°C~30°C

Boiling

Cotton

Hemp

Natural silk

Animal plush

Viscose

Lyocell fiber

Modal fiber

Copper ammonia fiber

Acetate fiber

Triacetate fiber

Soybean fiber

Modified milk-proteinpolyacrylonitril fiber

Polylactic acid fiber

Dacron

Acrylon

Polyamide fiber 6

Polyamide fiber 66

Elastane

Polyvinyl alcohol fiber

Polyvinyl chloride fiber

Polyvinylidene chloride fiber

Polyethylene fiber

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Modified milk-proteinpolyacrylonitril fiber

Polylactic acid fiber

Dacron

Acrylon

Polyamide fiber 6

Polyamide fiber 66

Elastane

Polyvinyl alcohol fiber

Polyvinyl chloride fiber

Polyvinylidene chloride fiber

Polyethylene fiber

Polypropylene fiber

Aromatic polyamide fiber

Polystyrene fiber

Carbon fiber

Phenolic fiber

Polysulphonamide fiber

Amide-oxadiazole fiber

Polytetrafluoroethylene fiber

Asbestos

Glass fiber

Note 1: the symbols and their descriptions are as follows:S

- Immediately soluble; S - Soluble; P - Partially soluble; Pss - Slightly soluble; - - Lumpy; I - Insoluble; delta - Swelling.

Note 2: other method should be used for identification of asbestos and glass fiber, and they may be dissolved with fluohydric acid if necessary.

__________ END __________

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