Study on the performance and mechanism of modified mica for improving polypropylene composites

Abstract

Polypropylene (PP) has the most extensive plastics of plastics because of the advantages of simplicity, easy processing, high mechanical properties, high corrosion resistance and abrasion resistance and electrical insulation. The application of PP has limitations in many fields because it is lack of formation shrinkage, low modulus, poor thermal stability, strong gap and low temperature and cracking. The addition of mineral fillers can not only improve their performance, not just the PP/mineral filler composite materials required, but also reduce the cost of the material. Therefore, in this paper, lamellar mica was selected as mineral filler to modify the surface of PP. The effects of titanate coupling agent and silane coupling agent modified mica, and their addition on the properties of PP were systematically studied. KH-570 modification increases the tensile strength, bending strength and modulus of the composites, while JN-114 and KH-570 can effectively improve the toughness and processability of PP composites. The interaction between modifier and mica was analyzed comprehensively by infrared spectroscopy (FTIR), and the effect mechanism of mica on the properties of PP was discussed by scanning electron microscope. The results show that different modified mica as mineral filler and PP can produce synergistic effect.

Engineering Polypropylene–Calcium Sulfate (Anhydrite II) Composites: The Key Role of Zinc Ionomers via Reactive Extrusion

“…PP has been melt blended with clays [ 19 , 20 , 21 ], CaCO 3 [ 8 , 22 , 23 , 24 , 25 ], talc [ 26 , 27 , 28 , 29 ], mica [ 30 , 31 ], kaolin [ 28 , 32 , 33 , 34 ], and other mineral fillers [ 35 , 36 ] typically used in the polymer composites industry. Talc and CaCO 3 are among the most preferred fillers used to produce PP compounds.…”

High‐quality modification of general polypropylene by the synergistic effect of zinc adipate, hydrotalcite, and polypropylene (SP179)

“…PP raw material is a nontoxic and odorless white powder 1–3 . PP is widely used in automobiles, medicine, packaging, tableware, construction materials, films, and other fields because of its excellent heat resistance (110–150°C, the heat deflection temperature), 4 chemical corrosion resistance, 5 creep resistance (21.8 kcal/mol, creep rupture), 6 electrical insulation (10 14 Ω m at 90°C, resistivity), 7 stress cracking resistance, 8 low density (0.9 g cm −3 ), 9 high toughness, 10 and high impact strength 1 and so forth, with continuously expanding applications. At the same time, PP also has become one of the most popular and promising class among the five general synthetic resins: polyethylene, polyvinyl chloride, polystyrene, PP, and ABS resin 11–14 .…”

Eco‐friendly polypropylene power cable insulation: Present status and perspective

“…At present, the development of eco-friendly cable insulating materials is mainly based on the modification of usual thermoplastic polymer, such as low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP) [12][13][14][15][16][17][18][19]. Table 1 compares some key properties of these thermoplastic materials and XLPE at room temperature [3,[20][21][22][23][24][25].…”