GB/T 8323.2-2008: Plastic - Smoke generation - Part 2: Determination of optical density by a single-chamber test

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Scope

1.1 This part of GB/T 8323 specifies specimens of sheets, composites or specimens not exceeding 25 mm in thickness, placed vertically
In a closed cabinet equipped with a specified level of heat radiation source, the side that generates smoke from the exposed surface is measured with or without a pilot flame.
law. This test method is applicable to all plastics and can also be applied to the evaluation of other materials (eg rubber, textile coverings, painted surfaces,
Wood and other materials).
1.2 It should be noted that the optical density value of the smoke measured by this test method is measured under the specified shape and size of the sample or assembly.
It cannot be considered as its inherent basic performance.
1.3 This test is mainly used for R and D and fire safety engineering of buildings, trains, boats, etc., and cannot be used as the basis for building rating or
Other purposes. There is no basis for predicting the smoke density produced by materials exposed to heat or flame under other (actual) combustion conditions,
There is also no connection to the data obtained by other test methods. This test procedure eliminates the effects of irritants on the eye.
Note. This test procedure discusses the loss of vision due to smoke density, which is usually independent of irritancy, as explained in Section 1 of this standard.
1.4 It is important to emphasize that the smoke generated by the material will vary depending on the illuminance of the sample exposed. Therefore, at the junction using this method
If it is confirmed, the sample should be exposed to the specified illuminance of 25kW/m2 or 50kW/m2.

Basic Data

Standard ID	GB/T 8323.2-2008 (GB/T8323.2-2008)
Description (Translated English)	Plastic - Smoke generation - Part 2: Determination of optical density by a single-chamber test
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	13.220.40
Word Count Estimation	36,382
Date of Issue	2008-12-30
Date of Implementation	2009-08-01
Older Standard (superseded by this standard)	GB/T 8323-1987
Adopted Standard	ISO 5659-2-2006, IDT
Regulation (derived from)	National Standard Approval Announcement 2008 No.21 (Total No.134)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the sheet material, composite material or of a thickness not exceeding 25 mm sample assembly is placed vertically at the predetermined level of thermal radiation with a sealed cabinet, or in the case of the pilot flame is not used, the measurement methods smoke exposure generated from surface. This test method is applicable to all plastic, can be applied to evaluate other materials (such as rubber, textile coverings, painted surfaces, timber and other materials). Note that this test is measured as the optical density of smoke in the sample or combination of shapes and sizes predetermined conditions measured, can not be considered the basis of its inherent properties. This test is mainly used for research and development and building, train, vessels and other fire safety engineering, and not as a basis for building or other purposes of grading.