Grafted copolymer with modified amino and preparation method and application thereof

A graft copolymer and amino modification technology, applied in the field of amino modified graft copolymers, can solve the problems of material becoming brittle and brittle, reducing the effect of repeated use and service life of materials, and achieving the benefits of recycling, fast recycling, etc. The effect of adsorption rate and good extraction efficiency

Inactive Publication Date: 2013-06-12
上海迈坦技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the GMA grafting ratio increases, the material tends to become brittle and brittle
The change of t

Method used

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  • Grafted copolymer with modified amino and preparation method and application thereof
  • Grafted copolymer with modified amino and preparation method and application thereof
  • Grafted copolymer with modified amino and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1 Pre-irradiation emulsion grafting GMA to prepare adsorption material

[0061] 1. In the air, irradiate PE / PP non-woven fabric, PE non-woven fabric, PE fiber, PE film and cotton cloth with electron beam at room temperature, and the irradiation dose is 30kGy.

[0062] 2. Add 378mL of distilled water, 2.0mL of Tween-20, and 20mL of glycidyl methacrylate (GMA) into the Erlenmeyer flask, and stir for 1 hour to disperse the GMA evenly. Add 4.3 g of each of the above-mentioned polymer substrates that have been pre-irradiated therein, blow nitrogen gas for 15 minutes to remove oxygen, and seal. The system was stirred and reacted in a water bath at 55°C for 15 minutes. The grafted material was taken out, extracted with acetone for 48 hours, and then placed in a vacuum desiccator for 24 hours. The grafting rate calculated by weighing method is 170% for PE / PP non-woven fabric, 195% for PE non-woven fabric, 150% for PE fiber, 100% for PE film, and 50% for cotton cloth. ...

Embodiment 2

[0066] Example 2 Pre-irradiation emulsion grafting GMA to prepare adsorption material

[0067]1. Prepare GMA-grafted PE non-woven fabric according to steps 1-3 of Example 1.

[0068] 2. Similarly, weigh 6.3g of grafted PE non-woven fabric, add it to the 1,4-dioxane solution of triethylenetetramine (TETA) with a volume concentration of 50%, and place it at a constant temperature of 80°C React in a water bath for 2h. The non-woven fabric washed with water was transferred to a vacuum oven at 60°C and dried to a constant weight to obtain a TETA modified material. Infrared detection was carried out on the modified material, and the results of the characteristic absorption wavenumber of the amine group were the same as figure 1 (c).

Embodiment 3

[0069] Example 3 Pre-irradiation emulsion grafting GMA to prepare adsorption material

[0070] 1. Prepare GMA-grafted PE non-woven fabric according to steps 1-3 of Example 1.

[0071] 2. Similarly, weigh 6.3g of grafted PE non-woven fabric, add it to an aqueous solution of diethylamine (DEA) with a volume concentration of 50%, and place it in a constant temperature water bath at 30°C for 5 hours. The non-woven fabric washed with water was transferred to a vacuum oven and dried at 60° C. to a constant weight to obtain a DEA modified material. Infrared detection was carried out on the modified material, and the results of the characteristic absorption wavenumber of the amine group were the same as figure 1 (c).

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PUM

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Abstract

The invention discloses a grafted copolymer with modified amino and a preparation method and application thereof. The preparation method includes the step of enabling the grafted copolymer of vinyl type monomers containing epoxy groups in solvent to carry out epoxide ring-opening reaction with amine compound. The invention further discloses a method for utilizing the grafted copolymer with the modified amino to extract precious metal and/or heavy metal. The method includes the steps of mixing the grafted copolymer with the modified amino with a water body containing the precious metal and/or the heavy metal and then stirring. The grafted copolymer with the modified amino is capable of adsorbing the precious metal in solution, has high adsorption rate and longer service life compared with adsorbing materials in the prior art, and is favorable for being recycled.

Description

technical field [0001] The invention relates to an amino-modified graft copolymer, a preparation method and an application thereof. Background technique [0002] With the rapid development of electronic industry technology and the continuous expansion of the demand market for electronic products, the number of electronic products continues to grow rapidly, and accordingly, the amount of electronic waste also rises rapidly. The world produces millions of tons of electronic waste every year, and it increases at a rate of 16% to 28% every five years, which is three times faster than the growth rate of total waste. It has become the fastest growing waste in the world. E-waste is rich in metals. According to statistics, 1 ton of electronic boards collected randomly contains about 272kg of plastic, 130kg of copper, 0.45kg of gold, 41kg of iron, 30kg of lead, 20kg of tin, 18kg of nickel and 10kg of antimony. Although the content of precious metals such as gold is relatively low c...

Claims

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Application Information

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IPC IPC(8): D06M14/28D06M14/22D06M13/332D06M13/358B01J20/26B01J20/30C22B3/24D06M101/20D06M101/06
CPCY02P10/20
Inventor 马红娟李景烨王敏姚思德虞鸣
Owner 上海迈坦技术发展有限公司
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