Blue Dyed Polypropylene Material and Its Influence to Prolong LifeReport as inadecuate




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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 PP Flat 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 ultraviolet light. 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 wavelength blue light, blue-violet and UV light. High-energy light is easily broken molecular chain. It is bringing in photodegradation, and its direct results are the poor outdoor durability of PP woven basketwork. The dyed spectrum is supported it. The conclusion is polypropylene material properties determine its poor outdoor weatherability. The PP Flat Yarn is minimal impact on the outdoor durability that woven packing cloth or bag colored red dye. Colored blue is outdoor durability far better than non-color PP material. It must pay attention to the weatherability problems on the woven bags for flood disaster, to prevent dyke break flood caused by prolonged outdoor exposure. Maybe, blue color dye has anti UV agent function.

KEYWORDS

photo oxidation; light degradation; Polypropylene-PP ribbon-like filament; colored woven; weatherability; outdoor life; anti UV

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Author: Jianren Hu

Source: http://www.scirp.org/



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