CN114083851A - Semitransparent sheet and processing technology thereof - Google Patents

Semitransparent sheet and processing technology thereof Download PDF

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Publication number
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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CN
China
Prior art keywords
layer
polystyrene
raw material
mixed
sheet
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Pending
Application number
CN202111612188.1A
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Chinese (zh)
Inventor
段怀勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Angshi New Material Co ltd
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Suzhou Angshi New Material Co ltd
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Priority to CN202111612188.1A priority Critical patent/CN114083851A/en
Publication of CN114083851A publication Critical patent/CN114083851A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00Layered products comprising a layer of natural or synthetic rubber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005Layered 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
    • B32B9/007Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04Layered 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
    • B32B9/043Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04Layered 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
    • B32B9/045Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D65/00Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38Packaging materials of special type or form
    • B65D65/40Applications of laminates for particular packaging purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00Flat articles, e.g. films or sheets
    • B29L2007/002Panels; Plates; Sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00Layered products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/40Properties of the layers or laminate having particular optical properties
    • B32B2307/414Translucent

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

Semitransparent sheet and processing technology thereof
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.
CN202111612188.1A 2021-12-27 2021-12-27 Semitransparent sheet and processing technology thereof Pending CN114083851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111612188.1A CN114083851A (en) 2021-12-27 2021-12-27 Semitransparent sheet and processing technology thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111612188.1A CN114083851A (en) 2021-12-27 2021-12-27 Semitransparent sheet and processing technology thereof

Publications (1)

Publication Number Publication Date
CN114083851A true CN114083851A (en) 2022-02-25

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CN111848886A (en) * 2020-08-06 2020-10-30 丁文华 Nitrile rubber-carbon nanotube synergistically toughened modified polystyrene material and preparation method thereof

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