CN201284064Y - Electromagnetic screen packing film - Google Patents
Electromagnetic screen packing film Download PDFInfo
- Publication number
- CN201284064Y CN201284064Y CNU2008202122338U CN200820212233U CN201284064Y CN 201284064 Y CN201284064 Y CN 201284064Y CN U2008202122338 U CNU2008202122338 U CN U2008202122338U CN 200820212233 U CN200820212233 U CN 200820212233U CN 201284064 Y CN201284064 Y CN 201284064Y
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- film
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- thin layer
- electromagnetic screening
- packing film
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Abstract
The utility model relates to an electromagnetic shielding packing film, which comprises a film main body, wherein, at least one side surface of the film main body is provided with an electromagnetic shielding coating layer, wherein, the electromagnetic shielding layer is made of a compound material that is formed by utilizing hollow micro-balloons of a conducting polymer material to wrap inorganic magnetic conduction nano-particles. The side surface of the packing film is provided with an electromagnetic shielding coating layer that is made of the conducting polymer material and the inorganic magnetic conduction nano-particles, so that the packing film has excellent electromagnetic shielding performance, i.e. the packing film has electricity conduction property, magnetic conduction property and wave suction property. The utility model adopts simple process to produce the electromagnetic shielding packing film; in addition, the film main body is compounded with two layers through a simple process, thereby improving the moisture resistance and the air tightness; in particularly, both side surfaces of the film main body are provided with an electromagnetic shielding coating layer, thereby further improving the electromagnetic shielding property of the packing film.
Description
Technical field
The utility model relates to electric packing film, more particularly, relates to a kind of electromagnetic screening packing film.
Background technology
At present, packing film does not on the market have the performance of conduction, magnetic conduction and suction ripple simultaneously, the preparation method of available electromagnetic shielding material has in the prior art: 1. vacuum metallization composite conductive thin film, on plastic film chip by methods such as vacuum evaporation plating, metallizing, alloy and metallic oxide etc. are made composite conductive thin film, outward appearance has metallic luster, conduct electricity very well, can reach the purpose of electromagnetic screening, but its suitable material is limited, and the equipment cost is big, generation environmental hazard problem.2. filled-type shielding packing, by electrical insulation capability preferably synthetic resin and have the filler of excellent conductive capability and other additive by mixing granulator, and adopt methods such as injection moulding, extrusion forming or compression molding to make.The conductive filler that is adopted can be divided into metal species, carbon element class, metal oxide-type, inorganic salts and compound-type conducting filler etc., the filled-type material has one-time formed characteristics, machine-shaping easily can design various complicated shapes, the advantage cheaply that reaches attractive in appearance, improves reliability of products.Easily influence rerum natura but filled-type shielding packing need high addition, dispersion is uneven, processing difficulties reaches.3. electrically-conducting paint is as electromagnetic shielding material, mainly comprise it being electrically-conducting paints such as silver system, copper system, carbon element system at present, adopt certain technology that it is coated on the plastic sheeting, can make the film packing material of certain electrostatic prevention and electromagnetic performance, electrically-conducting paint can spray or brush the plastic part surface in different shape easily as a kind of fluent material, forms conductive coating, thereby reach the electromagnetic purpose of shielding, become present application electromagnetic shielding material very widely.Silver is that coating property is stable, and shield effectiveness is splendid, but because its cost is too high, can only be applicable under some special occasions and uses; Copper is that the coating shield effectiveness is better, but antioxygenic property is relatively poor; Nickel is that coating price is moderate, and shield effectiveness is good, and oxidation resistance is stronger than copper, and (＜30MHz) shield effectiveness is a coating not as copper at low frequency range but nickel is coating; Carbon element is that the electric conductivity of coating is relatively poor relatively, and is not very good as the effect of electromagnetic screen coating.
The utility model content
The technical problems to be solved in the utility model is, packing film at prior art does not have conduction, magnetic conduction and absorbing property simultaneously, and vacuum metallization composite conductive thin film suitable material is limited among the preparation method of electromagnetic shielding material, and the equipment cost is big, generation environmental hazard problem; Filled-type shielding packing need high addition, disperse inequality, processing difficulties, easily influence rerum natura; Silver is that coating property is stable, and shield effectiveness is splendid, but because its cost is too high, can only be applicable under some special occasions and uses; Copper is that the coating shield effectiveness is better, but antioxygenic property is relatively poor; Nickel is that coating price is moderate, and shield effectiveness is good, and oxidation resistance is stronger than copper, and (＜30MHz) shield effectiveness is a coating not as copper at low frequency range but nickel is coating; Carbon element is that the electric conductivity of coating is relatively poor relatively, as defectives such as the effect of electromagnetic screen coating are not very good, provides a kind of electromagnetic screening packing film.
The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of electromagnetic screening packing film, comprise main film body, at least one side in described main film body is provided with the electromagnetic screening coat, and described electro-magnetic screen layer is made by the composite material that the hollow microsphere of conducting polymer composite wraps up inorganic magnetic conduction nano particle.
In electromagnetic screening packing film described in the utility model, be provided with described electromagnetic screening coat in the two sides of described main film body, described conducting polymer composite is polypyrrole or polyaniline, and described inorganic magnetic conduction nano particle is tri-iron tetroxide or red oxide.
In electromagnetic screening packing film described in the utility model, described main film body comprises the first film layer, and described the first film layer is poly-vinyl resin thin layer or acrylic resin thin layer.
In electromagnetic screening packing film described in the utility model, be provided with second thin layer in a side of described the first film layer, described second thin layer is a laminated polyester film.
In electromagnetic screening packing film described in the utility model, between the described the first film layer and second thin layer, be provided with the binder layer, described binder is a Polyurethane.
In electromagnetic screening packing film described in the utility model, be provided with the 3rd thin layer in the another side of described the first film layer, described the 3rd thin layer is a laminated polyester film.
In electromagnetic screening packing film described in the utility model, between described the first film layer and the 3rd thin layer, be provided with the binder layer, described binder is a Polyurethane.
In electromagnetic screening packing film described in the utility model, be provided with described electromagnetic screening coat in a side of described main film body, described conducting polymer composite is polypyrrole or polyaniline, and described inorganic magnetic conduction nano particle is tri-iron tetroxide or red oxide.
In electromagnetic screening packing film described in the utility model, described main film body comprises the first film layer, and described the first film layer is poly-vinyl resin thin layer or acrylic resin thin layer.
In electromagnetic screening packing film described in the utility model, be provided with second thin layer in a side of described the first film layer, described second thin layer is a laminated polyester film; Be provided with the binder layer between the described the first film layer and second thin layer, described binder is a Polyurethane.
Implement electromagnetic screening packing film of the present utility model, has following beneficial effect: the electromagnetic screening overlay made from conducting polymer composite and inorganic magnetic conduction nano particle is set by side at packing film, make this packing film have the good electric magnetic shield performance, promptly have conduction, magnetic conduction, absorbing property; Adopt simple and easy technology to make the electromagnetic screening packing film in the technical solution of the utility model; Further, main film body forms two-layer compound with simple and easy technology, has increased damp proofly and air tight, especially, in the two sides of main film body the electromagnetic screening coat is set all, thereby has further strengthened the capability of electromagnetic shielding of this packing film.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the utility model electromagnetic screening packing film first embodiment;
Fig. 2 is the structural representation of the utility model electromagnetic screening packing film second embodiment;
Fig. 3 is the structural representation of the utility model electromagnetic screening packing film the 3rd embodiment.
The specific embodiment
The technical solution of the utility model mainly is that the packing film at prior art does not have conduction, magnetic conduction and absorbing property simultaneously, and existing many defectives among the preparation method of electromagnetic shielding material, therefore select for use new type electrical conductive paint to be significant as electromagnetic shielding material, polyaniline (PAn) is because raw material is easy to get, synthesis technique is easy, electric conductivity and excellent in stability, extremely people's favor, aspect applied research, go to the front, become the research focus.Physico-chemical property by the in-depth study electrically conductive polyaniline, it is found that it has the light of many uniquenesses,, magnetic property, so just produced the application of many uniquenesses, with electrically conductive polyaniline as basic material, developing many new and high technologies such as antistatic technology at present, solar cell, overall plastic anti-corrosion of metal technology, the marine antifouling technology, sensor component, electrochemistry and catalysis material, stealth technology, electrochromism etc., and all obtained impressive progress in these technical application explorations, and progressively stride forward to practicability, shown the extremely wide and tempting development prospect of polyaniline.The utility model select for use have conduction, the new function polyaniline electromagnetic screening coating material of magnetic conduction, absorbing property is applied in the plastic film material, adopt simple and easy technology to make composite film material, make the film packing material of preparation have the good electric magnetic shield performance, be of great immediate significance.
Shown in Fig. 1,2 and 3, in three embodiment of electromagnetic screening packing film of the present utility model, comprise main film body, at least one side in this main film body is provided with the electromagnetic screening coat, and electro-magnetic screen layer is made by the composite material that the hollow microsphere of conducting polymer composite wraps up inorganic magnetic conduction nano particle; Wherein, conducting polymer composite is polypyrrole or polyaniline, and inorganic magnetic conduction nano particle is tri-iron tetroxide or red oxide.
Select polyaniline for use for conducting polymer composite, the electromagnetic shielding material that inorganic magnetic conduction nano particle selects for use tri-iron tetroxide to make, the manufacturing process of this electromagnetic shielding material is: polystyrene (PS) is mixed with 98% the concentrated sulphuric acid stirred 24 hours, obtain the PS template (SPS) of sulfonation, at room temperature, with Ammonium Persulfate 98.5 (APS) as oxidizer, aniline monomer polymerization on the SPS template, obtain sulfonated polystyrene polyaniline microsphere (SPS-PAn), handle with tetrahydrofuran then, remove the polystyrene that is coated, obtain the tiny balloon of polyaniline, be designated as HSPS-PAn, this tiny balloon again with ferroferric oxide magnetic fluid react tri-iron tetroxide/polyaniline hollow microsphere compound (HSPS-PAn/Fe
3O
4), with HSPS-PAn/Fe
3O
4Mix with the mass ratio of 1:4 with acrylic acid varnish, add an amount of absolute ethyl alcohol dilution, be stirred well to viscosity and be about 5Pas, get the electromagnetic screening coating material, it has conduction, magnetic conduction and absorbing property simultaneously.
In the main film body of electromagnetic screening packing film of the present utility model, can be single layer structure or lamination layer structure, but in order to make this electromagnetic screening packing film have good damp proof and air tight performance, main film body is carried out the composite bed design, and composite bed is selected polyester (PET), polypropylene (PP) resin and polyethylene (PE) resin for use.
Among first embodiment as shown in Figure 1, be provided with the electromagnetic screening coat in the two sides of main film body, promptly this electromagnetic screening coat comprises the first electromagnetic screening coat 2 and the second electromagnetic screening coat 3.This main film body comprises the first film layer 13 and second thin layer 11, and wherein, the first film layer is to be made by poly-vinyl resin or acrylic resin.Second thin layer 11 is to be made by polyester.When using this electromagnetic screening packing film, generally with the first film layer 13 as inboard near the article that need packing, as the outside, this is good, glossy because of the mylar transparency with second thin layer 11; Have good air-tightness and fragrance protectiveness; Moisture resistance is medium, and rate of perviousness descends at low temperatures.The mechanical characteristics of mylar is good, and its obdurability is best in all thermoplastic plastics, and tensile strength and impact strength are more much higher than general film.In addition, when implementing, the first film layer 13 and second thin layer 11 are by being bonded to one, preferably, be between the first film layer 13 and second thin layer 11, to be provided with binder layer 12, this binder is to be made by Polyurethane, and it makes the first film layer 13 and second thin layer 11 become one after solidifying.General manufacture craft flow process is: the first film layer 13 unreel at the composite roll place with a side scribble binder (being binder layer 12) through the drying tunnel drying second thin layer, 11 films to carry out dry method compound, outside face at the first film layer 13 applies the second electromagnetic screening coat 3 then, the outside face of second thin layer 11 applies the first electromagnetic screening coat 2, promptly forms this electromagnetic screening packing film after the oven dry cooling.This electromagnetic screening packing film conductivity can reach 2.2 * 10
-2S/cm, and have good electromagnetic wave absorption performance reaches maximum loss-15.6dB at 15.0GHz, reaches second largest loss-10.6dB at 9.8GHz, and loss is less than the frequency range of-10dB 8GHz nearly.
If the requirement to conduction, magnetic conduction and absorbing property is not very strict, for cost-cutting can only be provided with the electromagnetic screening coat in a side, as shown in Figure 2 in second embodiment of the present utility model, this main film body includes only the first film layer 13, binder layer 12 and second thin layer 11 equally, only the first electromagnetic screening coat 2 is set in this embodiment at the outside face of second thin layer 11, and in use, the first film layer 13 direct and packaged article contact.
As shown in Figure 3 in the 3rd embodiment of the present utility model, in order further to strengthen the moisture-proof characteristic of this electromagnetic screening packing film, can main film body be set to three-decker, be that main film body comprises the first film layer 13, second thin layer 11 and the 3rd thin layer 15, wherein, the first film layer 13 is made by polypropylene (PP) resin and polyethylene (PE) resin material, second thin layer 11 and the 3rd thin layer 15 are made by polyester (PET) material, binder layer 12 between the first film layer 13 and second thin layer 11 is made by the Polyurethane material, equally, the binder layer 14 between the first film layer 13 and the 3rd thin layer 15 also is to be made by the Polyurethane material.
The utility model describes by several specific embodiments, it will be appreciated by those skilled in the art that, under the situation that does not break away from the utility model scope, can also carry out various conversion and be equal to alternative the utility model.In addition, at particular condition or particular case, can make various modifications to the utility model, and not break away from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole embodiments that fall in the utility model claim scope.
Claims (10)
1, a kind of electromagnetic screening packing film, comprise main film body, it is characterized in that, be provided with the electromagnetic screening coat at least one side of described main film body, described electro-magnetic screen layer is made by the composite material that the hollow microsphere of conducting polymer composite wraps up inorganic magnetic conduction nano particle.
2, electromagnetic screening packing film according to claim 1, it is characterized in that, be provided with described electromagnetic screening coat in the two sides of described main film body, described conducting polymer composite is polypyrrole or polyaniline, and described inorganic magnetic conduction nano particle is tri-iron tetroxide or red oxide.
3, electromagnetic screening packing film according to claim 2 is characterized in that, described main film body comprises the first film layer, and described the first film layer is poly-vinyl resin thin layer or acrylic resin thin layer.
4, electromagnetic screening packing film according to claim 3 is characterized in that, is provided with second thin layer in a side of described the first film layer, and described second thin layer is a laminated polyester film.
5, electromagnetic screening packing film according to claim 4 is characterized in that, is provided with the binder layer between the described the first film layer and second thin layer, and described binder is a Polyurethane.
6, electromagnetic screening packing film according to claim 4 is characterized in that, is provided with the 3rd thin layer in the another side of described the first film layer, and described the 3rd thin layer is a laminated polyester film.
7, electromagnetic screening packing film according to claim 6 is characterized in that, is provided with the binder layer between described the first film layer and the 3rd thin layer, and described binder is a Polyurethane.
8, electromagnetic screening packing film according to claim 1, it is characterized in that, be provided with described electromagnetic screening coat in a side of described main film body, described conducting polymer composite is polypyrrole or polyaniline, and described inorganic magnetic conduction nano particle is tri-iron tetroxide or red oxide.
9, electromagnetic screening packing film according to claim 8 is characterized in that, described main film body comprises the first film layer, and described the first film layer is poly-vinyl resin thin layer or acrylic resin thin layer.
10, electromagnetic screening packing film according to claim 1 is characterized in that, is provided with second thin layer in a side of described the first film layer, and described second thin layer is a laminated polyester film; Be provided with the binder layer between the described the first film layer and second thin layer, described binder is a Polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202122338U CN201284064Y (en) | 2008-09-25 | 2008-09-25 | Electromagnetic screen packing film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202122338U CN201284064Y (en) | 2008-09-25 | 2008-09-25 | Electromagnetic screen packing film |
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|---|---|
| CN201284064Y true CN201284064Y (en) | 2009-08-05 |
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ID=40949048
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| CNU2008202122338U Expired - Lifetime CN201284064Y (en) | 2008-09-25 | 2008-09-25 | Electromagnetic screen packing film |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891910A (en) * | 2010-08-27 | 2010-11-24 | 哈尔滨工业大学 | Composite radar wave absorbing thin film and preparation method thereof |
| CN102251702A (en) * | 2011-04-22 | 2011-11-23 | 东北电力大学 | Activated powder concrete pole with high strength and high conductivity and making method thereof |
| CN102337101A (en) * | 2010-07-16 | 2012-02-01 | 财团法人工业技术研究院 | Composition for electromagnetic shielding, device using same and structure preparation method |
| CN103087624A (en) * | 2013-01-31 | 2013-05-08 | 南昌航空大学 | Ultraviolet light-cured polyaniline/Fe3SO4 wave absorbing coating |
| CN103331981A (en) * | 2013-06-25 | 2013-10-02 | 苏州市星辰材料有限公司 | Shielding material |
| CN104626696A (en) * | 2015-01-22 | 2015-05-20 | 惠州市浩明科技发展有限公司 | Battery shielding film and preparation method thereof |
| CN107877893A (en) * | 2017-11-24 | 2018-04-06 | 河南工程学院 | Preparation method of electromagnetic shielding PP film |
| CN109046906A (en) * | 2018-07-19 | 2018-12-21 | 南昌航空大学 | A kind of multicoat structure Infrared stealthy materials |
| CN115534443A (en) * | 2022-10-08 | 2022-12-30 | 苏州盛达飞智能科技股份有限公司 | Electromagnetic shielding material for hard package |
-
2008
- 2008-09-25 CN CNU2008202122338U patent/CN201284064Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337101A (en) * | 2010-07-16 | 2012-02-01 | 财团法人工业技术研究院 | Composition for electromagnetic shielding, device using same and structure preparation method |
| CN102337101B (en) * | 2010-07-16 | 2014-06-11 | 财团法人工业技术研究院 | Composition for electromagnetic shielding, device using same and structure preparation method |
| CN101891910A (en) * | 2010-08-27 | 2010-11-24 | 哈尔滨工业大学 | Composite radar wave absorbing thin film and preparation method thereof |
| CN102251702A (en) * | 2011-04-22 | 2011-11-23 | 东北电力大学 | Activated powder concrete pole with high strength and high conductivity and making method thereof |
| CN102251702B (en) * | 2011-04-22 | 2013-06-26 | 东北电力大学 | Activated powder concrete pole with high strength and high conductivity and making method thereof |
| CN103087624A (en) * | 2013-01-31 | 2013-05-08 | 南昌航空大学 | Ultraviolet light-cured polyaniline/Fe3SO4 wave absorbing coating |
| CN103087624B (en) * | 2013-01-31 | 2016-05-18 | 南昌航空大学 | A kind of UV curing polyaniline/FeSO4Microwave absorbing coating and preparation method thereof |
| CN103331981A (en) * | 2013-06-25 | 2013-10-02 | 苏州市星辰材料有限公司 | Shielding material |
| CN104626696A (en) * | 2015-01-22 | 2015-05-20 | 惠州市浩明科技发展有限公司 | Battery shielding film and preparation method thereof |
| CN107877893A (en) * | 2017-11-24 | 2018-04-06 | 河南工程学院 | Preparation method of electromagnetic shielding PP film |
| CN109046906A (en) * | 2018-07-19 | 2018-12-21 | 南昌航空大学 | A kind of multicoat structure Infrared stealthy materials |
| CN115534443A (en) * | 2022-10-08 | 2022-12-30 | 苏州盛达飞智能科技股份有限公司 | Electromagnetic shielding material for hard package |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090805 |
|
| CX01 | Expiry of patent term |