QC/T 1016-2022Door trim panel assemblies for passenger cars (English PDF)

4.1 General requirements

4.1.1 The door trim panel assembly shall meet the requirements of this document AND be manufactured according to the product drawings and technical documents, which are approved by the prescribed procedures. The size and tolerance of the door trim panel assembly shall meet the requirements of the drawings or related documents.

4.1.2 The internal protrusions of the door trim panel assembly shall comply with the relevant provisions of GB 11552.

4.1.3 The exterior surface of the door trim panel assembly shall be free from sharp edges, cracks, marks, dirt. It shall have no air bubbles, cracks, paint flow marks, surface warping, blisters, pitting or other defects, that affect the appearance.

4.1.4 The color, luster, pattern of the surface of the door trim panel assembly shall be consistent with the color plates or samples, which are approved by the prescribed procedures.

4.2 Performance requirements

4.2.1 Dimensional stability

The door trim panel assembly shall have no obvious deformation. The dimensional changes shall meet the drawing requirements or technical documents.

4.2.2 Chemical resistance

After the test, there shall be no surface softening, peeling, discoloration, fading on the surface of the specimen. When rated according to GB/T 250, the color fastness level shall be higher than or equal to level 4.

4.2.3 Color fastness to rubbing

Only for the soft coating surface and decorative layer, after repeated rubbing, the color fastness level of the specimen surface shall be higher than or equal to level 3, when evaluated according to GB/T 250; the color fastness to staining of the rubbing cloth shall be more than or equal to level 3, when evaluated according to GB/T 251.

4.2.4 Scratch resistance

Only for the surface of injection molded leather parts, the deltaL of the scratched area of the specimen, after the test, shall be less than or equal to 2.0.

4.2.14.2 Strength of grab handle/pull handle

During and after the test, there shall be no visible damage or separation from the door panel; the grab handle/pull handle shall remain connected to the sheet metal, without loss of function.

4.2.14.3 Map pocket strength

Only for the fixed map pocket, there shall be no visible damage or separation from the door panel, during and after the test; the door trim panel must remain connected to the sheet metal, without loss of function.

4.2.15 Durability

4.2.15.1 Durability of armrests

After the test, the armrest shall not be separated from the door trim panel or lose its integrity; the armrest shall have no visible defects, such as cracking, looseness or abnormal noise; it has no loss of function.

4.2.15.2 Durability of grab handle/pull handle

After the test, the grab handle/pull handle shall show no visible damage or separation from the door trim panel. The grab handle/pull handle shall remain connected to the sheet metal inside the door, without loss of function.

4.2.15.3 Durability of map pocket

For fixed map pockets only, after the test, the map pocket must not show visible damage or separation from the door trim panel. The map pocket shall remain connected to the door inner sheet metal, without loss of function.

5.1 General inspection

5.1.1 Test environment conditions

Unless otherwise specified, the environmental conditions of the test shall be a temperature of 23 °C ± 5 °C and a relative humidity of 50% ± 10%. Each of the following performance tests shall comply with this environmental condition; the room temperature that appears below is this environmental condition.

5.1.2 Conditioning

Before the test, the specimen shall be placed in an environment, which has a temperature of 23 °C ± 2 °C and a relative humidity of 50% ± 10%, for at least 48 hours.

For paint or water transfer parts, it needs to be placed in an environment, which has a temperature of 23 °C ± 2 °C and a relative humidity of 50% ± 10%, for at least 168 hours.

5.1.3 Appearance

Visual evaluation.

5.2 Performance test

5.2.1 Dimensional stability

5.2.1.1 Specimen

Door trim panel assembly.

5.2.1.2 Test procedure

Dimensional measurements are made prior to testing. Fix the door trim panel assembly on the tooling, according to the actual vehicle installation state. Put it into the high temperature test chamber. The storage temperature is 85 °C ± 3 °C; the storage time is 4 h. After storage, take out the sample. Place it at room temperature for 4 hours. Then conduct visual evaluation. Use special inspection tool, three-coordinate measuring instrument, non-contact or equivalent measurement method, to make measurement.

5.2.2 Chemical resistance

5.2.2.1 Specimen

Cut flat specimen, which has a size of not less than 50 mm x 100 mm from the surface of different materials of the door trim panel assembly; the number shall be at least 5 pieces. Each surface material shall be sampled separately, for testing.

5.2.2.2 Test procedure

Add about 1 mL of artificial perspiration (according to GB/T 3922), 0.5% soapy water, 75% alcohol, windshield cleaning fluid (GB/T 23436), on the surface of the specimen, respectively. Let it stand for 5 minutes. Then use cotton cloth to absorb it dry. Then place it in an environment of 23 °C ± 2 °C and relative humidity of 50% ± 10%, for 24 hours. Visually evaluate the change of the test area on the surface of the specimen.

Evaluate the color fastness level of the test area, according to GB/T 250.

5.2.5.1.2 Sample pretreatment

Before the start of the test, remove the outer packaging. Put the sample face up. Place it in a clean room, which has a controlled temperature, humidity and pollutant background, for 24 hours. The environmental conditions of the clean room are as follows: the temperature is 23 °C ± 2 °C, the relative humidity is 50% ± 10%, the background concentration of pollutants toluene is less than or equal to 20 µg/m3; formaldehyde is less than or equal to 20 µg/m3.

5.2.5.1.1 Sample preparation, packaging, transportation

The sample is in the supply state. Within 24 hours of production off the production line, it is sealed and packaged by aluminum foil and/or odorless polyethylene film, that is non-polluting to the sample. Avoid direct exposure to strong light or high temperature, during sample transportation, to avoid package damage. Sampling of volatile organic components and aldehydes and ketones shall be completed, within 14 days after the sample is off-line.

5.2.5.1.3 Gas incubation and sampling

The gas cultivation and sampling of the volatile organic components and aldehydes and ketones of the assembly are carried out, in accordance with Appendix A.

5.2.5.1.4 Measurement and result calculation

a) For the determination and analysis methods of volatile organic components, refer to Appendix B of HJ/T 400;

b) For the determination and analysis methods of aldehyde and ketone components, refer to Appendix C of HJ/T 400.

5.2.5.2 Assembly odor characteristics

5.2.5.2.1 Requirements for odor evaluators

Odor evaluators shall be trained and passed the examination, according to the relevant provisions, at least 3 evaluators required.

5.2.5.2.2 Sample preparation, packaging, transportation

Same as 5.2.5.1.1.

5.2.5.2.3 Sample pretreatment

Same as 5.2.5.1.2.

5.2.5.2.4 Gas cultivation and odor detection

a) The odor test of the assembly can be carried out alone, OR after the sampling of volatile organic components and aldehydes and ketones is completed. The odor identification can be carried out. The gas cultivation process is the same as 5.2.5.1.3.

b) After the packaged sample is placed in an oven, at a constant temperature of 65 °C ± 2 °C for 2 ~ 2.5 hours, the odor evaluator opens the air bag seal; close the nose to about 2 cm ~ 3 cm away from the bag mouth, to slowly inhale the gas. Evaluate and record the odor level of the parts assembly, according to the odor intensity level described in Table 2.

c) After each odor evaluator conducts the odor evaluation, the air bag shall be closed immediately and handed over to the next evaluator, to repeat the above evaluation process.

d) For each odor test, at least 3 odor evaluators shall evaluate the odor level.

e) The odor intensity is divided into 6 levels. When the intensity is between the two levels, it is allowed to be rated as 0.5 level. The average of the evaluation results of all evaluators is taken as the final result.

f) When there is a difference of 2 levels or more in the evaluation results among the assessors, the result is considered invalid AND the test must be repeated.

5.2.6 Light aging resistance test

5.2.6.1 Specimen

Cut flat specimens, which have a size not less than 70 mm x 140 mm, from the surface of different materials on the door trim panel assembly; the number shall be at least 3 pieces. Among them, 1 piece is reserved for the appearance evaluation after the test, whilst the other 2 pieces are used as parallel specimens.

5.2.6.2 Test procedure

Fix the specimen on the sample holder of the xenon photometer. Carry out 3 cycles of continuous light, according to the exposure condition 3 of GB/T 16991-2008. After the test, visually evaluate the appearance change of the test area on the surface of the specimen. Visually evaluate the color fastness level of the surface of the specimen, according to the requirements of GB/T 250.

5.2.7 Anti-sticking

5.2.7.1 Specimen

Take a flat specimen, which has a size not less than 70 mm x 140 mm, from the surface of the door trim panel assembly; the quantity is 1 piece. At least one surface of the specimen shall be smooth and free of grain.

A.1 Sampling principle

Place the sampling bag, which contains the sample, in a temperature-adjustable oven, to accelerate the rate of emission of volatile organic components in the sample, through high temperature. After a certain period of time, the organic matter released from the sample is qualitatively and quantitatively analyzed, by the gas collected in the bag.

A.2 Sampling device

A.2.1 Sampling bag

Use sampling bags, which have a volume of 2000 L and good airtightness. The sampling bag needs to be cleaned, before the experiment. After cleaning, the bag shall be inspected, according to the test method of the actual sample. The test results shall meet the following requirements:

a) The volatility test result of a single volatile organic component is less than 20 ng/tube;

b) Test results of volatilization of single aldehyde and ketone components: Formaldehyde is less than 150 ng/tube, acetaldehyde is less than 100 ng/tube, acetone is less than 300 ng/tube, other components are less than 100 ng/tube.

A.2.2 Gas collection device

The gas collection device shall meet the requirements in Table A.1.