CN111467843A - Powder defoaming agent and preparation method thereof - Google Patents
Powder defoaming agent and preparation method thereof Download PDFInfo
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- CN111467843A CN111467843A CN202010118980.0A CN202010118980A CN111467843A CN 111467843 A CN111467843 A CN 111467843A CN 202010118980 A CN202010118980 A CN 202010118980A CN 111467843 A CN111467843 A CN 111467843A
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- defoaming agent
- mother liquor
- spray drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
Abstract
The invention discloses a powder defoaming agent and a preparation method thereof, wherein the powder defoaming agent comprises the following components in percentage by weight: 45-55% of polyether defoaming mother liquor, 28-38% of organic silicon defoaming agent mother liquor, 7% of quicklime, 9.8% of water and 0.2% of flame retardant, wherein the total weight percentage of the components is 100%, and the preparation method comprises the following steps: step 1, taking 550 parts by weight of polyether type defoaming agent mother liquor and 380 parts by weight of organic silicon defoaming agent mother liquor, adding 70 parts by weight of mixed solution of quick lime and 98 parts by weight of water, adding 2 parts by weight of fire retardant, keeping stirring, and regulating the pH value of the mixed solution to 6.5-8.3; step 2, setting the temperature of the spray drying process to be 95-110 ℃; step 3, adding 30-50 parts of fumed silica in the spray drying process of the mixed solution obtained in the step 1; step 4, cooling the product obtained by spray drying again; and 5, bagging the product. The invention has the advantages of uniform product fineness, stable performance, excellent defoaming rate and high defoaming rate, and can greatly reduce the gas content of the cement-based material under the condition of low doping amount.
Description
Technical Field
The invention relates to the technical field of defoaming agents specially used for cement-based material systems, in particular to a powder defoaming agent and a preparation method thereof.
Background
In the cement-based material system, a large amount of bubbles are introduced due to stirring and some chemical reactions in the process of adding water and stirring when the cement-based material system is used, and the residual bubbles can influence the strength, durability and appearance quality of the hardened material, so different amounts of antifoaming agents are generally required to be added into the production formula of the cement-based material, and the air content of the cement-based material is reduced so as to reduce the influence of the bubbles on the material performance. At present, the industry mostly adopts the defoaming agent imported from abroad, and part of manufacturers in China also start the research work of the defoaming agent, because the material properties of various liquid defoaming agents are obviously different, and meanwhile, the performance of the powder defoaming agent produced by different spray drying processes is greatly different, and the control difficulty of the product quality is high. The industry is always lack of defoaming agent products capable of being fast and stable, and stable mass production can be realized, so that the comprehensive performance of the cement-based material is further improved.
Disclosure of Invention
The invention aims to provide a powder defoaming agent and a preparation method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a powder defoaming agent comprises the following components in percentage by weight:
45-55% of polyether type defoaming mother liquor
28 to 38 percent of organic silicon defoamer mother liquor
7 percent of quicklime
9.8 percent of water
0.2 percent of flame retardant
The total weight percentage of the components is 100 percent.
Preferably, the proportion of the polyether defoaming mother liquor is 45%, 50% or 55%.
Preferably, the proportion of the silicone defoamer mother liquor is one of 28%, 33% or 38%.
A preparation method of a powder defoaming agent comprises the following steps:
step 1, taking 550 parts by weight of polyether type defoaming agent mother liquor and 380 parts by weight of organic silicon defoaming agent mother liquor, adding 70 parts by weight of mixed solution of quick lime and 98 parts by weight of water, adding 2 parts by weight of fire retardant, keeping stirring, and regulating the pH value of the mixed solution to 6.5-8.3;
step 2, setting the temperature of the spray drying process to be 95-110 ℃;
step 3, adding 30-50 parts of fumed silica in the spray drying process of the mixed solution obtained in the step 1;
step 4, cooling the product obtained by spray drying again;
and 5, bagging the product.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has the advantages of uniform product fineness, stable performance, excellent defoaming rate and high defoaming rate, and can greatly reduce the gas content of the cement-based material under low doping amount;
2. the product has good anti-caking and anti-moisture absorption performances, is easy to disperse after being bagged and laminated, and is convenient to use;
3. the invention has the advantages of easily obtained raw materials of the product, controllable production process and convenient operation, thereby realizing stable mass production.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: a powder defoaming agent comprises the following components in percentage by weight:
45 percent of polyether type defoaming mother liquor
38 percent of organic silicon defoamer mother liquor
7 percent of quicklime
9.8 percent of water
0.2 percent of flame retardant
The total weight percentage of the components is 100 percent.
A preparation method of a powder defoaming agent comprises the following steps:
step 1, taking 450 parts of polyether type defoaming agent mother liquor and 380 parts of organic silicon defoaming agent mother liquor by weight, adding 70 parts of quick lime and 98 parts of water mixed solution, adding 2 parts of flame retardant, keeping stirring, and regulating the pH value of the mixed solution to 6.5-8.3;
step 2, setting the temperature of the spray drying process to be 95-110 ℃;
step 3, adding 30-50 parts of fumed silica in the spray drying process of the mixed solution obtained in the step 1;
step 4, cooling the product obtained by spray drying again;
and 5, bagging the product.
Example 2
The invention provides a technical scheme that: a powder defoaming agent comprises the following components in percentage by weight:
polyether type defoaming mother liquor 50%
33 percent of organic silicon defoamer mother liquor
7 percent of quicklime
9.8 percent of water
0.2 percent of flame retardant
The total weight percentage of the components is 100 percent.
A preparation method of a powder defoaming agent comprises the following steps:
step 1, taking 500 parts of polyether type defoaming agent mother liquor and 330 parts of organic silicon defoaming agent mother liquor according to weight percentage, adding 70 parts of mixed solution of quicklime and 98 parts of water, adding 2 parts of flame retardant, keeping stirring, and regulating the pH value of the mixed solution to 6.5-8.3;
step 2, setting the temperature of the spray drying process to be 95-110 ℃;
step 3, adding 30-50 parts of fumed silica in the spray drying process of the mixed solution obtained in the step 1;
step 4, cooling the product obtained by spray drying again;
and 5, bagging the product.
Example 3
The invention provides a technical scheme that: a powder defoaming agent comprises the following components in percentage by weight:
polyether type defoaming mother liquor 55%
28 percent of organic silicon defoamer mother liquor
7 percent of quicklime
9.8 percent of water
0.2 percent of flame retardant
The total weight percentage of the components is 100 percent.
A preparation method of a powder defoaming agent comprises the following steps:
step 1, taking 550 parts of polyether type defoaming agent mother liquor and 280 parts of organic silicon defoaming agent mother liquor by weight, adding 70 parts of quick lime and 98 parts of water mixed solution, adding 2 parts of flame retardant, keeping stirring, and regulating the pH value of the mixed solution to 6.5-8.3;
step 2, setting the temperature of the spray drying process to be 95-110 ℃;
step 3, adding 30-50 parts of fumed silica in the spray drying process of the mixed solution obtained in the step 1;
step 4, cooling the product obtained by spray drying again;
and 5, bagging the product.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The powder defoaming agent is characterized by comprising the following components in percentage by weight:
45-55% of polyether type defoaming mother liquor
28 to 38 percent of organic silicon defoamer mother liquor
7 percent of quicklime
9.8 percent of water
0.2 percent of flame retardant
The total weight percentage of the components is 100 percent.
2. The powder defoaming agent according to claim 1, wherein: the proportion of the polyether defoaming mother liquor is 45%, 50% or 55%.
3. The powder defoaming agent according to claim 1, wherein: the proportion of the organosilicon defoamer mother liquor is one of 28%, 33% or 38%.
4. The preparation method of the powder defoaming agent according to claim 1, which is characterized by comprising the following steps:
step 1, taking 550 parts by weight of polyether type defoaming agent mother liquor and 380 parts by weight of organic silicon defoaming agent mother liquor, adding 70 parts by weight of mixed solution of quick lime and 98 parts by weight of water, adding 2 parts by weight of fire retardant, keeping stirring, and regulating the pH value of the mixed solution to 6.5-8.3;
step 2, setting the temperature of the spray drying process to be 95-110 ℃;
step 3, adding 30-50 parts of fumed silica in the spray drying process of the mixed solution obtained in the step 1;
step 4, cooling the product obtained by spray drying again;
and 5, bagging the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118980.0A CN111467843A (en) | 2020-02-26 | 2020-02-26 | Powder defoaming agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118980.0A CN111467843A (en) | 2020-02-26 | 2020-02-26 | Powder defoaming agent and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111467843A true CN111467843A (en) | 2020-07-31 |
Family
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| CN202010118980.0A Pending CN111467843A (en) | 2020-02-26 | 2020-02-26 | Powder defoaming agent and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0654525A1 (en) * | 1993-11-19 | 1995-05-24 | Dow Corning Corporation | Middle distillate hydrocarbon foam control agents from alkylmethylsiloxanes |
| CN1465431A (en) * | 2002-06-27 | 2004-01-07 | �й���һ�������Ź�˾ | High-effectine foam-eliminating agent mixture and preparation method thereof |
| CN103550961A (en) * | 2013-11-20 | 2014-02-05 | 南宁春城助剂有限责任公司 | Blocky solid defoaming agent and preparation method |
| CN103945914A (en) * | 2011-11-16 | 2014-07-23 | 信越化学工业株式会社 | Powder antifoaming agent and method for producing same |
| CN106267910A (en) * | 2016-08-10 | 2017-01-04 | 中国海洋石油总公司 | A kind of defoamer and its production and use |
| CN107497140A (en) * | 2017-09-07 | 2017-12-22 | 宁波顺泽橡胶有限公司 | A kind of high efficiency defoamer and preparation method thereof |
| CN107899274A (en) * | 2017-10-27 | 2018-04-13 | 乌鲁木齐市华泰隆化学助剂有限公司 | A kind of self-emulsifying type defoamer and preparation method thereof |
| CN108726913A (en) * | 2018-05-28 | 2018-11-02 | 天津中油渤星工程科技有限公司 | A kind of silicon ether composite anti-foaming agent and its preparation method and application |
-
2020
- 2020-02-26 CN CN202010118980.0A patent/CN111467843A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0654525A1 (en) * | 1993-11-19 | 1995-05-24 | Dow Corning Corporation | Middle distillate hydrocarbon foam control agents from alkylmethylsiloxanes |
| CN1465431A (en) * | 2002-06-27 | 2004-01-07 | �й���һ�������Ź�˾ | High-effectine foam-eliminating agent mixture and preparation method thereof |
| CN103945914A (en) * | 2011-11-16 | 2014-07-23 | 信越化学工业株式会社 | Powder antifoaming agent and method for producing same |
| CN103550961A (en) * | 2013-11-20 | 2014-02-05 | 南宁春城助剂有限责任公司 | Blocky solid defoaming agent and preparation method |
| CN106267910A (en) * | 2016-08-10 | 2017-01-04 | 中国海洋石油总公司 | A kind of defoamer and its production and use |
| CN107497140A (en) * | 2017-09-07 | 2017-12-22 | 宁波顺泽橡胶有限公司 | A kind of high efficiency defoamer and preparation method thereof |
| CN107899274A (en) * | 2017-10-27 | 2018-04-13 | 乌鲁木齐市华泰隆化学助剂有限公司 | A kind of self-emulsifying type defoamer and preparation method thereof |
| CN108726913A (en) * | 2018-05-28 | 2018-11-02 | 天津中油渤星工程科技有限公司 | A kind of silicon ether composite anti-foaming agent and its preparation method and application |
Non-Patent Citations (1)
| Title |
|---|
| 邹平: "《有机化学实验》", 31 January 2005 * |
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