How much is the xenon lamp shoe material yellowing resistance testing machine

Predicting the service life of plastic products in advance can help companies improve product reliability (such as avoiding premature failure of outdoor plastic parts due to aging) and reduce after-sales risks.

Desktop Xenon Lamp Shoe Material Yellowing Resistance Testing MachineIt is a small testing device specifically designed to simulate natural factors such as light and heat, and accelerate the yellowing phenomenon of shoe materials (such as shoe upper leather, shoe sole, shoelaces, glue, etc.) during use. Its design is compact and suitable for laboratory desktop placement. It mainly focuses on the quick evaluation of the yellowing resistance of shoe materials, helping enterprises control product quality.

Core features of the equipment

1. Light source simulationUsing a xenon lamp as the light source, it can simulate the ultraviolet and visible light bands in sunlight, which is closer to natural aging conditions. Compared with traditional ultraviolet lamps, it can more comprehensively reflect the yellowing trend of shoe materials.

2. Precise Temperature ControlEquipped with a temperature control system, it can control the temperature inside the test chamber (usually set between 40 ℃~80 ℃) and simulate the effect of different environmental temperatures on the yellowing of shoe materials.

3. Miniaturization designSmall in size and occupying less space, suitable for rapid sampling in laboratories or production lines. A small number of samples can be tested at a time (such as several pieces of shoe upper material or shoe sole slices).

4. Easy to operateUsually equipped with a digital control panel, it can set parameters such as test time (such as 0-999 hours), temperature, light intensity, etc. The test process is automated and automatically stopped after completion.

Main application scenarios

• Incoming material inspection, semi-finished product and finished product quality testing for shoe material production enterprises.

• Research institutions conduct performance testing on new shoe materials such as environmentally friendly adhesives and yellowing resistant leather.

• Third party testing agencies conduct certification tests on the yellowing resistance of footwear products.

Test Principle

Place the shoe material sample together with the standard template in the test chamber and conduct accelerated aging tests under the set xenon lamp irradiation and temperature conditions. After the experiment is completed, the yellowing resistance of the shoe material is evaluated by comparing the yellowing degree of the sample with the untested sample and standard template through visual inspection or colorimeter (usually expressed as yellowing grade or color difference Δ E value).

Related reference standards

Although there is currently no specific standard for testing the yellowing resistance of shoe materials using "desktop xenon lamps", the testing methods often refer to commonly used shoe material yellowing resistance and photoaging standards, such as:

• GB/T 22866-2008 "Physical and mechanical tests for leather - Determination of resistance to light and yellowing"This specifies the testing method for leather's resistance to yellowing under light sources such as xenon lamps.

• SATRA TM303 "Light resistance yellowing test"The International Footwear and Leather Technology Research Association standard involves the assessment of yellowing of materials under light exposure and is applicable to shoe materials.

• Internal standards of enterprises: Many shoe companies will develop specific xenon lamp aging conditions (such as light intensity and test time) based on their own product needs to determine whether the shoe material is qualified.

Through the testing of this device, potential yellowing issues of shoe materials during use can be detected in advance, helping companies optimize material formulations (such as adding antioxidants, UV absorbers) or production processes, and improve product durability and aesthetics.

Desktop Xenon Lamp Shoe Material Yellowing Resistance Testing MachineThe testing standards mainly focus on the yellowing resistance of shoe materials (such as leather, rubber, plastic, fabric, etc.) under simulated natural light conditions (especially xenon lamp simulated sunlight). The commonly used standards at home and abroad can be divided intoInternational standards, national standards, industry association standardsAnd the internal standards of the enterprise are as follows:

1、 International General Standards

1. ISO 105-B02 "Tests for color fastness of textiles - Part B02: Color fastness to artificial light: Xenon arc"

• Scope of application: including the light yellowing resistance test of textiles such as shoe fabrics and shoe surface materials.

• Core content: It specifies the use of xenon lamps to simulate sunlight (adjust the spectrum through filters to approximate natural sunlight), control temperature, humidity, and irradiance, test the degree of yellowing of samples after illumination, and evaluate the grade through grayscale cards or colorimeters.

2. SATRA TM303 "Light resistance yellowing test"

• Publisher: International Footwear and Leather Technology Research Association (SATRA), responsible for shoe material testingmajorAccurate one.

• Scope of application: Various types of shoe materials (leather, rubber soles, synthetic materials, etc.).

• Test conditions: Using a xenon lamp as the light source, the light intensity (such as 340nm band irradiance), temperature (usually 50 ℃± 3 ℃), and test time (commonly 24 hours, 72 hours, etc.) can be set according to the material type.

• Evaluation method: By comparing the degree of yellowing of the sample before and after the experiment, the Δ E value is measured using visual rating (1-5 levels, with 5 being the best and 1 being the worst) or colorimeter.

2、 National Standard (China)

1. GB/T 22866-2008 "Physical and mechanical tests for leather - Determination of resistance to light and yellowing"

• Scope of application: Leather for shoes (such as shoe upper leather, inner leather).

• Test method: It is explicitly allowed to use xenon lamps as light sources, simulate natural lighting conditions, control blackboard temperature (such as 60 ℃± 2 ℃), relative humidity (40% ± 5%), and test time can be set according to requirements (such as 168 hours).

• Evaluation method: Evaluate the color change level (1-5 levels) using a gray sample card, or measure the yellowing index (Δ YI) using a colorimeter.

2. QB/T 4340-2012 "Test Method for Yellowing Resistance of Sole Materials"

• Scope of application: Rubber, plastic and other shoe sole materials.

• Core content: Xenon lamps can be used as one of the light sources to evaluate the yellowing trend of shoe soles under illumination. The test conditions include temperature (such as 50 ℃± 2 ℃), light intensity, and time, and the results are determined by colorimeter or visual comparison.

3、 Other relevant reference standards

• ASTM D1148 "Standard Test Method for Rubber Deterioration (Surface Cracking)"Although mainly aimed at cracking, some clauses involve the appearance changes (including yellowing) of rubber materials under xenon lamp illumination, which can serve as auxiliary references for rubber components used in shoes.

• JIS L0843 "Test Method for Light Color Fastness"Japanese industrial standards stipulate the color fastness test of materials under xenon lamp irradiation, applicable to fabrics, leather, etc. in shoe materials.

Summary of Core Elements of Standards

Regardless of the standard, the key parameters for the yellowing resistance test of xenon lamp shoe materials include:

• light sourceXenon lamp (requires matching filter to simulate the spectrum of sunlight in different environments, such as light passing through window glass or direct sunlight);

• irradianceUsually, the power density in the 340nm or 420nm band is used as the indicator (such as 0.35W/m ² @ 340nm);

• temperatureBlackboard temperature or cabin air temperature (30 ℃~80 ℃, set according to material characteristics);

• Test timeRanging from a few hours to several hundred hours (such as 24 hours, 72 hours, 168 hours);

• evaluation metricYellowing grade (visual rating), color difference Δ E (CIELAB color space), yellowing index Δ YI, etc.

In actual testing, enterprises will choose corresponding standards or develop internal specifications (such as enterprise standards stricter than national/international standards) based on product types (such as sports shoes, leather shoes, children's shoes) and target markets, to ensure that shoe materials are not easily yellowed due to light and high temperature during use, and to ensure the durability of product appearance.