Effects of thermal‐oxidative aging on the flammability, thermal degradation kinetics and mechanical properties of DBDPE flame retardant long glass fiber reinforced polypropylene composites

Guo, Jianbing; Wang, Meng; Li, Lingtong; Wang, Jian; He, Weidi; Chen, Xiaolang

doi:10.1002/pc.24720

Cited by 13 publications

(7 citation statements)

References 35 publications

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“…Many studies regarding thermal ageing of carbon-epoxy composites are available in the literature [14,15,16,17,18,19,20,21,22,23,24,25]; however, the effect of ageing and how the mechanical properties of the aged materials are modified are not completely understood [20]. According to the available literature, a slight increase in the mechanical properties of CFRP is observed at the first stage of ageing that is called consolidation phase.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Ageing on the Impact and Flexural Damage Behaviour of Carbon Fibre-Reinforced Epoxy Laminates

et al. 2019

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Most of the composite materials that are used in aerospace structures have been manufactured using a thermostable matrix, as epoxy resin. The region of stability of these polymers is defined by the glass transition temperature (Tg). However, operating temperatures close and above the Tg can cause a variation in the properties of the polymer and consequently, modify the mechanical properties of the composite material. Therefore, it is necessary to understand the failure mechanisms that occur in the material in order to ensure stability and durability. The effect of temperature and time of exposure on the impact and flexural mechanical responses of carbon/epoxy composites are studied in this work. For that purpose, ageing treatments at temperatures below and above the Tg have been considered and then, impact and flexural tests have been performed. It was observed that thermal ageing cause two different effects: at temperatures below the Tg, there is an increase of the maximum strength because of a post-curing effect; however, the mechanical properties decrease at higher temperatures of thermal ageing due to the thermo-oxidation of the epoxy resin and the loss of adhesion in the matrix/fibre interface.

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Section: Introductionmentioning

confidence: 99%

Effect of Thermal Ageing on the Impact and Flexural Damage Behaviour of Carbon Fibre-Reinforced Epoxy Laminates

et al. 2019

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“…Unlike thermoplastic polymers that can be deformed plastically as many times as necessary without disturbing the initial properties of the material, thermosetting polymers are susceptible to thermal degradation. The effect of thermal ageing on the mechanical performance of polymer composites has been studied a limited number of times [22,23,24,25,26,27,28,29,30,31,32,33,34].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Ageing on the Impact Damage Resistance and Tolerance of Carbon-Fibre-Reinforced Epoxy Laminates

et al. 2019

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Composite structures are particularly vulnerable to impact, which drastically reduces their residual strength, in particular, at high temperatures. The glass-transition temperature (Tg) of a polymer is a critical factor that can modify the mechanical properties of the material, affecting its density, hardness and rigidity. In this work, the influence of thermal ageing on the low-velocity impact resistance and tolerance of composites is investigated by means of compression after impact (CAI) tests. Carbon-fibre-reinforced polymer (CFRP) laminates with a Tg of 195 °C were manufactured and subjected to thermal ageing treatments at 190 and 210 °C for 10 and 20 days. Drop-weight impact tests were carried out to determine the impact response of the different composite laminates. Compression after impact tests were performed in a non-standard CAI device in order to obtain the compression residual strength. Ultrasonic C-scanning of impacted samples were examined to assess the failure mechanisms of the different configurations as a function of temperature. It was observed that damage tolerance decreases as temperature increases. Nevertheless, a post-curing process was found at temperatures below the Tg that enhances the adhesion between matrix and fibres and improves the impact resistance. Finally, the results obtained demonstrate that temperature can cause significant changes to the impact behaviour of composites and must be taken to account when designing for structural applications.

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“…Glass fiber (GF) possesses excellent mechanical properties and is widely utilized for strengthening or toughening polymers 24 . Additionally, its lightweight nature, low thermal conductivity, good temperature resistance, and affordability make it an ideal candidate as a fillers to tune the performance of PI‐based composites 25,26 …”

Section: Introductionmentioning

confidence: 99%

“…24 Additionally, its lightweight nature, low thermal conductivity, good temperature resistance, and affordability make it an ideal candidate as a fillers to tune the performance of PI-based composites. 25,26 In this study, GF reinforced PI composites (GFRPCs) were fabricated using a simple ball-milling and hotpressing techniques. The cone calorimeter test (CCT) and thermogravimetric analysis (TGA) were constructed to evaluate the thermal stability and flame retardancy of the GFRPCs.…”

mentioning

confidence: 99%

Investigation on flame‐retardant, thermal and mechanical properties of glass fiber reinforced polyimide composites

He,

Liu,

Jiao

2023

Polymer Composites

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Composites with excellent flame retardant and mechanical properties are in high demand in the aerospace and various industrial fields. Glass fiber (GF) reinforced polyimide (PI) composites (GFRPCs) were fabricated using a simple ball milling and hot pressing technique. The effect of GF content on the thermal stability, mechanical and flame retardant properties of composites has been systematically studied. The Rockwell hardness of GFRPCs increase with increasing GF content, while the compressive strength, impact strength and flexural strength initially show an increase followed by a decrease due to the excellent dispersibility of the fillers and the strong interfacial interaction between the one‐dimensional GF and PI matrix. Thermogravimetric analysis results show that the addition of GF with very low thermal conductivity and excellent temperature resistance can effectively improve the thermal stability of PI. Adding GF into PI can obviously improve the limiting oxygen index value. Moreover, as the GF content increased, the time to ignition of the composites prolonged while total heat release decreased. These findings suggest a viable solution for enhancing both the flame retardance and mechanical properties of PI‐based composites.Highlights GFRPCs with high GF content fabricated via ball milling‐hot pressing method. Silane modified GF obviously improves the thermal stability of PI matrix. GFRPCs‐28 exhibits superior mechanical properties. An increases in time to ignition (TTI) and mass residual rate (MRR) of the GFRPCs was observed on adding GF.

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Effects of thermal‐oxidative aging on the flammability, thermal degradation kinetics and mechanical properties of DBDPE flame retardant long glass fiber reinforced polypropylene composites

Cited by 13 publications

References 35 publications

Effect of Thermal Ageing on the Impact and Flexural Damage Behaviour of Carbon Fibre-Reinforced Epoxy Laminates

Effect of Thermal Ageing on the Impact and Flexural Damage Behaviour of Carbon Fibre-Reinforced Epoxy Laminates

Effect of Thermal Ageing on the Impact Damage Resistance and Tolerance of Carbon-Fibre-Reinforced Epoxy Laminates

Investigation on flame‐retardant, thermal and mechanical properties of glass fiber reinforced polyimide composites

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