Method for recycling waste epoxy resin

A technology of epoxy resin and recycling method, which is applied in the direction of plastic recycling, recycling technology, reagents, etc., can solve the problems of difficult recycling of waste epoxy resin, affecting the mechanical properties of materials, and serious environmental pollution, etc., and achieves the improvement of mechanical strength and protection The effect of improving the combination of environment and interface

Inactive Publication Date: 2012-05-23
杭州鑫至投资管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a recycling method for waste epoxy resins in view of the difficulty in recycling waste epoxy resins, the serious environmental pollution, and the impact on the mechanical properties of materials when used as fillers in new epoxy resins.

Method used

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  • Method for recycling waste epoxy resin

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Choose waste epoxy insulators, crush them with a pulverizer, pass through a sieve with a pore size of 2.5 microns, and select waste epoxy resin particles with a particle diameter of less than 2.5 microns (re-grind those larger than 2.5 microns), and put them into The mass ratio of TEOS: KH560 is 1:1, and the mass ratio of TEOS: absolute ethanol is 1:1.5, add 1.5% hydrochloric acid, stir at room temperature for 5 minutes, take out and drain, and place under atmospheric conditions After more than 48 hours, mix the waste epoxy resin particles with the mass content of waste particles of 0%, 3%, 6% and 10% respectively with the new epoxy resin particles, and then add a curing agent to cure and form. After the obtained material is tested for mechanical properties, the results of its mechanical properties are as follows: figure 1 Shown (the percentage content of the label in the figure is the mass percentage content of the pulverized particles of waste epoxy resin added). Whe...

Embodiment 2

[0027] Select waste and old epoxy insulators, use a pulverizer to crush them, pass through a sieve with an aperture of 2.5 microns, select waste and old epoxy resin particles with a particle diameter of less than 2.5 microns, and put them into TEOS:KH560 with a mass ratio of 4:4~ 6. Add 1.5% p-toluenesulfonic acid to a solution with a ratio of TEOS and absolute ethanol of 1:2~5, stir at room temperature for 5 minutes, take it out and drain it, and place it under atmospheric conditions for more than 48 hours. The waste epoxy resin particles with the mass content of the waste particles being 0 and 6% respectively are combined with the new epoxy resin particles and then cured and formed. The high resistance meter tests the volume resistivity of the prepared materials, and the volume resistivity of the material with a waste and old epoxy resin content of 6% is basically close to that of a waste and old epoxy resin content of 0% (new product), both within 10 15 Ω·cm.

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Abstract

The invention discloses a method for recycling a waste epoxy resin. The method comprises steps of crushing the waste epoxy resin, performing surface treatment on the waste epoxy resin particles, and compounding and curing the waste epoxy resin particles and the new epoxy resin. In the method, the material prepared by the steps of crushing the waste epoxy resin, performing special surface treatment on the crushed waste epoxy resin by using a silane coupling agent, ethyl orthosilicate, p-toluenesulfonic acid (or hydrochloric acid) and the like, and finally compounding and curing the waste epoxyresin powder particles subjected to the surface treatment and the new epoxy resin has higher mechanical property than the new epoxy resin, and the insulating performance of the prepared material is not obviously changed compared with that of the material prepared from the new epoxy resin. The method has the advantages of simple process, mild reaction condition and capability of effectively recycling the waste epoxy resin.

Description

technical field [0001] The invention relates to the recycling technology of waste resin, in particular to a recycling method of waste epoxy resin. Background technique [0002] Epoxy resin is an important class of thermosetting resin with excellent chemical stability, corrosion resistance, adhesion and mechanical strength. Wide range of applications. At present, the production capacity of epoxy resin in the world has exceeded 1.5 million tons. With the development of my country's economy, my country's demand for epoxy resin is also increasing. With the substantial increase in the application of epoxy resin products, the resulting waste epoxy resin waste products also increase. However, epoxy resin is a kind of thermosetting resin, so it is very difficult to recycle waste epoxy resin. At present, landfill is the main treatment method for waste epoxy resin. Long-term continuous landfill will inevitably increase the burden on the environment and cause environmental pollutio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/04C08L63/00C08G59/42
CPCY02P20/143Y02W30/62
Inventor 傅雅琴徐龙彬傅维远
Owner 杭州鑫至投资管理有限公司
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