Chemical recovery method of vehicle interior ceiling

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...

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

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