CN108084491A - A kind of preparation method of functional calcium carbonate - Google Patents
A kind of preparation method of functional calcium carbonate Download PDFInfo
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- CN108084491A CN108084491A CN201711308867.3A CN201711308867A CN108084491A CN 108084491 A CN108084491 A CN 108084491A CN 201711308867 A CN201711308867 A CN 201711308867A CN 108084491 A CN108084491 A CN 108084491A
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- calcium carbonate
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- carbonization reactor
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Chemical Kinetics & Catalysis (AREA)
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
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Abstract
The invention discloses a kind of preparation method of functional calcium carbonate, including step：Configuration concentration is 8% 15% powdered whiting suspension in carbonization reactor, and it is 28 32 DEG C to keep temperature in carbonization reactor；It keeps temperature-resistant, concentration is added in into carbonization reactor as 8% 15% calcium hydroxide solution, and is stirred evenly；Continue to keep temperature-resistant, crystal control agent is added in into carbonization reactor, and is stirred evenly；Carbon dioxide is injected into carbonization reactor, makes slurry PH to 6.5 7 in 1 2h, obtains mixed calcium carbonate suspension；Add in coupling agent into mixed calcium carbonate suspension, dehydration after 56 DEG C of 58 DEG C of 1 1.5h of stirring, it is dry at 100 DEG C 115 DEG C after sieving to get.Its calcium carbonate prepared can effectively reduce the polarity difference with plastics, improve the physical mechanical property of plastic products, effectively reduce the production cost of plastic products.
Description
Technical field
The present invention relates to chemical field, more particularly, it relates to a kind of preparation method of functional calcium carbonate.
Background technology
Calcium carbonate is a kind of inorganic filler being most widely used in polymer composite, is added in plastic processing suitable
The inorganic filler of amount can improve rigidity, wearability, hardness, weatherability of product etc., and can reduce production cost.It is but general
In the case of, the polarity difference of plastics and calcium carbonate is larger so that the plastic product physical mechanical property after addition declines, if can
Calcium carbonate is improved, is the technical issues of this field one is worth research to improve its using effect in plastic industry.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of preparation sides of functional calcium carbonate
Method, the calcium carbonate prepared can effectively reduce the polarity difference with plastics, improve the physical mechanical property of plastic products, effectively drop
The production cost of low plastic products.
To solve the above problems, the technical solution adopted in the present invention is as follows：
A kind of preparation method of functional calcium carbonate, including step：
S101. the powdered whiting suspension that configuration concentration is 8%-15% in carbonization reactor, keeps carburizing reagent
Temperature is 28-32 DEG C in device；
S102. keep temperature-resistant, concentration is added in into carbonization reactor and is the calcium hydroxide solution of 8%-15%, and is stirred
It mixes uniformly；
S103. continue to keep temperature-resistant, crystal control agent is added in into carbonization reactor, and is stirred evenly；
S104. carbon dioxide is injected into carbonization reactor, makes slurry PH to 6.5-7 in 1-2h, is mixed
Calcium carbonate suspension；
S105. coupling agent is added in into mixed calcium carbonate suspension, dehydration after 56 DEG C of -58 DEG C of stirring 1-1.5h, 100
At DEG C -115 DEG C it is dry after sieving to get.
Further, in the step S101, the powdered whiting is made by wet grinding calcium, fineness 8500-
9500 mesh.
Further, in the step S102, the quality and powdered whiting of calcium hydroxide in the calcium hydroxide solution
The mass ratio of powdered whiting is 5-8 in suspension:1.
Further, in the step S103, the crystal control agent is sodium acid carbonate.
Further, in the step S103, the additive amount of the crystal control agent is hydroxide in calcium hydroxide solution
The 0.3-0.5% of the quality of calcium.
Further, in the step S104, the density of carbon dioxide gas is 20-35%.
Further, in the step S105, the coupling agent is chelating titanate coupling agent.
Further, in the step S105, the additive amount of the coupling agent is mixed calcium carbonate turbid liquid concentration
1.5-3%.
Further, in the step S105, mesh size is 200 mesh during sieving.
Compared with prior art, the beneficial effects of the present invention are：There is preferable surface to be modified and make for coupling agent in the present invention
With, it can be while loading be increased, guarantee product has excellent mechanical performance, so as to fulfill the effect of production cost is reduced
Fruit；Functional calcium carbonate can uniformly disperse in PVC and PE systems in the present invention, increase the cohesive force at interface, have more
Excellent processing performance；
Specific embodiment
The present invention is described in further detail With reference to embodiment.
Raw material used are unless otherwise stated commercially available industrial goods in the following embodiments of the present invention, can pass through business
Industry channel is bought.
The present invention provides a kind of preparation method of functional calcium carbonate, including step：
S101. the powdered whiting suspension that configuration concentration is 8%-15% in carbonization reactor, keeps carburizing reagent
Temperature is 28-32 DEG C in device；
S102. keep temperature-resistant, concentration is added in into carbonization reactor and is the calcium hydroxide solution of 8%-15%, and is stirred
It mixes uniformly；
S103. continue to keep temperature-resistant, crystal control agent is added in into carbonization reactor, and is stirred evenly；
S104. carbon dioxide is injected into carbonization reactor, makes slurry PH to 6.5-7 in 1-2h, is mixed
Calcium carbonate suspension；
S105. coupling agent is added in into mixed calcium carbonate suspension, dehydration after 56 DEG C of -58 DEG C of stirring 1-1.5h, 100
At DEG C -115 DEG C it is dry after sieving to get.
Further, in the step S101, the powdered whiting is made by wet grinding calcium, fineness 8500-
9500 mesh.In the step S102, the quality of calcium hydroxide and weight in powdered whiting suspension in the calcium hydroxide solution
The mass ratio of matter calcium carbonate is 5-8:1.In the step S103, the crystal control agent is sodium acid carbonate.The step S103
In, the additive amount of the crystal control agent is the 0.3-0.5% of the quality of calcium hydroxide in calcium hydroxide solution.The step
In S104, the density of carbon dioxide gas is 20-35%.In the step S105, the coupling agent is chelating titanate
Coupling agent.In the step S105, the additive amount of the coupling agent is the 1.5-3% of mixed calcium carbonate turbid liquid concentration.It is described
In step S105, mesh size is 200 mesh during sieving.
Embodiment 1
The preparation of functional calcium carbonate G1
1. configuration concentration is 8% powdered whiting suspension in carbonization reactor, powdered whiting is by wet grinding
Calcium is made, and fineness is 8500 mesh, and it is 28-32 DEG C to keep temperature in carbonization reactor；
2. keeping temperature-resistant, concentration is added in into carbonization reactor and is 8% calcium hydroxide solution, and stirred evenly,
The mass ratio of the quality of calcium hydroxide and powdered whiting in powdered whiting suspension is 5 in calcium hydroxide solution：1；
3. continuing to keep temperature-resistant, sodium acid carbonate is added in into carbonization reactor, and is stirred evenly, crystal control agent
Additive amount is 0.3% of the quality of calcium hydroxide in calcium hydroxide solution；
4. implantation concentration is 25% carbon dioxide into carbonization reactor, makes slurry PH to 6.5-7 in 2h, obtain
Obtain mixed calcium carbonate suspension；
5. adding in chelating titanate coupling agent into mixed calcium carbonate suspension, the additive amount of coupling agent is mixed carbonic acid
The 3% of calcium turbid liquid concentration, 56 DEG C -58 DEG C are stirred dehydration after 1.5h, and 200 mesh sieves are crossed after being dried at 100 DEG C up to function
Property calcium carbonate G1.
Embodiment 2
The preparation of functional calcium carbonate G2
1. configuration concentration is 12% powdered whiting suspension in carbonization reactor, powdered whiting is by wet grinding
Calcium is made, and fineness is 9000 mesh, and it is 28-32 DEG C to keep temperature in carbonization reactor；
2. keeping temperature-resistant, concentration is added in into carbonization reactor and is 12% calcium hydroxide solution, and stirred evenly,
The mass ratio of the quality of calcium hydroxide and powdered whiting in powdered whiting suspension is 6 in calcium hydroxide solution:1；
3. continuing to keep temperature-resistant, sodium acid carbonate is added in into carbonization reactor, and is stirred evenly, crystal control agent
Additive amount is 0.4% of the quality of calcium hydroxide in calcium hydroxide solution；
4. implantation concentration is 30% carbon dioxide into carbonization reactor, makes slurry PH to 6.5-7 in 2h, obtain
Obtain mixed calcium carbonate suspension；
5. adding in chelating titanate coupling agent into mixed calcium carbonate suspension, the additive amount of coupling agent is mixed carbonic acid
The 2.5% of calcium turbid liquid concentration, 56 DEG C -58 DEG C are stirred dehydration after 1h, and 200 mesh sieves are crossed after being dried at 115 DEG C up to function
Property calcium carbonate G2.
Embodiment 3
The preparation of functional calcium carbonate G3
1. configuration concentration is 15% powdered whiting suspension in carbonization reactor, powdered whiting is by wet grinding
Calcium is made, and fineness is 9500 mesh, and it is 28-32 DEG C to keep temperature in carbonization reactor；
2. keeping temperature-resistant, concentration is added in into carbonization reactor and is 15% calcium hydroxide solution, and stirred evenly,
The mass ratio of the quality of calcium hydroxide and powdered whiting in powdered whiting suspension is 7 in calcium hydroxide solution:1；
3. continuing to keep temperature-resistant, sodium acid carbonate is added in into carbonization reactor, and is stirred evenly, crystal control agent
Additive amount is 0.5% of the quality of calcium hydroxide in calcium hydroxide solution；
4. implantation concentration is 25% carbon dioxide into carbonization reactor, makes slurry PH to 6.5-7 in 1h, obtain
Obtain mixed calcium carbonate suspension；
5. adding in chelating titanate coupling agent into mixed calcium carbonate suspension, the additive amount of coupling agent is mixed carbonic acid
The 2% of calcium turbid liquid concentration, dehydration after 56 DEG C of -58 DEG C of stirring 1h, crosses 200 mesh sieves up to functional after dry at 115 DEG C
Calcium carbonate G3.
Embodiment 4
The preparation of functional calcium carbonate G4
1. configuration concentration is 13% powdered whiting suspension in carbonization reactor, powdered whiting is by wet grinding
Calcium is made, and fineness is 9000 mesh, and it is 28-32 DEG C to keep temperature in carbonization reactor；
2. keeping temperature-resistant, concentration is added in into carbonization reactor and is 15% calcium hydroxide solution, and stirred evenly,
The mass ratio of the quality of calcium hydroxide and powdered whiting in powdered whiting suspension is 8 in calcium hydroxide solution:1；
3. continuing to keep temperature-resistant, sodium acid carbonate sodium acid carbonate is added in into carbonization reactor, and is stirred evenly, crystalline form
The additive amount of controlling agent is 0.5% of the quality of calcium hydroxide in calcium hydroxide solution；
4. implantation concentration is 35% carbon dioxide into carbonization reactor, makes slurry PH to 6.5-7 in 1h, obtain
Obtain mixed calcium carbonate suspension；
5. adding in chelating titanate coupling agent into mixed calcium carbonate suspension, the additive amount of coupling agent is mixed carbonic acid
The 2.5% of calcium turbid liquid concentration, 56 DEG C -58 DEG C are stirred dehydration after 1.5h, and 200 mesh sieves are crossed after being dried at 115 DEG C up to work(
It can property calcium carbonate G4.
Embodiment 5
Functional calcium carbonate G1-G4 made from embodiment 1-4 is respectively added to go forward side by side in polyethylene according to conventional amount used
The detection of row mechanical performance, testing result are shown, added with the hard of polyethylene product any in functional calcium carbonate G1-G4
Degree improves 15% or so compared to the product for being not added with calcium carbonate, and wearability is also obviously improved, it is seen then that produced by the invention
Functional calcium carbonate can effectively reduce the polarity difference with plastics, improve the physical mechanical property of plastic products.
Functional calcium carbonate G1-G4 made from embodiment 1-4 is respectively added in polyvinyl chloride simultaneously according to conventional amount used
The detection of mechanical performance is carried out, testing result is shown, added with polyvinyl chloride product any in functional calcium carbonate G1-G4
Hardness improve 15% or so compared to the product for being not added with calcium carbonate, wearability is also obviously improved, it is seen then that the present invention is raw
The functional calcium carbonate of production can effectively reduce the polarity difference with plastics, improve the physical mechanical property of plastic products.
It will be apparent to those skilled in the art that technical solution that can be as described above and design, make other various
Corresponding change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (9)
1. a kind of preparation method of functional calcium carbonate, including step：
S101. the powdered whiting suspension that configuration concentration is 8%-15% in carbonization reactor, keeps in carbonization reactor
Temperature is 28-32 DEG C；
S102. keep temperature-resistant, the calcium hydroxide solution that concentration is 8%-15% is added in into carbonization reactor, and stir equal
It is even；
S103. continue to keep temperature-resistant, crystal control agent is added in into carbonization reactor, and is stirred evenly；
S104. carbon dioxide is injected into carbonization reactor, makes slurry PH to 6.5-7 in 1-2h, obtains mixed carbonic acid
Calcium suspension；
S105. coupling agent is added in into mixed calcium carbonate suspension, dehydration after 56 DEG C of -58 DEG C of stirring 1-1.5h, 100 DEG C -
At 115 DEG C it is dry after sieving to get.
2. the preparation method of functional calcium carbonate as described in claim 1, which is characterized in that described in the step S101
Powdered whiting is made by wet grinding calcium, and fineness is 8500-9500 mesh.
3. the preparation method of functional calcium carbonate as described in claim 1, which is characterized in that described in the step S102
The mass ratio of the quality of calcium hydroxide and powdered whiting in powdered whiting suspension is 5-8 in calcium hydroxide solution:1.
4. the preparation method of functional calcium carbonate as described in claim 1, which is characterized in that described in the step S103
Crystal control agent is sodium acid carbonate.
5. the preparation method of functional calcium carbonate as claimed in claim 4, which is characterized in that described in the step S103
The additive amount of crystal control agent is the 0.3-0.5% of the quality of calcium hydroxide in calcium hydroxide solution.
6. the preparation method of functional calcium carbonate as described in claim 1, which is characterized in that described in the step S104
Density of carbon dioxide gas is 20-35%.
7. the preparation method of functional calcium carbonate as described in claim 1, which is characterized in that described in the step S105
Coupling agent is chelating titanate coupling agent.
8. the preparation method of functional calcium carbonate as claimed in claim 7, which is characterized in that described in the step S105
The additive amount of coupling agent is the 1.5-3% of mixed calcium carbonate turbid liquid concentration.
9. the preparation method of functional calcium carbonate as described in claim 1, which is characterized in that in the step S105, sieving
When mesh size be 200 mesh.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724378A (en) * | 2005-06-24 | 2006-01-25 | 上海华明高技术（集团）有限公司 | Process for preparing submicron grade superfine calcium carbonate dispersion particle |
| CN101830494A (en) * | 2010-05-11 | 2010-09-15 | 安徽工业大学 | Method for preparing active calcium carbonate by taking gypsum as raw material |
| CN101967298A (en) * | 2010-07-14 | 2011-02-09 | 山东海泽纳米材料有限公司 | Novel nano calcium carbonate used for plastic film and preparation method thereof |
| CN102659159A (en) * | 2012-02-22 | 2012-09-12 | 常州碳酸钙有限公司 | Method for preparing micron-granule composite nano calcium carbonate |
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2017
- 2017-12-11 CN CN201711308867.3A patent/CN108084491A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724378A (en) * | 2005-06-24 | 2006-01-25 | 上海华明高技术（集团）有限公司 | Process for preparing submicron grade superfine calcium carbonate dispersion particle |
| CN101830494A (en) * | 2010-05-11 | 2010-09-15 | 安徽工业大学 | Method for preparing active calcium carbonate by taking gypsum as raw material |
| CN101967298A (en) * | 2010-07-14 | 2011-02-09 | 山东海泽纳米材料有限公司 | Novel nano calcium carbonate used for plastic film and preparation method thereof |
| CN102659159A (en) * | 2012-02-22 | 2012-09-12 | 常州碳酸钙有限公司 | Method for preparing micron-granule composite nano calcium carbonate |
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Application publication date: 20180529 |