Increasing the physical and combustion performance of Oriental beech by impregnating borates and coating liquid glass

Gunbekler, Yilmaz Anil; Toker, Hilmi; Altay, Caglar; Kucuktuvek, Mustafa; Baysal, Ergun

doi:10.1590/0104-1428.20210041

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ORIGINAL ARTICLE • Polímeros 31 (2) • 2021 • https://doi.org/10.1590/0104-1428.20210041 copy

Increasing the physical and combustion performance of Oriental beech by impregnating borates and coating liquid glass

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

This study was designed to investigate physical properties such as color changes after weathering and water absorption (WA) levels, and combustion performance of borates-impregnated and LG-coated Oriental beech wood. Results showed that borates impregnated and LG-coated Oriental beech wood showed positive lightness stability after weathering. The best color stabilization was obtained with LG-coated Oriental beech. Except for the 1 h WA period, LG did not show a water repellent effect after the water absorption test. Borates impregnation before LG-coating caused to decrease in weight loss of Oriental beech after the combustion test. Moreover, the lowest weight losses were obtained in borate impregnated Oriental beech wood.

Keywords:
physical properties; combustion properties; borates; liquid glass; Oriental beech wood

Months (2020)	September	October	November
Average temperature (°C)	24.93	18.12	10.93
Highest temperature (°C)	33.30	26.53	18.90
Lowest temperature (°C)	18.43	11.33	5.11
Humidity (%)	49.56	63.17	63.21
Average wind speed (m/sn)	0.97	0.54	0.92
Total rainfall per month (mm=kg. m^-2)	3.50	5.93	6.20

Chemicals	Retention (Kg/m³)	Color values before natural weathering			Color values after natural weathering			Total color changes
Chemicals	Retention (Kg/m³)	L	a	b	𝜟L*	𝜟a*	𝜟b*	𝜟E*	Homogeneity Groups
Control	-	72.30	9.28	20.19	-15.36	-1.78	5.09	16.27	A
LG	-	61.46	8.81	22.01	-2.22	-0.40	4.56	5.08	FG
BX	16.32	62.49	10.33	19.52	-2.98	-1.26	6.23	6.36	FG
BX+LG	17.06	57.95	8.77	15.47	8.13	-0.64	9.92	12.84	BC
BA	19.85	66.56	11.08	21.31	-3.73	-1.62	4.77	6.26	FG
BA+LG	20.16	60.71	8.08	20.50	3.77	-0.95	2.56	8.15	G
DOT	18.96	67.85	9.43	19.91	-7.34	-0.30	5.83	9.37	DE
DOT+LG	18.61	54.46	6.41	15.49	6.36	-1.43	8.21	10.48	CD
APB	16.53	63.97	9.66	18.97	-6.13	-0.40	7.77	7.80	EF
APB+LG	15.88	54.55	7.67	15.30	9.81	-0.19	8.86	13.22	B

Chemicals	Water absorption rates (%)
Chemicals	After 1 hour	H.G.	After 8 hours	H.G.	After 24 hours	H.G.	After 48 hours	H.G.	After 72 hours	H.G.	After 96 hours	H.G.	After 120 hours	H.G.	After 144 hours	H.G.	After 168 hours	H.G.
Control	51.82	AB	72.72	A	74.20	A	83.06	A	88.49	A	91.34	A	95.43	A	99.64	A	103.05	A
LG	14.55	D	49.48	BC	52.24	BC	63.36	B	70.16	B	74.70	B	79.82	C	82.53	BC	88.51	ABCD
BX	48.76	B	69.75	A	73.30	A	84.64	A	88.08	A	88.66	AB	93.26	AB	95.71	AB	96.75	ABC
BX+LG	15.84	D	44.86	BC	49.34	BC	61.72	B	68.96	B	69.18	B	75.13	BC	81.55	BC	86.13	ABCD
BA	30.53	C	40.88	C	58.75	B	68.12	B	71.88	B	73.72	B	75.97	C	77.12	C	81.47	CD
BA+LG	15.01	D	38.20	AB	46.54	C	55.76	B	61.57	B	65.94	B	70.21	C	75.85	C	79.46	D
APB	63.05	A	78.94	A	77.53	A	87.31	A	93.05	A	94.79	A	98.18	A	100.48	A	103.57	A
APB+LG	16.07	D	43.28	C	49.46	BC	60.87	B	66.55	B	71.15	B	73.68	C	78.61	C	84.63	BCD
DOT	53.06	AB	76.47	A	76.50	A	87.58	A	92.00	A	93.58	A	96.40	A	97.93	AB	99.42	AB
DOT+LG	16.02	D	42.50	C	47.10	C	60.41	B	67.55	B	72.48	B	78.27	C	82.10	C	85.42	ABCD

Chemicals	Weight loss (%)
Chemicals	Mean	Standard deviation	Homogeneity group
Control	83.70	1.03	A
LG	81.40	1.79	AB
BX	80.02	1.03	B
BX+LG	80.93	3.46	AB
BA	71.64	2.05	CD
BA+LG	72.78	1.31	C
DOT	69.10	1.37	D
DOT+LG	69.27	3.74	CD
APB	69.57	3.55	CD
APB+LG	71.81	2.52	CD

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[1] * mkucuktuvek@gazi.edu.tr