Unlock instant, AI-driven research and patent intelligence for your innovation.

Separating and recovering method of the priming, aluminum coating layer and the protecting film on the plastic basal body

A plastic substrate, aluminum coating technology, applied in the direction of plastic recycling, coating, recycling technology, etc., can solve the problem of no recycling method

Inactive Publication Date: 2009-09-23
ZHEJIANG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase in the number of scrapped cars every year, the number of scrapped car lampshades is also considerable. If the plastic of the lampshades can be recycled, it will have great significance for environmental protection and resource utilization, but there is no effective recycling method at present.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Take 5 car lampshades, immerse them in 10% nitric acid aqueous solution at room temperature for 10 seconds, take them out and rinse with water to remove the protective film and expose the aluminum coating; then soak the lampshades at room temperature with a mass percent of 60% Sodium hydroxide (or potassium hydroxide) aqueous solution, after the aluminum coating is dissolved, take it out, rinse it with water, and dry it naturally; finally, soak the lampshade in methanol at room temperature for 10 minutes to soften the primer and partially dissolve it , and finally rinse with water to remove the primer on the plastic substrate.

Embodiment 2

[0012] Take 5 car lampshades, immerse them in 15% nitric acid aqueous solution at room temperature for 6 seconds, take them out and rinse with water to remove the protective film and expose the aluminum coating; then soak the lampshades at room temperature with 50% mass percent Sodium hydroxide (or potassium hydroxide) aqueous solution, after the aluminum coating is dissolved, take it out, rinse it with water, and let it dry naturally; finally, soak the lampshade in methanol at room temperature for 20 minutes to soften the primer and partially dissolve it , and finally rinse with water to remove the primer on the plastic substrate.

Embodiment 3

[0014] Take 5 car lampshades, immerse them in 20% nitric acid aqueous solution at room temperature for 2 seconds, take them out and rinse with water to remove the protective film and expose the aluminum coating; then soak the lampshades at room temperature with 40% by mass Sodium hydroxide (or potassium hydroxide) aqueous solution, after the aluminum coating is dissolved, take it out, rinse it with water, and let it dry naturally; finally, soak the lampshade in methanol at room temperature for 30 minutes to soften the primer and partially dissolve it , and finally rinse with water to remove the primer on the plastic substrate.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a separation-recovery method for priming paint, aluminum coating and protective film on plastic substrate. The plastic part is dipped in nitric acid solution with weight percentage 10-20% and the dipping time is for 2-10s; it is fetched out and it is washed by water; the protective film can be removed and the aluminum coating is revealed; then the plastic part is dipped in sodium hydroxide or potassium hydroxide solution with weight percentage 40-60% and the aluminum coating is dissolved to be fetched out; it is washed by water and dried naturally; finally the plastic part is dipped in carbinol and the dipping time is for 10-30min to soften the priming paint and dissolve it partially; it is washed by water to remove the priming paint on the plastic substrate. The invention adopts simple and available method to separate and remove priming paint, aluminum coating and protective film and recovers the plastic part. In this way priming paint, aluminum coating and protective film on plastic substrate are disposed while useful plastic resource is recovered.

Description

technical field [0001] The invention relates to the treatment of solid waste, in particular to a method for separating and recycling primers, aluminum coatings and protective films on plastic substrates of automobile lampshades. Background technique [0002] The car lampshade is made of ABS plastic or PC plastic, and the decorative layer on the surface is composed of primer, aluminum film and protective film. With the increase in the number of scrapped cars every year, the number of scrapped car lampshades is also considerable. If the plastic of the lampshades can be recycled, it will have great significance for environmental protection and resource utilization, but there is currently no effective recycling method . Contents of the invention [0003] The present invention The object of the present invention is to provide a method for separating and recycling primers, aluminum coatings and protective films on the plastic base of automobile lampshades. [0004] The technic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29B17/00C08J11/00C09D9/00
CPCY02W30/62
Inventor 窦梅南碎飞
Owner ZHEJIANG UNIV