Performance of long glass fiber-reinforced polypropylene composites at different injection temperature

2016 ◽  
Vol 24 (3) ◽  
pp. 233-238 ◽  
Author(s):  
Daohai Zhang ◽  
Min He ◽  
Heng Luo ◽  
Shuhao Qin ◽  
Jie Yu ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Fiber Reinforced ◽  
Polypropylene Composites ◽  
Glass Fiber Reinforced ◽  
Long Glass Fiber ◽  
Injection Temperature

Influence of thermo-oxidative aging on flame retardancy, thermal stability, and mechanical properties of long glass fiber–reinforced polypropylene composites filled with organic montmorillonite and intumescent flame retardant

2019 ◽  
Vol 37 (2) ◽  
pp. 176-189 ◽  
Author(s):  
Ying Zhou ◽  
Weidi He ◽  
Yifan Wu ◽  
Dinghong Xu ◽  
Xiaolang Chen ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Flame Retardant ◽  
Intumescent Flame Retardant ◽  
Fiber Reinforced ◽  
Limiting Oxygen Index ◽  
Polypropylene Composites ◽  
Organic Montmorillonite ◽  
Glass Fiber Reinforced ◽  
Cone Calorimeter Test ◽  
Long Glass Fiber

In this work, the effect of thermo-oxidative aging on organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites was investigated for different exposure times at 140°C. Limiting oxygen index, Underwriters Laboratories-94 tests, cone calorimeter test, and thermogravimetric analysis were used to evaluate the flammability and thermal stability. The results of limiting oxygen index values, Underwriters Laboratories 94 test, and cone calorimeter test show that aging performs negative effect on the flame retardancy of organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites. Thermal oxidation aging markedly changes the decomposition process of organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites. The scanning electronic microscopy images of the external surface of composites indicate that many ground particles and micro-scale cracks are scattered in the surfaces of the composites after aging. The sharp micro-scale cracks and crazing formed on the surface promote the heat and oxygen to penetrate into the bulk of polypropylene matrix. According to the mechanical test results, the thermal oxidation aging reduces the tensile, flexural, and notched impact strengths of organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites.

Crystallization and Mechanical Properties of Glass Fiber Reinforced Polypropylene Composites Molded by Rapid Heat Cycle Molding

2020 ◽  
Vol 21 (12) ◽  
pp. 2915-2926
Author(s):  
Aimin Zhang ◽  
Guoqun Zhao ◽  
Jialong Chai ◽  
Junji Hou ◽  
Chunxia Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Fiber Reinforced ◽  
Heat Cycle ◽  
Polypropylene Composites ◽  
Glass Fiber Reinforced
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