CN112898603B - Modified plastic particle with outer protective layer and preparation process thereof - Google Patents
Modified plastic particle with outer protective layer and preparation process thereof Download PDFInfo
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- CN112898603B CN112898603B CN202110288692.4A CN202110288692A CN112898603B CN 112898603 B CN112898603 B CN 112898603B CN 202110288692 A CN202110288692 A CN 202110288692A CN 112898603 B CN112898603 B CN 112898603B
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- 239000002245 particle Substances 0.000 title claims abstract description 100
- 239000011241 protective layer Substances 0.000 title claims abstract description 95
- 239000004033 plastic Substances 0.000 title claims abstract description 61
- 229920003023 plastic Polymers 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 102
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 238000002844 melting Methods 0.000 claims abstract description 20
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- 239000008187 granular material Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 113
- 238000004519 manufacturing process Methods 0.000 claims description 32
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- 230000008569 process Effects 0.000 claims description 10
- 210000004177 elastic tissue Anatomy 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims 2
- 238000000926 separation method Methods 0.000 abstract description 15
- 230000008595 infiltration Effects 0.000 abstract description 5
- 238000001764 infiltration Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
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- 239000000047 product Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
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- 239000000428 dust Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
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- 238000006460 hydrolysis reaction Methods 0.000 description 1
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- 239000013067 intermediate product Substances 0.000 description 1
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- 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
- C08J3/12—Powdering or granulating
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The invention discloses a modified plastic particle with an outer protective layer and a preparation process thereof, belonging to the field of plastic particles, wherein an attachment net is arranged between a blank particle main body and the outer protective layer to realize the separation of the blank particle main body and the outer protective layer, so that the blank particle main body is not directly contacted with the outer protective layer, on the other hand, the connection strength of the attachment net and the outer protective layer is increased through a capillary fiber cluster on the attachment net, the phenomenon of falling-off of the outer protective layer is not easy to occur, the combined three bodies are separated by utilizing the difference of the melting temperatures of the blank particle main body, the outer protective layer and the attachment net, the influence of external environmental factors on the blank particle main body can be reduced by coating the outer protective layer outside the blank particle main body, meanwhile, the infiltration phenomenon cannot occur between the blank particle main body and the outer protective layer, and the separation between the blank particle main body and the outer protective layer is not easy to affect, the subsequent use of the embryo granule main body is not easily influenced.
Description
Technical Field
The invention relates to the field of plastic particles, in particular to a modified plastic particle with an outer protective layer and a preparation process thereof.
Background
The modified plastic is a plastic product which is processed and modified by methods such as filling, blending, reinforcing and the like on the basis of general plastics and engineering plastics, and improves the performance in the aspects of flame retardance, strength, impact resistance, toughness and the like.
The modified plastic belongs to an intermediate product in a petrochemical industry chain, is mainly processed by taking five general plastics and five engineering plastics as plastic matrixes, and has the characteristics of flame retardance, impact resistance, high toughness, easy processability and the like. The modified plastic is a typical industry benefiting the technical progress and the consumption upgrade, benefits from the accelerated transfer of the capacity of global household appliances, computers, electric tools, toys and the like to China, and has become a large manufacturing industry country in the fields by virtue of the cost advantages in the aspects of labor force and other production factors, thereby promoting the development of the domestic modified plastic industry. The consumption upgrade enables industries such as automobiles, buildings and the like in China to enter a high-speed growth period, and with the continuous improvement of the requirements of people on the performance of materials, China is becoming the biggest potential market and the main demand growth power of global modified plastics.
Part of plastic particles are unstable in chemical and physical properties in air and are easy to deteriorate in natural environment, for example, nylon materials are easy to be affected with damp. In the atmosphere, the equilibrium water absorption of the nylon particles is 3.5%, and the water content of the nylon has a great influence on the mechanical properties of the nylon particles. The presence of water in the molten state causes hydrolysis of nylon, resulting in a decrease in molecular weight, which leads to a decrease in mechanical properties of the product, and also causes defects such as bubbles, silver filaments, and streaks on the surface of the product during molding. Therefore, the plastic particles must be dried sufficiently before molding, so that the plastic particles must be stored and transported for a long time to coat a protective layer on the surfaces of the plastic particles, however, as the contact time between the protective layer and the plastic particles increases, a wetting phenomenon occurs on the contact surfaces of the coating layers and the plastic particles, so that the coating layer material and the plastic particles are difficult to completely separate, and the application of the subsequent plastic particles is affected.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a modified plastic particle with an outer protection layer and a preparation process thereof, which can reduce the influence of external environmental factors on a blank particle main body by coating the outer protection layer outside the blank particle main body, so that the blank particle main body is not easy to deteriorate, meanwhile, the blank particle main body and the outer protection layer are not infiltrated, the separation between the blank particle main body and the outer protection layer is not easy to influence, and the subsequent use of the blank particle main body is not easy to influence.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A modified plastic particle with an external protective layer and a preparation process thereof, wherein the modified plastic particle comprises a blank particle main body, an outer protective layer is coated outside the embryo particle main body, an attachment net is arranged between the embryo particle main body and the outer protective layer, the attachment net is respectively and fixedly connected with the embryo particle main body and the outer protective layer, the attachment net has a contraction trend, the attachment net comprises a net main body, barbs are fixedly arranged on one end of the net main body close to the embryo grain main body, one end of the barb far away from the net main body pierces the surface of the embryo particle main body, one end of the net main body close to the outer protective layer is fixedly connected with a capillary fiber cluster, the capillary fiber cluster comprises a plurality of elastic fibers, one ends of the elastic fibers far away from the net main body are in a three-dimensional spiral shape, and one ends of the adjacent elastic fibers far away from the net main body are intertwined together to form a plurality of communicated compartments;
the preparation process mainly comprises the following steps:
s1, manufacturing an ice mold, namely manufacturing an inner ice shell, covering a plastic heat conducting strip matched with the inner ice shell on the inner wall of the inner ice shell, sleeving an attaching net on the outer side of the inner ice shell, wherein the attaching net is in a stretching state, then condensing the outer side of the attaching net to manufacture an outer ice shell, forming an ice mold main body by the inner ice shell and the outer ice shell which are fixedly connected with each other, then chiseling material injection holes on the attaching net, and sequentially penetrating through the outer ice shell, the attaching net and the inner ice shell through the material injection holes to communicate the inner cavity of the inner ice shell with the outside to manufacture the ice mold;
s2, forming embryo grains, namely injecting molten embryo grain melt into the ice film prepared in the step S1 through the material injection hole, on one hand, the molten embryo grain melt can form the same shape as the inner cavity of the ice mold main body in the ice mold main body under the action of the plastic heat conducting sheet, on the other hand, the molten embryo grain melt can conduct heat to the ice mold main body rapidly, so that the ice mold main body is melted, meanwhile, the embryo grain melt is gradually solidified to form an embryo grain main body matched with the inner cavity of the ice mold main body, the attachment net loses constraint and shrinks inwards in the process until barbs on the attachment net pierce the upper surfaces of the plastic heat conducting sheet and the embryo grain main body, meanwhile, due to the self shrinkage relationship of the attachment net, originally existing gaps can be automatically sealed, and due to the fact that the plastic heat conducting sheet is pierced by a plurality of barbs, the structure of the plastic heat conducting sheet completely collapses, and after the ice mold main body is melted, a large amount of liquid water is adsorbed, so that the weight of the embryo grain melt is greatly increased and is completely stripped from the surface of the embryo grain main body, meanwhile, the influence of molten distilled water on the forming of the blank main body is reduced, then the blank main body is kept stand at room temperature to be completely hardened and formed, and then fixed ends are fixedly connected to the surfaces of the blank main body and the attachment net to obtain a blank piece;
s3, coating a protective layer, coating an outer protective layer on the surface of the attachment net by using a protective layer coating device, wherein the blank main body is not in direct contact with the outer protective layer due to the separation effect of the capillary fiber cluster, so that the infiltration phenomenon is not easy to occur, and the outer protective layer is not easy to peel off from the surfaces of the blank main body and the attachment net due to the solidification effect of the capillary fiber cluster, wherein the melting temperature of the outer protective layer is far lower than the melting temperature of the blank main body, and the melting temperature of the blank main body is lower than that of each structure of the attachment net, so when the plastic granules are required to be used, the outer protective layer on the surface can be firstly removed by using the difference of the melting temperatures among the blank main body, the outer protective layer and the attachment net, then the blank main body is melted at the melting temperature of the blank main body, and then the attachment net in the melted blank main body slurry can be removed by a filtering way, then, the molding work is carried out by using the embryo granule main body.
Furthermore, in the S1 process of making the ice mold, the inner ice shell and the outer ice shell are made of distilled water, so that impurities are not easily doped into the ice mold main body, and the subsequent molding effect of the embryo particle main body is not easily affected.
Further, in the S1 process of manufacturing the ice mold, the inner ice shell and the outer ice shell are vacuumized with distilled water before being manufactured, so that bubbles are not easily formed in the inner ice shell and the outer ice shell, and the overall strength of the ice mold main body is not easily affected.
Furthermore, in the S1 and ice mold manufacturing process, the density of the capillary fiber clusters is close to that of distilled water, the capillary fiber clusters can be suspended in the distilled water, relatively disordered distribution of the capillary fiber clusters can be maintained in the outer ice shell manufacturing process, the three-dimensional space structure of the capillary fiber clusters is easy to maintain, and the multi-gap three-dimensional space structure of the capillary fiber clusters is not easily polluted by impurities such as dust in the nature in the ice mold storage stage.
Further, in the S1 process of making the ice mold, the plastic heat conducting sheet is made of a hydrophilic material that is not easily bonded by the embryo particle solution of the embryo particle main body, so that the embryo particle main body and the plastic heat conducting sheet can be conveniently separated from each other.
Further, protective layer coating device includes conveyer and annular fixed frame in S3, the coating protective layer, the last fixed base station of fixedly connected with of conveyer, the chisel has with stiff end assorted constant head tank on the fixed base station, blank inserts and establishes in the constant head tank, a plurality of atomizer of fixedly connected with in the annular fixed frame, it is a plurality of atomizer evenly distributed is at conveyer' S upside, and at the in-process of protective layer coating device normal work, conveyer drives fixed base station and blank motion, and when fixed base station and blank moved the downside of annular fixed frame, the vaporific outer protective layer thick liquids of department of spraying by a plurality of atomizer can the adhesion be on the surface that adheres to the net and solidify into the outer protective layer, accomplishes the coating work of outer protective layer.
Furthermore, the protective layer coating device works in a closed environment, and the pollution of atomized outer protective layer slurry to the working environment is reduced.
Further, be connected with the adhesive block between stiff end and the embryo grain main part, bury energy supply device underground in the stiff end, energy supply device fixedly connected with owner connecting rod, the one end that energy supply device was kept away from to the owner connecting rod runs through the stiff end and extends to in the adhesive block with hot electric grid fixed connection, and after the outer protective layer coating was accomplished, hot electric grid can the automatic work generate heat, melts the adhesive block, loses the connecting piece between embryo grain main part and the stiff end, stiff end and embryo grain main part autosegregation, the terminal surface that the stiff end is close to embryo grain main part one end is the non-level face, melts the back at the adhesive block, can realize the separation that drops fast between stiff end and the hot electric grid.
Furthermore, the adhesive block is made of the same material as the outer protective layer, and the joint of the attachment net and the fixed end cannot be coated due to the shielding of the fixed end in the process of coating the protective layer at S3, so that the adhesive block in a molten state can be used for recording the supplement of the coating operation.
Further, the thermoelectric grid includes the electric heat ring, a plurality of branch connecting rods of fixedly connected with between electric heat ring and the main connecting rod, it is a plurality of branch connecting rod evenly distributed for the bonding glue piece melts more evenly, is difficult for taking away excessive bonding glue piece that does not melt at the in-process of embryo grain main part and stiff end separation by the stiff end, is difficult for influencing the benefit of coating work.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
in the scheme, the attachment net is arranged between the embryo particle main body and the outer protective layer to realize the separation of the embryo particle main body and the outer protective layer, so that the embryo particle main body is not directly contacted with the outer protective layer, on the other hand, the connection strength of the attachment net and the outer protective layer is increased through the capillary fiber clusters on the attachment net, the phenomenon that the outer protective layer falls off is not easy to occur, and the difference of the melting temperatures of the embryo particle main body, the outer protective layer and the attachment net is utilized, the combined embryo particle main body, the outer protective layer and the attachment net are separated, the subsequent use of the embryo particle main body is not easily influenced, can reduce the influence of external environmental factors on the embryo particle main body by coating the outer protective layer outside the embryo particle main body, so that the embryo particle main body is not easy to deteriorate, meanwhile, the infiltration phenomenon cannot occur between the embryo particle main body and the outer protection layer, the separation between the embryo particle main body and the outer protection layer is not easily influenced, and the subsequent use of the embryo particle main body is not easily influenced.
Drawings
FIG. 1 is a schematic view of a partial cross-sectional structure of a plastic particle according to the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of the joint between the plastic particle embryo and the outer protective layer according to the present invention;
FIG. 3 is a main flow chart of the plastic particle preparation process of the present invention;
FIG. 4 is a front cross-sectional view of the ice mold body of the present invention;
FIG. 5 is a schematic sectional view of the front side of the embryo particles of the present invention attached to the fixed end before the outer coating layer is coated;
FIG. 6 is a schematic structural view of a thermoelectric grid according to the present invention;
FIG. 7 is a partial schematic view of the outer cladding application apparatus of the present invention.
The reference numbers in the figures illustrate:
1 embryo grain main part, 2 outer protective layer, 3 attach to net, 301 net main part, 302 barb, 303 capillary fibre bunch, 4 ice mould main parts, 5 notes material holes, 6 stiff ends, 7 energy supply device, 8 bonding glue pieces, 9 main connecting rods, 10 thermoelectric bars, 1001 electric heat ring, 1002 branch connecting rods, 11 fixed base station, 12 conveyer, 13 annular fixed frames, 14 atomizer, 15 moulding conducting strip.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a modified plastic particle with an outer protective layer and a process for preparing the same, the modified plastic particles comprise an embryo particle main body 1, an outer protection layer 2 wraps the outer side of the embryo particle main body 1, an attachment net 3 is arranged between the embryo particle main body 1 and the outer protection layer 2, the attachment net 3 is respectively and fixedly connected with the embryo particle main body 1 and the outer protection layer 2, the attachment net 3 has a contraction trend, the attachment net 3 comprises a net main body 301, one end, close to the embryo particle main body 1, of the net main body 301 is fixedly connected with an agnail 302, one end, far from the net main body 301, of the agnail 302 penetrates into the surface of the embryo particle main body 1, one end, close to the outer protection layer 2, of the net main body 301 is fixedly connected with a capillary fiber cluster 303, the capillary fiber cluster 303 comprises a plurality of elastic fibers, one ends, far from the net main body 301, of the plurality of elastic fibers are in a three-dimensional spiral shape, and one ends, far from the net main body 301, of the adjacent elastic fibers are intertwined to form a plurality of mutually communicated compartments;
please refer to fig. 3, the process of the preparation process mainly includes:
s1, manufacturing an ice mold, manufacturing an inner ice shell, covering a plastic heat conducting strip 15 matched with the inner ice shell on the inner wall of the inner ice shell, sleeving an attachment net 3 on the outer side of the inner ice shell, setting the attachment net 3 in a stretching state, then, setting the outer ice shell on the outer side of the attachment net 3, forming an ice mold main body 4 by the inner ice shell and the outer ice shell which are fixedly connected with each other, then, chiseling injection holes 5 on the attachment net 3, sequentially penetrating the outer ice shell, the attachment net 3 and the inner ice shell through the injection holes 5, communicating the inner ice shell cavity with the outside, manufacturing the ice mold shown in figure 4, particularly, manufacturing the inner ice shell and the outer ice shell by using distilled water, not easily doping impurities into the ice mold main body 4, not easily influencing the subsequent molding effect of the embryo particle main body 1, vacuumizing the inner ice shell and the outer ice shell before manufacturing, and not easily forming air bubbles in the inner ice shell and the outer ice shell, the overall strength of the ice mold main body 4 is not easily influenced, the density of the capillary fiber clusters 303 is close to that of distilled water, the capillary fiber clusters 303 can be suspended in the distilled water, in the process of manufacturing an outer ice shell, the capillary fiber clusters 303 can be kept in relatively disordered distribution, the three-dimensional space structure of the capillary fiber clusters 303 is easily kept, the multi-gap three-dimensional space structure of the capillary fiber clusters 303 is not easily polluted by impurities such as dust in the nature in the storage stage of the ice mold, and the plastic heat conducting sheet 15 is made of a material which is difficult to bond the embryo particle solution of the embryo particle main body 1 and is hydrophilic, so that the later embryo particle main body 1 is conveniently separated from the plastic heat conducting sheet 15;
s2, forming embryo grains, namely injecting molten embryo grain melt into the ice film prepared in the step S1 through the material injection holes 5, wherein on one hand, the molten embryo grain melt can form the same shape as the inner cavity of the ice mold main body 4 in the ice mold main body 4 under the action of the plastic heat conducting sheet 15, on the other hand, the molten embryo grain melt can conduct heat to the ice mold main body 4 rapidly, so that the ice mold main body 4 is melted, meanwhile, the embryo grain melt is gradually solidified to form the embryo grain main body 1 matched with the inner cavity of the ice mold main body 4, and the attachment net 3 loses constraint and contracts inwards in the process until the barbs 302 on the attachment net 3 pierce the upper surfaces of the plastic heat conducting sheet 15 and the embryo grain main body 1, meanwhile, due to the self contraction relationship of the attachment net 3, the originally existing gaps can be automatically sealed, and the plastic heat conducting sheet 15 is pierced by the barbs 302, so that the structure of the self collapses completely, the method is characterized in that after the ice mold body 4 is melted, a large amount of liquid water is adsorbed to greatly increase the self weight and completely peel off the surface of the embryo particle body 1, the influence of the melted distilled water on the molding of the embryo particle body 1 is reduced, then the blank particle body 1 is kept standing at room temperature to be completely hardened and molded, particularly, the specific current situation of the embryo particle body 1 can be determined by the shape of the inner cavity of the ice mold body 4 and can be reasonably designed by a person skilled in the art, in addition, the standing hardening and molding of the embryo particle body 1 need to be carried out in a dust-free environment, and then the fixed end 6 is fixedly connected to the surfaces of the embryo particle body 1 and the attachment net 3, so that a blank shown in fig. 5 is prepared;
s3, coating a protective layer, coating the outer protective layer 2 on the surface of the attachment net 3 by using a protective layer coating device, wherein the blank main body 1 is not in direct contact with the outer protective layer 2 due to the separation effect of the capillary fiber cluster 303, so that the infiltration phenomenon is not easy to occur, and the outer protective layer 2 is not easy to peel off from the surfaces of the blank main body 1 and the attachment net 3 due to the solidification effect of the capillary fiber cluster 303, wherein the melting temperature of the outer protective layer 2 is far lower than the melting temperature of the blank main body 1, and the melting temperature of the blank main body 1 is lower than that of each structure of the attachment net 3, so when the plastic particles are required to be used, the separation can be performed by using the difference of the melting temperatures among the blank main body 1, the outer protective layer 2 and the attachment net 3, firstly, the outer protective layer 2 on the surface is removed at the melting temperature of the outer protective layer 2, and then the blank main body 1 is melted at the melting temperature of the blank main body 1, the adhering web 3 in the slurry of the molten body 1 of embryo particles can then be removed by filtration, after which the body 1 of embryo particles is used for forming.
Referring to fig. 6 and 7, S3, the device for coating a protective layer on a protective layer includes a conveyor belt 12 and an annular fixing frame 13, wherein the conveyor belt 12 is fixedly connected to the annular fixing frame 13 through a frame, which is a known technique of those skilled in the art and is not disclosed in detail in this application, a fixing base 11 is fixedly connected to the conveyor belt 12, a positioning groove matched with the fixing end 6 is cut on the fixing base 11, a blank is inserted into the positioning groove, a plurality of atomizing nozzles 14 are fixedly connected to the annular fixing frame 13, the plurality of atomizing nozzles 14 are uniformly distributed on the upper side of the conveyor belt 12, the conveyor belt 12 drives the fixing base 11 and the blank to move in the direction shown in fig. 7 during the normal operation of the protective layer coating device, when the fixing base 11 and the blank move to the lower side of the annular fixing frame 13, the atomized slurry of the outer protective layer 2 sprayed by the plurality of atomizing nozzles 14 can adhere to the surface of the attachment net 3 and be solidified into the outer protective layer 2, thereby completing the coating work of the outer protective layer 2, in particular, the protective layer coating device works in a closed environment, thereby reducing the pollution of the atomized slurry of the outer protective layer 2 to the working environment, a bonding rubber block 8 is connected between the fixed end 6 and the embryo particle main body 1, an energy supply device 7 is embedded in the fixed end 6, the energy supply device 7 is fixedly connected with a main connecting rod 9, one end of the main connecting rod 9 far away from the energy supply device 7 penetrates through the fixed end 6 and extends into the bonding rubber block 8 to be fixedly connected with a thermoelectric grid 10, after the outer protective layer 2 is coated, the thermoelectric grid 10 can automatically work and generate heat, the bonding rubber block 8 is melted, the connecting piece between the embryo particle main body 1 and the fixed end 6 is lost, the fixed end 6 is automatically separated from the embryo particle main body 1, in particular, the normal work of the energy supply device 7 and the thermoelectric grid 10 needs to be controlled by the control terminal, the control terminal can be preset in the fixed end 6 and corresponding instructions are input in advance to realize the timing separation between the fixed end 6 and the embryo particle main body 1, which is a known technology of those skilled in the art and is not disclosed in detail in the present application, those skilled in the art can realize the above work according to the prior art, the end surface of the fixed end 6 close to one end of the embryo particle main body 1 is a non-flat surface, after the adhesive block 8 melts, the fixed end 6 and the thermoelectric grid 10 can realize the quick falling separation, the adhesive block 8 is the same material as the outer protective layer 2, the coating work can not be carried out at the joint of the attachment net 3 and the fixed end 6 because of the shielding of the fixed end 6 in the process of coating the protective layer at S3, and the adhesive block 8 in the molten state can remember the supplement of the coating work, thermoelectric grid 10 includes ring heater 1001, a plurality of branch connecting rods 1002 of fixedly connected with between ring heater 1001 and the main connecting rod 9, a plurality of branch connecting rods 1002 evenly distributed for the more even that piece 8 melts is glued in the bonding, is difficult for taking away excessive not-melted bonding glue piece 8 by stiff end 6 at the in-process of embryo grain main part 1 and the separation of stiff end 6, is difficult for influencing the benefit of coating work and lacks.
In the scheme, the attachment net 3 is arranged between the embryo main body 1 and the outer protection layer 2 to realize the separation of the embryo main body 1 and the outer protection layer 2, so that the embryo main body 1 is not directly contacted with the outer protection layer 2, on the other hand, the connection strength of the attachment net 3 and the outer protection layer 2 is increased through the capillary fiber clusters 303 on the attachment net 3, the phenomenon that the outer protection layer 2 falls off is not easy to occur, the combined embryo main body 1, the outer protection layer 2 and the attachment net 3 are separated by utilizing the difference of the melting temperatures of the embryo main body 1, the outer protection layer 2 and the attachment net 3, the subsequent use of the embryo main body 1 is not easy to be influenced, the influence of external environmental factors on the embryo main body 1 can be reduced by coating the outer protection layer 2 outside the embryo main body 1, so that the embryo main body 1 is not easy to deteriorate, meanwhile, the infiltration phenomenon cannot occur between the embryo main body 1 and the outer protection layer 2, and the separation between the embryo main body 1 and the outer protection layer 2 is not easy to be influenced, the subsequent use of the embryo granule main body 1 is not easily affected.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. A preparation process of modified plastic particles with an outer protective layer is characterized in that: its modified plastic particle includes embryo grain main part (1), the cladding in embryo grain main part (1) outside has outer protective layer (2), be equipped with between embryo grain main part (1) and outer protective layer (2) and adhere to net (3), it respectively with embryo grain main part (1) and outer protective layer (2) fixed connection to adhere to net (3), it has contraction trend to adhere to net (3), it includes net main part (301) to adhere to net (3), one end fixed connection that net main part (301) are close to embryo grain main part (1) has barb (302), the surface of embryo grain main part (1) is pierced to the one end that barb (302) are far away from net main part (301), net main part (301) are close to the one end fixedly connected with capillary fibre cluster (303) of outer protective layer (2), capillary fibre cluster (303) include a plurality of elastic fiber, and is a plurality of the one end that elastic fiber is far away from net main part (301) all is three-dimensional heliciform, the ends of the adjacent elastic fibers far away from the net main body (301) are intertwined together to form a plurality of interconnected compartments;
the preparation process mainly comprises the following steps:
s1, manufacturing an ice mold, namely manufacturing an inner ice shell, covering a plastic heat conducting strip (15) matched with the inner ice shell on the inner wall of the inner ice shell, sleeving an attachment net (3) on the outer side of the inner ice shell, wherein the attachment net (3) is in a stretching state, then condensing the outer side of the attachment net (3) to manufacture an outer ice shell, forming an ice mold main body (4) by the inner ice shell and the outer ice shell which are fixedly connected with each other, then chiseling injection holes (5) on the attachment net (3), and sequentially penetrating through the outer ice shell, the attachment net (3) and the inner ice shell through the injection holes (5) to communicate the inner cavity of the inner ice shell with the outside to manufacture the ice mold;
s2, blank grain forming, wherein a blank grain melt body in a molten state is injected into the ice film prepared in the step S1 through a material injection hole (5), the blank grain melt body in the molten state can conduct heat to the ice mold main body (4) rapidly, so that the ice mold main body (4) is melted, meanwhile, the blank grain melt body is gradually solidified to form a blank grain main body (1) matched with the inner cavity of the ice mold main body (4), the attachment net (3) loses constraint and contracts inwards in the process until barbs (302) on the attachment net (3) pierce through the plastic heat conducting sheet (15) and the upper surface of the blank grain main body (1), meanwhile, due to the self contraction relationship of the attachment net (3), originally existing gaps can be automatically sealed, and due to the fact that the plastic heat conducting sheet (15) is pierced through a plurality of barbs (302), after the ice mold main body (4) is melted, a large amount of liquid water is adsorbed, so that the self weight is greatly increased and the blank grain main body (1) is completely stripped from the surface, then standing at room temperature to completely harden and form the embryo particle main body (1), and then fixedly connecting a fixed end (6) on the surfaces of the embryo particle main body (1) and the attachment net (3) to prepare a blank piece;
s3, coating a protective layer, coating an outer protective layer (2) on the surface of the attaching net (3) by using a protective layer coating device, wherein the melting temperature of the outer protective layer (2) is far lower than the melting temperature of the embryo particle main body (1), the temperature for melting the embryo particle main body (1) is lower than that for melting each structure of the adhering net (3), so when the plastic particles are needed to be used, the outer protective layer (2) on the surface is removed at the melting temperature of the outer protective layer (2), then the embryo grain main body (1) is melted at the melting temperature of the embryo grain main body (1), then the attachment net (3) in the melted embryo grain main body (1) slurry can be removed in a filtering mode, and then the embryo grain main body (1) is utilized for forming.
2. The process for preparing modified plastic particles with an external protective layer according to claim 1, wherein: and in the S1 and ice mold manufacturing process, the inner ice shell and the outer ice shell are both made of distilled water.
3. The process for preparing modified plastic particles with an external protective layer as claimed in claim 2, wherein: and in the S1 and ice mold manufacturing process, before the inner ice shell and the outer ice shell are manufactured, the inner ice shell and the outer ice shell are vacuumized.
4. The process for preparing modified plastic particles with an external protective layer as claimed in claim 2, wherein: in the S1 and ice molding, the density of the capillary fiber cluster (303) is close to that of distilled water, and the capillary fiber cluster (303) can be suspended in the distilled water.
5. The process for preparing modified plastic particles with an external protective layer according to claim 1, wherein: and S1, in the ice mold manufacturing process, the plastic heat conducting sheet (15) is made of a hydrophilic material which is not easy to adhere embryo granules of the embryo granule main body (1) in a dissolved mode.
6. The process for preparing modified plastic particles with an external protective layer according to claim 1, wherein: s3, coating protective layer coating device includes conveyer (12) and annular fixed frame (13) in the coating protective layer, conveyer (12) are gone up the fixed base station of fixedly connected with (11), cut on fixed base station (11) and have with stiff end (6) assorted constant head tank, blank inserts and establishes in the constant head tank, a plurality of atomizer (14) of fixedly connected with are gone up in annular fixed frame (13), and are a plurality of atomizer (14) evenly distributed is at the upside of conveyer (12).
7. The process for preparing modified plastic particles with an external protective layer as claimed in claim 6, wherein: the protective layer coating apparatus operates in a closed environment.
8. The process for preparing modified plastic particles with an external protective layer according to claim 1, wherein: be connected with bonding glue piece (8) between stiff end (6) and embryo grain main part (1), energy supply device (7) have been buried underground in stiff end (6), energy supply device (7) fixedly connected with owner connecting rod (9), the one end that energy supply device (7) were kept away from in owner connecting rod (9) runs through stiff end (6) and extends to bonding glue piece (8) in with thermoelectric grid (10) fixed connection, outer protective layer (2) coating completion back, thermoelectric grid (10) can the automatic work generate heat, melt bonding glue piece (8), lose the connecting piece between embryo grain main part (1) and stiff end (6), stiff end (6) and embryo grain main part (1) autosegregation, the terminal surface that stiff end (6) are close to embryo grain main part (1) one end is the non-leveling face, melts the back in bonding glue piece (8).
9. The process for preparing modified plastic particles with an external protective layer as claimed in claim 8, wherein: the adhesive block (8) is made of the same material as the outer protective layer (2).
10. The process for preparing modified plastic particles with an external protective layer as claimed in claim 8, wherein: the thermoelectric grid (10) comprises an electric heating ring (1001), a plurality of branch connecting rods (1002) are fixedly connected between the electric heating ring (1001) and the main connecting rod (9), and the branch connecting rods (1002) are uniformly distributed.
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