凹凸棒石改性甘蔗渣/麦秸木质陶瓷制备与性能

    Preparation and properties of palygorskite clay modified woodceramics from bagasse/wheat straw

    • 摘要: 为资源化利用甘蔗渣和麦秸等废弃物,以甘蔗渣、麦秸以及凹凸棒石为原料,以酚醛树脂为黏结剂,采用混合后热压再烧结的工艺制备凹凸棒石改性甘蔗渣/麦秸木质陶瓷,试验制备出了各温度点下的木质陶瓷材料并对其真密度、体积密度、显气孔率、抗弯强度、电阻率等性能进行了测试,对该材料的性能、形成机理及规律进行了分析,初步揭示了原料选择、原料配比、温度等参数对制备过程及材料性能的影响。试验结果证明了通过该工艺用甘蔗渣(麦秸)和凹凸棒石制备木质陶瓷的可行性,同时也表明烧结温度对材料性能影响很大,坯体在700~800℃保护气氛下煅烧可提高传统木质陶瓷的强度而不影响木质陶瓷导电性。试验为甘蔗渣(麦秸)等植物残渣以及凹凸棒石的利用提供了新的途径。

       

      Abstract: A new technique has been developed to prepare palygorskite clay modified woodceramics using bagasse or wheat straw as raw material and phenolresin as adhesive. The composites were prepared and some properties of palygorskite clay modified woodceramics such as density, porosity, strength and resistivity were tested at the same time. A systematic analysis of the material properties, forming mechanism and regularity of composite is made. Effects of the formula of raw materials, the consistencies of adhesive and the temperature on the technique and the properties of composite were revealed. It is shown that the bagasse and wheat straw can be used to produce palygorskite clay modified woodceramics with this technique and temperature influences the properties of composite distinctly. Sample sintered between 700-800℃ can advance strength while resistivity of woodceramics don’t change. The presented work provides useful ideas for the study of the bagasse, wheat straw and palygorskite clay.

       

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