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A Microsphere Turner

A flipper and microsphere technology, applied in the field of microsphere flippers, can solve the problems of difficult precise docking of PVA coating interval boundaries, poor uniformity of PVA coating, etc., and achieve the effects of easy control, peaceful conditions, and simple and convenient operation

Inactive Publication Date: 2017-07-18
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] In order to solve the problem in the prior art that the boundaries of the PVA coating intervals are difficult to be accurately docked, resulting in poor uniformity of the PVA coating, the present invention provides a microsphere flipper, which is suitable for the spin-coating method of PVA on the surface of large-size PS microspheres. Microsphere flipper for 180° reverse docking of PS microspheres in the coating

Method used

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  • A Microsphere Turner
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Embodiment Construction

[0020] Such as figure 1 and figure 2 As shown, the microsphere flipper of the present invention includes a holder 1, a rotating shaft 2, a positioning platform 3, a turning handle 4, a dynamic sealing structure, a sealing cover 8, a negative pressure interface 10 and auxiliary parts, wherein the rotating shaft 2 is hollow Convex cylindrical tube plastic construction. The holder 1 is installed on one end of the rotating shaft 2, and the inner diameter of the capillary in the holder 1 is determined according to the diameter of the PS single-layer ball to be coated. Sealing cap 8 is a screw cap that contains rubber gasket, is installed on the rotating shaft 2 other ends, so that remove the blockage in rotating shaft 2 pipes. The rotating shaft 2 runs through the dynamic sealing structure, the turning handle 4 and the positioning platform 3 . The sealing ring 7 is compressed by the rotating shaft 2 and the fixed cavity 9 to form a dynamic sealing structure. An annular groove ...

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Abstract

The invention provides a microsphere turner. The device includes a holder, a positioning table, a flip handle, a dynamic sealing structure, a sealing cover, and a negative pressure interface. The dynamic sealing structure includes a fixed cavity, a sealing ring and a rotating shaft; the holder is connected to one end of the rotating shaft, and the sealing The cover is connected to the other end of the rotating shaft; the turning handle is fixedly connected to the rotating shaft, and the positioning platform is closely connected to the turning handle; the fixed cavity is connected to the rotating shaft, and the rotating shaft is provided with annular grooves and air holes for forming a stable vacuum degree; The pressure port is fixedly connected with the fixed cavity. The microsphere flipper of the present invention is simple to operate, has mild conditions and is easy to control, and is suitable for 180° flipping and docking of microspheres in the preparation process of polyvinyl alcohol coating.

Description

technical field [0001] The invention belongs to the technical field of microsphere preparation, and in particular relates to a microsphere turner, which is suitable for the preparation of polyvinyl alcohol (PVA) coating on the surface of polystyrene (PS) microspheres with a size of 1000 μm or more. Flip the butt. Background technique [0002] With the development of high-power lasers in China, the diameter requirements for multi-layer polymer target pellets used in laser inertial confinement fusion physics experiments are also increasing. Therefore, the research on the preparation technology of large-size PS-PVA double-layer hollow microspheres is extremely important. . In order to solve the problem of uniform PVA coating on the surface of large-size PS microspheres, American researcher D. Steinman et al. proposed the spin coating method. In the preparation process, 2 / 3 of the PS microspheres are immersed in a certain concentration of PVA solution, given an appropriate rot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02
Inventor 苏琳初巧妹李洁刘梅芳黄勇刘世忠张占文李波陈素芬刘一杨李婧冯建鸿史瑞廷朱方华
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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