This invention belongs to the field of
polypropylene material production, specifically a device for testing the scratch resistance of
polypropylene materials. It includes a testing platform and a
scratching blade. The testing platform is equipped with an orientation adjustment component for controlling the displacement of the
scratching blade, and includes an auxiliary component for observing the scratched area. The auxiliary component for observing the scratched area includes a
sponge roller, a rigid tube, and a
pigment tank. The rigid tube is located above the
sponge roller, and multiple nozzles aligned with the surface of the
sponge roller are located at the bottom of the rigid tube. The
pigment tank is fixedly connected to one side of the upper surface of the testing platform, and a
pigment pump is fixedly connected to one side of the outer wall of the pigment tank. The inlet end of the pigment pump communicates with the inner cavity of the pigment tank. This invention allows pigment to be applied to the surface of a material after the
scratching blade has scratched it. Because the scratches are concave, the pigment only adheres to the area outside the scratches, thus creating a clear contrast between the scratches and the rest of the material surface, making it easy for personnel to distinguish the width and depth variations of the scratches.