Theoretical Arithmetic And Optimum Design For The 0-3 Electronic Packaging Composites

The pulsed electrical energy caused by chemical energy is better than the traditional one in the special application for its high energy storage density, low capacity, high resistant to the electromagnetic interference. It's adapt to energy storage capacitor when it's used in the transducer So it's very important to pay research on the low dielectric constant, high acoustic impedance, good stress distribution, new encapsulation materials.Firstly, a simple model for the different connectivity (0-3 and 1-3) of electronic encapsulation has been developed where the volume fraction of the particle phase is calculated to optimize the dielectric constant, specific impedance and the longitudinal velocity. I also compare with different polymer matrix. The result indicates that the performance of the composites increases linearly with the volume fraction of the particle. The 1-3 connectivity is larger than the 0-3 connectivity under the same volume fraction condition. The selection of the polymer is also discussed in detail. It indicates that the polymer has a greatly effect on the dielectric constant and acoustic impedance .The higher dielectric constant ,stiffer particle and the lower density, softer polymer are good for our design. Therefore, the modeling is a good way to design the composite in the smart structure for transducer packaging.Secondly, by utilizing the finite element method combined with cell models, the effects of soft matrix morphologies composites with hard reinforcing particles are investigated. A new model not considering the particle has been used for our research with the axisymmetric unit cell model, compared with the classical axisymmetric cell model, taking the particle into consideration. The cylindrical and the spherical inclusion have been calculated using the two different models. The different matrix morphologies have been used to prove our new model. The effects of matrix flow behavior on the stress distribution of the matrix have been derived using the both models. The results show that the spherical particle is easier to compress than the cylindrical one and it's good for the dimple fracture of the matrix. Matrix morphologies also have effect on the stress distribution of the composite.