Preparation Of Polymer Composite Array Materials And Study On Structure Size Regulation

In fusion-type laser physics experiments such as inertial confinement fusion(ICF),the high-temporal-resolution radiation source required for diagnosing X-rays has been a research hotspot in recent years.This research explores the use of metal micro / nanowires to obtain imaging and spectral information.Metal micro / nanowire arrays with high energy transfer efficiency,super hot electron density,and high X-ray gain have the potential to be used as strong radiation source materials.In this paper,through multi-stage hot stretching of polymer preforms embedded in a specific array structure,a porous polymer template was used in conjunction with electrochemical deposition to successfully grow a copper microwire array in the template.The flow properties of the two raw materials PMMA and PS used in the experiment were tested.The glass transition temperatures of the two materials were 104.32 ? and 105.93 ?,respectively.The viscosity of the two materials was close to 957 pas at a shear rate of 75s-1.At the drawing rate of 0.5mm / min,a square polymer wire with a stable outer diameter can be obtained,and at this rate,a PMMA / PS composite wire with an inner diameter ratio of 0.49-0.51 can be obtained.Two different specifications of PMMA porous templates were designed and prepared.The 6-hole 3 × 3 structure aperture and spacing were 5 ?m,and the 26-hole 7 × 7 structure aperture and spacing were 2 ?m.The thickness of the template was controlled by cutting.Reducing the diameter of the composite wire can also reduce the aperture pitch to 900 nm,and the error between the aperture and the design value is within 10%.After plasma cleaning was used to improve the wettability of the template surface,a copper microwire was grown in the pores of the porous template using an electrochemical deposition method,and the cathode was applied with a pulse potential of 0.6V.Structural integrity and accurate sizesize are the key to the performance of the material.Observe the cut surface of the template with an optical microscope.Observe the Cu wire inside the template with the micron CT.The complete array structure can be seen.After removing part of the PMMA template,the SEM photo of the array is taken.The surface of the array is smooth.The EDS of Cu wire shows that the array structure is copper.EDS shows that the main component of the array is copper,and XRD shows that the diffraction peak of the copper wire has a good correspondence with the standard single crystal copper of [111] preferred orientation.This paper provides a new idea for the preparation of Cu micro-nano arrays,expands the types of metal array,and can design more complex structures from micron to nanometer size for various optical applications,such as: spectral sensing? laser Phased array and photonic crystal fibers.