高剪切速率下碳酸钙聚丙烯复合材料的流变性能

IF 1.1 4区工程技术 Q4 POLYMER SCIENCE Polimery Pub Date : 2023-10-18 DOI:10.14314/polimery.2023.7.6

Arkadiusz Kloziński, Krzysztof Lewandowski, Jacek Mirowski, Mateusz Barczewski, Paulina Jakubowska

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引用次数: 0

摘要

研究了未改性和硬脂酸改性碳酸钙(5、10、20、30 wt.%)对等规聚丙烯(iPP)及其复合材料的流变性能。根据质量流率(MFR)的变化确定了复合材料的加工系数K。在注射过程中，使用特殊的在线测量头，在高剪切速率下进行流变特性评估。根据Ostwald-de Waele幂律模型，测量温度为230°C，表观剪切速率范围为19,100至101,900 s-1。研究表明，聚合物复合材料在加工过程中的行为(流动阻力、流动和粘度曲线，MFR)取决于填充程度、填料类型和剪切速率范围。

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Rheological properties of polypropylene composites with calcium carbonate under high shear rates

The rheological properties of isotactic polypropylene (iPP) and its composites with unmodified and stearic acid-modified calcium carbonate (5, 10, 20, 30 wt.%) were investigated. The processability factor K of the composites was determined based on changes in the mass flow rate (MFR). The assessment of rheological properties was carried out at high shear rates, in the injection process, using a special on-line measuring head. Measurements were performed at a temperature of 230°C, in the range of apparent shear rate from 19,100 to 101,900 s-1, based on the Ostwald-de Waele power-law model. It has been shown that the behavior of polymer composites during processing (flow resistance, flow, and viscosity curves, MFR) depends on the degree of filling, the type of filler used and the range of shear rates.

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来源期刊

Polimery Materials Science-Polymers and Plastics

CiteScore

2.90

自引率

6.20%

发文量

审稿时长

1 months

期刊介绍： The "Polimery" journal, of international circulation, is publishing peerreviewed scientific and technical research papers covering polymer science and technology in the field of polymers, rubbers, chemical fibres and paints. The range of topics covered are raw materials, polymer synthesis, processing and applications of polymers. Apart from scientific and technical research papers the monthly includes technical and commercial information such as reports from fairs and exhibitions as well as home, world and technical news. “Polimery "- an international journal covering the following topics: polymers, rubber, chemical fibres and paints. The Journal is addressed to scientists, managers and engineering staff of universities, Polish Academy of Sciences, R&D institutions, industry, specializing in polymer chemistry, physical chemistry, technology and processing. “Polimery” publishes original, reviewed research, scientific and technology papers in the field of polymer synthesis, analysis, technology and modification, processing, properties, applications and recycling.