Hot Plate Welding of Polypropylene and Talc Reinforced Polypropylene Composites

摘要

A systematic study of polypropylene and talc reinforced polypropylene using hot plate welding was conducted. The control parameters, welding displacement, melt layer thickness, and ratio of weld displacement to melt layer thickness were studied. A constant pressuring method was evaluated. Approximate equations were obtained experimentally to calculate the melt layer thickness based on the hot plate temperature and heating time. It is found that the maximum joint strength depends on the talc concentration. The maximum joint strength for 0% and 40% talc reinforced polypropylene was 97% and 54% of the bulk strength, respectively.