Injection molding technology for recycled polypropylene

An injection molding process, technology of recycled polypropylene, applied in the direction of coating, etc.

Inactive Publication Date: 2020-10-27
惠州日田塑胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide an injection molding process for recycled polypropylene to address the technical problems of the existing recycled polypropylene injection molding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of injection molding technique of recycled polypropylene, it comprises the following steps:

[0027] Step 1: Take 60 to 80 components of recycled polypropylene, 10 to 30 components of toughening agent and 2 to 10 components of antioxidant and mix and stir evenly to prepare recycled materials. The toughening agent can improve the toughness, crack resistance and impact resistance of recycled polypropylene, and the toughening agent can reduce the brittleness of recycled polypropylene, making the recycled polypropylene easy to process and shape. Antioxidants effectively prevent the thermal degradation of recycled polypropylene and improve the impact resistance of recycled polypropylene.

[0028] Step 2: Take the mixed material and place it in a twin-screw extruder. The twin-screw extruder heats the mixed material to 260-300 degrees Celsius, and extrudes it into recycled material granules of predetermined specifications. The temperature of the mixture heated by the t...

Embodiment 2

[0035] A kind of injection molding technique of recycled polypropylene, it comprises the following steps:

[0036] Step 1: Take 60 components of recycled polypropylene, 10 components of toughening agent and 2 components of antioxidant and mix and stir evenly to prepare recycled materials. The toughening agent can improve the toughness, crack resistance and impact resistance of recycled polypropylene, and the toughening agent can reduce the brittleness of recycled polypropylene, making the recycled polypropylene easy to process and shape. Antioxidants effectively prevent the thermal degradation of recycled polypropylene and improve the impact resistance of recycled polypropylene.

[0037] Step 2: Take the mixed material and place it in a twin-screw extruder. The twin-screw extruder heats the mixed material to 275 degrees Celsius, and extrudes it into recycled material granules of predetermined specifications.

[0038] Step 3: Take 70 components of virgin polypropylene, 10 comp...

Embodiment 3

[0043] A kind of injection molding technique of recycled polypropylene, it comprises the following steps:

[0044] Step 1: Take 70 components of recycled polypropylene, 20 components of toughening agent and 3 components of antioxidant and mix and stir evenly to prepare recycled materials. The toughening agent can improve the toughness, crack resistance and impact resistance of recycled polypropylene, and the toughening agent can reduce the brittleness of recycled polypropylene, making the recycled polypropylene easy to process and shape. Antioxidants effectively prevent the thermal degradation of recycled polypropylene and improve the impact resistance of recycled polypropylene.

[0045] Step 2: Take the mixed material and place it in a twin-screw extruder. The twin-screw extruder heats the mixed material to 275 degrees Celsius, and extrudes it into recycled material granules of predetermined specifications.

[0046] Step 3: Take 75 components of virgin polypropylene, 10 comp...

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Abstract

The invention relates to an injection molding technology for recycled polypropylene. The injection molding technology comprises seven steps. The injection molding technology for recycled polypropyleneis simple and convenient, waste polypropylene is adopted to produce polypropylene products, wasting is reduced, and the situation that waste polypropylene is thrown all around, and the environment ispolluted is avoided; and the polypropylene products are unified and reliable in quality, high in quality and yield, excellent in performance and not prone to being fragile.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to an injection molding process of recycled polypropylene. Background technique [0002] Polypropylene is cheap and has excellent processing, physical, chemical and mechanical properties. more. At present, the existing comprehensive utilization of waste polypropylene includes recycling, pyrolysis recycling and incineration. Recycling is to process the recycled waste polypropylene into shape after sorting, cleaning, crushing and granulating. The existing recycling process of waste polypropylene is simple, and the performance of the prepared polypropylene products is not good, and the polypropylene products are easy to be brittle, so only low-grade polypropylene products can be produced. Contents of the invention [0003] Based on this, it is necessary to provide an injection molding process of recycled polypropylene to solve the technical problems of the existing injec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00C08L23/12B29K23/00B29K105/00
CPCB29C45/0001B29K2023/12B29K2105/0005B29K2105/0044C08L23/12C08L2205/06C08L2207/20
Inventor 柯贤兵何秀栋
Owner 惠州日田塑胶制品有限公司
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