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Metal surface rubber body removal method

A metal surface and rubber body technology, applied in recycling technology, plastic recycling, etc., can solve the problems of long removal time, difficult treatment of degumming waste liquid, high pollution of chemical solvents, etc., and achieve short removal time and low pollution Small, easy-to-handle effects

Active Publication Date: 2014-06-04
MITAC PRECISION TECH(KUNSHAN) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the purpose of this invention is to provide a method for removing the rubber body on the metal surface, to solve the problem that the chemical solvent used in the existing removal method is more polluting, the removal time is long, and the treatment of degumming waste liquid is more difficult. question

Method used

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  • Metal surface rubber body removal method

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Embodiment 1

[0036] The swelling separation solution may include the following components calculated according to mass fraction:

[0037] Dichloromethane 80%;

[0038] Absolute ethanol 20%.

Embodiment 2

[0040] The swelling separation solution may include the following components calculated according to mass fraction:

[0041] Dichloromethane 85%;

[0042] Absolute ethanol 15%.

Embodiment 3

[0044] The swelling separation solution may include the following components calculated according to mass fraction:

[0045] Dichloromethane 82%;

[0046] Absolute ethanol 18%.

[0047] Wherein, the reaction temperature in step 101 may be room temperature.

[0048] Wherein, the separating agent is N, N-dimethylformamide (also known as DMF; N, N-dimethylformamide

[0049] Formamide formic acid whose hydroxyl group is replaced by dimethylamino group) solution, the reaction time of the step 102 is 0.5-1 hour, and the reaction temperature of the step 102 can be room temperature.

[0050] In the method for removing the rubber body on the metal surface of the present invention, the adhesive is loosened by the swelling separation solution, softened and swollen and partially dissolved, and then separated from the rubber body, so as to achieve the bonding between the rubber body and the metal surface. Separation; taking out the metal and the rubber body, the swelling separation solu...

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Abstract

The invention discloses a metal surface rubber body removal method, and a metal and a rubber body are bonded through an adhesive, and the method comprises the following steps: (1) a bonding part of the metal and the rubber body is completely submerged in a swelling separation solution until the rubber body is separated from the metal surface; (2) the metal with the rubber body separated is taken out, and an adhesive bonding part of the metal is completely immersed into a separating agent until the adhesive is completely separated. A chemical treatment liquid capable of dissolving the whole rubber body is not used, the swelling separation solution for swelling separation of the rubber body is used, and the used separating agent is also environmentally friendly, so that the pollution is less; the rubber body is removed by swelling of the adhesive rather than the entire dissolution, so that the removal time is shorter; the swelling can be repeatedly used, and the separating agent is environmental protection, so that the degumming wastewater treatment is relatively simple.

Description

【Technical field】 [0001] The invention relates to a method for removing a rubber body, in particular to a method for removing a rubber body on a metal surface. 【Background technique】 [0002] The bonding between the metal casing and the TPU (Thermoplastic polyurethane, thermoplastic polyurethane elastomer) rubber-like body usually uses an adhesive as an intermediary to enhance the adhesion between the TPU-like elastomer and the metal casing. [0003] For the defective products produced, if they are recycled, the metal casing and the TPU rubber body need to be separated. The separation solvent used often contains strong oxidizing phenol components, which are not only highly polluting, but also take a long time to degumming, and it is difficult to treat the degumming waste liquid. [0004] In view of this, it is necessary to provide a method for removing the rubber body on the metal surface to solve the above problems. 【Content of invention】 [0005] In view of the above p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G5/00C23G5/028C23G5/036
CPCY02W30/62
Inventor 陈其亮
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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