射流等离子体放电气氛对木塑复合材料表面性质的影响

doi:10.3969/j.issn.1673-5854.2020.05.002

Abstract

Abstract:

The surface treatment of polyethylene wood-plastic composite(PE-WPC) was carried out to improve the adhesion properties by jet plasma discharge in three different atmospheres of air, nitrogen and oxygen, respectively. Among them, the samples treated with air, nitrogen and oxygen atmosphere were labelled as PE-WPC-A, PE-WPC-N and PE-WPC-O, respectively. The effect of different atmosphere jet plasma treatment on the surface properties of PE-WPC was studied by using shear strength test, contact angle test, surface morphology observation, Fourier transform infrared spectroscopy(FT-IR) analysis and X-ray photoelectron spectroscopy(XPS) analysis. The results showed that the bonding shear strength of PE-WPC was improved obviously after the surface treatment of jet plasma discharge due to the change on the surface properties for the PE-WPC, which was in creased from 0.62 MPa to 11.32-13.79 MPa. For the bonding strength, there was slight difference between the jet plasma discharges in different atmospheres, and for the surface microstructure of the treated PE-WPC, there was evident difference between the jet plasma discharges in different atmospheres. The plasma discharge in pure nitrogen atmosphere was mainly surface chemical modification, which introduced more nitrogen-containing groups on the surface of PE-WPC. Surface oxidation etching was dominant in oxygen atmosphere jet plasma treatment, which introduced more oxygen-containing groups on the surface of PE-WPC. The jet plasma discharge in air atmosphere was combined with the above two effects.

Key words: polyethylene wood-plastic composites, surface treatment, surface property, jet plasma discharge, discharge atmosphere

CLC Number:

TQ35
TB332

Chunpo YUE,Zhiling YU,Qianhui YU,Tao WANG,Pengbo WANG,Mingwei DI. Effect of Jet Plasma Discharge in Different Atmosphere on Surface Properties of Wood-plastic Composites[J]. Biomass Chemical Engineering, 2020, 54(5): 8-14.

Figures/Tables 7

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References 17

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试样 sample	处理气氛 treated atmosphere	接触角/° contact angle	剪切强度/MPa shear strength
PE-WPC	未处理untreated	90.7	0.62
PE-WPC-A	空气air	78.3	11.32
PE-WPC-O	氧气oxygen	67.1	13.37
PE-WPC-N	氮气nitrogen	35.8	13.79

试样sample	C/%	O/%	N/%	O/C
PE-WPC	92.30	7.70	—	0.083
PE-WPC-A	74.59	24.03	1.38	0.322
PE-WPC-N	64.62	32.78	2.60	0.507
PE-WPC-O	62.37	35.33	2.30	0.566

试样 sample	C1s分峰 C1s peak points	键合形式 bonding type	结合能/eV binding energy	半高宽/eV full width at half maximum	峰面积占比/% ratio of peak area
PE-WPC	C1	C—C/C—H	285.00	1.10	72.92
	C2	C—O	286.46	1.68	14.57
	C3	C=O/O—C—O	288.32	1.21	4.81
PE-WPC-A	C1	C—C/C—H	285.00	1.27	52.98
	C2′	C—N/C—O	286.57	1.76	12.65
	C3′	C=O/HN—C=O	288.18	1.35	3.72
	C4′	O—C=O	289.33	1.27	5.24
PE-WPC-N	C1	C—C/C—H	285.00	1.39	37.38
	C2′	C—N/C—O	286.53	1.88	15.18
	C3′	C=O/HN—C=O	287.78	1.35	5.33
	C4′	O—C=O	289.41	1.15	6.73
PE-WPC-O	C1	C—C/C—H	285.00	1.35	30.05
	C2′	C—N/C—O	286.76	1.92	14.71
	C3′	C=O/HN—C=O	288.29	1.14	8.75
	C4′	O—C=O	289.35	1.39	8.68

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Effect of Jet Plasma Discharge in Different Atmosphere on Surface Properties of Wood-plastic Composites

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