复材加热组件一体成型制备及其热/力学性能研究

Integrated Molding and Thermal/Mechanical Properties of Composite Heating Components

针对玻纤/环氧复合材料,采用平板硫化机热压成型制备工艺,将预封装的石墨烯加热元件内嵌于复材夹层中,从而制备得到复材加热组件。实验证明,该制备方法对石墨烯复合材料的阻值及发热影响较小,保证了石墨烯加热元件的防/除冰效率。基于复材加热组件,进行了热/力学性能实验和低温除冰实验。实验结果表明,复材加热组件的温升速率随热流密度的增加而增大,并且铺层位置对复材加热组件的温升具有较大影响。在冷环境除冰实验中,环境温度为-20℃,热流密度为0.3 W/cm^(2)时,相较于传统电加热组件,复材加热组件的除冰时间大幅减小,能耗减少约30%,为进一步制备复材加热机翼奠定了基础。

For glass fiber/epoxy composite materials,the pre-encapsulated graphene heating element is embedded in the interlayer of composite material by using the hot-pressing preparation process of flat plate vulcanizer,so as to prepare the composite heating component.Experiments show that the preparation method has little effect on the resistance and heating performance of graphene materials,thus ensuring the anti-icing/de-icing efficiency of graphene heating elements.Then,based on the composite heating components,thermal/mechanical experiments and de-icing performance experiments are carried out.The test results show that the temperature growth rate of composite heating components increases with the increase of heat flux,and the position of layer has a great influence on the temperature rise of composite heating components.In the cold environment de-icing experiment,when the ambient temperature is-20℃and the heat flow density is 0.3 W/cm^(2),compared with the traditional electric heating component,the de-icing time of the composite heating component is greatly reduced,and the energy consumption is reduced by about 30%,which lays a foundation for the further preparation of the composite heating wing.