Coating Performance on Exterior Oil-Heat Treated Wood
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Moisture Content
3.2. Color Change
3.3. Gloss Change
3.4. Appearance Ranking
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Coating ID | Resin | Base | Density | % Solid Content | Viscosity (mPa.s) | Number of Coats and Application | |
---|---|---|---|---|---|---|---|
1-Al-S | Alkyd | Solvent | 0.87 | 40 ± 2 | 73 ± 1 | 1 | Only one coat |
2-Al-S | Alkyd | Solvent | 0.96 | 63 ± 2 | 1004 ± 10 | 2 | After 16 h |
3-Al-W | Alkyd | Water | 1.01 | 30 ± 2 | 882 ± 3 | 2 | After 20 min |
4-Ac-W | Acrylic | Water | 1.02 | 10 ± 0.0 | 21 ± 4 | 2 | Wet on wet |
5-Al-W | Alkyd | Water | 1.01 | 10 ± 0.1 | 213 ± 1 | 2 | Before 2 h |
6-Al-Ac-W | Alkyd- Acrylic | Water | 1.04 | 24 ± 0.1 | 24 ± 1 | 2 | After 24 h |
7-Al-Ac-W | Alkyd-Acrylic | Water | 1.03 | 24 ± 2 | 23 ± 1 | 2 | After 24 h |
8-Ac-W | Acrylic | Water | 1.05 | 25 ± 2 | 352 ± 4 | 2 | After 24 h |
9-Ac-W | Acrylic | Water | 1.03 | 23 ± 1 | 59 ± 2 | 2 | After 24 h |
Paint | Untreated Spruce | Heat−Treated Spruce | ||||||
---|---|---|---|---|---|---|---|---|
Color | ∆L | ∆a | ∆b | ∆E | ∆L | ∆a | ∆b | ∆E |
1−Al−S | −37 ± 2 | −32 ± 3 | −41 ± 3 | 64 ± 1 | 6 ± 2 | −35 ± 1 | −8 ± 2 | 36 ± 1 |
2−Al−S | −29 ± 4 | −31 ± 1 | −43 ± 6 | 61 ± 5 | −3 ± 6 | −27 ± 1 | −4 ± 2 | 28 ± 2 |
3−Al−W | −44 ± 3 | −33 ± 3 | −46 ± 3 | 72 ± 2 | −3 ± 3 | −34 ± 1 | −12 ± 1 | 36 ± 1 |
4−Ac−W | −39 ± 3 | −32 ± 4 | −46 ± 2 | 68 ± 1 | −12 ± 2 | −31 ± 1 | −17 ± 5 | 38 ± 4 |
5−Al−W | −49 ± 2 | −30 ± 1 | −38 ± 2 | 69 ± 2 | −7 ± 3 | −35 ± 5 | −37 ± 4 | 52 ± 6 |
6−Al−Ac−W | −28 ± 5 | −33 ± 1 | −43 ± 2 | 61 ± 3 | −9 ± 1 | −24 ± 1 | −10 ± 1 | 28 ± 1 |
7−Al−Ac−W | −31 ± 3 | −35 ± 1 | −42 ± 3 | 62 ± 3 | −9 ± 2 | −24 ± 2 | −11 ± 4 | 28 ± 4 |
8−Ac−W | −30 ± 1 | −31 ± 1 | −33 ± 1 | 54 ± 1 | −5 ± 2 | −26 ± 2 | −6 ± 3 | 28 ± 2 |
9−Ac−W | −29 ± 2 | −29 ± 1 | −32 ± 1 | 52 ± 1 | −6 ± 2 | −27 ± 2 | −5 ± 3 | 28 ± 3 |
Uncoated | −52 ± 1 | −29 ± 1 | −30 ± 1 | 67 ± 1 | −22 ± 3 | −34 ± 1 | −39 ± 1 | 57 ± 1 |
Tukey Grouping | Mean | N | Coating | |
---|---|---|---|---|
– | A | 63.8 | 16 | 5 |
– | A | 63.4 | 16 | Uncoated |
B | A | 57.1 | 16 | 3 |
B | – | 55.5 | 16 | 4 |
B | C | 51.6 | 16 | 1 |
D | C | 47.0 | 16 | 7 |
D | C | 46.8 | 16 | 2 |
D | C | 45.5 | 16 | 6 |
D | – | 42.3 | 16 | 9 |
D | – | 42.9 | 16 | 8 |
Treatment | Coatings | Southern Pine | Spruce | ||||||
---|---|---|---|---|---|---|---|---|---|
Checking | Mildew | Erosion | General | Checking | Mildew | Erosion | General | ||
Untreated | 1-Al-S | 4 ± 1 | 4 ± 1 | 3 ± 1 | 3 ± 1 | 7 ± 1 | 7 ± 2 | 2 ± 0 | 3 ± 1 |
2-Al-S | 7 ± 2 | 6 ± 1 | 6 ± 1 | 6 ± 2 | 9 ± 1 | 9 ± 1 | 9 ± 1 | 8 ± 2 | |
3-Al-W | 5 ± 1 | 3 ± 1 | 2 ± 1 | 2 ± 0 | 7 ± 3 | 4 ± 0 | 3 ± 1 | 2 ± 0 | |
4-Ac-W | 4 ± 0 | 7 ± 4 | 0 ± 0 | 1 ± 2 | 5 ± 3 | 10 ± 0 | 0 ± 0 | 1 ± 1 | |
5-Al-W | 4 ± 1 | 5 ± 5 | 0 ± 0 | 1 ± 1 | 7 ± 4 | 10 ± 0 | 1 ± 1 | 2 ± 2 | |
6-Al-Ac-W | 8 ± 1 | 7 ± 3 | 6 ± 2 | 6 ± 2 | 6 ± 4 | 7 ± 1 | 4 ± 0 | 3 ± 1 | |
7-Al-Ac-W | 6 ± 2 | 7 ± 1 | 6 ± 1 | 6 ± 0 | 7 ± 3 | 8 ± 2 | 6 ± 0 | 5 ± 2 | |
8-Ac-W | 6 ± 2 | 6 ± 2 | 4 ± 1 | 5 ± 1 | 7 ± 2 | 9 ± 1 | 7 ± 1 | 5 ± 1 | |
9-Ac-W | 7 ± 1 | 6 ± 1 | 6 ± 1 | 6 ± 1 | 9 ± 1 | 9 ± 1 | 7 ± 1 | 6 ± 2 | |
Uncoated | 5 ± 2 | 8 ± 2 | 0 ± 0 | 5 ± 1 | 7 ± 3 | 10 ± 0 | 0 ± 0 | 5 ± 2 | |
Heat-treated | 1-Al-S | 7 ± 1 | 5 ± 2 | 4 ± 1 | 4 ± 1 | 9 ± 1 | 8 ± 0 | 2 ± 0 | 2 ± 0 |
2-Al-S | 7 ± 1 | 9 ± 1 | 7 ± 1 | 7 ± 1 | 9 ± 1 | 10 ± 0 | 10 ± 0 | 8 ± 0 | |
3-Al-W | 5 ± 11 | 2 ± 1 | 1 ± 1 | 1 ± 1 | 7 ± 4 | 5 ± 1 | 5 ± 1 | 2 ± 0 | |
4-Ac-W | 5 ± 1 | 9 ± 1 | 0 ± 0 | 1 ± 1 | 6 ± 3 | 0 ± 0 | 0 ± 0 | 2 ± 0 | |
5-Al-W | 6 ± 1 | 9 ± 1 | 0 ± 0 | 1 ± 1 | 7 ± 4 | 0 ± 0 | 0 ± 0 | 2 ± 0 | |
6-Al-Ac-W | 7 ± 1 | 8 ± 1 | 6 ± 1 | 6 ± 1 | 9 ± 1 | 9 ± 1 | 8 ± 0 | 7 ± 1 | |
7-Al-Ac-W | 7 ± 1 | 8 ± 0 | 6 ± 0 | 6 ± 1 | 10 ± 0 | 8 ± 0 | 7 ± 1 | 7 ± 1 | |
8-Ac-W | 7 ± 2 | 8 ± 1 | 6 ± 1 | 6 ± 1 | 7 ± 4 | 7 ± 1 | 8 ± 0 | 6 ± 0 | |
9-Ac-W | 7 ± 2 | 8 ± 1 | 7 ± 1 | 6 ± 2 | 8 ± 3 | 8 ± 0 | 8 ± 0 | 7 ± 1 | |
Uncoated | 4 ± 1 | 9 ± 1 | 0 ± 0 | 5 ± 1 | 7 ± 4 | 0 ± 0 | 0 ± 0 | 2 ± 0 |
Tukey Grouping | Mean | N | Coating | Base |
---|---|---|---|---|
A | 7.5 | 15 | 2 | Solvent |
7.1 | 15 | 9 | Water | |
A | 6.7 | 15 | 7 | Water |
A | 6.6 | 15 | 6 | Water |
A | 6.4 | 15 | 8 | Water |
B | 4.4 | 15 | 1 | Solvent |
B | 4.4 | 15 | Uncoated | --- |
B | 3.4 | 15 | 5 | Water |
B | 3.3 | 15 | 4 | Water |
3.1 | 15 | 3 | Water |
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Nejad, M.; Dadbin, M.; Cooper, P. Coating Performance on Exterior Oil-Heat Treated Wood. Coatings 2019, 9, 225. https://doi.org/10.3390/coatings9040225
Nejad M, Dadbin M, Cooper P. Coating Performance on Exterior Oil-Heat Treated Wood. Coatings. 2019; 9(4):225. https://doi.org/10.3390/coatings9040225
Chicago/Turabian StyleNejad, Mojgan, Mahdi Dadbin, and Paul Cooper. 2019. "Coating Performance on Exterior Oil-Heat Treated Wood" Coatings 9, no. 4: 225. https://doi.org/10.3390/coatings9040225