CN1505466A - Electromagnetic radiation protective materiall and preparation method thereof - Google Patents
Electromagnetic radiation protective materiall and preparation method thereof Download PDFInfo
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- CN1505466A CN1505466A CNA021508186A CN02150818A CN1505466A CN 1505466 A CN1505466 A CN 1505466A CN A021508186 A CNA021508186 A CN A021508186A CN 02150818 A CN02150818 A CN 02150818A CN 1505466 A CN1505466 A CN 1505466A
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Abstract
The invention is a kind of electromagnetism radiation protection material, which is made up of 20-35 nano ferric iron oxide, 45-60 rubber, 8-10 plasticizers, 5-7 vulcanized agents, and 5-7 accelerators. The method includes batching step, rubber rolling and melting step, sulfuration forming step. The material has excellent masking effect to the electromagnetism radiation.
Description
Technical field
The present invention relates to a kind of protective materials, relate in particular to a kind of electromagnetic radiation protection material of preventing electromagnetic radiation and preparation method thereof that is used to.
Background technology
Electromagnetic radiation is ubiquitous, along with the progress of modern science and technology and the raising of people's material and cultural life, and electrical equipment, electronic product, the foundation of diverse network etc. has the product of electromagnetic radiation source also more and more.The electromagnetic interference that itself is subjected to is also more and more, more and more serious, other need prevent the zone and the equipment of electromagnetic interference, for example secret meeting room, electromagnetic radiation measuring chamber, precision electronic device operating room etc. various with electromagnetic surveying, relevant facility or the product of protection, its demand that prevents radiated interference is also more and more urgent.Prior art mainly adopts the metallic spacer protective shielding or object of protection is utilized the electromagnetic wave short circuit for the interference that prevents electromagnetic radiation, changes electromagnetic order or direction, thereby reaches the purpose of electromagnetic protection.The shielding action of above electromagnetic protection method is limited, and it is big to take up room, the construction cost height, and cost is also high, and inconvenience is applied; Some place also influences attractive in appearance, and its effect is also very undesirable, also must utilize multiple safeguard procedures such as combined type in order to reach better effect sometimes.
Summary of the invention
The object of the present invention is to provide a kind of electromagnetic radiation protection material and preparation method thereof, it has good shielding action to electromagnetic radiation, and effectively counterchecking electromagnetic wave is to the injury of human body with to the interference of precision instrument.
The object of the present invention is achieved like this:
A kind of electromagnetic radiation protection material is characterized in, described electromagnetic radiation protection material is formed by its proportioning (weight %) processing and fabricating by following material:
Nanometer ferrite 20-35%; Rubber 45-60%;
Softening agent 8-10%; Vulcanizing agent 5-7%;
Promoter 5-7%.
In above-mentioned electromagnetic radiation protection material, wherein, described rubber is nitrile rubber; Described softening agent is a dioctyl phthalate; Described vulcanizing agent is a sulphur; Described promoter is the mixture of N-cyclohexyl-2-[4-morpholinodithio base sulfenamide, tetramethylthiuram disulfide and 2-benzothiazolyl mercaptan.
In above-mentioned electromagnetic radiation protection material, wherein, the granularity of described nanometer ferrite is less than 100 nanometers.
The above-mentioned electromagnetic radiation protection preparation methods of a kind of making is characterized in that described preparation method's step comprises:
The first, batching step
Check that used each raw material have the no abnormal wet conglomeration that has a tidal wave of, impurity to sneak into etc., get the pure raw material of dried and clean and accurately take by weighing by following proportioning (weight portion):
Nanometer ferrite 20-35%; Rubber 45-60%;
Softening agent 8-10%; Vulcanizing agent 5-7%;
Promoter 5-7%;
The second, the mixing step of friction
Get nanometer ferrite and the rubber mix that step 1 accurately takes by weighing and evenly place the friction machine, add the softening agent that accurately takes by weighing, the rotating speed and the temperature of control friction machine, mixing 10 minutes of friction, add vulcanizing agent and the promoter that accurately takes by weighing then, the rotating speed and the temperature of control friction machine, mixing 20 minutes of friction gets semi-finished product;
Three, sulfidization molding step
Step 2 gained semi-finished product are placed the mould of vulcanizing press, control certain temperature and pressure, vulcanized 4 minutes, electromagnetic radiation protection material qualified products.
In above-mentioned electromagnetic radiation protection preparation methods, wherein, in described step 2, the rotating speed of friction machine is controlled at 1800-2000 rev/min.
In above-mentioned electromagnetic radiation protection preparation methods, wherein, in described step 2, the temperature of friction machine is controlled at 40-60 ℃.
In above-mentioned electromagnetic radiation protection preparation methods, wherein, in described step 3, the temperature of vulcanizer is controlled at 150-156 ℃.
In above-mentioned electromagnetic radiation protection preparation methods, wherein, in described step 3, it is 10 MPas that the pressure of vulcanizer is controlled at dull and stereotyped pressure gauge pressure.
Electromagnetic radiation protection material of the present invention and preparation method thereof is owing to adopted above technical scheme, nanometer ferrite with high magnetic permeability is scattered in the figuration carrier rubber, obtain a kind of the have Electro Magnetic Compatibility and the effective electromagnetic radiation protection material of shielding electromagnetic wave, effectively counterchecking electromagnetic wave is to the injury of human body with to the interference of precision instrument.This electromagnetic radiation protection material is used for the electromagnetic microwave measuring chamber, fully the interference of shielding electromagnetic wave; Be used for the mobile phone radiation filter, can make electromagnetic wave attenuation 94%; Be used for the precision electronic device laboratory, can effectively stop outdoor electromagnetic interference, make precision electronic device stop abnormal response.
Electromagnetic radiation protection material of the present invention detects through screening effectiveness, result such as following table:
| Frequency (MHz) | Screening effectiveness (dB) | See through the conductively-closed of protective materials electromagnetic wave energy and fall (%) |
| ?800 | ?12.5 | ?94.4 |
| ?900 | ?12.6 | ?94.5 |
| ?1800 | ?13.3 | ?95.3 |
The result shows that electromagnetic radiation protection material of the present invention has good electromagnet shield effect.
Embodiment
Embodiment 1
Accurately take by weighing dried and clean 48 kilograms of 32 kilograms of high magnetic permeability nanometer ferrites, nitrile rubbers, mix the friction machine that places, 8 kilograms of the dioctyl phthalates that adding accurately takes by weighing, 1800-2000 rev/min of control friction machine rotating speed, temperature 40-60 ℃, mixing 10 minutes of friction adds 7 kilograms of 5 kilograms in sulphur accurately taking by weighing and promoter then, 1800-2000 rev/min of control friction machine rotating speed, temperature 40-60 ℃, mixing 20 minutes of friction gets semi-finished product; Get a certain amount of mould that places vulcanizing press of cooled semi-finished product, 150-156 ℃ of temperature of control, dull and stereotyped pressure gauge pressure 10 MPas were vulcanized 4 minutes, made electromagnetic radiation protection material of the present invention.
Embodiment 2
Accurately take by weighing dried and clean 55 kilograms of 24 kilograms of high magnetic permeability nanometer ferrites, nitrile rubbers, mix the friction machine that places, 9 kilograms of the dioctyl phthalates that adding accurately takes by weighing, 1800-2000 rev/min of control friction machine rotating speed, temperature 40-60 ℃, mixing 10 minutes of friction adds 5 kilograms of 7 kilograms in sulphur accurately taking by weighing and promoter then, 1800-2000 rev/min of control friction machine rotating speed, temperature 40-60 ℃, mixing 20 minutes of friction gets semi-finished product; Get a certain amount of mould that places vulcanizing press of cooled semi-finished product, 150-156 ℃ of temperature of control, dull and stereotyped pressure gauge pressure 10 MPas were vulcanized 4 minutes, made electromagnetic radiation protection material of the present invention.
Embodiment 3
Accurately take by weighing dried and clean 50 kilograms of 28 kilograms of high magnetic permeability nanometer ferrites, nitrile rubbers, mix the friction machine that places, 10 kilograms of the dioctyl phthalates that adding accurately takes by weighing, 1800-2000 rev/min of control friction machine rotating speed, temperature 40-60 ℃, mixing 10 minutes of friction adds 6 kilograms of 6 kilograms in sulphur accurately taking by weighing and promoter then, 1800-2000 rev/min of control friction machine rotating speed, temperature 40-60 ℃, mixing 20 minutes of friction gets semi-finished product; Get a certain amount of mould that places vulcanizing press of cooled semi-finished product, 150-156 ℃ of temperature of control, dull and stereotyped pressure gauge pressure 10 MPas were vulcanized 4 minutes, made electromagnetic radiation protection material of the present invention.
Claims (8)
1, a kind of electromagnetic radiation protection material is characterized in that: described electromagnetic radiation protection material adds I by following material by its proportioning (weight %) and is made:
Nanometer ferrite 20-35%; Rubber 45-60%;
Softening agent 8-10%; Vulcanizing agent 5-7%;
Promoter 5-7%.
2, electromagnetic radiation protection material according to claim 1 is characterized in that: described rubber is nitrile rubber; Described softening agent is a dioctyl phthalate; Described vulcanizing agent is a sulphur; Described promoter is the mixture of N-cyclohexyl-2-[4-morpholinodithio base sulfenamide, tetramethylthiuram disulfide and 2-benzothiazolyl mercaptan.
3, electromagnetic radiation protection material according to claim 1, it is characterized in that: the granularity of described nanometer ferrite is less than 100 nanometers.
4, the above-mentioned electromagnetic radiation protection preparation methods of a kind of making, it is characterized in that: described preparation method's step comprises:
The first, batching step
Check that used each raw material have the no abnormal wet conglomeration that has a tidal wave of, impurity to sneak into etc., get the pure raw material of dried and clean and accurately take by weighing by following proportioning (weight %):
Nanometer ferrite 20-35%; Rubber 45-60%;
Softening agent 8-10%; Vulcanizing agent 5-7%;
Promoter 5-7%;
The second, the mixing step of friction
Get nanometer ferrite and the rubber mix that step 1 accurately takes by weighing and evenly place the friction machine, add the softening agent that accurately takes by weighing, the rotating speed and the temperature of control friction machine, mixing 10 minutes of friction, add vulcanizing agent and the promoter that accurately takes by weighing then, the rotating speed and the temperature of control friction machine, mixing 20 minutes of friction gets semi-finished product;
Three, sulfidization molding step
Step 2 gained semi-finished product are placed the mould of vulcanizing press, control certain temperature and pressure, vulcanized 4 minutes, electromagnetic radiation protection material qualified products.
5, electromagnetic radiation protection preparation methods according to claim 4 is characterized in that: in described step 2, the rotating speed of friction machine is controlled at 1800-2000 rev/min.
6, electromagnetic radiation protection preparation methods according to claim 4 is characterized in that: in described step 2, the temperature of friction machine is controlled at 40-60 ℃.
7, electromagnetic radiation protection preparation methods according to claim 4 is characterized in that: in described step 3, the temperature of vulcanizer is controlled at 150-156 ℃.
8, electromagnetic radiation protection preparation methods according to claim 4 is characterized in that: in described step 3, it is 10 MPas that the pressure of vulcanizer is controlled at dull and stereotyped pressure gauge pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021508186A CN1505466A (en) | 2002-11-29 | 2002-11-29 | Electromagnetic radiation protective materiall and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021508186A CN1505466A (en) | 2002-11-29 | 2002-11-29 | Electromagnetic radiation protective materiall and preparation method thereof |
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| Publication Number | Publication Date |
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| CN1505466A true CN1505466A (en) | 2004-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA021508186A Pending CN1505466A (en) | 2002-11-29 | 2002-11-29 | Electromagnetic radiation protective materiall and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540612C (en) * | 2007-12-07 | 2009-09-16 | 中北大学 | The preparation method of nano magnetic ferrite particle and magnetic damping rubber thereof |
| CN105367854A (en) * | 2015-12-03 | 2016-03-02 | 丁玉琴 | Preparation method for nanoscale iron slag-modified styrene-butadiene rubber composite wave-absorbing material |
-
2002
- 2002-11-29 CN CNA021508186A patent/CN1505466A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540612C (en) * | 2007-12-07 | 2009-09-16 | 中北大学 | The preparation method of nano magnetic ferrite particle and magnetic damping rubber thereof |
| CN105367854A (en) * | 2015-12-03 | 2016-03-02 | 丁玉琴 | Preparation method for nanoscale iron slag-modified styrene-butadiene rubber composite wave-absorbing material |
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