Impact of Impurities of Polypropylene and Silicone Inclusionson the Properties of Polyamide 6.6 Regranulates Derivedfrom the Re-Processing of Airbags

Archives of Metallurgy and Materials

article

T. Stachowiak¹ 

[1] Częstochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Department of Technology and Automation

关键词: recycling;    composites;    polyamide 6.6;    MFR;    mechanical properties;   

DOI  :  10.24425/amm.2022.137777

学科分类：物理（综合）

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The following article presents the results of selected properties of regranulates of polyamide 6.6, regranules of polyamidecontaminated with polypropylene and regranules of polyamide contaminated with silicone. The tested materials came from thereprocessing of polyamides 6.6 originally derived from production of airbags from renowned world producers (material for the research came from production waste). The results of examination were referred to regranulates of uncontaminated polyamide butalso obtained from waste from the production of these airbags.The influence of impurities on properties of regranulates such as their density and melt flow index was assessed. The testsallowed to show a significant impact of impurities on the density but above all on the mass and volume flow rate index whichranged from 47 to 116 g/10 min.In the case of standardized test specimens selected thermal and mechanical properties were analyzed. Differential scanningcalorimetry was used to assess the impact of impurities on the thermal properties of polyamides, allowing primarily identificationof materials and impurities (especially polypropylene) as well as characteristic temperatures and the enthalpy of melting of thematerials being analyzed. The mechanical properties were assessed using a DMA device. DMA research allowed to determinechanges in mechanical properties in a wide temperature range of tested materials. It allowed to obtain full characteristics of changesin material stiffness under the influence of two factors, i.e. temperature and content of impurities, like polypropylene or silicone.

【 授权许可】

CC BY-NC