PMID- 38591628
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240411
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 17
IP  - 3
DP  - 2024 Feb 5
TI  - Flame-Retardant and Transparent Unsaturated Polyester Based on P/N Liquid Flame 
      Retardants and Modified Halloysite Nanotubes.
LID - 10.3390/ma17030761 [doi]
LID - 761
AB  - Unsaturated polyester resin (UPR) with excellent flame retardant is mainly 
      obtained by adding large amounts of flame retardants, usually at the expense of 
      mechanical properties. In this work, a reactive flame retardant containing 
      phosphorus and nitrogen (DOPO-N) was successfully synthesized and incorporated in 
      UPR as a crosslinker. The mechanical and flame-retardant properties of UPR 
      composites were enhanced. UPR/30DOPO-N passed a UL-94 V-1 rating with a limiting 
      oxygen index (LOI) of 30.8%. The tensile strength of UPR/30DOPO-N increased by 
      24.4%. On this basis, a small amount of modified HNTs (VHNTs) was added to 
      further improve the flame-retardant properties of the composite. With the 
      introduction of 3 wt% VHNTs, the composite passed the UL-94 V-0 rating. The peak 
      of heat release rate (PHRR) and total heat release (THR) of it decreased by 60.7% 
      and 48.3%, respectively. Moreover, the detailed flame-retarding mechanism of 
      DOPO-N and VHNTs was investigated by thermogravimetric infrared spectroscopy 
      (TG-IR), Raman spectra, and X-ray photoelectron spectroscopy (XPS). It was found 
      that DOPO-N played a role in quenching the flame in the gas phase and cooperated 
      with VHNTs to enhance the barrier effect in the condensed phase.
FAU - Dou, Yanli
AU  - Dou Y
AD  - The Ministry of Education Key Laboratory of Automotive Material, College of 
      Materials Science and Engineering, Jilin University, Changchun 130025, China.
FAU - Ju, Aixun
AU  - Ju A
AD  - The Ministry of Education Key Laboratory of Automotive Material, College of 
      Materials Science and Engineering, Jilin University, Changchun 130025, China.
FAU - Zhong, Zheng
AU  - Zhong Z
AD  - The Ministry of Education Key Laboratory of Automotive Material, College of 
      Materials Science and Engineering, Jilin University, Changchun 130025, China.
FAU - Huo, Yutong
AU  - Huo Y
AD  - The Ministry of Education Key Laboratory of Automotive Material, College of 
      Materials Science and Engineering, Jilin University, Changchun 130025, China.
FAU - Yao, Weiguo
AU  - Yao W
AD  - The Ministry of Education Key Laboratory of Automotive Material, College of 
      Materials Science and Engineering, Jilin University, Changchun 130025, China.
LA  - eng
GR  - 20220402027GH/Jilin Province Science and Technology Development Plan Project/
PT  - Journal Article
DEP - 20240205
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC10856195
OTO - NOTNLM
OT  - DOPO
OT  - flame retardants
OT  - halloysite nanotube
OT  - unsaturated polyester resin
COIS- The authors declare that they have no conflicts to interest.
EDAT- 2024/04/09 12:43
MHDA- 2024/04/09 12:44
PMCR- 2024/02/05
CRDT- 2024/04/09 07:05
PHST- 2024/01/03 00:00 [received]
PHST- 2024/01/26 00:00 [revised]
PHST- 2024/01/30 00:00 [accepted]
PHST- 2024/04/09 12:44 [medline]
PHST- 2024/04/09 12:43 [pubmed]
PHST- 2024/04/09 07:05 [entrez]
PHST- 2024/02/05 00:00 [pmc-release]
AID - ma17030761 [pii]
AID - materials-17-00761 [pii]
AID - 10.3390/ma17030761 [doi]
PST - epublish
SO  - Materials (Basel). 2024 Feb 5;17(3):761. doi: 10.3390/ma17030761.