Thermal Degradation Behavior of Liquid Crystalline Thermoset Composites

2014 ◽  
Vol 51 (3) ◽  
pp. 122-127 ◽  
Author(s):  
Hee Jung Moon ◽  
Seung Hyun Cho
Keyword(s):  
Thermal Degradation ◽  
Liquid Crystalline ◽  
Degradation Behavior ◽  
Thermoset Composites ◽  
Thermal Degradation Behavior ◽  
Liquid Crystalline Thermoset

Study on Thermal Degradation Behavior of Composites with Liquid Crystalline Thermoset

2014 ◽  
Vol 1033-1034 ◽  
pp. 927-930
Author(s):  
Hee Jung Moon ◽  
Seung Hyun Cho
Keyword(s):  
Thermal Degradation ◽  
Liquid Crystalline ◽  
Nitrogen Atmosphere ◽  
Degradation Behavior ◽  
Melt Blending ◽  
Scanning Calorimetry ◽  
Thermal Degradation Behavior ◽  
Liquid Crystalline Thermoset ◽  
Weight Loss Process ◽  
Thermosetting Epoxy

Liquid crystalline thermosetting epoxy, 4,4’-Diglycidyloxy-α-methylstilbene (DOMS) was synthesized and characterized with cross-polarized optical microscopy (POM) and differential scanning calorimetry (DSC). Alumina reinforced DOMS composites were fabricated by melt blending with sulfanilamide (SAA) as a curing agent. To investigate thermal degradation behavior, thermogravimetric analysis (TGA) was performed under nitrogen atmosphere at the temperature range from 30 to 1000°C. Activation energies for decomposition (Ed) by TGA were determined as a function of conversion by weight loss process.

Thermal Degradation Behavior of Composites with Liquid Crystalline Epoxy and Aluminum Nitride

2015 ◽  
Vol 749 ◽  
pp. 299-303
Author(s):  
Hee Jung Moon ◽  
Bong Soo Lee ◽  
Seung Hyun Cho
Keyword(s):  
Thermal Degradation ◽  
Aluminum Nitride ◽  
Liquid Crystalline ◽  
Nitrogen Atmosphere ◽  
Curing Agent ◽  
Degradation Behavior ◽  
Melt Blending ◽  
Thermal Degradation Behavior ◽  
Liquid Crystalline Epoxy ◽  
Weight Loss Process

Liquid crystalline epoxy, 4,4’-Diglycidyloxy-α-methylstilbene (DOMS) was synthesized and Aluminum Nitride reinforced DOMS composites were fabricated by melt blending with sulfanilamide (SAA) as a curing agent. Thermal degradation behavior was investigated by thermogravimetric analysis (TGA) under nitrogen atmosphere at the temperature range from 30 to 1000°C. Activation energies for decomposition (Ed) by TGA were determined as a function of conversion by weight loss process.

scholarly journals Thermal degradation behavior and flammability of polyurethanes blended with poly(bispropoxyphosphazene)

1999 ◽  
Vol 66 (3) ◽  
pp. 307-315 ◽  
Author(s):  
Pin-Sheng Wang ◽  
Wen-Yen Chiu ◽  
Leo-Wang Chen ◽  
Bar-Long Denq ◽  
Trong-Ming Don ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Degradation Behavior ◽  
Thermal Degradation Behavior

Thermal degradation behavior of PLA composites containing bis DOPO phosphonates

2016 ◽  
Vol 639 ◽  
pp. 84-90 ◽  
Author(s):  
Qifeng Chang ◽  
Lijuan Long ◽  
Wentao He ◽  
Shuhao Qin ◽  
Jie Yu
Keyword(s):  
Thermal Degradation ◽  
Degradation Behavior ◽  
Thermal Degradation Behavior

scholarly journals Studies on Thermal Degradation Behavior of Siliceous Agriculture Waste (Rice Husk, Wheat Husk and Bagasse)

2015 ◽  
Vol 17 (3) ◽  
pp. 47-51 ◽  
Author(s):  
Syed H. Javed ◽  
Umair Aslam ◽  
Mohsin Kazmi ◽  
Masooma Rustam ◽  
Sheema Riaz ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Rice Husk ◽  
Acid Treatment ◽  
Proximate Analysis ◽  
Degradation Behavior ◽  
Agriculture Waste ◽  
Pure Silica ◽  
Thermal Degradation Behavior ◽  
Residual Weight ◽  
Wheat Husk

Abstract Various siliceous agriculture waste (SAW) such as rice husk, wheat husk and bagasse have been investigated to study their thermal degradation behavior using Thermogravimetric Analyzer (TGA) technique. The focus of this research is to conduct TGA of raw and acid treated (20% HCl & 1M H2SO4) SAW at heating rate 10°C/min in the atmosphere of nitrogen. The results were analyzed on the basis of thermograms and it was inferred that 24 hours soaking with 20% HCl prior to thermal degradation enhanced the percent weight loss. The process also improved the percentage of residual weight of SAW indicating the extraction of amorphous silica with increased purity. The effect of acid treatment was verified by determining chemical composition of SAW samples before and after soaking with 20% HCl. Proximate analysis, thermal degradation temperature ranges and percentage of residual weight at 800°C for each of rice husk, wheat husk and bagasse were also quantified to observe the thermal degradation behavior. XRF analysis was performed to observe the effect of acid treatment for extraction of pure silica.

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