

FOLLOWUS
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
zhangjie@scu.edu.cn
Received:03 January 2024,
Revised:2024-2-28,
Accepted:06 March 2024,
Online First:08 April 2024,
Published:01 June 2024
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Li, Y. J.; Hu, M. L.; Zhang, J. W.; Fu, Q.; Zhang, J. The effect of blending ratio on the structure and properties of the PPR/PS in situ fiber reinforced system prepared by multi-flow vibration injection molding. Chinese J. Polym. Sci. 2024, 42, 851–863
Yan-Jiang Li, Meng-Long Hu, Jun-Wen Zhang, et al. The Effect of Blending Ratio on the Structure and Properties of the PPR/PS
Li, Y. J.; Hu, M. L.; Zhang, J. W.; Fu, Q.; Zhang, J. The effect of blending ratio on the structure and properties of the PPR/PS in situ fiber reinforced system prepared by multi-flow vibration injection molding. Chinese J. Polym. Sci. 2024, 42, 851–863 DOI: 10.1007/s10118-024-3119-3.
Yan-Jiang Li, Meng-Long Hu, Jun-Wen Zhang, et al. The Effect of Blending Ratio on the Structure and Properties of the PPR/PS
To enhance the mechanical properties of PPR
PS was added to the PPR matrix. Then PPR/PS MFC with different blending ratios were prepared using MFVIM technology. The results indicated that V-20PS sample had a large number of shish-kebab and hybrid shish-kebab structures and the mechanical properties were significantly improved.
To enhance the mechanical properties of polypropylene random copolymer (PPR)
polystyrene (PS) with four different contents were added to the PPR matrix through melt blending. Subsequently
using the Multi-Flow Vibration Injection Molding (MFVIM) technology
PPR/PS
in situ
microfiber composites (MFC) with different blending ratios were prepared. The results indicated that blending ratio had a great impact on the phase morphology and crystal structure of MFVIM samples
which was different from those of conventional injection molding (CIM) samples. PS ultrafine fibers could be formed under the shear field and could absorb the PPR molecular chains to form hybrid shish-kebab structures. Meanwhile
the PPR matrix co
uld also form shish-kebab structures under the effect of strong shear. When the PS content reached 20%
under the combined action of PS
in situ
microfibers and highly oriented crystal structure
the tensile strength and Young's modulus of the sample were obviously improved and the impact strength remained at a relatively high level. So a strong and tough balanced PPR based material was obtained. These results provide valuable insights for expanding the industrial and daily-life applications of PPR and show promising development prospects.
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