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Weather resistance accelerated aging test method for automobile, which is capable of simulating littoral tropical desert climate environment in Middle East

A technology of climate environment and test method, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve problems such as time-consuming, months to years or even longer, weather resistance problems, etc.

Pending Publication Date: 2019-04-05
CHINA NAT ELECTRIC APP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the Middle East Gulf region mainly belongs to the coastal tropical desert environment, which is highly aging and corrosive. The special climate environment puts forward extremely high requirements for the weather resistance of automobiles. There will still be certain weather resistance problems when used in the region, which directly affects the market competitiveness of self-owned brand vehicles in the region
[0003] At present, the natural exposure test is still the most authentic and reliable test method for testing the weather resistance of automobiles, but it generally takes a long time, ranging from months to years or even longer, and due to the light, heat, water and other environments in the natural environment Conditions will change at any time, and the results of experiments carried out at different times have a certain degree of randomness, so the statistical value can only be obtained by repeated experiments
In addition, the Middle East is far away from my country, and most domestic companies cannot afford the cost of carrying out natural exposure tests locally, and there is no climate area similar to the coastal tropical desert climate of the Middle East in China

Method used

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  • Weather resistance accelerated aging test method for automobile, which is capable of simulating littoral tropical desert climate environment in Middle East
  • Weather resistance accelerated aging test method for automobile, which is capable of simulating littoral tropical desert climate environment in Middle East

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The service environment of automotive roof coating materials in the coastal tropical desert environment of the Middle East is simulated by using the xenon lamp salt spray cycle accelerated aging test method. Set xenon lamp test parameters: continuous light, irradiance intensity: 0.60W / m 2 @340nm; box temperature: 50°C, blackboard temperature: 85°C; relative humidity: 60%. Set the main parameters of the neutral salt spray corrosion test: concentration of sodium chloride solution: 1%, pH value: 7, box temperature: 40°C, and the form of salt spray spraying is atomization. According to the analysis of the service environment characteristics of automotive roof coating materials in the coastal tropical desert environment of the Middle East, the xenon lamp accelerated aging test for about 1500h can reach the comprehensive environmental stress value of outdoor exposure for 1 year, atmospheric corrosion level C4, and neutral salt spray corrosion Test 1440h can achieve the highe...

Embodiment 2

[0033] The accelerated aging test method of xenon lamp salt spray cycle is used to simulate the service environment of automobile bumper materials in the coastal tropical desert environment of the Middle East. Set xenon lamp test parameters: continuous light, irradiance intensity: 0.60W / m 2 @340nm; box temperature: 50°C, blackboard temperature: 80°C; relative humidity: 50%. Set the main parameters of the neutral salt spray corrosion test: the concentration of sodium chloride solution: 5%, the pH value: 6.8, the temperature of the box: 40°C, and the form of salt spray spraying is atomization. According to the analysis of the service environment characteristics of automotive roof coating materials in the coastal tropical desert environment of the Middle East, the xenon lamp accelerated aging test for about 900h can reach the comprehensive environmental stress value of outdoor exposure for 1 year, atmospheric corrosion level C4, neutral salt spray corrosion Test 1440h can achiev...

Embodiment 3

[0040] The service environment of automotive roof coating materials in the coastal tropical desert environment of the Middle East is simulated by using the xenon lamp salt spray cycle accelerated aging test method. Xenon lamp and neutral salt spray corrosion test conditions are identical with embodiment 2, and test total time is identical with embodiment 1. Based on this, the cycle period shown in Table 3 below can be set to achieve the aging and corrosion effect of the car roof coating material exposed to the sun for one year in the Middle East coastal tropical desert environment.

[0041] Table 3: Cycle times for accelerated weathering test methods for automotive roof coatings

[0042] cycle number

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Abstract

The invention discloses a weather resistance accelerated aging test method for automobile, which is capable of simulating the littoral tropical desert climate environment in Middle East. The method comprises the steps of: 1) according to the atmospheric aging environment feature of the littoral tropical desert climate environment in Middle East, setting xenon light aging test conditions comprisingirradiation intensity, blackboard temperature, box temperature, and relative humidity; 2) according to the atmospheric corrosion environment feature of the littoral tropical desert climate environment in Middle East, setting neuter salt spray corrosion test conditions comprising sodium chloride solution concentration, pH value, box temperature, and neuter salt spray mode; and 3) selecting the exterior material of the automobile, sequentially conducting the xenon light aging test and the neuter salt spray corrosion test to the cycle times specified by the relevant test standards, and stoppingthe tests is. According to the weather resistance accelerated aging test method, the environment conditions of the littoral tropical desert climate environment in Middle East can be well simulated. The method has important significance in the quick evaluation of the environmental durability of the automobile product exported to Middle East, and in the guarantee of the long-term environmental service durability in Middle East of the automobile product exported from China.

Description

technical field [0001] The invention relates to a laboratory accelerated test method for simulating a natural climate environment, in particular to an accelerated aging test method for automobile weather resistance simulating a coastal tropical desert climate environment in the Middle East. Background technique [0002] Saudi Arabia has a special geographical location, and its climate environment is quite different from that of my country. Generally speaking, the western plateau in Saudi Arabia has a Mediterranean climate, while other areas have a tropical desert climate. The summer is hot and dry, with strong solar radiation, and the highest temperature can reach above 50°C; the winter climate is mild, with the minimum temperature above 15°C, and the annual average rainfall does not exceed 200 mm. On the other hand, due to the proximity of the Red Sea, the Arabian Sea, the Persian Gulf and other sea areas, the air humidity is relatively high, and the concentration of air s...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 曾文波张晓东揭敢新王俊符永高陶友季
Owner CHINA NAT ELECTRIC APP RES INST