It has been found through experiments that TAF has little effect on the tensile strength, elongation at break, notched impact strength of simply supported beams and unnotched impact strength of simply supported beams. TAF is used as an internal and external lubricant. The proper amount can improve the mechanical properties of the reinforced nylon particles, and the excess will reduce the mechanical properties of the material.
Not only that, TAF has other effects, which will also have an impact on the appearance of reinforced nylon pellets. In the cavity, due to the uneven thickness, the resistance to the flow of the melt is different. The flow space at the rear interface is large, the resistance is small, and the flow rate is fast; the flow space at the thin section is small, the resistance is large, and the flow rate is slow. Due to the force of the melt during the molding, the glass fiber migrates to the surface to cause the glass fiber to be exposed. Due to this difference in velocity, melts from different wall thicknesses are brought together at different rates, eventually forming a significant weld line at the junction. After the addition of TAF, the injection pressure is greatly reduced, and the processing fluidity of the melt is significantly improved. The friction between the melt and the mold is reduced, and the flow rate of the melt in the mold cavity is increased, so that the glass fiber exposure phenomenon is reduced.
Summary: Although the lubricant is an auxiliary agent, it mainly plays a role in lubrication. However, it has been found through further experiments that the addition of a proper amount of lubricant can improve the mechanical properties, increase the fluidity, and improve the reinforced nylon 66 granules. Exposed phenomenon, thereby improving the appearance of the product.
