Device for regenerating waste and old thermosetting plastics, and technology thereof

A recycling equipment and thermosetting technology, applied in the field of waste thermosetting plastic recycling equipment and recycling process, can solve the problems of poor applicability, poor product performance and high production cost, achieve orderly and compact settings, restore processability, and restore plasticity. Effect

Inactive Publication Date: 2014-04-30
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method refers to the method of directly using the waste after only changing the physical form of the waste without destroying the chemical structure of the polymer itself or changing its basic composition. This method has high production efficiency, simple operation, and two The secondary pollution is less, but the performance of the products produced is poor, and it can only be used as secondary products, with low economic benefits; the chemical method is to recycle through cracking into monomers and oligomers or make activated carbon through sintering, the defect is that the process is complex , poor applicability, low recovery efficiency, high production cost, high technical difficulty, difficult to control the toxic by-products produced by the reaction, and seriously pollute the environment

Method used

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  • Device for regenerating waste and old thermosetting plastics, and technology thereof
  • Device for regenerating waste and old thermosetting plastics, and technology thereof
  • Device for regenerating waste and old thermosetting plastics, and technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] This embodiment takes waste thermosetting phenolic laminated plastics as an example:

[0052] Firstly, the waste thermosetting phenolic laminated plastics are coarsely crushed through the crushing device 1, and the coarsely crushed materials fall through the screen 2 to obtain crushed materials, which are then transported to the feed port of the degradation device 4 by the conveyor belt 3.

[0053] The crushed material enters the degradation device 4 from the feed port, and the rotating speed of the shearing knife shaft is controlled to be 3500r / min. The relatively coarse material starts to be sheared through the relative rotation between the shearing knife shaft and the annular fixed knife 24, and then follows The fine materials rotating along the shearing knife shaft enter into the grinding chamber between the movable grinding disc and the static grinding disc, and the relative rotation between the movable grinding disc 27 and the static grinding disc 28 makes the mate...

Embodiment 2

[0059] This embodiment takes waste and old thermosetting rigid polyurethane plastics as an example:

[0060] The entire regeneration process flow is the same as in Example 1. During the degradation process, the rotational speed of the shearing knife shaft is set at 2500 r / min, and the degradation time is 80 minutes. In the regeneration process, the ingredients and degradation materials added are: 80% degradation materials, 19% polypropylene PP, 0.5% antioxidant 1010 and 0.5% antioxidant 168, and the rotation speed of the regeneration device 6 is set according to the mass percentage. 1000r / min, complete regeneration time is 12 minutes. During the extrusion compression process, the temperature of the barrel 17 is controlled at 170-180° C., the size of the pressure press is 7 Mpa, the size of the holding pressure is 4 Mpa, and the holding time is 9 minutes.

[0061] The pressed thermosetting rigid polyurethane plastic parts have been tested for mechanical properties, and have a ...

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Abstract

The invention discloses a device for regenerating waste and old thermosetting plastics, and a technology thereof. The device is characterized in that the device comprises a breaker used for breaking the waste and old thermosetting plastics to obtain a broken material, and a conveyer belt is arranged to send the broken material to a degrader; the degrader, a regenerator and an extrusion compressor are arranged in a vertical structure manner; and the material outlet of the degrader is connected to the material inlet of the regenerator, and the material outlet of the regenerator is connected to the hopper of the extrusion compressor. The regeneration of the waste and old thermosetting plastics is realized through crude breaking, degradation, regeneration and extrusion mold pressing of the waste and old thermosetting plastics. In the invention, an efficient regeneration recovery method is provided for the recycle of the waste thermosetting plastics which are difficult to regenerate, and the recycle from the waste and old thermosetting plastics to regenerated products is realized, so the thermosetting plastics can be widely applied.

Description

technical field [0001] The invention relates to a regeneration equipment and a regeneration process, more specifically to a waste thermosetting plastic regeneration equipment and a regeneration process. Background technique [0002] Thermosetting plastics refer to a type of plastic in which the resin undergoes chemical changes during processing, the molecular structure changes from a linear structure before processing to a network crosslinked structure, and the product has the characteristics of insoluble and infusible. Commonly used thermosetting plastics include polyurethane, phenolic resin, epoxy resin, unsaturated polyester, melamine and urea-formaldehyde resin. There are many differences between thermosetting plastics and thermoplastics in performance. It has the advantages of high strength, good creep resistance, high heat resistance temperature, high processing dimensional accuracy and good arc resistance. Thermosetting plastics are mainly used in electrical insulati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/10C08J11/04C08L61/06C08L75/04C08L23/12
CPCB29B17/04B29K2101/10B29B17/0042Y02W30/62
Inventor 刘志峰宋守许石磊吴仲伟潘绍波成焕波
Owner HEFEI UNIV OF TECH
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