Gester Instruments | Professional Textile, Footwear and PPE Testing Equipments Manufacturers Since 1997
Analysis of the exposure angle of the aging test of the color fastness tester to sunlight
The light fastness tester is a test instrument for quickly measuring the light fastness and weather fastness of dyes and the light and weather resistance of various substances. (Hong Kong) Co., Ltd. can provide users with solutions. In addition, the R&D engineer said that it is very important to choose an appropriate exposure angle for products that need to be tested for sun aging performance. Only in this way can the scientificity and correctness of the test results be ensured. 45°South: This angle is regarded as a typical outdoor exposure angle, and it is also the angle chosen by many factories. Widely used for materials not selected for specified exposure angles. 5°South: This exposure angle is the exposure angle that is used for automotive products or other materials that specify this angle, or is used as a near-horizontal angle. This small inclination angle allows rainwater moisture to stay on the sample surface. Due to more annual solar radiation received, this inclination is compared to 45°The test will be even harsher. Especially during the summer months, these effects are intensified due to higher temperatures. and 5°The inclination angle will be higher than 45°The angle of inclination collects more condensation and the moisture stays longer. 0°(Horizontal plane): Horizontal exposure is rarely used for flat samples or templates, because a slight 5°The angle of inclination allows the water to flow away. However, this angle is useful for many 3D samples and parts. This exposure angle is also used for some materials that require standing water, such as roofing materials. Latitude angle: 25 north latitude°is the location of the Florida Proving Ground. Latitude 34°is the location of the Arizona Proving Ground. This angle, called the latitude angle, is used to maximize solar radiation. Latitude angles are also widely used in solar installations such as solar heaters. 90°South: This vertical fixed angle is most commonly used for architectural coatings. Vertical exposure angles greatly reduce solar radiation, lower exposure temperatures, and reduce wet time.
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1. ISO 5402-1: Specifies the flexometer method for testing leather flex resistance under repeated bending.
2. ISO 17694: Defines test methods for footwear upper and lining flex resistance, simulating real-world bending stress to assess long-term durability.
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