Preparation device of experiment PVC composite membrane with photocatalytic activity

Abstract

The invention relates to the field of photocatalysis, particularly relates to a preparation device of an experiment PVC composite membrane with a photocatalytic activity, and aims to provide the preparation device of the experiment PVC composite membrane with the photocatalytic activity. According to the technical scheme of the device, the preparation device of the experiment PVC composite membrane with the photocatalytic activity comprises a bottom frame, an extrusion assembly, an attaching assembly, a cleaning assembly, a control screen, a first annular cutter and the like, wherein the extrusion assembly is connected with the attaching assembly, and the attaching assembly is connected with the first annular cutter. When the device is used, hole digging operation is automatically conducted on the upper portion and the lower portion of a resin and silicone rubber mixture from the interior, and then holes are filled with modified polyvinyl chloride, so that the polyvinyl chloride is evenly distributed in the resin and silicone rubber mixture; and a layer of resin and silicone rubber mixture is enabled to automatically pre-coat a bottom membrane, and then drying is conducted so as to enable the bottom membrane to be fixed to an upper membrane, so that the stability is greatly improved, and meanwhile, edges of the membranes are automatically cut neatly.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a preparation device for a PVC composite film with photocatalytic activity for experiments. Background technique [0002] The principle of photocatalysis is based on the redox ability of photocatalysts under the condition of light, so that the purpose of purifying pollutants, material synthesis and transformation can be achieved. Typically, photocatalytic oxidation uses semiconductors as catalysts and light as energy to degrade organic matter into carbon dioxide and water. Therefore, photocatalytic technology, as an efficient and safe environment-friendly environmental purification technology, has been recognized by the international academic community for the improvement of indoor air quality. [0003] In the prior art, one of the PVC films uses photocatalytic materials to promote degradation, which consists of an upper film and a lower film. When the laboratory conducts photocata...

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Problems solved by technology

[0005] In order to overcome the prior art, one of the PVC films uses photocatalytic materials to promote degradation, which consists of an upper film and a lower film. When the laboratory conducts photocatalytic degradation experiments, it is necessary to prepare various modified PVC film samples. The existing device When preparing the upper film, inject silicone rubber, resin and modified polyvinyl chloride into the extruder together. The physical properties of silicone rubber and resin are close, while the physical properties of modified polyvinyl chloride are different from those of silicone rubber and resin, resulting in modification The distribution of polyvinyl chloride is uneven, so that the content of modified polyvinyl chloride in the local position of the extruded film is too low, which greatly reduces the performance of the film. In addition, when the existing device performs composite operation of the upper film and the lower film, the upper film is directly hot-pressed To the upper surface of the lower film, the connection between the upper film and the lower film is unstable, and even a bulging phenomenon occurs. In addition, after the existing device combines the upper film and the lower film, the edges of the composite film are not neat. The technical problem to be solved is: Provide a PVC composite film preparation device with photocatalytic activity for experiments

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