以稻壳粉、秸秆粉为主要原料,添加少量玻璃纤维和石膏,以工业水玻璃为粘结剂,在160℃,1.2MPa压力下热压制备了不同配比的植物纤维夹芯,并将其与镁合金板复合制得植物纤维镁合金夹层板,并对其力学性能进行了研究。结果表明：在120℃,1.2MPa条件下可成功制备出轻质、高强度的植物纤维镁合金夹层板;夹层板的压缩性能主要取决于夹芯基料和固化工艺,添加剂的影响较小;添加适量玻璃纤维和石膏可有效提高夹层板的抗弯强度,玻璃纤维和石膏的质量分数分别为8%,5%时制得的夹层板弯曲性能最优。
Under the conditions of 160 ℃ and pressure of 1.2 MPa,the plant fibers core with different ratios were prepared with little fiberglass and plaster using rice shell powders and straw powders as raw materials,industrial water glass as binder.Then the plant fiber magnesium alloy sandwich panel was prepared through combining the core with the magnesium alloy plate,and the mechanical properties were studied.The results show that plant fiber magnesium alloy sandwich panel with light mass and high strength could be successful prepared at 120 ℃ and 1.2 MPa.The compression properties of the panel mainly depended on the core base material and solidification process,the additive had small effect.Adding proper fiberglass and plaster could increase the bending strength efficiently.The best bending properties could be obtained when the adding content of fiberglass and plaster respectively was 8wt% and 5wt%.
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