GB/T 2392-2014Dyes - Determination of thermo stability (English PDF)

1 Scope

This standard specifies the method for the determination of soluble reactive dye and vat dye thermal stability.

This standard applies to the determination of soluble vat dyes and reactive dye thermal stability.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 1637 Determination of soluble vat dye shade and intensity

General conditions GB/T 2374-2007 Determination of dyes provisions

Determination of GB/T 2387 Reaction dye shade and intensity

Determination of GB/T 6688-2008 relative dye strength and color of the instrumental method

Principle 3

The sample was sealed in ampoules at 70 °C continuously curing a certain time, dyed or printed, the same sample with untreated into the baking

Line contrast to shade changes and strength decrease, to represent its thermal stability.

4 Reagents and materials

The reagents used should be consistent with GB/T 2374-2007 the provisions of Chapter 3, comprising.

Ampoules, capacity 20mL.

5. Apparatus

The equipment shall comply with GB/T 2374-2007 Chapter 4, comprising.

a) electric heated oven;

b) Laboratory Dyeing Machine;

c) laboratory printing machine.

6 Test methods

Sample preparation 6.1