工艺参数对生物油酚醛树脂胶合板甲醛和TVOC含量的影响

doi:10.3969/j.issn.1673-5854.2021.02.006

Abstract

Abstract:

To explore the effects of 6 factors (bio-oil replacement ratio, molar ratio of formaldehyde and phenol (n_F/n_P), hot press temperature, pressure and time, and amount of adhesives) of the resin preparation and hot press processes on the content of formaldehyde and total volatile organic compounds (TVOC) in the bio-oil phenol formaldehyde plywood (BPFP) panels, an L₂₅ (5⁶) orthogonal experiment design was executed. Head space solid-phase micro-extractions (HS-SPME) combined with gas chromatography/mass spectrometry (GC/MS) was employed to detect the content of free formaldehyde and TVOC in the BPFP panels. The results showed that under the conditions of the bio-oil replacement ratio of 60%, n_F/n_P of 1.6, hot press temperature of 190 ℃, hot press duration of 4 min, hot press pressure of 1.2 MPa, and amount of adhesives applied of 200 g/cm², formaldehyde emissions was the lowest. Hot press temperature and pressure had a significant effect on the formaldehyde content, whereas the replacement ratio of fast pyrolysis bio-oil to phenol and the amount of wood adhesives applied had a minor effect. Under the conditions of bio-oil replacement ratio of 60%, n_F/n_P of 2.2, hot press temperature of 190 ℃, hot press duration of 5.5 min, hot press pressure of 1.4 MPa, and amount of adhesives applied of 210 g/cm², the content of TVOC in the plywood was the lowest.

Key words: bio-oil phenolic resin, formaldehyde, total volatile organic compound, solid-phase micro-extraction, safety

CLC Number:

TQ35

Ping HUANG, Fan YANG, Liangliang JIA, Jian LI, Dongbing LI. Effect of Process Parameters on Formaldehyde and TVOC Content in Plywood Bonded with Bio-oil Phenol Formaldehyde Resins[J]. Biomass Chemical Engineering, 2021, 55(2): 38-44.

Figures/Tables 5

Fig.1

Table 1

The orthogonal experiment design and result"

试验号 trial number	A 生物油替代率/% bio-oil replacement ratio	B 醛酚比(n_F/n_P) molar ratio between formaldehyde and phenol	C 热压温度/℃ hot press temperature	D 热压时间/min hot press time	E 热压压力/ MPa hot press pressure	F 涂胶量/ (g·cm^-2) amount of adhesives	相对峰面积peak area (×10⁹)
试验号 trial number	A 生物油替代率/% bio-oil replacement ratio	B 醛酚比(n_F/n_P) molar ratio between formaldehyde and phenol	C 热压温度/℃ hot press temperature	D 热压时间/min hot press time	E 热压压力/ MPa hot press pressure	F 涂胶量/ (g·cm^-2) amount of adhesives	甲醛 formaldehyde	TVOC	苯酚 phenol
1	20	1.4	150	3.5	0.8	180	0.23	9.65	6.42
2	20	1.6	160	4.0	1.0	190	0.08	6.91	4.82
3	20	1.8	170	4.5	1.2	200	0.14	5.88	2.67
4	20	2.0	180	5.0	1.4	210	0.24	3.80	0.81
5	20	2.2	190	5.5	1.6	220	0.25	3.80	0.43
6	30	1.4	160	4.5	1.4	220	0.14	6.97	4.07
7	30	1.6	170	5.0	1.6	180	0.19	5.53	2.61
8	30	1.8	180	5.5	0.8	190	0.15	4.37	1.26
9	30	2.0	190	3.5	1.0	200	0.18	5.29	1.45
10	30	2.2	150	4.0	1.2	210	0.20	3.73	0.87
11	40	1.4	170	5.5	1.0	210	0.13	4.93	2.00
12	40	1.6	180	3.5	1.2	220	0.16	6.13	1.40
13	40	1.8	190	4.0	1.4	180	0.13	3.17	0.16
14	40	2.0	150	4.5	1.6	190	0.38	4.91	0.17
15	40	2.2	160	5.0	0.8	200	0.20	4.49	0.10
16	50	1.4	180	4.0	1.6	200	0.18	4.43	1.17
17	50	1.6	190	4.5	0.8	210	0.10	4.11	0.38
18	50	1.8	150	5.0	1.0	220	0.35	5.51	1.05
19	50	2.0	160	5.5	1.2	180	0.16	3.66	0.42
20	50	2.2	170	3.5	1.4	190	0.21	3.44	0.23
21	60	1.4	190	5.0	1.2	190	0.09	3.64	0.14
22	60	1.6	150	5.5	1.4	200	0.16	4.27	0.54
23	60	1.8	160	3.5	1.6	210	0.24	3.96	0.41
24	60	2.0	170	4.0	0.8	220	0.14	4.03	0.09
25	60	2.2	180	4.5	1.0	180	0.17	4.17	0.08
k₁	0.19	0.15	0.26	0.20	0.16	0.18
k₂	0.17	0.14	0.16	0.15	0.18	0.18
k₃	0.20	0.20	0.16	0.19	0.15	0.17
k₄	0.20	0.22	0.18	0.21	0.18	0.18
k₅	0.16	0.21	0.15	0.17	0.25	0.21
R	0.04	0.08	0.11	0.06	0.10	0.04
k′₁	6.01	5.92	5.61	5.69	5.33	5.24
k′₂	5.18	5.39	5.20	4.45	5.36	4.65
k′₃	4.73	4.58	4.76	5.21	4.61	4.87
k′₄	4.23	4.34	4.58	4.59	4.33	4.11
k′₅	4.01	3.93	4.00	4.21	4.53	5.29
R′	2.00	1.99	1.61	1.48	1.03	1.18
k″₁	3.03	2.76	1.81	1.98	1.65	1.94
k″₂	2.05	1.95	1.96	1.42	1.88	1.32
k″₃	0.77	1.11	1.52	1.47	1.10	1.19
k″₄	0.65	0.59	0.94	0.94	1.16	0.89
k″₅	0.25	0.34	0.51	0.93	0.96	1.41
R″	2.78	2.42	1.45	1.05	0.92	1.05

Table 1

Table 2

Table 3

Table 4

References 17

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因素 factor	平方和(×10¹⁵) sum of square	自由度 degrees of freedom	F值 F value	F临界值 F threshold	显著性(P) saliency
生物油替代率bio-oil replacement ratio	6.51	4	1.45	6.39
n_F/n_P	25.5	4	5.70	6.39
热压温度hot press temperature	41.6	4	9.31	6.39	*
热压时间hot press time	13.7	4	3.07	6.39
热压压力hot press pressure	29.5	4	6.59	6.39	*
涂胶量amount of adhesives	4.47	4	1.00	6.39

因素 factor	平方和(×10¹⁵) sum of square	自由度 degrees of freedom	F值 F value	F临界值 F threshold	显著性(P) saliency
生物油替代率bio-oil replacement ratio	12.7	4	2.76	6.39
n_F/n_P	13.2	4	2.86	6.39
热压温度hot press temperature	7.5	4	1.64	6.39
热压时间hot press time	7.4	4	1.61	6.39
热压压力hot press pressure	4.6	4	1.00	6.39
涂胶量amount of adhesives	4.7	4	1.01	6.39

因素factor	平方和(×10¹⁵) sum of square	自由度 degrees of freedom	F值 F value	F临界值 F threshold	显著性(P) saliency
生物油替代率bio-oil replacement ratio	26.7	4	9.11	6.39	*
n_F/n_P	20.0	4	6.80	6.39	*
热压温度hot press temperature	7.4	4	2.53	6.39
热压时间hot press time	3.8	4	1.30	6.39
热压压力hot press pressure	3.1	4	1.06	6.39
涂胶量amount of adhesives	2.9	4	1.00	6.39

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Effect of Process Parameters on Formaldehyde and TVOC Content in Plywood Bonded with Bio-oil Phenol Formaldehyde Resins

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