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Your location: Home > Related Articles > Standard method for fog testing of automobile parts أداة الاختبار –

Standard method for fog testing of automobile parts أداة الاختبار –

Author:QINSUN Released in:2023-09 Click:16

Standard atomization test method for atomization performance testing of automobile parts

1. Introduction to applicable products for atomization performance testing

Atomization refers to the evaporation of gases emitted from the car\'s plastic interior trim. Condensation of organic and vaporized substances on glass, especially windshields. When lighting is poor, atomization and condensation can affect windshield visibility. Additionally, these harmful substances can poison people unconsciously. More seriously, this amounts to chronic suicide. They are the main automotive interior decoration materials. Required items.

Suitable for non-metallic fog value test instruments for vehicles, such as headliners, floor mats, luggage compartment mats, goggles, brackets, handlebars , leather decorations,steering wheels, seat belts and other non-metallic materials. Evaluation of the fogging performance of its volatile components at high temperatures can also be used to determine the high temperature fogging phenomenon of xenon lamps in front of cars.

The standard is:

DIN 75201 (Determination of the atomization performance of materials used in automotive interior equipment)

ISO 6452 (Rubber, plastic, artificial leather - Determination of haze characteristics of trim parts)

SAE J1756 (Test method for haze characteristics of automobile interior parts)

QB/T 2728 refers to \"volatile organic compounds and aldehydes and ketones in vehicles\" \"Method for sampling and determining similar substances\"

By carrying out atomization tests on automobile interior decoration materials , substance controlvolatiles in these materials can be obtained to effectively reduce environmental pollution in the vehicle. . It has become an important way for interior material manufacturers to control product quality.

2. Fog test method

There are many internal national and national standard fog test methods for automotive interior materials. These standards concern a total of three types. Test methods: gloss method, gravimetric method, mist method.

3. Principle of the atomization test

The sample is heated in the atomization cup and begins to volatilize. The volatile gas is cooled in the cooling chamber. Condensation on a glass plate or aluminum foil. After the condensation process is completed, remove the glass plate or aluminum foil, measure the atomization value or the weight of the condensed components of the plaque of glass or aluminum foil and compare them with the data before condensation to obtain the atomization and volatilization characteristics of the sample.

Three measurement methods:

Gloss method: The gas evaporated when the sample is heated in the misting cup is condensed on the glass plate at low temperature, and the gas is condensed on the glass plate before and after By comparing and calculating the gloss value, the haze value of the sample can be obtained.

Haze method: the gas evaporated from the sample heated in the misting cup is condensed on the glass plate at low temperature. By comparing and calculating the haze value of the glass plate before and after condensation, the fogging value of the sample can be obtained.

Gravity method: the sample is heated in the misting cup and the evaporated gas is condensed on the aluminum foil at benough temperature. By weighing the weight change of the aluminum foil before and after condensation, the atomization-condensation weight of the sample can be obtained.

Fourth, atomization test equipment structure and technical indicators

Mainly consist of high temperature constant temperature tank, low temperature constant temperature tank, cooling plate, misting cup, It consists of misting glass plate, measuring device, sampler and accessories, and can complete test processes such as sampling, heating, condensation and testing.

The technical specifications of the atomization test equipment are as follows:

The temperature range of the high temperature tank: ambient temperature to 150°C (an ambient temperature to 280°C is purchased separately)

Temperature controlre of high temperature tank Accuracy: ±0.1℃ (150℃)

Low temperature tank temperature range: 0~100℃

Accuracy of tank temperature control low temperature: ±0.1℃

High temperature tank Overall dimensions: 670 mm (L) × 490 mm (B) × 540 mm (H)

Low temperature tank dimensions overall: 400 mm (L) × 220 mm (B) × 520 mm (H)

Net weight of high temperature tank: 32 kg (excluding heat transfer fluid)

Net weight low temperature tank capacity: 15 kg (excluding heat transfer fluid)

Power supply: AC 220V 50Hz

Applicable standards for atomization tests:

DIN 75201, ISO 6452, SAE J1756, QB/T 2728, BS EN 14288, PV 3920, PV 3015, ES-X83231, NES M0161, D45 1727, GM 9305P, TSM 0503G