TCSAE104-2019 English PDF

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Basic data

Standard ID: T/CSAE 104-2019 (T/CSAE104-2019)
Description (Translated English): Laboratory xenon arc exposure test method of automotive exterior decoration coatings
Sector / Industry: Chinese Industry Standard
Classification of Chinese Standard: T40
Word Count Estimation: 18,119
Date of Issue: 4/15/2019
Administrative Organization: China Automobile Engineering Society

TCSAE104-2019: Laboratory xenon arc exposure test method of automotive exterior decoration coatings

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
T/CSAE 104-2019 Laboratory xenon arc exposure test method of automotive exterior decoration coatings Automobile exterior coating laboratory 氙 arc lamp aging test method

Content

Foreword...II 1 Scope...1 2 Normative references...1 3 Terms and Definitions...1 4 Test equipment...1 5 test samples... 2 6 Test procedure... 2 7 Results and evaluation... 2 8 Test report...3 Appendix A ...4 Appendix B ...5 Appendix C ...6 T/CSAE XX-2019 1 II

Foreword

This standard is in accordance with the rules given in GB/T 1.1-2009 "Standardization Work Guide Part 1. Standard Structure and Compilation" grass. Please note that some of the contents of this document may involve patents, and the issuing organization of this document is not responsible for identifying these patents. This standard was proposed and managed by the China Automotive Engineering Society. This standard was drafted. Shanghai Automotive Group Co., Ltd. Passenger Vehicle Branch, US Q-Lab Company China Representative Office, Asia Tairas Materials Testing Technology Co., Ltd., China Electric Apparatus Research Institute Co., Ltd., Weikai Testing Technology Co., Ltd. Technical Service Co., Ltd., BYD Auto Industry Co., Ltd., Chongqing Changan Automobile Co., Ltd., BASF Shanghai Coatings Co., Ltd. Company, PPG Coatings (Tianjin) Co., Ltd., Dongfeng Motor Corporation Technology Center. The main drafters of this standard. Hu Renqi, Di Chunfeng, Gong Wei, Luo Xiaoyu, Zhang Heng, Sun Xinglei, Zhuang Aipeng, Cheng Wei, Wang Jun, Zhang Xiaodong, Wang Yutong, Yang Jian, Gu Jing, Xiong Zhongzhou, Yang Jie, Huang Wei, Huang Enrong, Zhong Jiayi, Luo Yuyuan, Fu Dan, Gao Xiangda, Cai Zhiwei, Chen Shuhang. T/CSAE XX-2019 Automobile exterior coating laboratory 氙 arc lamp aging test method

1 Scope

This standard specifies the test method for accelerated aging of automotive exterior coatings using controlled irradiance Xenon arc lamps. This standard applies to automotive exterior coatings, other transportation tools, such as aircraft, trucks and subways, etc. Row.

2 Normative references

The following standards are essential for the application of this document. ASTM D7869 Standard Practice for Xenon Arc Exposure Test with Enhanced Light and Water Exposure for Transportation Coatings GB/T 1766 Paint and varnish coating aging rating method Standard environment for GB/T 2918 plastic sample conditioning and testing GB/T 6682 Analytical laboratory water specifications and test methods GB/T 16422.1 Test methods for exposure of plastics - Part 1 . General T/CSAE 67 Automotive climate aging terminology and definitions

3 Terms and definitions

The terms and definitions of Xenon arc lamps and blackboard thermometers covered by this standard are detailed in T/CSAE 67. Righteousness.

4 test equipment

4.1 The equipment manufacturer is responsible for equipment validation and provides key parameter specifications for the test equipment, including spectral energy distribution (SPD). Etc. to prove that it meets the requirements of this standard. 4.2 The user of the equipment shall install a suitable daylight filter so that the spectral energy distribution (SPD) of the xenon arc lamp equipment complies with Appendix A. Requirements. 4.3 The test equipment uses a xenon arc lamp as the irradiation source. The test equipment should be able to automatically control the irradiance and blackboard temperature in a certain way. Degree, cabinet air temperature and relative humidity inside the box. The test equipment shall ensure that the test conditions of the test sample are consistent. More detailed test equipment For a description, refer to GB/T 16422.1. 4.4 Unless otherwise agreed by the parties to the test, the test equipment shall be fitted with a blackboard thermometer. 4.5 Water used for spraying, humidifying or other purposes should not leave any deposits or stains on the test sample, solid particles in water The content should not exceed 1 mg/L, and the silica content should not exceed 0.1 mg/L. The determination of silica is referred to GB/T 6682-2008. 4.6 Prior to testing, verify the water sprinkler system in accordance with Appendix B. 4.7 In daily tests, different equipment may result in different test results, and the test results will depend on the characteristics of the test sample. The design of the test and test equipment, therefore, both parties should confirm the type of equipment before the test. T/CSAE XX-2019 4.8 The equipment user shall maintain and calibrate the test equipment according to the equipment manufacturer's instructions.

5 test samples

5.1 The dimensions of the test sample are determined by both parties. If the sample is cut from a large workpiece, the test parties agree, Make sure that the sample being sampled meets the test requirements and seals the sample. 5.2 The size of the test sample shall conform to the requirements of the sample holder. The installation method of the irregular test sample shall be agreed by both parties. 5.3 The number of samples is at least two, and one piece is used as a reserved sample for evaluation and storage in a dark, dry environment. 5.4 Test samples should be cleaned before testing and should not be used with cleaning agents that may attack the surface of the sample. 5.5 The aging inspection cycle is agreed by both parties. If the customer requests the results of different aging inspection cycles, it is necessary to provide enough sample.

6 test steps

6.1 The test sample shall be processed into a sample holder that can be installed in the test equipment and tested in accordance with the requirements of GB/T 2918. The sample is conditionally adjusted. 6.2 In order to maintain consistent test conditions, all vacancies on the sample holder are coated with inert, non-reflective materials (eg yang) Filled with a pole oxide film, etc., if the plate is significantly deformed, it should be replaced. 6.3 Expose the test sample according to the test conditions in Table 1, so that the surface of the test sample receives uniform irradiance and adopts the front side. The way of spraying. 6.4 During the test, the position of the test sample shall be rotated periodically (at least every two weeks) to further improve the test uniformity. Sex. If there are special requirements, both parties should agree on the way in which the test samples are rotated. Replacement position or sample inspection should be in each cycle After the end of step 10. 6.5 Different test samples that have mutual influence on the test results shall not be installed in the same test chamber for testing. Table 1 Test conditions (one cycle) step Every step time minute Test operation Irradiance at 340 nm W/(m2·nm) Blackboard temperature box air temperature relative humidity Step 1 240 Dark Spray --- --- 40 ° C ± 2 ° C 95% ± 10% Step 2 30 Illumination 0.40 ± 0.02 50°C ± 2.5°C 42°C ± 2°C 50% ± 10% Step 3 270 Illumination 0.80 ± 0.02 70°C ± 2.5°C 50°C ± 2°C 50% ± 10% Step 4 30 Illumination 0.40 ± 0.02 50°C ± 2.5°C 42°C ± 2°C 50% ± 10% Step 5 150 Dark Spray --- --- 40 ° C ± 2 ° C 95% ± 10% Step 6 30 Dark Spray --- --- 40 ° C ± 2 ° C 95% ± 10% Step 7 20 Illumination 0.40 ± 0.02 50°C ± 2.5°C 42°C ± 2°C 50% ± 10% Step 8 120 Illumination 0.80 ± 0.02 70°C ± 2.5°C 50°C ± 2°C 50% ± 10% Step 9 10 Dark --- --- 40 ° C ± 2 ° C 50% ± 10% Step 10 Repeat steps 6 through 9 3 times

7 Results and evaluation

After the end of the test, the sample should be evaluated within 24 hours of cooling to room temperature, including but not limited to the color change and gloss of the sample. Change, chalking, cracking, blistering, rusting, flaking, mildew, etc., refer to GB/T 1766-2008. T/CSAE XX-2019

8 test report

8.1 The test report must state the evaluation criteria used and the test results obtained. If necessary, there should be a test knot for each sample Fruit, the average test result of each group of the same sample and the photograph of the sample. 8.2 According to the purpose and requirements of the test, the test report may include the following. a) a description of the test sample; b) indicate the standard number; c) test results; d) the type and number of the aging equipment used for the xenon arc lamp; e) the filter combination of the xenon arc lamp aging equipment used; f) aging test time; g) If the test is evaluated in stages, the results of each stage shall be recorded; h) any difference from the specified test method; i) anomalies observed during the test; j) Test date. T/CSAE XX-2019

Appendix A

(normative appendix) Spectral energy distribution of xenon arc lamp with daylight filter A.1 The spectral energy distribution of the xenon arc lamp source with different types of daylight filters is shown in Table A.1. Equipment manufacturing that claims to comply with this standard It is the responsibility of the manufacturer to determine that all of its xenon arc lamp/filter combinations meet the spectral energy distribution in Table A.1 and provide maintenance procedures information. To minimize any spectral changes that may occur during normal use. Table A.1 Spectral energy distribution wavelength (nm) Total irradiance in the specified band (W/m2) Minimum value λ < 290 0.00 0.005 290 ≤ λ < 295 0.00 0.01 295 ≤ λ < 300 0.01 0.04 300 ≤ λ < 305 0.10 0.20 305 ≤ λ < 310 0.38 0.56 310 ≤ λ < 320 2.29 3.10 320 ≤ λ < 330 4.76 5.82 330 ≤ λ < 340 6.84 7.56 340 ≤ λ < 350 7.69 9.40 350 ≤ λ < 360 8.13 11.00 360 ≤ λ < 370 8.32 12.47 370 ≤ λ < 380 8.30 13.83 380 ≤ λ < 390 8.64 14.40 390 ≤ λ < 400 9.23 17.15 Note. The irradiance at 340 nm is 0.80 W/(m2·nm). T/CSAE XX-2019

Appendix B

(normative appendix) Water sprinkler system verification program B.1 Check the nozzle and sprinkler system for proper operation according to the manufacturer's instructions. The minimum water pressure required for the xenon arc lamp test chamber needs to meet the equipment Manufacturer's request. In order to prevent artificially causing the sponge to absorb more moisture, the test box should ensure that only the front side of the sponge is facing the xenon arc lamp. One side of the tube absorbs moisture. Prevent water spray and water from other sample areas from reaching the top, side and bottom of the sponge. B.2 Prepare the sponge according to step 1 (C.1) in Appendix C. B.3 Thoroughly soak the sponge and drip it. B.4 Tighten the sponge by hand until no dripping is observed within 15 seconds. This was identified as a damp sponge. B.5 Sponge Weighing. B.5.1 If a specimen holder is used, install each sponge in a separate exposure window of the specimen holder. Dry the sample holder and weigh it. Record the mass of each sample holder (including the sponge) to the nearest 0.1 g. B.5.2 If the specimen holder is not used, weigh and record the mass of each sponge to the nearest 0.1 g. B.6 In the xenon arc lamp test chamber, the sponge should be installed in the same direction as the specimen. The installation of the sponge is as follows. B.6.1 Rotary xenon arc lamp test chamber (such as. upper, middle and lower three layers) install a sponge on each floor. Direct the sponge towards the nozzle (also That is to say, the other side of the sponge is far from the nozzle). B.6.2 Flat-type Xenon arc lamp test chamber A sponge is installed in each of the three areas on the sample tray (for example. upper left corner, middle and lower right corners) position). B.7 Follow the manufacturer's instructions to set up and run the following cycle. 5 min dark water spray at cabinet air temperature 50 ° C, only Front water spray. B.8 Weigh the sponge again. B.8.1 If the specimen holder is used, remove the specimen holder from the xenon arc lamp test chamber. Dry the sample holder, weigh it, and record each sample holder The quality (including the sponge) is accurate to 0.1 g. B.8.2 If the specimen holder is not used, remove the sponge from the xenon arc lamp test chamber, weigh and record the mass of each sponge to the nearest 0.1 g. B.9 Calculate the water absorption to the nearest 0.1 g. The amount of water absorption is the difference in mass between step 8 (B.8) and step 5 (B.5). B.10 Repeat steps 4-9 (B.4 - B.9) twice (for a total of 3 times), as shown in step 6 (B.6) for each position of the xenon arc test chamber. A total of 3 measurements were obtained. The three measurements were averaged to calculate the amount of water absorbed by the xenon arc test chamber. B.11 The acceptance criteria for the water absorption in the xenon arc lamp test chamber are. the average value of the water absorption of the three sponges in the three special positions must comply with. Minimum value. 10.0 g Maximum. no maximum The maximum water spray is not defined and is intended to achieve water saturation of the coating system. If the minimum water spray amount meets the above requirements, the coating The system will reach water saturation under the specified test cycle. T/CSAE XX-2019

Appendix C

(normative appendix) Sponge verification program C.1 Cut a uniform sponge material up to a size of 57 mm wide, 127 mm long and 19 mm thick. The two sides of the sponge have a phase Do not use a multi-layer sponge for the same water absorption. C.2 Weighing of wet sponge C.2.1 Soak the cut sponge in at least 2 L of water at room temperature (23 ± 3 ° C) and thoroughly soak for at least 1 min. Or until The sponge is fully saturated. Different types of sponges need to reach saturation at different times. C.2.2 Tighten the sponge by hand until no dripping is observed within 15 seconds. On a calibrated balance with a range of at least 100.0 g Heavy, accurate to 0.1 g. The preferred sponge for this method is between 20.0 and 30.0 g after removing excess water. C.2.3 Clear the balance and remove the damp sponge. After that, the weighing of the sponge will only be the quality of the moisture it absorbs. C.3 Weighing of saturated sponge C.3.1 Soak the sponge in at least 2 L of water at room temperature and keep completely submerged for at least 1 min. C.3.2 After at least 1 min, remove the sponge in the water. Gently hold it vertically above the water container until the bottom of the sponge Drip a drop of water in 15 seconds. C.3.3 Turn the sponge to the horizontal to prevent more moisture from being lost and place it on the cleared balance and record the weighing result. C.3.4 Repeat steps C.3.1 through C.3.3 twice (3 times in total), and average the three results to determine the mass of water absorbed by the sponge. this will Used to define the saturated volume of the sponge (the difference in mass between the saturated sponge and the wet sponge). C.4 The acceptance criteria for sponge saturation capacity are as follows. Minimum value. 40.0 g Ideal value. 50.0 g Maximum. no maximum C.5 If the requirements in step 4 (C.4) are not met, the sponge material must be re-selected for testing. ......

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