The main content of this article was transferred from "China Plastics", written by the School of Materials Science and Engineering of South China University of Technology. Huachuang experts have simplified the content of the literature. It mainly discusses the preparation and properties of talc-filled PP composites. Huachuang reading literature: The effect of KH-560 on the surface treatment of talc powder is often not ideal. After filling talcum powder, the mechanical properties of the material are greatly reduced. This article provides a very noteworthy solution: filling with mixed talc powder of different particle sizes, with appropriate surface treatment and granulation process control, can obtain filled PP with mechanical properties close to pure PP. Summary of the main content of the literature and discussion of the results: Main raw materials: 1. PP, EP 300M, China National Shell Petrochemical Co., Ltd. 2. Talc powder, particle size 6, 12, 30, 50um, commercially available 3. Antioxidant, B215, Ciba Refined 4. KH-560, Commercial Preparation Process Introduction: Surface treatment of talc powder with KH-560 The surface treated filler and PP matrix are stirred at a certain ratio in high-speed stirring. Twin-screw extruder is used. Extrusion granulation, the screw rotation speed was 200r/min, and the obtained pellets were dried at 80 °C. 1. When the talc powder particle size was 12um, the tensile strength and bending strength of the filled PP material reached the maximum. 2. The use of talc powder without particle size for compounding PP can achieve better overall performance. When PP is mixed with 12 um and 30 um talc, the elongation at break and toughness of the material are significantly improved.
Projection Light Imaging Lens Module,Uv Light Curing Module,3D Printer Curing Module,Led Optical Lens Panel
Dongguan Lianlong Photoelectric Technology Co., Ltd , https://www.lianlonggd.com