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Defoaming agent capable of defoaming quickly

A defoamer and rapid technology, applied in the directions of foam dispersion/prevention, chemical instruments and methods, liquid degassing, etc., can solve the problems of affecting the basic properties of the foaming system, poor defoaming effect, and poor inhibition performance. , to achieve the effect of strong defoaming ability, rapid defoaming and good thermal stability

Inactive Publication Date: 2017-12-08
宣城市聚源精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of defoamers, such as organosiloxane, polyether, silicon and ether graft, amine, imine and amide, some of which will affect the basic properties of the foaming system, the effect of defoaming is not good, and the inhibition Poor performance, slow defoaming speed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A defoaming agent with rapid defoaming, which is made of the following ingredients in parts by weight: acrylic grafted polysiloxane 25, highly active nano zinc oxide 3, emulsifier 2, polyethylene glycol 15, deionized water 80 .

[0015] Further, the preparation method of the acrylic grafted polysiloxane is as follows: uniformly disperse polysiloxane into carbon tetrachloride, prepare a polysiloxane solution with a mass fraction of 12%, and then add polysiloxane to polysiloxane Add 5% of its mass of acrylic acid to the solution, then heat to 110℃, stir at 1200r / min for 40min, then quickly add 20% of acrylic alcohol by mass of acrylic acid, adjust the temperature to 85℃, keep for 15min, and then rotate at 120r / min Stir for 2 hours, let stand for 6 hours, then remove carbon tetrachloride to obtain a reaction mixture. After mixing the reaction mixture with deionized water in a mass ratio of 1:2, stir at 3000r / min for 30 minutes, and then stand for 2 hours , And then separated...

Embodiment 2

[0022] A defoaming agent with rapid defoaming, which is made of the following ingredients in parts by weight: acrylic grafted polysiloxane 30, highly active nano zinc oxide 5, emulsifier 6, polyethylene glycol 18, deionized water 100 .

[0023] Further, the preparation method of the acrylic grafted polysiloxane is as follows: uniformly disperse polysiloxane into carbon tetrachloride, prepare a polysiloxane solution with a mass fraction of 12%, and then add polysiloxane to polysiloxane Add 5% of its mass of acrylic acid to the solution, then heat to 110℃, stir at 1200r / min for 40min, then quickly add 20% of acrylic alcohol by mass of acrylic acid, adjust the temperature to 85℃, keep for 15min, and then rotate at 120r / min Stir for 2 hours, let stand for 6 hours, then remove carbon tetrachloride to obtain a reaction mixture. After mixing the reaction mixture with deionized water in a mass ratio of 1:2, stir at 3000r / min for 30 minutes, and then stand for 2 hours , And then separate...

Embodiment 3

[0030] A defoaming agent with rapid defoaming, which is made of the following ingredients in parts by weight: acrylic grafted polysiloxane 28, highly active nano zinc oxide 4, emulsifier 3, polyethylene glycol 16, deionized water 90 .

[0031] Further, the preparation method of the acrylic grafted polysiloxane is as follows: uniformly disperse polysiloxane into carbon tetrachloride, prepare a polysiloxane solution with a mass fraction of 12%, and then add polysiloxane to polysiloxane Add 5% of its mass of acrylic acid to the solution, then heat to 110℃, stir at 1200r / min for 40min, then quickly add 20% of acrylic alcohol by mass of acrylic acid, adjust the temperature to 85℃, keep for 15min, and then rotate at 120r / min Stir for 2 hours, let stand for 6 hours, then remove carbon tetrachloride to obtain a reaction mixture. After mixing the reaction mixture with deionized water in a mass ratio of 1:2, stir at 3000r / min for 30 minutes, and then stand for 2 hours , And then separated...

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PUM

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Abstract

The invention discloses a defoaming agent capable of defoaming quickly. The defoaming agent relates to the field of defoaming agents, and is prepared from the following components: acrylic grafting polysiloxane, high-activity nano-zinc oxide, an emulsifying agent, polyethylene glycol and deionized water. The defoaming agent prepared by the invention has low surface tension, high defoaming capacity, quickness in defoaming, good heat stability, chemical and physiological inertia, and favorable defoaming performance on most of foaming media.

Description

Technical field [0001] The invention belongs to the field of defoamers, and specifically relates to a defoamer with rapid defoaming. Background technique [0002] Foam is a thermodynamically unstable system and cannot be stable. The thermodynamic instability of foam is due to the large decrease in the total liquid surface area of ​​the system after the bubble breaks, and thus the system energy (free energy) is greatly reduced. Anti-foaming agent, also known as anti-foaming agent, will produce many harmful foams in the process of industrial production, and it is necessary to add anti-foaming agent. It is widely used to remove harmful foam produced in the production process of latex, textile sizing, food fermentation, biomedicine, coating, petrochemical, papermaking, industrial cleaning and other industries. There are many types of defoaming agents, such as organosiloxane, polyether, silicon and ether grafts, containing amines, imines and amides, and some will affect the basic pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
CPCB01D19/0409B01D19/0404
Inventor 程聚光
Owner 宣城市聚源精细化工有限公司
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