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Chemical recovery method of vehicle interior ceiling

A chemical recycling and in-vehicle technology, applied in the field of chemical recycling of vehicle interior ceilings, can solve problems such as secondary pollution and performance degradation

Inactive Publication Date: 2011-08-31
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is: in order to improve the articles made of the material recovered by the existing physical method, its performance will decrease, it is only suitable for low-grade products, and the recovery of the energy method will bring secondary pollution and other problems, so a kind of vehicle interior is proposed. Chemical Recycling Methods for Trim Ceilings

Method used

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  • Chemical recovery method of vehicle interior ceiling
  • Chemical recovery method of vehicle interior ceiling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) 100 grams of vehicle interior ceiling scraps (structure such as figure 1 As shown) after cutting, immerse in 300 grams of glycerin organic compound solvent (which contains 30 grams of ethylene glycol), heat to 100 ° C and stir, the polyurethane soft foam in the ceiling will automatically dissolve, and filter off the solvent after the reaction is completed. Add water to make the PET cloth and polyurethane composite board separate automatically due to gravity.

[0021] (2) Polyurethane composite board is made of polyurethane rigid foam, glass fiber, non-woven fabric and rubber powder by hot pressing. Heat the organic solvent methyl oleate to 120°C, then add the polyurethane composite board and stir until the materials of each layer in the polyurethane composite board are completely separated, the mass ratio of the organic solvent to the polyurethane composite board is 10:1, and the insoluble matter Polyurethane rigid foam, glass fiber and non-woven fabric are filtere...

Embodiment 2

[0026] (1) After cutting 100 grams of vehicle interior ceiling scraps, immerse them in 300 grams of glycerol organic compound solvent (which contains 30 grams of ethylene glycol), heat to 80°C and stir, the polyurethane soft foam in the ceiling will automatically dissolve After the reaction, the solvent is filtered off, and water is added to automatically separate the PET cloth and the polyurethane composite board due to gravity.

[0027] (2) The organic solvent butyl oleate is heated to 140 DEG C, then the polyurethane composite board is added therein and stirred until each layer of material in the polyurethane composite board is completely separated, the mass ratio of the organic solvent to the polyurethane composite board is 20:1, Filter out the insoluble polyurethane rigid foam, glass fiber and non-woven fabric, and then centrifuge the coarse rubber powder from the organic solvent.

[0028] (3) Add the extraction agent cyclohexane to the centrifuged coarse rubber powder, s...

Embodiment 3

[0032] (1) After cutting 100 grams of vehicle interior ceiling scraps, immerse them in 3000 grams of butanediol organic compound solvent (which contains 300 grams of ethylene glycol and 100 grams of triethylamine), heat to 100 ° C and stir, the polyurethane in the ceiling The soft foam will dissolve automatically. After the reaction is over, the solvent is filtered out, and water is added to automatically separate the PET fabric and the polyurethane composite board due to gravity.

[0033] (2) The organic solvent methyl palmitate is heated to 120 DEG C, then the polyurethane composite board is added therein and stirred until each layer of material in the polyurethane composite board is completely separated, the mass ratio of the organic solvent to the polyurethane composite board is 35: 1, Filter out the insoluble polyurethane rigid foam, glass fiber and non-woven fabric, and then centrifuge the coarse rubber powder from the organic solvent.

[0034] (3) Add extractant acetone t...

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Abstract

The invention relates to a chemical recovery method of a vehicle interior ceiling, which comprises the following steps: cutting a ceiling and then dipping the cut ceiling into an organic compound solvent; heating the solvent to dissolve flexible polyurethane foams in the ceiling; filtering out the solvent after the reaction and dipping the ceiling into water so as to ensure that a PET fabric and a polyurethane composition board are automatically separated under the action of gravity; centrifuging the filtered compound solvent to obtain the flexible polyurethane foams; heating the organic solvent and then adding the polyurethane composition board to the organic solvent until various layers of substances in the polyurethane composition board are separated; filtering out insoluble rigid polyurethane foams, glass fibers and non-woven fabric mixtures and directly dipping the rigid polyurethane foams, the glass fibers and the non-woven fabric mixtures into water for sorting; centrifuging out course rubber powders from the organic solvent; adding an extracting agent to the course rubber powder as well as stirring and then adding low carbon alcohol to an obtained mixture to obtain a whitefloccule; and filtering or centrifuging the white floccule to obtain pure rubber powder. The method has low labor intensity, and the organic solvent can be repeatedly used. Moreover, the content of each component in the vehicle interior ceiling can be precisely analyzed, thus the method can be applied to product quality inspection.

Description

Technical field: [0001] The invention relates to a chemical recovery method for the interior ceiling of a vehicle, which can separately recover HDPE rubber powder, polyurethane, glass fiber, non-woven fabrics and knitted fabrics, and can analyze each component in the quality inspection of interior ceiling raw materials and finished products content. Background technique: [0002] The automobile industry is the pillar industry of our country's national economy. After entering the 21st century, the automobiles produced in the 1980s and 1990s in our country have entered the phase-out period one after another. In the near future, the disposal of these abandoned automobiles will become a major problem that our country needs to solve urgently. The End-of-Life Vehicle Directive passed by the European Parliament and the Council of the European Union in 2000 clearly stipulates that before January 1, 2006, the reuse and recycling of all end-of-life vehicles should be increased to more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/08C08L75/04C08L23/06B09B3/00
CPCY02W30/62
Inventor 姚建峰陈军张利雄
Owner NANJING TECH UNIV