Atomization test
Project Introduction
Fogging/condensate is the condensation of volatile substances emitted from automotive interior parts and materials on the glass. Car interior decoration materials, such as leather, plastics, textiles, and adhesives for bonding materials, all contain some volatile substances. Especially under sunlight, the temperature inside the car increases, which will aggravate this volatilization. Volatile gases condense on car windows or windshields, causing poor visibility and affecting the driver's vision and driving safety; some volatile substances can also affect the health of drivers and passengers. In order to reasonably control the generation of volatile substances, it is necessary to conduct fogging tests on materials used for automotive interiors. Materials with fogging values exceeding the standard indicators will not be used for automotive interiors.
Applicable product range
The atomization test is suitable for the evaluation of the evaporation of volatile components of automobiles, aircraft and other interior materials at high temperatures, such as automotive interior plastic parts, polyurethane, textiles, leather, adhesives, non-woven fabrics, thermoplastic elastomers and other materials. It can also be used to measure the high-temperature fogging phenomenon of argon lamps in front of cars.
Detection method
At present, there are many international and domestic haze test standards for automotive interior materials. These standards involve a total of three test methods: gloss method, gravimetric method, and haze method.
Glossiness method: The gas evaporated when the sample is heated in the fogging cup is condensed on the low-temperature glass plate. By comparing and calculating the gloss value of the glass plate before and after condensation, the fogging value of the sample can be obtained.
Haze method: The gas evaporated when the sample is heated in the fogging cup is condensed on the low-temperature glass plate. By comparing and calculating the haze value of the glass plate before and after condensation, the haze value of the sample can be obtained.
Gravimetric method: The gas evaporated when the sample is heated in the fogging cup is condensed on the low-temperature aluminum foil. By weighing the weight change of the aluminum foil before and after condensation, the weight of the sample's atomization-condensation product can be obtained.
Standard reference
In the 1970s, some large European automobile manufacturers began to study the fogging characteristics of automobile interior parts. In the early 1980s, the German Automotive Standards Drafting Committee and the Composite Materials Standards Drafting Committee jointly formed a "fogging" working group to study the fogging characteristics. Systematic research was conducted on the test methods and the reproducibility of the methods, and the corresponding standard DIN75201 "Determination of the windscreen fogging characteristics of trimmaterials in motor vehicles" was released in 1992.
Subsequently, the American Society of Motor Vehicles Engineers and the International Organization for Standardization made some modifications based on DIN75201 and promulgated relevant standards ISO 6452 and SAE J1756. According to the above standards, the world's major automobile manufacturing companies have promulgated enterprise standards for fogging properties and have put forward relevant requirements for the fogging properties of automotive interior parts.
Please see the table below for various standards and related test methods.
Standard
full name
Measurement methods
Volkswagen PV3015
"Determination of Condensed Components"
gravimetric method
Volkswagen PV3920
"Determination of Haze Value of Non-metallic Interior Materials"
Haze method
Toyota TSM0503G
"Determination of Condensed Components" Glossiness method, gravimetric method
Germany DIN 75201
"Determination of Atomization Performance of Materials Used in Automotive Interior Equipment"
Glossiness method, gravimetric method
American SAE J1756
"Test Method for Determining Haze Characteristics of Automotive Interior Parts"
Glossiness method, gravimetric method
ISO 6452
"Rubber, Plastic, Artificial Leather—Determination of Haze Characteristics of Automotive Interior Parts"
Glossiness method, gravimetric method
QB/T 2728
"Leather - Physical and Mechanical Testing - Determination of Atomization Properties"
Glossiness method, gravimetric method
Nissan NES M0161
"Test Method for Fogging of Interior Materials"
Haze method
Mitsubishi ES-X83231
"Fogging of Interior Materials"
Haze method, gravimetric method
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Atomization test Images
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