Injection Molding of Products Made of Particulate-Filled Polymer Composite Materials with Various Structures

It is shown that the injection molding of thin-walled products with a thickness of less than 1 mm can be difficult in the case of particulate-filled polymer composite materials (PFPCMs) with MFS-1, MFS-2, and HFS types of structure. Products with a wall thickness of more than 3 mm and L/h ≤ 100 can be obtained by injection molding using almost all PFPCM structure types (DS, LFS, MFS-1, MFS-2, and HFS) at the processing temperatures. However, when the L/h ratio increases, the products may be difficult to process using injection molding. For the first time, dependences are established for pressure losses at injection molding on generalized parameters and PFPCM dispersion structure type and product size. Such an approach makes it possible to predict and choose the required process parameters and injection molding machines for processing the majority of PFPCMs with different types of dispersed structures based on polymer matrixes and solid dispersion fillers.