CN115946257A - Preparation method of ultra-dispersed ceramic white master batch - Google Patents
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- CN115946257A CN115946257A CN202211708890.2A CN202211708890A CN115946257A CN 115946257 A CN115946257 A CN 115946257A CN 202211708890 A CN202211708890 A CN 202211708890A CN 115946257 A CN115946257 A CN 115946257A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 34
- 239000000919 ceramic Substances 0.000 title claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 123
- 238000002156 mixing Methods 0.000 claims abstract description 77
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 58
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 38
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 38
- 239000003063 flame retardant Substances 0.000 claims abstract description 38
- 239000002270 dispersing agent Substances 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 239000011347 resin Substances 0.000 claims abstract description 35
- 239000000049 pigment Substances 0.000 claims abstract description 29
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 239000012257 stirred material Substances 0.000 claims abstract description 17
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 13
- 238000007664 blowing Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 26
- 239000012745 toughening agent Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 18
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 239000001038 titanium pigment Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 4
- HWXBQOWZWWYBLY-UHFFFAOYSA-N C1(=CC=CC=C1)S(=O)(=O)OS(=O)(=O)C=1C=CC=CC1.[K] Chemical compound C1(=CC=CC=C1)S(=O)(=O)OS(=O)(=O)C=1C=CC=CC1.[K] HWXBQOWZWWYBLY-UHFFFAOYSA-N 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
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- -1 polyol compound Chemical class 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 7
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Abstract
The invention relates to the technical field of ultra-dispersed ceramic white master batches, and discloses a preparation method of an ultra-dispersed ceramic white master batch, which comprises the following preparation steps: 1) Mixing the flame retardant, the antioxidant, the dispersing agent, the flexibilizer, the titanium dioxide and the pigment to form a mixture; 2) Stirring the mixture and the carrier resin to form a stirred material; 3) Extruding and granulating the stirred material to form the ultra-dispersed white porcelain master batch; by adding the dispersing agent, a full grain extraction process is not required in the preparation process, the preparation cost is greatly reduced, the preparation efficiency is improved, the quantitative production can be realized, and the physical property parameters and the product comprehensive performance of the prepared white porcelain master batch are greatly improved; and the flame retardant, the antioxidant, the dispersant, the flexibilizer, the titanium dioxide and the pigment are uniformly mixed to form a mixture, and then the mixture and the carrier resin are uniformly stirred to uniformly diffuse the carrier resin, so that the ultra-dispersed ceramic white master batch is prepared.
Description
Technical Field
The invention relates to the technical field of super-dispersed ceramic white master batches, and particularly relates to a preparation method of a super-dispersed ceramic white master batch.
Background
Such as a switch panel, is a common electric device used in life to turn on or off an electric circuit.
At present, a switch panel is generally made of a ceramic white master batch mainly containing carrier resin, and in the process of preparing the ceramic white master batch, in order to overcome the defect of uneven diffusion of the carrier resin, the ceramic white master batch is produced by adopting a full grain extraction process, so that the problem of injection molding of a jack of the switch panel caused by uneven diffusion of the carrier resin can be solved.
In the prior art, the full grain extraction process is adopted in the preparation process of the ceramic white master batch, so that the preparation cost is high, the quantitative production is not facilitated, and the physical property parameters and the comprehensive performance of the product produced by the full grain extraction process are greatly reduced.
Disclosure of Invention
The invention aims to provide a preparation method of a super-dispersed ceramic white master batch, and aims to solve the problem that a full grain extraction process is required in the preparation method of the super-dispersed ceramic white master batch in the prior art.
The invention discloses a preparation method of a super-dispersed ceramic white master batch, which comprises the following preparation steps:
1) According to the mass percentage, 96.8 to 99.35 percent of carrier resin, 0.04 to 0.25 percent of flame retardant, 0.01 to 0.15 percent of antioxidant, 0.1 to 0.3 percent of dispersant, 0.3 to 0.5 percent of flexibilizer, 1 to 3 percent of titanium pigment and 0 to 1 percent of pigment are provided; the flame retardant, the antioxidant, the dispersant, the flexibilizer, the titanium dioxide and the pigment are in solid particles, and the carrier resin is in a fluid state;
placing the flame retardant, the antioxidant, the dispersing agent, the flexibilizer, the titanium dioxide and the pigment in a mixer for uniform mixing to form a mixture; the mixing machine is provided with a mixing cavity, the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are pre-mixed outside the mixing cavity and then poured into the mixing cavity, and in the mixing cavity, the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are blown by high-pressure gas to be suspended for mixing;
2) Placing the mixture and the carrier resin in a stirrer and stirring uniformly to form a stirred material;
3) And placing the stirred material in a double-screw extruder for extrusion granulation to form the ultra-dispersed ceramic white master batch.
Further, the carrier resin is at least one of PC resin, ABS resin and PP resin; the PC resin has a melt index of 10MI to 50MI, and the ABS resin has a melt index of 7MI to 30 MI.
Further, the flame retardant is one or more of a silsesquioxane flame retardant, a phosphate flame retardant or potassium 3-benzenesulfonyl benzene sulfonate.
Further, the antioxidant is a hindered phenol antioxidant or an auxiliary antioxidant.
Further, the dispersing agent is one or more of polymer wax, aliphatic multifunctional modifier and polyalcohol compounds.
Further, the toughening agent is one or more of MBS, copolymerized methyl methacrylate and butadiene-styrene; the titanium dioxide is one or more of titanium dioxide R248, TC30, 104 and 108.
Further, the mixer comprises a mixing barrel, wherein the mixing barrel is provided with the mixing cavity; the mixing barrel is internally provided with an annular cavity which is mixed with the mixing cavity and is circumferentially arranged, the inner side wall of the mixing barrel is provided with a plurality of lateral air holes, and the annular cavity is communicated with the mixing cavity through the lateral air holes; the lateral holes are circumferentially arranged along the circumferential direction and the axial direction of the mixing barrel at intervals;
the annular cavity is communicated with an inflating device through an air pipe, and the inflating device blows high-pressure air into the annular cavity through the air pipe; a variable pressure pipe is arranged at the central position of the mixing cavity, and a variable pressure cavity is arranged in the variable pressure pipe; the variable pressure pipe is internally provided with a plurality of air holes, the variable pressure cavity is communicated with the mixing cavity through the plurality of air holes, and the variable pressure pipe is communicated with the air blowing and sucking equipment;
when the air blowing and sucking equipment performs air blowing operation on the variable pressure cavity, the air blowing and sucking equipment blows air into the variable pressure cavity, and the variable pressure cavity is in a high-pressure state; when the air blowing and sucking equipment performs air sucking operation on the variable pressure cavity, the air blowing and sucking equipment sucks gas in the variable pressure cavity, and the variable pressure cavity is in a low-pressure state;
in the preparation step 1), after the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are placed in a mixing cavity, blowing high-pressure gas into the annular cavity by the inflating equipment, wherein the high-pressure gas enters the mixing cavity through the lateral holes, and blows the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment to be mixed in a suspension state;
and in the process of mixing the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment in the mixing cavity, the air blowing and sucking equipment alternately performs air blowing operation and air sucking operation on the variable pressure cavity.
Further, the stirring machine is provided with a stirring cylinder, and a stirring cavity which is longitudinally arranged is arranged in the stirring cylinder; a central shaft which is longitudinally arranged is arranged in the center of the stirring cavity, a plurality of stirring shafts are arranged on the periphery of the central shaft, and the stirring shafts are circumferentially arranged along the circumferential direction of the central shaft at intervals;
a plurality of rotating shafts which are longitudinally arranged are arranged in the stirring cavity and are circumferentially arranged along the circumferential direction of the stirring cavity; the periphery of the rotating shafts is covered with an elastic layer, the outer side walls of adjacent rotating shafts are mutually abutted, and the outer side wall of each rotating shaft is abutted against the inner side wall of the stirring cavity; an enclosing area is formed between the outer side wall of the adjacent rotating shaft and the inner side wall of the stirring cavity in an enclosing way, the top of the enclosing area is communicated with the stirring cavity, and the bottom of the enclosing area is communicated with the stirring cavity;
in the preparation step 2), after the mixture and the carrier resin are placed in the stirring cavity, the central shaft drives the stirring shafts to rotate, the mixture and the carrier are stirred to form a stirred material, meanwhile, the rotating shafts rotate, and the stirred material is extruded in the enclosed area after being rolled into the enclosed area by the rotating shafts, and returns to the stirring cavity from the top and the bottom of the enclosed area;
when the stirring materials pass through the adjacent rotating shafts and are rolled into the enclosed area, the elastic layer on the periphery of the rotating shafts is compressed by extrusion, and the stirring materials are reversely extruded.
Furthermore, a plurality of swinging pieces are arranged on the periphery of the stirring shaft, the inner ends of the swinging pieces are hinged to the stirring shaft, the outer end of the stirring shaft extends outwards, and the swinging pieces are arranged at intervals and circumferentially along the circumferential direction of the stirring shaft; a stirring interval is arranged between the adjacent swinging pieces, a limiting spring is arranged in the stirring interval, and two ends of the limiting spring are respectively and correspondingly connected with the adjacent swinging pieces;
in the preparation step 2), when the central shaft drives the stirring shafts to rotate, the stirring shafts are extruded by the stirred materials, the swinging pieces swing and stretch the limiting springs or compress the limiting springs, and after the limiting springs are stretched or compressed, the limiting springs exert a reset effect on the swinging pieces to drive the swinging pieces to reset and swing.
Furthermore, a plurality of hollow grooves are formed in the swinging piece, a plurality of bent channels are formed on two sides of each hollow groove, inner ends of the bent channels are communicated with the hollow grooves, and outer ends of the bent channels penetrate through the side face of the swinging piece to form a plurality of penetrating openings which are arranged at intervals;
in the preparation step 2), when the stirring material is stirred in the stirring cavity, the stirring material is dispersed into the hollow groove through the plurality of through openings and the plurality of curved channels and collected together with the rotation of the swinging piece, then passes through the plurality of curved channels, and is placed in the stirring cavity through the plurality of through openings.
Compared with the prior art, the preparation method of the ultra-dispersed white porcelain master batch provided by the invention has the advantages that by adding the dispersing agent, a full grain extraction process is not required in the preparation process, the preparation cost is greatly reduced, the preparation efficiency is improved, the quantitative production can be realized, and the physical property parameters and the product comprehensive performance of the prepared white porcelain master batch are greatly improved; and the flame retardant, the antioxidant, the dispersant, the flexibilizer, the titanium pigment and the pigment are uniformly mixed to form a mixture, and then the mixture and the carrier resin are uniformly stirred to uniformly diffuse the carrier resin.
Drawings
FIG. 1 is a schematic interior view of a mixing tub provided by the present invention;
FIG. 2 is a schematic view of the inside of a mixing drum provided by the present invention;
FIG. 3 is a schematic front view of the present invention showing the connection between the central shaft and the stirring shaft;
FIG. 4 is a schematic front view of the hollow channel provided by the present invention in communication with a tortuous path.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-4, preferred embodiments of the present invention are shown.
The preparation method of the ultra-dispersed ceramic white master batch comprises the following preparation steps:
1) According to the mass percentage, 96.8 to 99.35 percent of carrier resin, 0.04 to 0.25 percent of flame retardant, 0.01 to 0.15 percent of antioxidant, 0.1 to 0.3 percent of dispersant, 0.3 to 0.5 percent of flexibilizer, 1 to 3 percent of titanium pigment and 0 to 1 percent of pigment are provided; the flame retardant, the antioxidant, the dispersant, the flexibilizer, the titanium pigment and the pigment are in solid particles, and the carrier resin is in a fluid state;
putting the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment into a mixer, and uniformly mixing to form a mixture; the mixing machine is provided with a mixing cavity 102, the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are pre-mixed outside the mixing cavity 102 and then poured into the mixing cavity 102, and in the mixing cavity 102, the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are blown by high-pressure gas to be suspended for mixing;
2) Placing the mixture and the carrier resin in a stirrer and stirring uniformly to form a stirred material;
3) And placing the stirred material in a double-screw extruder for extrusion granulation to form the ultra-dispersed ceramic white master batch.
According to the preparation method of the ultra-dispersed ceramic white master batch, the dispersing agent is added, a full grain extraction process is not needed in the preparation process, the preparation cost is greatly reduced, the preparation efficiency is improved, the quantitative production can be realized, and the physical property parameters and the product comprehensive performance of the prepared ceramic white master batch are greatly improved; and the flame retardant, the antioxidant, the dispersant, the flexibilizer, the titanium pigment and the pigment are uniformly mixed to form a mixture, and then the mixture and the carrier resin are uniformly stirred to uniformly diffuse the carrier resin.
In the process of manufacturing switch panels and the like, the ultra-dispersed ceramic white master batch prepared by the method is mixed with general raw materials in a mixing ratio of 1 to 5-1.
The ultra-dispersed white porcelain master batch in the embodiment is used for preparing switch panels and the like, so that the defects of injection molding bonding lines of jacks of the switch panels and panel color mixing are overcome on the basis of greatly reducing the cost, the attractiveness of the switch panels is improved, and the decorative performance of the switch panels is realized.
As a preferred embodiment, the carrier resin is at least one of PC resin, ABS resin, PP resin; the melt index of the PC resin is between 10MI and 50MI, and the melt index of the ABS resin is between 7MI and 30 MI.
As a preferred embodiment, the flame retardant is one or more of a silsesquioxane flame retardant, a phosphate flame retardant or potassium 3-benzenesulfonyl benzenesulfonate.
In a preferred embodiment, the antioxidant is a hindered phenol antioxidant or a secondary antioxidant.
In a preferred embodiment, the dispersant is one or more of a polymer wax, an aliphatic multifunctional modifier and a polyol compound.
As a preferred embodiment, the toughening agent is one or more of MBS, copolymerized methyl methacrylate and butadiene-styrene; the titanium dioxide is one or more of titanium dioxide R248, TC30, 104 and 108.
In this embodiment, the mixing machine comprises a mixing tub 100, the mixing tub 100 having the mixing chamber 102 therein; the mixing barrel 100 is internally provided with an annular cavity 101 mixed with the mixing cavity 102 in circumferential arrangement, the inner side wall of the mixing barrel 100 is provided with a plurality of lateral air holes, and the annular cavity 101 is communicated with the mixing cavity 102 through the lateral air holes; a plurality of lateral apertures are circumferentially arranged at intervals along the circumference as well as axially of the mixing tub 100.
The annular cavity 101 is communicated with an inflating device through an air pipe, and the inflating device blows high-pressure air into the annular cavity 101 through the air pipe; a variable pressure pipe 200 is arranged at the central position of the mixing cavity 102, and a variable pressure cavity 201 is arranged in the variable pressure pipe 200; a plurality of air holes are formed in the pressure changing pipe 200, the pressure changing cavity 201 is communicated with the mixing cavity 102 through the air holes, and the pressure changing pipe 200 is communicated with air blowing and sucking equipment.
When the air blowing and sucking device blows air into the variable pressure cavity 201, and the variable pressure cavity 201 is in a high pressure state; when the pressure-variable cavity 201 is subjected to air suction operation by the air suction and blowing equipment, the air suction and blowing equipment sucks the gas in the pressure-variable cavity 201, and the pressure-variable cavity 201 is in a low-pressure state;
in the preparation step 1), after the flame retardant, the antioxidant, the dispersant, the toughening agent, the titanium dioxide and the pigment are placed in the mixing cavity 102, high-pressure gas is blown into the annular cavity 101 by the inflating equipment, enters the mixing cavity 102 through the lateral holes, and is blown to mix the flame retardant, the antioxidant, the dispersant, the toughening agent, the titanium dioxide and the pigment in a suspension state; in the process of mixing the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment in the mixing cavity 102, the air blowing and sucking equipment alternately performs air blowing operation and air sucking operation on the variable pressure cavity 201.
Under the action of high-pressure gas, the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are blown into a suspension state to be mixed in the mixing cavity 102, and meanwhile, the mixture can be further blown or adsorbed and moved towards the center of the mixing cavity 102 by utilizing the alternate blowing operation and the air suction operation of the variable-pressure pipe 200, so that the mixture is further uniformly mixed, and the phenomenon of nonuniform mixing caused by the unidirectional blowing and mixing of the mixture is avoided.
In this embodiment, the mixer has a mixing drum 300, and the mixing drum 300 has a mixing cavity 301 arranged longitudinally therein; the center of the stirring cavity 301 is provided with a central shaft 400 arranged longitudinally, the periphery of the central shaft 400 is provided with a plurality of stirring shafts 401, and the plurality of stirring shafts 401 are arranged around the central shaft 400 at intervals in the circumferential direction.
A plurality of rotating shafts 302 arranged longitudinally are arranged in the stirring cavity 301, and the plurality of rotating shafts 302 are arranged around the stirring cavity 301 in the circumferential direction; the periphery of the rotating shaft 302 is covered with an elastic layer, the outer side walls of the adjacent rotating shafts 302 are mutually abutted, and the outer side wall of each rotating shaft 302 is abutted against the inner side wall of the stirring cavity 301; an enclosing area 303 is formed by enclosing the outer side wall of the adjacent rotating shaft 302 and the inner side wall of the stirring cavity 301, the top of the enclosing area 303 is communicated with the stirring cavity 301, and the bottom of the enclosing area 303 is communicated with the stirring cavity 301.
In the preparation step 2), after the mixture and the carrier resin are placed in the stirring cavity 301, the central shaft 400 drives the plurality of stirring shafts 401 to rotate, the mixture and the carrier are stirred to form a stirred material, meanwhile, the plurality of rotating shafts 302 rotate, and the stirred material is extruded in the enclosed area 303 after being rolled into the enclosed area 303 by the rotating shafts 302, and returns to the stirring cavity 301 from the top and the bottom of the enclosed area 303; when the kneaded material passes through the space between the adjacent rotating shafts 302 and is wound into the enclosed region 303, the elastic layer on the outer periphery of the rotating shafts 302 is compressed by the compression and the kneaded material is reversely pressed.
The mixture mixes with carrier resin and forms the stirring material in stirring chamber 301, and the stirring material stirs under the drive of a plurality of (mixing) shafts 401, and can be extruded towards the inside wall of stirring chamber 301 by centrifugal force simultaneously, and at this moment, the stirring material receives the drive of axis of rotation 302, can be brought into and enclose and close regional 303, at the in-process of adjacent axis of rotation 302, receives the extrusion of elastic layer.
After entering the enclosed area 303, the stirring material is extruded to return to the stirring cavity 301 from the top and the bottom of the enclosed area 303, so that the stirring material is stirred and extruded in multiple positions and directions in the stirring cavity 301, and the stirring of the stirring material is more uniform.
In this embodiment, the periphery of the stirring shaft 401 is provided with a plurality of swinging pieces 500, the inner ends of the swinging pieces 500 are hinged on the stirring shaft 401, the outer end of the stirring shaft 401 extends outwards, and the plurality of swinging pieces 500 are arranged around the stirring shaft 401 at intervals in the circumferential direction; the adjacent swing pieces 500 have a stirring space 402 therebetween, a restricting spring 403 is provided in the stirring space 402, and both ends of the restricting spring 403 are connected to the adjacent swing pieces 500, respectively.
In the preparation step 2), when the central shaft 400 drives the stirring shafts 401 to rotate, the stirring shafts are extruded by the stirred materials, the swinging pieces 500 swing, the limiting springs 403 are stretched or compressed, and after the limiting springs 403 are stretched or compressed, the resetting effect is exerted on the swinging pieces 500 to drive the swinging pieces 500 to reset and swing.
When the central shaft 400 drives a plurality of stirring shafts 401 to rotate and stir, the stirring shafts 401 rotate and stir the stirring materials, and a plurality of swinging pieces 500 on the stirring shafts 401 can disorderly disturb the stirring materials in the rotating and stirring process, so that the stirring materials are prevented from forming directional rotation, and the stirring of the stirring materials can be more uniform.
In addition, in the process of stirring the stirring material, the stirring shaft 401 swings the swinging plates 500 in opposite directions or away from each other, so that the stirring material can be extruded and the like, and thus, stirring in multiple positions, multiple directions and multiple modes is realized, and stirring is more uniform.
In this embodiment, the swing plate 500 is provided with a plurality of hollow grooves 501, a plurality of curved channels 502 are respectively formed on two sides of the hollow grooves 501, inner ends of the curved channels 502 are communicated with the hollow grooves 501, and outer ends of the curved channels 502 penetrate through the side surface of the swing plate 500 to form a plurality of penetrating openings arranged at intervals.
In the preparation step 2), when the stirring material is stirred in the stirring cavity 301, the stirring material is dispersed into the hollow groove 501 through the plurality of through openings and the plurality of curved channels 502 and collected together with the rotation of the swinging plate 500, and then passes through the plurality of curved channels 502 and is placed in the stirring cavity 301 through the plurality of through openings.
Like this, stirring material is at the in-process of stirring, is broken up the back that gets into hollow chamber through a plurality of crooked passageways 502 and collects, and rethread a plurality of crooked passageways 502 are broken up and are returned to stirring chamber 301 in to can make the stirring of stirring material more even.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. The preparation method of the super-dispersed ceramic white master batch is characterized by comprising the following preparation steps:
1) According to the mass percentage, 96.8 to 99.35 percent of carrier resin, 0.04 to 0.25 percent of flame retardant, 0.01 to 0.15 percent of antioxidant, 0.1 to 0.3 percent of dispersant, 0.3 to 0.5 percent of flexibilizer, 1 to 3 percent of titanium pigment and 0 to 1 percent of pigment are provided; the flame retardant, the antioxidant, the dispersant, the flexibilizer, the titanium dioxide and the pigment are solid particles, and the carrier resin is fluid;
putting the flame retardant, the antioxidant, the dispersing agent, the flexibilizer, the titanium dioxide and the pigment into a mixer for uniform mixing to form a mixture; the mixing machine is provided with a mixing cavity, the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are pre-mixed outside the mixing cavity and then poured into the mixing cavity, and in the mixing cavity, the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are blown by high-pressure gas to be suspended for mixing;
2) Placing the mixture and the carrier resin in a stirrer and stirring uniformly to form a stirred material;
3) And placing the stirred material in a double-screw extruder for extrusion granulation to form the ultra-dispersed ceramic white master batch.
2. The method for preparing the ultra-dispersed porcelain white master batch according to claim 1, wherein the carrier resin is at least one of PC resin, ABS resin and PP resin; the PC resin has a melt index of 10MI to 50MI, and the ABS resin has a melt index of 7MI to 30 MI.
3. The method for preparing the ultra-dispersed porcelain white master batch according to claim 1, wherein the flame retardant is one or more of a silsesquioxane flame retardant, a phosphate flame retardant or potassium 3-benzenesulfonyl benzenesulfonate.
4. The method for preparing the ultra-dispersed porcelain white master batch according to claim 1, wherein the antioxidant is a hindered phenol antioxidant or an auxiliary antioxidant.
5. The method for preparing the ultra-dispersed porcelain white master batch according to claim 1, wherein the dispersing agent is one or more of polymer wax, aliphatic multifunctional modifier and polyol compound.
6. The method for preparing the ultra-dispersed porcelain white master batch according to claim 1, wherein the toughening agent is one or more of MBS, copolymerized methyl methacrylate and butadiene-styrene; the titanium dioxide is one or more of titanium dioxide R248, TC30, 104 and 108.
7. The method for preparing the ultra-disperse porcelain white master batch according to any one of claims 1 to 6, wherein the mixing machine comprises a mixing barrel having the mixing cavity therein; the mixing barrel is internally provided with an annular cavity which is mixed with the mixing cavity and is circumferentially arranged, the inner side wall of the mixing barrel is provided with a plurality of lateral air holes, and the annular cavity is communicated with the mixing cavity through the lateral air holes; a plurality of the lateral holes are circumferentially arranged along the circumferential direction and the axial direction of the mixing barrel at intervals;
the annular cavity is communicated with an inflating device through an air pipe, and the inflating device blows high-pressure air into the annular cavity through the air pipe; a variable pressure pipe is arranged at the central position of the mixing cavity, and a variable pressure cavity is arranged in the variable pressure pipe; the variable pressure pipe is internally provided with a plurality of air holes, the variable pressure cavity is communicated with the mixing cavity through the plurality of air holes, and the variable pressure pipe is communicated with the air blowing and sucking equipment;
when the air blowing and sucking equipment performs air blowing operation on the variable pressure cavity, the air blowing and sucking equipment blows air into the variable pressure cavity, and the variable pressure cavity is in a high-pressure state; when the air blowing and sucking equipment performs air sucking operation on the variable pressure cavity, the air blowing and sucking equipment sucks gas in the variable pressure cavity, and the variable pressure cavity is in a low-pressure state;
in the preparation step 1), after the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment are placed in a mixing cavity, blowing high-pressure gas into the annular cavity by the inflating equipment, wherein the high-pressure gas enters the mixing cavity through the lateral holes, and blows the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment to be mixed in a suspension state;
and in the process of mixing the flame retardant, the antioxidant, the dispersing agent, the toughening agent, the titanium dioxide and the pigment in the mixing cavity, the air blowing and sucking equipment alternately performs air blowing operation and air sucking operation on the variable pressure cavity.
8. The method for preparing the ultra-disperse white porcelain master batch according to any one of claims 1 to 6, wherein the stirring machine is provided with a stirring cylinder, and the stirring cylinder is internally provided with a stirring cavity which is longitudinally arranged; a central shaft which is longitudinally arranged is arranged in the center of the stirring cavity, a plurality of stirring shafts are arranged on the periphery of the central shaft, and the stirring shafts are circumferentially arranged along the circumferential direction of the central shaft at intervals;
a plurality of rotating shafts which are longitudinally arranged are arranged in the stirring cavity and are circumferentially arranged along the circumferential direction of the stirring cavity; the periphery of the rotating shafts is covered with an elastic layer, the outer side walls of adjacent rotating shafts are mutually abutted, and the outer side wall of each rotating shaft is abutted against the inner side wall of the stirring cavity; an enclosure area is enclosed between the outer side wall of the adjacent rotating shaft and the inner side wall of the stirring cavity, the top of the enclosure area is communicated with the stirring cavity, and the bottom of the enclosure area is communicated with the stirring cavity;
in the preparation step 2), after the mixture and the carrier resin are placed in the stirring cavity, the central shaft drives the stirring shafts to rotate, the mixture and the carrier are stirred to form a stirred material, meanwhile, the rotating shafts rotate, and the stirred material is extruded in the enclosed area after being rolled into the enclosed area by the rotating shafts and returns to the stirring cavity from the top and the bottom of the enclosed area;
when the stirring materials pass through the adjacent rotating shafts and are rolled into the enclosed area, the elastic layer on the periphery of the rotating shafts is compressed by extrusion, and the stirring materials are reversely extruded.
9. The preparation method of the ultra-dispersed ceramic white master batch according to claim 8, wherein a plurality of swinging pieces are arranged on the periphery of the stirring shaft, the inner ends of the swinging pieces are hinged on the stirring shaft, the outer end of the stirring shaft extends outwards, and the swinging pieces are circumferentially arranged along the circumferential direction of the stirring shaft at intervals; a stirring interval is arranged between the adjacent swinging pieces, a limiting spring is arranged in the stirring interval, and two ends of the limiting spring are respectively and correspondingly connected with the adjacent swinging pieces;
in the preparation step 2), when the central shaft drives the stirring shafts to rotate, the stirring shafts are extruded by the stirred materials, the swinging pieces swing and stretch the limiting springs or compress the limiting springs, and after the limiting springs are stretched or compressed, the limiting springs exert a reset effect on the swinging pieces to drive the swinging pieces to reset and swing.
10. The method for preparing the ultra-disperse white porcelain master batch according to claim 9, wherein a plurality of hollow grooves are formed in the swinging piece, a plurality of curved channels are respectively formed on two sides of each hollow groove, inner ends of the curved channels are communicated with the hollow grooves, and outer ends of the curved channels penetrate through the side surface of the swinging piece to form a plurality of penetrating openings which are arranged at intervals;
in the preparation step 2), when the stirring material is stirred in the stirring cavity, the stirring material is dispersed into the hollow groove through the plurality of through openings and the plurality of curved channels and collected together with the rotation of the swinging piece, then passes through the plurality of curved channels, and is placed in the stirring cavity through the plurality of through openings.
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Application publication date: 20230411 |