Influence of Mold Temperature Associated with Glass Fiber on the Mechanical and Thermal Properties of a (PA6/GF/MMT) Nanocomposite

Materia

Batiston, Eduardo Roberto¹  Fiori, Márcio Antônio¹  Mello, Josiane Maria Muneron de¹  Silva, Luciano Luiz¹  Riella, Humberto Gracher²  Duarte, Glaucea Warmeling²  Damiani, Renato Adriano³ 

[1] Universidade Comunitária da Região de Chapecó, Chapecó, Brazil;Universidade Federal de Santa Catarina, Florianópolis, Brazil;Universidade do Extremo Sul Catarinense, Criciúma, Brazil

关键词: Polymer-matrix composites (PMCs);    Glass Fiber;    Injection Molding..;   

DOI  :  10.1590/s1517-707620170001.0131

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

This work describes the second of a series of studies of the effects of injection molding conditions on the mechanical and thermal properties of Polyamide 6/Glass Fiber/Montmorillonite (PA6/GF/MMT) composites and was motivated by the lack of information about how the processing variables influence on the properties of three-phase composites containing fiber glass. By this time, the effects of the injection molding temperature associated with the fiber glass percentage on the mechanical and thermal properties of the composite are investigated. Some samples were processed, following a statistical experimental factorial planning, varying the mold temperature and the fiber glass percentage and maintaining 5 wt % of the MMT. The samples were submitted to tensile and flexural tests, XRD, SEM and DSC. The studies showed that an increase in the mold temperature and the fiber percentage improves the maximum tensile and flexural stresses. The increased mold temperature slows the cooling rate, which, over time, decreases the degree of crystallinity. However, there is an increase in the intercalation of the polymeric chains and the nanoclay lamellae, and the structure forms with fewer defects.

【 授权许可】

CC BY