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首页> 外文期刊>Journal of Applied Polymer Science >Optimization of thermopressing conditions for the production of binderless boards from a coriander twin-screw extrusion cake
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Optimization of thermopressing conditions for the production of binderless boards from a coriander twin-screw extrusion cake

机译：从香菜双螺杆挤出饼中生产粘合剂板的热压条件的优化

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摘要

A deoiled press cake resulting from twin-screw extrusion of coriander fruits was used as a raw material for the production of self-bonded boards. The operating parameters for thermopressing were varied and include the applied pressure (19.6-39.2 MPa), molding time (60-300 s), and molding temperature (155-205 degrees C). The optimized process conditions (21.6 MPa, 300 s, 205 degrees C) resulted in a board with a density of 1323 kg/m(3), a flexural strength of 23 MPa, a modulus of elasticity of 4.4 GPa, and a thickness swelling of 31%. The thickness swelling was effectively reduced to 20% through the application of a heat treatment at 200 degrees C after thermopressing. A variation of the moisture content of the press cake between 3 and 8% showed that increased moisture contents do not lead to improved mechanical properties of the resulting board and further induce internal fracturing of the board during thermopressing. The manufactured binderless boards may act as environmentally friendly alternatives to commercial wood-based boards such as oriented strand board and particleboard. (C) 2016 Wiley Periodicals, Inc.
机译：从芫荽水果的双螺杆挤出所得甲脱油的压滤饼用作原料用于生产自粘合板。对于thermopressing操作参数是变化的，并包括所施加的压力（兆帕19.6-39.2），模制时间（60-300或多个），和成型温度（155-205℃）。优化的工艺条件下（21.6兆帕，300秒，205℃）产生了板与1323千克/米（3）的密度，23兆帕，4.4吉帕弹性模量的挠曲强度和厚度溶胀的31％。厚度肿胀有效地通过热处理的应用，在200℃下后thermopressing减少到20％。压滤饼的3至8％的水分含量的变型表明，增加的水分含量不导致所得板的改进的机械性能，并进一步thermopressing期间诱导板的内部破裂。所制作的粘结剂板可作为环保替代品的商业木质板，如定向刨花板和刨花板。 （c）2016 Wiley期刊，Inc。

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