In the production process of many enterprises, the aging test experiment of products is a testing item that many enterprises must do. It is currently particularly common in many export enterprises and can be used to detect product aging on the market. There are several types of experimental equipment tested. Suga tanning machines and xenon lamp aging tanning machines are typical representatives. So what are the similarities and differences between them? Shanghai Qianshi will briefly explain it to you:
Carbon arc lamp and xenon arc lamp are two types of photoaging test equipment with different light sources. Xenon arc lamp is used in testing far more than carbon arc lamp. .
Xenon arc lamp is the latest and best light source. By replacing the light filter, it can better simulate outdoor natural sunlight and sunlight through window glass. Xenon arc lamps were first used in the plastics industry. Because their test results can better simulate the actual weather resistance of products, many international specifications such as AATCC, ASTM, ISO and government organizations use xenon arc lamps. The textile industry, a traditional user of carbon arc lamps, has now changed its norms to use xenon arc lamps.
There are two types of carbon arc lamps, one is a closed carbon arc lamp and the other is a sunlight carbon arc lamp. Both carbon arc lamps were used in early equipment, the former was originally used for lightfastness testing of textiles, and the latter was initially used for lightfastness testing of coatings. The luminous body of a closed carbon arc lamp is a set of carbon rods, and electric current passes through the carbon rods to emit arc light. However, the spectral energy distribution (SPD) of the arc light emitted by the carbon rod is quite different from the SPD of natural sunlight. There is neither the short-wave ultraviolet radiation in natural sunlight nor the high-intensity energy of sunlight between 400-800nm. The matching between the SPD of daylight carbon arc lamps and the SPD of daylight has improved, but there is still a big difference in the spectral distribution between the two between 50 and 350nm. Therefore, overall, the correlation between carbon arc lamp test results and the actual weather resistance of the product is relatively poor. At present, some old standards or specifications still use carbon arc lamp equipment.
Another traditional industry that uses carbon arc lamps is the automotive industry. However, in recent years, most European and American automobile companies have generally adopted xenon arc lamps. Currently, most of the Japanese automobile companies that still use carbon arc lamps are Japanese automobile companies. However, many Japanese automobile companies have also included xenon arc lamps in their specifications as a method of choice.