Research on the Effect of Temperature on VOCS Emission for Automotive Interior Parts

Xiao Yao1, Zheng Hong1, Bai Yuping1, Sun Dongrui1, Chen Shuli1, Zhu Zhenyu2

（1. Materials & Lightweight R&D Institute, China FAW Co., Ltd., Changchun 130013; 2. Automotive Data of China Co., Ltd., Tianjin 300300）

Abstract：to explore the effect of temperature on VOCS emission of automotive interior parts, this paper, using the door interior trim panel as an example, studies the emission laws of different VOCS (Volatile Organic Compounds) at 25 ℃ and 65 ℃ by bag method. The study indicates that, under 25 ℃ and 65 ℃, the concentration of VOCS in the door interior trim panel varies with time as follows: except for acetaldehyde, all other VOCS show a rapid increase in the emission concentration within the first 10 h, whereas the increase rate of the emission concentration of VOCS slows down or even stabilizes in the time period from 10 h to 24 h; at temperature of 25 ℃ and 65 ℃, the concentration of different VOCS in the door trim panel is ranked as formaldehyde > acetaldehyde > xylene > ethylbenzene > toluene when it is emitted for 24 hours. For the same VOCS components, the concentration at 65 ℃ is significantly higher than that at 25 ℃. Key words: VOCS, Interior part, Temperature