CN117858484A - Electromagnetic wave shielding material with heat preservation function - Google Patents
Electromagnetic wave shielding material with heat preservation function Download PDFInfo
- Publication number
- CN117858484A CN117858484A CN202410062310.XA CN202410062310A CN117858484A CN 117858484 A CN117858484 A CN 117858484A CN 202410062310 A CN202410062310 A CN 202410062310A CN 117858484 A CN117858484 A CN 117858484A
- Authority
- CN
- China
- Prior art keywords
- water
- electromagnetic wave
- shielding material
- heat preservation
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 27
- 238000004321 preservation Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 239000003292 glue Substances 0.000 claims abstract 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000084 colloidal system Substances 0.000 claims description 6
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 4
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 4
- 235000011151 potassium sulphates Nutrition 0.000 claims description 4
- 235000010344 sodium nitrate Nutrition 0.000 claims description 4
- 239000004317 sodium nitrate Substances 0.000 claims description 4
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 claims description 4
- 229940039790 sodium oxalate Drugs 0.000 claims description 4
- 229920000161 Locust bean gum Polymers 0.000 claims description 3
- 239000000711 locust bean gum Substances 0.000 claims description 3
- 235000010420 locust bean gum Nutrition 0.000 claims description 3
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 2
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000004520 water soluble gel Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses an electromagnetic wave shielding material with a heat preservation function, which comprises water, water-soluble salt and water-soluble glue, wherein the electromagnetic wave shielding function is realized by utilizing the conductivity of saline solution in which the water-soluble salt is partially dissolved in the water; the heat preservation function is realized by utilizing the heat absorbed by salt when the salt is dissolved in water and the heat released when the water is separated out. In preparing such a shielding material, a water-soluble gel and a part of salt are dissolved in water to form a uniform gel. The use can be made into continuous film or blanket. When used as an electromagnetic wave shield, the composition can provide an appropriate temperature environment for electronic equipment. The electromagnetic wave shielding material with the heat preservation function has the advantages of low price, simple manufacture, convenient use and the like.
Description
Technical Field
The invention belongs to the field of electromagnetic shielding materials, and particularly relates to an electromagnetic shielding material with a heat preservation function.
Background
A large number of applications of electronic devices such as communication, detection, computers and the like can generate electromagnetic radiation, electromagnetic interference among the electronic devices is caused, and the human health can be adversely affected when the power is high.
Electromagnetic shielding is a common approach used by people to mitigate or eliminate the adverse effects of such electronic devices. The electromagnetic shielding materials commonly used at present mainly comprise conductive or magnetic materials such as metal, ferromagnetic materials, graphite and the like. These materials, while having good electromagnetic wave shielding properties, do not have the ability to regulate ambient temperature. When the electronic equipment is in the shielding body made of the shielding materials, heat generated by the electronic equipment during operation can be accumulated in the shielding body due to limited space, so that the temperature in the shielding body is increased, and the performance of the precise electronic equipment is affected; in cold regions, when some precision electronic devices stop working for a period of time, restarting often requires preheating for a period of time to work stably.
Disclosure of Invention
The invention aims to provide an electromagnetic wave shielding material with a heat preservation function, which can keep the temperature in an electromagnetic wave shielding body in a proper range, provide a relatively stable working environment for electronic equipment and keep the performance of the precise electronic equipment stable.
The technical scheme for realizing the aim of the invention is as follows:
an electromagnetic wave shielding material with heat insulating function is prepared from water, water-soluble organic-inorganic salt and water-soluble adhesive. In preparation, water-soluble gum and partial salt are dissolved in water to form colloid.
When in use, the continuous conductive film with a certain thickness can be formed on templates made of glass and the like by spraying and knife coating; the continuous conductive film with the substrate can also be formed by directly spraying and knife coating on the substrates such as paper, plastic, metal film, cloth and the like; it can also be directly sealed with plastic material to make continuous blanket.
The electromagnetic wave shielding material of the invention is characterized in that partial salt is dissolved in water to be dissociated into ions, so that the aqueous solution of the salt has conductivity, and when electromagnetic waves pass, the colloid of the aqueous solution of the salt is stimulated to move, so that the electromagnetic waves are attenuated. The solubility of organic-inorganic salts in water increases with increasing temperature, except for very few, with concomitant absorption of large amounts of heat. When the temperature in the electromagnetic shield body increases, as the solubility of the salt in water increases, part of undissolved salt is dissolved successively, absorbing a great amount of heat, so that the temperature in the electromagnetic shield body decreases; in a cold environment, the temperature in the electromagnetic shielding body is reduced, the solubility of salt in water is correspondingly reduced, and part of dissolved salt is sequentially separated out and emits a large amount of heat, so that the temperature in the electromagnetic shielding body is increased. The temperature change in the electromagnetic shielding body is balanced through the change of the solubility of the salt in water along with the temperature change, so that the relative stability of the temperature in the electromagnetic shielding body is maintained, and a proper working environment is provided for precise electronic equipment.
Compared with the prior art, the electromagnetic wave shielding material with the heat preservation function is simple to prepare and low in cost. When the electromagnetic shielding device is used, the change of the temperature in the electromagnetic shielding body can be balanced through the change of the solubility of salt in water along with the temperature, the relative stability of the temperature in the electromagnetic shielding body is maintained, and a proper working environment is provided for precise electronic equipment.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1: weighing the following components in parts by weight: 100 parts of water, 110 parts of sodium nitrate and 5 parts of hydroxypropyl cellulose, and 100 parts of sodium nitrate were dissolved in 100 parts of water at 200C, and then the remaining 10 parts of sodium nitrate was added with stirring to form a uniform colloid. The gel was then knife coated onto a glass template to form a uniform 8mm thick continuous film. The membrane is used as shielding material, and is assembled into an internal volume of 0.2m 3 And the cuboid shielding body is used for placing electronic equipment with the power of 150 watts into the electromagnetic shielding body, wherein the initial temperature in the shielding body is 16.8 ℃, and the temperature of the shielding chamber is increased to 22.2 ℃ after the electronic equipment works for 2 hours.
Example 2: weighing the following components in parts by weight: 100 parts of water, 26 parts of sodium oxalate and 4 parts of polyvinylpyrrolidone, and 15 parts of sodium oxalate were dissolved in 100 parts of water at 18 ℃, and then the remaining 11 parts of sodium oxalate were added with stirring to form a uniform colloid. The gel was then sprayed onto a cloth to form a uniform 5mm thick continuous film. The membrane is used as shielding material, and is assembled into an internal volume of 0.3m 3 And the cuboid shielding body is used for placing the electronic equipment with the power of 200 watts into the electromagnetic shielding body, wherein the initial temperature in the shielding body is 8 ℃, and the temperature in the shielding chamber rises to 25.6 ℃ after the electronic equipment works for 3 hours. Then stopping the operation of the electronic equipment, moving the shielding body with the electronic equipment therein to an environment with the temperature of minus 6 ℃, standing for 3 hours, and then keeping the shielding body at the inner temperatureThe temperature is still kept at 11.2 ℃, the electronic equipment is started, the operation is normal, and the performance is stable.
Example 3: weighing the following components in parts by weight: 100 parts of water, 28 parts of potassium sulfate and 3 parts of locust bean gum, the locust bean gum and 16 parts of potassium sulfate are dissolved in 100 parts of water at 20 ℃, and then the remaining 12 parts of potassium sulfate are added under stirring to form a uniform colloid. The gel was then sealed in a plastic bag and flattened to form a 20mm blanket. The blanket is used as shielding material and assembled into an internal volume of 0.2m 3 And the cuboid shielding body is used for placing the electronic equipment with the power of 150 watts into the electromagnetic shielding body, wherein the initial temperature in the shielding body is 20.3 ℃, and the temperature in the shielding body rises to 31.6 ℃ after the electronic equipment works for 4 hours.
Claims (5)
1. An electromagnetic wave shielding material with heat preservation function, which is characterized in that: including water, water-soluble gums and water-soluble salts; the heat preservation function is realized by utilizing the heat absorption when the water-soluble salt is dissolved in water and the heat release when the water-soluble salt is separated out.
2. The electromagnetic wave shielding material with a heat preservation function according to claim 1, wherein: the electromagnetic wave shielding material with the heat preservation function comprises 100 parts of water, 110 parts of sodium nitrate and 5 parts of hydroxypropyl cellulose.
3. The electromagnetic wave shielding material with a heat preservation function according to claim 1, wherein: the electromagnetic wave shielding material with the heat preservation function comprises 100 parts of water, 26 parts of sodium oxalate and 4 parts of polyvinylpyrrolidone.
4. The electromagnetic wave shielding material with a heat preservation function according to claim 1, wherein: the electromagnetic wave shielding material with the heat preservation function is prepared from the following components in parts by weight: 100 parts of water, 28 parts of potassium sulfate and 3 parts of locust bean gum at 20 ℃.
5. An electromagnetic wave shielding material with heat preservation function according to claim 1, characterized in that: when the electromagnetic shielding material is prepared, water-soluble glue and part of organic and inorganic salts are dissolved in water to form uniform colloid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410062310.XA CN117858484A (en) | 2024-01-16 | 2024-01-16 | Electromagnetic wave shielding material with heat preservation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410062310.XA CN117858484A (en) | 2024-01-16 | 2024-01-16 | Electromagnetic wave shielding material with heat preservation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117858484A true CN117858484A (en) | 2024-04-09 |
Family
ID=90536626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410062310.XA Pending CN117858484A (en) | 2024-01-16 | 2024-01-16 | Electromagnetic wave shielding material with heat preservation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117858484A (en) |
-
2024
- 2024-01-16 CN CN202410062310.XA patent/CN117858484A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2559969A (en) | Method of applying a masking composition to a glass base | |
| BRPI0610168A2 (en) | water-soluble preflow | |
| ES8403723A1 (en) | A process for producing an insulin preparation. | |
| CN117858484A (en) | Electromagnetic wave shielding material with heat preservation function | |
| CN111408713A (en) | Preparation method of nickel-coated graphite composite powder material with high coating rate | |
| JP2002105662A (en) | Surface treating agent and surface treating method for copper and copper alloy | |
| CN106750284B (en) | Foamed metal doped polyaniline electromagnetic shielding material and preparation method thereof | |
| CN103862199A (en) | Scaling powder special for photovoltaic solder strip | |
| JP2001262357A (en) | Composition for deposition of rare earth oxide film | |
| GB566718A (en) | Improvements in or relating to the silvering of non-metallic surfaces | |
| JPH01225776A (en) | Silver-coated spherical phenolic resin powder | |
| US5268024A (en) | Formation of inorganic conductive coatings on substrates | |
| ES8107331A1 (en) | Use of hydrazine compounds as corrosion inhibitors in caustic solutions | |
| JPH04231477A (en) | Tin-lead immersion bath | |
| CN112126268B (en) | Preparation method of water-based graphene slurry for electromagnetic shielding coating | |
| CN112770487B (en) | Flexible composite circuit board with virus killing function and manufacturing process thereof | |
| ES322277A1 (en) | Procedure for the chemical plate of ferrous metal surfaces. (Machine-translation by Google Translate, not legally binding) | |
| CN105336387A (en) | Conductive copper paste for laser and preparation method of conductive copper paste | |
| GB587328A (en) | Process for the stabilization of cellulose ethers | |
| JPS5264871A (en) | Semiconductor surface treating agent | |
| CN113674917A (en) | Preparation method of graphene conductive material | |
| CN117700458A (en) | Corrosion inhibitor and preparation method and application thereof | |
| GB785877A (en) | Improvements in or relating to the surface treatment of aluminium | |
| JPH05156475A (en) | Surface treatment of metal | |
| GB747816A (en) | Improvements in the formation of phosphate coatings on metal surfaces |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |