scholarly journals Color Changes and Mechanical Properties of Glass Fiber Reinforced Polycarbonate Composites after Thermal Aging

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 222
Author(s):  
Zhenbo Lan ◽  
Jiangang Deng ◽  
You Song ◽  
Zhuolin Xu ◽  
Yu Nie ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Thermal Aging ◽  
Aging Temperature ◽  
Bending Strength ◽  
Polymer Matrix Composites ◽  
Color Difference ◽  
Fiber Reinforced ◽  
Color Changes ◽  
Glass Fiber Reinforced

Thermal aging of polymer matrix composites exert significant influence on their properties and applications. This paper studied the color changes and mechanical properties of glass fiber reinforced polycarbonate (GF-PC) composites after aging at different temperatures, and the correlation between the trend of color changes and mechanical properties after aging was discussed. The GF-PC composites were aged at 85 °C, 100 °C, 115 °C, 130 °C and 145 °C, respectively. Thereafter, CIELAB colors were used to characterize the color changes of the composites after aging. Tensile and three-point bending tests were carried out to determine the mechanical properties of the composites. According to the values of CIELAB color, the color changes and the color difference (ΔE) of the GF-PC composites after aging were calculated, which showed that color of the GF-PC composite aged at 100 °C changed the most. The color changes of the composites after aging mainly comes from the change of brightness (L value), which was 25.067 for the Raw GF-PC composite. When the aging temperature increased from 85 °C to 100 °C, the brightness of the composites also increased, but decreased when the aging temperature is above 100 °C and continues to rise. Coincidentally, the trend of the mechanical properties of GF-PC composites is closely associated with color changes in the aging temperature range of 85 °C to 145 °C. The tensile and flexural strength of the composites reached the maximum value 72 MPa and 131 MPa, respectively, after aged at 100 °C. It can be speculated that the brightness of the GF-PC composites correlates with trends observed in its tensile strength and bending strength.

scholarly journals The Effect of Moisture on the Properties of Glass Fiber Polymer Matrix Composites with MoS2 and CaCO3

2019 ◽  
Vol 8 (6) ◽  
pp. 4800-4806
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Glass Fiber ◽  
Epoxy Matrix ◽  
Polymer Matrix Composites ◽  
Tap Water ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
The Matrix

The mechanical properties and water absorption behavior of a pure glass fiber reinforced epoxy matrix and a glass fiber reinforced epoxy filled composites immersed into a tap water were investigated. The main purpose of this experiment is addition of two different powdered fillers (CaCO3 and MoS2 ) into the epoxy matrix and comparing the properties of pure GFRP and filled GFRP. The composites specimens with fillers absorb less water when compared to pure GFRP specimens at room temperature. Water absorption curves and equilibrium moisture content were determined. The composites exhibit a positive deviation from the Fickan’s law with the addition of fillers into the matrix. The influence of water uptake has significant effect on the reduction of mechanical properties. It is observed that 3% filled MoS2 in epoxy matrix has less uptake of water and the tensile strength decreased is 3% , flexural strength decreased up to 18% and shear strength is 42% decreased when compared to CaCO3 filled composites and unfilled glass fiber reinforced polymer composite.

scholarly journals Effect of Thermal Aging on Mechanical Properties and Color Difference of Glass Fiber/Polyetherimide (GF/PEI) Composites

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 67
Author(s):  
You Song ◽  
Jiangang Deng ◽  
Zhuolin Xu ◽  
Yu Nie ◽  
Zhenbo Lan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Glass Fiber ◽  
Thermal Aging ◽  
Mechanical Characteristics ◽  
Research Study ◽  
Color Difference ◽  
Glass Fiber Reinforced ◽  
Composite Samples

This research study is aimed at evaluating the mechanical characteristics in terms of tensile strength and flexural strength of glass fiber reinforced Polyetherimide (GF/PEI) under different thermal aging. Tensile testing and bending testing were performed on the thermally aged polyetherimide composites. The mechanical properties of the thermally aged samples were also correlated with their color difference. The experimental results showed that both the tensile strength and flexural strength of the GF/PEI composite samples decreased with increasing aging temperature. However, the elastic modulus of the composite samples is nearly independent on the thermal aging. The thermally aged samples exhibited brittle fracture, resulting in low strength and low ductility. The loss in strength after thermal aging could be also linked to the change of their color difference, which can indirectly reflect the change of the strength for the composites after thermal aging.

Mechanical properties of plain woven kenaf/glass fiber reinforced polypropylene hybrid composites

2019 ◽  
Vol 61 (11) ◽  
pp. 1095-1100 ◽  
Author(s):  
Sivakumar Dhar Malingam ◽  
Kathiravan Subramaniam ◽  
Ng Lin Feng ◽  
Siti Hajar Sheikh MD Fadzullah ◽  
Sivaraos Subramonian
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Hybrid Composites ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
Woven Kenaf

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
Sign in / Sign up

Export Citation Format

Share Document