PMID- 31248169
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 11
IP  - 6
DP  - 2019 Jun 19
TI  - Synthesis of a Novel Phosphorous-Nitrogen Based Charring Agent and Its 
      Application in Flame-retardant HDPE/IFR Composites.
LID - 10.3390/polym11061062 [doi]
LID - 1062
AB  - In this work, a novel phosphorous-nitrogen based charring agent named 
      poly(1,3-diaminopropane-1,3,5-triazine-o-bicyclic pentaerythritol phosphate) 
      (PDTBP) was synthesized and used to improve the flame retardancy of high-density 
      polyethylene (HDPE) together with ammonium polyphosphate (APP). The results of 
      Fourier transform infrared spectroscopy (FTIR) and (13)C solid-state nuclear 
      magnetic resonance (NMR) showed that PDTBP was successfully synthesized. Compared 
      with the traditional intumescent flame retardant (IFR) system contained APP and 
      pentaerythritol (PER), the novel IFR system (APP/PDTBP, weight ratio of 2:1) 
      could significantly promote the flame retardancy, water resistance, and thermal 
      stability of HDPE. The HDPE/APP/PDTBP composites (PE3) could achieve a UL-94 V-0 
      rating with LOI value of 30.8%, and had a lower migration percentage (2.2%). 
      However, the HDPE/APP/PER composites (PE5) had the highest migration percentage 
      (4.7%), lower LOI value of 23.9%, and could only achieve a UL-94 V-1 rating. 
      Besides, the peak of heat release rate (PHRR), total heat release (THR), and fire 
      hazard value of PE3 were markedly decreased compared to PE5. PE3 had higher 
      tensile strength and flexural strength of 16.27 +/- 0.42 MPa and 32.03 +/- 0.59 MPa, 
      respectively. Furthermore, the possible flame-retardant mechanism of the 
      APP/PDTBP IFR system indicated that compact and continuous intumescent char layer 
      would be formed during burning, thus inhibiting the degradation of substrate 
      material and improving the thermal stability of HDPE.
FAU - Chen, Junlei
AU  - Chen J
AD  - School of Materials Science and Engineering, Wuhan University of Technology, 122 
      Luoshi Road, Wuhan 430070, China. junleichen@whut.edu.cn.
FAU - Wang, Jihui
AU  - Wang J
AD  - School of Materials Science and Engineering, Wuhan University of Technology, 122 
      Luoshi Road, Wuhan 430070, China. jhwang@whut.edu.cn.
AD  - State Key Laboratory of Advanced Technology for Materials Synthesis and 
      Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China. 
      jhwang@whut.edu.cn.
FAU - Ni, Aiqing
AU  - Ni A
AUID- ORCID: 0000-0002-6913-2728
AD  - State Key Laboratory of Advanced Technology for Materials Synthesis and 
      Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China. 
      ani@whut.edu.cn.
FAU - Chen, Hongda
AU  - Chen H
AD  - School of Materials Science and Engineering, Wuhan University of Technology, 122 
      Luoshi Road, Wuhan 430070, China. Hongdachen@whut.edu.cn.
FAU - Shen, Penglong
AU  - Shen P
AD  - School of Materials Science and Engineering, Wuhan University of Technology, 122 
      Luoshi Road, Wuhan 430070, China. spl666@whut.edu.cn.
LA  - eng
GR  - 2017M622537/China Postdoctoral Science Foundation/
PT  - Journal Article
DEP - 20190619
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC6631776
OTO - NOTNLM
OT  - flame retardancy mechanism
OT  - intumescent flame retardant
OT  - mechanical properties
OT  - polyethylene composites
OT  - thermal properties
COIS- The authors declare no conflict of interest. The funders had no role in the 
      design of the study; in the collection, analyses, or interpretation of data; in 
      the writing of the manuscript, or in the decision to publish the results.
EDAT- 2019/06/30 06:00
MHDA- 2019/06/30 06:01
PMCR- 2019/06/19
CRDT- 2019/06/29 06:00
PHST- 2019/05/05 00:00 [received]
PHST- 2019/05/31 00:00 [revised]
PHST- 2019/06/06 00:00 [accepted]
PHST- 2019/06/29 06:00 [entrez]
PHST- 2019/06/30 06:00 [pubmed]
PHST- 2019/06/30 06:01 [medline]
PHST- 2019/06/19 00:00 [pmc-release]
AID - polym11061062 [pii]
AID - polymers-11-01062 [pii]
AID - 10.3390/polym11061062 [doi]
PST - epublish
SO  - Polymers (Basel). 2019 Jun 19;11(6):1062. doi: 10.3390/polym11061062.