Production process for preparing regenerated board from recycled waste phenolic plastic

A technology of phenolic plastics and production process, which is applied in the field of recycling waste phenolic plastics, can solve the problems of unfavorable promotion and use of recycling methods, and achieve the effects of sustainable utilization, performance improvement, and mass recycling

Pending Publication Date: 2022-03-08
INTELLIGENT MFG INST OF HFUT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a production process for recycling waste phenolic plastics to prepare recycled boards in view of the fact that the existing recycling methods of waste thermosetting plastics are not conducive to popularization and use.

Method used

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  • Production process for preparing regenerated board from recycled waste phenolic plastic
  • Production process for preparing regenerated board from recycled waste phenolic plastic
  • Production process for preparing regenerated board from recycled waste phenolic plastic

Examples

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Effect test

Embodiment 1

[0028] This example proposes a production process for recycling waste phenolic plastics to prepare recycled boards, which is based on the mechanical crushing and recycling method, through which the waste phenolic plastics are partially decrosslinked by mechanical force, and the surface is activated to restore the plasticity of the part, so that it can be added A recycling process in which new materials are remolded into recycled boards.

[0029] Please combine figure 1 and figure 2 , The production process includes the following processes: pretreatment, crushing and grinding treatment and mixed molding treatment.

[0030] Pretreatment is used to dry the waste phenolic plastic after cleaning. In this embodiment, first put the waste phenolic plastic into an ultrasonic water tank for ultrasonic cleaning to remove surface stains, then perform spray washing, and finally dry by drying equipment to remove surface moisture. For waste phenolic plastics, you can choose the defective...

Embodiment 2

[0038] This embodiment discloses a production system for recycling waste phenolic plastics to prepare recycled boards, which is used to remake waste phenolic plastics into recycled boards; the production system includes a cleaning and drying unit and a milling unit in sequence according to the processing process and hybrid compression molding units.

[0039] The cleaning and drying unit is used to clean the waste phenolic plastics first, and then dry the cleaned waste phenolic plastics. In this embodiment, the cleaning process includes two steps of ultrasonic cleaning and water washing. Specifically, the waste phenolic plastics are put into the cleaning and drying machine, and first transported to the ultrasonic water tank by the conveyor belt for ultrasonic cleaning to remove the stains on the surface, and then transported to the spraying machine. It is further cleaned in the shower system, and finally passed through the drying system to remove the moisture on the surface.

...

Embodiment 3

[0044] see image 3 , this embodiment discloses a production equipment for recycling waste phenolic plastics to prepare recycled boards. The first half of the washing and drying machine 1 cleans the waste phenolic plastics to remove the surface stains of the waste phenolic plastics, and the second half dries the cleaned waste phenolic plastics; the crusher 2 breaks the cleaned and dried waste phenolic plastics into small particles; Machine 3 grinds waste phenolic plastic particles, breaks the cross-linked and solidified molecular chains of waste phenolic plastics, destroys the cross-linked structure in waste phenolic plastics, and activates the surface of the powder. There is a magnetic separation mechanism at the entrance of the mill , to screen out the waste plastic particles with metal, and there is a vibrating screen at the outlet, which can screen the powder that meets the particle size requirement into the storage tank, and the powder that does not meet the target is tra...

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Abstract

The invention relates to a production process for preparing a regenerated plate from recycled waste phenolic plastic. The production process comprises the following steps of pretreatment, crushing and grinding treatment and mixed compression molding treatment. The pretreatment is used for drying the waste phenolic plastic after cleaning. The crushing and grinding treatment is used for crushing plastics into waste particles; grinding the waste particles into powder; the mixed compression molding treatment is used for mixing the powder and the new material powder into mixed powder according to the proportion; and carrying out compression molding on the mixed powder by using a hot press mold to form a regenerated plate. According to the production process, waste phenolic plastic is used as a raw material, part of cross-linked and cured molecular chains are broken by the waste phenolic plastic under the action of mechanical force, the plasticity is recovered again, after the waste phenolic plastic is added into a new material, the surfaces of the new material and the old material have better compatibility, and the performance of a regenerated plate can be improved during mold pressing; the waste phenolic plastic is effectively recycled, the pollution of the waste phenolic plastic to the environment is reduced, and the sustainable utilization of resources is realized.

Description

technical field [0001] The invention relates to a method for recycling waste phenolic plastics, in particular to a production process for recycling waste phenolic plastics to prepare regenerated boards. Background technique [0002] Phenolic plastic is a thermosetting plastic with infusible properties under high temperature and other environments, which is made of phenolic resin as a base and added with various fillers, lubricants, plasticizers, etc. Good bending resistance, heat resistance and high temperature resistance are used in mechanical parts, electrical parts, auto parts and daily necessities. Because of its stable performance and not easy to degrade, phenolic plastic waste also brings environmental pollution problems, and its The nature of cross-linking and curing also hinders its recycling. Therefore, how to better recycle waste thermosetting plastics and realize the sustainable utilization of resources has become the focus of researchers. [0003] At present, th...

Claims

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Application Information

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IPC IPC(8): B29C43/02B29B17/00B29B17/04B29B17/02C08L61/06C08L27/06C08L23/06
CPCB29C43/02B29B17/00B29B17/0404B29B17/0412B29B17/02C08L61/06B29B2017/001B29B2017/0015B29B2017/0484B29B2017/0272B29B2017/0224B29B2017/0203C08L2205/025C08L27/06C08L23/06Y02W30/52Y02W30/62
Inventor 李新宇翟文星秦凡廖煜民
Owner INTELLIGENT MFG INST OF HFUT
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