TCSAE134-2020 English PDF

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TCSAE134-2020: Aging resistance of automobile - Outdoor accelerated weathering test method of exposure with solar tracking concentration apparatus

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T/CSAE 134-2020	259	Add to Cart	3 days	Aging resistance of automobile - Outdoor accelerated weathering test method of exposure with solar tracking concentration apparatus

Similar standards

T/CSAE 159   QC/T 1029   QC/T 797   T/CSAE 126   T/CSAE 125   T/CEC 134   

Basic data

Standard ID: T/CSAE 134-2020 (T/CSAE134-2020)
Description (Translated English): Aging resistance of automobile - Outdoor accelerated weathering test method of exposure with solar tracking concentration apparatus
Sector / Industry: Chinese Industry Standard
Classification of Chinese Standard: T40
Word Count Estimation: 10,181
Date of Issue: 29/5/2020
Date of Implementation: 29/5/2020
Issuing agency(ies): China Society of Automotive Engineers

TCSAE134-2020: Aging resistance of automobile - Outdoor accelerated weathering test method of exposure with solar tracking concentration apparatus

---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 134-2020 Aging resistance of automobile - Outdoor accelerated weathering test method of exposure with solar tracking concentration apparatus ICS 43.020 T 40 Group standard Car anti-aging sun tracking concentrating outdoor acceleration Aging test method 2020-05-29 released 2020-05-29 Implementation Issued by Chinese Society of Automotive Engineering

Table of contents

Foreword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...1 4 Test site requirements...1 5 Equipment...1 6 Safety precautions...3 7 Specimen...3 8 Test procedure...3 9 Report...5 References...6

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that certain contents of this document may involve patents, and the issuing agency of this document does not bear the responsibility for identifying these patents. This standard was proposed by the Automobile Anti-Corrosion and Aging Branch of the Chinese Society of Automotive Engineering. Drafting organizations of this standard. Shenlong Automobile Co., Ltd., China National Electrical Equipment Research Institute Co., Ltd., Asia Pacific Materials Testing Technology Co., Ltd., Dongfeng Motor Group Co., Ltd. Technology Center, Q-lab Corporation China Representative Office, FAW-Volkswagen Asia Technology Center Co., Ltd., Zhejiang Jizhi New Energy Automobile Technology Co., Ltd., Guangzhou Synthetic Materials Research Institute Co., Ltd., SAIC Motor Group Co., Ltd. Passenger Vehicle Company, China First Automobile Group Co., Ltd. Research Institute, Chongqing Changan Automobile Co., Ltd., Weikai Testing Technology Co., Ltd., Shanghai Coating Research Institute Co., Ltd. The main drafters of this standard. Yang Jiao'e, Wang Shouhe, Wang Jun, Zhang Lingzi, Cheng Ge, Li Minghuan, Zhang Xiaodong, Sun Xinglei, Yu Huijie, Liu Dan, Wang Wentao, Yin Wenhua, Deng Jiazhan, Wang Jianbing, Luo Xiyuan, Wang Zhaotong, Ma Xudong, Zhang Weiqun. Automobile anti-aging sun-tracking concentrated outdoor accelerated aging test method

1 Scope

This standard specifies the terms and definitions of the Fresnel reflection system using the sun as the light source for the accelerated aging test of automotive exterior materials. Test site requirements, equipment, safety precautions, samples, test procedures and results. This standard is applicable to the Fresnel reflection system using the sun as the light source for accelerated aging test of automotive exterior materials. The equipment and methods specified in this standard can be used to determine the relative aging resistance of automotive materials exposed to sunlight, heat and humidity, provided that It is assumed that the mechanism of physical and chemical changes that decisively affect the accelerated aging rate of the material during the test has not changed. The test results of this standard can be used to compare the relative aging resistance of automotive exterior materials that have undergone a specific cycle test. Any accelerated exposure The exposure test cannot be regarded as a complete simulation of natural or on-site exposure, only when the performance level of the tested material can be used for comparison After it has been determined, the test results of this standard can be regarded as representative of the results of natural or on-site exposure tests.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. T/CSAE 67 Terms and Definitions of Automotive Weathering

3 Terms and definitions

The terms and definitions defined in T/CSAE 67 apply to this document.

4 Test site requirements

The test site should be flat and open, and no obstructions such as buildings and trees are allowed nearby, which will affect solar radiation. Buildings or barriers around the site The distance between the obstacle and the test equipment should be at least 3 times the height of the building or obstacle. It is best to choose a place with more sunshine and clean air.

5 equipment

The test equipment is an advanced biaxial natural accelerated aging test equipment. It is an outdoor exposure test equipment that can automatically arrive from early Track the sun at night, and can automatically compensate for the influence of different sun elevation angles caused by seasonal changes. At the same time, the Fresnel reflection on the test equipment The system can concentrate the full-spectrum sunlight on the test sample. This sun-tracking daylight concentration system increases the solar energy irradiated on the sample. The structure diagram of the test equipment is shown in Figure 1.It is composed of Fresnel reflection system, sun automatic tracking system, ventilation cooling system, spray system and other parts. a) Fresnel reflection system. There are 10 plane mirrors. The plane mirrors are placed at the tangent position of the parabola. During the test, the sun's rays are reflected by the plane mirror to the exposed area of the test sample. To ensure the quality of the sun’s rays after reflection, except It is required that the flat mirror should be flat, and should have high reflectivity in the ultraviolet and visible wavelength range from 295 nm to 700 nm. The spectral reflectance at 310 nm wavelength is greater than or equal to 65%. If the test reflectance is lower than 65%, the flat mirror should be replaced; b) Sun automatic tracking system. Ensure that the equipment is "facing" the sun, and the plane mirrors are in focus. The system consists of light sensors, Control system, horizontal rotating device and vertical rotating device. The light sensor is also called the photoreceptor, which is installed on the top of the air supply duct (Facing the sun), used to track the relative movement of the sun's rays, if there is a relative movement change, a deviation signal will be issued and controlled After the system is transformed, it is sent to the corresponding rotating device to adjust the device to focus; c) Ventilation cooling system. Composed of blower, air supply duct, etc., the system can guarantee air flow at a certain wind speed during normal test Through the surface of the sample, thereby limiting the over-temperature of the test sample surface. The temperature of the test sample surface on the test equipment The temperature of the surface of the test sample on the sun tracking but not concentrating device is generally not higher than 10 ℃; d) Spray system. The sample spray water should control the silicon content (less than 0.01 mg/L) and the total solid content should not exceed 20 mg/L. Have For these tests, the test sample needs to be sprayed and humidified at a certain stage in the test cycle, and the spray cycle is determined by the user. A blackboard thermometer can be installed on the test equipment in the sample test area. The blackboard thermometer is used to monitor the surface temperature of the test sample. The highest value reached. And install a blackboard thermometer on the surface of direct sunlight, compare with the data of the blackboard thermometer in the sample test area, and control the ventilation Whether the system is running.

6 Safety precautions

6.1 When using the test equipment, you need to take necessary eye protection measures to avoid ultraviolet and infrared light damage. 6.2 It is recommended that operators use sunscreen, wear loose long-sleeved clothes, wide-brimmed hats and other suitable coverings to prevent sunburn.

7 Specimen

7.1 At least one reference sample is exposed in each test. The aging mechanism of the reference sample shall be the same as the aging mechanism of the material being tested. It is best to use two reference samples, one with relatively good durability and one with relatively poor durability. 7.2 There should be at least 3 samples for each reference sample and test sample, so that the test results can be evaluated. 7.3 The maximum width of the specimen is 130 mm and the maximum thickness is 13 mm. 7.4 The leading edge of the sample installed closest to the airflow position should be aligned with the leading edge of the test area to avoid disturbing the uniformity of the airflow. 7.5 The test surface of the sample should be installed facing the reflector to receive the concentrated sunlight. 7.6 Rigid samples are installed without a backplane, and flexible samples are installed with a backplane. 7.7 The sizes of the samples are different, and they should be arranged and installed as shown in Figure 2.The installation method of the sample should not affect the uniformity of the cooling air flow. If the user and the test unit agree through negotiation, other installation methods can also be used.

8 Test procedure

8.1 When starting the test, point the photoelectric solar tracker of the test equipment toward the sun to obtain sunlight, and start the sprinkler system as required. often Regarding the spraying method, please refer to Table 1, and the test conditions can also be determined by the parties involved in the test. 8.3 The instrument used to measure direct total radiation or ultraviolet radiation is installed on the sun tracking system of the equipment, facing the sun. The radiometer should be calibrated regularly. 8.4 If it is inconvenient to measure the reflector mounted on the device, a small reflector that is easy to install and unload can be installed on the device to represent the mirror material of the entire reflective system. 8.5 Monitor and adjust the tracking system and the mirror reflection system to ensure that any position in the target area can receive visible light at any time during the day. 8.6 The test ends when the following conditions are met. -Reach the predetermined amount of ultraviolet or solar radiation; --Control the sample to reach a predetermined percentage of change; --The characteristic indexes such as gloss and color reach the predetermined performance decline.

9 report

9.1 The report should include the following information. --The location and details of the exposure site (such as longitude, latitude, altitude, etc.); --The spray cycle and direction used; --Water quality; --The time spent on exposure; --Direct ultraviolet radiation (280 nm to 400 nm, MJ/m²); --Total direct solar radiation (280 nm ~ 3000 nm, MJ/m²); --Accurate number of all samples; --Installation conditions (backplane or no backplane); --Any abnormal phenomenon that will affect the result, such as temperature limit; --The serial number and last calibration date of the instrument used to test ultraviolet radiation. 9.2 Optionally report the following information. --Total radiation accumulated every day; --Ambient temperature (the highest, lowest and average daily temperature); --Humidity (daily maximum, minimum and average humidity); --Inspection and test report. ......

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