Determination of thermal decomposition kinetic parameters of glass-fiber/epoxy composite

Minsun, 陈敏孙 Chen; Houman, 江厚满 Jiang; Zejin, 刘泽金 Liu

doi:10.3788/hplpb20102209.1969

Cited by 11 publications

(6 citation statements)

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“…According to E1356-08 [18], The T g value is usually the midpoint temperature of resin glass transition. The T d value can be considered as the temperature point where the weight loss of CFRP composites reaches the peak (the peak point of DTG curve) [19]. Based on the previous experimental study, the T g and T d of epoxy resins from the same batches were 126 °C and 405 °C, respectively [20].…”

Section: Experimental Programmentioning

confidence: 99%

Effect of Temperature on Material Properties of Carbon Fiber Reinforced Polymer (CFRP) Tendons: Experiments and Model Assessment

et al. 2019

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Material properties at elevated temperatures are important factors in the fire safety design and numerical analysis of concrete members strengthened with fiber reinforced polymer (FRP) composites. Most of the previous research mainly focused on tensile strength and elastic modulus in conventional steady state temperature tests. However, the transient state test method is more realistic for strengthening concrete structures. At the same time, the coefficient of thermal expansion of FRP composites is also one of the important factors affecting concrete members at elevated temperatures. This paper presents a detailed experimental investigation on the longitudinal thermal expansion deformation, and the mechanical properties of carbon FRP (CFRP) tendons with 8 mm diameter in the steady state and transient state. The results indicate that longitudinal deformation of CFRP tendons is negative at high temperature; in addition, the transient state test results of CFRP tendons are slightly higher than the steady state test results. The final part of this paper assesses the accuracy of different empirical models. Furthermore, a new equation calculating the properties of CFRP composites at elevated temperatures is presented with the numerical fitting technique, which is in good agreement with the experimental results.

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Section: Experimental Programmentioning

confidence: 99%

Effect of Temperature on Material Properties of Carbon Fiber Reinforced Polymer (CFRP) Tendons: Experiments and Model Assessment

et al. 2019

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“…It can be clearly seen that only one distinct inflection point appeared in all TG curves, which corresponded to the respective peak of the DTG curve. Therefore, a one-stage process was manifested in the thermal decomposition of GF/BMI composites because GF could not react within the pyrolysis temperature interval in the inert atmosphere [ 25 ], only the BMI in GF/BMI composites underwent thermal decomposition. At the same time, the residual weight around 60% in the TG curves also confirmed this phenomenon.…”

Section: Resultsmentioning

confidence: 99%

“…There has also been some progress on the effect of the flame retardant modification applied to the copper-clad matrix on the flammability and mechanical and dielectric properties of GF/BMI composites [ 8 , 23 , 24 ]. In contrast, research on the thermal behavior and fire reaction properties of GF/BMI composites for aeronautic applications is fairly limited [ 13 , 25 ]. Drukker et al [ 26 ] investigated the chemical, physical, and mechanical properties of GF/BMI laminates with varying laminate thicknesses exposed to high temperatures, and found that the interlaminar shear strength decreased, the glass transition temperature increased, the resin underwent chemical changes, and the degradation also became more significant at higher temperatures as well.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Thermal and Fire Reaction Properties of Glass Fiber/Bismaleimide Composites for Aeronautic Application

Wang

et al. 2023

Polymers

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Thermal behavior and fire reaction properties of aerial glass fiber (GF)/bismaleimide (BMI) composites were tested using thermogravimetric analysis (TGA), thermogravimetric coupled with Fourier transform infrared spectroscopy (TG-FTIR), cone calorimeter, limiting oxygen index, and smoke density chamber. The results showed that the pyrolysis process was one stage in a nitrogen atmosphere with the prominent volatile components of CO2, H2O, CH4, NOx, and SO2. The release of heat and smoke increased with the increase in heat flux, while the time required to reach hazardous conditions decreased. The limiting oxygen index decreased monotonically from 47.8% to 39.0% with increasing experimental temperature. The maximum specific optical density within 20 min in the non-flaming mode was greater than that in the flaming mode. According to the four kinds of fire hazard assessment indicators, the greater the heat flux, the higher the fire hazard, for the contribution of more decomposed components. The calculations of two indices confirmed that the smoke release in the early stage of fire was more negative under flaming mode. This work can provide a comprehensive understanding of the thermal and fire characteristics of GF/BMI composites used for aircraft.

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“…At present, there are few studies on the thermal decomposition kinetics of glass fiber composites, and the thermal decomposition kinetics of different types of glass fiber composites are usually quite different [16,17]. Reference [18] calculated the thermal decomposition kinetic parameters of glass—fiber/epoxy composite based on the multi-step decomposing model of Arrhenius equation and the direct solution method; it proved that the thermal decomposition kinetics parameters obtained by direct solution are correct and effective. Reference [19] studied the thermal decomposition reaction of 4-hydroxypyridine blocked isophorone diisocyanate and analyzed the thermal decomposition reaction kinetics by the Friedman–Reich–Levi (FRL) equation, Flynn-Wall-Ozawa (FWO) equation, and Crane equation.…”

Section: Methodsmentioning

confidence: 99%

5000 h Multi-Factor Accelerated Aging Test of FRP Made Transmission Tower: Characterization, Thermal Decomposition and Reaction Kinetics Study

et al. 2017

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Three kinds of fiber reinforced plastic (FRP) composites, including modified polyurethane resin (LGD), epoxy resin (E44) and modified unsaturated polyester resin (D33) glass-fiber reinforced plastics, were subjected to a 5000 h multi-factor accelerated aging test according to the power industry standard. To examine aging resistance and thermal stability of transmission towers made by these three composites, relevant bending properties, thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), activation energy, as well as microscopic morphology were revealed. The results showed that for these composites, bending modulus retention rates were higher than 94% under the aging test and that of the LGD was highest. Additionally, the onset degradation temperature, temperature at maximum rate of weight loss and T 5% reduced at 5000 h, with D33 having highest value and lowest decline rate. The activation energy was calculated with the Bagchi, Coats-Redfern and Broido method, respectively. Although the activation energy of all composites decreased after test, the D33, LGD materials had the highest activation energy which enjoys slight decline. Analysis of the whole experimental results suggested that D33 and LGD composites have good aging resistance, whose basic performance could still perform well after 5000 h aging test, so they can be used to composite towers and applied to engineering practice.

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Determination of thermal decomposition kinetic parameters of glass-fiber/epoxy composite

Cited by 11 publications

References 0 publications

Effect of Temperature on Material Properties of Carbon Fiber Reinforced Polymer (CFRP) Tendons: Experiments and Model Assessment

Effect of Temperature on Material Properties of Carbon Fiber Reinforced Polymer (CFRP) Tendons: Experiments and Model Assessment

Experimental Study of Thermal and Fire Reaction Properties of Glass Fiber/Bismaleimide Composites for Aeronautic Application

5000 h Multi-Factor Accelerated Aging Test of FRP Made Transmission Tower: Characterization, Thermal Decomposition and Reaction Kinetics Study

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