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Ultrahigh Flowability and Excellent Mechanical Performance of Glass Fiber/PA6 Composites Prepared by Hyperbranched Polymers
- Source :
- Macromolecular Materials and Engineering, Vol 308, Iss 8, Pp n/a-n/a (2023)
- Publication Year :
- 2023
- Publisher :
- Wiley-VCH, 2023.
-
Abstract
- Abstract Lightweighting of automotives is crucial for the decrease of fuel and energy consumption, as well as CO2 emission and environmental pollution. Polymer composites, especially the high strength glass fiber/polyamide (GF/PA) composites, have great potential in lightweight; however, they have not been universally accepted due to their insufficient performance. Here, a stearate‐ended hyperbranched polyester (HBP‐12‐n) is designed and high‐performance GF/PA6 composites with high GF content are prepared. The flowability of the composites can be further increased by combining carboxyl‐ended hyperbranched polymer (HyPer C181) with HBP‐12‐n. Compared with unmodified GF/PA6 composites, the melt flow index (MFI) can be increased remarkably to 587% by adding a 0.7 wt% mixture of HBP‐12‐75 and HyPer C181, and the strength and toughness remain competitive. The simultaneous improvement in MFI and impact strength of GF/PA6 composites is the first discovery of this kind, and a synergistic mechanism of amphiphilic bridging‐deformation slipping‐interfacial strengthening of hyperbranched polymers is proposed to account for this phenomenon. This work provides a simple strategy to fabricate GF/PA6 composites with the extensive application for automotive parts and has great prospects in making automotives lightweight and reduction of CO2 emissions.
Details
- Language :
- English
- ISSN :
- 14392054, 14387492, and 20230001
- Volume :
- 308
- Issue :
- 8
- Database :
- Directory of Open Access Journals
- Journal :
- Macromolecular Materials and Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.6d724ca5bb8f4a4cb62d72a87b7b9404
- Document Type :
- article
- Full Text :
- https://doi.org/10.1002/mame.202300012