Adhesive hybrid nanocomposites for potential applications in moulding sands technology

• Published in: Composites. Part B, Engineering Engineering, 2018-08, Vol.146, p.124-131
• Main Authors: Kmita, Angelika, Drożyński, Dariusz, Roczniak, Agnieszka, Gajewska, Marta, Marciszko, Marianna, Górecki, Kamil, Baczmański, Andrzej
• Format: Article
• Language: English
• Subjects: Adhesion; Hybrid; Moulding compounds; Polymer-matrix composites (PMCs)
• ISSN: 1359-8368; 1879-1069
• DOI: 10.1016/j.compositesb.2018.03.046

The results of investigations concerning the production of nanocomposite based on phenol-formaldehyde resin, resol type, with organophilic montmorillonite MMT Na (ogranophilic MMT Na), for applications in the moulding sands technology, are presented in the hereby paper. This composite with mass fractions of: 0.75; 1.5 or 3 mas.% of nanofiller constituted the point of departure for investigating: X-Ray diffraction (XRD), microstructure by transmission electron microscopy (TEM), physical-chemical properties (η viscosity), strength (tensile strength Rmu; flexural strength Rg) and abrasive wear investigations of moulding sands. The performed investigations indicate that the produced nanocomposite has an intercalated structure and its viscosity increases with an increase of the nanofiller fraction. The optimal nanofiller fraction in a binder, above which mechanical properties in the system binder-mineral matrix are getting worse, was found. Thermal degradation behavior cured binder used in foundry process were studied using a convectional dynamic thermogravimetric analysis (TG) and (differential scanning calorimetry) DSC. •There is a possibility of forming nanocomposite of the type: phenol-formaldehyde resin, resol type/organophilic MMT Na.•The strength properties of moulding sands are the best, when the nanofiller fraction in the polymeric matrix is optimal.•Strength increase Rmu and Rgu was app. 6 and 13% as compared with the conventional binder (in a given range of nanofillers).