为了制备碳黑-二氧化硅-环氧树脂基复合材料弯曲角度感应器,采用K-控制仪将该材料涂层到透明薄膜上,通过研究感应器电阻率随弯曲角度的变化情况及扫描电镜分析,探讨二氧化硅对感应灵敏度的影响.结果表明,从0°弯曲角开始,随着弯曲角度的增加,感应器的电阻率先下降后增加.当感应器中二氧化硅含量低时,碳黑颗粒易于形成聚集,材料中形成的导电通路密度相对较低,容易受外加条件的影响,其对弯曲角度的感应灵敏度较高.碳黑与聚合物分子间存在着较好的物理化学作用,制备的感应器具有良好的感应重复性.
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