CN116638667A - Calcium carbonate filling master batch and preparation method thereof - Google Patents
Calcium carbonate filling master batch and preparation method thereof Download PDFInfo
- Publication number
- CN116638667A CN116638667A CN202310628904.8A CN202310628904A CN116638667A CN 116638667 A CN116638667 A CN 116638667A CN 202310628904 A CN202310628904 A CN 202310628904A CN 116638667 A CN116638667 A CN 116638667A
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- stage
- mixture
- carbonate powder
- marble
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 250
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 125
- 238000011049 filling Methods 0.000 title claims abstract description 38
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000227 grinding Methods 0.000 claims abstract description 59
- 238000002156 mixing Methods 0.000 claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims description 109
- 239000004579 marble Substances 0.000 claims description 47
- 239000000203 mixture Substances 0.000 claims description 38
- 239000003607 modifier Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 24
- 239000002994 raw material Substances 0.000 claims description 19
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 18
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 18
- -1 polyethylene Polymers 0.000 claims description 17
- 239000004698 Polyethylene Substances 0.000 claims description 13
- 235000021355 Stearic acid Nutrition 0.000 claims description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 13
- 229920000573 polyethylene Polymers 0.000 claims description 13
- 239000008117 stearic acid Substances 0.000 claims description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007822 coupling agent Substances 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 150000007524 organic acids Chemical class 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 229920003169 water-soluble polymer Polymers 0.000 claims description 6
- 235000011089 carbon dioxide Nutrition 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 6
- 238000005469 granulation Methods 0.000 abstract description 4
- 230000003179 granulation Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 14
- 239000002985 plastic film Substances 0.000 description 13
- 229920006255 plastic film Polymers 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000012986 modification Methods 0.000 description 11
- 230000004048 modification Effects 0.000 description 11
- 235000013339 cereals Nutrition 0.000 description 10
- 238000005054 agglomeration Methods 0.000 description 8
- 230000002776 aggregation Effects 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000004132 cross linking Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 241000519995 Stachys sylvatica Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- SZTBMYHIYNGYIA-UHFFFAOYSA-N 2-chloroacrylic acid Chemical compound OC(=O)C(Cl)=C SZTBMYHIYNGYIA-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 125000002467 phosphate group Chemical class [H]OP(=O)(O[H])O[*] 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920001444 polymaleic acid Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 150000003335 secondary amines Chemical class 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000012258 stirred mixture Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 150000003871 sulfonates Chemical class 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000035553 feeding performance Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a calcium carbonate filling master batch and a preparation method thereof, and relates to the technical field of filling master batches. According to the invention, the calcium carbonate filling master batch with good uniformity is prepared by two-stage crushing, two-stage modified grinding, premixing, mixing extrusion and cooling granulation, no agglomerated calcium carbonate particles are arranged in the master batch, and the applicability is good.
Description
Technical Field
The invention relates to the technical field of filling master batches, in particular to a calcium carbonate filling master batch and a preparation method thereof.
Background
The calcium carbonate has the characteristics of high chemical stability, low cost, easy obtainment and the like, is an excellent inorganic filler, has wide application value in industries such as plastics, coatings, papermaking, rubber and the like, and is usually prepared into calcium carbonate filling master batch by mixing and mixing the calcium carbonate, carrier resin, auxiliary agent and the like for improving the application convenience of the calcium carbonate, so that the transportation is convenient, the production flow of enterprises is simplified, the production efficiency of the enterprises is improved, and dust in the production process of the enterprises is reduced.
However, the existing calcium carbonate filling master batch is poor in uniformity, and agglomerated calcium carbonate particles exist in the master batch, so that when the calcium carbonate filling master batch is applied to the production of plastic films, the internally agglomerated calcium carbonate particles cannot be opened, and a plurality of white spots, even hard particles, can be formed on the plastic films, so that the quality and the appearance of the plastic films are affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a calcium carbonate filling master batch and a preparation method thereof.
The invention provides a preparation method of a calcium carbonate filling master batch, which comprises the following steps of;
first-stage crushing, namely, sending the cleaned marble raw material into a jaw crusher for first-time crushing to obtain marble Dan Culiao with the grain size less than or equal to 100 mm;
secondary crushing, namely, feeding the marble Dan Culiao into a reaction crusher to perform secondary crushing to obtain marble Dan Xiliao with the grain diameter less than or equal to 40 mm;
first-stage modified grinding, namely uniformly stirring the marble Dan Xiliao and 2.5-3.5% of surface modifier, and then putting the mixture into a first grinding mill to grind the mixture to form first calcium carbonate powder with the particle size less than or equal to 100 mu m;
secondary modified grinding, namely uniformly stirring the first calcium carbonate powder and 7.5-8.5% of the surface modifier, and then putting the mixture into a second grinding mill to grind the mixture to form second calcium carbonate powder with the particle size less than or equal to 13 mu m;
premixing, namely adding 80-120 parts by weight of the second calcium carbonate powder, 7-11 parts by weight of linear low density polyethylene, 3.5-7.5 parts by weight of polyethylene wax and 0.6-1.0 part by weight of stearic acid into a mixer, and mixing for 15-45 minutes at 110-125 ℃ to form a mixture;
mixing and extruding, namely adding the mixture into a screw extruder, mixing and extruding to obtain a brace, setting the screw rotating speed of the screw extruder to be 450-650 r/min, and setting the mixing temperature of the screw extruder to be 110-125 ℃;
cooling and granulating, cooling the brace by using cold air at the temperature of 2-8 ℃, and cutting the cooled brace into calcium carbonate filling master batch with the length of 3-5 mm by using a granulator.
Specifically, before the primary crushing, the method further comprises the following steps:
the marble raw material is washed by a water gun with the pressure of 0.5-1.5 MPa, or is washed by an air gun with the pressure of 1.0-1.6 MPa.
Specifically, the air consumption temperature of the purging is in the range of 70-80 ℃.
Specifically, the surface modifier is one or more of a surfactant, a coupling agent, an organic oligomer, an organic acid and a water-soluble polymer.
Specifically, 1 to 5 parts of dry ice having a particle diameter of 1 to 3cm is added to the mixer at the time of the premixing.
Specifically, when the premixing is carried out, the second calcium carbonate powder, the linear low density polyethylene, the polyethylene wax and the stearic acid are mixed for 3 to 5 minutes at the temperature of 10 to 30 ℃, and then heated to the temperature of 110 to 125 ℃ and mixed for 15 to 45 minutes to form the mixture.
Specifically, the melt flow rate of the mixture is controlled to be 3-6 g/10min.
Specifically, the premixing includes:
in the first stage, the mixer mixes for 3 to 5 minutes at a speed of 50 to 80 revolutions per minute;
the second stage, the mixer mixes for 5min at the speed of 100-130 r/min;
in the third stage, the mixer mixes for 5min at a speed of 200-230 rpm;
a fourth stage, wherein the mixer mixes for 5min at a speed of 300-330 rpm;
repeating the second stage to the fourth stage 0 to 2 times.
Specifically, the screw extruder is a double screw extruder or a triple screw extruder.
The invention also provides a calcium carbonate filling master batch, which is prepared by the preparation method.
Compared with the prior art, the invention has the beneficial effects that:
the method comprises the steps of sequentially carrying out primary crushing, secondary crushing, primary modified grinding and secondary modified grinding on the cleaned marble to prepare the second calcium carbonate powder with the particle size less than or equal to 13 mu m, wherein the second calcium carbonate powder has uniform shape, regular shape and small particle difference, and has good dispersibility and fluidity; premixing the second calcium carbonate powder with a certain weight part of linear low density polyethylene, polyethylene wax and stearic acid to form a mixture, wherein each component in the mixture is uniformly dispersed, and the second calcium carbonate powder has good crosslinking property with the linear low density polyethylene; then mixing and extruding the mixture to obtain a brace, and further dispersing and mixing the components of the mixture in a screw extruder to ensure that the mixing uniformity of the second calcium carbonate powder and the linear low-density polyethylene is better and the occurrence of agglomerated calcium carbonate particles is avoided; finally, cooling and granulating the braces to obtain calcium carbonate filling master batch with good uniformity, wherein no agglomerated calcium carbonate particles are arranged in the braces, so that the calcium carbonate filling master batch has good applicability, and can not cause defects such as white spots, hard particles and the like of the plastic film when being applied to the production of the plastic film, thereby effectively improving the quality of the plastic film and improving the appearance of the plastic film.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for preparing a calcium carbonate filled masterbatch in an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
FIG. 1 shows a flow chart of a method for preparing a calcium carbonate filled masterbatch in an embodiment of the invention, comprising the following steps;
s1, primary crushing;
and (5) sending the cleaned marble raw material into a jaw crusher for first crushing to obtain marble Dan Culiao with the grain size less than or equal to 100 mm.
The surface of the marble raw material carries impurities such as soil, sand and the like, which can influence the whiteness, purity and the like of the subsequently prepared calcium carbonate powder, so that the marble raw material needs to be cleaned, and optionally, the marble raw material is washed by a water gun with the pressure of 0.5-1.5 MPa, and the impurities such as soil, sand and the like on the surface of the marble raw material can be easily washed away by water flow with the pressure, so that flying dust can be reduced; optionally, the marble raw material is purged by using an air gun with the pressure of 1.0-1.6 MPa, the impurities such as soil, sand and stone on the surface of the marble raw material can be purged easily by using the air flow with the pressure, water can be saved, further, the surface of the marble raw material can be sufficiently blown dry by using the hot air flow with the air temperature range of 70-80 ℃, the moisture carried by the marble raw material is reduced, the probability that powder adheres to the inside of a machine when the marble raw material is crushed is reduced, and the stable operation of the crusher is facilitated.
The jaw crusher is commonly called jaw crusher, a crushing cavity is formed by two jaw plates of a movable jaw and a static jaw, and the crusher which simulates the movement of the two jaws of an animal to finish the crushing operation of the material is widely applied to crushing various ores and massive materials, is firm and durable, is suitable for being used as a main crusher, has strong feeding capability, high yield, low noise, less dust, large crushing ratio and uniform discharging granularity, and can efficiently produce marble Dan Culiao with the grain size less than or equal to 100 mm.
S2, secondary crushing;
the marble Dan Culiao is fed into an impact crusher for secondary crushing to obtain the marble Dan Xiliao with the grain diameter less than or equal to 40mm, the impact crusher is a crushing machine for crushing materials by using impact energy, can treat materials with the side length of less than 100-500 mm, has the compression strength of 350MPa when the compression strength is high, has the advantages of large crushing ratio, cubic grains of crushed materials and the like, is suitable for crushing marble coarse materials, has the advantages of high production capacity and small discharge granularity, can efficiently produce the marble Dan Xiliao with the grain diameter less than or equal to 40mm, is convenient for subsequent modification and grinding, and reduces the grinding difficulty.
According to the invention, through two-stage crushing, the marble raw material can be crushed into the needed marble Dan Xiliao more quickly, the crushing procedure time is shortened, and the production efficiency is improved; the secondary crushing can be performed immediately after the primary crushing, so that continuous production is realized.
In some specific embodiments, the marble Dan Xiliao is also sun-dried, air-dried or dried, so that the water content of the marble fine material is reduced to below 1%, modified grinding is facilitated, powder agglomeration and adhesion in the grinding process are avoided, and the modified grinding efficiency is improved.
S3, first-stage modified grinding;
and (2) uniformly stirring the marble Dan Xiliao and 2.5-3.5% of the surface modifier, then putting the mixture into a first pulverizer to grind the mixture to form first calcium carbonate powder with the particle size less than or equal to 100 mu m, uniformly stirring the marble fine material and the surface modifier, and then putting the mixture into the first pulverizer, so that the marble fine material and the surface modifier are fully contacted, the modification effect is improved conveniently, and the use amount of the surface modifier is reduced.
The surface modifier is one or more of a surfactant, a coupling agent, an organic oligomer, an organic acid and a water-soluble polymer, and has good dispersing, lubricating and compatibility effects; the surface modifier is adsorbed on the surface of the first calcium carbonate powder, so that the surface energy between the powder bodies of the first calcium carbonate powder can be reduced, the intermolecular acting force is weakened, static electricity is eliminated, the first calcium carbonate powder is prevented from agglomerating, and the effect of uniform dispersion is achieved; the surface modifier can also reduce the risk of the first calcium carbonate powder adhering in the first flour mill, reduce the friction force among the powder bodies of the first calcium carbonate powder and increase the processing fluidity and uniformity of the first calcium carbonate powder; the surface modifier can also improve the compatibility of the first calcium carbonate powder with other substances, and is beneficial to the subsequent preparation of the calcium carbonate filling master batch.
The surface modifier can enhance the toughness, strength, hardness, dispersibility, fluidity and the like of the first calcium carbonate powder, and is convenient for continuous deep processing. Specifically, the surfactant includes anionic surfactants [ stearic acid (salts), sulfonates and esters thereof, higher phosphate salts and the like ], cationic surfactants [ higher amine salts (primary amine, secondary amine, tertiary amine and quaternary ammonium salts) ] and nonionic surfactants (such as polyethylene glycol, polyhydric alcohols) and the like; the coupling agent mainly comprises silane, titanate, aluminate, zircoaluminate and the like; the organic oligomer is mainly random polypropylene, polyethylene wax, epoxy resin and the like; the organic acid is mainly acrylic acid, methacrylic acid, butenoic acid, maleic acid, chloroacrylic acid and the like; the water-soluble polymer mainly comprises polyacrylic acid (salt) and its copolymer, polyvinyl alcohol, polymaleic acid, etc.
The surface modifier with proper proportion is added into the marble fine material, so that the dispersibility of the powder and the crosslinking property of the powder and other substances can be enhanced, the agglomeration probability of the first calcium carbonate powder is effectively reduced, and the performance of the first calcium carbonate powder serving as a filler is improved.
The first pulverizer is one of a ring roller mill, a Raymond mill or a vertical mill, has high grinding efficiency, strong grinding capacity, high yield and low energy consumption, can quickly refine marble Dan Xiliao into first calcium carbonate powder, can promote the compatibility of a surface modifier and powder, achieves the effect of coating modification, realizes the efficient output of the modified first calcium carbonate powder with the grain diameter less than or equal to 100 mu m, and shortens the time of primary modification grinding.
In some embodiments, when the primary modified milling is performed, further comprising:
introducing ion wind at 60-70 ℃ into the first pulverizer, wherein the ion wind is prepared by ionizing hot air by an ion blower through corona discharge to generate a large amount of positive and negative charges, and the positive and negative charges in the ion wind are mutually neutralized with the dissimilar charges on the powder so as to eliminate static electricity, so that the powder agglomeration is avoided, and the pulverizing efficiency is improved; meanwhile, the ion wind at 60-70 ℃ can also dry the powder, so that the water content of the powder is reduced, and the powder is prevented from adhering inside the equipment to influence the grinding efficiency; in addition, the ion wind at 60-70 ℃ can also adjust the working temperature of primary modified grinding, improve the uniform coating modification effect of the surface modifier, promote the fusion of the first calcium carbonate powder and the surface modifier and improve the modification efficiency.
Further, the wind speed of the ion wind is 3.4 m/s-5.4 m/s, the powder with the grain diameter less than or equal to 100 mu m can be taken away as qualified first calcium carbonate powder to enter the next working procedure, and the powder with the grain diameter more than 100 mu m can be kept in the first pulverizer for grinding, so that the subsequent secondary modified grinding is facilitated; the relative humidity of the ion wind is lower than 10%, so that the drying of the grinding environment of the primary modified grinding is guaranteed, the agglomeration of powder in the grinding process is prevented, the powder is prevented from adhering in the grinding cavity of the first grinding mill, and the efficiency of the primary modified grinding can be improved.
In order to realize continuous primary modified grinding, before marble fines and surface modifier are fed into the first pulverizer, the surface modifier is continuously added in a mode of being linked with the feeding speed of the marble Dan Xiliao, so that the marble fines and the surface modifier are rapidly and fully stirred and mixed, and the uniformly stirred mixture can be continuously fed into the first pulverizer.
S4, secondary modified grinding;
the first calcium carbonate powder and 7.5 to 8.5 percent of the surface modifier are stirred uniformly and then put into a second pulverizer to be ground to form second calcium carbonate powder with the particle size less than or equal to 13 mu m, and the first calcium carbonate powder and the surface modifier are stirred uniformly and then put into the second pulverizer, so that the first calcium carbonate powder and the surface modifier are fully contacted, the modification effect is improved conveniently, and the use amount of the surface modifier is reduced.
The surface modifier is one or more of a surfactant, a coupling agent, an organic oligomer, an organic acid and a water-soluble polymer, and has good dispersing, lubricating and compatibility effects; the surface modifier is adsorbed on the surface of the second calcium carbonate powder, so that the surface energy between the powder bodies of the second calcium carbonate powder can be reduced, the intermolecular acting force is weakened, static electricity is eliminated, the second calcium carbonate powder is prevented from agglomerating, and the effect of uniform dispersion is achieved; the surface modifier can also reduce the risk of the second calcium carbonate powder adhering to the second powder mill, reduce the friction force among the powder bodies of the second calcium carbonate powder and increase the processing fluidity and uniformity of the second calcium carbonate powder; the surface modifier can also improve the compatibility of the second calcium carbonate powder with other substances, and is beneficial to the subsequent preparation of the calcium carbonate filling master batch.
The surface modifier can enhance the toughness, strength, hardness, dispersibility, fluidity and the like of the second calcium carbonate powder, and is convenient for continuous deep processing. Specifically, the surfactant includes anionic surfactants [ stearic acid (salts), sulfonates and esters thereof, higher phosphate salts and the like ], cationic surfactants [ higher amine salts (primary amine, secondary amine, tertiary amine and quaternary ammonium salts) ] and nonionic surfactants (such as polyethylene glycol, polyhydric alcohols) and the like; the coupling agent mainly comprises silane, titanate, aluminate, zircoaluminate and the like; the organic oligomer is mainly random polypropylene, polyethylene wax, epoxy resin and the like; the organic acid is mainly acrylic acid, methacrylic acid, butenoic acid, maleic acid, chloroacrylic acid and the like; the water-soluble polymer mainly comprises polyacrylic acid (salt) and its copolymer, polyvinyl alcohol, polymaleic acid, etc.
The surface modifier with proper proportion is added into the first calcium carbonate powder to further increase the dispersibility of the powder and further enhance the crosslinking property of the powder and other substances, so that the agglomeration probability of the second calcium carbonate powder is obviously reduced, and the performance of the second calcium carbonate powder serving as a filler is improved.
The second pulverizer is one of a sand mill, a stirring mill or a ball mill, and can be filled with grinding media to sufficiently grind and modify the first calcium carbonate powder, further refine the particle size of the powder, improve the form of the powder, reduce the particle difference of the powder and obtain the modified second calcium carbonate powder with the particle size less than or equal to 13 mu m.
Specifically, the grinding medium comprises at least one of zirconium silicate beads, aluminum dioxide beads, zirconium dioxide beads and rare earth metal stabilized zirconium dioxide beads or steel balls, the filling rate of the grinding medium is 50-70%, the grinding medium and the first calcium carbonate powder continuously move up and down and left and right in the grinding cavity at the mutual replacement position, in the process, the grinding effect is achieved through the actions of the grinding medium on the extrusion, impact, shearing and the like of the first calcium carbonate powder, the refinement of the first calcium carbonate powder with the particle size less than or equal to 100 mu m is achieved, and the second calcium carbonate powder with the particle size less than or equal to 13 mu m is obtained.
Specifically, when the diameter of the grinding medium is 0.5-0.75 mm, the filling rate of the grinding medium is 50-60%; when the diameter of the grinding medium is 1-10 mm, the filling rate of the grinding medium is 60-65%; when the diameter of the grinding medium is 15-25 mm, the filling rate of the grinding medium is 65-70%.
In order to realize continuous secondary modified grinding, the surface modifier is continuously added in a mode of being linked with the feeding speed of the first calcium carbonate powder before the first calcium carbonate powder and the surface modifier are fed into the second pulverizer, so that the first calcium carbonate powder and the surface modifier are conveniently and fully stirred and mixed rapidly, and the uniformly stirred mixture can be continuously fed into the second pulverizer.
Further, when the secondary modified grinding is carried out, the working temperature of the secondary modified grinding is controlled to be 130-180 ℃, so that the fusion of the surface modifier and the calcium carbonate powder can be effectively promoted, the modification efficiency is improved, and the modification effect is enhanced.
According to the invention, through two-stage modified grinding, marble fine materials are fully refined and modified to obtain second calcium carbonate powder, and the second calcium carbonate powder is uniform in form, regular in particle shape, small in particle difference and good in dispersibility and flowability; in addition, by adopting a two-stage modified grinding mode, the excellent modification effect can be realized by using less surface modifying agents, and the use cost of the surface modifying agents is reduced; the secondary modified grinding is continuously carried out next to the primary modified grinding, so that the modifying and grinding time is shortened, and the production efficiency is effectively improved.
In some embodiments, after the secondary modified milling, further comprising:
and removing iron, namely removing iron from the second calcium carbonate powder by using an electromagnetic dry powder iron remover. The marble raw material may contain iron, and during the processing of the powder, the abrasion of crushing equipment, grinding equipment and the like can cause finer metal particles to enter the powder, which can affect the whiteness of the powder, even form red and brown spots in the calcium carbonate filling master batch, affect the appearance of the product, and also can cause the calcium carbonate filling master batch to affect the quality and appearance of the plastic film when being applied to the preparation of the plastic film.
The electromagnetic dry powder iron remover has high-intensity electromagnetic field, can automatically remove iron, has high iron removing efficiency and convenient use, and is suitable for removing iron from powder.
S5, premixing;
according to parts by weight, 80 to 120 parts of the second calcium carbonate powder, 7 to 11 parts of linear low-density polyethylene, 3.5 to 7.5 parts of polyethylene wax and 0.6 to 1.0 part of stearic acid are taken and put into a mixer, mixed for 15 to 45 minutes at the temperature of 110 to 125 ℃ to form a mixture, and the melted linear low-density polyethylene, polyethylene wax and stearic acid are blended into the second calcium carbonate powder to form a uniform and stable mixture, wherein the larger the weight part of the second calcium carbonate powder is, the larger the proportion of the second calcium carbonate powder is, and the lower the raw material cost of the prepared calcium carbonate filling master batch is; the linear low density polyethylene is a carrier resin and can be crosslinked with the second calcium carbonate powder to form a stable system; the polyethylene wax has good lubricity, can prevent adhesion, promotes the uniform dispersion of the second calcium carbonate powder, and prevents the second calcium carbonate powder from agglomerating in the process of crosslinking with the linear low-density polyethylene; the stearic acid can improve the fluidity of the linear low-density polyethylene in a molten state, and enhance the crosslinking effect of the second calcium carbonate powder and the linear low-density polyethylene, thereby improving the uniformity and stability of the mixture.
Each material is premixed and then enters the subsequent mixing extrusion process, so that the uniformity of the material is effectively ensured, the mixing difficulty is reduced, and uneven distribution of the second calcium carbonate powder is avoided.
In some specific embodiments, 1-5 parts of dry ice is added into the mixer during the premixing, the particle size of the dry ice is 1-3 cm, a large amount of carbon dioxide is released when a proper amount of small dry ice participates in the premixing, the state of the mixture can be adjusted, and the mixture is prevented from becoming pasty to cause difficult discharging; simultaneously, carbon dioxide can assist mixing, takes away remaining moisture, promotes material mixing effect, reduces the agglomeration of second calcium carbonate powder.
In some embodiments, when the premixing is performed, the second calcium carbonate powder, the linear low density polyethylene, the polyethylene wax and the stearic acid are mixed for 3-5 min at 10-30 ℃, then heated to 110-125 ℃ and mixed for 15-45 min to form the mixture, the materials are uniformly mixed at normal temperature, and then heated to promote the melting of the linear low density polyethylene, the polyethylene wax and the stearic acid, so that the melted materials are fully and uniformly mixed with the second calcium carbonate powder, and the risk of agglomeration of the second calcium carbonate powder is reduced.
Further, controlling the melt flow rate of the mixture to be 3-6 g/10min, and if the melt flow rate is less than 3g/10min, discharging is difficult, so that the production efficiency is affected; if the melt flow rate is more than 6g/10min, the subsequent mixing extrusion is not facilitated, and the formed bracing piece has insufficient toughness.
Specifically, the premixing includes:
the first stage, in which the mixer mixes materials at a speed of 50-80 rpm for 3-5 min, and the materials are mixed uniformly at a lower rotation speed, wherein the first stage is carried out at a temperature of 10-30 ℃;
the second stage, the mixer mixes for 5min at the speed of 100-130 r/min;
in the third stage, the mixer mixes for 5min at a speed of 200-230 rpm;
a fourth stage, wherein the mixer mixes for 5min at a speed of 300-330 rpm;
repeating the second to fourth stages 0-2 times, wherein the second to fourth stages are performed at 110-125 ℃.
The rotation speed of the mixer is increased in stages from the first stage to the fourth stage, so that the rotation speed of the mixer is matched with the mixing state of materials, better mixing effect is realized, the uniformity of material mixing is improved, and material agglomeration is avoided; and then, optionally, repeating the second stage to the fourth stage for 0-2 times, so as to conveniently adjust the state of the mixture, and enable the mixing state, the melt flow rate and the like of the mixture to meet the requirements of subsequent procedures.
S6, mixing and extruding;
putting the mixture into a screw extruder for mixing and extruding to obtain a brace, setting the screw rotating speed of the screw extruder to be 450-650 r/min, setting the mixing temperature of the screw extruder to be 110-125 ℃, and enabling the screw extruder to obtain further plasticization and mixing by means of pressure and shearing force generated by rotation of the screw at a certain temperature, extruding the mixture through a die to form the brace, so that subsequent granulation is facilitated.
Specifically, the screw extruder is a double screw extruder or a triple screw extruder, and the double screw extruder has the characteristics of good feeding performance, mixing plasticizing performance, exhaust performance, extrusion stability and the like, and is common granulation equipment; the three-screw extruder has better mixing plasticizing performance than a double-screw extruder, and the material has short residence time at high temperature, thereby effectively saving energy and reducing emission.
S7, cooling and granulating;
cooling the brace by using cold air with the temperature of 2-8 ℃, cutting the cooled brace into calcium carbonate filling master batches with the length of 3-5 mm by using a granulator, and cooling the brace by using cold air to keep the brace dry, so that the calcium carbonate filling master batches obtained by cutting the brace are kept in a dry state without additional drying; the calcium carbonate filling master batch with the length of 3-5 mm is convenient to use, can be quickly melted in a short time, and can be quickly and uniformly mixed with materials such as matrix resin.
Further, after the cooling and dicing, the method further comprises: and packaging, namely bagging and sealing according to preset specifications to form a calcium carbonate filling master batch package, wherein each bag of the calcium carbonate filling master batch package is added with 0.1-0.3% by weight of a drying agent package, and the packaging is sealed and the drying agent package is added, so that the calcium carbonate filling master batch can be prevented from being wetted, and the stability of the properties of the calcium carbonate filling master batch is ensured.
The method comprises the steps of sequentially carrying out primary crushing, secondary crushing, primary modified grinding and secondary modified grinding on the cleaned marble to prepare the second calcium carbonate powder with the particle size less than or equal to 13 mu m, wherein the second calcium carbonate powder has uniform shape, regular shape and small particle difference, and has good dispersibility and fluidity; premixing the second calcium carbonate powder with a certain weight part of linear low density polyethylene, polyethylene wax and stearic acid to form a mixture, wherein each component in the mixture is uniformly dispersed, and the second calcium carbonate powder has good crosslinking property with the linear low density polyethylene; then mixing and extruding the mixture to obtain a brace, and further dispersing and mixing the components of the mixture in a screw extruder to ensure that the mixing uniformity of the second calcium carbonate powder and the linear low-density polyethylene is better and the occurrence of agglomerated calcium carbonate particles is avoided; finally, cooling and granulating the braces to obtain calcium carbonate filling master batch with good uniformity, wherein no agglomerated calcium carbonate particles are arranged in the braces, so that the calcium carbonate filling master batch has good applicability, and can not cause defects such as white spots, hard particles and the like of the plastic film when being applied to the production of the plastic film, thereby effectively improving the quality of the plastic film and improving the appearance of the plastic film.
In the invention, the primary crushing and the secondary crushing can be carried out on the mining site of the marble raw material, and the marble raw material is crushed into the marble Dan Xiliao, so that the transportation and the loading and unloading are more convenient; the primary modified grinding, the secondary modified grinding, the premixing, the mixing extrusion and the cooling granulation can be performed in the same factory building, so that the quality of intermediate products in each process flow can be conveniently monitored, the quality control is convenient, and the stability of the calcium carbonate filling master batch product is ensured; in addition, modification, grinding, mixing, granulating and the like are completed in the same factory building, so that the cost of packaging, transportation and the like of the calcium carbonate powder is saved, the problems of denaturation, pollution and the like of the calcium carbonate powder can be avoided, and the production process of the calcium carbonate filling master batch is more efficient and energy-saving.
The foregoing describes in detail the calcium carbonate filled masterbatch and the preparation method thereof provided by the embodiments of the present invention, and specific examples should be adopted herein to illustrate the principles and embodiments of the present invention, and the foregoing examples are only for helping to understand the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. The preparation method of the calcium carbonate filling master batch is characterized by comprising the following steps of;
first-stage crushing, namely, sending the cleaned marble raw material into a jaw crusher for first-time crushing to obtain marble Dan Culiao with the grain size less than or equal to 100 mm;
secondary crushing, namely, feeding the marble Dan Culiao into a reaction crusher to perform secondary crushing to obtain marble Dan Xiliao with the grain diameter less than or equal to 40 mm;
first-stage modified grinding, namely uniformly stirring the marble Dan Xiliao and 2.5-3.5% of surface modifier, and then putting the mixture into a first grinding mill to grind the mixture to form first calcium carbonate powder with the particle size less than or equal to 100 mu m;
secondary modified grinding, namely uniformly stirring the first calcium carbonate powder and 7.5-8.5% of the surface modifier, and then putting the mixture into a second grinding mill to grind the mixture to form second calcium carbonate powder with the particle size less than or equal to 13 mu m;
premixing, namely adding 80-120 parts by weight of the second calcium carbonate powder, 7-11 parts by weight of linear low density polyethylene, 3.5-7.5 parts by weight of polyethylene wax and 0.6-1.0 part by weight of stearic acid into a mixer, and mixing for 15-45 minutes at 110-125 ℃ to form a mixture;
mixing and extruding, namely adding the mixture into a screw extruder, mixing and extruding to obtain a brace, setting the screw rotating speed of the screw extruder to be 450-650 r/min, and setting the mixing temperature of the screw extruder to be 110-125 ℃;
cooling and granulating, cooling the brace by using cold air at the temperature of 2-8 ℃, and cutting the cooled brace into calcium carbonate filling master batch with the length of 3-5 mm by using a granulator.
2. The method of preparing as claimed in claim 1, further comprising, prior to performing the primary crushing:
the marble raw material is washed by a water gun with the pressure of 0.5-1.5 MPa, or is washed by an air gun with the pressure of 1.0-1.6 MPa.
3. The method of claim 2, wherein the purge has a service temperature in the range of 70 to 80 ℃.
4. The method of claim 1, wherein the surface modifier is one or more of a surfactant, a coupling agent, an organic oligomer, an organic acid, and a water-soluble polymer.
5. The method according to claim 1, wherein 1 to 5 parts of dry ice having a particle diameter of 1 to 3cm is added to the mixer at the time of the premixing.
6. The method according to claim 1, wherein the second calcium carbonate powder, the linear low density polyethylene, the polyethylene wax and the stearic acid are mixed at 10 to 30 ℃ for 3 to 5 minutes, and then heated to 110 to 125 ℃ and mixed for 15 to 45 minutes to form the mixture.
7. The method of claim 1, wherein the melt flow rate of the blend is controlled to be 3 to 6g/10min.
8. The method of preparing according to claim 1, wherein the premixing comprises:
in the first stage, the mixer mixes for 3 to 5 minutes at a speed of 50 to 80 revolutions per minute;
the second stage, the mixer mixes for 5min at the speed of 100-130 r/min;
in the third stage, the mixer mixes for 5min at a speed of 200-230 rpm;
a fourth stage, wherein the mixer mixes for 5min at a speed of 300-330 rpm;
repeating the second stage to the fourth stage 0 to 2 times.
9. The method of claim 1, wherein the screw extruder is a twin screw extruder or a triple screw extruder.
10. A calcium carbonate filled masterbatch, characterized in that it is obtained by the preparation method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310628904.8A CN116638667A (en) | 2023-05-31 | 2023-05-31 | Calcium carbonate filling master batch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310628904.8A CN116638667A (en) | 2023-05-31 | 2023-05-31 | Calcium carbonate filling master batch and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116638667A true CN116638667A (en) | 2023-08-25 |
Family
ID=87624278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310628904.8A Pending CN116638667A (en) | 2023-05-31 | 2023-05-31 | Calcium carbonate filling master batch and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116638667A (en) |
-
2023
- 2023-05-31 CN CN202310628904.8A patent/CN116638667A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100478570B1 (en) | Molded lump and production method therefor | |
| CN101376718B (en) | Method for recycling waste polyurethane | |
| JP2006507928A (en) | Fine grinding method for vulcanized rubber materials | |
| JPS63207617A (en) | Method for producing inorganic filler-containing polyolefin resin composition | |
| US6433030B1 (en) | Method for processing coating powder waste and coating powders thus obtained | |
| CN101831099B (en) | Method for preparing full-dispersion polyethylene color masterbatch | |
| CN1325540C (en) | Polyethylene composition for the production of peroxide crosslinked polyethylene | |
| CN116638667A (en) | Calcium carbonate filling master batch and preparation method thereof | |
| WO2013076783A1 (en) | Synthetic wood manufacturing method and synthetic wood | |
| JPH09123169A (en) | Thermoplastic resin synthetic material with plastic bottle as material, manufacture thereof, thermoplastic resin molding using the material and manufacture thereof | |
| EP0643737B1 (en) | Conversion of powdered polymers | |
| JP3846825B2 (en) | Method for producing epoxy resin composition for encapsulating granular semiconductor | |
| CN113942214A (en) | Method and equipment for mixing rubber by double-screw extruder | |
| CN108395604A (en) | A super-concentrated carrier-free plastic masterbatch and its preparation process and production system | |
| JP3444383B2 (en) | Antistatic masterbatch color for thermoplastic resin and method for producing the same | |
| EP1123945B1 (en) | Conversion of powdered carbomers | |
| JP2002166462A (en) | Method and system for manufacturing wood flour type composite material | |
| KR102398913B1 (en) | Manufacturing apparatus for molded articles, method thereof and molded articles | |
| KR20210098737A (en) | Regeneration method of scrap of polyolefin foam | |
| CN110818985A (en) | Thermoplastic plastic powder and processing technology thereof | |
| CN111057295A (en) | Foaming master batch and preparation method thereof | |
| CN113817271B (en) | Dihydrazide pre-dispersed masterbatch particle composition and preparation method thereof | |
| JP3248528B2 (en) | Granular additive for synthetic resin and method for producing the same | |
| CN118344746A (en) | Regular flow grain wood-plastic composite material and preparation method thereof | |
| JP2002167514A (en) | Wood meal-based composite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |