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首页> 外文期刊>Journal of Polymers and the Environment >All Natural High-Density Fiber- and Particleboards from Hemp Fibers or Rice Husk Particles
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All Natural High-Density Fiber- and Particleboards from Hemp Fibers or Rice Husk Particles

机译：大麻纤维或稻壳颗粒的所有天然高密度纤维板和刨花板

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摘要

In the present study, long hemp fibers and rice husk particles have been used for producing all natural-based boards for building, automotive and in-door furniture, employing a simple and economic transformation process (namely, compression molding). In order to have the required consistence and mechanical strength, cornstarch was employed as binder. By this way, fiber- and particleboards have been prepared and characterized in terms of morphology, mechanical properties (flexural modulus and strength). The influence of different relative humidity levels on composite storage modulus and heat deflection temperatures has been investigated, as well. Long fibers turned out to be capable of sustaining approximately three times the load with respect to particles in standard conditions. Thermal, hygro- and photo stability of the above materials have been investigated under three ageing conditions: namely, (i) high temperature (thermal ageing), (ii) humidity plus high temperature (hygro-thermal ageing) and (iii) UV radiations (photo ageing). Regardless of the experimental ageing conditions adopted, fiberboards have shown good mechanical stability with a modest decrease of storage modulus ( 20%) with respect to the values before exposure.
机译：在本研究中，长麻纤维和稻壳颗粒已用于通过简单且经济的转化过程（即压缩成型）生产用于建筑，汽车和室内家具的所有天然板。为了具有所需的稠度和机械强度，玉米淀粉被用作粘合剂。通过这种方式，已经制备了纤维板和刨花板，并根据形态，机械性能（弯曲模量和强度）对其进行了表征。还研究了不同相对湿度水平对复合材料储能模量和热变形温度的影响。事实证明，在标准条件下，长纤维能够承受的载荷约为颗粒的三倍。在以下三种老化条件下研究了上述材料的热稳定性，光稳定性和光稳定性：（i）高温（热老化），（ii）湿度加高温（湿热老化）和（iii）紫外线辐射（照片老化）。不管采用何种实验老化条件，纤维板均显示出良好的机械稳定性，相对于暴露前的值，储能模量略有下降（<20％）。

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