姜杆基胶黏剂的制备及其在秸秆人造板中的应用
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1.齐鲁工业大学绿色造纸与资源循环全国重点实验室;2.齐鲁工业大学绿色造纸与资源循环全国重点实验室,山东济南;3.齐鲁工业大学山东省科学院 绿色造纸与资源循环全国重点实验室,山东济南;4.华南理工大学先进造纸与纸基材料全国重点实验室;5.齐鲁师范学院化学与化工学院

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Preparation of all-ginger straw-based adhesive and its application in straw artificial boards
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1.State Key Laboratory of Green Papermaking and Resource Recycling, Qilu University of Technology;2.State Key Laboratory of Advanced Papermaking and Paper-based Materials, South China University of Technology;3.School of Chemistry and Chemical Engineering, Qilu Normal University

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    摘要:

    为实现农业秸秆的高值化利用,本研究以姜秆为原料,通过酸性条件下的愈创木酚预处理实现木质素的原位酚化改性,显著提升其酚羟基含量与化学反应活性。利用预处理后未分离出纤维素残余固体的固液混合物,经溶剂回收后得到的固体直接制备了全姜秆基胶黏剂,并与经过固液分离去除纤维素残余固体后,利用提取液中提取物所制备的姜秆木质素基胶黏剂进行性能对比。结果表明,全姜秆基胶黏剂具有较好的热稳定性,其热分解峰值温度(350~400 ℃)较姜秆木质素基胶黏剂(300~350 ℃)显著提高。进一步利用两种胶黏剂与玉米秸秆颗粒为原料制备了秸秆刨花板,并对制备过程中影响刨花板性能指标的关键因素进行了正交试验分析。研究发现,相比姜秆木质素基胶黏剂,全姜秆基胶黏剂制备的人造板表现出更优异的力学性能。在优化的工艺条件下,其静曲强度和内结合强度分别达到了21.26 MPa 和0.42 MPa,并显示出了更低的吸水厚度膨胀率(16.74%)。全姜秆基胶黏剂制备流程简化,无需固液分离步骤,实现了秸秆全组分的高效利用。

    Abstract:

    The whole ginger rod-based adhesive was prepared with ginger stalk as raw material. Firstly, through the pretreatment of guaiacol under acidic conditions, the in-situ phenolic modification of lignin was realized while the main components of ginger stem were separated, so that a large number of phenolic hydroxyl groups were grafted into the molecular structure of lignin, which greatly improved the chemical reactivity of lignin. The whole ginger rod-based adhesive was prepared without solid-liquid separation using the residual solid of pretreated cellulose and the extract of degraded lignin and hemicellulose products as raw materials, and compared with the ginger rod lignin-based adhesive prepared by the extract after solid-liquid separation to remove the cellulose solid. Studies have shown that both adhesives have shown good performance indicators. It can be seen from TG that the whole ginger rod-based adhesive exhibits better thermal stability. The whole straw-based particleboard was prepared by using the above two adhesives. The effects of the two adhesives on the properties of wood-based panels were investigated by testing the static bending strength ( MOR ), internal bonding strength ( IB ) and thickness swelling rate ( 24h TS ) of particleboard. Compared with the particleboard prepared by the ginger stalk lignin adhesive, the particleboard prepared by the whole ginger stalk-based adhesive showed higher static bending strength (21.26 MPa) and internal bonding strength ( 0.42 MPa > 0.40 MPa ), and lower water absorption expansion rate (16.74 %). The whole ginger rod-based adhesive prepared in this study has a simple process and realizes the full component utilization of straw.

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徐卿瑕,张永超,傅英娟,宋涛,秦梦华.姜杆基胶黏剂的制备及其在秸秆人造板中的应用[J].精细化工,2026,43(4):

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  • 收稿日期:2025-03-17
  • 最后修改日期:2025-04-15
  • 录用日期:2025-04-10
  • 在线发布日期: 2026-04-07
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