The influence of the external environment on the UV aging test chamber during the test

The ultraviolet aging test chamber has a mandatory regulation for the test environment: to determine the harm
caused by the amount of solar radiation on the road surface to the machinery and equipment and electronic devices.

The environmental test chamber should be equipped with equipment
that can maintain the required temperature, cyclone rate and ambient humidity standards.

The key to environmental element hazards is reflected in the following six levels: 1.
Box temperature; 2.
Cyclone rate; 3.
Surface environmental pollution; 4.
Ambient humidity; 5.
Reactive oxygen species and other environmentally polluting vapors; 6.
Support frame and installation
.

The following is the detailed content of these six levels: 1, the temperature in the box: in the direct injection link or the stop link, the temperature in the box should be required by the experimental procedure process to be controlled, and the relevant standards should be based on the main purpose of the machine or equipment or components to require the temperature level
to be exceeded in the direct shooting link.

2, cyclone rate: (1) close to the surface of the sample of the cyclone rate size in addition to the hazard of the test product temperature, and even make the monitor radiation intensity of the open temperature difference stack appear obvious deviation
.

(2) In the geographical environment, the probability of a clear amount of solar radiation and a wind force of zero du te standard is very small, so when it is necessary to identify the harm of different winds to specimens such as machinery and equipment or components, it should be required to actually stipulate; 3, surface environmental pollution: dust and other surface air pollutants will seriously change the digestion and absorption characteristics of the surface layer of the illuminated block, and ensure the cleaning of the test product during the experiment; 4, environmental humidity: a variety of raw materials, architectural coatings and other chemical substances in different environmental humidity standards under the photochemical deterioration effect is very large, the provisions of the environmental humidity standards are not the same, the actual environmental humidity standards by the relevant standards clearly stipulated
.

5, reactive oxygen species and other environmental pollution vapors: the shell in the lamp source of short-wave ultraviolet radiation source caused by the reactive oxygen species, because the reactive oxygen species and other environmental pollution vapors will harm the deterioration of some raw materials throughout the process, unless the relevant standards require that this harmful substance be discharged out of the
box.

6, support frame and installation: the thermal characteristics of various support frames and installation methods will be seriously harmful to the temperature of the experimental samples, and it should also be considered that its thermal conduction characteristics can mean typical specific application conditions
.

From the left and right to grasp the environmental elements that harm UV aging test, people can pay attention to this problem in the application, prevent the detection results from being harmed, and can more reasonably exceed the actual effect
of the test.