Effects of Al-based alloy powders on the mechanical behavior, corrosion resistance and infrared emissivity of polyurethane composite coatings

Ma, Zhanshan; Li, Qiang; Wei, J.Y.; Liang, Chunyong; Yang, Tai; Wang, Ge; Xia, Chaoqun

doi:10.1016/j.colsurfa.2021.126782

Cited by 14 publications

(4 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The recorded FTIR spectrum was an average of 8 scans collected between 4000 and 400 cm −1 at a resolution of 2 cm −1 . The emissivity, ε, was estimated using the RoM approach based on literature-derived values for polyurethane [31] and glass [27].…”

Section: Absorption Coefficient Of Glass-polyurethane Composite Claddingmentioning

confidence: 99%

Evaluating Fire Performance of Glass–Polyurethane Composite for Sustainable Cladding via Numerical and Empirical Simulation

Thevega,

Jayasinghe,

Kandare

et al. 2023

Polymers

View full text Add to dashboard Cite

The increased demand for cladding in high-rise buildings has prompted engineers to explore alternative products utilizing recycled materials. However, ensuring fire compliance in these alternative claddings, which are predominantly composed of low-volume polymer-based composites, poses a critical challenge. Traditional experimental methods for fire evaluation are costly, time consuming, and environmentally impactful. Considering this, a numerical approach was proposed for evaluating the fire performance of glass-polymer composite materials, which contain a high proportion of recycled glass and a lower percentage of rigid polyurethane. A cone calorimeter test was simulated using Computational Fluid Dynamics (CFD) software to investigate the flammability of the novel glass–polymer composite material. This validated numerical model was employed to assess the combustibility of the glass–polyurethane composite materials and identify influential parameters using the Design of Experiments (DoE) method. Statistical analysis revealed that three material properties, namely, the heat of combustion, the absorption coefficient, and the heat of reaction, significantly influenced the peak heat release rate (pHRR) of the glass–polyurethane composite materials compared to other properties. Based on these findings, an empirical equation was proposed that demonstrates a reasonable correlation with the pHRR of low-polymer recycled glass composite materials. The outcomes of this study hold considerable importance for understanding and predicting the combustibility behaviour of low-polymer–glass composites. By providing a validated numerical model and identifying critical material properties, this research contributes to the development of sustainable fire safety solutions for buildings, enabling the use of recycled materials and reducing reliance on conventional claddings.

show abstract

Section: Absorption Coefficient Of Glass-polyurethane Composite Claddingmentioning

confidence: 99%

Evaluating Fire Performance of Glass–Polyurethane Composite for Sustainable Cladding via Numerical and Empirical Simulation

Thevega,

Jayasinghe,

Kandare

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…The Hall-Petch connection is also used in this study [2] to explain the mechanism of grain strengthening and to demonstrate the impact of post-processing on grain size and, consequently, grain characteristics. The essential aspects of the stir casting process, including the furnace design, the characteristics of the composites, the difficulties in producing composites, and possible research prospects [3], concentrated on the effects of aluminum particles employed as reinforcement in composite materials on conductivity [4] and electrochemical energy storage, and clarified the interaction of polyaniline with aluminum particles by maintaining a consistent monomer-oxidant ratio and HCl acid dopant. Many inhibitors intercalated into LDH coatings might offer long-lasting corrosion protection.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the mechanical properties of Al2024 doped with green synthesized quantum dots

Berlin Push,

Bavanish

2023

Matéria (Rio J.)

View full text Add to dashboard Cite

This work used a novel technique known as powder metallurgy to create Aluminium (Al) 2024 matrix composites using Al 2024 reinforced with graphene quantum dots at concentrations ranging from 0.25 to 1 wt.%. Here, Al alloy 2024 is presented as a metal matrix composite reinforced with graphene quantum dots. Graphene quantum dots (GQDs) are fragments of graphene that are smaller than 100 nm in size. Graphene quantum dots are added to Al 2024 in proportions of 0.25%, 0.5%, 0.75%, and 1% to create composites. Atomic force microscopy, X-ray diffraction analysis, Fourier transform infrared, TG/DTA, transmission electron microscopy, and scanning electron microscopy experiments have been carried out to determine the characteristics of the synthesized GQD nanoparticles doped with Al 2024. This powder metallurgy process in Al 2024 offers a number of advantages. Shape and material flexibility, application variety, and cost-effectiveness are all made possible by these characteristics. The results showed that powder metallurgy is a suitable method for incorporating and dispersing nanoparticles into Al 2024.

show abstract

“…Waterborne polyurethane (WPU) has become one of the most investigated materials owing to increasingly strict environmental legislation, as an excellent alternative to solvent-based polyurethane (PU) in diverse applications such as foams [ 1 , 2 , 3 ], coatings [ 4 , 5 , 6 , 7 , 8 ], adhesives [ 9 , 10 , 11 ], oil-water separation [ 12 , 13 , 14 ], and so on [ 15 , 16 ]. Above all, WPU contained zero or low volatile organic compounds (VOC), which are used in many industrial fields as water is used as a dispersant, which is achieved by the introduction of the internal emulsifiers and employing water as dispersant.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Biopolyol-Based Waterborne Polyurethane Modified through Complexation with Chitosan

2022

View full text Add to dashboard Cite

In this study, a series of castor oil-based anionic waterborne polyurethane (CWPU) systems, which it has been suggested may be suitable for use as green elastomers with diverse applications in films and coatings, was prepared by modified with O-carboxymethyl chitosan (CS) as not only a reinforcing filler, but a chain-extender of polyurethane prepolymer to enhance the properties of polyurethanes. Moreover, not only was the system obtained with castor oil-based polyol in the absence of a catalyst, but it was maintained with low viscosity by using acetone instead of toxic methyl ethyl ketone (MEK) during the synthesis process. The sizes, zeta potential, chemical formation, and morphology of the CWPU-CS composites had been investigated by dynamic light scattering (DLS), infrared spectroscopy (IR), and scanning electron microscopy (SEM). Moreover, the results show that the modification allows to enhance storage/loss modulus, tensile properties, thermal stability at high temperature, and biocompatibility of CWPU and CWPU/CS nanocomposites according to various contents of CS.

show abstract

Effects of Al-based alloy powders on the mechanical behavior, corrosion resistance and infrared emissivity of polyurethane composite coatings

Cited by 14 publications

References 65 publications

Evaluating Fire Performance of Glass–Polyurethane Composite for Sustainable Cladding via Numerical and Empirical Simulation

Evaluating Fire Performance of Glass–Polyurethane Composite for Sustainable Cladding via Numerical and Empirical Simulation

Experimental investigation on the mechanical properties of Al2024 doped with green synthesized quantum dots

Synthesis and Characterization of Biopolyol-Based Waterborne Polyurethane Modified through Complexation with Chitosan

Contact Info

Product

Resources

About