Analysis of a Wide Range of Commercial Exterior Wood Coatings

Gibbons, Michael; Nikafshar, Saeid; Saravi, Tina; Ohno, Katie M.; Chandra, Sanjeev; Nejad, Mojgan

doi:10.3390/coatings10111013

Cited by 9 publications

(9 citation statements)

References 30 publications

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“…Notably, significant surface protection was achieved with surface coverage as low as 0.04–0.15 g m –2 . Considering that application rates of industrially applied systems can be more than 120 g m –2 34 and taking into account the far higher oil contents of commercial wood coatings, 35 this corresponds to a reduction of solids applied by a factor of 10–1000.…”

Section: Resultsmentioning

confidence: 99%

Efficient Wood Hydrophobization Exploiting Natural Roughness Using Minimum Amounts of Surfactant-Free Plant Oil Emulsions

et al. 2021

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Wood in service requires protection from excessive moisture. Herein, we demonstrate that efficient surface hydrophobization can be provided with small amounts of biobased oils, benefitting from the hierarchical roughness inherent to wood surfaces. The developed technique involves coating spruce wood with surfactant-free emulsions based on tung oil, linseed oil, or a linseed oil-based long oil alkyd resin. The ζ-potential of the emulsions was determined by electrophoretic mobility measurements. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), atomic force microscopy (AFM), and spectrophotometry were used to study coated surfaces. XPS measurements confirmed the presence of the tung oil coatings. Tung oil emulsions were effective at concentration levels as low as 0.04 wt % oil content, roughly equivalent to 0.04 g m –2 and led to static water contact angles reaching up to >130°. SEM imaging and AFM measurements provide evidence that the micro- and nanostructures inherent to wood enhance the hydrophobization effect of the obtained coatings. A further benefit of the method lies in only minimal effects of the coating on the surface color and gloss. Thus, the mass-efficient process following several of the principles of green engineering led to improved water repellency while not affecting the visual appearance of the coated wood.

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Section: Resultsmentioning

confidence: 99%

Efficient Wood Hydrophobization Exploiting Natural Roughness Using Minimum Amounts of Surfactant-Free Plant Oil Emulsions

et al. 2021

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“…A blank experiment was done under the same conditions, and the volume of consumed HCl standard solution was recorded as V 0 . The formula for calculating the NCO value of the prepolymer is shown in formula (1).…”

Section: Testing Of the Isocyanate ( Nco) Content Of Prepolymermentioning

confidence: 99%

“…With the continuous improvement of environmental protection regulations and the promotion of low-carbon sustainable development, wood coatings worldwide are targeting the reduction of volatile organic compounds (VOCs). [1][2][3] Aqueous polyurethane dispersion (PUD) coatings, due to their environmental friendliness and excellent overall performance, are widely used in waterborne wood coatings. [4][5][6] Depending on the gloss level of the waterborne wood coatings, there are two types of coatings available in the market: gloss wood lacquer and matte wood lacquer.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of flame retardant self‐matting aqueous polyurethane dispersion

2023

J of Applied Polymer Sci

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To address the issues of insufficient film smoothness, and flammability of aqueous polyurethane dispersions (PUD) prepared by adding matting agents, two hydrophilic chain extenders, dimethylolpropionic acid (DMPA) and sodium 2‐[(2‐aminoethyl)amino] ethanesulphonate (A95), were used to regulate the particle size of the emulsion while using FRC‐6 flame retardant as a small molecule chain extender to prepare a self‐matting and flame retardant PUD. Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscope, and atomic force microscopy were used to structurally characterize the latex films. The results showed that as the R‐value (NCO/OH molar ratio) and soft segment content decreased, the prepolymer viscosity increased, making it difficult to emulsify and reducing the glossiness of the film. Moreover, an initial increase in DMPA content led to a decrease in film glossiness, followed by an increase. Increasing the molar ratio of A95 sulfonic acid salt‐based chain extender to EDA affected the glossiness of the film, with a 2:8 molar ratio of A95: ethylenediamine (EDA) resulting in a glossiness of the film of 6.5%. The addition of reactive flame retardant diethyl bis (2‐hydroxyethyl) aminomethyl phosphonate (FRC‐6) increased the branching content in the prepolymer, improved the flame retardancy of the film, and reduced its glossiness. As a result, the self‐prepared PUD had a flat film with a glossiness as low as 6.0% and a flame retardancy rating of level 4.

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“…The use of wood in the manufacture of ceilings and columns in the old buildings found in the Erbil Citadel is clear evidence that the use of wood in construction started long ago (Figure 1) [29]. At that time, people already perceived timber as a good construction material with many advantages [30,31]. In the last 10 years, timber has become a building material used just for decoration and thermal and acoustic insulation.…”

Section: Utilization Of Timber In Krimentioning

confidence: 99%

Understanding the Use of Timber in Semi-Arid Regions: Kurdistan Region of Iraq, a Case Study

2021

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The use of timber in the building industry has expanded in many countries over the last 20 years due mainly to its light weight, low adverse impact to the environment, and fair mechanical properties. Despite the development of the construction industry in the Kurdistan Region in Iraq (KRI) in recent years, timber product utilization is still very limited. Therefore, the purpose of this study was to investigate the feasibility of further utilizing timber-based products in the building industry in semi-arid regions using the KRI as a case study. A review of timber product utilization in the region was conducted first and the general properties of timber products were followed. Based on this, a survey focusing on the current situation and suitability of localized grown timber products was carried out to study the feasibility. This article concludes that the use of timber-based products in the KRI presents different barriers, with the availability in the market and technicality of construction with the material being the strongest ones. The article recommends that it is imperative to further research how to promote timber’s utilization in the KRI to be in line with sustainable development.

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Analysis of a Wide Range of Commercial Exterior Wood Coatings

Cited by 9 publications

References 30 publications

Efficient Wood Hydrophobization Exploiting Natural Roughness Using Minimum Amounts of Surfactant-Free Plant Oil Emulsions

Efficient Wood Hydrophobization Exploiting Natural Roughness Using Minimum Amounts of Surfactant-Free Plant Oil Emulsions

Synthesis and application of flame retardant self‐matting aqueous polyurethane dispersion

Understanding the Use of Timber in Semi-Arid Regions: Kurdistan Region of Iraq, a Case Study

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