CN104150492A - High-dispersibility white carbon black production method - Google Patents
High-dispersibility white carbon black production method Download PDFInfo
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- CN104150492A CN104150492A CN201410407859.4A CN201410407859A CN104150492A CN 104150492 A CN104150492 A CN 104150492A CN 201410407859 A CN201410407859 A CN 201410407859A CN 104150492 A CN104150492 A CN 104150492A
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- carbon black
- white carbon
- production method
- dispersibility
- triethyl phosphate
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Abstract
The invention discloses a high-dispersibility white carbon black production method, which comprises the following steps that under existence of triethyl phosphate, sulfuric acid and soluble glass are subjected to a precipitation reaction, and are deposited and dried to obtain white carbon black. Compared with a white carbon black production method through a precipitation method, triethyl phosphate is added in the reaction of the method, the addition has the effect for inhibiting agglomeration and growth of silica sediment, so that high-dispersibility white carbon black with specific surface area of more than 300m<2>/g can be obtained.
Description
Technical field
The invention belongs to white carbon black field, be specifically related to a kind of production method of polymolecularity white carbon black.
Background technology
White carbon black is silicon-dioxide, is the important supporting material of rubber industry, by production method, can be divided into precipitated silica and thermal silica.The traditional production technique of precipitated silica is normally by water glass (being water glass) and sulfuric acid generation precipitin reaction, precipitation after filtration, dryly obtain white carbon black, react for Na
2siO
3+ H
2sO
4→ SiO
2↓+Na
2sO
4+ H
2o.Compare with thermal silica, the production cost of precipitated silica is relatively low, but dispersiveness is relatively poor.
Summary of the invention
The technical problem to be solved in the present invention is the defect that overcomes existing precipitated silica, and a kind of production method of polymolecularity white carbon black is provided.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The production method of polymolecularity white carbon black, step comprises, under the existence of triethyl phosphate, sulfuric acid and water glass generation precipitin reaction, the dry white carbon black that obtains of precipitation.
Further, the consumption of described triethyl phosphate is 1～10wt% of water glass consumption.
Compare with existing precipitated silica production method, the inventive method first adds triethyl phosphate in water glass, and then adding sulfuric acid, the reunion that utilizes triethyl phosphate inhibition to be reacted the silicon-dioxide generating with waterglass precipitate by sulfuric acid is grown, thereby obtain specific surface area, reaches 300m
2polymolecularity white carbon black more than/g.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
embodiment 1
Under room temperature, first triethyl phosphate is joined in water glass (modulus is 3.3) by the consumption of 6wt%, after being stirred to triethyl phosphate and dissolving completely, then with 150rmin
-1stirring velocity by concentration, be that 25wt% sulfuric acid joins in water glass while stirring, until pH reaches 5-5.5, continue to stir after 30 minutes, filter the dry white carbon black, specific surface area (BET, m of obtaining at 120 ℃
2/ g): 330.
Comparative example 1
Under room temperature, (150rmin is stirred on limit
-1) limit is that 25wt% sulfuric acid joins in water glass (modulus is 3.3) by concentration, until pH reaches 5-5.5, continues to stir after 30 minutes, filters the dry white carbon black, specific surface area (BET, m of obtaining at 120 ℃
2/ g): 183.
embodiment 2
At 45 ℃, first triethyl phosphate is joined in water glass (modulus is 3.1) by the consumption of 3wt%, after being stirred to triethyl phosphate and dissolving completely, then with 200rmin
-1stirring velocity by concentration, be that 25wt% sulfuric acid joins in water glass while stirring, until pH reaches 5-5.5, continue to stir after 20 minutes, filter the dry white carbon black, specific surface area (BET, m of obtaining at 120 ℃
2/ g): 301.
Comparative example 2
At 45 ℃, (200rmin is stirred on limit
-1) limit is that 25wt% sulfuric acid joins in water glass (modulus is 3.3) by concentration, until pH reaches 5-5.5, continues to stir after 20 minutes, filters the dry white carbon black, specific surface area (BET, m of obtaining at 120 ℃
2/ g): 160.
embodiment 3
Under room temperature, first triethyl phosphate is joined in water glass (modulus is 3.5) by the consumption of 10wt%, after being stirred to triethyl phosphate and dissolving completely, then with 180rmin
-1stirring velocity by concentration, be that 30wt% sulfuric acid joins in water glass while stirring, until pH reaches 5.5-6, continue to stir after 30 minutes, filter the dry white carbon black, specific surface area (BET, m of obtaining at 120 ℃
2/ g): 350.
Comparative example 3
Under room temperature, (180rmin is stirred on limit
-1) limit is that 30wt% sulfuric acid joins in water glass (modulus is 3.5) by concentration, until pH reaches 5.5-6, continues to stir after 30 minutes, filters the dry white carbon black, specific surface area (BET, m of obtaining at 120 ℃
2/ g): 197.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. the production method of polymolecularity white carbon black, step comprises, under the existence of triethyl phosphate, sulfuric acid and water glass generation precipitin reaction, the dry white carbon black that obtains of precipitation.
2. the production method of polymolecularity white carbon black according to claim 1, is characterized in that, the consumption of described triethyl phosphate is 1～10wt% of water glass consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410407859.4A CN104150492B (en) | 2014-08-19 | 2014-08-19 | The production method of high-dispersity white carbon black |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201410407859.4A CN104150492B (en) | 2014-08-19 | 2014-08-19 | The production method of high-dispersity white carbon black |
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| Publication Number | Publication Date |
|---|---|
| CN104150492A true CN104150492A (en) | 2014-11-19 |
| CN104150492B CN104150492B (en) | 2016-09-14 |
Family
ID=51876163
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410407859.4A Active CN104150492B (en) | 2014-08-19 | 2014-08-19 | The production method of high-dispersity white carbon black |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828832A (en) * | 2015-06-05 | 2015-08-12 | 确成硅化学股份有限公司 | Method for preparing high-dispersity white carbon black by hydrochloric acid precipitation method |
| CN107324343A (en) * | 2017-06-15 | 2017-11-07 | 确成硅化学股份有限公司 | A kind of high preparation method for stretching high dispersive hydrated SiO 2 surely |
| CN111517328A (en) * | 2020-04-16 | 2020-08-11 | 江西双龙硅材料科技有限公司 | Preparation method of high-dispersity white carbon black for tires |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303929A (en) * | 2013-07-06 | 2013-09-18 | 福建省三明同晟化工有限公司 | Preparation method of high-transparency high-dispersity white carbon black |
| CN103449458A (en) * | 2013-08-21 | 2013-12-18 | 安徽确成硅化学有限公司 | Preparation method of high-dispersivity white carbon black |
| CN103922346A (en) * | 2013-01-14 | 2014-07-16 | 上海华明高技术（集团）有限公司 | Preparation method for high-dispersion precipitated white carbon black |
-
2014
- 2014-08-19 CN CN201410407859.4A patent/CN104150492B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922346A (en) * | 2013-01-14 | 2014-07-16 | 上海华明高技术（集团）有限公司 | Preparation method for high-dispersion precipitated white carbon black |
| CN103303929A (en) * | 2013-07-06 | 2013-09-18 | 福建省三明同晟化工有限公司 | Preparation method of high-transparency high-dispersity white carbon black |
| CN103449458A (en) * | 2013-08-21 | 2013-12-18 | 安徽确成硅化学有限公司 | Preparation method of high-dispersivity white carbon black |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828832A (en) * | 2015-06-05 | 2015-08-12 | 确成硅化学股份有限公司 | Method for preparing high-dispersity white carbon black by hydrochloric acid precipitation method |
| CN107324343A (en) * | 2017-06-15 | 2017-11-07 | 确成硅化学股份有限公司 | A kind of high preparation method for stretching high dispersive hydrated SiO 2 surely |
| CN111517328A (en) * | 2020-04-16 | 2020-08-11 | 江西双龙硅材料科技有限公司 | Preparation method of high-dispersity white carbon black for tires |
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|---|---|
| CN104150492B (en) | 2016-09-14 |
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