Composite sheet for indoor decoration from recycled thermoplastic waste reinforced by textile wastes of loincloth

Abstract

Composite sheets for indoor decoration from recycled thermoplastic waste reinforced by textile wastes of loincloth are made using 4 kinds of packaging plastic, including HDPE, LDPE, PP, and PLA, which are compressed by compression molding, which loincloth is reinforced. In the experiment, loincloth layers were used with 3, 5, 7, and 9 layers. Thermoplastic layers and loincloth layers were stacked together, and they are compressed with a ratio of thermoplastic layers and loincloth layers at 50-50, 40-60, and 30-70 wt%. The compression conditions were set up at a pressure of 10.34 Bar, a forming temperature of 200°C, and a forming time of 10 minutes. A composite sheet size was 200 x 200 mm. After that, a composite sheet was prepared to investigate with a tensile test and microstructure. The results showed that tensile strength increased with the increase of the loincloth layer. Meanwhile, tensile strength decreased with the increase of thermoplastic layers. The highest mechanical properties were using the loincloth of 9 layers and a ratio of thermoplastic layers and loincloth layers at 50-50. All 4 kinds of thermoplastics, PP was highest mechanical properties with a tensile strength of 62.96 MPa and a tensile modulus of 1367.4 MPa. In addition, the microstructures were confirmed to be the reason for the decrease and increase of mechanical properties.