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<p>To make efficient use of waste cotton straw and residual film in Xinjiang area, wood-plastic composite material was prepared by a conical double-spiral extrusion mechanism. Xylic powder of Tahe no. 2 cotton stalk was used as matrix material and maleic anhydride grafted high-density polyethylene powder as coupling agent. The mechanical properties, micro-morphology, thermophysical properties and hydrophobicity of the new material were measured by universal material testing machine, scanning electron microscope, thermal conductivity tester and contact angle tester, respectively. Furthermore, the properties of the new material were compared with those of other common wood-plastic composites (WPC). The results showed that the surface of the prepared WPC was smooth, the internal microstructure defects were fewer, and the contact angle was large (102.634°), while the surface energy was small (21.464 mN/m). Additionally, it had good bending strength (139.133&#xa0;MPa), good tensile strength (8.327&#xa0;MPa), and a low thermal conductivity (0.216 W/ (m·k)) and thermal diffusion coefficient (0.263 mm<sup>2</sup>/s). The prepared WPC has good mechanical, hydrophobicity and heat insulation properties. Results of this study have important guiding significance for the high-value utilization of cotton stalk and residual film and the reduction of agricultural residues and residual film pollution in the ecological environment in Xinjiang.</p>

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Preparation and Performance Tests of Wood-Plastic Composite Panels with Cotton Stalk Meal/Residual Film Particles

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Junhui Ran,
  • Zhipeng Song,
  • Xufeng Wang

摘要

To make efficient use of waste cotton straw and residual film in Xinjiang area, wood-plastic composite material was prepared by a conical double-spiral extrusion mechanism. Xylic powder of Tahe no. 2 cotton stalk was used as matrix material and maleic anhydride grafted high-density polyethylene powder as coupling agent. The mechanical properties, micro-morphology, thermophysical properties and hydrophobicity of the new material were measured by universal material testing machine, scanning electron microscope, thermal conductivity tester and contact angle tester, respectively. Furthermore, the properties of the new material were compared with those of other common wood-plastic composites (WPC). The results showed that the surface of the prepared WPC was smooth, the internal microstructure defects were fewer, and the contact angle was large (102.634°), while the surface energy was small (21.464 mN/m). Additionally, it had good bending strength (139.133 MPa), good tensile strength (8.327 MPa), and a low thermal conductivity (0.216 W/ (m·k)) and thermal diffusion coefficient (0.263 mm2/s). The prepared WPC has good mechanical, hydrophobicity and heat insulation properties. Results of this study have important guiding significance for the high-value utilization of cotton stalk and residual film and the reduction of agricultural residues and residual film pollution in the ecological environment in Xinjiang.