The material optimization of low-friction PVC baseball can be carried out from four directions: material formula, surface treatment, structural design and processing technology. The following is a specific analysis:
Material formula optimization
Low friction coefficient additives, such as polytetrafluoroethylene (PTFE) micro-powder or silicone oil-based lubricants, are added to the PVC substrate. These additives can form a lubricating film on the material surface, reducing the coefficient of friction with air or other objects.
Select highly fluid PVC resin to enhance the filling property and surface finish of the material during the molding process and reduce friction caused by surface roughness.
Surface treatment technology
Coating the surface of the baseball, such as using fluorocarbon paint or siloxane coating. These coatings have extremely low surface energy, which can effectively reduce friction and enhance wear resistance and weather resistance.
Micro-nano structure processing is carried out on the surface through physical or chemical methods, such as laser etching or chemical etching, to form texture structures with drag reduction effects, further reducing friction.
Structural design improvement
It adopts a multi-layer composite structure design. The outer layer is a PVC layer with a low friction coefficient, and the inner layer is a layer of high-strength or lightweight materials. This design not only ensures the low friction performance of the baseball, but also meets its mechanical performance requirements.
Optimize the shape and size of the baseball to reduce air resistance or contact surface friction during flight or rolling.
Processing technology control
During the injection molding process, parameters such as temperature, pressure and injection speed are precisely controlled to ensure a high surface finish of the baseball and reduce friction caused by processing defects.
Post-treatment is carried out on the formed baseball, such as polishing or grinding, to further improve the surface quality and reduce the coefficient of friction.