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A method for preparing modified nano-plastics from waste plastics

A technology of waste plastics and nano-plastics, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of non-recyclable, labor-intensive, environmental pollution, etc., and achieve the effect of increasing compactness, improving quality, and reducing environmental pollution

Active Publication Date: 2015-11-04
SUZHOU XIANGYUAN SPEICAL FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the processing of thermosetting plastics, a cross-linked structure is formed between macromolecules, and its products are insoluble and infusible. For a long time, people have always believed that waste thermosetting plastics cannot be recycled, so they are treated as garbage, which not only causes The environment pollutes and consumes a lot of manpower. The present invention proposes a method for preparing modified nano-plastics by using waste plastics, which solves the problem of environmental pollution and reuses resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Pulverization: Pulverize thermosetting waste plastics into fine plastic particles of 50-80um mesh. The particle size of the pulverized plastic fine particles is suitable, and there is no need to use fine instruments for processing.

[0023] 2) Impurity removal: Clean the fine plastic particles with a mixture of ethanol and ether, acetone, and deionized water in an industrial ultrasonic machine for 15 minutes, and then wash them twice with 120# gasoline and deionized water. Remove impurities to remove water-soluble and fat-soluble substances on the surface of thermosetting waste plastics, and improve the quality of thermosetting waste plastics.

[0024] 3) Catalytic hydrocracking: Put the cleaned plastic fine particles into the reactor, 450 ° C, under the condition of catalyst and stirring for 30 minutes to hydrocrack, 80% of the small molecule liquid can be obtained, of which the small molecule liquid The monomer undergoes polyaddition reaction to become a liquid pla...

Embodiment 2

[0035] Embodiment 2: the rest are the same as the above-mentioned embodiment 1, the difference is that in step 6), first vacuum cooling for 3h, and then cooling for 3h, in this embodiment, the flame retardant effect of the obtained plastic is slightly worse than that of embodiment 1, but Al The mixture of (OH)3, octabromoether and Mg(OH)2 has low consumption and does not affect the use effect.

Embodiment 3

[0036]Embodiment 3: the rest are the same as the above-mentioned embodiment 1, the difference is that no catalyst is used in step 3), the hydrocracking efficiency is significantly reduced, and only 30% of the small molecule liquid can be obtained in the same time, and the amount is significantly reduced .

[0037] It can be seen from the actual application of this embodiment that the present invention processes the waste thermosetting plastics through six steps of crushing, impurity removal, catalytic hydrocracking, modification, vacuum degassing, and shaping, not only reusing waste, but also purifying the waste thermosetting plastics. , reduce environmental pollution, increase the heat resistance, wear resistance and flame retardancy of recycled plastics, and have a wide range of market applications. Water-soluble and fat-soluble substances on the surface of thermosetting waste plastics can improve the quality of thermosetting waste plastics. During modification, adding coupl...

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Abstract

The invention belongs to the field of machine manufacturing, and specifically relates to a method for preparing nano-plastic by waste plastic. The method comprises the following steps: carrying out crushing, impurity removal, catalytic hydrocracking, modification, vacuum defoaming and sizing on waste plastic; adding 1-2% of a coupler, 1-2% of a compatilizer and 5-10% of inorganic filer to mix, stir and modify, wherein the coupler is amino silane, the compatilizer is maleic anhydride and the inorganic filer is superfine talcum powder; the content of the superfine talcum powder is 10-30%. After a series of treatments to thermoset waste plastic, not only are wastes recycled, but also the thermoset waste plastic is purified, thereby reducing the environmental pollution, and increasing heat resistance, wear resistance and flame resistance of reproduced plastic. The method is wide in market application.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to a method for preparing modified nano-plastics by using waste plastics. Background technique [0002] Due to its many advantages, such as low price, high shear modulus and Young's modulus, good rigidity and high hardness, thermosetting plastics are widely used in the production of electrical and electronic industries, machinery, vehicle sliding components, sealing components and tableware. widely. However, during the processing of thermosetting plastics, a cross-linked structure is formed between macromolecules, and its products are insoluble and infusible. For a long time, people have always believed that waste thermosetting plastics cannot be recycled, so they are treated as garbage, which not only causes The environment is polluted and consumes a lot of manpower. The present invention proposes a method for preparing modified nano-plastics from waste plastics...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C08J11/10C08K13/06C08K9/06C08K9/04C08K5/09C08K3/34C08K3/32C08K3/02C08K3/26C08K3/22C08K5/06
CPCY02W30/62
Inventor 周建颜玉荣
Owner SUZHOU XIANGYUAN SPEICAL FINE CHEM
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