CN105694105A - Preparation method of composite calcium carbonate - Google Patents
Preparation method of composite calcium carbonate Download PDFInfo
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- CN105694105A CN105694105A CN201410699331.9A CN201410699331A CN105694105A CN 105694105 A CN105694105 A CN 105694105A CN 201410699331 A CN201410699331 A CN 201410699331A CN 105694105 A CN105694105 A CN 105694105A
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- calcium carbonate
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- composite calcium
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Abstract
The invention discloses a preparation method of composite calcium carbonate. The composite calcium carbonate comprises nanometer level light calcium carbonate, heavy calcium carbonate and a silane coupling agent according to a ratio of 10: 1-3: 0.2-0.5. The preparation method comprises matching the nanometer level light calcium carbonate and the heavy calcium carbonate, feeding the materials into a high speed mixer, adding the silane coupling agent into the mixer and carrying out mixing stirring for 5-10min to obtain a finished product. The preparation method comprises mixing the nanometer level light calcium carbonate and heavy calcium carbonate and modifying the mixture through the silane coupling agent. The composite calcium carbonate has a part of performances of the nanometer level light calcium carbonate and a part of performances of heavy calcium carbonate and has high dispersibility and a low oil absorbing capacity.
Description
Technical field
The preparation method that the present invention relates to calcium carbonate, the preparation method particularly relating to a kind of composite calcium carbonate。
Background technology
In the last few years, along with expanding economy, the application of precipitated calcium carbonate is developed further, it it is a kind of inorganic filler being most widely used in polymer composite, it is widely used in rubber, plastics, paper, coating, adhesive, ink, in the industries such as cable, but owing to although precipitated calcium carbonate is to prepare, by chemical method, the ground calcium carbonate that performance in some respects is better than being prepared by physical method, but again not as good as ground calcium carbonate in having, the dispersive property of the precipitated calcium carbonate that we produce on market is more than the dispersive property of ground calcium carbonate, oil absorbency is less than the oil absorbency of ground calcium carbonate, develop a kind of composite calcium carbonate for this and solve this problem。
Summary of the invention
The technical problem to be solved is in that: the preparation method providing a kind of composite calcium carbonate, and described composite calcium carbonate had both had the advantage of precipitated calcium carbonate and also had the advantage of ground calcium carbonate, and this composite calcium carbonate has polymolecularity, low oil absorption ferric。
In order to solve the problems referred to above, the preparation method that the technical scheme is that a kind of composite calcium carbonate, described composite calcium carbonate includes nano level light calcium carbonate and ground calcium carbonate, silane coupler, and three mixes composition in the ratio of 10:1～3:0.2～0.5 successively, the preparation method of described composite calcium carbonate is: nano level light calcium carbonate and ground calcium carbonate are prepared by proportioning, being sent in high-speed mixer, then add silane coupler, mix and blend 5～10min obtains finished product。
Further, the rotating speed of described mixer is 500～800r/min, and the temperature in mixer is 100～120 DEG C。
Further, the preparation method of described nanometer grade calcium carbonate is: refining concentration is 15%～18% aqua calcis, passes into the kiln gas of carbonated 30%, and calcium hydroxide is carried out carbonization, then filter, dry, pulverize and obtain nanometer grade calcium carbonate。
Further, being added with dispersant, defoamer in described carburising step, the proportioning of described dispersant, defoamer and aqua calcis is 1～2:0.05～0.5:100。
Further, described dispersant is polycarboxylic acid dispersant。
Further, described defoamer is the aqueous defoamer being made up of dimethicone, white carbon, emulsifying agent。
Beneficial effects of the present invention: the present invention is adopted nano level light calcium carbonate to mix with ground calcium carbonate and prepared by silane coupler modified, there is the partial properties of nano level light calcium carbonate on the one hand, also there is the partial properties of ground calcium carbonate on the other hand, the composite calcium carbonate obtained has the superior function of high dispersive, low oil absorption ferric, the calcium carbonate of low oil absorption ferric adds the consumption that can reduce plasticizer in plastics to, the addition that can also increase calcium carbonate reduces the cost of plastic product, improves the mechanical property of plastic；Carbonizatin method preparation process with the addition of dispersant and defoamer ensure that the dispersive property of finished product nano level light calcium carbonate。
Detailed description of the invention
Embodiment 1
A kind of composite calcium carbonate includes nano level light calcium carbonate and ground calcium carbonate, silane coupler, and three presses the mixing composition of 10:1:0.2, the preparation process of this composite calcium carbonate is nano level light calcium carbonate and ground calcium carbonate to be prepared by proportioning, it is sent in high-speed mixer, the rotating speed controlling mixer is 500r/min, temperature in mixer is 100 DEG C, then adds silane coupler, and mix and blend 5min obtains finished product。
The preparation process of nanometer grade calcium carbonate used in above-mentioned preparation process is refining concentration successively is 15%% aqua calcis, pass into the kiln gas of carbonated 30%, calcium hydroxide is carried out carbonization, then filter, dry, pulverize and obtain nanometer grade calcium carbonate；The aqueous defoamer be added with polycarboxylic acid dispersant in carburising step, being made up of dimethicone, white carbon, emulsifying agent, wherein polycarboxylic acid dispersant and aqueous defoamer, aqua calcis proportioning are 1:0.05:100。
Embodiment 2
A kind of composite calcium carbonate includes nano level light calcium carbonate and ground calcium carbonate, silane coupler, and three presses the mixing composition of 10:2:0.35, the preparation process of this composite calcium carbonate is nano level light calcium carbonate and ground calcium carbonate to be prepared by proportioning, it is sent in high-speed mixer, the rotating speed controlling mixer is 650r/min, temperature in mixer is 110 DEG C, then adds silane coupler, and mix and blend 8min obtains finished product。
The preparation process of nanometer grade calcium carbonate used in above-mentioned preparation process is refining concentration successively is 16% aqua calcis, passes into the kiln gas of carbonated 30%, calcium hydroxide is carried out carbonization, then filter, dry, pulverize and obtain nanometer grade calcium carbonate；The aqueous defoamer be added with polycarboxylic acid dispersant in carburising step, being made up of dimethicone, white carbon, emulsifying agent, wherein polycarboxylic acid dispersant and aqueous defoamer, aqua calcis proportioning are 1.5:0.25:100。
Embodiment 3
A kind of composite calcium carbonate includes nano level light calcium carbonate and ground calcium carbonate, silane coupler, and three presses the mixing composition of 10:3:0.5, the preparation process of this composite calcium carbonate is nano level light calcium carbonate and ground calcium carbonate to be prepared by proportioning, it is sent in high-speed mixer, the rotating speed controlling mixer is 800r/min, temperature in mixer is 120 DEG C, then adds silane coupler, and mix and blend 10min obtains finished product。
The preparation process of nanometer grade calcium carbonate used in above-mentioned preparation process is refining concentration successively is 18% aqua calcis, passes into the kiln gas of carbonated 30%, calcium hydroxide is carried out carbonization, then filter, dry, pulverize and obtain nanometer grade calcium carbonate；The aqueous defoamer be added with polycarboxylic acid dispersant in carburising step, being made up of dimethicone, white carbon, emulsifying agent, wherein polycarboxylic acid dispersant and aqueous defoamer, aqua calcis proportioning are 2:0.5:100。
Above three embodiments of the present invention are described in detail, but described content has been only the preferred embodiment of the invention, it is impossible to be considered the practical range for limiting the invention。All equalizations made according to the invention application range change and improvement etc., all should still belong to the patent covering scope of the present invention。
Claims (6)
1. the preparation method of a composite calcium carbonate, it is characterized in that, described composite calcium carbonate includes nano level light calcium carbonate and ground calcium carbonate, silane coupler, and three mixes composition in the ratio of 10:1～3:0.2～0.5 successively, the preparation method of described composite calcium carbonate is: nano level light calcium carbonate and ground calcium carbonate are prepared by proportioning, being sent in high-speed mixer, then add silane coupler, mix and blend 5～10min obtains finished product。
2. the preparation method of a kind of composite calcium carbonate according to claim 1, it is characterised in that the rotating speed of described mixer is 500～800r/min, the temperature in mixer is 100～120 DEG C。
3. the preparation method of a kind of composite calcium carbonate according to claim 2, it is characterized in that, the preparation method of described nanometer grade calcium carbonate is: refining concentration is 15%～18% aqua calcis, pass into the kiln gas of carbonated 30%, calcium hydroxide is carried out carbonization, then filter, dry, pulverize and obtain nanometer grade calcium carbonate。
4. the preparation method of a kind of composite calcium carbonate according to claim 3, it is characterised in that be added with dispersant, defoamer in described carburising step, the proportioning of described dispersant, defoamer and solution is 1～2:0.05～0.5:100。
5. the preparation method of a kind of composite calcium carbonate according to claim 4, it is characterised in that described dispersant is polycarboxylic acid dispersant。
6. the preparation method of a kind of composite calcium carbonate according to claim 5, it is characterised in that described defoamer is the aqueous defoamer being made up of dimethicone, white carbon, emulsifying agent。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410699331.9A CN105694105A (en) | 2014-11-26 | 2014-11-26 | Preparation method of composite calcium carbonate |
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| CN201410699331.9A CN105694105A (en) | 2014-11-26 | 2014-11-26 | Preparation method of composite calcium carbonate |
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| CN105694105A true CN105694105A (en) | 2016-06-22 |
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| CN201410699331.9A Pending CN105694105A (en) | 2014-11-26 | 2014-11-26 | Preparation method of composite calcium carbonate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107446384A (en) * | 2017-08-10 | 2017-12-08 | 青阳县永诚钙业有限责任公司 | A kind of preparation method of composite calcium carbonate |
| CN109021338A (en) * | 2018-06-04 | 2018-12-18 | 山东承坤信息科技有限公司 | A kind of nontoxic complex plastic runway of flame-proof abrasion-resistant and preparation method thereof |
| CN114350180A (en) * | 2021-12-03 | 2022-04-15 | 广西大学 | Mechanical activation nano-modified heavy calcium carbonate and preparation method thereof |
-
2014
- 2014-11-26 CN CN201410699331.9A patent/CN105694105A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107446384A (en) * | 2017-08-10 | 2017-12-08 | 青阳县永诚钙业有限责任公司 | A kind of preparation method of composite calcium carbonate |
| CN109021338A (en) * | 2018-06-04 | 2018-12-18 | 山东承坤信息科技有限公司 | A kind of nontoxic complex plastic runway of flame-proof abrasion-resistant and preparation method thereof |
| CN109021338B (en) * | 2018-06-04 | 2021-03-12 | 青岛汇文教育装备有限公司 | Flame-retardant wear-resistant nontoxic composite plastic track and preparation method thereof |
| CN114350180A (en) * | 2021-12-03 | 2022-04-15 | 广西大学 | Mechanical activation nano-modified heavy calcium carbonate and preparation method thereof |
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Application publication date: 20160622 |
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