GB/T 2910.24-2009Textiles - Quantitative chemical analysis - Part 24: Mixtures of polyester and some other fibers (method using phenol and tetrachloroethane) (English PDF)

Foreword

GB/T 2910 Textiles - Quantitative Chemical Analysis includes the following parts.

--- Part 1: General Principle of Testing;

--- Part 2: Ternary Fiber Mixture;

--- Part 3: Mixtures of Acetate and Certain other Fibres (Method Using Acetone);

--- Part 4: Mixtures of Certain Protein and Certain other Fibers (Method Using Hypochlorite);

--- Part 5: Mixtures of Viscose, Cupro or Modal and Cotton Fibres (Method Using Sodium Zincate);

--- Part 6: Mixtures of Viscose or Certain Types of Cupro or Modal or Lyocell and Cotton Fibres (Method Using Formic Acid and Zinc Chloride);

--- Part 7: Mixtures of Polyamide and Certain Other Fibres (Method Using Formic Acid);

--- Part 8: Mixtures of Acetate and Triacetate Fibres (Method Using Acetone);

--- Part 9: Mixtures of Acetate and Triacetate Fibres (Method Using Benzyl Alcohol);

--- Part 10: Mixtures of Triacetate or Polylactide and Certain Other Fibres (Method Using Dichloromethane);

--- Part 11: Mixtures of Cellulose and Polyester Fibres (Method Using Sulfuric Acid);

--- Part 12: Mixtures of Acrylic, Certain Modacrylic, Certain Chlorofibres, Certain Elastanes and Certain Other Fibres (Method Using Dimethylformamide);

--- Part 13: Mixtures of Certain Chlorofibers and Certain Other Fibers (Method Using Carbon Disulfide/Acetone)

--- Part 14: Mixtures of Acetate and Certain Chlorofibres (Method Using Acetic Acid);

--- Part 15: Mixtures of Jute and Certain Animal Fibres (Method by Determining Nitrogen Content);

--- Part 16: Mixtures of Polypropylene and Certain Other Fibres (Method Using Xylene);

--- Part 17: Mixtures of Chlorofibers (Homopolymers of Vinyl Chloride) and Certain Other Fibers (Method Using Sulfuric Acid);

--- Part 18: Mixtures of Silk and Wool or Hair (Method Using Sulfuric Acid);

--- Part 19: Mixtures of Cellulose Fibres and Asbestos (Method by Heating);

--- Part 20: Mixtures of Elastane and Some Other Fibers (Method Of Using Dimethylacetamide);

--- Part 21: Mixtures of Chlorofibers, Certain Modacrylics, Certain Elastanes, Acetates, Triacetates and Certain Other Fibers (Method Using Cyclohexanone);

--- Part 22: Mixtures of Viscose or Certain Types of Cupro or Modal or Lyocell and Flax of Ramie Fibres (Method Using Formic Acid and Zinc Chloride);

--- Part 23: Mixtures of Polyethylene and Polypropylene (Method Using Cyclohexanone);

--- Part 24: Mixtures of Polyester and Some Other Fibers (Method Using Phenol and Tetrachloroethane);

--- Part 101: Mixtures of Soybean Protein Composite Fibre and Certain Other Fibers. This Part belongs to Part 24 of GB/T 2910.

GB/T 2910-1997 is replaced by the following standards. GB/T 2910.1, GB/T 2910.3,

GB/T 2910.4, GB/T 2910.6, GB/T 2910.7, GB/T 2910.8, GB/T 2910.9, GB/T 2910.10,

GB/T 2910.11, GB/T 2910.12, GB/T 2910.13, GB/T 2910.14, GB/T 2910.15, GB/T 2910.16, GB/T 2910.17, GB/T 2910.18, GB/T 2910.19 and GB/T 2910.22.

This Part refers to ISO/DIS 1833-24.2007 Textiles - Quantitative Chemical Analysis - Part 24: Mixtures of Polyester and Some Other Fibers (Method Using Phenol and Tetrachloroethane).

1 Scope

This Part of GB/T 2910 specifies the method of using phenol and tetrachloroethane method to determine, after removing the non-fibrous substances, the content of polyester fiber in the binary mixture.

--- Polyester fiber --- Polyacrylonitrile fiber, modified polyacrylonitrile fiber, polypropylene fiber or aramid fiber. This Part is not applicable to the coated fabric.

2 Normative References

The provisions in following documents become the provisions of this Part through reference in this Part of GB/T 2910. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Part, however, parties who reach an agreement based on this Part are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies.

GB/T 2910.1 Textiles - Quantitative Chemical Analysis - Part 1: General Principles of Testing (GB/T 2910.1-2009, ISO 1833-1:2006, IDT)

3 Principles

Use the phenol and tetrachloroethane mixed reagent to dissolve and remove the polyester fiber from the mixture with known dry mass.

4 Reagents

Use the reagents specified in GB/T 2910.1 and this Part.

5 Apparatus

Use the apparatus specified in GB/T 2910.1, as well as 5.1 and 5.2 in this Part.

5.1 Conical flask with stopper. minimum capacity of 250mL

6 Test Procedures

It shall be performed as per the general procedures specified in GB/T 2910.1. Then operate as per the following procedures.

Place the specimen into the conical flask (5.1). Each gram of test object shall be added with 100mL of phenol/tetrachloroethane solution (4.1). Shake the conical flask for 10min in the (40±5) °C heating device (5.2); then pour the liquid into the weighed crucible, pump and filter with the suction filtration device.

7 Result Calculation and Expression

Calculate the result as per GB/T 2910.1.

Value d for other fibers is 1.00 except for Value d for polypropylene fiber is 1.01.

8 Precision

For the homogeneous mixture of textile materials, the confidence limit of the testing results of this method shall not exceed ±1 at the 95% confidence level. […]