Influence of modified polyethylene compatibilizer on filler dispersion and flammability characteristics of linear low density polyethylene/cyclo olefin copolymer blends containing flame retardant combinations. Issue 14 (18th July 2018)

• Record Type: Journal Article
• Authors: Sánchez-Valdes, S.; Zapata-Domínguez, A. G.; Graciano-Verdugo, A. Z.; Ramos de Valle, L. F.; Morales-Cepeda, A.; Ramírez-Vargas, E.; Rodríguez-Fernandez, O. S.; Lozano-Ramírez, T.; Flores-Gallardo, S.; Espinoza-Martinez, A. B.; Méndez-Nonell, J.; Lafleur, P. G.; Karami, Shahir
• Is Part Of: Journal of adhesion science and technology. Volume 32:Issue 14(2018)
• Page Start: 1560
• Page End: 1577
• Publication Date: 2018-07-18
• Subjects: Flame retardancy -- montmorillonite -- aluminium hydroxide -- graphene oxide -- expandable graphite -- LLDPE/COC blends; Adhesion -- Periodicals; Adhesives -- Periodicals; 668.3
• DOI: 10.1080/01694243.2018.1430977
• Languages: English
• ISSNs: 0169-4243

Abstract

Abstract: In this study, the combination of organomodified montmorillonite (MMT), magnesium hydroxide (MDH), graphene oxide (GO) and expandable graphite (EG) as intumescent flame retardant for Linear Low-Density Polyethylene-Cyclo-Olefin Copolymer (LLDPE/COC) blends has been investigated. An amine-alcohol modified polyethylene (PEgDMAE) was used as compatibilizer. Limiting oxygen index (LOI), cone calorimeter determinations and flammability test (Underwriters Laboratory – UL-94) were used to evaluate the flame retardant properties. The structural characterization was measured by FTIR and scanning electron microscopy (SEM). The mechanical properties were also evaluated by Dynamic-mechanical analysis (DMA). The PEgDMAE compatibilizer enhanced the filler dispersion and increased the LOI to 22% for clay, 23% for GO and 26.5% for EG composites. The results indicated that the combination of each additive makes it possible to reduce the total Magnesium hydroxide filler content from 55 to 20% to achieve the flame retardant requirements. The flame retardant and mechanical properties of LLDPE/COC blends increased to a higher extent when using the combination of these additive fillers.