Plastic modification device and method

Abstract

The invention provides a plastic modification device and method. The plastic modification device comprises a stirring device, the stirring device comprises a stirring cavity and a stirring shaft rotationally arranged in the stirring cavity, the stirring shaft is provided with a viscosity detection device, and the stirring cavity is provided with a temperature detection device; the viscosity detection device can be used for detecting the viscosity of the current molten plastic in the stirring cavity when the stirring shaft is used for stirring; the plastic modification device further comprises a control device, and when the viscosity of molten plastic in the stirring cavity reaches a preset value, the control device controls the stirring shaft and the viscosity detection device to stop working. By using the plastic modification device to process the plastic according to the method, the real-time viscosity value of the molten plastic in the stirring cavity can be detected through the viscosity detection device, the current mixing effect of the plastic and the modifier in the stirring cavity can be judged by monitoring the viscosity value of the plastic in the stirring cavity, and the purposes of scientific monitoring and datamation monitoring are achieved.

Description

technical field [0001] The invention generally relates to the technical field of plastic manufacturing, and in particular to a plastic modification device and method. Background technique [0002] Modified plastics refer to plastic products that are processed and modified on the basis of general-purpose plastics by methods such as filling, blending, and reinforcement, and have improved properties such as flame retardancy, strength, impact resistance, and toughness. When preparing modified plastics, it is necessary to first heat the plastic raw materials into a molten state, then add modifiers to the molten plastics, mix and stir them into a mixture, and finally extrude the mixture to shape and cool. [0003] The performance of modified plastics has a lot to do with whether the modifier and the plastic are evenly mixed. The method used in the existing plastic modification devices is to use a heating device to heat and melt the plastic, and stir the melted plastic with the mod...

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Problems solved by technology

[0003] The performance of modified plastics has a lot to do with whether the modifier and plastics are evenly mixed. The existing plastic modification devices mostly use heating devices The plastic is heated and melted, and the melted plastic is stirred with the modifier to fully fuse the plastic. However, in the existing manufacturing process, the plastic cannot be fully melted when the plastic is heated to a molten state, resulting in the plastic in the molten state and the modification. After the agent is mixed and stirred, there are some plastic particles in the mixture, which will adversely affect the performance of the modified plastic; the plastic in the molten state has poor fluidity, and the modifier cannot be fully and uniformly mixed with the plastic in the molten state, which will affect the modified plastic. In view of the above problems, the Chinese invention patent with the patent application number CN202011082902.6 discloses a modified plastic preparation process. The mixing stage is mixed by a modified plastic preparation machine. The machine includes a grinding mechanism and a stirring mechanism. The grinding mechanism can grind the plastic particles to promote the melting of the plastic particles. The stirring mechanism can fully integrate the plastic and the modifier, so as to improve the mixing efficiency of the plastic and the modifier. Improve the mixing effect, so as to improve the performance of modified plastics

[0004] However, although this method can improve the mixing efficiency when preparing modified plastics, whether the plastics and modifiers are evenly mixed can only be judged by mixing time or experience. It is impossible to intuitively understand the mixing effect of plastics and modifiers, and it is impossible to monitor scientifically

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