Blue Dyed Polypropylene Material and Its Influence to Prolong Life

摘要

In this paper, it analyzes the causes that polypropylene/PP woven basketwork damage in the outdoor.It plays a significant role against ultraviolet degradation in short wavelength that blue dyed material PPFlat Yarn, according to experimental data. Weather resistance of polypropylene is relative to the dye color.Blue dye may be reflective of short wavelength the blue and blue-violet light, and part of the absorption of ultravioletlight. The short wavelength penetration into the polypropylene body's energy is reduction. In addition,it is not enough to interrupt PP molecular chains by the long-wavelength energy. In contrast, red dyes,which reflect long-wavelength red light, while it penetrates into the colored plastic body by the short wavelengthblue light, blue-violet and UV light. High-energy light is easily broken molecular chain. It is bringingin photodegradation, and its direct results are the poor outdoor durability of PP woven basketwork. The dyedspectrum is supported it. The conclusion is polypropylene material properties determine its poor outdoorweatherability. The PP Flat Yarn is minimal impact on the outdoor durability that woven packing cloth or bagcolored red dye. Colored blue is outdoor durability far better than non-color PP material. It must pay attentionto the weatherability problems on the woven bags for flood disaster, to prevent dyke break flood caused byprolonged outdoor exposure. Maybe, blue color dye has anti UV agent function.