Automotive Interior Acceleration Weathering Test And Equipment Improvement Of Natural Accelerated Weathering Test Chamber

In order to develop the production which customer-satisfaction, automobile manufacturers in addition to attention to the auto in the power performance, fuel economy, braking, handling stability and basic properties, weathering of automotive interior parts also invested great effort. Natural weathering test is one of the main methods of auto weather resistance testing. In this paper, the natural acceleration of automotive interior natural acceleration weathering test and natural acceleration test box equipment improvement in the title of research, the specific content includes:First, according to the theory of equivalent coefficient, the comparison test is designed to provide the basis for the verification of accelerated weathering performance of natural accelerated weathering test chamber. Specific method is: From May 2014 to April 2015,take the same type of auto test pieces, respectively, the actual use of the user, vehicle weathering test, in the test process to collect user vehicle Temperature Normalized Radiation(TNR)data, vehicle exposure TNR data. And the two TNR data and improved natural accelerated exposure test chamber test was compared to the TNR equivalent, the study of the relationship between the three TNR equivalent, so as to verify the acceleration of the accelerated exposure test chamber. Subsequently, through the test drawing the typical area of TNR monthly and annual distribution, to provide basic data for the future of our country auto interiors accelerated natural exposure test.Second, the performance parameters of the equipment improvement of natural acceleration weathering test chamber are put forward, and the equipment improvement of existing natural accelerated weathering test chamber is proposed. The improvement of up to 14 of the original equipment was proposed, and 5 of them were further discussed. The improved equipment can meet the requirements of accelerated weathering test.Third, by calculating the TNR data on user, vehicle natural weathering test, accelerated test chamber for quick coefficient, draw the following conclusion: the TNR value of vehicle natural weathering test is 3.8 times and 3.9 times of users TNR value, and the TNR value of accelerated test chamber is 4.5 times to 5 times of users TNR value, accelerated test chamber with speed significantly compared with the vehicle natural weathering test more quickly. Compared with the vehicle natural weathering test, the accelerated test chamber is 1.27 to 1.16 times faster. Suggesting that automotive interior parts modified natural accelerated weathring test chamber fully meet the automotive interior non metal material of natural accelerated weathering test requirements, and speed up the test, and the test data is more accurate, reduce the test step, greatly reduces the cost of test, can better simulate the vehicle weathering test and User's actual use, better complete the natural accelerated weathering test.Fourth, Collect the TNR value of users in different regions of China, Through the analysis of the TNR monthly value of the typical regional user vehicle, the main TNR value concentration was found between September and April. As can be seen from the data, the user TNR value from south to north gradually decreased. Therefore infer, automotive interior non metal material of atmospheric weathering phenomenon should focus on the impact of solar radiation and temperature. Results also show that the Turpan region due to the summer high temperature for a long time, the short time of TNR Langley cost is very high, so in the summer to quickly accumulated TNR value.Fifth, the effect of the weathering test chamber in large quantities is briefly described.Finally, on the auto interior natural accelerated weathering test development prospects were discussed, pointed up at the sun auto tracking natural accelerated weahering test box, artificial auxiliary heating natural accelerated weahering test box, automatic simulation of TNR environment curve type natural weathering test box is a step in the direction of research.