Improved impact property of long glass fiber‐reinforced polypropylene random copolymer composites toughened with beta‐nucleating agent via tunning the crystallization and phase

2021 ◽  
Author(s):  
Xujing Yang ◽  
Jiangyan Chang ◽  
Wenjun Fang ◽  
Zhiwei Yu ◽  
Maojun Li ◽  
...  





2011 ◽  
Vol 66-68 ◽  
pp. 683-687 ◽  
Author(s):  
Li Zhang ◽  
Yan Jue Gong ◽  
Shuo Zhang

By designing the different formulations of the composites and adopting optimized technology including extrusion and molding, the effects of the Micro-capsules on the properties of nylon composites are analyzed by the impact property test. The mechanical impact property of the glass fiber reinforced nylon composites is influenced little if the content of the self-healing microcapsules added is less than 3.5%, and the technology of self-healing microcapsules used in the polymer composite gear is feasible.



Author(s):  
Fabrizio Quadrini ◽  
Claudia Prosperi ◽  
Loredana Santo

A rubber-toughened thermoplastic composite was produced by alternating long glass fiber reinforced polypropylene prepregs and rubber particles. Several composite laminates were obtained by changing the number of plies, the rubber powder size distribution, and the stacking sequence. Quasi-static mechanical tests (tensile and flexure) and time dependent tests (dynamic mechanical analysis and cyclic flexure) were carried out to evaluate strength and damping properties. As expected, 10 wt% rubber-filled laminates showed lower strengths than rubber-free laminates but the effect of the rubber on the composite damping properties was evident. At low rates, the rubber particles can also double the dissipated energy under cyclic loading, even if this effect disappears by increasing the test rate.





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