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Degumming agent and method for removing bottom glue at plastic surface by using the same

A degumming agent and plastic technology, which is applied in the field of cleaning compositions containing anionic, nonionic surfactants and organic hydrocarbon compounds, can solve the problems of plastic surface damage removal, uncleanness and thoroughness, and improve the quality of plastics. Recycling and reuse of resources, high degumming efficiency

Inactive Publication Date: 2008-05-28
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It damages the plastic surface and does not remove cleanly and thoroughly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prepare 10g of degumming agent, weigh the sample according to the weight of the following components

[0033] Propanol 4.0g

[0034] Lauric acid 0.1g

[0035] Glycerin 0.5g

[0036] Water 4.6g

[0037] Sodium dodecylbenzenesulfonate 0.3g

[0038] Span 80 0.3g

[0039] Penetrant (JFC-2) 0.2g

[0040] The above materials are mixed according to the weight ratio and stirred evenly to obtain the degumming agent of the present invention.

[0041] Degumming experiment:

[0042] Put the plastic with primer and self-adhesive on the surface into the above-mentioned degumming agent at 50°C, stir for 10 minutes, the adhesive layer swells away from the plastic surface, wipe off the removed adhesive layer, and wash with distilled water The self-adhesive removal rate reaches 100%, and there is no change on the plastic surface.

Embodiment 2

[0044] Prepare 10g of degumming agent, weigh the sample according to the weight of the following components

[0045] n-propanol 4.0g

[0046] Lauric acid 0.1g

[0047] Glycerin 0.5g

[0048] Water 4.6g

[0049] Sodium dodecylbenzenesulfonate 0.5g

[0050] Span 80 0.3g

[0051] The above materials are mixed according to the weight ratio and stirred evenly to obtain the degumming agent of the present invention. Degumming experiment

[0052] Put the plastic with primer and self-adhesive on the surface into the above degumming agent at 55°C, stir for 10 minutes, the adhesive layer swells away from the plastic surface, wipe off the removed adhesive layer, and wash with distilled water The self-adhesive removal rate reaches 95%, and there is no change on the plastic surface.

Embodiment 3

[0054] Prepare 10g of degumming agent, weigh the sample according to the weight of the following components

[0055] Butanediol 4.1g

[0056] Lauric acid 0.2g

[0057] Ethylene glycol monoisobutyl ether 0.6g

[0058] Sodium 1-octylsulfonate 0.2g

[0059] Sodium Alkyl Polyoxyethylene Ether Sulfate 0.3g

[0060] Penetrant (JFC-2) 0.1g

[0061] water 4.5g

[0062] Degumming experiment

[0063] Put the plastic with primer and self-adhesive on the surface into the above-mentioned degumming agent at 40°C, stir for 10 minutes, the adhesive layer swells away from the plastic surface, wipe off the removed adhesive layer, and wash with distilled water The self-adhesive removal rate reaches 100%, and there is no change on the plastic surface.

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PUM

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Abstract

Disclosed is a degumming agent which is composed of alcohol, acid, colliquefaction agent, surface active agent, osmotic agent and water, wherein the alcohol refers to 30.0-50.0 w% aliphatic alcohol, the acid is 0.5-3.0 w% saturated fatty acid with C9-C16 linear chain, the colliquefaction agent is 3.0-9.0 w% aliphatic alcohol and monoether, the surface active agent refers to 4.0-9.0 w% anion and nonionic, and the osmotic agent is 0.0-2.0 w% JFC-2. The process of employing the degumming agent to remove clearcole and self-adhesive paper placed on the surface of plastics is that the degumming agent is heated to 40-60 DEG C, the plastics of which the adhesive is ready to be removed are mixed in the degumming agent for 10 minutes, enabling the contact between the adhesive and the degumming agent to achieve best degumming effect. The degumming agent of the invention has relatively high degumming capability and no damage to the surface of the plastics, and also has the advantages of low cost, innoxiousness, non-toxicity, no flammability, environment preservation, convention and safe utilization. Further the degumming agent can be used repeatedly.

Description

technical field [0001] The present invention relates to a composition of a degumming agent. It belongs to the cleaning composition mainly based on surfactant, especially the cleaning composition containing anionic, nonionic surfactant and organic hydrocarbon compound. Background technique [0002] Currently, plastic pollution is undoubtedly the most serious. Recycling and reusing plastics is one of the important channels to solve white pollution. When dealing with recycled plastic bottles, plastic barrels, boxes and other plastic products, tapes and tapes, such as self-adhesive, instant glue and other adhesive products, are often stuck. These primers have a special molecular structure, strong adhesion, and are difficult to remove, especially for primers that have been cured by the sun and have been cured for a long time because of the dirt formed after absorbing dust, it is more difficult to remove. These seriously affect the quality of recycled plastics and must be clean...

Claims

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Application Information

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IPC IPC(8): C11D3/20C11D1/83
Inventor 杨洋徐同宽崔励曲丰作周长俊
Owner DALIAN POLYTECHNIC UNIVERSITY
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