In:
Journal of Vinyl and Additive Technology, Wiley, Vol. 25, No. 3 ( 2019-08), p. 255-261
Abstract:
Nitrate intercalated hydrotalcite (NO 3 − ‐HTC) was first prepared as precursor; a schiff base derivative containing N, P, and S was synthesized and its structure was characterized. Later the schiff base derivative was used as intercalation to replace NO 3 − in hydrotalcite. The final product was schiff base derivative intercalated hydrotalcite, which was named as benzaldehyde–taurine–hypophosphorous (BTP)‐HTC. The results showed both NO 3 − ‐HTC and BTP‐HTC can effectively improve the flame retardant and thermostability of ethylene vinyl acetate (EVA). In cone calorimeter test, the peak heat release rate of EVA was 1421.2 kW/m 2 and reduced sharply to 746.1/584.5 kW/m 2 for 20 wt% NO 3 − ‐HTC/BTP‐HTC adding, respectively. At same time, the total heat release was also decreased from 120.6 MJ/m 2 for EVA to 81.0/70.0 MJ/m 2 , respectively. Morphology observation and composition analysis by scanning electron microscopy (SEM)/X‐ray spectroscopy (EDS) documented the residue left after combustion of EVA/NO 3 − ‐HTC was just ash containing Mg and Al; but for EVA/BTP‐HTC, coherent char layer containing Mg, Al, and P was left. Thermogravimetric analysis indicated that the thermal degradation of EVA was prolonged by either NO 3 − ‐HTC or BTP‐HTC; and char content was kept to 8.6% and 11.0%, respectively. The whole results documented either NO 3 − ‐HTC or BTP‐HTC improved the combustion behavior and thermostability of EVA, and BTP‐HTC showed excellent effect. J. VINYL ADDIT. TECHNOL., 25:255–261, 2019. © 2018 Society of Plastics Engineers
Type of Medium:
Online Resource
ISSN:
1083-5601
,
1548-0585
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2025176-2
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