TPU long glass fiber Granules pellets Thermoplastic urethanes TPU

TPU+GF ong glass fiber are injection molding and extrusion. The injection conditions are mainly related to the variety of raw materials, the shape of the product and the type of injection molding machine. In the process of injection molding, TPU is the first. The material is melted at a certain temperature, and then injected into the mold under a certain pressure, and rapidly cooled and shaped, which mainly bears the shearing force; because the TPU melt viscosity is high, the melting range is narrow, and the fluidity is Poor, this requires that the viscosity and morphology of the synthesized TPU must be constant, which makes TPU extrusion molding process performance requirements and injection molding TPU can be said to be completely different, they are less shearing This can form a completely uniform melt, making the surface of the product uniform and free of defects.

At present, since the beginning of the 21st century, with the advancement of the polyurethane industry and the expansion of the application of polyurethane, the research on TPU modification and modification methods will become more and more important and valued;