Synthesis of a novel phosphorus-containing dicyclopentadiene novolac hardener and its cured epoxy resin with improved thermal stability and flame retardancy

2016 ◽  
Vol 134 (11) ◽  
Author(s):  
Jian-Wei Yang ◽  
Zheng-Zhou Wang ◽  
Lei Liu
Keyword(s):  
Thermal Stability ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Phosphorus Containing

Novel phosphorus-containing imidazolium as hardener for epoxy resin aiming at controllable latent curing behavior and flame retardancy

2020 ◽  
Vol 184 ◽  
pp. 107673 ◽  
Author(s):  
Ying-Jun Xu ◽  
Xiao-Hui Shi ◽  
Jia-Hui Lu ◽  
Min Qi ◽  
De-Ming Guo ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Flame Retardancy ◽  
Curing Behavior ◽  
Phosphorus Containing

scholarly journals Investigation of the Structure-Property Effect of Phosphorus-Containing Polysulfone on Decomposition and Flame Retardant Epoxy Resin Composites

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 380 ◽  
Author(s):  
Wei Zhao ◽  
Yongxiang Li ◽  
Qiushi Li ◽  
Yiliang Wang ◽  
Gong Wang
Keyword(s):  
Thermal Stability ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Phosphorus Content ◽  
Structure Property ◽  
Scanning Calorimetry ◽  
Inhibition Effect ◽  
Phosphorus Containing ◽  
High Degree ◽  
Thermal Stability Of

The flame retardant modification of epoxy (EP) is of great signification for aerospace, automotive, marine, and energy industries. In this study, a series of EP composites containing different variations of phosphorus-containing polysulfone (with a phosphorus content of approximately 1.25 wt %) were obtained. The obtained EP/polysulfone composites had a high glass transition temperature (Tg) and high flame retardancy. The influence of phosphorus-containing compounds (ArPN2, ArPO2, ArOPN2 and ArOPO2) on the thermal properties and flame retardancy of EP/polysulfone composites was investigated by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), a UL-94 vertical burning test, and cone calorimeter tests. The phosphorus-containing polysulfone enhanced the thermal stability of EP. The more stable porous char layer, less flammable gases, and a lower apparent activation energy at a high degree of conversion demonstrated the high gas inhibition effect of phosphorus-containing compounds. Moreover, the gas inhibition effect of polysulfone with a P–C bond was more efficient than the polysulfone with a P–O–C bond. The potential for optimizing flame retardancy while maintaining a high Tg is highlighted in this study. The flame-retardant EP/polysulfone composites with high thermal stability broaden the application field of epoxy.

Intumescent Flame Retardant Epoxy Resins Based on Condensation Polymers of P-Phenylenediamine and Bispirocyclic Pentaerythritol Diphosphate

2012 ◽  
Vol 482-484 ◽  
pp. 1863-1868 ◽  
Author(s):  
Ya Wen Huang ◽  
Jia Jun Ma ◽  
Jun Xiao Yang
Keyword(s):  
Thermal Stability ◽  
Thermogravimetric Analysis ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Epoxy Resins ◽  
Char Residue ◽  
Retarding Effect ◽  
Condensation Polymers ◽  
Thermal Stability Of ◽  
Sem Investigation

Copolymer of p-phenylenediamine and bispirocyclic pentaerythritol diphosphate was synthesized and characterized by FTIR and 1H NMR. This polymer was used to prepare epoxy resin/SPDA composites. Thermal stability of SPDA and epoxy/SPDA composites were investigated by thermogravimetric analysis (TGA), and their flammability were investigated by the LOI test. TGA results showed that the addition of SPDA improved the char residue of epoxy resin. SEM investigation showed that the residual chars have a honeycomb-like structure, indicating an intumescent flame retarding effect of SPDA in composites. In addition, all of above results confirmed that accelerate carbonization play a key role in improving flame retardancy of epoxy resin.

Synthesis and characterization of a novel organophosphorus oligomer and its application in improving flame retardancy of epoxy resin

RSC Advances ◽  
2014 ◽  
Vol 4 (34) ◽  
pp. 17607-17614 ◽  
Author(s):  
Nana Tian ◽  
Jiang Gong ◽  
Xin Wen ◽  
Kun Yao ◽  
Tao Tang
Keyword(s):  
Thermal Stability ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Synthesis And Characterization

A novel organophosphorus oligomer (PCPBO) was synthesized and the incorporation of PCPBO into epoxy resin (EP) significantly improved their flame retardancy and thermal stability.

Flame retardancy of epoxy resin with phosphorus-containing reactive amine and clay minerals

2006 ◽  
Vol 17 (9-10) ◽  
pp. 778-781 ◽  
Author(s):  
A. Toldy ◽  
N. Tóth ◽  
P. Anna ◽  
Gy. Keglevich ◽  
K. Kiss ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Clay Minerals ◽  
Flame Retardancy ◽  
Phosphorus Containing
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