Synergistic flame retardant effects of composites containing organic montmorillonite, Nylon 6 and 2-cyclic pentaerythritoloctahydrogen tetraphosphate-4,6-benzene sulfonic acid sodium ammion-triazine

Wang, Chao; Li, Yingchun; Hu, Guosheng; Cao, Dong-hao

doi:10.1016/s1872-5805(15)60184-6

Cited by 7 publications

(1 citation statement)

References 23 publications

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“…16,17 Inorganic flame retardants have been frequently used in flame-retardant EPs, due to their low cost, low toxicity, and high thermal stability. 18,19 Organically modified montmorillonite (OMMT) has often been the compound of choice for improving the flame resistance and thermal properties of EPs, 20,21 polypropylene, 22 polyamides, 23 and ethylene-propylene-diene terpolymer (EPDM). 24 OMMT can serve as a protective barrier against flame, suppress smoke, and act as a heat storage medium.…”

Section: Introductionmentioning

confidence: 99%

Enhanced flame retardancy of epoxy resin containing a phenethyl-bridged DOPO derivative/montmorillonite compound

Yan

Zhang

et al. 2017

Journal of Fire Sciences

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A phenethyl-bridged 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) derivative (DiDOPO) was combined with organically modified montmorillonite and incorporated into an epoxy resin to improve its flame retardancy. When only 3.5 wt% DiDOPO/3.5 wt% organically modified montmorillonite was introduced into epoxy resin, the limited oxygen index rose from 21.8% to 32.2% and achieved a V-0 rating in the UL 94 test. The decomposition and pyrolysis products in the gaseous phase were characterized by thermogravimetry-Fourier transform infrared spectroscopy. The increase in char yield was restricted due to the incorporation of organically modified montmorillonite. Moreover, a large amount of phosphorus was released into the gaseous phase. The evaluation of flame retardancy, based on cone calorimeter data, testified that organically modified montmorillonite improved the protective-barrier effect of the fire due to the epoxy resin/DiDOPO/organically modified montmorillonite residue, which was also proved from the digital photographs and scanning electron microscopy results. Combination of the protectivebarrier effect of organically modified montmorillonite and the flame-inhibition effect of DiDOPO exerted a superior flame-retardancy effect, resulting in good performance of epoxy resin/ DiDOPO/organically modified montmorillonite flame-retardant. Overall, organically modified montmorillonite was an efficient adjuvant for the flame-retardant epoxy resin/DiDOPO system.

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