The impact of accelerated aging on the mechanical and thermal properties and VOC emission of polypropylene composites reinforced with glass fibers

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-12-05 DOI:10.1515/ipp-2022-4268

A. Rüppel, Susanne Wolff, H. Heim

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引用次数: 1

Abstract

Abstract This paper presents the impact of accelerated aging on selected mechanical and thermal properties and VOC emission of polypropylene composites filled with glass fiber with different fiber contents. Due to their positive properties (good thermal and mechanical properties, low weight), glass fiber reinforced thermoplastics are becoming increasingly important. Fiber reinforced thermoplastics are mainly produced by injection molding and extrusion, whereby the extrusion compounding process is primarily used to prepare fiber-filled granulates while the injection molding process is used to manufacture products. In this study, short glass fiber reinforced thermoplastics (polypropylene) are produced on a twin screw extruder. Then, tensile test specimens are produced by injection molding. The glass fiber content is between 20 and 40 wt%. In order to investigate the long-term stability, the test specimens are artificially aged in accordance with ASTM 1980. The thermal, mechanical, and emission properties were evaluated by means of differential scanning calorimetry (DSC), tensile tests, and TDS-GC-MS analysis prior to and after accelerated aging. The objective of this study was to investigate the effects of thermal aging on crystallinity and mechanical properties and on VOC emission of glass fiber reinforced isotactic polypropylene.

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加速老化对玻璃纤维增强聚丙烯复合材料力学性能、热性能及VOC排放的影响

摘要本文研究了加速老化对不同纤维含量的玻璃纤维填充聚丙烯复合材料的力学性能、热性能和VOC排放的影响。玻璃纤维增强热塑性塑料由于其积极的性能（良好的热性能和机械性能，低重量）而变得越来越重要。纤维增强热塑性塑料主要通过注射成型和挤出生产，其中挤出复合工艺主要用于制备纤维填充颗粒，而注射成型工艺用于制造产品。在本研究中，短玻璃纤维增强热塑性塑料（聚丙烯）是在双螺杆挤出机上生产的。然后，通过注射成型制备拉伸试样。玻璃纤维含量在20和40重量%之间。为了研究长期稳定性，根据ASTM 1980对试样进行人工老化。在加速老化前后，通过差示扫描量热法（DSC）、拉伸试验和TDS-GC-MS分析来评估热性能、机械性能和发射性能。本研究的目的是研究热老化对玻璃纤维增强全同立构聚丙烯结晶度和力学性能以及VOC排放的影响。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.