Studies on the effect of different levels of toughener and flame retardants on thermal stability of epoxy resin

2010 ◽  
Vol 95 (2) ◽  
pp. 144-152 ◽  
Author(s):  
Baljinder K. Kandola ◽  
Bhaskar Biswas ◽  
Dennis Price ◽  
A. Richard Horrocks
Keyword(s):  
Thermal Stability ◽  
Epoxy Resin ◽  
Flame Retardants ◽  
Different Levels ◽  
Thermal Stability Of

Nanocomposite Epoxy Resin for SiC Module

2011 ◽  
Vol 2011 (HITEN) ◽  
pp. 000196-000200 ◽  
Author(s):  
Kenji Okamoto ◽  
Yuji Takematsu ◽  
Miyako Hitomi ◽  
Yoshinari Ikeda ◽  
Yoshikazu Takahashi
Keyword(s):  
Thermal Stability ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Epoxy Resin ◽  
Molecular Motion ◽  
Experimental Results ◽  
Power Module ◽  
Operation Temperature ◽  
Thermal Stability Of

There is a demand to improve the thermal stability of epoxy molding resins used in the power module of SiC power chips operating at temperatures of 200°C or more. This paper describes a technique for increasing the thermal stability of the resin by decreasing molecular motion through the addition of nanofiller. The experimental results showed that the glass transition temperature (Tg) of the epoxy resin increased by approximately 30°C when the silica nanofiller was added. The epoxy resin added nanofiller was investigated in order to achieve the operation temperature 200°C of power module.

Flame-retardant behaviors of aluminum phosphates coated sepiolite in epoxy resin

2020 ◽  
pp. 073490412093408
Author(s):  
Wei Yan ◽  
Pu Xie ◽  
Zhengwei Yang ◽  
Guangjin Luo ◽  
Weijiang Huang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Mechanical Performance ◽  
Oxygen Index ◽  
One Pot ◽  
Heterogeneous Precipitation ◽  
Aluminum Phosphates ◽  
Thermal Stability Of ◽  
Limited Oxygen

Aluminum phosphates coated sepiolite nanocomposite was fabricated via a simple one-pot heterogeneous precipitation strategy, and the effects of aluminum phosphates on the morphology of aluminum phosphates coated sepiolite were investigated. Moreover, the effect of aluminum phosphates coated sepiolite on the flame-retardant behavior, mechanical properties, and thermal stability of epoxy resin have been discussed. The results indicated that the introduction of only 20 wt% aluminum phosphates coated sepiolite in epoxy resin increased the limited oxygen index from 21.8% to 30.1%, thus the material met the UL-94 V-0 rating. Thermogravimetric analyses revealed that char yield increased in the presence of aluminum phosphates coated sepiolite form thermally stable carbonaceous char. Aluminum phosphates–coated sepiolite could improve the mechanical performance, thermal stability of epoxy resin.

Synthesis and Application of a Novel Intumescent Flame Retardant Containing Ferrocenyl

2014 ◽  
Vol 1033-1034 ◽  
pp. 931-936
Author(s):  
Cong Yan Chen ◽  
Rui Lan Fan ◽  
Guan Qun Yun
Keyword(s):  
Thermal Stability ◽  
Flame Retardant ◽  
Flame Retardants ◽  
Intumescent Flame Retardant ◽  
Limiting Oxygen Index ◽  
Good Thermal Stability ◽  
H Nmr ◽  
Positive Effect ◽  
Thermal Stability Of ◽  
Phosphate Groups

A novel intumescent flame retardant (IFR) containing ferrocene and caged bicyclic phosphate groups, 1-oxo-4-[4'-(ferrocene carboxylic acid phenyl ester)] amide-2, 6, 7-trioxa-1-phosphabicyclo- [2.2.2] octane (PFAM), was successfully synthesized. The synthesized PFAM were added to flammable polyurethane (PU) as flame retardants and smoke suppressants. The structure of PFAM was characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (1H NMR) and elemental analysis. Thermal stability of PFAM was tested by themogravimetric analysis (TGA). The results revealed that PFAM had good thermal stability and high char weight, the char weight up to 54% at 600 °C. Flammability properties of PU/PFAM composites were investigated by limiting oxygen index (LOI) test and UL-94 test, respectively. The results of LOI tests showed that the addition of PFAM enhanced flame retardancy of PU. When the content of PFAM reaches to 3%, the LOI value is 22.2. The morphologies of the char for PU and PU/3% PFAM composite can be obtained after LOI testing were examined by SEM. The results demonstrated that PFAM could promote to form the compact and dense intumescent char layer. Experiments showed that, the PFAM application of polyurethane showed positive effect.

Effects of novel reactive toughening agent on thermal stability of epoxy resin

2011 ◽  
Vol 108 (2) ◽  
pp. 685-693 ◽  
Author(s):  
I. Blanco ◽  
L. Oliveri ◽  
G. Cicala ◽  
A. Recca
Keyword(s):  
Thermal Stability ◽  
Epoxy Resin ◽  
Thermal Stability Of ◽  
Toughening Agent

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.

Preparation of layered graphitic carbon nitride/montmorillonite nanohybrids for improving thermal stability of sodium alginate nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (16) ◽  
pp. 11761-11765 ◽  
Author(s):  
Lu Liu ◽  
Yongqian Shi ◽  
Bin Yu ◽  
Qilong Tai ◽  
Bibo Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Sodium Alginate ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Different Levels ◽  
Thermal Stability Of

Graphitic carbon nitride (g-C3N4)/montmorillonite (Na-MMT) nanohybrids were fabricated and introduced into a sodium alginate with different levels. The introduction of 4.0 wt% nanohybrids led to the maximal improvement by ca. 149 °C in thermal stability.

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