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Defoaming-controllable multiphase foam system and preparation method thereof

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

Active Publication Date: 2017-01-11
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

Examples

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specific Embodiment approach

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] A controllable defoaming multiphase 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 Fe 3 O 4 @SiO 2 The magnetic nanoparticles are 0.1-0.75wt%, the silica nanoparticles are 0.75-1.4wt%, and the rest is water; wherein the Fe 3 O 4 @SiO 2 And the total concentration of silica nanoparticles is 1.5wt%.

[0034] Core-shell Fe 3 O 4 @SiO 2 The preparation method of magnetic nanoparticles includes the following st...

Embodiment 1

[0045] Controllable defoaming multiphase foam system, add 0.25g nonionic surfactant APG and 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 concentration of nanoparticles is 0.1g, silica nanoparticles are 1.4g, and 8000rpm is stirred at high speed for 3 minutes to form a stable multiphase foam system.

[0046] It can produce about 370mL of foam. In the absence of a magnetic field, the half-life of foam discharge is about 4100s. 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 has magnetic responsiveness and can quickly defoam under the action of a magnetic field. Example 2:

Embodiment 2

[0047] Controllable defoaming multiphase foam system, add 0.1g non-ionic surfactant APG and 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 concentration of nanoparticles is 0.3g, silica nanoparticles are 1.2g, and 8000rpm is stirred at high speed for 3 minutes to form a stable multiphase foam system.

[0048] It can produce about 370mL of foam. In the absence of a magnetic field, the half-life of foam discharge is about 4100s. 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 has magnetic responsiveness and can quickly defoam under the action of a magnetic field. Example 3:

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Abstract

The invention relates to multiphase foam systems, in particular to a defoaming-controllable multiphase foam system and a preparation method thereof. The foam system is prepared from 0.1-0.5 wt% of octyl-beta-D-glucopyranoside (APG), 0.001-0.010 wt% of nonmagnetic cationic surface active agent C12-3-C12.2Br, 0.1-0.75 wt% of core-shell Fe3O4@SiO2 magnetic nano-particles, 0.75-1.4 wt% of silicon dioxide nano-particles and the balance water, wherein the total concentration of the Fe3O4@SiO2 nano-particles and the silicon dioxide nano-particles is 1.5 wt%. The foam system has good foam stability and magnetic responsiveness, defoaming time of foam can be controlled through an external magnetic field in combination with the content of magnetic particles in the foam system, rapid defoaming is realized, and the foam system can be applied to an industrial production occasion requiring a stable foam system and controllable defoaming within a short 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 in which insoluble gas is dispersed in a 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 exploration, mineral exploration, fire fighting and other fields. Emerging industrial applications generally use foam as an intermediate to produce porous materials, as well as heat insulating materials and low specific gravity materials, as well as artificial implants and stents for drug delivery and tissue engineering in medicine. [0003] Foam is a thermodynamically unstable system. The instability of the foam comes from its high surface energy...

Claims

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Application Information

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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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