Abstract
Die drawing is an effective method for improving the properties of polymer. In this work, polypropylene (PP)/inorganic particle composites were fabricated by a solid-state die drawing process to investigate the effects of drawing parameters, such as inorganic particles types, drawing temperature, and drawing speed, on the thermal properties, microstructure, and mechanical behavior of the drawn composites. The mechanical properties of the material were significantly improved through this processing method. For the drawn PP/inorganic particle composites with 45 wt% CaCO3, when the drawing speed was 2.0 m/min and the drawing temperature was 110 °C, the density of the drawn composites reached the lowest at 1.00 g/cm3. At this time, the tensile strength, flexural strength, and impact strength of the drawn composites were 128.32 MPa, 77.12 MPa, and 170.42 KJ/m2, respectively. This work provides a new strategy for the preparation of lightweight and high-strength PP-based composites, which have broad application prospects in the field of engineering and structural materials.
Highlights
PP is a semi-crystalline thermoplastic, which is one of the most widely used plastics in the world [1,2,3]
In order to achieve the high performance of PP, researchers have carried out a large number of works on the inorganic particles filling modification of PP [8,9,10]
The “spherulite” structure is surrounded by the amorphous phase and connected by the intergranular connecting tie molecules (TMs) [19,20]
Summary
PP is a semi-crystalline thermoplastic, which is one of the most widely used plastics in the world [1,2,3]. Talc powder (Talc) [11], calcium carbonate (CaCO3) [12,13], and glass beads [14] are generally used for filling modification, and some aspects of the performance of the PP composite modified by filling have been improved [15]. They are still insufficient as structural materials. The strength and modulus of PP are determined by the structure of TMs and the strength and modulus of the amorphous phase [21] This leads to the fact that the potential mechanical strength of the material itself cannot be fully displayed
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
