The Properties of an Aluminum/UV-Curable, Infrared, Low-Emissivity Coating Modified by Nano-Silica Slurry

Yan, Xiaoxing; Chang, Yijuan; Qian, Xingyu

doi:10.3390/coatings10040382

Cited by 11 publications

(6 citation statements)

References 34 publications

(32 reference statements)

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“…(3),  n is the refraction angle corresponding to the incidence angle ,  a is the natural absorptance of the glass, mm -1 , s  is the total glass thickness, mm, n is the refractive index of the glass. All materials and technologies used in conventional smart windows [1][2][3][4][5][6][7][8] are also applicable to windows with grating filters.…”

Section: Methodsmentioning

confidence: 99%

Simulation of daylight in buildings with curved facades for rational use of solar energy

Zakirullin

Odenbakh

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Simulation of daylight conditions in buildings with curved facades was carried out to show the possibility of more efficient use of solar energy with a constant change in the azimuth of the windows orientation. To optimize daylighting, a smart window with optical filter is proposed having an angular selectivity of light transmission due to two surface gratings with alternating transmissive and chromogenic parallel strips. Unlike conventional smart windows, the entire area of which is covered with chromogenic layers, a grating filter weakens or completely blocks direct solar radiation by allowing diffused sky light and reflected light to pass through. Methods for calculating the geometric parameters of the gratings are presented and the optimal slope angles of the filter gratings for windows with different azimuths of a building with round facade and the temporal characteristics of the light transmission of these windows are calculated. The results substantiate the advisability of using smart windows with grating filters in buildings with curved facades to improve the comfort of daylighting and insolation, to protect against direct rays when passing diffuse sky light and albedo by adapting the light transmission of windows to a change in the position of the sun relative to them.

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Section: Methodsmentioning

confidence: 99%

Simulation of daylight in buildings with curved facades for rational use of solar energy

Zakirullin

Odenbakh

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…other additives [14][15][16]. Among the potential metal powders, aluminum powder exhibits the best UV reflectivity: it can reflect more than 60% of the UV radiation in sunlight.…”

Section: Experimental 21 Materials and Sample Preparationmentioning

confidence: 99%

“…Metal powders can also be added to resins to take advantage of their excellent ultraviolet reflection characteristics. These metal powder additives can be used without any other additives [14][15][16]. Among the potential metal powders, aluminum powder exhibits the best UV reflectivity: it can reflect more than 60% of the UV radiation in sunlight.…”

Section: Introductionmentioning

confidence: 99%

Effect of UV Light on the Barrier Performance of Aluminum Powder/Epoxy Coating

Zhai

et al. 2022

Polymers

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Spherical aluminum powder was added to an epoxy composite coating in order to improve its protection performance for metal materials. The strength of the coating before and after UV (Ultraviolet Light) aging, its yellowing value, and its barrier properties were tested to explore the influence of UV light on the barrier performance of aluminum powder/epoxy coating. The results show that the addition of the aluminum powder enhanced the strength of the epoxy coating and reflected environmental UV light. This improved the resistance of the coating to UV aging and prolonged its service life. The composite prepared with 6 wt.% aluminum power exhibited the highest strength values before and after aging: 64.5 MPa and 58.5 MPa, respectively. After aging, the strength loss rate of this epoxy coating was 9.3%, and its yellowing value was +1.43.

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“…Nanomaterials are the most popular modified materials in recent years [ 19 ] and have been applied to many modifiers, such as paints [ 20 , 21 ], wood, etc. It has been confirmed that nano-SiO 2 can improve the mechanical properties of wood [ 22 , 23 ] and dimensional stability [ 24 ], and some scholars have also used SiO 2 to improve the hydrophobicity and thermal insulation of wood [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of High-Temperature Heat Treatment Modification by Impregnation on Physical and Mechanical Properties of Poplar

Xue

Zhou

et al. 2022

Materials

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To expand the application range of fast-growing poplar, a modification method of poplar impregnated with nano-SiO2 and urea-formaldehyde resin was proposed in this study. Taking the mass ratio of nano-SiO2 mass to the solid content of urea-formaldehyde resin impregnation solution (W), high-temperature (H), and high-temperature time (T) as influencing factors, the effects of impregnation high-temperature heat treatment modification on the physical and mechanical properties of fast-growing poplar were explored. At the same time, the weight loss rate, oven-dry density, dry shrinkage properties, swelling properties, modulus of rupture (MOR), and modulus of elasticity (MOE) of the modified poplar were measured. The research results show that both the weight loss rate and the coefficient of variation of the oven-dry density have a high correlation with the temperature; the high-temperature immersion heat treatment can reduce the dry shrinkage and swelling of poplar, improve the dimensional stability, MOR, and MOE. W is 0–1%, H is 160 °C, and T is 2–4 h. The impregnated heat-treated wood has good MOR and MOE. Therefore, the combination of nano-SiO2 and urea-formaldehyde resin impregnation and heat treatment to modify poplar can improve some physical and mechanical properties of fast-growing poplar, expand the use of poplar, increase its added value, and realize high-value utilization.

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The Properties of an Aluminum/UV-Curable, Infrared, Low-Emissivity Coating Modified by Nano-Silica Slurry

Cited by 11 publications

References 34 publications

Simulation of daylight in buildings with curved facades for rational use of solar energy

Simulation of daylight in buildings with curved facades for rational use of solar energy

Effect of UV Light on the Barrier Performance of Aluminum Powder/Epoxy Coating

Effects of High-Temperature Heat Treatment Modification by Impregnation on Physical and Mechanical Properties of Poplar

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