Three-dimensional fiber orientation in vibration welded joints of glass fiber reinforced polyamide-6

2008 ◽  
Vol 29 (9) ◽  
pp. 954-963 ◽  
Author(s):  
Musa R. Kamal ◽  
Young-Mi Chung ◽  
Rodolfo Gomez
Keyword(s):  
Glass Fiber ◽  
Welded Joints ◽  
Fiber Orientation ◽  
Three Dimensional ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

scholarly journals Warpage Reduction of Glass Fiber Reinforced Plastic Using Microcellular Foaming Process Applied Injection Molding

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 360 ◽  
Author(s):  
Hyun Kim ◽  
Joo Sohn ◽  
Youngjae Ryu ◽  
Shin Kim ◽  
Sung Cha
Keyword(s):  
Injection Molding ◽  
Glass Fiber ◽  
Fiber Orientation ◽  
Mechanical And Thermal Properties ◽  
Micro Ct ◽  
Fiber Reinforced ◽  
Foaming Process ◽  
Microcellular Foaming ◽  
Glass Fiber Reinforced ◽  
The Impact

This study analyzes the fundamental principles and characteristics of the microcellular foaming process (MCP) to minimize warpage in glass fiber reinforced polymer (GFRP), which is typically worse than that of a solid polymer. In order to confirm the tendency for warpage and the improvement of this phenomenon according to the glass fiber content (GFC), two factors associated with the reduction of the shrinkage difference and the non-directionalized fiber orientation were set as variables. The shrinkage was measured in the flow direction and transverse direction, and it was confirmed that the shrinkage difference between these two directions is the cause of warpage of GFRP specimens. In addition, by applying the MCP to injection molding, it was confirmed that warpage was improved by reducing the shrinkage difference. To further confirm these results, the effects of cell formation on shrinkage and fiber orientation were investigated using scanning electron microscopy, micro-CT observation, and cell morphology analysis. The micro-CT observations revealed that the fiber orientation was non-directional for the MCP. Moreover, it was determined that the mechanical and thermal properties were improved, based on measurements of the impact strength, tensile strength, flexural strength, and deflection temperature for the MCP.

Thermal, morphological and mechanical properties of glass fiber reinforced star‐branched polyamide 6

2022 ◽  
Author(s):  
Chunhua Wang ◽  
Yingwei Zhang ◽  
Yong Yi ◽  
Dengwang Lai ◽  
Jun Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

Aluminum hypophosphite and aluminum phenylphosphinate: A comprehensive comparison of chemical interaction during pyrolysis in flame-retarded glass-fiber-reinforced polyamide 6

2019 ◽  
Vol 37 (3) ◽  
pp. 193-212
Author(s):  
Xi Cheng ◽  
Jianming Wu ◽  
Chenguang Yao ◽  
Guisheng Yang
Keyword(s):  
Heat Release ◽  
Glass Fiber ◽  
Chemical Interaction ◽  
Fire Behavior ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Limiting Oxygen Index ◽  
Glass Fiber Reinforced ◽  
Flame Retarded ◽  
Aluminum Hypophosphite

This study compared thermal degradation, pyrolysis behavior, and the fire behavior of flame-retarded glass-fiber-reinforced polyamide 6 with aluminum hypophosphite and aluminum phenylphosphinate (BPA-Al), respectively. We sythesize aluminum phenylphosphinate by benzenephosphinic acid (BPA) and AlCl3.6H2O in water. so we call aluminum phenylphosphinate BPA-Al for short. The dependence of limiting oxygen index on phosphorus content was linear for aluminum hypophosphite and BPA-Al. Thermogravimetric analysis proved aluminum hypophosphite was less stable than BPA-Al. Thermogravimetric-Fourier transform infrared tests showed that aluminum hypophosphite system balanced the charring process and the gas releasing well, and that BPA-Al system enhanced the charring process and decreased the gas releasing. Peak heat release rate and total heat release data proved that aluminum hypophosphite system was superior to BPA-Al system in lowering the heat release. Their differences were caused by different P-H (aluminum hypophosphite) and P-phenyl (BPA-Al) structures. P-H structure did better than P-phenyl structure in balancing the condensed phase effect and the gaseous phase action. So P-H structure (aluminum hypophosphite) was more suitable than P-phenyl structure (BPA-Al) in the flame retardancy of glass-fiber-reinforced polyamide 6.

Sign in / Sign up

Export Citation Format

Share Document