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Volume 31 Issue 9
Sep.  2024
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文章导航 >  矿物冶金与材料学报（英文）  > 2024  >  31(9): 2110-2120
Ling Zhao, Kai Zhao, Zhenwei Shen, Yifan Wang, Xiaojie Xia, Hao Zhang,  and Hongming Long, Novel wood–plastic composite fabricated via modified steel slag: Preparation, mechanical and flammability properties, Int. J. Miner. Metall. Mater., 31(2024), No. 9, pp. 2110-2120. https://doi.org/10.1007/s12613-024-2829-4
Cite this article as:
Ling Zhao, Kai Zhao, Zhenwei Shen, Yifan Wang, Xiaojie Xia, Hao Zhang,  and Hongming Long, Novel wood–plastic composite fabricated via modified steel slag: Preparation, mechanical and flammability properties, Int. J. Miner. Metall. Mater., 31(2024), No. 9, pp. 2110-2120. https://doi.org/10.1007/s12613-024-2829-4
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研究论文

基于改性钢渣为原料制备的新型木塑复合材料及其力学与燃烧性能研究

  • 1)

    安徽工业大学冶金工程学院, 马鞍山 243032, 中国

  • 2)

    安徽工业大学建筑工程学院, 马鞍山 243032, 中国

  • 3)

    安徽工业大学材料科学与工程学院, 马鞍山 243032, 中国

  • 4)

    冶金减排与资源综合利用教育部重点实验室(安徽工业大学), 马鞍山 243002, 中国


  • 通讯作者:

    张浩    E-mail: fengxu19821018@163.com

    龙红明    E-mail: yaflhm@126.com

文章亮点

  • (1) 采用磷酸协同硅烷偶联复合改性钢渣并成功制备改性钢渣。
  • (2) 加入改性钢渣的木塑复合材料阻燃性能与力学性能得到提高。
  • (3) 总结并提出了改性钢渣在木塑复材料中的阻燃与补强作用机理。
  • 针对钢渣利用低的缺点，本文提出一种新颖的钢渣利用率的方法。即采用磷酸协同硅烷偶联剂（KH550）对钢渣进行改性并制备改性钢渣（MSS）。并通过熔融共混与热压相结合的工艺，用MSS替代部分滑石粉制备改性钢渣/木塑复合材料（MSS/WPCs）。测试木塑复合材料的力学性能，燃烧性能，热量释放、烟气释放以及热稳定性。结果表明，改性后钢渣能与木粉、热塑性塑料之间发生接枝反应，提高木塑复合材料力学性能，尤其是MSS替滑石粉比例为1：1时（MSS/WPC#50，MSS含量为16 wt%），MSS/WPC#50的力学最优，与纯滑石粉/木塑复合材料相比，其拉伸强度、弯曲强度与冲击强分别提高18.5%，12.8%和18.0%。同时，MSS/WPC50#的氧指数最高为22.5%，垂直燃烧等级别也最高为V-1级，水平燃烧速度最低为44.2 mm/min。此外，MSS/WPC#50的热稳定性最好且热量释放与烟气的释放均为最低，这是因为MSS能形成稳定且致密的炭层阻止热量的传递与烟气扩散。然而，过少的MSS产生的接枝作用较弱，过量的改性钢渣加入会导致团聚，影响力学性能与阻燃性。上述研究成果表明，将优异的改性钢渣/木塑复合材料可以被用来制备室内与室外的装饰板材，间接地实现钢渣的高附加值应用。
    • Research Article

    Novel wood–plastic composite fabricated via modified steel slag: Preparation, mechanical and flammability properties

    + Author Affiliations
      Abstract
    • A novel method was developed to enhance the utilization rate of steel slag (SS). Through treatment of SS with phosphoric acid and aminopropyl triethoxysilane (KH550), we obtained modified SS (MSS), which was used to prepare MSS/wood–plastic composites (MSS/WPCs) by replacing talcum powder (TP). The composites were fabricated through melting blending and hot pressing. Their mechanical and combustion properties, which comprise heat release, smoke release, and thermal stability, were systematically investigated. MSS can improve the mechanical strength of the composites through grafting reactions between wood powder and thermoplastics. Notably, MSS/WPC#50 (16wt% MSS) with an MSS-to-TP mass ratio of 1:1 exhibited optimal comprehensive performance. Compared with those of WPC#0 without MSS, the tensile, flexural, and impact strengths of MSS/WPC#50 were increased by 18.5%, 12.8%, and 18.0%, respectively. Moreover, the MSS/WPC#50 sample achieved the highest limited oxygen index of 22.5%, the highest vertical burning rating at the V-1 level, and the lowest horizontal burning rate at 44.2 mm/min. The formation of a dense and stable char layer led to improved thermal stability and a considerable reduction in heat and smoke releases of MSS/WPC#50. However, the partial replacement of TP with MSS slightly compromised the mechanical and flame-retardant properties, possibly due to the weak grafting caused by SS powder agglomeration. These findings suggest the suitability of MSS/WPCs for high-value-added applications as decorative panels indoors or outdoors.
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