CN114573866A - Special filler for marble adhesive and preparation method thereof - Google Patents
Special filler for marble adhesive and preparation method thereof Download PDFInfo
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- CN114573866A CN114573866A CN202210360917.7A CN202210360917A CN114573866A CN 114573866 A CN114573866 A CN 114573866A CN 202210360917 A CN202210360917 A CN 202210360917A CN 114573866 A CN114573866 A CN 114573866A
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- powder
- calcium carbonate
- wollastonite
- modified
- particle size
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- 239000004579 marble Substances 0.000 title claims abstract description 42
- 239000000945 filler Substances 0.000 title claims abstract description 31
- 239000000853 adhesive Substances 0.000 title claims abstract description 26
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 162
- 239000000843 powder Substances 0.000 claims abstract description 132
- 239000002245 particle Substances 0.000 claims abstract description 82
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 77
- 239000010456 wollastonite Substances 0.000 claims abstract description 74
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 74
- 238000000227 grinding Methods 0.000 claims abstract description 44
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 230000004048 modification Effects 0.000 claims abstract description 24
- 238000012986 modification Methods 0.000 claims abstract description 24
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229940047670 sodium acrylate Drugs 0.000 claims abstract description 23
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 20
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 20
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000008117 stearic acid Substances 0.000 claims abstract description 20
- 238000000498 ball milling Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000003889 chemical engineering Methods 0.000 abstract description 2
- 239000000084 colloidal system Substances 0.000 abstract description 2
- 238000011049 filling Methods 0.000 abstract description 2
- 239000012847 fine chemical Substances 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 description 24
- 239000003292 glue Substances 0.000 description 16
- 238000004140 cleaning Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000004575 stone Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- RCMGWCPDNFVMJN-UHFFFAOYSA-N [N].CN(C1=CC=C(C=C1)C)C Chemical compound [N].CN(C1=CC=C(C=C1)C)C RCMGWCPDNFVMJN-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 235000013550 pizza Nutrition 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Images
Classifications
-
- 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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- 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
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides a special filler for marble adhesive and a preparation method thereof, belonging to the technical field of fine chemical engineering. Mixing calcium carbonate ore and sodium acrylate, and grinding to obtain first powder; the particle size of the first powder is 4-6 mu m; mixing calcium carbonate ore and sodium acrylate, and then carrying out ball milling to obtain second powder; the particle size of the second powder is 1.2-2.5 mu m; crushing wollastonite to obtain wollastonite powder; mixing the first powder, titanate and stearic acid for first modification to obtain first modified powder; mixing the wollastonite powder with titanate for second modification to obtain second modified powder; and mixing the second powder, the first modified powder and the second modified powder to obtain the special filler for the marble adhesive. The invention controls the particle size of the powder, so that the filler is more compact during filling, and the oil absorption value of the filler is reduced, thereby improving the plasticizing effect during colloid curing and improving the toughness.
Description
Technical Field
The invention relates to the technical field of fine chemical engineering, in particular to a special filler for marble glue and a preparation method thereof.
Background
Since ancient times, stone is popular with people as a building and decorative material, from great wall to township and from pizza batter tower to paris holy house, people can see the application of stone, however, natural stone often encounters the occurrence of stone fracture and crack phenomena in the mining and processing process, so that marble glue is needed to repair the stone, the stone becomes complete and beautiful, the use is not influenced, and unnecessary loss is avoided.
The marble glue mainly comprises unsaturated polyester, an accelerator, an initiator, a polymerization inhibitor, a light stabilizer, a filler and the like, a small amount of curing agent needs to be added when the marble glue is used, and the marble glue has the advantages of high curing speed, simplicity in operation, easiness in grinding and the like.
Disclosure of Invention
In view of this, the present invention aims to provide a filler special for marble glue and a preparation method thereof. The special filler for the marble adhesive prepared by the invention has good toughness.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of a special filler for marble adhesive, which comprises the following steps:
mixing calcium carbonate ore and sodium acrylate, and grinding to obtain first powder; the particle size of the first powder is 4-6 mu m;
mixing calcium carbonate ore and sodium acrylate, and then carrying out ball milling to obtain second powder; the particle size of the second powder is 1.2-2.5 mu m;
crushing wollastonite to obtain wollastonite powder;
mixing the first powder, titanate and stearic acid for first modification to obtain first modified powder;
mixing the wollastonite powder with titanate for second modification to obtain second modified powder;
and mixing the second powder, the first modified powder and the second modified powder to obtain the special filler for the marble adhesive.
Preferably, the particle size of the wollastonite powder is 18-25 μm.
Preferably, the amount of sodium acrylate used in the grinding and ball milling is independently 1 to 2 wt% of the calcium carbonate ore.
Preferably, the mass ratio of the first powder to the titanate to the stearic acid in the first modification is 1000: 3-7: 6-10.
Preferably, the mass ratio of the first powder to the titanate to the stearic acid in the first modification is 1000:3: 8.
Preferably, the mass ratio of the wollastonite powder to the titanate in the second modification is 1000: 3-7.
Preferably, the mass ratio of the first modified powder to the second powder is (25-30): 1.
Preferably, the mass of the second modified powder is 5-10% of the total mass of the first modified powder and the second powder.
Preferably, the mass ratio of the first modified powder to the second modified powder is 700:25: 58.
The invention also provides the special filler for the marble adhesive prepared by the preparation method in the technical scheme.
The invention provides a preparation method of a special filler for marble adhesive, which comprises the following steps: mixing calcium carbonate ore and sodium acrylate, and grinding to obtain first powder; the particle size of the first powder is 4-6 mu m; mixing calcium carbonate ore and sodium acrylate, and then carrying out ball milling to obtain second powder; the particle size of the second powder is 1.2-2.5 mu m; crushing wollastonite to obtain wollastonite powder; mixing the first powder, titanate and stearic acid for first modification to obtain first modified powder; mixing the wollastonite powder with titanate for second modification to obtain second modified powder; and mixing the second powder, the first modified powder and the second modified powder to obtain the special filler for the marble adhesive.
The invention controls the particle size of the powder, so that the filler is more compact during filling, and the oil absorption value of the filler is reduced, thereby improving the plasticizing effect during colloid curing and improving the toughness.
According to the invention, by compounding the calcium carbonate ore powder and the wollastonite powder, the hardness and the dimensional stability of the cured marble glue are improved by utilizing the characteristic of the conductive stress of the fibrous filler of the wollastonite powder, so that the cracking resistance of the marble glue after curing is improved.
The data of the examples show that the flexural modulus and the impact toughness of the special filler for the marble glue prepared by the invention are all stronger than those of the comparative examples, which shows that the toughness and the cracking resistance of the marble glue prepared by the examples are improved; the bonding strength is also stronger than that of the comparative example, which shows that the marble glue prepared by the embodiment has better infiltration effect on the base material and better powder dispersion effect than that of the comparative example, and has good plasticizing effect.
Drawings
FIG. 1 is a flow chart of the preparation of the special filler for marble glue in the embodiment of the present invention.
Detailed Description
The invention provides a preparation method of a special filler for marble adhesive, which comprises the following steps:
mixing calcium carbonate ore and sodium acrylate, and grinding to obtain first powder; the particle size of the first powder is 4-6 mu m;
mixing calcium carbonate ore and sodium acrylate, and then carrying out ball milling to obtain second powder; the particle size of the second powder is 1.2-2.5 mu m;
crushing wollastonite to obtain wollastonite powder;
mixing the first powder, titanate and stearic acid for first modification to obtain first modified powder;
mixing the wollastonite powder with titanate for second modification to obtain second modified powder;
and mixing the second powder, the first modified powder and the second modified powder to obtain the special filler for the marble adhesive.
In the present invention, unless otherwise specified, all the raw materials used are commercially available in the art.
Mixing calcium carbonate ore and sodium acrylate, and grinding to obtain first powder; the particle size of the first powder is 4-6 mu m.
In the invention, the dosage of the sodium acrylate in the grinding is preferably 1-2 wt% of the calcium carbonate ore.
In the present invention, the calcium carbonate ore is preferably ground after being washed and crushed.
In the invention, the particle size of the calcium carbonate ore is preferably 5-10 mm.
In the invention, the calcium carbonate ore is preferably high-quality calcium carbonate ore, the purity of calcium carbonate in the high-quality calcium carbonate ore is high, and introduced impurities such as magnesium, iron and the like are few, so that the performance of the marble adhesive is not influenced. The present invention is not particularly limited with respect to the specific parameters of the grinding.
In the present invention, the particle size of the first powder is preferably 5 μm.
Mixing calcium carbonate ore and sodium acrylate, and then carrying out ball milling to obtain second powder; the particle size of the second powder is 1.2-2.5 mu m.
In the invention, the usage amount of the sodium acrylate in the ball milling is preferably 1-2 wt% of calcium carbonate ore.
In the present invention, the calcium carbonate ore is preferably ground after being washed and crushed.
In the invention, the particle size of the calcium carbonate ore is preferably 5-10 mm.
In the invention, the calcium carbonate ore is preferably high-quality calcium carbonate ore, the purity of calcium carbonate in the high-quality calcium carbonate ore is high, and introduced impurities such as magnesium, iron and the like are few, so that the performance of the marble adhesive is not influenced.
The invention has no special limitation on the specific parameters of the ball milling.
In the present invention, the particle size of the second powder is preferably 2 μm.
The wollastonite is crushed to obtain wollastonite powder.
In the present invention, the particle diameter of the wollastonite powder is preferably 18 to 25 μm, and more preferably 20 μm.
In the present invention, the particle size of the wollastonite powder is a crystal length.
In the present invention, the wollastonite is preferably washed and crushed and then pulverized.
In the invention, the particle size of the wollastonite is preferably 5 to 10 mm.
In the present invention, the pulverization is preferably ring roll mill grinding.
The specific parameters of the ring roll mill grinding are not particularly limited in the invention.
After the first powder is obtained, the first powder, titanate and stearic acid are mixed for first modification, and the first modified powder is obtained.
In the invention, the mass ratio of the first powder to the titanate to the stearic acid in the first modification is preferably 1000: 3-7: 6-10, and more preferably 1000:3: 8.
In the present invention, the first modification is preferably carried out in a high-speed disperser. In the invention, the rotating speed of the high-speed dispersion machine is preferably 2500-2800 r/min.
In the invention, the stearic acid has the function of reducing the oil absorption value of the powder, so that the powder can be better and more easily infiltrated and dispersed in the preparation process of the marble adhesive, and the titanate has the function of improving the compatibility of the inorganic filler and the organic polyester and simultaneously improving the bonding effect of the marble adhesive and the base material.
According to the invention, the titanate and the stearic acid are preferably added into the first powder.
After wollastonite powder is obtained, the wollastonite powder and titanate are mixed for second modification, and second modified powder is obtained.
In the invention, the mass ratio of the wollastonite powder to the titanate in the second modification is preferably 1000: 3-7, and more preferably 1000: 5.
In the invention, the second modification can increase the compatibility of wollastonite powder and organic polyester resin, the combination of the wollastonite powder and the organic polyester resin is tighter, the adhesion of the prepared marble adhesive and a base material can be improved, and the integral mechanical property of the marble adhesive is improved.
After the second powder, the first modified powder and the second modified powder are obtained, the second powder, the first modified powder and the second modified powder are mixed to obtain the filler special for the marble adhesive.
In the invention, the mass ratio of the first modified powder to the second powder is preferably (25-30): 1.
In the present invention, the mass of the second modified powder is preferably 5 to 10% of the total mass of the first modified powder and the second powder.
In the present invention, the mass ratio of the first modified powder, the second powder, and the second modified powder is preferably 700:25:58, 250:10:13, or 300:10: 31.
The invention also provides the special filler for the marble adhesive prepared by the preparation method in the technical scheme.
In order to further illustrate the present invention, the fillers specifically used for marble glue and the preparation method thereof provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
FIG. 1 is a flow chart of the preparation of the special filler for marble glue in the embodiment of the present invention.
Example 1
Cleaning calcium carbonate ore, crushing the calcium carbonate ore in multiple stages to obtain calcium carbonate particles with the size of 5-10mm, grinding the obtained particles by a grinding or ball mill, adding 2 wt% o sodium acrylate as a grinding aid, grinding the particles by a classifier by controlling the rotating speed to obtain calcium carbonate powder with the average particle size of 5 microns and 2 microns, adding 3 wt% o titanate and 8 wt% o stearic acid into the calcium carbonate with the average particle size of 5 microns, and modifying the calcium carbonate with the average particle size of 8 microns by a high-speed dispersion machine. Cleaning high-quality wollastonite ore, crushing in multiple stages to obtain wollastonite particles with the size of 5-10mm, grinding the wollastonite particles by a ring roller mill, controlling the rotating speed and classifying to obtain needle-shaped wollastonite with the crystal length of 20 mu m, adding 5 wt% of per thousand titanate into the obtained needle-shaped wollastonite, and modifying by a high-speed dispersion machine. Adding the modified 5-micron calcium carbonate, the modified 2-micron calcium carbonate and the modified needle-like wollastonite into a high-speed dispersion machine according to the mass ratio of 250:10:13 in sequence, dispersing at a high speed of 1800r/min for 5min, collecting and packaging.
The results of the lot tests corresponding to example 1 are shown in table 1.
Table 1 test results of the corresponding lot of example 1
Example 2:
cleaning calcium carbonate ore, crushing the calcium carbonate ore in multiple stages to obtain calcium carbonate particles with the size of 5-10mm, grinding the obtained particles by a ball mill by adding 2 wt% o sodium acrylate serving as a grinding aid, grading the particles by a grader by controlling the rotating speed to obtain calcium carbonate powder with the average particle size of 5 microns and 2 microns, adding 3 wt% o titanate and 8 wt% o stearic acid into the calcium carbonate with the average particle size of 5 microns, and modifying the calcium carbonate with a high-speed dispersion machine. Cleaning high-quality wollastonite ore, crushing in multiple stages to obtain wollastonite particles with the size of 5-10mm, grinding the wollastonite particles by a ring roller mill, controlling the rotating speed and classifying to obtain needle-shaped wollastonite with the crystal length of 20 mu m, adding 5 per mill of titanate into the obtained needle-shaped wollastonite, and modifying by a high-speed dispersion machine. Adding the modified 5-micron calcium carbonate, the modified 2-micron calcium carbonate and the modified needle-like wollastonite into a high-speed dispersion machine according to the mass ratio of 700:25:58 in sequence, dispersing at a high speed of 1800r/min for 5min, collecting and packaging.
The results of the corresponding lot tests of example 2 are shown in table 2.
Table 2 test results of the corresponding lot in example 2
Example 3:
cleaning calcium carbonate ore, crushing the calcium carbonate ore in multiple stages to obtain calcium carbonate particles with the size of 5-10mm, grinding the obtained particles by a ball mill by adding 2 wt% o sodium acrylate serving as a grinding aid, grading the particles by a grader by controlling the rotating speed to obtain calcium carbonate powder with the average particle size of 5 microns and 2 microns, adding 3 wt% o titanate and 8 wt% o stearic acid into the calcium carbonate with the average particle size of 5 microns, and modifying the calcium carbonate with a high-speed dispersion machine. Cleaning high-quality wollastonite ore, crushing in multiple stages to obtain wollastonite particles with the size of 5-10mm, grinding the wollastonite particles by a ring roller mill, controlling the rotating speed and classifying to obtain needle-shaped wollastonite with the crystal length of 20 mu m, adding 5 per mill of titanate into the obtained needle-shaped wollastonite, and modifying by a high-speed dispersion machine. Adding the modified 5-micron calcium carbonate, the modified 2-micron calcium carbonate and the modified needle-like wollastonite into a high-speed dispersion machine according to the mass ratio of 300:10:31 in sequence, dispersing at a high speed of 1800r/min for 5min, collecting and packaging.
The results of the corresponding lot tests of example 3 are shown in Table 3.
Table 3 test results of the corresponding lot of example 3
Example 4
Cleaning calcium carbonate ore, crushing the calcium carbonate ore in multiple stages to obtain calcium carbonate particles with the size of 5-10mm, grinding the obtained particles by a grinding or ball mill, adding 2 wt% o sodium acrylate as a grinding aid, grinding the particles by a classifier by controlling the rotating speed to obtain calcium carbonate powder with the average particle size of 4 microns and 2.5 microns, adding 3 wt% o titanate and 8 wt% o stearic acid into the calcium carbonate with the average particle size of 4 microns, and modifying the calcium carbonate with the average particle size of 8 microns by a high-speed dispersion machine. Cleaning high-quality wollastonite ore, crushing in multiple stages to obtain wollastonite particles with the size of 5-10mm, grinding the wollastonite particles by a ring roller mill, controlling the rotating speed and classifying to obtain needle-shaped wollastonite with the crystal length of 18 mu m, adding 5 wt% of per thousand titanate into the obtained needle-shaped wollastonite, and modifying by a high-speed dispersion machine. Adding the modified calcium carbonate with the particle size of 4 mu m, the modified calcium carbonate with the particle size of 2.5 mu m and the modified needle-like wollastonite into a high-speed dispersion machine according to the mass ratio of 250:10:13 in sequence, dispersing at a high speed of 1800r/min for 5min, collecting and packaging.
Example 5
Cleaning calcium carbonate ore, crushing the calcium carbonate ore in multiple stages to obtain calcium carbonate particles with the size of 5-10mm, grinding the obtained particles by a grinding or ball mill, adding 2 wt% o sodium acrylate as a grinding aid, grinding the particles by a classifier by controlling the rotating speed to obtain calcium carbonate powder with the average particle size of 6 microns and 1.2 microns, adding 3 wt% o titanate and 8 wt% o stearic acid into the calcium carbonate with the average particle size of 4 microns, and modifying the calcium carbonate with a high-speed dispersion machine. Cleaning high-quality wollastonite ore, crushing in multiple stages to obtain wollastonite particles with the size of 5-10mm, grinding the wollastonite particles by a ring roller mill, controlling the rotating speed and classifying to obtain needle-shaped wollastonite with the crystal length of 25 mu m, adding 5 wt% of per thousand titanate into the obtained needle-shaped wollastonite, and modifying by a high-speed dispersion machine. Adding the modified calcium carbonate with the particle size of 4 mu m, the modified calcium carbonate with the particle size of 2.5 mu m and the modified needle-like wollastonite into a high-speed dispersion machine according to the mass ratio of 250:10:13 in sequence, dispersing at a high speed of 1800r/min for 5min, collecting and packaging.
Example 6
Cleaning calcium carbonate ore, crushing the calcium carbonate ore in multiple stages to obtain calcium carbonate particles with the size of 5-10mm, grinding the obtained particles by a grinding or ball mill, adding 2 wt% o sodium acrylate as a grinding aid, grinding the particles by a classifier by controlling the rotating speed to obtain calcium carbonate powder with the average particle size of 6 microns and 2.5 microns, adding 3 wt% o titanate and 8 wt% o stearic acid into the calcium carbonate with the average particle size of 4 microns, and modifying the calcium carbonate with a high-speed dispersion machine. Cleaning high-quality wollastonite ore, crushing in multiple stages to obtain wollastonite particles with the size of 5-10mm, grinding the wollastonite particles by a ring roller mill, controlling the rotating speed and classifying to obtain needle-shaped wollastonite with the crystal length of 25 mu m, adding 5 wt% of per thousand titanate into the obtained needle-shaped wollastonite, and modifying by a high-speed dispersion machine. Adding the modified calcium carbonate with the particle size of 4 mu m, the modified calcium carbonate with the particle size of 2.5 mu m and the modified needle-like wollastonite into a high-speed dispersion machine according to the mass ratio of 250:10:13 in sequence, dispersing at a high speed of 1800r/min for 5min, collecting and packaging.
Example 7
Cleaning calcium carbonate ore, crushing the calcium carbonate ore in multiple stages to obtain calcium carbonate particles with the size of 5-10mm, grinding the obtained particles by a grinding or ball mill, adding 2 wt% o sodium acrylate as a grinding aid, grinding the particles by a classifier by controlling the rotating speed to obtain calcium carbonate powder with the average particle size of 6 microns and 2.5 microns, adding 3 wt% o titanate and 8 wt% o stearic acid into the calcium carbonate with the average particle size of 4 microns, and modifying the calcium carbonate with a high-speed dispersion machine. Cleaning high-quality wollastonite ore, crushing in multiple stages to obtain wollastonite particles with the size of 5-10mm, grinding the wollastonite particles by a ring roller mill, controlling the rotating speed and classifying to obtain needle-shaped wollastonite with the crystal length of 18 mu m, adding 5 wt% of per thousand titanate into the obtained needle-shaped wollastonite, and modifying by a high-speed dispersion machine. Adding the modified calcium carbonate with the particle size of 4 mu m, the modified calcium carbonate with the particle size of 2.5 mu m and the modified needle-like wollastonite into a high-speed dispersion machine according to the mass ratio of 250:10:13 in sequence, dispersing at a high speed of 1800r/min for 5min, collecting and packaging.
The marble glue prepared in the above examples and comparative examples (conventional filler, active 800 mesh coarse whiting) is tested according to the method described in standard JC/T989-2016, and the test proportioning scheme is as follows: unsaturated polyester resin: 100g, light nano calcium: 70g, filler: 130g, styrene: 6g, p-benzoquinone: 0.03g, nitrogen-dimethyl-p-toluidine: the results are shown in Table 4, and it can be seen from Table 4 that the flexural modulus and impact toughness of the filler specially used for the marble adhesive prepared by the invention are all stronger than those of the comparative examples, which shows that the toughness and crack resistance of the marble adhesive prepared by the examples are improved; the bonding strength is also stronger than that of the comparative example, which shows that the marble glue prepared by the embodiment has better infiltration effect on the base material and dispersion effect of the powder than that of the comparative example, and has good plasticizing effect.
Table 4 results of performance test of marble adhesive prepared in examples 1 to 3 and comparative example
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. The preparation method of the special filler for the marble adhesive is characterized by comprising the following steps of:
mixing calcium carbonate ore and sodium acrylate, and grinding to obtain first powder; the particle size of the first powder is 4-6 mu m;
mixing calcium carbonate ore and sodium acrylate, and then carrying out ball milling to obtain second powder; the particle size of the second powder is 1.2-2.5 mu m;
crushing wollastonite to obtain wollastonite powder;
mixing the first powder, titanate and stearic acid for first modification to obtain first modified powder;
mixing the wollastonite powder with titanate for second modification to obtain second modified powder;
and mixing the second powder, the first modified powder and the second modified powder to obtain the special filler for the marble adhesive.
2. The preparation method according to claim 1, wherein the particle size of the wollastonite powder is 18 to 25 μm.
3. The method of claim 1, wherein the amount of sodium acrylate used in the grinding and ball milling is independently 1 to 2 wt% of the calcium carbonate ore.
4. The preparation method of claim 1, wherein the mass ratio of the first powder to the titanate to the stearic acid in the first modification is 1000: 3-7: 6-10.
5. The preparation method according to claim 1 or 4, wherein the mass ratio of the first powder, the titanate and the stearic acid in the first modification is 1000:3: 8.
6. The preparation method of claim 1, wherein the mass ratio of the wollastonite powder to the titanate in the second modification is 1000: 3-7.
7. The production method according to claim 1, wherein the mass ratio of the first modified powder to the second powder is (25-30): 1.
8. The method according to claim 1 or 7, wherein the mass of the second modified powder is 5 to 10% of the total mass of the first modified powder and the second powder.
9. The production method according to claim 8, wherein the mass ratio of the first modified powder to the second modified powder is 700:25: 58.
10. The filler special for the marble adhesive prepared by the preparation method of any one of claims 1 to 9.
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