CN109836848A - A kind of hydrophobic calcium carbonate and preparation method thereof - Google Patents
A kind of hydrophobic calcium carbonate and preparation method thereof Download PDFInfo
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- CN109836848A CN109836848A CN201711232196.7A CN201711232196A CN109836848A CN 109836848 A CN109836848 A CN 109836848A CN 201711232196 A CN201711232196 A CN 201711232196A CN 109836848 A CN109836848 A CN 109836848A
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- calcium carbonate
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- hydrophobic
- coupling agent
- stearic acid
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Abstract
The present invention relates to a kind of hydrophobic calcium carbonates and preparation method thereof；Belong to calcium carbonate production and processing technical field.The hydrophobic calcium carbonate is in terms of mass fraction including following raw materials: 90-110 parts of calcium carbonate；2-3 parts of OP-10；1.5-3 parts of silane coupling agent；2-3 parts of stearic acid.Preparation method are as follows: match by design component and take calcium carbonate, OP-10, silane coupling agent, stearic acid；First calcium carbonate and stearic acid are added ball milling 2-3 hours；Obtain mixed-powder 1；Then OP-10, silane coupling agent are added in mixed-powder 1, ball milling 3-5 hours；Obtain mixed-powder 2；Then mixed-powder 2 is placed in chloroform, ultrasonic disperse 3-5 hours；Room temperature in vacuo ultrasound is dry；Obtain hydrophobic calcium carbonate.Composition design of the present invention is reasonable, and preparation process is simple, is convenient for heavy industrialization application.
Description
Technical field
The present invention relates to a kind of hydrophobic calcium carbonates and preparation method thereof；Belong to calcium carbonate production and processing technical field.
Background technique
Calcium carbonate can be used as white pigment in coating, play a kind of skeleton function, and priming paint can be enhanced in the filling of calcium carbonate
To the deposition and permeability of substrate surface.Currently, the calcium carbonate of the productions such as day raw white stone company, Italian Lyceum company is main
Suitable for improving the service performance of water paint.But calcium carbonate surface is hydrophilic and oleophobic, in highly polar, the hardly possible in organic media
It is poor with the binding force of base-material with evenly dispersed, boundary defect is easily caused, material property is caused to decline；Calcium carbonate particle partial size is got over
Small, the atomicity on surface is more, and surface can be higher, and suction-operated is stronger, between thermodynamics unsteady state, each particle easily
Reunite mutually, can not disperse well in a polymer matrix.The miniaturization of calcium carbonate particle, the complication of structure, surface are living
Property is the main direction of development of calcium carbonate industry from now on.
Summary of the invention
The present invention provides a kind of hydrophobic calcium carbonate and preparation method thereof aiming at the problem that above-mentioned calcium carbonate.
A kind of hydrophobic calcium carbonate of the present invention；The hydrophobic calcium carbonate is in terms of mass fraction including following raw materials:
90-110 parts of calcium carbonate；
2-3 parts of OP-10；
1.5-3 parts of silane coupling agent；
2-3 parts of stearic acid.
Preferably, a kind of hydrophobic calcium carbonate of the present invention；The hydrophobic calcium carbonate in terms of mass fraction including
Following raw materials:
90-100 parts of calcium carbonate；
3 parts of OP-10；
3 parts of silane coupling agent；
2-3 parts of stearic acid.
Preferably, a kind of hydrophobic calcium carbonate of the present invention；The hydrophobic calcium carbonate in terms of mass fraction including
Following raw materials:
90-95 parts of calcium carbonate；
3 parts of OP-10；
3 parts of silane coupling agent；
2-3 parts of stearic acid.
Preferably, a kind of hydrophobic calcium carbonate of the present invention；The hydrophobic calcium carbonate in terms of mass fraction including
Following raw materials:
90 parts of calcium carbonate；
3 parts of OP-10；
3 parts of silane coupling agent；
3 parts of stearic acid.
A kind of preparation method of hydrophobic calcium carbonate of the present invention, includes the following steps:
Step 1
Match by design component and takes calcium carbonate, OP-10, silane coupling agent, stearic acid；Ball first is added in calcium carbonate and stearic acid
Mill 2-3 hours；Obtain mixed-powder 1；
Step 2
OP-10, silane coupling agent are added in mixed-powder 1, ball milling 3-5 hours；Obtain mixed-powder 2；Then it will mix
It closes powder 2 to be placed in chloroform, ultrasonic disperse 3-5 hours；Room temperature in vacuo ultrasound is dry；Obtain hydrophobic calcium carbonate.
A kind of preparation method of hydrophobic calcium carbonate of the present invention, in step 1, when ball milling, control rotational speed of ball-mill is 250-
300 turns/min.
A kind of preparation method of hydrophobic calcium carbonate of the present invention, in step 1, when ball milling, control rotational speed of ball-mill is 650-
900 turns/min.
A kind of preparation method of hydrophobic calcium carbonate of the present invention, in step 1, the partial size with the calcium carbonate taken is less than or equal to
75 microns.
Specific embodiment
Embodiment 1
Step 1
In mass ratio, calcium carbonate: OP-10: silane coupling agent: stearic acid=90:3:3:3, which matches, takes calcium carbonate, OP-10, silicon
Alkane coupling agent, stearic acid；First calcium carbonate and stearic acid are added ball milling 3 hours；Obtain mixed-powder 1；Rotational speed of ball-mill is 300
Turn/min；
Step 2
OP-10, silane coupling agent are added in mixed-powder 1, ball milling 5 hours (rotational speed of ball-mill is 900 turns/min)；It obtains
Mixed-powder 2；Then mixed-powder 2 is placed in chloroform, ultrasonic disperse 3 hours；Room temperature in vacuo ultrasound is dry；Obtain hydrophobicity
Calcium carbonate.
A kind of preparation method of hydrophobic calcium carbonate of the present invention, in step 1, when ball milling, control rotational speed of ball-mill is 250-
300 turns/min.
A kind of preparation method of hydrophobic calcium carbonate of the present invention, in step 1, when ball milling, control rotational speed of ball-mill is 650-
900 turns/min.
A kind of preparation method of hydrophobic calcium carbonate of the present invention, in step 1, the partial size with the calcium carbonate taken is less than or equal to
75 microns.
Embodiment 2
Step 1
In mass ratio, calcium carbonate: OP-10: silane coupling agent: stearic acid=95:3:3:3, which matches, takes calcium carbonate, OP-10, silicon
Alkane coupling agent, stearic acid；First calcium carbonate and stearic acid are added ball milling 2 hours；Obtain mixed-powder 1；Rotational speed of ball-mill is 250
Turn/min；
Step 2
OP-10, silane coupling agent are added in mixed-powder 1, ball milling 4 hours (rotational speed of ball-mill is 700 turns/min)；It obtains
Mixed-powder 2；Then mixed-powder 2 is placed in chloroform, ultrasonic disperse 5 hours；Room temperature in vacuo ultrasound is dry；Obtain hydrophobicity
Calcium carbonate.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to structure of the invention
Think and range is defined.Without departing from the design concept of the invention, ordinary people in the field is to technology of the invention
The all variations and modifications that scheme is made should all drop into protection scope of the present invention.
Claims (8)
1. a kind of hydrophobic calcium carbonate；It is characterized in that；The hydrophobic calcium carbonate is in terms of mass fraction including following raw materials:
90-110 parts of calcium carbonate；
2-3 parts of OP-10；
1.5-3 parts of silane coupling agent；
2-3 parts of stearic acid.
2. a kind of hydrophobic calcium carbonate according to claim 1；It is characterized in that；The hydrophobic calcium carbonate is with mass parts
Number meter includes following raw materials:
90-100 parts of calcium carbonate；
3 parts of OP-10；
3 parts of silane coupling agent；
2-3 parts of stearic acid.
3. a kind of hydrophobic calcium carbonate according to claim 2；It is characterized in that；The hydrophobic calcium carbonate is with mass parts
Number meter includes following raw materials:
90-95 parts of calcium carbonate；
3 parts of OP-10；
3 parts of silane coupling agent；
2-3 parts of stearic acid.
4. a kind of hydrophobic calcium carbonate according to claim 3；It is characterized in that；The hydrophobic calcium carbonate is with mass parts
Number meter includes following raw materials:
90 parts of calcium carbonate；
3 parts of OP-10；
3 parts of silane coupling agent；
3 parts of stearic acid.
5. a kind of method for preparing the hydrophobic calcium carbonate as described in claim 1-4 any one, it is characterised in that；Including following
Step:
Step 1
Match by design component and takes calcium carbonate, OP-10, silane coupling agent, stearic acid；Ball milling 2- first is added in calcium carbonate and stearic acid
3 hours；Obtain mixed-powder 1；
Step 2
OP-10, silane coupling agent are added in mixed-powder 1, ball milling 3-5 hours；Obtain mixed-powder 2；Then by mixed powder
End 2 is placed in chloroform, and ultrasonic disperse 3-5 hours；Room temperature in vacuo ultrasound is dry；Obtain hydrophobic calcium carbonate.
6. a kind of preparation method of hydrophobic calcium carbonate according to claim 5, it is characterised in that: in step 1, ball milling
When, control rotational speed of ball-mill is that 250-300 turns/min.
7. a kind of preparation method of hydrophobic calcium carbonate according to claim 5, it is characterised in that: in step 1, ball milling
When, control rotational speed of ball-mill is that 650-900 turns/min.
8. a kind of preparation method of hydrophobic calcium carbonate according to claim 5, it is characterised in that: in step 1, with taking
Calcium carbonate partial size be less than or equal to 75 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711232196.7A CN109836848A (en) | 2017-11-29 | 2017-11-29 | A kind of hydrophobic calcium carbonate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711232196.7A CN109836848A (en) | 2017-11-29 | 2017-11-29 | A kind of hydrophobic calcium carbonate and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109836848A true CN109836848A (en) | 2019-06-04 |
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| CN201711232196.7A Pending CN109836848A (en) | 2017-11-29 | 2017-11-29 | A kind of hydrophobic calcium carbonate and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439770A (en) * | 2019-11-21 | 2020-07-24 | 东北石油大学 | Hydrophobic calcium carbonate and preparation method thereof |
-
2017
- 2017-11-29 CN CN201711232196.7A patent/CN109836848A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439770A (en) * | 2019-11-21 | 2020-07-24 | 东北石油大学 | Hydrophobic calcium carbonate and preparation method thereof |
| CN111439770B (en) * | 2019-11-21 | 2022-09-16 | 东北石油大学 | Hydrophobic calcium carbonate and preparation method thereof |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190604 |