Effects of ultraviolet solar radiation on the properties of particulate-filled epoxy based polymer coating

Khotbehsara, Mojdeh Mehrinejad; Manalo, Allan; Aravinthan, Thiru; Turner, Joanna; Ferdous, Wahid; Hota, Gangarao

doi:10.1016/j.polymdegradstab.2020.109352

Cited by 47 publications

(21 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The best results were therefore achieved with AC-S10-1 and SiO 2 -S10-1 composites, with the latter showing superior performance. This behavior could be explained by taking into account the DSC results ( Figure 4 b), where higher temperatures acquired with these nanocomposites after UV exposure were due to their improved curing reactions and promotion of the postcrosslinking effect of their polymeric network structures [ 57 ].…”

Section: Resultsmentioning

confidence: 99%

Long-Term Performance of Nanomodified Coated Concrete Structures under Hostile Marine Climate Conditions

et al. 2021

View full text Add to dashboard Cite

Epoxy resin coatings are commonly used to protect concrete structures due to their excellent chemical corrosion resistance and strong adhesion capacity. However, these coatings are susceptible to damage by surface abrasion and long-term contact with marine climate conditions, deteriorating their appearance and performance. This study aims to optimize the performance of cement-based epoxy resin coatings, bisphenol-A and polyol, in aggressive environments by functionalizing the selected systems with different nanoparticles such as activated carbon, surface modified nanoclay, silica and zinc oxide. Nanomodified coatings were applied to concrete specimens and subjected to three weeks in a spray salt chamber and three weeks in a QUV chamber. They were found to present improved thermal resistance and curing degree after the weathering test. Their water permeability, adhesion, and abrasion resistance properties were evaluated before and after this test. The results showed that the nature of the nanocomposites determined their water permeability; the bare resin presented the worst result. Additionally, nanomodified composites with activated carbon and silica showed the best adherence and abrasion resistance properties, due to the effect of this aging test on their thermal stability and curing degree.

show abstract

Section: Resultsmentioning

confidence: 99%

Long-Term Performance of Nanomodified Coated Concrete Structures under Hostile Marine Climate Conditions

et al. 2021

View full text Add to dashboard Cite

show abstract

“…One approach to improve the core properties is to use the particulate filled resin (PFR) system. Ferdous et al and Khotbehsara et al [20][21][22] developed a PFR that has superior strength properties and could be suitable for manufacturing polymer railway sleepers. However, the PFR is expensive compared to PU core since the latter one is a foam that can add volume without increasing cost.…”

Section: Findings From Sleeper Concept-1mentioning

confidence: 99%

Behaviour of Polymer Filled Composites for Novel Polymer Railway Sleepers

Ferdous

Salih

et al. 2021

Polymers

Self Cite

View full text Add to dashboard Cite

A novel concept of polymer railway sleeper is proposed in this study that has the potential to meet static performance requirements within the cost of hardwood timber. The existing challenges of composite sleepers, such as low performance or high cost, can be overcome using this innovative concept. Such a proclamation is proven through limit state design criteria and a series of experimentations. Results show that polyurethane foam as an infill material can provide sufficient strength and stiffness properties to the sleeper, but the inadequate screw holding capacity could be a problem. This limitation, however, can be overcome using a particulate filled resin system. The findings of this study will help the railway industry to develop a timber replacement sleeper.

show abstract

“…Several studies have shown that the creep behavior of PBMs depends on many factors such as matrix content [ 6 , 7 , 8 , 9 ], particle size [ 10 , 11 , 12 ], stress [ 13 , 14 , 15 ], temperature [ 16 , 17 ], and humidity [ 18 , 19 ]. The importance of long-term properties for polymer composites are highlighted in recent studies [ 20 , 21 ]. Experimental results reveal that the entire process of creep deformation can be divided into three stages [ 22 , 23 ], namely the primary (transient) creep, the secondary (stationary) creep, and the tertiary (unstable) creep.…”

Section: Introductionmentioning

confidence: 99%

A Phenomenological Primary–Secondary–Tertiary Creep Model for Polymer-Bonded Composite Materials

et al. 2021

View full text Add to dashboard Cite

This study develops a unified phenomenological creep model for polymer-bonded composite materials, allowing for predicting the creep behavior in the three creep stages, namely the primary, the secondary, and the tertiary stages under sustained compressive stresses. Creep testing is performed using material specimens under several conditions with a temperature range of 20 °C–50 °C and a compressive stress range of 15 MPa–25 MPa. The testing data reveal that the strain rate–time response exhibits the transient, steady, and unstable stages under each of the testing conditions. A rational function-based creep rate equation is proposed to describe the full creep behavior under each of the testing conditions. By further correlating the resulting model parameters with temperature and stress and developing a Larson–Miller parameter-based rupture time prediction model, a unified phenomenological model is established. An independent validation dataset and third-party testing data are used to verify the effectiveness and accuracy of the proposed model. The performance of the proposed model is compared with that of an existing reference model. The verification and comparison results show that the model can describe all the three stages of the creep process, and the proposed model outperforms the reference model by yielding 28.5% smaller root mean squared errors on average.

show abstract

Effects of ultraviolet solar radiation on the properties of particulate-filled epoxy based polymer coating

Cited by 47 publications

References 39 publications

Long-Term Performance of Nanomodified Coated Concrete Structures under Hostile Marine Climate Conditions

Long-Term Performance of Nanomodified Coated Concrete Structures under Hostile Marine Climate Conditions

Behaviour of Polymer Filled Composites for Novel Polymer Railway Sleepers

A Phenomenological Primary–Secondary–Tertiary Creep Model for Polymer-Bonded Composite Materials

Contact Info

Product

Resources

About