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Your location: Home > Related Articles > Experimental method and requirements of light color fastness tester

Experimental method and requirements of light color fastness tester

Author:QINSUN Released in:2023-08 Click:81

The light fastness tester is used for light aging test of various textiles, leathers, plastics and other materials. Qisnun Precision Electromechanical Technology Co., Ltd. can provide it. Customers in need are encouraged to inquire. In the national standard system, GB/T8426-1998 \"Tests of textile color fastness: Color fastness to light: Sunlight\" and GB/T8427-1998 \"Tests of textile color fastness: Color fastness to light Artificial: Xenon Arc\" have 5 options of exposure methods. path.

Method 1 is to control the exposure period by checking the samples, and each sample should be equipped with a set of blue wool standards;

Method 2 is to check the blue wool standards to control the exposure period, a batch of different multiple samples only need one set of blue wool standards;

The method3 is used to check if the sample meets a certain performance specification, the sample only needs to be fitted with two The blue wool standard is also used to check the exposure period by checking the blue wool; method 4 is used to check if the sample matches an agreed reference sample, and the blue wool standard is not required but checking the reference sample. Checking the exposure period;

Method 5 is used to check if the sample meets the approved radiation energy. The sample can be exposed alone or equipped with a blue wool standard. The exposure time is based on whether the specified radiation energy is reached. Certainly.

In the national standard system, GB/T8429-1998 \"Test of textile color fastness to weathering: outdoor exposure\" and GB/ T8430 -1998 \"Soundness Teststextile colors to artificial weathering Color fastness: xenon arc\" There are only 3 methods for the selection of exposure methods, of which method 1 and method 2 are the same as above, and method 3 is the same as above 5. However, the exposure method in GB/T843l-1998 \"Textile Inspection and EvaluationTest for Color Fastness Photochromism\" is specific, only low-grade blue wool standard 1 or L2 is required, which is determined by the time it takes for the blue wool standard to change color The exposure time of the sample. There are also three exposure methods in GB/Tl6991—1997 \"Tests of textile color fastness: color fastness to high temperature light: xenon arc\". Method 1 and method 3 are the same as above, and method 2 is to control the exposure period by checking the specified minimum. level standards. .

Requirementes techniques:

Due to the different climatic conditions in my country and the United States, there are some differences in the standards. In GB/T 8427—1998 Standard \"Color Fastness to Artificial Light: Xenon Arc\", the temperature and humidity control is as follows: Under normal conditions (temperate zone), an effective average humidity is used, the humidity control standard sample is level 5, and the blackboard high standard temperature is 50°C , ThThe radiation energy per unit area (amount of radiation) measured by the radiometer is 42 W/m (wavelength is 300 nm to 4000 nm). The standard moisture control swatch is cotton poplin fabric dyed with red insoluble azo dyes. The method consists of exposing the standard moisture control sample with the standard blue wool fabric. sheep\'s wool standard evaluates its color fastnessin the light.

The technical conditions for exposure of indoor textiles in the American standard AATCCTM16-2003 \"Color fastness to sunlight\" are: the air temperature in the test chamber is (43 ±2)℃, and the relative humidity in the room is (30 ± 5)%, blackboard thermometer (63 ± 3) °C, radiation (48 ± 1) W/m2 (wavelength 300 nm~400nm).

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