Liquid oxygen compatibility and thermal stability of bisphenol A and bisphenol F epoxy resins modified by DOPO

2014 ◽  
Vol 26 (2) ◽  
pp. 153-159 ◽  
Author(s):  
Zhanjun Wu ◽  
Jialiang Li ◽  
Zhi Wang
Keyword(s):  
Thermal Stability ◽  
Bisphenol A ◽  
Epoxy Resins ◽  
Liquid Oxygen ◽  
Bisphenol F ◽  
Thermal Stability Of

Organic solvent-free synthesis of phosphorus-containing polymers

2007 ◽  
Vol 79 (11) ◽  
pp. 1879-1884 ◽  
Author(s):  
Smaranda Iliescu ◽  
Gheorghe Ilia ◽  
Aurelia Pascariu ◽  
Adriana Popa ◽  
Nicoleta Plesu
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Bisphenol A ◽  
Organic Solvent ◽  
Molar Mass ◽  
Interfacial Polycondensation ◽  
H Nmr ◽  
Phosphorus Containing ◽  
Solvent Free Synthesis ◽  
Thermal Stability Of

Direct, efficient, organic solvent- and catalyst-free synthesis of a series of polyphosphates was accomplished. The reaction involved a gas-liquid interfacial polycondensation between arylphosphoric dichlorides and bisphenol A. The polyphosphates were characterized by IR, 1H NMR, 31P NMR, inherent viscosity, thermal analysis, and molar mass. Yields in the range 70-90 % and inherent viscosities in the range 0.30-0.40 dl/g were obtained. The thermal stability of the polyphosphates was investigated by using thermogravimetry.

Thermal and Dielectric Properties of Inorganic-Organic Nanocomposites Involving Epoxy Resin and Polyhedral Oligomeric Silsesquioxanes

2012 ◽  
Vol 476-478 ◽  
pp. 665-669 ◽  
Author(s):  
Li Yang ◽  
Miao Yin ◽  
Xiu Yun Li ◽  
Han Bing Ma
Keyword(s):  
Thermal Stability ◽  
Dielectric Constant ◽  
Dielectric Properties ◽  
Bisphenol A ◽  
Epoxy Resin ◽  
Functional Groups ◽  
Epoxy Matrix ◽  
Epoxy Resins ◽  
Diglycidyl Ether ◽  
Polyhedral Oligomeric Silsesquioxanes

In this paper, a type of nanoporous polyhedral oligomeric silisesquioxanes (POSS) containing eight functional groups have been synthesized and mixed with diglycidyl ether of bisphenol A (DGEBA) to form epoxy resin networks with nanostructures. The cured octa(aminophenyl) silsesquioxane (1c-POSS) and DGEBA system inherently possesses higher thermal stability and higher char yield than the control epoxy resins. Furthermore, the dielectric constant of the 1c-POSS/DGEBA material (4.36) is substantially lower than that of the neat epoxy resins (4.64) as a consequence the presence of nanoporous POSS cubes in the epoxy matrix.

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.

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