TW201205599A - Electromagnetic shielding composition, electromagnetic shielding device, anti-electrostatic device and method of manufacturing electromagnetic shielding structure - Google Patents

Abstract

An electromagnetic shielding composition includes a carrier, a plurality of metal nanowires and a plurality of nanoparticles. The plurality of metal nanowires are dispersed within the carrier and in an amount of from 1 to 95 weight percent on the 100 weight percent total composition basis. The plurality of nanoparticles are dispersed within the carrier solution and are in an amount of from 0.1 to 60 weight percent on a 100 weight percent total composition basis.

Description

201205599 VI. Description of the Invention: [Technical Field of the Invention] The present disclosure relates to a composition for electromagnetic shielding, and more particularly to a composition having a nanowire and a nanoparticle. [Prior Art] With the advancement of wireless communication technology, wireless communication devices such as mobile phones and the like are widely used. Since the wireless communication device and its base station generate electromagnetic waves, it is easy to cause the environment to be filled with electromagnetic waves. In addition, many commonly used electronic products, such as computers or microwave ovens, also generate tiny electromagnetic waves. According to a report published by the World Health Organization in 1998, people who have been exposed to higher than the standard value of electromagnetic waves for a long time are prone to diseases such as cardiovascular disease, diabetes or cancer, or are prone to diseases of the reproductive system, immune system, nervous system, etc., or Cause abortion, abortion or infertility in pregnant women. Long-term exposure to children above the standard value of electromagnetic waves is prone to slow bone development, decreased hematopoietic function, visual decline, and even retinal detachment. It can be seen that electromagnetic waves have a great impact on the health of the human body. At present, the traditional method of shielding electromagnetic waves is to shield the electromagnetic wave source by using a metal block or a metal casing. However, due to its heavy weight and difficulty in fitting the desired shape, the m is used for a long period of time, which is easy to be used for oxidative damage, and thus cannot be conveniently used in each. On electronic products. Another method of shielding electromagnetic waves is to mix metal particles in a colloid or lacquer to form an electromagnetic wave shielding layer on the body in a coating manner. The electromagnetic wave shielding layer is light and can be made with various shapes. However, in order to achieve a certain degree of electromagnetic wave shielding effect of 201205599 degrees, it is necessary to add a high concentration of metal particles in the colloid or lacquer. High-concentration metal particles increase the shielding effect, but reduce the plasticity and strength of the hybrid material, and lose the advantages of easy processing, light weight, and low cost. Further, the "electromagnetic wave shielding layer generally has only a single outer shape of metal particles" to increase the content of the metal particles in order to improve the shielding effect, and generally the improvement of the electromagnetic shielding efficiency (Singing Effectiveness; S.E.) is limited. In addition, the conventional electromagnetic wave shielding layer usually needs to be prepared to a thickness of 25 Å or more in order to have a remarkable electromagnetic wave shielding effect. However, the preparation of a thick electromagnetic wave shielding layer is not uniform and wastes a lot of material. In view of the deficiencies of the conventional method of shielding electromagnetic waves, it is necessary to develop an electromagnetic shielding material having the advantages of high electromagnetic shielding rate, low cost, and ease of use. SUMMARY OF THE INVENTION One embodiment of the present disclosure discloses a composition for electromagnetic shielding comprising a carrier, a plurality of nanowires, and a plurality of nanoparticles. A plurality of nanowires are interspersed in the carrier, wherein the nanowires are between [parts by weight to weight" based on 100 parts by weight of the composition. A plurality of nanoparticles are dispersed in the carrier, wherein the nanoparticles are between 1 part by weight and parts by weight based on the weight of the composition. Another embodiment of the present disclosure discloses a composition for electromagnetic shielding in which eight packs of 3-carriers, a plurality of nanowires, and a plurality of nano-particles of nanowires are interspersed in the carrier. The aspect ratio of the nanowires is greater than H). The nano metal wire is gold, silver, copper, indium, 201205599, sho, iron H or a mixture, alloy or oxide of the foregoing metal, and the composition is 1 GG by weight of the composition, and the metal wire is obtained. In the case of ^ injured to 95 weights. A plurality of nanoparticles are interspersed in the carrier. The nanoparticles are less than 1 GG() nanometer. The nanoparticle is gold, silver, copper, indium, gamma, m or a mixture, alloy or oxide of the foregoing metal, wherein the nano green is between 1 part by weight based on the weight of the composition. Up to 60 parts by weight. Another embodiment of the present disclosure discloses a composition for electromagnetic shielding, an eight pack 3 carrier, a plurality of nanowires, and a plurality of nanoparticles. A plurality of nanowires are interspersed in the carrier. The long metal kneading ratio of the nano metal wires is greater than 10. The nanowire is a mixture, alloy or oxide of gold, silver, steel, indium, palladium, sulphur, iron, cobalt, nickel or the foregoing metals. A plurality of nanoparticles are interspersed in the carrier. The nanoparticles are smaller than ι〇〇〇 nano. The nanoparticles are gold, silver, copper, indium, palladium, aluminum, iron, cobalt, nickel or a mixture, alloy or oxide of the foregoing metals. The composition of the nano metal wire is from 1 part by weight to 2 parts by weight, and the nano particles are between 5% and 4 parts by weight, so that it is used for electromagnetic The shielded composition has an electromagnetic wave shielding efficiency value greater than 10 dB. Another embodiment of the present disclosure discloses a composition for electromagnetic shielding comprising a carrier, a plurality of nanowires' and a plurality of nanoparticles. The plurality of nanowires are interspersed in the carrier. The nano metal wires have a length to diameter ratio of 2 to 500 » The nano metal wire is gold, silver, copper 'molybdenum! She's a mixture, alloy or oxide of the metals mentioned above. A plurality of particles are interspersed in the carrier. The nanoparticle particles 201205599 have a diameter of 30 to 1 nanometer. The nanoparticles are gold, silver, copper, indium, palladium, iron, diamond, or a mixture of the foregoing metals 'alloys or oxides. Wherein the composition is 1 part by weight of the 'the nano metal wire is between 1 and _ to 3 parts by weight', and the total weight of the nano particles is 〇. 5 parts by weight to The composition thus used for electromagnetic shielding has an electromagnetic wave shielding efficiency value of more than 10 dB, 4 parts by weight. An embodiment of the invention discloses an electromagnetic shielding device comprising a body and a film, wherein a film is formed on the body to shield electromagnetic waves. The film comprises a plurality of nanowires and a plurality of nanoparticles, wherein the plurality of nanowires and the plurality of nanoparticles are respectively dispersed in the film, and the film is 1 part by weight, The metal wire is between ι and 95 parts by weight, and the nano particles are between parts by weight and 6 ounces. One embodiment of the invention discloses an antistatic device. The film comprises a substrate and a film, and the film comprises a film. Formed on the substrate, the film comprises a plurality of nanowires and a plurality of nanoparticles, wherein the plurality of nanowires and the plurality of nanoparticles are respectively dispersed in the film, and the film is reset by 100 And the nano metal wires are between 1 part by weight and 95 parts by weight; and the nano particles are between 〇丨 parts by weight and 6 parts by weight. Step of providing: providing a target; comprising a plurality of nanowires, the present invention further provides a method for preparing an electromagnetic shielding structure, comprising: providing a mixed material, the mixed material package

The first film; and the heating of the first knowledge "on one of the recording surfaces, the film is formed to a temperature between 50 degrees Celsius and 250 degrees 201205599 degrees Celsius. [Embodiment] One embodiment of the present disclosure discloses a composition for electromagnetic shielding comprising a carrier, a plurality of nanowires, and a plurality of nanoparticles. The plurality of nanowires are dispersed in the carrier; the plurality of nanoparticles are dispersed in the carrier β number of nanowires and the plurality of nanoparticles are mixed with each other. In one embodiment, the content of the plurality of nanowires is between 1 part by weight and 95 parts by weight based on 100 parts by weight of the composition, and the number of the composition is 100 parts by weight. The content of the rice particles is from 1 part by weight to part by weight. In another embodiment, the content of the nanoparticles is from 3 parts by weight to 40 parts by weight. In another embodiment, the content of the nanoparticles is from 5 parts by weight to 20 parts by weight. In another embodiment, the nanoparticles are present in an amount of from 0.5 parts by weight to 10 parts by weight. In another embodiment, the content of the nanoparticles is from ” by weight to 4 parts by weight. In another embodiment, the nanoparticles are present in an amount of from 2 parts by weight to 2 parts by weight. In a consistent embodiment, the content of the plurality of nanowires is between 1 part by weight and 95 parts by weight based on the weight of the composition, and the number of the composition is 100 parts by weight, and the plurality of The content of the nanoparticles is between 5 parts by weight to 5% by weight. In one embodiment, the content ratio of the plurality of nanowires to the plurality of nanoparticles may be greater than 0.1. One embodiment of the present disclosure discloses a cured body which is cured from the aforementioned composition. In one embodiment, the aforementioned cured body may be one of a film on the electromagnetic 201205599 shielding device or one of the antistatic devices. The nano-metal wire can form a conductive structure so that the cured body can be substantially electrically conductive. According to the inference, the addition of nano particles can change the optical path difference of the electromagnetic wave, so that the electromagnetic wave energy can be lost in the solidified body. Therefore, by mixing the nano particles into the nano metal wire, the electromagnetic shielding efficiency of the solidified body can be significantly improved (shielding Effectiveness; SE) The plurality of nanoparticles disclosed herein may have a particle size of less than 1 nanometer. In an embodiment, the nanoparticles can be electrically conductive particles. In another embodiment, the 'nano particles may be nano metal particles, and the material may be gold, silver, copper, samarium, stellite, iron, cobalt, nickel or a mixture of the foregoing metals or an alloy of the foregoing metals or the foregoing An oxide of a metal wherein the composition of the composition is from 1 part by weight to 2 parts by weight based on the total weight of the composition. In still another embodiment, the nanoparticles may be gold-coated silver nanoparticles, silver-coated gold nanoparticles, gold-coated copper nanoparticles, copper-coated gold nanoparticles, and silver-coated copper nanoparticles. Particles, copper coated silver nanoparticles or a combination of the foregoing. In an embodiment, the nanoparticles may be magnetically permeable particles and they may comprise ferromagnetic elements. In another embodiment, the nano particles may be insulating magnetic conductive particles, and the material thereof may include triiron tetroxide, wherein the nano particles may be 0.5 parts by weight to 4 parts by weight of the composition. Between 5 parts by weight and 2 parts by weight between parts by weight. In one embodiment, the nanoparticles may be nano silver particles, nano titanium oxide particles, or a mixture of the foregoing particles, wherein the nano particles may be 0.5 based on the composition. Parts by weight to 4 parts by weight or 0.5 part by weight from 201205599 parts to 2 parts by weight. In one embodiment, the 'nanoparticles are conductive particles, magnetically permeable particles, insulating magnetically permeable particles, or a combination thereof, and the nanoparticles are intercalated from 5 parts by weight to 2 parts by weight. In one embodiment, the nanoparticles may have a particle size greater than 1 nanometer, or such as h between 30 and 1 nanometer. In one embodiment, the nanoparticles may have a particle size between 30 nanometers and 5 nanometers. The composition is cured into a cured body, and a plurality of nanowires are uniformly distributed in the cured body. In the implementation, a plurality of nanowires can form a network structure in the cured body, so that the cured body has a low surface resistivity, for example, less than 1 ohm/square (Q/sqr). In another embodiment, the composition comprises a small amount of nanowire metal, and after the composition is cured into a cured body, the plurality of nanowires can form a network structure or network-like structure in the cured body, wherein the network The structure or network structure allows the cured body to have a higher surface resistivity (Caf (6) (four)... kiss) value, for example between 10 and 1 〇 δ ohms/square (Q/Sqr). In still another embodiment, the composition comprises a small amount of a nylon wire, and after the composition is cured into a cured body, the plurality of nanowires can form a network structure or a network-like structure in the cured body. The network structure or network-like structure allows the cured body to have a higher surface resistivity (four) faee resistivity value, for example, between 104 and 1 〇 12 ohms/square (Q/sqr), so that the cured body can be applied to antistatic occasion. , and the mouth can be made of three high aspect rati nanowires. The high aspect ratio nano metal wire can greatly improve the 201205599 electromagnetic shielding efficiency of the cured body. In addition, the use of high aspect ratio nanowires can further reduce the use of nanowires. In one embodiment, the nanometer metal wire may have an aspect ratio greater than 1 〇, or such as between 20 and 500' or such as between 5 〇 and 3 。. In one embodiment, the nanowire may be gold, silver, copper, indium, palladium, aluminum, iron, cobalt, nickel, or a mixture, alloy or oxide of the foregoing. In another embodiment, the metal wire may be a gold-coated silver nanowire, a silver-coated gold nanowire, a gold-coated copper nanowire, a copper-coated gold nanowire, or a silver-coated copper nano. Rice wire, copper coated silver nanowire or a combination of the foregoing. The carrier can comprise a face molecular material. The polymer material may comprise a thermoplastic plastic such as an acrylic resin or a thermosetting plastic such as an epoxy resin. In one embodiment, the carrier may also be a photo-crosslinking or thermally criss-slinking polymer material, using a mixed material of a metal or a magnetically conductive nano material, in a target. A film is formed on the target to make the target have an electromagnetic shielding effect. If the film is applied with light or heat, the electromagnetic shielding efficiency of the film can be further improved. Since the electromagnetic shielding efficiency of the film is improved, the thickness of the film can be reduced without detracting from the electromagnetic wave shielding effect required. Reduced thickness allows for a more uniform film and reduces the amount of material used. The film can be heated to a temperature between 50 degrees Celsius and 250 degrees Celsius. The hybrid material may comprise a nano material and a carrier, wherein the carrier may be a polymer material, and the nano material may be a nano metal wire, and the nano metal wires may have an aspect ratio of greater than 5 Å. In one embodiment, the carrier may also be photocross-linked (photo_cr〇sslinking) or hot-crossed 201205599 thermally reactive polymer polymeric material. The film can be heated to a temperature between 50 degrees Celsius and 25 degrees Celsius for a period of time (at least 5 minutes or more) to increase the electromagnetic shielding efficiency of the film between 3 〇jJi6g by at least 5. In an embodiment, the film is heated for at least 4 minutes at a temperature between Celsius and 250 degrees Celsius. In the embodiment, the heating is at least 1 hour or more. In an embodiment, the film is heated at a temperature between 60 degrees Celsius and Celsius for from $minutes to more than 2 hours. The material of the nano metal wire can be gold, silver, steel, steel, Ji, Shao, iron, Ming or Jin. The material of the nano metal wire may also be gold, silver, copper, marriage, surface, Ming, iron, cobalt, nickel or a mixture of the foregoing metals, or gold, silver, copper, indium, pour, Ming, iron, Ming, Record or oxide of the aforementioned metal. In one embodiment, the film may further comprise a plurality of na[iota]s, wherein the nanoparticles are metal nanoparticles, stellar particles or mixtures thereof. The gold nanoparticles can be silver particles. The magnetic permeability can be a ferroferric oxide particle. The nanoparticle is smaller than the kanami (for example, between 3 〇 nanometer and nanometer nanometer or between 30 nanometers and 500 nanometers, the film is used as the amount of the sun's particle. Between parts, 〇·3 to 40 parts by weight between '0'5 to 2 parts by weight, or even * parts by weight or 〇$ to 2 parts by weight. a film, wherein one film comprises a wire, a wire, and a metal or magnetically conductive nano particle. The object may be depending on the application. For example, when applied to an electronic device, the object may be a housing of the electronic device. Circuit board or electronic device on electronic device 12 201205599 The component to be shielded by electromagnetic is placed. In addition, the target may also be a substrate carrying a film. Several examples are given below to explain the disclosure in more detail. The preparation method described can be used to formulate a combination of different nano metal wires and nano particles. In each sample, first, a nano silver wire having an aspect ratio of more than 2 Å is synthesized. The preparation method of the nano silver wire can be Laser ablation method (丨"" ablation method" Metal vap〇r "chemicai recjucti 〇n meth〇d" or polyol method » The preparation method described above is well known to those skilled in the relevant art, and therefore no longer Secondly, the synthesized nano silver wire and nano particles are added into a polymer material to obtain a composition. The composition can utilize a ultrasonic oscillating device and a planetary centrifugal mixer. The nano silver wire and the nano particles are uniformly dispersed in the polymer material. Then, the composition is appropriately shaped and solidified to obtain a solidified body. Finally, the electromagnetic wave shielding efficiency value of the cured body is tested. The electromagnetic wave shielding efficiency value can be tested. A standard electromagnetic wave test method is used, for example, ASTM D4935-99, etc. Generally, the electromagnetic wave shielding efficiency value (SE) can be expressed by the following formula.

S.E. = -10 X logZsHL I in where 'Iin is the electromagnetic wave intensity of the incident test sample; IDut is the electromagnetic wave intensity of the test sample. Table 1 illustrates six different concentrations of the composition. Composition (sample 1 to sample 5) 13 201205599 The same weight fraction of silver wire (Ag nanowire; AgNW) but different weight parts of ferroferric oxide particles (Fe304 nanoparticle; Fe304NP) mixed into the polymer solution Prepared in which the content of the nano silver wire is 1.22 parts by weight, and the content of the triiron tetroxide particles is between 0 and 1.88 parts by weight, and the foregoing The polymer material is ETERSOL 6515 unsaturated poly S resin (source: ETERNAL CHEMICAL CO., LTD, Taiwan). The high molecular material comprises an aqueous solution of polydecyl methacrylate. The thioglycolic acid is about 45 to 55 parts by weight and the water is about 55 to 45 parts by weight based on 100 parts by weight of the polymer material. Further, the aforementioned aspect ratio of each of the silver wires is 250, and the particle size of the ferroferric oxide particles is 100 nm. In sample 6, only the ferroferric oxide particles were mixed into the molecular solution, wherein the content of the ferroferric oxide nanoparticles was 9〇9 weight=part. After the samples 1 to 6 were uniformly mixed, they were separately prepared into a film of 5 μm thick thickness. Finally, the electromagnetic wave shielding ratio of these films was tested. Table 1 Sample 1 Sample 2 Sample 3 Sample 4 Particle Control * 100 nm of iron oxide particles (parts by weight) 0 0.13 0.31 ------ 0,63 Nano silver wire with a length to diameter ratio of 250 (weight 1.22 1.22 1.22 1~-- 1.22 ETERSOL 6515 (parts by weight) 49.39 49.325 49.235 49.075 Sample 5 1.88 1.22 48.45 Sample 6 9.09 As shown in Figure 1 and Figure 2, the test results from sample 5 can be found, 201205599 The content of the iron oxide nanoparticles is increased, and the efficiency of shielding the electromagnetic waves by the film is also increased. When the content of the ferroferric oxide nanoparticles is between 1 and 3 parts by weight, particularly between 0.5 and 2 parts by weight, a good electromagnetic wave shielding efficiency value is obtained. Therefore, it can be seen that an appropriate amount of the magnetic conductive particles is added to the film in which the nano metal wire is mixed, and the electromagnetic wave shielding efficiency can be remarkably improved, but when too much magnetic conductive particles are added to the film in which the nano metal wire is mixed, As a result, the more magnetic conductive particles speculated by the prior art, the better the opposite effect. Therefore, when the particle size of the ferroferric oxide nanoparticle is 8〇~12〇 nanometer, and the aspect ratio of the nano silver wire is 200~3 00, the content of the ferroferric oxide nanoparticle can be between 0.1 to 3 parts by weight or 〇. 5 to 2 parts by weight. Further, it can be seen from the test results of the sample 6 that although the ferroferric oxide particles are magnetically conductive particles', only a film of 9.09 parts by weight of ferroferric oxide nanoparticles is mixed, which has no electromagnetic shielding effect. According to the test result of the sample 6, it is inferred that the content of less than 9.09 parts by weight of the ferrotitanium tetraoxide particles is mixed into the film of the nanowire, which should not improve the electromagnetic wave shielding effect. However, the experiment of the present disclosure found that the incorporation of a low content of ferroferric oxide nanoparticles in a film having a nanowire metal material allows the film to have an unexpected improvement in the electromagnetic wave shielding efficiency value. Experimental Example 2 The composition of Table 2 (samples 7 to 9) was mixed with 1.22 parts by weight of nano silver wire and mixed with 0 to 1 _24 parts by weight of triiron tetanate, respectively, based on 100 parts by weight of the composition. The particles, wherein the nano silver wire has an aspect ratio of 80, and the 15 201205599 triiron tetroxide particles have a particle diameter of 100 nm. Samples 7 to 9 after the completion of the mixing were separately formed into a film having a thickness of 50 μm to test the electromagnetic wave shielding efficiency value. The composition comprises a polymeric material and the polymeric material comprises an aqueous solution of polymethyl methacrylate. If the polymer material is 1 part by weight, the content of methyl methacrylate is about 45 to 55 parts by weight, and the water is about 55 to 45 parts by weight. Table 2 Sample 7 Sample 8 Sample 9 Particle size 100 nm Rice triiron tetroxide particles (parts by weight) 0 0.62 1.24 Nano silver wire with a length to diameter ratio of 80 (parts by weight) 1.22 1.22 1.22 Polydecyl methacrylate (parts by weight) 49.39 49.08 48.67 ^Photo 2 As shown in Fig. 3, the films produced in samples 7 to 9 have lower electromagnetic shielding efficiency than the results of samples 4 and 5 in which the content of ferroferric oxide particles and nano silver wires are similar. From the results of the simulation shown in Fig. (10), it can be inferred that the electromagnetic shielding efficiency decreases as the aspect ratio of the nano silver wire decreases, and the samples 7 to 9 may be due to the use of a relatively low diameter nano silver wire. , making its electromagnetic shielding less efficient. "The film produced in sample 4 has an electromagnetic shielding efficiency between 38 and 58 dB at a frequency between 2 and 16 GHz. In contrast, the electromagnetic shielding efficiency of the sample (10) in the same frequency range is acceptable. Between 20 and 27 dB. Ίτ' rice silver wire length; ^ ratio of influence, similar to the previous experiment, with the sample 201205599 this 7 to sample 9 film, the content of triiron tetroxide nanoparticles is more and more, The electromagnetic shielding efficiency is higher. Furthermore, the electromagnetic shielding effect of the film made with the sample 4 between 2 and 16 GHz is between 38 and (10). Compared with the ground, it can be seen from Fig. 3 that even the oxidized three After the iron nanoparticle content is increased to U parts by weight (sample 9), the electromagnetic shielding efficiency of the film is still less than 35 dB. It can be seen that adjusting the length of the nano silver wire in the film to compare the electromagnetic shielding efficiency of the film The effect is that the nanoparticle in the film is adjusted to A °. Generally, the aspect ratio of the nano silver wire can be 10 or more, 8 〇 or more, or 100 to 3 〇〇. Experimental Example 3 The composition is 100 weight. The composition of Table 3 (samples 10 to 13) contains 1,14 parts by weight. The nano silver wire and the ferrotitanium tetraoxide particles respectively in a content of % by weight, wherein the aspect ratio of the nano silver wire is 250 ' and the particle size of the ferrotitanium tetraoxide particle is ι 〇〇 nanometer After the mixing is completed, the sample 1 to the sample 13 are respectively formed into a film having a thickness of 5 μm to test the electromagnetic wave shielding efficiency value. The composition comprises a polymer material, and the polymer material comprises a polydecyl methacrylate aqueous solution. The polymer material is ι by weight, the methyl methacrylate content is about 45 to 55 parts by weight, and the water is about 55 to 45 parts by weight. Table 3 Sample 10 Sample 11 Sample 12 ------ -- Sample 13 Iron oxide particles (parts by weight) with a particle size of 100 nm 0 0.66 1.33 1.99 17 201205599 Nano silver wire with a length to diameter ratio of 250 (parts by weight) 1.14 1.14 1.14 1.14 Poly(methyl methacrylate) Parts by weight 49.43 49.1 48.765 48.435 Referring to Fig. 2 and Fig. 4, compared with the experimental results of the film of similar ferrotitanium oxide particles 3 2 in Fig. 2, since the samples 1 to 13 have Low content of nano silver wire, so take sample 10 to The film produced in sample 13 has a lower electromagnetic shielding efficiency value. For example, comparing the results of samples 4 and 5 with the results of sample 12, the electromagnetic shielding efficiency of the film made with samples 4 and 5 at a frequency of 7 to 16 GHz Between 36 and 58 dB, and the electromagnetic shielding efficiency of the sample 12 in the same frequency range is in the range of 22~27{1]8. In addition, from the experimental results of the experimental example 3, it can be seen that In the case of a film in which iron tetraoxide nanoparticles are not added, the film can be greatly improved in electromagnetic shielding efficiency by adding m parts by weight of iron oxide nanoparticles. When the same amount is added, such as 199 parts by weight of the ferroferric oxide nanoparticle of the sample 13, the electromagnetic shielding efficiency is lowered. From the above results, it can be seen that from the experimental results of the sample 4 and the sample 5 in FIG. 2 and the sample U, the sample 12 and the sample 13 in FIG. 4, when the weight of the wire in the film material is 3 When the amount is less than or equal to 2%, if more than 2 parts by weight of particles are added, there is little influence on the improvement of the electromagnetic shielding rate. SUt, when the titanate (4) sub-particle size (10) ~ i2n green line length to diameter ratio is 200~30G, and the wire material in the film material is part by weight, the content of the ferroferric oxide particles can be 0.1 〜3 parts by weight, 0.2 to 2 parts by weight or 1 to 2 parts by weight. 201205599 Experimental Example 4 The composition of Table 4 (Sample 14 to Sample 17) contained 3 parts by weight of nano silver wire and contained respectively in an amount of 〇 丨 丨 by weight of 100 parts by weight of the composition. The iron nanoparticle, wherein the nano silver wire has an aspect ratio of 250, and the ferroferric oxide nanoparticle has a particle size of 〇5 μm. Samples 14 to 17 after the completion of the mixing were respectively formed into a film having a thickness of 5 μm to measure the electromagnetic wave shielding efficiency value. The composition comprises a polymeric material and the polymeric material comprises a polymethylmethacrylate aqueous solution. The methyl methacrylate content is about 45 to 55 parts by weight, and the water is about 55 to 45 parts by weight, based on 1 part by weight of the polymer material. Table 4 Sample 14 Sample 15 Sample 16 Sample 17 Ferric oxide particles (parts by weight) with a particle size of 0.5 μm 0 0.61 1.2 1.79 Nano silver wire with a length to diameter ratio of 250 (parts by weight) 3 3 3 3 Polymethacrylic acid Methyl ester (parts by weight) — 48.5 48.195 47.9 47.605 Referring to Figure 2 and Figure 5, compared to the experiment of Figure 2, samples 14 to 17 have a higher content of nano silver wire, so sample 14 to sample The film produced by 17 can have a lower surface resistivity. Comparing the experimental results of Fig. 2 and Fig. 5, it can be found that the films prepared from the samples 14 to 17 do not significantly improve the electromagnetic shielding efficiency due to the lower surface resistivity. For example, comparing sample 5 with sample 17, the film produced by sample 5 has an electromagnetic shielding efficiency of between about 36 and 53 pm between frequencies of 201205599 64 6 GHz, while the film made with sample 17 is within the correlation rate, and its electromagnetic The shielding efficiency is about the lower 9~ listening range. Thus, as the concentration of the wire increases, the particle size increases at a similar concentration, which appears to have a more pronounced effect on the high frequency. Further, referring to FIG. 5, comparing the film of the sample 14 to the sample (4) = electromagnetic shielding efficiency, in most of the frequency range, the electromagnetic shielding efficiency is improved with the increase in the content of the ferroferric oxide particles. Compared with the film in which the Fe3O4 nanoparticles are not added, the electromagnetic shielding efficiency is significantly improved after the film is added with 12 parts by weight of the ferroferric oxide particles. Similarly, when more triiron tetroxide particles are added, such as a sample of (3) parts by weight of ferroferric oxide particles, the electromagnetic shielding efficiency is instead lowered. Therefore, when the particle size of the ferroferric oxide nanoparticle is ~· nanometer, the aspect ratio of the nano silver wire is 200~3〇〇, and the nanowire in the film material is increased to more than 3 parts by weight, the tetraoxide The content of the triiron nanoparticles may be between 0.1 and 3 parts by weight, between 2 and 2 parts by weight or between 3 and 2 parts by weight. Further, it can be seen from the comparison of the experiments of Fig. 2 and Fig. 3 that the use of a nanometer wire having a high aspect ratio contributes to an improvement in the electromagnetic shielding efficiency of the film. Moreover, referring to FIG. 10, when the nanowire in the film material is increased to more than 3 parts by weight, the electromagnetic efficiency cannot be significantly improved; instead, if a different size of nano metal is added to the film material (4) The magnetic particles can change the optical path difference of the electromagnetic wave of the film material in the high frequency band, and can effectively improve the shielding rate. Experimental Example 5 The composition of Table 5, based on 100 parts by weight of the composition (sample (4) sample Chuan 201205599, contains 10.45 parts by weight of nano silver wire and respectively contains tritylene tetraoxide having a content of 〇~丨87 parts by weight. The rice particles, wherein the nano silver wire has an aspect ratio of 250 Å and the ferrotitanium oxide nanoparticles have a particle size of 3 Å nanometer. The sample 18 to the sample 21 after the completion of the mixing are respectively formed into a film having a thickness of 50 μm. In order to test the electromagnetic wave shielding efficiency value, the composition comprises a polymer material, and the polymer material comprises a polymethyl methacrylate aqueous solution. If the polymer material is 1 part by weight, the content of methyl mercapto acrylate is about It is 45 to 55 parts by weight, and water is about 55 to 45 parts by weight. Table 5 Sample 18 Sample 19 Sample 20 Sample 21 Particle size 30 nm of triiron tetroxide particles (parts by weight) 0 0.66 1.33 1.87 Length to diameter ratio 250 nm silver wire (parts by weight) 10.45 10.45 10.45 10.45 Polymethyl methacrylate (parts by weight) 44.775 44.445 44.11 43.84 Referring to Figure 2 and Figure 6, compared to the experiment of Figure 2, sample 18 to Sample 21 has a high content The nano silver wire, so the film made from sample 18 to sample 21 can have a lower surface resistivity. However, comparing the experimental results of Fig. 2 and Fig. 5, it can be found that the film made from sample 18 to sample 21 is not The electromagnetic shielding efficiency is significantly improved by having a lower surface resistivity. For example, compared with the sample 5 and the sample 21, the electromagnetic shielding efficiency of the film made with the sample 5 at a frequency of 4 to 16 GHz is about 36 to 48 dB. Between the sample 21 and the film 21 201205599, the electromagnetic wave efficiency is in the range of the lower Μ~3 7 sen in the same frequency range of 4. The electromagnetic shielding of the film made by the sample 18 to the sample 21 is compared. Efficiency, electromagnetic shielding efficiency is improved as the content of the ferroferric oxide nanoparticles increases, wherein i.87 parts by weight of triiron telecommunications is added compared to the film without the addition of ferroferric oxide nanoparticles. The film of rice particles generally has better electromagnetic shielding efficiency. Therefore, the particle size t of the tetra-nano-oxide nanoparticles is 1G 5G nanometer, and the aspect ratio of the nano-silver wire is increased by the nanowire in the thin film material. To 1 ().45 parts by weight The content of the ferroferric oxide particles may be between 0.4 and 2.6 parts by weight, between 6 and 24 parts by weight or between 1 and 2 parts by weight. Therefore, it can be known from FIG. 5 and FIG. When the addition of the silver wire reaches a certain level (refer to Fig. 8~1〇 again), increasing the amount of silver wire added has a limited increase in the electromagnetic shielding efficiency of the film material. Instead, it is by adding a specific concentration of nanometer. The particles caused an unexpected increase in the shielding rate of the film material at a high frequency. Experimental Example 6 The composition of Table 6 (sample 22 to sample 25) contained 1.14 parts by weight of the nanometer based on 100 parts by weight of the composition. The silver wire and the silver nanoparticles having a content of 0 to 1.99 parts by weight respectively; and the sample 26 contains only 7.65 parts by weight of the silver nanoparticle, but not including the nano silver wire, wherein the long diameter of the nano silver wire The ratio is 250' and the particle size of the silver nanoparticles is 1 〇〇 nanometer. Samples 22 through 26 after the completion of the mixing were separately formed into a film having a thickness of 5 μm to test the electromagnetic wave shielding efficiency value. The composition comprises a polymeric material, and the polymeric material 22 201205599 comprises an aqueous solution of methyl polymethyl propyl acrylate. The content of methyl methacrylate is about 45 to 55 parts by weight based on 100 parts by weight of the polymer material, and water is about 55 to 45 parts by weight. Table 6 Sample 22 Sample 23 Sample 24 Sample 25 Sample 26 Silver nanoparticle with a particle size of 100 nm (parts by weight) 0 0.66 1.33 1.99 7.65 Nano silver wire with a length to diameter ratio of 250 (parts by weight) 1.14 1.14 1.14 1.14 0 Methyl polymethyl methacrylate (parts by weight) 49.43 49.1 48.765 48.435 46.175 Referring to Figure 7, compared to the experiment of Figure 4, sample 23 to sample 26 have conductive silver nanoparticles "so sample 23 to The film made from sample 26 can have a lower surface resistivity. However, comparing the experimental results of Figs. 4 and 7, it can be found that the film produced by the sample 23 to the sample 26 does not have a better electromagnetic shielding efficiency due to the lower surface resistivity. For example, compare sample 12 with sample 24' except for the resonant mode (1« 〇1131^ mode) at frequency 4.801^. The electromagnetic shielding efficiency of sample 12 between the indicated bands is between 18 and 29. Between dB, and the electromagnetic shielding efficiency of sample 24 is between 19 and 3 〇 dB'. There is no difference between the two. From the above experimental results, it is understood that there is no significant difference in the electromagnetic shielding efficiency between the film in which the silver nanoparticle is added and the film in which the magnetic conductive particles are added to the film. Therefore, when the silver nanoparticle particle size is 80 to 12 〇 太 ' '...,,: τ, rice silver wire long-term ratio of 200 to 300, the silver nanoparticle content may be between ~ 2 parts by weight Or between 0.7 and 2 parts by weight. 5 In addition, 'Comparing the electromagnetic shielding efficiency of the film made from sample 22 to sample 25, the electromagnetic shielding efficiency of the wire in the film is better than that of the film only, and the electromagnetic shielding efficiency is the same as the silver nanometer. When the content of the particles is increased to improve 'and the magnetic particles are changed to conductive particles, it seems to have a certain electromagnetic wave avoidance rate. Figure 12 shows the test results of the electromagnetic shielding efficiency of the two films. The two films are made of bisphenol octa epoxy resin BE188 (source: ChangChunpiastics C〇,

Ltd), Taiwan) is prepared for the carrier. The two film systems are respectively made of a two-component compound, wherein the two components comprise a nanowire having a length to diameter ratio of 8 〇 and a concentration of 2 〇 6 parts by weight, and a particle diameter of 5 〇 nm and a concentration of respectively 〇 Parts by weight and 〇, 65 parts by weight of nanoparticles. After the experiment, it was found that even if the material of the carrier was changed from acrylic resin to bisphen A 1 e type eP〇Xy, BE188 (source: Chang chun Plastics Co., Ltd), Taiwan) After adding nanoparticles to the carrier, the electromagnetic shielding efficiency of the film made from it can still be improved. Therefore, the addition of a specific proportion of nanoparticles causes an unexpected effect and is not affected by the use of different high molecular materials. The film made of the composition having a nanowire and a nanoparticle has an excellent electromagnetic wave shielding effect. Table 7 24 201205599 Product Components Main Components EMI Effect (Parts by Weight) Sample 4 Nanowire and Nanoparticles <2% >40db Product B (EMR-PROTECTION) YShield Graphite or Conductive Particles >40% <30db Product C (Product ECOS EMR - Graphite or Conductive Particles <30db ELF RADIATION SHIELDING WALLPAINT) > 40% (solid content) Eco Organic Paints Company can be seen from the results of Table 7 and Figure 13, made with Sample 4 The electromagnetic wave shielding material of the nano structure has better EMI protection effect than the film made by the conventional products (B and C) of the conventional metal circular particles. Moreover, in the composition A of the present disclosure, only a low content of the nano material is required to have a higher electromagnetic wave shielding value than a commercially available product having a high content of particles. Referring to FIG. 14, the present disclosure further discloses an electromagnetic shielding device. The electromagnetic shielding device 10 comprises a body U and a film 12, wherein the body "has a surface 13 and a film 12 is formed on the surface 13 to provide electromagnetic wave shielding. The thin film 12 may comprise a plurality of nanowires and a plurality of wires a nanoparticle, a plurality of nanowires and a plurality of nanoparticles are uniformly dispersed in the film 12 and mixed with each other, wherein the nanowires are intercalated by weight of the film 12 Parts to 95 parts by weight; the nano particles are between 重量5 parts by weight and 6 〇 weight of the film according to the film 12 25 201205599. The body 11 can be any film 12 to be coated to shield electromagnetic waves. For example, the body 11 may be a wire, a plate, a polymer film, a casing, etc. Referring to Figure 15, the present disclosure further discloses an antistatic device 2 . The antistatic device 20 includes a substrate 21 and a film 22 . The substrate 21 has a surface 23, and the film 22 is formed on the surface 23 to provide electromagnetic wave shielding. The ruthenium film 22 may comprise a plurality of nanowires and a plurality of nanoparticles. The plurality of nanowires The plurality of nano particles are uniformly dispersed in the film 22 and mixed with each other, wherein the nano metal wires are 1 part by weight to 1 part by weight based on the total weight of the film 22; The nano particles account for 〇. 5 parts by weight to 60 parts by weight based on the total weight of the film 22. In combination with the above, an appropriate amount of magnetic conductive or metal nanoparticles is added to the composition containing the nano metal wire to improve the The electromagnetic shielding efficiency of the film made by the composition. According to the results of the foregoing embodiments, the content of the nanowire metal wire may be from 1 part by weight to 1 part by weight, and between 1 part by weight. To the weight part by weight or between 丨 parts by weight to 3 parts by weight. Further, the content of the magnetic conductive or metallic nanoparticles may be from 1 part by weight to 6 parts by weight, and from 0.1 part by weight to 10 parts by weight, Between 0.05 parts by weight and 1 part by weight or between 0.5 parts by weight and 2 parts by weight. In addition, a large amount of magnetic conductive or metallic nanoparticles are added to the composition containing the nano metal wire, and the electromagnetic shielding efficiency is not obvious. Lifting. In addition, in the film The addition of the insulating magnetically permeable nanoparticle increases the electromagnetic shielding efficiency of the nanowire or the metal nanoparticle by increasing the conductivity. 26 201205599 FIG. 16 shows an electromagnetic system according to an embodiment of the present disclosure. The electromagnetic shielding structure 30 comprises a target 31 and a film 32. The method for preparing the electromagnetic shielding structure 30 comprises the following steps: providing the target 31; coating or spraying, etc., in the target 3 1 Forming a film 32 thereon; and heating the film 32 to a temperature by illumination or an oven, wherein the temperature is between 50 degrees Celsius and 250 degrees Celsius. The composition of the film 3 2 is as listed in Table 8. The composition is configured For coating or spraying. The composition may comprise nano silver wires and polymeric materials. In some embodiments, the composition further comprises nanoparticle. The polymer material may comprise p聚lyUrethane and water, wherein the content of the polyamine phthalate is about 45 to 55 parts by weight, and the water is about 5 parts by weight of the polymer material. 5 to 4 parts by weight. Table 8 ----- Sample 27 Sample 28 Sample 29 Sample 30 Nano silver wire with a length to diameter ratio of 15 0 (parts by weight) ~—--- 2.43 3.49 2.1 1.09 Particle size 80 Nai Te tetraoxide particles ---~~~-- 1.45 2.18 ---- 0.55 3.69 Polyurethane (parts by weight) --- 48.06 47.165 L---- 48.675 47.61 is shown in an embodiment of the invention to have a weight of 2 43 The amount of the electromagnetic wave shielding efficiency value of the frequency of 0 to 1800 μη^β1 is shown in Fig. 18, which is shown in Fig. 18, which is produced by a mixture of silver nene and 1.4 parts by weight of ferroferric oxide particles. In one embodiment, a film prepared by using a mixed material of 2 43 parts by weight of a silver "iron wire" of 1.45 parts by weight of a spear, at a frequency of 1 to 18 GHz, is measured. The sample 27 is coated on a target, and then heated by a knife knives at 8 degrees Celsius to form a film having a thickness of 50 μm. Thereafter, the electromagnetic wave shielding efficiency value of the thin ridge is measured. From Figs. 17 and 18 The measurement results show that the film is heated at 80 ° C for 5 minutes, at a frequency between 1 and 18 〇〇斛 11 Between 2, the electromagnetic wave shielding efficiency is significantly improved; and in the high frequency range, the electromagnetic wave shielding efficiency value can be higher than 4 〇 dB. Figure 19 shows that there are 2.4 3 parts by weight of silver nanowires and 丨 4 5 A graph showing the relationship between the electromagnetic shielding efficiency value and the heating time of a film made of a mixed material of triiron tetroxide particles. The sample 27 is coated on a target and heated at 80 degrees Celsius for 5 minutes to produce A film having a thickness of 3 μm is produced. The film is baked at a temperature of 150 ° C for different heating times. Then, the electromagnetic wave shielding efficiency value of the film baked at different heating times is measured, and the result shown in FIG. 19 can be obtained. From the results shown in Figure 19, it can be seen that when the film is heated for more than 1 hour, the electromagnetic wave shielding efficiency value can be increased by more than 丨〇 dB. Right at 150 degrees Celsius, after 72 hours of baking, the electromagnetic wave shielding efficiency value can be reached more. 40 dB or more. Fig. 20 shows a film made of a mixed material of 2.43 parts by weight of silver nanowires and 1.45 parts by weight of triiron tetroxide particles, with electromagnetic wave shielding efficiency values and heating temperatures The sample 27 is coated on a target and heated at 80 degrees Celsius for 5 minutes to produce a thin film of 20 055μm thickness of 201205599. The film is then fixed for 1 hour at different heating temperatures. Then, the electromagnetic wave shielding efficiency value of the film heated at different temperatures is measured, and the result shown in Fig. 20 can be obtained. From the results shown in Fig. 20, it can be known that the electromagnetic shielding effectiveness value of the film varies with the heating temperature. Increase and increase. Therefore, the film can be adjusted to the heating temperature to obtain the desired electromagnetic wave shielding efficiency value. Further, the film heated at the temperature shown in Fig. 20 can be tested by the wrong pen hardness B and the adhesion degree 4B. Figure 21 is a view showing a film made of a mixed material of 349 parts by weight of silver nanowires and 2.8 parts by weight of ferroferric oxide particles in an embodiment of the present invention, and electromagnetic waves at a frequency of 0 to 1800 MHz. A measure of the shading efficiency value. Figure 22 is a view showing an electromagnetic wave shielding efficiency value at a frequency of 1 to 18 GHz in a film made of a mixed material of 349 parts by weight of silver nanowires and 2.18 parts by weight of ferroferric oxide particles in an embodiment of the present invention. The measurement chart. The sample 28 was applied to a target and then heated at 8 degrees Celsius for 5 minutes to form a film having a thickness of 80 μm. Thereafter, the electromagnetic wave shielding efficiency value of the film was measured. From the measurement results of Figs. 21 and 22, it can be seen that the electromagnetic wave shielding efficiency value of the film after heating at 8 degrees Celsius for 5 minutes can be higher than 4 〇 dB. Further, since the ferroferric oxide particles and the silver nanowire are mixed, the film can generate multiple scattering and absorbing effects, so that better electromagnetic wave shielding efficiency can be obtained. 23 shows a film made of a mixed material of 21 parts by weight of a silver nereline and a 0.55 weight-damped triiron tetroxide particle in an embodiment of the present invention, which is heated at different heating times. After heating the temperature, it measures the electromagnetic wave shielding efficiency value between 0 and 1800 MHz. The coated sample 29 was heated at a temperature of 80 ° C for 5 minutes at a target of 29 201205599, and then made into a thickness of 7 μm 2 thin. The electromagnetic wave shielding efficiency of the film can be measured as shown in Fig. 23. If the film is placed in a box, it is fired at 15 degrees Celsius, 24 hours, then fired, and then the electromagnetic wave shielding efficiency is tested, and the result shown in Fig. 23 can be obtained. Comparing the results shown in Fig. 23, it can be seen that if the film is baked for another 24 hours and 150 degrees Celsius, the electromagnetic wave shielding efficiency value can be increased by 10 dB. Figure 24 is a view showing a film produced by using a mixed material of 1.09 parts by weight of silver nanoparticles and 3.69 parts by weight of triiron tetroxide particles in one embodiment of the present invention, after a different heating time, at a frequency of 1〇〇. Measure the electromagnetic wave shielding efficiency value between ~18〇〇MHz. The coated sample was placed on a target, and then heated at 8 ° C for 5 minutes to make a thickness of 3 μm, and then the film was heated at different temperatures for 1 hour. Then, the electromagnetic wave shielding efficiency of the film was measured, and the results are shown in Fig. 24. From the results shown in Fig. 24, it can be seen that heating above 8 degrees Celsius can increase the electromagnetic wave shielding efficiency of the film by more than 4 〇 dB. The electromagnetic shielding structure 3 shown in Fig. 16 may include a target 31, a film 32, and an adhesive layer 33. The film 32 is disposed on the object 31, and the adhesive layer 33 is disposed on the film 32. In one embodiment, the adhesive layer 33 comprises a pressure sensitive adhesive. In addition, in another embodiment, the electromagnetic shielding structure 30 may further include at least one second film (not shown), wherein the second film overlaps the film 32 and may be located between the adhesive layer 33 and the film 32. And the film 32 and the second film may have nano particles and a nano metal wire, respectively. Figure 25 shows the power obtained by measuring the hard disk of a film without electromagnetic interference. 30 201205599 The relationship between magnetic intensity and frequency. Fig. 26 is a graph showing the relationship between the electromagnetic field strength and the frequency obtained by measuring a hard disk having a film (sample 31) having electromagnetic interference resistance. The result of Figure 25 is that a hard disk is produced according to the EU Electromagnetic Compatibility Directive (EU-EMC Directive (2004/108/EC) ΕΝ 55022 class Β) test, which is at frequencies 377, 486 and 593 MHz (number 4, 5, 6 marked) exceeds the standard. The sample 31 was coated on the hard disk to form a film having a thickness of less than 50 μm. After the film was dried, the hard disk was found to comply with the EU electromagnetic compatibility guidelines in the frequency range of 3 〇 mHz to 1.8 GHz. Therefore, the film produced by the sample of the present disclosure can reduce the generation of electromagnetic interference. The polymer materials used in the samples 31-32 contained an aqueous polyurethane solution (containing 45 to 55 parts by weight of polyurethane and 55 to 45 parts by weight of water). Table 9 Sample 31 Sample 32 Nano silver wire (length to diameter ratio 150) 2.61 parts by weight 2.71 parts by weight of ferroferric oxide particles (particle diameter 80 nm) 0.81 parts by weight 0.81 parts by weight aqueous polyurethane solution (parts by weight) 5.07 parts by weight *-- — 5.71 parts by weight surface resistivity (Ω/sqr) 7.28 ---- 4.36 Viscosity (cps) 289.74 ----- 3765.83 Compliance with EU-EMC Directive (20.04/108/EC) before coating samples ΕΝ 55022 class ΒTest standard 3 bands have not passed the standard (Figure 25) ------- 15 bands have not passed the standard level (Figure 27) 17 bands have not passed the standard vertical direction (Figure 29) ----- 31 201205599 Compliance with coated products after coating samples: Hard disk coated products: Video recorder EU-EMC Directive (2004/108/EC) ΕΝ 55022 Coating thickness: 50 μm Coating thickness: 30 μm class Β Test standard completely Compliance (Fig. 26) Fully compliant (Fig. 28 level direction) Fully compliant (Fig. 30 vertical direction) Fig. 27 shows a video recorder without a film with electromagnetic interference resistance, measured in the horizontal direction, and the obtained electromagnetic field strength Diagram of the relationship with frequency. Fig. 29 is a view showing the relationship between the electromagnetic field strength and the frequency of the recording and reproducing machine which does not have an anti-electromagnetic interference film, which is measured in the vertical direction. Fig. 28 is a view showing the relationship between the intensity of the electromagnetic field and the frequency obtained by measuring the recording and reproducing machine of the film having the electromagnetic interference resistance (sample 32) in the horizontal direction. Figure 30 is a graph showing the relationship between the intensity of the electromagnetic field and the frequency of the VCR with the electromagnetic interference resistant film (Sample 32) measured in the vertical direction. According to the EU Electromagnetic Compatibility Guidelines, the electromagnetic wave interference in the horizontal and vertical directions of the video recorders without anti-electromagnetic interference film can be found to be inconsistent with the standard at 15 frequencies and 17 frequencies. On the other hand, an anti-electromagnetic interference film (thickness less than 50 μm) was formed on the recording and reproducing machine with the sample 32. After the film was dried, the video recorder was found to comply with the EU electromagnetic compatibility guidelines. Therefore, the film produced by the present disclosure 32 has a large bandwidth electromagnetic shielding effect. The shielding rate of conventional electromagnetic waves is usually positively correlated with the conductivity. However, from the experimental results of the samples 31 and 32, it is known that when the conductive metal material is added to a certain extent, the influence on the shielding rate is limited. Samples 31 and 32 contain a polymer material, which may include polyamine phthalate 32 201205599 (Polyurethane) and water, wherein the content of the polyurethane is about 45 parts by weight of the polymer material. 55 parts by weight, and water is about 55 to 45 parts by weight. Further, the present disclosure discloses that heat treatment of an anti-electromagnetic interference film having a nano material can effectively improve the electromagnetic wave shielding efficiency of the film. Therefore, the thickness of the film to be used can be reduced without reducing the electromagnetic shielding effect. The technical content and technical features of the present disclosure have been disclosed above, but those skilled in the art may still make various substitutions and modifications without departing from the spirit and scope of the disclosure. Therefore, the scope of the present disclosure is not to be construed as limited by the scope of BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are schematic diagrams showing the relationship between the electromagnetic wave shielding efficiency value and the frequency of a film having different content of ferroferric oxide nanoparticles according to an embodiment of the present invention; FIG. 3 shows an embodiment of the present disclosure. A schematic diagram of the relationship between the electromagnetic wave shielding efficiency values of a plurality of films and the frequency, wherein the thin ruthenium comprises a nano-silver wire having an aspect ratio and a different content of ferrotitanium tetraoxide nanoparticles; FIG. 4 shows an implementation of the disclosure. A schematic diagram of the relationship between the electromagnetic wave shielding efficiency values and the frequencies of a plurality of thin rafts, wherein the thin lanthanum is composed of a composition comprising 4 parts by weight of nano silver wire and a composition containing different contents of ferrotitanium tetraoxide particles. 5 and FIG. 6 are schematic diagrams showing the relationship between the electromagnetic wave shielding efficiency value and the frequency of the high-nano silver wire content of the 2012 20129999 film according to an embodiment of the present disclosure; FIG. 7 shows the disclosure - the embodiment is too " FIG. 8 shows a relationship between the electromagnetic wave shielding efficiency value of the wood silver wire and the silver nano particle film versus frequency; FIG. 8 shows the appearance of an embodiment of the present disclosure. Fig. 10 is a diagram showing the relationship between the electromagnetic wave shielding efficiency value of the material and the surface resistivity under the condition of using a nano silver wire with a length to diameter ratio of 2 ;; - Schematic diagram of the relationship between electromagnetic wave shielding efficiency values versus frequency for a plurality of films of the embodiment, wherein the films are made of a composition comprising 114, 3 and 10.45 parts by weight of nano silver wire; Figure 11 shows different lengths The ratio of the electromagnetic wave shielding efficiency value to the volume percentage of the material of the diameter ratio; FIG. 12 shows that the composition of the nano-particles of different concentrations is used as the carrier and the electromagnetic wave shielding efficiency value is frequency-dependent. FIG. 13 is a schematic diagram showing the relationship between the electromagnetic shielding effectiveness value of the composition of the present disclosure and the conventional product; FIG. 14 is a schematic view showing an electromagnetic shielding device according to an embodiment of the present disclosure; FIG. 16 is a schematic view showing an electromagnetic shielding structure according to an embodiment of the present disclosure. FIG. 17 is not in the embodiment of the present invention. A measurement chart of electromagnetic shielding effectiveness values of a film prepared by mixing a mixture of 43 parts by weight of a silver wire and 1.7 parts by weight of a ferroferric oxide particle at a frequency of 0 to 1800 MHz; FIG. 18 is shown in the present invention. In one embodiment, a thin 34 201205599 film made of a mixed material of 2 43 parts by weight of a silver wire and 1.4 5 parts by weight of a ferroferric oxide particle is used to measure the electromagnetic wave shielding efficiency value at a frequency of 1 to 18 GHz. Figure 19 is a graph showing the relationship between the electromagnetic wave shielding efficiency value and the heating time of a film made of a mixed material of 2.43 parts by weight of silver wire and 145 parts by weight of ferroferric oxide particles; Figure 20 shows that with a film of 2.43 A graph of the relationship between the electromagnetic wave shielding efficiency value and the heating temperature of a film made of a mixture of a weight ratio of a silver wire and a 45 parts by weight of a ferroferric oxide particle; FIG. 21 shows an embodiment of the present invention. 3. A measurement of electromagnetic shielding effectiveness values of a film made of a mixture of hook-by-part silver nanoparticles and 2.18 parts by weight of ferroferric oxide particles; the frequency is shown in Fig. 22; In one embodiment, a film prepared by using a mixture of 349 parts by weight of silver nanoparticles and 2.18 parts by weight of ferroferric oxide particles, and an electromagnetic wave shielding efficiency value at a frequency of 1 to 18 GHz; 23 shows a film made of a mixed material of 2.1 parts by weight of silver nanowires and 0.55 parts by weight of ferroferric oxide particles in an embodiment of the invention, after different heating time and heating temperature, at a frequency FIG. 24 shows a mixture of 1.09 parts by weight of silver nanoparticles and 3.6 parts by weight of triiron tetroxide particles in an embodiment of the invention. FIG. The film produced by the material has a measurement of the electromagnetic wave shielding efficiency value at a frequency of 1 〇〇 18 〇〇 MHz at different heating temperatures; Figure 25 shows a hard disk measuring the film without electromagnetic interference resistance. Figure 2 shows the relationship between the electromagnetic strength and the frequency obtained by measuring the hard disk with anti-electromagnetic interference film. 201205599 Field intensity vs. frequency; Figure 27 shows that there is no anti-electromagnetic interference The recording machine is measured upwards, and the relationship between the obtained electromagnetic field strength and the frequency is shown in Fig. 28. The hard disk with the anti-electromagnetic interference film is measured in the horizontal direction, and the obtained electromagnetic field strength and frequency are obtained. Relationship diagram j Figure 29 shows a recording and playback machine that does not have an anti-electromagnetic interference film, which is measured in the vertical direction, and the obtained electromagnetic field strength and frequency are shown; and Figure 3 shows the anti-electromagnetic interference. The relationship between the strength and frequency of the electromagnetic field obtained by "measuring" in the vertical direction of the hard disk of the film. [Main component symbol description] 10 Electromagnetic shielding device 20 Antistatic device 30 Electromagnetic shielding structure 11 Body 12 Film 13 Surface 21 Substrate 22 Film 23 Surface 36 201205599 31 32 33 Target Film Adhesive layer 37

Claims (1)

201205599 VII. Patent Application Range: 1. A composition for electromagnetic shielding comprising: a carrier in which a plurality of nanowires are interspersed in the carrier, wherein the composition is 100 parts by weight The nano metal wire is between 1 part by weight and 95 parts by weight; and the plurality of nano particles are dispersed in the carrier, wherein the nano particles are between 0.1 parts by weight and 60 parts by weight of the composition. Parts by weight. 2. The composition according to claim 1, wherein the nanoparticles are metal or metal oxides and the nanoparticles are between 0.5 parts by weight and 20 parts by weight. 3. The composition of claim 1 wherein the nanoparticles are gold, silver, copper, indium, palladium, aluminum, iron, cobalt, nickel or a mixture, alloy or oxide of the foregoing. The composition according to claim 2, wherein the residual rice particles are a mixture of nano silver particles, nano-ferric oxide particles or the aforementioned particles. 5. The composition of claim 1 wherein the glutinous rice wires are between 1 part and 11 parts by weight. 6. The composition of claim 1, wherein the plurality of metal wires have an aspect ratio greater than 10. 7. The composition of claim 1 wherein the plurality of particles have a particle size less than 1000 nm. 8. The composition according to claim 1, wherein the ratio of the plurality of metal wires to the nano particles is greater than 0.1. The composition of claim 1, wherein the nanowire is gold, silver, copper, indium, palladium, aluminum, iron, cobalt, nickel or a mixture, alloy or oxide of the foregoing metals. 10. The composition according to claim 1, wherein the nanowire is a gold-coated silver nanowire, a silver-coated gold nanowire, a gold-coated steel nanowire, and a copper-coated nylon nanowire. , silver coated copper nanowire, copper coated silver nanowire or a combination of the foregoing. 11. The composition according to claim 1, wherein the nanoparticle is a gold-coated silver nanoparticle, a silver-coated gold nanoparticle, a gold-coated copper nanoparticle, a steel-coated gold nanoparticle, Silver coated copper nanoparticles, copper coated silver nanoparticles or a combination of the foregoing. 12. A composition for electromagnetic shielding, comprising: a carrier; a plurality of nanowires of metal wires dispersed in the carrier, the nanometer metal wires having an aspect ratio greater than 10, the nanowires a mixture, alloy or oxide of gold, silver, copper, ruthenium, palladium, aluminum, iron, cobalt, nickel or the foregoing metals, wherein the nanowires are between 1 part by weight based on 100 parts by weight of the composition Up to 95 parts by weight; and a plurality of nano-particles dispersed in the carrier, the nano-particles being less than 1000 nm. The nano-particles are gold, silver, copper, indium, palladium, aluminum, iron, recorded, Nickel or a mixture, alloy or oxide of the foregoing metals, wherein the nanoparticles are between 0.1 parts by weight and 60 parts by weight. 13. The composition according to claim 12, wherein the nano metal wires are between 1 part by weight and 11 parts by weight, and the nano particles are between 〇5 parts by weight and 10 39 201205599. The composition for electromagnetic shielding has an electromagnetic wave shielding efficiency value greater than 丨〇 dB. 14. The composition of claim 12, wherein the nano metal wires have a ratio of 20 to 500; the nanoparticles have a particle size of 丨〇 to 丨〇〇〇 nanometer; The rice metal wire is between 1 part by weight and 3 parts by weight, wherein the nano particles account for 〇·5 parts by weight to 2 parts by weight of the total weight of the composition, and the composition for electromagnetic shielding has greater than 1 〇. The electromagnetic wave shielding efficiency value of the crime. 15. An electromagnetic shielding device comprising: a body having a surface; and a film formed on the surface of the body to shield electromagnetic waves, the film comprising: a plurality of nanowires 'distributed in the film, wherein The nano metal wires are between i parts by weight and 95 parts by weight based on 100 parts by weight of the film; and a plurality of nano particles are dispersed in the film, wherein the film is 100 parts by weight, The nanoparticles are between 1 part by weight and 6 parts by weight. 16. The electromagnetic shielding device of claim 15, wherein the nanoparticles are conductive particles, magnetically permeable particles, insulated magnetically permeable particles, or a combination thereof, and the nanoparticles are between 0.5 parts by weight and 2 parts by weight. Share. The electromagnetic shielding device according to claim 15, wherein the nano metal wires are between 1 part by weight and 11 parts by weight. 18. An antistatic device comprising: 40 201205599 a substrate; and a film formed on the substrate, the film comprising: a plurality of nanowires, dispersed in the film, the towel & The nano metal wires are between 1 part by weight and 95 parts by weight, and a plurality of nano particles are dispersed in the film, wherein the nano particles are between 100 parts by weight of the film. 〇. 丨 by weight to 6 parts by weight. 19. The antistatic device according to claim 18, wherein the nano particles are conductive particles, magnetically permeable particles, insulated magnetically permeable particles or a combination thereof, and the nano particles are between 重量. 5 parts by weight to 2 parts by weight. 20. The antistatic device of claim 18, wherein the nanowires are between 1 and 11 parts by weight. a method for preparing an electromagnetic shielding structure, comprising the steps of: providing a target; providing a mixed material, the mixed material comprising a plurality of nanowires, wherein the nanowires have an aspect ratio greater than 5 Å; Using the mixed material, forming a first film on one surface of the target; and heating the first film to a temperature between 5 degrees Celsius and Celsius (four degrees). 0. According to claim 2 The method for preparing the nano metal wire is gold, silver, copper, indium, palladium aluminum, iron, cobalt, nickel or a mixture, alloy or oxide of the foregoing metals. The method of claim 21, wherein the mixed material comprises a plurality of nano particles, wherein the nano particles are silver particles, triiron tetroxide particles or a mixture thereof . The preparation method according to claim 23, wherein the nanoparticles comprise 0.1 to 5 parts by weight based on the total weight of the first film. The preparation method according to claim 23, wherein the (four) nanoparticle is smaller than the method of the second film, wherein the second film comprises the film and the second film comprising the plurality of films according to claim 21 The second film of nanometers is placed one on top of the other. The step between -5 ° C and 25 ° C - temperature allows the film to increase the shielding rate between 4 G and 16 G. - 42