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GB 32086-2015: Requirement of vertical flammability characteristic and test method for certain category automobile interior material
GB 32086-2015
Requirement of vertical flammability characteristic and test method for certain category automobile interior material
ICS 43.040.40
T24
National Standards of People's Republic of China
Specific kinds of automotive interior materials
Vertical combustion characteristics technical requirements and test methods
Issued on. 2015-10-09
2016-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard Chapter 3, Chapter 4 are mandatory, others are recommended.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard by the National Automotive Standardization Technical Committee (SAC/TC114) centralized.
This standard drafting units. China First Automobile Group Corporation Technology Center.
Participated in the drafting of this standard. Changchun Institute of Applied Technology and Belgium.
The main drafters of this standard. Wang Qing States, Zhangying Hong, Liuxian Wu, often red, Jianbing, Li Chunli, Li Yujie.
Specific kinds of automotive interior materials
Vertical combustion characteristics technical requirements and test methods
1 Scope
This standard specifies the particular kind of automotive interior material vertical combustion characteristics of technical requirements and test methods.
This standard applies to carry more than 22 passengers M3 class automotive interior curtains, sun shades and/or other materials inside the suspension does not apply
A standing passengers used city buses.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Combustion speed burningrate
Combustion ratio of the distance of the time spent in millimeters per minute (mm/min).
2.2
Interior materials interiormaterial
Curtains, shades, and/or other internal suspension material.
3 Technical requirements
Vertical burning rate should be less than 100mm/min.
Test Method 4
4.1 Principle
The sample is fixed to the vertical rectangular frame, the combustion chamber with a predetermined flame ignited sample measurement sample combustion distance and elapsed time.
4.2 Test equipment and apparatus
4.2.1 Sample holder
The sample holder should be a rectangular frame structure shown in Figure 1. Frame high 560mm, 150mm spacing by two parallel
Connecting rod composed of a fixed sample rod fixed needle. Fixed needle diameter should be less than 2mm, a length of at least 27mm. The sample holder
Ventilation hood is mounted on the respective inner stent, during the test to ensure that the holder is always in a vertical position.
The sample is mounted on a fixed pin, and some distance away from the frame, to be installed in the vicinity of the fixed needle diameter is 2mm, the height of at least
20mm positioning column.
4.2.2 platen
Using U-shaped plate to ensure that the sample in the sample holder vertical smoothness. U-shaped plate should be flat and rigid, with an appropriate material
Made, about the size of the sample holder dimensions, having a thickness of 1.0mm ± 0.1mm. Left and right sides of the platen diameter drilled approximately
4mm hole 12, the hole location should guarantee its center spacing equal to the sample holder is fixed on the distance between the needle (see Figure 1).
4.2.3 Gas Light
Gas lamps provide test fire source, which describes the structure and the need to comply with the provisions of Appendix A.
4.2.4 Gas
Gas lamps using gas for industrial use propane gas, butane gas or liquefied petroleum gas.
4.2.5 tag line
White mercerized cotton line, the line density maximum 50tex.
Millimeters
Explanation.
1 --- third marker; 5 --- positioning column;
2 --- second marker; 6 --- sample;
3 --- first tag line. 7 --- plate;
4 --- fixed pin; 8 --- gas lamps.
Figure 1 Sample holder
4.2.6 Stopwatch
Measuring time with stopwatch precision of not less than 0.5s.
4.2.7 steel ruler
Steel ruler 600mm above range, accuracy of 1mm.
4.2.8 fume hood
The sample holder should be placed in a fume hood, fume hood interior volume is 20 times the volume of the sample holder to 110 times, and a long hood,
Width and height must not exceed the size of any size in any one of the other two dimensions twice.
Before the test, the sample holder from the front position to finalize all measured at 100mm vertical velocity of air flow through the fume hood, the speed
Degree should be between 0.10m/s ~ 0.30m/s. You can use natural ventilation hood or adequate ventilation wind speed.
4.3 Sample
4.3.1 Size
Sample size is a long 560mm ± 2mm, width of 170mm ± 2mm, the thickness of the part thickness.
4.3.2 Sampling
And cut 3, respectively, in the warp and weft (or more) specimens combustion test. Sampling methods are as follows.
a) If the shape and dimensions of the parts meet the sampling requirements, should be part and cut the specimen.
b) If the shape and dimensions of the parts does not meet the sampling requirements can be made of the same material with the technology, structure and consistent standard sample parts
experimenting.
c) when the material supplied by the entire width required when the material is 100mm from the edge of the cut, and then the rest of equidistant, uniform sampling.
4.3.3 Pretreatment
Sample at a temperature of 23 ℃ ± 2 ℃, relative humidity of 50% ± 5% of the standard state for at least 24h, until the start of the test.
4.4 Test procedure
4.4.1 at a temperature of 10 ℃ ~ 30 ℃, relative humidity of 15% to 80% of the environmental conditions of the test.
4.4.2 within the gas lamp in front of the bottom of the sample, located through the vertical centerline of the specimen surface of the specimen was vertical plane, gas lamps
Spindle tilt up, and the plane of the sample into a 30 ° angle from the top and lower edge of the sample gas lamp is 20mm, diagram shown in Figure 2
Shown. Gas lamps lit the gas lamp when placed vertically, adjust the flame height to 40mm ± 2mm, the distance is a gas lamp flame nozzle opening top
End distance. Before starting the first test, the flame should be stable combustion in this state at least 2min, then turn off.
Millimeters
Explanation.
1 --- sample;
2 --- sample holder;
3 --- positioning column;
4 --- fixing needles;
5 --- gas lamps.
Figure 2 a schematic view of a sample gas lamp relationship with
4.4.3 The pretreated sample is fixed on the sample holder of the fixed needle, close to the positioning column, then the pressure on the U-shaped plate, guarantee a fixed needle
Each hole through the upper platen, a sample from the frame at least 20mm. On the sample holder is mounted to the top of the combustion chamber frame, try to ensure that
Like vertical.
4.4.4 Place the sample plate before the tag line level shown in Figure 1, the distance from the surface of the sample tag lines are 1mm and 5mm,
To ensure that the sample marker relative position marker should maintain sufficient tension.
4.4.5 lit gas lamps, adjust the flame height to 40mm ± 2mm. Gas lamp placement angle adjustment, so that the gas lamp center axis inclination, and
Where the sample into a 30 ° angle between the plane of the sample ignited 5s in a gas lamp flame, immediately off the gas lamp and reset it.
4.4.6 If the specimen can continue to burn 5s, it is considered to have been ignited. If the sample does not burn, then that is not lit, the other to be re
After a pretreatment of samples tested, but the sample gas lamp flame ignited in time is 15s.
4.4.7 If any of either set of three samples of a result over 50% minimum, you should take the same direction again into another set of samples
Line test. If any group of three sample 1 or sample 2 did not burn to the third marking line, then take the same direction, a set of three additional test
Samples to be retested.
4.4.8 The following measuring time in seconds (s).
a) From the beginning to the ignition flame blow marked the first time t1 line;
b) From the beginning to the ignition flame blow second time mark line t2;
c) From the beginning to the ignition flame blow marked the third time t3 line.
4.5 Calculation
For the flame at least a sample of the first line to mark the combustion speed (vi) is calculated as follows.
vi = 60 × (Di/ti)
Where.
vi --- burning speed, in millimeters per minute (mm/min);
i --- flame to the first/second/third tag line, respectively, 1, 2 and 3;
Di --- flame to burn from the first/second/third markers, in millimeters (mm);
ti --- blown flame burning time of the first/second/third markers, seconds (s).
Burning rate of each sample taken v1, v2 and v3 maximum value, a burning rate of the sample in three or more samples of burning rate
The maximum value is the test results, the results rounded to the nearest whole number.
The results are shown burning velocity 4.6
4.6.1 If the sample in the flame ignited 15s can not continue to burn 5s; or flame before reaching the first marker self-extinguishing, are recognized
To meet the requirements of burning rate, both expressed as 0mm/min.
4.6.2 If the sample can burn, and the flame over the first marker, pressing 4.5 requires combustion rate, the combustion speed results are shown
A vi- Found mm/min, e.g. v1-50mm/min.
4.7 Test Report
The test report shall include the following.
a) part name, model specifications, materials, production units, unit test, test date and test people;
b) the number of samples, sample thickness;
c) Test Results. time to ignition, the combustion time, the combustion from the combustion speed, the combustion process and phenomenon.
Appendix A
(Normative)
Description and structure of the gas lamps
A.1 Description
Gas lamps provide flame, which should facilitate the control valve structure to adjust the flame height and flame, the flame height can be 10mm ~ 60mm
Be adjusted between.
A.2 Structure
Gas lamp structure is shown in A.1a) shown, it consists of three parts.
A.2.1 gas nozzle
Gas nozzle inner diameter of 0.18 0.03 0 mm, and the dimensions of the structure as shown in A.1b) FIG.
A.2.2 Gas Lamp
Gas Lamp from the air chamber, gas mixing zone, and a gas outlet diffusion region 4 parts, structure and size as shown A.1d) FIG.
The air chamber has four gas tube of 4mm diameter air inlet orifice, the front edge of the hole and the nozzle tip close to horizontal.
Diffusion region is tapered, a gas inlet inner diameter 1.7mm, inner diameter of the outlet 3.0mm.
A.2.3 flame stabilizer
Flame stabilizer structure and dimensions as shown A.1c) FIG.
Millimeters
a) Schematic diagram of a gas lamp
Figure A.1 gas lamp structure and size schematic