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Article

Novel Intumescent Flame Retardant Masterbatch Prepared through Different Processes and Its Application in EPDM/PP Thermoplastic Elastomer: Thermal Stability, Flame Retardancy, and Mechanical Properties

1
National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang 550014, China
2
Key Laboratory of Advanced Materials Technology Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
3
2011 Special Functional Materials Collaborative Innovation Center of Guizhou Province, Guizhou Institute of Technology, Guiyang 550003, China
4
Key Laboratory of Light Metal Materials Processing Technology of Guizhou Province, Guizhou Institute of Technology, Guiyang 550003, China
*
Authors to whom correspondence should be addressed.
Polymers 2019, 11(1), 50; https://doi.org/10.3390/polym11010050
Received: 29 November 2018 / Revised: 23 December 2018 / Accepted: 25 December 2018 / Published: 31 December 2018
In this work, the ethylene-propylene-diene monomer/polypropylene (EPDM/PP) thermoplastic elastomer filled with intumescent flame retardants (IFR) is fabricated by melting blend. The IFR are constituted with melamine phosphate-pentaerythritol (MP/PER) by compounding and reactive extruding, respectively. The effects of two kinds of MP/PER with different contents on the thermal stability, flame retardancy, and mechanical properties of materials are investigated by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), limiting oxygen index (LOI), UL-94, cone calorimeter test (CCT), and scanning electron microscopy (SEM). FTIR results show that the reactive extruded MP/PER partly generates melamine pyrophosphate (MPP) compared with compound masterbatches. TGA data indicate that the best thermal stability is achieved when the molar ratio of MP/PER reaches 1.8. All the reactive samples show a higher flame retardancy than compound ones. The CCT results also exhibit the same trend as above in heat release and smoke production rate. The EPDM/PP composites filled with 30 and 35% reactive MP/PER exhibit the improved flame retardancy but become stiffer and more brittle. SEM photos display that better dispersion and smaller particle size are obtained for reactive samples. View Full-Text
Keywords: ethylene-propylene-diene monomer; polypropylene; reactive extruding; intumescent flame retardant ethylene-propylene-diene monomer; polypropylene; reactive extruding; intumescent flame retardant
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MDPI and ACS Style

He, W.; Zhou, Y.; Chen, X.; Guo, J.; Zhou, D.; Chen, S.; Wang, M.; Li, L. Novel Intumescent Flame Retardant Masterbatch Prepared through Different Processes and Its Application in EPDM/PP Thermoplastic Elastomer: Thermal Stability, Flame Retardancy, and Mechanical Properties. Polymers 2019, 11, 50. https://doi.org/10.3390/polym11010050

AMA Style

He W, Zhou Y, Chen X, Guo J, Zhou D, Chen S, Wang M, Li L. Novel Intumescent Flame Retardant Masterbatch Prepared through Different Processes and Its Application in EPDM/PP Thermoplastic Elastomer: Thermal Stability, Flame Retardancy, and Mechanical Properties. Polymers. 2019; 11(1):50. https://doi.org/10.3390/polym11010050

Chicago/Turabian Style

He, Weidi, Ying Zhou, Xiaolang Chen, Jianbing Guo, Dengfeng Zhou, Shaopeng Chen, Meng Wang, and Lingtong Li. 2019. "Novel Intumescent Flame Retardant Masterbatch Prepared through Different Processes and Its Application in EPDM/PP Thermoplastic Elastomer: Thermal Stability, Flame Retardancy, and Mechanical Properties" Polymers 11, no. 1: 50. https://doi.org/10.3390/polym11010050

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