CN107312361A - A kind of preparation technology for improving nano-calcium carbonate activation rate - Google Patents
A kind of preparation technology for improving nano-calcium carbonate activation rate Download PDFInfo
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- CN107312361A CN107312361A CN201710528519.0A CN201710528519A CN107312361A CN 107312361 A CN107312361 A CN 107312361A CN 201710528519 A CN201710528519 A CN 201710528519A CN 107312361 A CN107312361 A CN 107312361A
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- Prior art keywords
- calcium carbonate
- nano
- activation rate
- preparation technology
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
- C09C1/022—Treatment with inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of preparation technology for improving nano-calcium carbonate activation rate, comprise the following steps：(1) by sodium hydroxide, stearic acid, laurate from be made surface treatment agent solution to nano calcium carbonate suspension carry out it is wet-process modified after, maintenance system reaction temperature is 50~70 DEG C, add 0.2wt%~0.8wt% of butt calcium carbonate quantity Macrogol 6000,0.5~1h of mixing time；(2) be pumped into buffer barrel be evacuated to while stirring filter press be dehydrated, be made nano-calcium carbonate.Activation rate of the present invention is high, and processing cost is low, can be alleviated press filtration with large-scale production and enter slurry difficulty, not only reduced energy consumption, improve yield, and the quality of product is had been improved.
Description
Technical field
The invention belongs to chemical technology field, and in particular to a kind of preparation technology of raising nano-calcium carbonate activation rate.
Background technology
Nano-calcium carbonate is surface-treated to adjust surface acid-base balance and surface hydrophobic to it, its surface is reduced,
Intergranular agglomeration power is reduced, increases lipophile, its dispersiveness and dispersion stabilization in matrix is improved, so as to significantly improve
The chemical affinity of calcium carbonate and polymer, so as to increase the compatibility with high polymer, it is nano-calcium carbonate trend that surface, which is modified,
The only way of functional form, tailored version and high added value type.It is many to there is foam in the slurry that I is taken charge of after nano-calcium carbonate activation at present,
Slurry difficulty is entered in press filtration, and activation rate is generally 99.0~99.5.This project is improved by the buffer barrel deposited to actived slurry, and is added
Bonus point powder Macrogol 6000, improvement foam is more, alleviates press filtration and enters slurry difficulty, improves activation rate.
Nano-calcium carbonate is as filler or reinforcing agent, and its application field is usually the non-pole such as plastics, rubber, ink, coating
Property or low pole oil phase substance, only could be with these organic polymers point with the nano-calcium carbonate after surfactant-modified
Good compatibility is produced between son.In some sense, whether precipitated calcium carbonate is surface-treated, determine its product specification and
Purposes.The substantial amounts of calcium carbonate for special use main distinction is that the difference that surface is modified, i.e. activating agent are different, its activated Calcium carbonate purposes
It is different.In addition, the optimum choice and reasonable disposition of activating process and relevant device are the necessary guarantees for realizing optimal activation effect.
The buffer barrel that this project is deposited by actived slurry is improved, and adds dispersant Macrogol 6000 in slurry after activation,
Improve foam many, alleviate press filtration and enter slurry difficulty, improve activation rate, not only reduce energy consumption, improve yield, and to product
Quality have been improved.
Calcium carbonate turns into a kind of functional packing material as a kind of inorganic chemical product after surface-modified processing.
It is widely used in the industry such as plastics, rubber, ink, coating, papermaking, adhesive, sealant, is also applied to toothpaste, food, doctor
The industries such as medicine, feed, building materials, chemical fibre.Polyethylene glycol has many patented technologies as a kind of dispersant in nano-calcium carbonate industry
Improve, Macrogol 6000 is nontoxic, there is good water solubility, strong to that can exist between polymer and surfactant is mutual
Effect, can form the polymer-surfactant compound of labyrinth in aqueous, scattered compared to phosphoric acid salt in addition
The whiteness and background color of product are not interfered with for agent.
All the time, when the slurry after activation squeezes into buffering storing barrel by pump, bucket is cylindric, and slurry is freely falling body
Directly to bottom flow into be very easy to overfoaming, it is difficult to it was observed that the physical location of slurry and cause operational control to be slipped up, often overflow
Material, slurry loss is serious.By sampling the constituent analysis to material inside foam, most of is surface conditioning agent composition, and this says
How our bright cladding not exclusively, improves this state that material bubbles after activation process, improves activation rate.
The content of the invention
Regarding the issue above, the present invention provides a kind of good raising nano-calcium carbonate activation rate of sensitivity
Preparation technology.
To reach above-mentioned purpose, present invention employs following technical proposal：A kind of nano-calcium carbonate that improves of the present invention is lived
The preparation technology of rate, comprises the following steps：(1) surface treatment agent solution is made by sodium hydroxide, stearic acid, laurate certainly
After wet-process modified to nano calcium carbonate suspension progress, maintenance system reaction temperature is 50~70 DEG C, adds butt calcium carbonate quantity
0.2wt%~0.8wt% Macrogol 6000,0.5~1h of mixing time；
(2) be pumped into buffer barrel be evacuated to while stirring filter press be dehydrated, be made nano-calcium carbonate.
Further, in step (1), the buffering bottom of the barrel is shaped as centrum, and top is shaped as cylinder.From
And it is more to improve foam, alleviating press filtration, to enter slurry difficult, improves activation rate, not only reduces energy consumption, improves yield, and to production
The quality of product has been improved.
Further, in step (1), mixing time 0.8h.
Application of the method for the present invention for improving nano-calcium carbonate activation rate in the manufacture of nano-calcium carbonate.
Beneficial effect：Activation rate of the present invention is high, and processing cost is low, can alleviate press filtration with large-scale production and enter slurry difficulty, no
But energy consumption is reduced, yield is improved, and the quality of product is had been improved.
Compared with prior art, the invention has the advantages that：(1) dispersiveness for improving nano-calcium carbonate after activation can be with
Greatly reduce its reunion, the stability of control material, so that higher activation rate can be had by ensureing the stability of its application.
(2) it is many so as to improve foam, alleviate press filtration and enter slurry difficulty, improve activation rate, not only reduce energy consumption, improve
Yield, and the quality of product is had been improved.
Embodiment
Technical scheme is described in further detail with reference to embodiment.
Embodiment 1
A kind of preparation technology of raising nano-calcium carbonate activation rate of the present invention, comprises the following steps：(1) hydroxide is passed through
Sodium, stearic acid, laurate from be made surface treatment agent solution to nano calcium carbonate suspension carry out it is wet-process modified after, maintenance system
Reaction temperature is 50 DEG C, adds the 0.2wt% of butt calcium carbonate quantity Macrogol 6000, mixing time 0.5h；The buffering
Bottom of the barrel is shaped as centrum, and top is shaped as cylinder.
(2) be pumped into buffer barrel be evacuated to while stirring filter press be dehydrated, be made nano-calcium carbonate.
Application of the method for the present invention for improving nano-calcium carbonate activation rate in the manufacture of nano-calcium carbonate.
Embodiment 2
The difference of embodiment 2 and embodiment 1 is：
A kind of preparation technology of raising nano-calcium carbonate activation rate of the present invention, comprises the following steps：(1) hydroxide is passed through
Sodium, stearic acid, laurate from be made surface treatment agent solution to nano calcium carbonate suspension carry out it is wet-process modified after, maintenance system
Reaction temperature is 70 DEG C, adds the 0.8wt% of butt calcium carbonate quantity Macrogol 6000, mixing time 1h.
(2) be pumped into buffer barrel be evacuated to while stirring filter press be dehydrated, be made nano-calcium carbonate.
Embodiment 3
The difference of embodiment 3 and embodiment 1 is：
A kind of preparation technology of raising nano-calcium carbonate activation rate of the present invention, comprises the following steps：(1) hydroxide is passed through
Sodium, stearic acid, laurate from be made surface treatment agent solution to nano calcium carbonate suspension carry out it is wet-process modified after, maintenance system
Reaction temperature is 60 DEG C, adds the 0.6wt% of butt calcium carbonate quantity Macrogol 6000, mixing time 0.8h.
(2) be pumped into buffer barrel be evacuated to while stirring filter press be dehydrated, be made nano-calcium carbonate.
Experiment
Embodiment 1 to the activation rate of the nano-calcium carbonate calcium product of the gained of formula embodiment 3 is detected, and and prior art
Activation rate be compared, obtain data as shown in table 1：
Table 1
| Activation rate | |
| Embodiment 1 | 97% |
| Embodiment 2 | 98% |
| Embodiment 3 | 97% |
| Prior art products | 80% |
As shown in Table 1, the activation rate of the product obtained by the embodiment of the present invention 1 to embodiment 3 is than general prior art
The activation rate of product is higher by a lot.
The foregoing describe general principle, principal character and the advantages of the present invention of the present invention.The technical staff of the industry should
The understanding, the present invention is not limited to the above embodiments, simply illustrates the present invention described in above-described embodiment and specification
Principle, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, and application claims are protected
Scope is protected by appended claims, specification and its equivalent thereof.
Claims (4)
1. a kind of preparation technology for improving nano-calcium carbonate activation rate, it is characterised in that comprise the following steps：(1) hydroxide is passed through
Sodium, stearic acid, laurate from be made surface treatment agent solution to nano calcium carbonate suspension carry out it is wet-process modified after, maintenance system
Reaction temperature is 50~70 DEG C, adds 0.2wt%~0.8wt% of butt calcium carbonate quantity Macrogol 6000, mixing time
0.5~1h；
(2) be pumped into buffer barrel be evacuated to while stirring filter press be dehydrated.
2. the preparation technology of the raising nano-calcium carbonate activation rate according to claim 1, it is characterised in that：In step
(1) in, the buffering bottom of the barrel is shaped as centrum, and top is shaped as cylinder.
3. the preparation technology of the raising nano-calcium carbonate activation rate according to claim 1, it is characterised in that：In step
(1) in, mixing time 0.8h.
4. the method for the raising nano-calcium carbonate activation rate described in any one of claims 1 to 3 is in the manufacture of nano-calcium carbonate
Application.
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| CN201710528519.0A CN107312361A (en) | 2017-07-01 | 2017-07-01 | A kind of preparation technology for improving nano-calcium carbonate activation rate |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475759A (en) * | 2009-01-21 | 2009-07-08 | 山东海泽纳米材料有限公司 | Practical method for preparing high thixotropy surface treating nano calcium carbonate |
| CN101967310A (en) * | 2010-07-14 | 2011-02-09 | 山东海泽纳米材料有限公司 | Method for preparing nano calcium carbonate with low viscosity and medium thixotropic property |
| CN104497634A (en) * | 2014-11-25 | 2015-04-08 | 广西华纳新材料科技有限公司 | Preparation method of nano calcium carbonate used for weather proofing silicone sealant |
| CN104530768A (en) * | 2014-12-26 | 2015-04-22 | 四川石棉巨丰粉体有限公司 | Coarse whiting filler for gas-permeable membrane and preparation method of coarse whiting filler |
| CN106675109A (en) * | 2016-11-11 | 2017-05-17 | 恩平燕怡新材料有限公司 | Preparation method of high-activity nano calcium carbonate subjected to surface bioactive treatment |
-
2017
- 2017-07-01 CN CN201710528519.0A patent/CN107312361A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475759A (en) * | 2009-01-21 | 2009-07-08 | 山东海泽纳米材料有限公司 | Practical method for preparing high thixotropy surface treating nano calcium carbonate |
| CN101967310A (en) * | 2010-07-14 | 2011-02-09 | 山东海泽纳米材料有限公司 | Method for preparing nano calcium carbonate with low viscosity and medium thixotropic property |
| CN104497634A (en) * | 2014-11-25 | 2015-04-08 | 广西华纳新材料科技有限公司 | Preparation method of nano calcium carbonate used for weather proofing silicone sealant |
| CN104530768A (en) * | 2014-12-26 | 2015-04-22 | 四川石棉巨丰粉体有限公司 | Coarse whiting filler for gas-permeable membrane and preparation method of coarse whiting filler |
| CN106675109A (en) * | 2016-11-11 | 2017-05-17 | 恩平燕怡新材料有限公司 | Preparation method of high-activity nano calcium carbonate subjected to surface bioactive treatment |
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