1. Scope of application
ISO 105 B02 is applicable to the determination of the colour fastness of all types and forms of textiles to artificial light sources (simulated natural daylight D65). This standard also applies to white textiles (bleached or fluorescent white).

This standard allows the use of two different sets of blue wool reference materials, namely ISO: levels 1-8; AATCC:L2-L9. The test results of the two reference materials are not necessarily equivalent.

ISO 105 B02-2014 – Testing for Colour fastness of Textiles to artificial light – Bleaching of xenon arc lamp

2. Reference standards
Textiles – Tests for colour fastness – Part A01: General principles of testing

ISO 105 A02:1993 Textiles – Tests for colour fastness-Part A02: Grey cards for assessing colour fastness

ISO 105 A05 Textiles – Tests for colour fastness – Part A05: Machine-evaluated colour change

ISO 105 B01 Textiles – Tests for colour fastness – Colour fastness to light: daylight

ISO 105 B05:1993 Textiles – Tests for colour fastness – Part B05: Detection and rating – discolorations in response to light

ISO 3696:1987 Water for testing and analysis – Specification requirements and test methods

CIE Publication No. 51 Method for assessing the quality of daylight simulators for colorimetry.

ISO 105 B02-2014 – Testing for Colour fastness of Textiles to artificial light – Bleaching of xenon arc lamp

Step 3: Principles
The same set of standard blue wool was exposed to the sun (artificial light) under the specified conditions. Ratings were made by comparing the sample color change with the standard blue wool color change.

For white samples, ratings were obtained by comparing the whiteness change of the sample with the standard blue wool color change.

4. Standard materials and equipment
4.1 Reference Material

Two sets of reference materials namely ISO: 1-8; AATCC: Both L2-L9 can be adopted, and the results are not comparable.

4.1.1 Reference materials 1-8

1: Very low colour fastness

ISO 105 B02-2014 – Testing for Colour fastness of Textiles to artificial light – Bleaching of xenon arc lamp

8: Very high fastness

High grade standard wool is about twice as light resistant as low grade wool.

4.1.2 Reference material L2-L9

High grade standard wool is about twice as light resistant as low grade wool.

4.1.3 Humidity control substance

Effective humidity: air and surface temperature and air relative humidity (which controls the surface of the sample during light exposure)

Moisture content), which can be measured by measuring specified humidity control substances.

For the purpose of testing in this part of ISO 105, the humidity control substance is designated as red azo-dyed cotton cloth.

Control substances have been tested and calibrated south facing at various locations in Western Europe at different times of the year. Blue standard wool has been tested together in sealed tanks (0 to 100% air humidity); The results do not change much, with the averages as follows:
When the samples were tested under the conditions set in the temperate zone ISO 105 B01, the average color fastness of the control substances was 5.

4.2 Equipment

4.2.1 Xenon arc lamp is air-cooled or water-cooled

ISO 105 B02-2014 – Testing for Colour fastness of Textiles to artificial light – Bleaching of xenon arc lamp

Intensity change: AVG.+10%

Recommended levels of luminescence:

Air cooling: 42W/m2x Wavelength, wavelength of 300-400nm

Water cooling: 1.1W/ m2x Wavelength, wavelength is 420nm

The sample and specimen should be at the same distance from the lamp.

a) Light source: in a well-ventilated exposure box. Xenon arc light source temperature 5500K~6500K

b) Optical filter: located between the light source, the sample and the standard wool, so that the ultraviolet light is stabilized and weakened.

Through the light: > 90% 380nm ~ 750nm →0 310nm~320nm

c) Heat filter: located between the light source, the sample and the standard wool, so that the infrared light is stabilized and weakened.

ISO 105 B02-2014 – Testing for Colour fastness of Textiles to artificial light – Bleaching of xenon arc lamp

It should be cleaned frequently.

4.2.2 Opaque cardboard – no fluorescence is required

4.2.3 Temperature sensor

4.2.4 Discoloration rating Gray card

4.2.5 Rating box

4.2.6 Radiometer

4.2.1.1 Air-cooled xenon arc lamp equipment

ISO 105 B02-2014 – Testing for Colour fastness of Textiles to artificial light – Bleaching of xenon arc lamp

5. Sample
The sample size depends on the number of samples and the shape and size of the sample gripper.

5.1 Air-cooled type: not less than 45X10mm Each irradiated and unirradiated size is not less than 10X8mm

6. Exposure conditions
6.1 Conditions of Use in Europe

a) Conventional conditions (temperate zone)

Moderate relative humidity (ISO 105 B01)J under a)b) conditions, humidity was determined by humidity control of the specimen.

a) Color fastness of moisture controlled substances: 5;

b) Maximum blackboard temperature: 50 degrees Celsius.

b) Extreme conditions

ISO 105 B02-2014 – Testing for Colour fastness of Textiles to artificial light – Bleaching of xenon arc lamp

6.2 Conditions of use in the United States

Blackboard temperature: 63+1 degrees Celsius

Box air relative humidity: 30+5%

Effective humidity: Low

Color fastness of moisture controlled substance: 6-7

Q-sun xenon lamp test chamber for ISO 105 B02 test method