Preparation of Self-Reinforced Polypropylene Composites via Infrared Radiation Preheating

IF 2.8 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science Pub Date : 2026-03-14 Epub Date: 2026-02-06 DOI:10.1002/app.70503

Qi Kuang, Yi Guo, Bobing He

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Abstract

Previous studies implemented a hot-pressing protocol to optimize the processing parameters and composition for producing high-performance self-reinforced polypropylene (SRPP) composites, yet the methodology still necessitates further refinement. This study systematically investigates the influence of infrared radiation pretreating combined with film-stacking hot pressing on the properties of SRPP composites. This approach significantly improved the properties of SRPP without nucleating agents. Compared with the original process, the tensile strength increased from 95 MPa to 128 MPa (a 35% improvement), while the flexural strength and flexural modulus increased from 23 MPa to 35 MPa (54%) and from 1.05 GPa to 2.25 GPa (114%), respectively. However, in systems with β-nucleating agents, infrared treatment compromised the interfacial defect repair effect, thereby restricting the performance optimization of SRPP under high-pressure conditions. Nevertheless, infrared radiation preheating constitutes an effective processing strategy for self-reinforced composites, providing a practical approach for producing high-performance composites in industrial applications.

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红外辐射预热法制备自增强聚丙烯复合材料

先前的研究采用热压工艺来优化生产高性能自增强聚丙烯（SRPP）复合材料的工艺参数和成分，但该方法仍需要进一步改进。本文系统地研究了红外辐射预处理与叠膜热压相结合对SRPP复合材料性能的影响。该方法显著改善了不含成核剂的SRPP的性能。与原工艺相比，抗拉强度从95 MPa提高到128 MPa（提高35%），抗弯强度和抗弯模量分别从23 MPa提高到35 MPa（54%）和从1.05 GPa提高到2.25 GPa（114%）。然而，在含有β-成核剂的体系中，红外处理影响了界面缺陷修复效果，从而限制了SRPP在高压条件下的性能优化。然而，红外辐射预热是一种有效的自增强复合材料的加工策略，为工业应用中生产高性能复合材料提供了一种实用的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Polymer Science 化学-高分子科学

CiteScore

5.70

自引率

10.00%

发文量

1280

审稿时长

2.7 months

期刊介绍： The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.