Polyamide and amine hybridized nanosilicon dioxide hyperbranched polymer and preparation method thereof

A nano-silica, hyperbranched polymer technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor hydrophilicity, low monomer conversion rate, low degree of dispersion, etc., and the method is simple , the principle is reliable, the effect of good temperature resistance

Active Publication Date: 2014-06-18
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a large number of documents show that due to the hydrophobic properties of silica, only silane coupling agents are used to form monom...

Method used

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  • Polyamide and amine hybridized nanosilicon dioxide hyperbranched polymer and preparation method thereof
  • Polyamide and amine hybridized nanosilicon dioxide hyperbranched polymer and preparation method thereof
  • Polyamide and amine hybridized nanosilicon dioxide hyperbranched polymer and preparation method thereof

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Embodiment 1

[0033] (1) Surface modification of nano-silica with coupling agent: Add 15.5g nano-silica and 200ml methanol into a three-neck bottle, disperse with ultrasonic vibration for 30min, add 25ml coupling agent and stir, at a temperature of 35 React at ℃ for 6 hours, wash with methanol, vacuum filter and dry to obtain surface-modified nano-silica;

[0034] (2) Preparation of polyamide-amine hybrid nano-silica: 1) Add 7.0g of nano-silica modified by KH-540 or KH-550 or KH-560, and 75ml of methanol into a three-necked bottle, ultrasonically oscillate Disperse for 30 minutes, stir and cool to 0°C, add 3.5ml of methyl acrylate dropwise into the three-neck flask, react at room temperature for 24 hours after the addition, wash with methanol, vacuum filter and dry, and the end group is an ester group 0.5-generation polyamide-amine hybrid nano-silica; 2) Add 5.0g of the substance obtained in 1) and 75ml of methanol into a three-necked bottle, disperse by ultrasonic oscillation for 30min, st...

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Abstract

The invention discloses a polyamide and amine hybridized nanosilicon dioxide hyperbranched polymer and a preparation method thereof. The preparation method of the polymer comprises the following steps of firstly, modifying the surface of nanosilicon dioxide by using a coupling agent; then, carrying out Michael addition reaction and amidation reaction on the modified nanosilicon dioxide by using ethylenediamine and methyl acrylate; finally, carrying out functional modification by using allyl glycidyl ether to obtain a functional polyamide and amine hybridized nanosilicon dioxide monomer, and initiating polymerization reaction on the functional polyamide and amine hybridized nanosilicon dioxide monomer, acrylamide, acrylic acid and a heat-resistant and salt-tolerant monomer by using a redox initiator or azobis(isobutylamidine) initiator. The hyperbranched polymer has a network structure with a polyamide and amine hybridized nanosilicon dioxide unit as a center, has excellent shear resistance, strong thickening property, heat resistance and salt tolerance, and is wide in adaptability and capable of being used as an oil displacement agent for increasing the recovery rate of raw oil in an oil field environment with a high mineralization degree and a wide temperature range; the preparation method of the polyamide and amine hybridized nanosilicon dioxide hyperbranched polymer is reliable in principle, simple and convenient to operate and wide in application prospect.

Description

technical field [0001] The invention relates to an inorganic nano silicon dioxide-organic macromolecule hyperbranched polymer and a preparation method thereof, belonging to the fields of new materials and oil field chemistry. Background technique [0002] As a non-renewable resource, petroleum occupies an irreplaceable strategic position in the fields of national security such as national defense and aerospace, industry, agriculture and daily life. However, in 2013, my country's dependence on foreign oil has exceeded 50%. Only by realizing the steady growth of my country's oil reserves can my country's energy security be guaranteed. So far, there are only a few newly discovered large oil fields in my country, and it takes a long time for new oil fields to form large-scale production capacity from exploration to development. Therefore, it is a feasible strategy to increase oil production on the basis of the development of existing oil fields. Program. Faced with the fact tha...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F220/56C08F220/06C08F4/40C08F4/04C08G83/00C09K8/588
Inventor 刘锐蒲万芬金发扬杨怀军尚晓培闫召鹏
Owner SOUTHWEST PETROLEUM UNIV
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