Outdoor exposure aging performance of wheat straw/polyvinyl chloride composites in Xinjiang

QI Ruige; HE Chunxia; JIN Qiang

doi:10.13801/j.cnki.fhclxb.20191113.003

Volume 37 Issue 7

Aug. 2020

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QI Ruige, HE Chunxia, JIN Qiang. Outdoor exposure aging performance of wheat straw/polyvinyl chloride composites in Xinjiang[J]. Acta Materiae Compositae Sinica, 2020, 37(7): 1539-1546. doi: 10.13801/j.cnki.fhclxb.20191113.003

Citation:

QI Ruige, HE Chunxia, JIN Qiang. Outdoor exposure aging performance of wheat straw/polyvinyl chloride composites in Xinjiang[J]. Acta Materiae Compositae Sinica, 2020, 37(7): 1539-1546. doi: 10.13801/j.cnki.fhclxb.20191113.003

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Outdoor exposure aging performance of wheat straw/polyvinyl chloride composites in Xinjiang

doi: 10.13801/j.cnki.fhclxb.20191113.003

QI Ruige^1
,,
HE Chunxia^{1
,
,},
JIN Qiang^2
,

1.
Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
2.
College of Water Resources and Civil Engineering, Xinjiang Agricultural University, Urumqi 830001, China

Received Date: 2019-07-28
Accepted Date: 2019-10-08

Available Online: 2019-11-13

Publish Date: 2020-07-15

Abstract

Abstract

In order to investigate the effect of strong ultraviolet and dry heat environment on the aging resistance of wood-plastic composites in Xinjiang, the anti-aging agent(UV-531, 1010 and 168) was used to prepare wheat straw/polyvinyl chloride(PVC) composites by extrusion molding. The wheat straw/PVC composites were subject to outdoor exposure aging in Xinjiang for 90 days. The changes of surface functional groups, color changes, surface morphology and mechanical properties of the wheat straw/PVC composites before and after aging were tested and analyzed, and the carbonyl index, lignin index and surface roughness were calculated. The results show that three anti-aging agents can improve the aging resistance of wheat straw/PVC composites. After aging for 90 days, the functional groups on wheat straw/PVC composites surface change significantly indicating the decomposition of the wheat straw/PVC composites surface. Compared with the control group, the carbonyl index of the wheat straw/PVC composites added with UV-531 increases by 19.27%, the lignin index decreases by 4.44%, the color difference ΔE decreases by 11.12%, and the surface roughness S_a decreases by 33.38%, the flexural strength and tensile strength are increased by 5.87% and 6.44%, the surface is smoother, and the wheat straws are less exposed. The results will provide experimental data and theoretical reference for improving the anti-aging effect of wood-plastic composites, which is beneficial to prolong the service life of wood-plastic composites under dry heat conditions in Xinjiang.
- wheat straw,
- polyvinyl chloride(PVC),
- wood-plastic composites,
- Xinjiang dry heat aging,
- physical and chemical properties
Long Abstrsct
Innovation Points

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References(24)

References

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