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Aluminum-plastic separating agent and preparation method thereof

A technology of aluminum-plastic separation and separating agent, which is applied in the chemical industry, can solve the problems of low material recycling rate, corrosion of aluminum-plastic materials, and large environmental pollution, etc., and achieve the effect of fast separation speed, good quality of aluminum-plastic, and simple use

Inactive Publication Date: 2012-07-04
CHANGZHOU INST OF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of large environmental pollution, corrosion of aluminum-plastic materials, low material recycling rate, and small added value in the aluminum-plastic separation process, the invention provides an aluminum-plastic separation process with high separation efficiency, low corrosiveness, and less pollution. materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First weigh 84g of water, 250g of acetic acid, 250g of xylene, 250g of dichloromethane, and 166g of sec-butyl acetate in sequence, then soak 260g of cleaned and pulverized aluminum-plastic material for toothpaste packaging into the separating liquid, stir at room temperature, and separate , Filtration, cleaning and drying. It was found that it could be completely separated after 72 hours, the separation rate reached 90%, the degree of aluminum corrosion was less than 1%, and after repeated use for 5 times, 90% of the active ingredients remained.

Embodiment 2

[0020] First weigh 90g of water, 180g of o-toluic acid, 180g of liquid paraffin, 360g of dichloromethane, and 180g of sec-butyl acetate in sequence, then take out 1000g of the prepared separation liquid, and soak 260g of cleaned and crushed toothpaste packaging in aluminum-plastic materials into the separation liquid, stirred at room temperature, separated, filtered, washed, and dried. It was found that it can be completely separated after 86 hours, the separation rate reaches 92%, the aluminum corrosion degree is less than 1%, and it can be reused. After repeated use for 5 times, 90% of the active ingredients remain.

Embodiment 3

[0022] First weigh 85g of water, 250g of acetic acid, 250g of xylene, 250g of dichloromethane, and 165g of sec-butyl acetate in sequence, then take out 1000g of the prepared separation liquid, soak 260g of the cleaned and crushed aluminum-plastic material for toothpaste packaging into the prepared separation liquid , stirred at 50°C, separated, filtered, washed, and dried. It was found that it can be completely separated after 1.5 hours, the separation rate reaches 99%, the degree of aluminum corrosion is less than 5%, and after repeated use for 5 times, 60% of the active ingredients remain.

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Abstract

The invention relates to an aluminum-plastic separating agent and a preparation method thereof. The separating agent comprises the following components in part by weight: 1 to 25 parts of water, 5 to 50 parts of acidic compound and 25 to 95 parts of organic solvent. The preparation method comprises the following steps of: weighing corresponding components in the proportion in turn, and properly mixing to obtain a uniform phase; and soaking aluminum-plastic crushed matters in the prepared separating solution, stirring, separating and washing to finally obtain 80 to 90 percent of plastic and 8 to 15 percent of aluminum. The separating agent is difficult to volatilize, has a high speed of separating the aluminum and plastic, and does not have oxidation corrosion on the aluminum. In addition, the separating agent has the advantages of readily available raw materials, low environmental pollution and reuse, production equipment and process are simple, and the cost is low. The product prepared by the invention can be widely applied to aluminum-plastic separation of aluminum-plastic packaging materials such as medicines, foods, cosmetics, daily products, industrial products and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a novel high-efficiency aluminum-plastic separating agent and a preparation method thereof. Background technique [0002] The aluminum-plastic composite material is a composite material with a multi-layer structure formed by using aluminum as the skeleton, and then bonding it with polyethylene, polyvinyl chloride and other plastics through hot melt adhesives. It has metal and non-metal materials. Features, that is, excellent mechanical properties, corrosion resistance and temperature resistance, and the characteristics of light weight, light blocking, heat insulation, heat preservation and low cost. It is widely used in packaging fields such as food, medicine, chemicals and daily necessities. The bonded aluminum and plastic are difficult to separate, resulting in millions of tons of aluminum-plastic composite materials such as toothpaste skins, food retort ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/26C08J11/20C22B7/00C22B21/00
CPCY02P10/20Y02W30/62
Inventor 张保坦李茹陈修宁王公应贾树勇王红丹
Owner CHANGZHOU INST OF CHEM
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