空间限域强制组装法制备SCF/PDMS导电复合材料的电导率预测模型的建立

Establishment of Conductivity Prediction Model of SCF/PDMS Conductive Composite Prepared by Space⁃limited Forced Assembly Method

采用空间限域强制组装(SCFNA)法,制备SCF/PDMS导电复合材料,设计正交实验,研究了研究了碳纤维含量、SCF和PDMS的混合转速和混合时间对导电复合材料电阻的影响,并通过计算得到三因素对导电复合材料电导率的影响。结果表明,在SCF/PDMS制品厚度为0.2 mm不变的情况下,三因素对SCF/PDMS导电复合材料制品电阻的影响从大到小依次为:碳纤维含量、混合转速、混合时间,得到了SCF/PDMS导电复合材料制品的电阻响应值与碳纤维含量、混合转速以及混合时间三因素之间的多元线性回归方程,建立了电导率预测模型,并能够通过调节碳纤维含量、混合转速以及混合时间等变量,而对SCF/PDMS导电复合材料制品的电导率进行调控。

The SCF/PDMS conductive composite were prepared by the space⁃limited forced assembly method,and orthogonal experiments were designed to study the effects of carbon fiber content,mixing speed and mixing time of SCF and PDMS on the resistance of conductive composite were studied,and the effects of three factors on the conductivity of conductive composite were obtained by calculation.The results showed that under the condition that the thickness of the SCF/PDMS product was 0.2 mm,the influence of the three factors on the resistance of the SCF/PDMS conductive composite products from large to small was:carbon fiber content,mixing speed,mixing time.A multiple linear regression equation between the resistance response value of the SCF/PDMS conductive composite products and the three factors of carbon fiber content,mixing speed and mixing time was obtained,and a conductivity prediction model was established that could regulate the conductivity of SCF/PDMS conductive composite products by adjusting the carbon fiber content,mixing speed and mixing time and other variables.