Automotive Interior Materials Smoke Density Test Analysis أداة الاختبار –

Smoke Density Testing and Analysis of Automotive Interior Materials

The flame retardant and flame retardant performance of various vehicle interior materials is the key to controlling vehicle fires. It can be seen that various countries and regions have developed detailed regulations on the combustion performance of vehicle interior materials. Combustion safety test items stipulated in these standards and regulations include: horizontal burning, vertical burning, dripping property, smoke density and toxicity, oxygen index, combustion quality of wires and cables, flammability performance of materials, smoke generation performance, flame spread performance, thermal performance. flooring materials radiation performance, calorific value, etc. Relevant standards and regulations require maVehicle interior materials carry out combustion safety project testing and laboratory results evaluation. Finally, based on the combustion test results of the material, it is evaluated whether the material can be used inside the vehicle to reduce the number of interior materials as much as possible. Causing a fire hazard.

Generally speaking, the current quality requirements for automobile interior materials at all levels are mainly divided into three parts: ① General performance of interior materials, such as raw material composition, physical properties , chemical properties, aging performance, etc.; ② Toxic and harmful release indicators of indoor materials, such as odor, formaldehyde, haze, organic matter emissions, etc. ; ③ Combustion safety performance of interior materials, such as perfHorizontal combustion performance, vertical combustion performance, droplet test, smoke density, oxygen index, combustion level classification, etc.

To this end, this article focuses on the smoke density test analysis of automobile interior materials:

1. Test instrument : Smoke Density Tester

2. Test Standard: GB /T8627-2007

3. Test principle: Measure the smoke generated when the material is burned. The reflection of light by solid dust causes a loss of luminous flux, thus evaluating the smoke density value.

4. Instrument parameters:

1. Gas source: 95% propane gas, or gas of equivalent purity (prepared by the customer) ;

2. Lit lamp: Bunsen burner, length 260 mm, nozzle diameter 0.13 mm, angle of 45° with the smoke box;

3. Photoelectric system: the sourcee of light is bulb, power 15W, working voltage 6V;

4. Smoke density measurement range: 0~100%;

5. Accuracy of smoke density measurement: ±3%;

6. Receiver: It is a silicon photovoltaic cell. 0% transmittance means no light passes through, and 100% transmittance means light passes completely unobstructed;

7. The focal length after processing: 60~65mm;

8. Main burner working pressure: 276 KPa (adjustable);

9. Auxiliary burner pressure: 138KPa (adjustable).

5. Test conclusion:

A lot of smoke will be produced when the materials burn, and smoke density is the key to assessing the safety of burning materials is an important indicator of . The smoke density is high, which not only affects the vision of rescue and escape, but also the graThe amount of smoke produced by combustion can easily cause suffocation and death.

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