本文以氢氧化钠(NaOH)溶液处理苎麻布,采用模压工艺制备不饱和聚酯(UP)树脂/苎麻布复合材料,研究碱液处理对苎麻布、复合材料力学性能及表面、界面形貌的影响.实验结果表明,经适当碱液处理后,苎麻布的拉伸断裂强力及拉伸断裂伸长率均增加,苎麻布的表面形貌更加光滑蓬松,复合材料的拉伸强度及弯曲强度均下降,但冲击强度及弯曲模量得到提高.30wt%NaOH溶液处理可使复合材料的弯曲模量达到最大值,166.38MPa,比未经碱液处理所制得复合材料的弯曲弹性模量提高了110%.碱处理后,复合材料的冲击断面上纤维被树脂紧紧包裹,纤维裸露拔出现象远不如未处理复合材料那样明显.
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