PLA协同纳米CaCO3、BF增韧PP复合材料性能研究OA

Polypropylene(PP)-based PP/PLA/BF/CaCO3 composites were prepared by melt-blending extrusion with modified bagasse fiber(BF),nano-CaCO3,and polylactic acid(PLA).The relationship between the internal structure and properties of the composites after the addition of PLA,BF,and nano-CaCO3 was investigated.The results showed that the addition of PLA improved the compatibility of the composites,the addition of BF increased the crystallinity of the material,and the addition of nano-CaCO3 enhanced the thermal stability of the material.When the mass fraction of BF was 10%,the mass fraction of PLA was 20%,and the mass fraction of nano-CaCO3 was 5%,the mechanical properties of the PP/PLA/BF/CaCO3 composites were optimal,with a tensile strength of 25.59 MPa and an impact strength of 9.822 9 kJ/m2.The mechanical properties of the composites prepared with the addition of PLA,BF,and nano-CaCO3 were improved to varying degrees.The novel composite material proposed in this study combines low-carbon attributes with cost advantages,and can be applied in industrial sectors with urgent sustainability demands such as automotive manufacturing and green packaging.