Method for recycling waste TPO skin material

A skin material and material block technology, which is applied in the field of material recycling, can solve problems such as waste of resources, and achieve the effects of reducing comprehensive costs, easy recycling and processing, and simple operation.

Pending Publication Date: 2020-12-29
广西鑫深科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for recycling waste TPO skin materials, which can solve the problem of resource waste caused by landfilling scrap workpieces containing waste TPO skin materials in the prior art

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] It includes the following steps:

[0030] A. Sorting and cleaning the scrapped workpieces containing TPO skin materials to remove different types of resins and other impurities such as ABS, PC, and PA;

[0031] B. Crushing the scrapped workpieces that have been sorted and cleaned to obtain material blocks with a diameter of 8-18mm;

[0032] C. Pour the broken material into the mixer, add a swelling agent aqueous solution with a concentration of 15wt% (prepared from butanone and cyclohexanone according to the volume ratio of butanone:cyclohexanone=1:1), and heat to Stir at 80°C for 10 minutes to make the adhesive between the TPO skin and the hard plastic (PP or ABS) swell and degummed, and then make the TPO skin and the hard plastic (PP or ABS) degummed and separated, then drain the swelling agent aqueous solution and add water After stirring and cleaning, use the density difference between the TPO skin and the hard plastic (PP or ABS) to settle and separate, and pick u...

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Abstract

The invention discloses a method for recycling a waste TPO skin material, and relates to the technical field of material recycling. The method comprises the following steps of sorting, clearing and removing impurities from scrapped workpieces containing TPO skin materials, crushing the scrapped workpieces into material blocks, pouring the material blocks into a stirrer, adding a swelling agent aqueous solution, heating, stirring, degumming, and separating to obtain TPO material blocks; and cleaning and drying the TPO material blocks, putting the TPO material blocks into a high-speed mixer, adding an extracting agent, stirring, feeding into a double-screw extruder through a forced feeding machine, extruding, defoaming, granulating, cooling, drying and dicing. The method solves the problem of resource waste caused by landfill treatment of the scrapped workpieces containing the waste TPO skin materials in the prior art, and recovered TPO particles can be used as a toughening agent of modified PP or soft products with low flexural modulus requirements, such as automobile wheel covers and fenders.

Description

technical field [0001] The invention relates to the technical field of material recycling, in particular to a method for recycling waste TPO skin materials. Background technique [0002] In order to adapt to the trend of lightweight and environmental protection of auto parts and improve the recycling and comfort of interior materials, thermoplastic polyolefin elastomer TPO has become the development direction of automobile instrument panel and door panel skin, and is favored by people. Polyolefin-based thermoplastic elastomer TPO gradually replaces traditional PVC skin materials. Among them, the soft TPO skin material for automotive interiors includes from bottom to top: 1) back coating: polyurethane-type finishing agent or polyolefin-based finishing agent; 2) foam layer: polypropylene foam layer; 3 ) Soft TPO surface layer; 4) Water-based finishing layer: it is a water-based polyurethane finishing agent. [0003] However, since automobile dashboards and door panels mostly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/04B29B17/02B29B17/00C08J11/08C08L23/02
CPCB29B17/00B29B17/02B29B17/04B29B2017/001C08J11/08C08J2323/02Y02W30/62
Inventor 刘双仕李志海韦绍珍陈龙莫兰武海刚黄国华
Owner 广西鑫深科技有限公司
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