What are the aging test items
The aging test mainly refers to the thermal oxygen aging test for rubber, plastic products, electrical insulation materials and other materials; or the ventilation aging test for electronic parts and plastic products.
The aging test is divided into temperature aging, sunlight aging aging, loading aging and so on.
High-temperature aging is generally carried out in several grades. Industrial generally uses a level of 70 degrees, 4 hours, and 15 degrees. Generally, there are 40 degrees, 55 degrees, 70 degrees, and 85 degrees. The time is generally 4 hours.
According to the number of aging test products, it is divided into two methods to test
1. Aging box; mainly for plastic products, and products with small quantity and volume are more practical
2. Aging cabinet or aging room; mainly for high-performance electronic products (such as: computer complete machine, display, terminal machine, automotive electronic product, power supply, motherboard, monitor, exchange charger, etc.) A high temperature and harsh environment test equipment is an important experimental equipment to improve product stability and reliability, and an important production process for various manufacturers to improve product quality and competitiveness. This equipment is widely used in power electronics, computers, communications, Biopharmaceutical and other fields
The main aging test items are:
1. Light aging test + wavelength range: xenon arc lamp aging (300-800nm), ultraviolet lamp aging (280-400nm), carbon arc lamp aging (300-700nm), metal halide lamp aging (280-3000nm).
The main reference standards are:
Xenon arc lamp aging: GB/T 16422.2 (equivalent to GB/T4892.2), GB/T 8427, GB/T 1865 ASTM D4355, ASTM G155, JIS K5600, etc.
UV light aging: GB/T 16422.3 (equivalent to GB/T4892.3), GB/T 18950, ASTM G 154, ASTM D-4674, ASTM_D4674, JIS K 7350, etc.
Carbon arc lamp aging: GB/T 16422.3 (equivalent to GB/T4892.3), ASTM G153, JIS D 0205, JIS B 7753, etc.
Metal halide lamp aging: GB 2423.24, IEC60068-2-5, DIN75520, etc.
Light aging is the main aging damage to materials used outdoors, and materials used indoors are also subject to a certain degree of light aging. The three main light sources for simulated light aging have their own advantages. The carbon arc lamp was invented and used early, and the measurement system was established earlier. Many Japanese standards and fiber material standards use carbon arc lamps, but because of the higher price of carbon arc lamps , The performance is not stable enough (the lamp needs to be replaced after 90 hours of use), and it has been gradually replaced by xenon arc lamps and ultraviolet lamps. The xenon lamp has a great advantage in simulating natural light, and the price is relatively low, which is suitable for the use of most products. The UV lamp produces light below 400nm, which can better accelerate the damage to the material in the simulated natural light. The acceleration factor is higher than that of the xenon lamp, and the light source stability is better than that of the xenon lamp, but it is easy to produce damage to the output of unnatural light ( Especially UVB lamps).
Main application scope: outdoor and indoor use of rubber, plastics, coatings, ink products, communication, electrical appliances and other equipment shells, auto parts, motorcycle accessories
2. Heat aging
Main reference standards: GB/T 7141, ASTM D3045, JIS K 6257, etc.
GB/T20028 vulcanized rubber or thermoplastic rubber uses Arrhenius diagram to calculate life and high service temperature.
The heat aging box has a program function, which can set the temperature change through the program, which is suitable for the needs of heat aging of various products.
Main application range: heat aging test of various products, such as PCB board, insulating rubber in electrical appliances, products with long-life requirements (such as the jacket material for cable-stayed bridges, the service life should be more than 20 years), etc. The progress of the product, the change of product performance, and the reliability of product use.
3. Damp heat aging
Main reference standards: general standards include GB/T 15905, GB/T 2573, etc. In addition, the humidity and temperature change curve can be set according to different product standards and corporate standards, which is suitable for various complicated damp and heat aging tests. During the use of the product, it is susceptible to the dual effects of temperature and humidity. For some water-sensitive materials, such as PET, PBT, etc., a damp heat aging test is required to assess whether it is suitable for long-term use in a humid environment.
4. Salt spray aging
Main reference standards: GB/T 10125, GB/T 12000, ASTM D117, JIS Z2371 and other standards for neutral salt spray, acid salt spray, copper ion accelerated salt spray test. It is mainly used to simulate the corrosion effect of sodium chloride dissolved in water vapor in the atmosphere on the protection process of coatings, coatings, etc. and metal floor materials, especially in coastal areas and areas around inland salt lakes, where the salt content in the air is relatively high. It is easily corroded by salt spray. Main applicable products: all kinds of coatings, such as exterior architectural coatings, marine coatings, container coatings, etc., various coatings.
5. Ozone aging
Main reference standards: GB/T 7762, GB/T 24134, GB/T 13642, HG/T 2869, JIS K 6259, ASTM D 1149. Mainly investigate the ozone resistance of rubber (the rubber contains a large number of double bonds and is vulnerable to ozone attack, especially when it is used dynamically or stretched, the ozone damages the rubber more severely), and the new elastomers such as TPU and EPDM can also be investigated. Ozone resistance.
6. High and low temperature cycle
Main reference standards: GB/T 2423, JG/T 25 architectural paint coating freeze-thaw cycle resistance test method, etc., can be tested in accordance with the relevant test methods of high and low temperature cycles and freeze-thaw cycles in different product standards. Mainly used for testing of architectural coatings and equipment used in special environments.
