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Defoaming controllable multiphase foam system and preparation method thereof

A foam system and defoaming technology, applied in chemical instruments and methods, magnetic objects, magnetic liquids, etc., can solve problems such as inability to foam and defoam, and achieve good foam stability

Active Publication Date: 2019-02-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the current published patent documents and journal documents, more stable foam systems can be prepared, and the foam cannot be controlled to defoam

Method used

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  • Defoaming controllable multiphase foam system and preparation method thereof
  • Defoaming controllable multiphase foam system and preparation method thereof
  • Defoaming controllable multiphase foam system and preparation method thereof

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specific Embodiment approach

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] A defoaming controllable heterogeneous foam system, comprising the following components: octyl-beta-D-glucopyranoside (APG) 0.1-0.5wt%, cationic surfactant C 12 -3-C 12 2Br is 0.001-0.010wt%, core-shell Fe3 o 4 @SiO 2 0.1-0.75wt% of magnetic nanoparticles, 0.75-1.4wt% of silica nanoparticles, and the rest is water; wherein, the Fe 3 o 4 @SiO 2 and the total concentration of silica nanoparticles was 1.5 wt%.

[0034] The core-shell Fe 3 o 4 @SiO 2 A method for preparing magnetic nanoparticles, comprising the steps of:...

Embodiment 1

[0045] Defoaming and controllable multiphase foam system, first add 0.25g of nonionic surfactant APG and 0.003g of cationic surfactant C to 100mL of deionized water 12 C 3 C 12 Br 2 , then add Fe 3 o 4 @SiO 2 The nanoparticle concentration is 0.1g, the silica nanoparticle is 1.4g, and stirred at a high speed of 8000rmp for 3 minutes to form a stable multiphase foam system.

[0046] About 370mL of foam can be produced, and the half-life of the foam is about 4100s in the absence of a magnetic field. Compared with Comparative Example 2, it can be seen that the foam has better stability. Under the action of 0.4 Tesla magnetic field (NdFeB magnet), the foam system can completely defoam within 90s. Compared with Comparative Example 1, it can be seen that the foam is magnetically responsive and can rapidly defoam under the action of a magnetic field. Example 2:

Embodiment 2

[0047] Defoaming and controllable multiphase foam system, first add 0.1g nonionic surfactant APG, 0.003g cationic surfactant C to 100mL deionized water 12 C 3 C 12 Br 2 , then add Fe 3 o 4 @SiO 2 The nanoparticle concentration is 0.3g, the silica nanoparticle is 1.2g, and stirred at a high speed of 8000rmp for 3 minutes to form a stable multiphase foam system.

[0048] About 370mL of foam can be produced, and the half-life of the foam is about 4100s in the absence of a magnetic field. Compared with Comparative Example 2, it can be seen that the foam has better stability. Under the action of 0.4 Tesla magnetic field (NdFeB magnet), the foam system can completely defoam within 82s. Compared with Comparative Example 1, it can be seen that the foam is magnetically responsive and can rapidly defoam under the action of a magnetic field. Example 3:

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Abstract

The present invention relates to a heterogeneous foam system, in particular to a defoaming controllable multiphase foam system and a preparation method thereof, comprising the following components: octyl-beta-D-glucopyranoside (APG) 0.1-0.5wt%, Non-magnetic cationic surfactant C 12 -3-C 12 2Br is 0.001‑0.010wt%, core-shell Fe 3 o 4 @SiO 2 0.1-0.75wt% of magnetic nanoparticles, 0.75-1.4wt% of silica nanoparticles, and the rest are water; wherein, the Fe 3 o 4 @SiO 2 and the total concentration of silica nanoparticles was 1.5 wt%. In addition to good foam stability, the present invention also has magnetic responsiveness, and can control the defoaming time of the foam by applying an external magnetic field, combined with the amount of magnetic particles in the foam system, and realize rapid defoaming of the foam, which can be applied to both Industrial production occasions that require a stable foam system and controllable defoaming in a short period of time.

Description

technical field [0001] The invention relates to a multiphase foam system, in particular to a defoaming controllable multiphase foam system and a preparation method thereof. Background technique [0002] Foam is a dispersion system formed by dispersing insoluble gas in liquid, in which the insoluble gas is used as the dispersed phase and the liquid is used as the dispersion medium. With the widespread use of surfactants, foam systems have gradually received widespread attention. Foam systems are now widely used in food, cosmetics, oil extraction, mineral extraction, fire fighting and other fields. Emerging industrial applications generally use foam as an intermediate to produce porous materials, and are also used to produce thermal insulation materials and low specific gravity materials, as well as in medicine to produce artificial implants and scaffolds for drug delivery and tissue engineering. [0003] Foam is a thermodynamically unstable system. The instability of foam c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/18B01F17/56H01F1/44C09K23/18C09K23/56
CPCH01F1/445C09K23/017
Inventor 王继乾薛国彬田宝学徐海李兆敏孙亚伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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