Volatal substances in the car interior material will be condensed into fog on the windshield after heating. It is a fog characteristic, and its condensate is also called condensation component. The fog of the car interior material will prevent the sight of the driving through the windshield of the windshield. Under the conditions of unfavorable light conditions, it will affect the safety of driving. At the same time, because the condensate components are mostly harmful organic volatiles, the height of fog can also reflect the height of organic hair products in the interior material. Therefore, automotive manufacturers in developed countries have formulated restrictions on the foggy of automotive interior materials.
The principle of atomization test: Place the sample in a glass burn in the specified conditions, heated, and any volatile substance is condensed on the cooling glass plate or cooling aluminum foil. The atomization performance of the sample is represented by calculating the atomization or atomization amount.
In different atomization test standards, the interior materials are different, and the requirements of the atomized test parameters are also different. The specific parameters of several commonly used atomization standards are listed below:
The reflection method in the above standards is the same method as the gloss method. It can be seen from the timeline that the reflection method (gloss method) in the early standards uses DIDP as a reference reagent, and the weight method will use DOP as a reference reagent. Earlier DIN 75201: 1992-09 version also specifies that DOP as a weight as a weight The reference reagent of the law. In the recent standards, the reference reagents of the two methods are unified and both use DIDP. The requirements for test conditions are not much different, and in addition to QB/T2728, the other three standards have the same requirements for measurement parameters.
There are still many standards for atomization at home and abroad, including different enterprises, and also formulated their own corporate standards according to their own quality system requirements. For more standards, please pay attention to the later content.