CN114083851A - Semitransparent sheet and processing technology thereof - Google Patents
Semitransparent sheet and processing technology thereof Download PDFInfo
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- CN114083851A CN114083851A CN202111612188.1A CN202111612188A CN114083851A CN 114083851 A CN114083851 A CN 114083851A CN 202111612188 A CN202111612188 A CN 202111612188A CN 114083851 A CN114083851 A CN 114083851A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 44
- 239000004793 Polystyrene Substances 0.000 claims abstract description 35
- 229920002223 polystyrene Polymers 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 16
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 238000004806 packaging method and process Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 12
- 239000002071 nanotube Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229920005669 high impact polystyrene Polymers 0.000 claims description 3
- 239000004797 high-impact polystyrene Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 7
- 238000003860 storage Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/043—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/414—Translucent
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Wrappers (AREA)
Abstract
The invention relates to a semitransparent sheet, which is in a brown semitransparent shape and comprises an edge layer and a middle layer which are sequentially arranged from outside to inside, wherein the edge layer is a mixed layer formed by mixing carbon nano tubes and a strong dispersing agent, the middle layer is a mixed layer formed by mixing polystyrene and transparent rubber, and a carbon nano tube melting agent is mixed in the middle layer; the invention also relates to a processing technology of the sheet, which comprises the following steps: s1, preliminary processing of the intermediate layer raw material; s2, drying; s3, preparing a middle layer raw material; s4, preparing edge layer raw materials; s5, adding the raw material of the middle layer into a barrel of an extruder; s, adding the raw materials of the side layer into an auxiliary charging basket of an extruder; s7, extrusion molding; s8, cooling and shaping; s9, rolling; and S10, packaging. The invention has the advantages of reducing dust fall and improving safety.
Description
Technical Field
The invention relates to the technical field of electronic component packaging sheets, in particular to a semitransparent sheet and a processing technology thereof.
Background
Generally, electronic components are easily damaged by static electricity, and for this reason, a packaging sheet having conductivity or antistatic property which does not generate static electricity or can effectively dissipate static electricity even if generated is used for storage and transportation before the electronic components are incorporated into products. Further, such a packaging sheet having conductivity or antistatic property has an effect of preventing fine dust causing malfunction of an electronic component from approaching the electronic component in addition to preventing electrostatic damage, not only for protecting the electronic component from electrostatic damage, but also for preventing electrostatic damage, and has become an essential part of the electronic component which has been advanced toward miniaturization.
Conventional packaging sheets are generally divided into two categories: transparent sheets, which are commonly used for passive components such as connectors, inductors, capacitors, etc., and black conductive sheets, which are used for packaging active components such as semiconductors, ICs, diodes, etc.
The conventional black conductive sheet generally comprises an internal mixed layer and an external conductive master batch, wherein the mixed layer is prepared by mixing polystyrene and rubber, the conductive master batches on two sides are generally produced by taking carbon black as a raw material, carbon powder is easy to float in the transportation process, so that the dust falling phenomenon is caused, once the scattered carbon powder is attached to a pair of elements in a package, static electricity is generated, the element breakdown phenomenon is caused, the element is failed and damaged, and the use and processing of the element are influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a semitransparent sheet and a processing technology thereof, which have the advantages of reducing dust fall and improving safety.
In a first aspect, the invention discloses a translucent sheet, which adopts the following technical scheme:
a translucent sheet characterized by: the sheet is brown and semitransparent and comprises an edge layer and a middle layer which are sequentially arranged from outside to inside, wherein the edge layer is a mixed layer formed by mixing carbon nano tubes and a strong dispersing agent, the middle layer is a mixed layer formed by mixing polystyrene and transparent rubber, and a carbon nano tube melting agent is mixed in the middle layer.
By adopting the technical scheme, the carbon nano tube is used as a substitute, so that the dust falling phenomenon caused by carbon powder is reduced, and the safety of elements in the sheet in the transportation process is improved.
The invention is further configured to: the polystyrene includes transparent polystyrene (GPPS) and polystyrene (HIPS).
The invention is further configured to: the intermediate layer is colorless and transparent.
In a second aspect, the invention discloses a sheet processing technology, which adopts the following technical scheme:
a processing technology of a sheet is applied to the processing production of the translucent sheet, and comprises the following steps:
s1, preliminary processing of the intermediate layer raw material; adding transparent polystyrene, polystyrene and transparent rubber into a mixer, mixing and stirring until the transparent polystyrene, the polystyrene and the transparent rubber are fully and uniformly mixed to obtain a mixed raw material, wherein the ratio of the transparent polystyrene to the transparent rubber is 3: 2: 5, the internal temperature of the mixer is set to be 60 ℃, and the stirring time is not less than one hour;
s2, drying; putting the mixed raw materials of transparent polystyrene, polystyrene and transparent rubber which are uniformly stirred and mixed into a dehumidifying dryer for drying for not less than two hours;
s3, preparing a middle layer raw material; adding the mixed raw material dried in the step S2 into a temperature-controlled high-speed stirrer, adding a nanotube compatilizer into the temperature-controlled high-speed stirrer, and mixing and stirring until the mixture is uniformly stirred to obtain a middle layer raw material, wherein the addition amount of the nanotube compatilizer is 1% of the mixed material, and the internal temperature of the temperature-controlled high-speed stirrer is set to be 60 ℃;
s4, preparing edge layer raw materials; putting the carbon nano tube and the strong dispersing agent into a temperature-controlled mixer together, mixing and stirring for 30-40 minutes until the mixture is uniformly stirred to obtain a side layer raw material, wherein the mixing ratio of the carbon nano tube to the strong dispersing agent is 95% to 5%; the internal temperature of the temperature-controlled material mixing machine is set to be 90 ℃, and the rotating speed is set to be 300 revolutions per minute;
s5, adding the intermediate layer raw material obtained in the step S3 into a barrel of an extruder; the material barrel of the extruder is divided into a main material barrel and an auxiliary material barrel, the middle layer raw material is placed in the main material barrel, and the extruder is provided with a double distributor die head;
s6, adding the side layer raw material obtained in the step S4 into an auxiliary machine charging basket of an extruder;
s7, extrusion molding; heating the main charging barrel and the auxiliary charging barrel at a constant temperature of 80 ℃ to enable the middle layer raw material and the side layer raw material to be fluid, extruding the fluid through double die heads of a distributor respectively, and finally forming into sheets;
s8, cooling and shaping; cooling the sheet obtained in step S7 by a cooling roll;
s9, rolling; winding the sheet obtained in the step S8 by a sheet winder;
and S10, packaging.
The invention is further configured to: the step S3 is performed 10 minutes before the step S7.
The invention is further configured to: in the step S9, the sheet winder can adjust the winding specification according to the customer' S demand.
By adopting the technical scheme, the sheet winding machine is utilized to manufacture sheets with different model sizes, different packaging requirements of elements with different models can be met, and the applicability is improved.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the translucent sheet material reduces the possibility of dust falling in the transportation process, and improves the safety of elements in the transportation process;
2. the performance is outstanding, and application scope is wide, and the practicality is stronger.
Drawings
Fig. 1 is a schematic view of the overall structure of a translucent sheet in the present application;
in the figure, 1, the intermediate layer; 2. and (5) edge layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a translucent sheet disclosed in the present invention includes an intermediate layer 1 at an inner portion and an edge layer 2 at an outer portion. The middle layer 1 is colorless and transparent, and is formed by mixing polystyrene, transparent rubber and a carbon nano tube melting agent, wherein the polystyrene comprises transparent polystyrene (GPPS) and polystyrene (HIPS). The side layer 2 is light brown semitransparent and is formed by mixing carbon nano tubes and a strong dispersing agent.
The invention also discloses a processing technology of the sheet, which is applied to the processing production of the translucent sheet and comprises the following steps:
s1, primary processing of the raw material of the intermediate layer 1; adding transparent polystyrene, polystyrene and transparent rubber into a mixer, mixing and stirring until the transparent polystyrene, the polystyrene and the transparent rubber are fully and uniformly mixed to obtain a mixed raw material, wherein the ratio of the transparent polystyrene to the transparent rubber is 3: 2: 5, the internal temperature of the mixer is set to be 60 ℃, and the stirring time is not less than one hour; in this embodiment, a domestic homemade housewife 300K automatic temperature control blender is used.
S2, drying; and putting the mixed raw materials of the transparent polystyrene, the polystyrene and the transparent rubber which are uniformly stirred and mixed into a dehumidifying dryer for drying for not less than two hours.
S3, preparing a raw material of the intermediate layer 1; and (4) adding the mixed raw material dried in the step (S2) into a temperature-controlled high-speed stirrer, adding a nanotube compatilizer into the temperature-controlled high-speed stirrer, mixing and stirring until the mixture is uniformly stirred to obtain the raw material of the middle layer 1, wherein the addition amount of the nanotube compatilizer is 1% of the mixed material, and the internal temperature of the temperature-controlled high-speed stirrer is set to be 60 ℃.
S4, preparing a raw material of the edge layer 2; the carbon nano tube and the strong dispersing agent are put into a temperature-controlled mixer together for mixing and stirring for 30-40 minutes before 10 minutes before use until the mixture is uniformly stirred to obtain a raw material of the side layer 2, wherein the mixing ratio of the carbon nano tube to the strong dispersing agent is 95 percent to 5 percent; the inside temperature of control by temperature change formula compounding material machine sets up to 90 degrees centigrade, and the rotational speed sets up to 300 revolutions per minute. In the step, the dispersing agent is used for preliminarily softening the nanotubes and permeating the nanotubes into the nanotubes, so that the dispersibility of the nanotubes is improved, and the nanotubes can uniformly cover the sheet in a net shape in the subsequent extrusion molding step.
S5, adding the raw material of the middle layer 1 obtained in the step S3 into a barrel of an extruder; the storage bucket of extruder divide into main storage bucket and supplementary storage bucket, and 1 raw materials in intermediate level are placed in main storage bucket, and the extruder is provided with two distributor die heads. In this example, a JWS120/33 single screw extruder manufactured by Jevian mechanical manufacturing Co., Ltd, Dongguan was used.
And S6, adding the raw material of the side layer 2 into an auxiliary machine charging basket of the extruder.
S7, extrusion molding; and heating the main charging barrel and the auxiliary charging barrel at a constant temperature of 80 ℃ to ensure that the raw materials of the middle layer 1 and the side layer 2 are changed into fluid shapes, extruding the fluid shapes through double die heads of the distributor respectively, and finally forming into sheets.
S8, cooling and shaping; the sheet obtained in step S7 is cooled by a cooling roller.
S9, rolling; the sheet obtained in the step S8 is wound through the sheet winding machine, in the application, the sheet winding machine can adjust the winding specification according to the requirements of customers, the sheet winding machine is used for manufacturing sheets with different model sizes, different packaging requirements of elements with different models can be met, and the applicability is improved. In this embodiment, a sheet winding device of an authorization notice number CN213325816U developed by this company is used for the sheet winding machine.
And S10, packaging.
The implementation principle of the embodiment is as follows: compared with the traditional black conductive sheet produced by taking carbon black as a raw material, the carbon nanotube is used as a substitute, so that the dust falling phenomenon caused by carbon powder is reduced on the basis of keeping the original performance, and the safety of elements in the sheet in the transportation process is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. A translucent sheet characterized by: the sheet is brown and semitransparent and comprises an edge layer (2) and a middle layer (1) which are sequentially arranged from outside to inside, wherein the edge layer (2) is a mixed layer formed by mixing carbon nanotubes and a strong dispersing agent, the middle layer (1) is a mixed layer formed by mixing polystyrene and transparent rubber, and a carbon nanotube melting agent is also mixed in the middle layer (1).
2. A translucent sheet according to claim 1, characterised in that: the polystyrene includes transparent polystyrene (GPPS) and polystyrene (HIPS).
3. A translucent sheet according to claim 2, characterised in that: the intermediate layer (1) is colorless and transparent.
4. A processing technology of a sheet is characterized in that: process for the production of translucent sheets as claimed in claims 1-3, comprising the steps of:
s1, preliminary processing of the raw material of the intermediate layer (1); adding transparent polystyrene, polystyrene and transparent rubber into a mixer, mixing and stirring until the transparent polystyrene, the polystyrene and the transparent rubber are fully and uniformly mixed to obtain a mixed raw material, wherein the ratio of the transparent polystyrene to the transparent rubber is 3: 2: 5, the internal temperature of the mixer is set to be 60 ℃, and the stirring time is not less than one hour;
s2, drying; putting the mixed raw materials of transparent polystyrene, polystyrene and transparent rubber which are uniformly stirred and mixed into a dehumidifying dryer for drying for not less than two hours;
s3, preparing a raw material of the intermediate layer (1); adding the mixed raw material dried in the step S2 into a temperature-controlled high-speed stirrer, adding a nanotube compatilizer into the temperature-controlled high-speed stirrer, and mixing and stirring until the mixture is uniformly stirred to obtain a raw material of the middle layer (1), wherein the addition amount of the nanotube compatilizer is 1% of the mixed material, and the internal temperature of the temperature-controlled high-speed stirrer is set to be 60 ℃;
s4, preparing raw materials of the side layer (2); putting the carbon nano tube and the strong dispersant into a temperature-controlled mixer together, mixing and stirring for 30-40 minutes until the mixture is uniformly stirred to obtain a raw material of the side layer (2), wherein the mixing ratio of the carbon nano tube to the strong dispersant is 95% to 5%; the internal temperature of the temperature-controlled material mixing machine is set to be 90 ℃, and the rotating speed is set to be 300 revolutions per minute;
s5, adding the raw material of the middle layer (1) obtained in the step S4 into a barrel of an extruder; the material barrel of the extruder is divided into a main material barrel and an auxiliary material barrel, the raw material of the middle layer (1) is placed in the main material barrel, and the extruder is provided with a double distributor die head;
s6, adding the raw material of the side layer (2) into an auxiliary machine charging basket of the extruder;
s7, extrusion molding; heating the main charging barrel and the auxiliary charging barrel at a constant temperature of 80 ℃ to enable the raw materials of the middle layer (1) and the side layer (2) to be fluid, extruding the fluid through double die heads of the distributor respectively, and finally forming into sheets;
s8, cooling and shaping; cooling the sheet obtained in step S7 by a cooling roll;
s9, rolling; winding the sheet obtained in the step S8 by a sheet winder;
and S10, packaging.
5. The process of claim 4, wherein: the step S3 is performed 10 minutes before the step S7.
6. The process of claim 4, wherein: in the step S9, the sheet winder can adjust the winding specification according to the customer' S demand.
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CN202111612188.1A CN114083851A (en) | 2021-12-27 | 2021-12-27 | Semitransparent sheet and processing technology thereof |
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