Polymer film casting method preparation device

Abstract

The invention discloses a polymer film casting method preparation device which comprises a damping base, a casting mold, an upper cover, a monitoring unit and a mass flow controller, wherein the casting mold is connected with the damping base through a middle cylinder; the upper cover is connected with the middle cylinder to enable the casting mold to form a sealed casting cavity; a sealing ring and a porous membrane component are arranged at the connecting part of the upper cover and the middle cylinder; an interface for charging air and feeding a polymer solution is formed in the upper cover; the monitoring unit is connected with the upper cover and is communicated with the sealed casting cavity; the mass flow controller is communicated with the sealed casting cavity through the upper cover; and the mass flow controller is connected with a vacuum pump. As significant parameters such as the temperature, the pressure, the volatilization or diffusion velocities of polymers and solvents in a gas state, a liquid state and a solid state are monitored and controlled, the casting process procedures can be well handled, optimal process parameters which can eliminate or reduce the Marangoni effect can be found, film quality problems can be reduced, the repeatability and reliability of the process can be improved, and the quality and qualification rate of the film can be finally improved.

Description

technical field [0001] The invention belongs to the field of polymer processing and molding, and in particular relates to a polymer film casting method preparation device. Background technique [0002] In the laser inertial confinement fusion (ICF) research, polystyrene, doped polystyrene, polyethylene, polypropylene and other polymer films are commonly used to prepare various types of targets. In strong field physics experiments, polystyrene films are often used to study the interaction between laser light and materials. In addition to planar polymer film targets with simple structures, there are also some target types with more complex designs, such as modulation targets that require two-dimensional or three-dimensional sinusoidal modulation patterns on the surface of polystyrene targets, polystyrene film- Foam modulates composite targets, etc. The preparation of these targets is based on the preparation of polymer films. The polymer film prepared by casting method is on...

AI Technical Summary

Problems solved by technology

However, this process is greatly affected by the environment, the repeatability of the process is poor, and the reliability is low, so the qualification rate of the prepared film is low.

In addition, because of the lack of effective monitoring and control of the film preparation process, it is difficult to improve the film preparation process level through process optimization

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