Wear characterization of basalt fiber reinforced polypropylene/polylactic acid hybrid polymer composite

Abstract

In this work, the wear loss of basalt fiber reinforced polypropylene/polylactic acid polymer composite was analyzed using pin-on-disc under dry sliding conditions. The polypropylene, polylactic acid, and basalt fiber (chopped fiber) are melted and mixed homogeneously using a twin-screw extruder, which is followed by an injection molding technique for specimen preparation. The specimens are named as PPB1 (polypropylene, 50%; polylactic acid, 35%; basalt fiber, 15%), PPB2 (polypropylene, 55%; polylactic acid, 30%; basalt fiber, 15%), and PPB3 (polypropylene, 60%; polylactic acid, 25%; basalt fiber, 15%) based on their weight fraction. The wear rate and coefficient of friction are measured for each sample subjected to three different loads and sliding velocities. It is observed from the wear mapping that the wear loss of sample PPB3 is relatively less when compared with the other samples. The scanning electron microscope images of the worn-out region of the sample reveal the fracture and dislocation of fibers in the matrix. The sample PPB3 shows low wear loss. It is due to the better cohesion between the fiber and the matrixes when compared with the other samples.

Tribo-mechanical analysis of magnesium-based fibre metal laminates for structural applications

“…This eventually increase the COF at higher loads. 32 At higher speed, the resistance to wear was better under 20, 30 and 50 N loads. In Figure 10 it is inferred that a mild wear of around 1 to 1.1 is observed in a very limited area at high loading condition and at maximum speed of 300 rpm.…”

“…Initially the epoxy matrix gets weared, and afterwards the first layer of fibres get in contact with the disc during the sliding process. Due to this ploughing marks appear on the contact surface of the specimen 32 as shown in AW1 (After Wear) of Figure 11. Ironing mechanism is also present in the sliding surface may be due to the hardening of the material as the sliding proceeds.…”

Surface Roughening of Irradiation-Activated Basalt Fiber through In Situ Growth of SiO2: Effects on Crystallization and Properties of PP Composites

“…Therefore, it is believed that the modification of BF to produce rough surface or increase the chemical reactivity without reducing the physical integrity of BF is the key point in making the most of BF. Surface roughing is believed to enhance the physical interlock between the surface of fiber and the polymer chain and increase the thickness of the interface, thus the strong fiber can better bear the force and prevent chain slippage and plastic deformation [ 29 , 30 , 31 , 32 ].…”