Effect of OC CNF and BIBP chain additives on mechanical and fracture behavior

Abstract

With the rapid development of the new energy vehicle industry, the application of lightweight materials in this field is becoming increasingly widespread. It not only helps to improve the energy efficiency of new energy vehicles, but also enhances their safety and comfort. However, finding lightweight materials that combine high strength, good stability, and environmental friendliness has always been a challenge for the industry. To further improve the mechanical properties of lightweight materials for new energy vehicles and achieve environmentally friendly applications, Bis (tert butyldioisopropyl) benzene was used as a chain extender based on Poly butyleneadipate-co-terephthalate. And a new lightweight foam material for automobiles was developed by blending with modified carbon nanofibers. These experiments confirmed that the proposed new foam material had a tensile strength of 21.0 MPa and a crack elongation of 610%. When the carbon nanofiber content reached 40% and 50%, the modulus significantly increased to over 200 MPa. The modified material's starting tensile strength was 31.8 ± 4.4 MPa. This material not only has high tensile strength, but also exhibits better stability and ductility under stress, and has good environmental significance.

Keywords

• foam material
• mechanical optimization
• new energy vehicles
• lightweight
• pbat