车用聚丙烯复合材料的焦糊气味与VOC研究

为明确聚丙烯复合材料的味型、气味等级与挥发性有机化合物(VOC)组分的关联,两种具有焦糊气味的聚丙烯材料(皆包含样板及粒料)分别被用于气味评估、气相色谱-嗅闻-质谱(GC-O-MS)和醛酮分析.结果 显示,样板与所用粒料释放的VOC组成基本一致,但样板对应的烷烃类组分浓度低于粒料,醛酮类组分浓度则高于粒料;所有样品的焦...

Study on the Burnt Plastic-like Odor and VOC of Polypropylene Composites for Automotive Interior Trim

In order to understand the relation of volatile organic compound(VOC)to odor type and grade, two polypropylene composites(each includes plate samples & original pellets)with burnt plastic-like odor were applied to conduct odor evaluation, gas chromatography-olfactometry-mass spectrometry(GC-O-MS)and aldehyde-ketone analysis.The results show that the constituent of VOC emitted from the plate sample and the original pellets are nearly the same, but the concentration of alkanes for the plate sample is higher than that for the original pellets, while the concentration of aldehyde-ketones for the plate sample is lower than that for the original pellets.The burnt plastic-like odor of all samples are originated from alkanes with a certain number of carbon atoms, however the odor grade is affected by alkanes and aldehyde-ketones combined.For polypropylene composites with other odors, it is reasonable to speculate that the VOC which determines the odor type cannot solely determine the odor grade.