A kind of hyperbranched polymer based on carbon nanotube and preparation method thereof

A technology of hyperbranched polymers and carbon nanotubes, which is applied in drilling compositions, chemical instruments and methods, etc., can solve problems such as poor effect, achieve broad application prospects, outstanding economic benefits, and improve microscopic oil displacement efficiency. Effect

Active Publication Date: 2022-04-19
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hyperbranched polymer oil displacement agents are usually spherical hyperbranched polymers, which are less effective when applied to heterogeneous reservoirs

Method used

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  • A kind of hyperbranched polymer based on carbon nanotube and preparation method thereof
  • A kind of hyperbranched polymer based on carbon nanotube and preparation method thereof
  • A kind of hyperbranched polymer based on carbon nanotube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 8g of carbon nanotubes to a 500mL three-necked flask, then add 80g of concentrated nitric acid, stir in a 45°C water bath for 12 hours, filter and wash with suction to obtain carboxylated carbon nanotubes; add 7g of carboxylated carbon nanotubes to a 500mL three-necked flask tube, add 100g of hydrogen peroxide, continue to oxidize in a water bath at 45°C for 12 hours, filter with suction, wash, and dry to obtain hydroxylated carbon nanotubes;

[0032] Add 60g of diformamide and 6g of hydroxylated carbon nanotubes into a 500mL three-necked bottle, then add 60g of aminopropyltrimethoxysilane, and stir in a water bath at 45°C for 12h to ensure the hydroxylated carbon nanotubes and silane coupling agent. Fully react, after the reaction is finished, it is filtered, washed and dried;

[0033] In a water bath at 35°C, disperse 5g of carbon nanotubes modified by a silane coupling agent into a three-necked bottle containing 60g of diformamide, add 40g of methyl acrylate drop...

Embodiment 2

[0038] Add 8g of carbon nanotubes to a 500mL three-necked flask, then add 80g of concentrated nitric acid, stir in a 45°C water bath for 12 hours, filter and wash with suction to obtain carboxylated carbon nanotubes; add 7g of carboxylated carbon nanotubes to a 500mL three-necked flask tube, add 100g of hydrogen peroxide, continue to oxidize in a water bath at 45-50°C for 12 hours, suction filter, wash and dry to obtain hydroxylated carbon nanotubes;

[0039] Add 60g of diformamide and 6g of hydroxylated carbon nanotubes into a 500mL three-necked flask, then add 50g of aminopropyltriethoxysilane and 20g of aminopropyltrimethoxysilane, and stir in a water bath at 50°C for 12h to ensure that the hydroxylated carbon nanotubes Full reaction of carbon nanotubes and silane coupling agent;

[0040] At 40°C in a water bath, disperse 5g of carbon nanotubes modified by a silane coupling agent into a three-necked bottle containing 60g of diformamide, add 40g of methyl acrylate dropwise, ...

Embodiment 3

[0045] Add 8g of carbon nanotubes to a 500mL three-necked flask, then add 80g of concentrated nitric acid, stir in a water bath at 50°C for 12 hours, filter and wash with suction to obtain carboxylated carbon nanotubes; add 7g of carboxylated carbon nanotubes to a 500mL three-necked flask tube, add 100g of hydrogen peroxide, continue to oxidize in a water bath at 50°C for 12h, suction filter, wash, and dry to obtain hydroxylated carbon nanotubes;

[0046] Add 60g of diformamide and 6g of hydroxylated carbon nanotubes into a 500mL three-neck flask, then add 70g of aminopropyltriethoxysilane, and stir in a water bath at 50°C for 12h to ensure that the hydroxylated carbon nanotubes and silane coupling agent an adequate response;

[0047] In a water bath at 35°C, disperse 5g of carbon nanotubes modified by a silane coupling agent into a three-necked bottle containing 60g of diformamide, add 40g of methyl acrylate dropwise, stir in a sealed environment, and conduct Michael Additio...

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Abstract

The invention provides a method for preparing a hyperbranched polymer based on carbon nanotubes, comprising the following steps: step 1, taking hydroxylated carbon nanotubes, grafting a silane coupling agent on its surface, and the silane coupling agent contains terminal amino group; step 2, carry out at least one hybridization treatment to the product in step 1, and the hybridization treatment process is as follows: graft methyl acrylate and organic diamine on the product of step 1 in sequence; step 3, take step 2 The product in , is capped with maleic anhydride; step 4, take 0.1 parts by weight of the product in step 3, and carry out free radical copolymerization in water phase with 20-40 parts by weight of acrylamide. The hyperbranched polymer of the present invention, whose polymerization main body is one-dimensional carbon nanotubes, can pass through smaller-sized pore throats compared with traditional hyperbranched polymers; at the same time, the synthesis method of the present invention is simple, highly repeatable, and Energy saving and environmental protection, strong industrialization.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a hyperbranched polymer based on carbon nanotubes and a preparation method thereof. Background technique [0002] The heterogeneity of continental sedimentary oilfields is generally stronger than that of marine sedimentary oilfields, so the former is more difficult to recover than the latter, and most oilfields in my country are continental sedimentary oilfields, so enhanced oil recovery is a necessary means to enhance oil recovery. Enhanced oil recovery, also known as tertiary oil recovery, refers to natural gas oil recovery, chemical oil recovery, thermal oil recovery and microbial oil recovery. Among them, chemical oil recovery is also called chemical flooding. As an efficient means of recovery, it mainly includes surfactant flooding, polymer flooding, foam flooding, alkali flooding and multi-component flooding. The basic principle of chemical flooding i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/56C09K8/588
CPCC08F292/00C09K8/588C08F220/56
Inventor 芶瑞蒲万芬刘锐张涛
Owner SOUTHWEST PETROLEUM UNIV
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