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Tytuł pozycji:

Composites of sisal fiber/polypropylene based on novel vane extruder: Effect of interface and damage on mechanical properties.

Tytuł :
Composites of sisal fiber/polypropylene based on novel vane extruder: Effect of interface and damage on mechanical properties.
Autorzy :
Wu, Chengran
Jia, Shikui
Chen, Rongyuan
Huang, Zan
Zhai, Shufeng
Feng, Yanhong
Yang, Zhitao
Qu, Jinping
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Temat :
SISAL (Fiber)
COMPOSITE materials
POLYPROPYLENE
INTERFACES (Physical sciences)
FRACTURE mechanics
MECHANICAL behavior of materials
MICROFABRICATION
Źródło :
Journal of Reinforced Plastics & Composites; Dec2013, Vol. 32 Issue 24, p1907-1915, 9p
Czasopismo naukowe
Sisal fibers were pretreated by alkali and maleic anhydride, and then mixed with polypropylene to fabricate sisal fiber-reinforced composites by a self-made vane extruder based on elongational flow field. Maleic anhydride-grafted polypropylene was used as compatilizer to increase the fiber/matrix interactions. The influence of treatment on the fibers structure, the damage to fibers in processing, interfaces of composites and the mechanical properties of composites were investigated. It was observed that the surface of treated fibers was improved obviously compared with that of untreated fibers, which was believed to increase the adhesion between the fibers and matrix. However, the treated fibers were more likely to be damaged during processing. In comparison to unmodified system, the incorporation of treated fibers could significantly enhance the mechanical properties of composites, especially adding the compatilizer of maleic anhydride-grafted polypropylene. The flexural and impact strengths were maximum for the sisal fiber/polypropylene and maleic anhydride-grafted polypropylene composites, and its tensile strength was also improved significantly. The major contribution of this change should be that the morphology of fibers could be well preserved in elongational flow field, which based on the vane extruder showed a good application in fiber-reinforced composites. [ABSTRACT FROM AUTHOR]
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