Next Article in Journal
Structural Parameters Affecting Electrothermal Properties of Woolen Knitted Fabrics Integrated with Silver-Coated Yarns
Previous Article in Journal
Kenaf Composites for Automotive Components: Enhancement in Machinability and Moldability
Article

Synthesis of K-Carrageenan Flame-Retardant Microspheres and Its Application for Waterborne Epoxy Resin with Functionalized Graphene

by 1,2,*, 1, 1, 1, 1 and 3,*
1
Sino-Spanish Advanced Materials Institute, Shenyang University of Chemical Technology, Shenyang 110142, China
2
Advanced Manufacturing Institute of Polymer Industry (AMIPI), Shenyang University of Chemical Technology, Shenyang 110142, China
3
IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain
*
Authors to whom correspondence should be addressed.
Polymers 2019, 11(10), 1708; https://doi.org/10.3390/polym11101708
Received: 3 October 2019 / Revised: 15 October 2019 / Accepted: 16 October 2019 / Published: 17 October 2019
In this article, the intumescent flame-retardant microsphere (KC-IFR) was prepared by inverse emulsion polymerizations, with the use of k-carrageenan (KC) as carbon source, ammonium polyphosphate (APP) as acid source, and melamine (MEL) as gas source. Meanwhile, benzoic acid functionalized graphene (BFG) was synthetized as a synergist. A “four-source flame-retardant system” (KC-IFR/BFG) was constructed with KC-IFR and BFG. KC-IFR/BFG was blended with waterborne epoxy resin (EP) to prepare flame-retardant coatings. The effects of different ratios of KC-IFR and BFG on the flame-retardant properties of EP were investigated. The results showed that the limiting oxygen index (LOI) values increased from 19.7% for the waterborne epoxy resin to 28.7% for the EP1 with 20 wt% KC-IFR. The addition of BFG further improved the LOI values of the composites. The LOI value reached 29.8% for the EP5 sample with 18 wt% KC-IFR and 2 wt% BFG and meanwhile, UL-94 test reached the V-0 level. In addition, the peak heat release (pHRR) and smoke release rate (SPR) of EP5 decreased by 63.5% and 65.4% comparing with EP0, respectively. This indicated the good flame-retardant and smoke suppression property of EP composites coating. View Full-Text
Keywords: k-carrageenan; microsphere; waterborne epoxy; flame retardancy k-carrageenan; microsphere; waterborne epoxy; flame retardancy
Show Figures

Graphical abstract

MDPI and ACS Style

Wang, N.; Teng, H.; Yang, F.; You, J.; Zhang, J.; Wang, D. Synthesis of K-Carrageenan Flame-Retardant Microspheres and Its Application for Waterborne Epoxy Resin with Functionalized Graphene. Polymers 2019, 11, 1708. https://doi.org/10.3390/polym11101708

AMA Style

Wang N, Teng H, Yang F, You J, Zhang J, Wang D. Synthesis of K-Carrageenan Flame-Retardant Microspheres and Its Application for Waterborne Epoxy Resin with Functionalized Graphene. Polymers. 2019; 11(10):1708. https://doi.org/10.3390/polym11101708

Chicago/Turabian Style

Wang, Na, Haiwei Teng, Fei Yang, Jiaqi You, Jing Zhang, and Deyi Wang. 2019. "Synthesis of K-Carrageenan Flame-Retardant Microspheres and Its Application for Waterborne Epoxy Resin with Functionalized Graphene" Polymers 11, no. 10: 1708. https://doi.org/10.3390/polym11101708

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop