Feature:Multifunction
Applicable Scene:Casual
Applicable Season:Four Seasons
Model Number:10063
Pattern Type:Solid
Gender:Unisex
Department Name:Adult
Material:Cotton
Origin:Mainland China
CN:Anhui
Item Type:Skullies & Beanies
Product name:Electromagnetic radiation protective hoods
Function:EMF shielding
Radiation protection core material:100% silver fiber
Product weight:0.1 kg
Size:Adjustable size
Color:Black, Gray

The products we sell:
Electromagneticradiation protective hood
The main radiation protection component of hood:
100%
Silver fiber
Frequency range and shielding effectiveness:
Frequency range: 9KHz-40GHz
Shielding effectiveness: 45.0dB-68.6dB
Silver fabric analysis:
The silver fiber radiation protection fabric is a high-tech product obtained by permanently bonding silver to a fiber surface through a special technique. This structure not only makes the silver fiber maintain the original textile property, but also gives it all the The magical function of silver, the magical effect of silver fiber. Silver has the most effective antimicrobial properties. Silver fiber radiation-proof fabric made of silver-containing fiber using nanotechnology is the latest radiation-proof technology in the world after metal anti-radiation fiber cloth. It has the functions of radiation protection, anti-bacterial and anti-fouling. It's anti-radiation effect is superior to radiation-proof fabric made of other metal materials, which can be worn close to the body and beneficial to the human body.
Anti-electromagnetic wave hood shielding principle:
The metal is highly conductive and has an electromagnetic shielding function. When a people wears an anti-electromagnetic wave hood to contact an electronic device, the anti-electromagnetic wave hood can quickly and effectively conduct electromagnetic waves, thereby protecting the body from electromagnetic waves.
Recommended use environment:
Silver fiber anti-electromagnetic radiation fabric is recommended for various military radar stations, electronic countermeasure, wireless communication base stations, civil aviation, meteorology, public security, high-speed, intelligent building monitoring rooms, electromagnetic compatibility laboratory, 5G communication, new energy vehicles, Overhaul of railway communication, etc.
[NOTE]:
1. The silver fiber anti-electromagnetic radiation fabric is monotonous and relatively thin. It is not suitable for making hood directly. It is usually used as the lining of the hood. The outer layer is determined according to customer needs. Therefore, our silver fiber anti-electromagnetic radiation hoods are double layers, and the outer layer is polyester-cotton fabric by default.
2. Silver fiber anti-electromagnetic radiation fabrics exhibit excellent shielding performance under high-frequency electromagnetic radiation environments. The greater the shielding effectiveness value at a certain frequency point or frequency band, the better the protection effect, which is usually 30dB (equivalent to a shielding rate of 99.9%) The above is a very good effect.
The maintenance method of silver fiber:
Silver fiber exposed to the air can't avoid oxidation, the fabric will be black or yellow, is a normal phenomenon,
doesn't affect the shielding effect. To reduce the oxidation of washing, it is recommended to keep the head clean when using, if don't use, it is recommended sealed.
1. It is recommended to wash with well water, mineral water, pure water; (Reason: Some tap water contains chloride ion, and if the chloride ion is excessive, it is easy to react with silver to reduce the damage to silver by alkali and chlorine)
2. Modest amount of neutral detergent, washing for a short time; (Don't use acidic detergent or laundry detergent)
3. Can't rub and washing machine wash. Can't be bleached,  After washing, you can't wring it, pick up directly from the water and hang it in a ventilated and dry room, avoid exposure;
4. It is recommended to wash or wash as little as possible to prevent improper washing effect of shielding.
[NOTE]: Cell phone signal does not equal cell phone radiation
The mobile phone signal is a high-frequency microwave signal. It is the ability of the mobile phone itself to receive signals. It is basically harmless to the human body. The mobile phone signal has spread all over the world and is also supported by the countries of the world. The mobile phone can automatically search for signals. The steel in high-rise buildings is all steel. The elevator can receive signals, so the mobile phone initiative to search for signals has its own particularity. The protective effect of radiation protection hoods cannot be based on the strength of mobile phone signals.
My anti-radiation hoods are protected against electromagnetic waves generated by the sudden increase or decay of electric currents in electronic components, and are not anti-cell-phone signals.
Fabric test methods:
1.Fabric combustion method:
(1)Metal fiber
Ignite the attached fabric sample and find that the burnt sample is a very clean and fine network metal, which indicates that the fabric is very good in material and can effectively shield the radiation.
(2)Silver fiber
The attached fabric sample is ignited and burned to a black globule after being completely burned with fire. After being crushed by force, it can be turned into a powder, which indicates that the material of the fabric is very good and can effectively shield the radiation.
2.Conductivity test method:
Radiation protection clothing and ordinary clothing fabrics are essentially different. Since metal fiber and silver fiber can conduct electricity, radiation protection suits are electrically conductive, while ordinary clothes are not electrically conductive. Bring your own multimeter, or take the radiation protection suit to the appliance maintenance department to check the conductivity of the radiation protection suit.
(1)Ordinary clothing detection
The multimeter is adjusted to the 200 Omega or 2K Omega position. When the multimeter pen is in contact with the test fabric and the distance is 10cm, the resistance value is 1 and the value of the multimeter when the object is not tested is 1, indicating that the ordinary fabric is non-conductive.
(2)Metal fiber testing
The multimeter is adjusted to the 2k Omega gear position. When the multimeter pen is in contact with the test fabric and the distance is 10cm, the resistance value fluctuates around 0.421K Omega, indicating that the metal fiber radiation protection suit has conductivity, so it has anti-radiation effect.
(3)50% Silver fiber testing
The multimeter is adjusted to the 200 Omega gear position. When the multimeter pen touches the test fabric and the distance is l0cm, the measured resistance value fluctuates around 1.1 Omega, indicating that the conductivity of the 50% silver fiber radiation protection suit not only is better than that of the metal fiber but also the radiation protection effect also better than metal fiber.
(4)100% Silver fiber testing
The multimeter is adjusted to the 200 Omega position. When the multimeter pen is in contact with the test fabric and the distance is 10cm, the measured resistance value fluctuates around 0.4 Omega, indicating that the conductivity of the 100% silver fiber radiation suit is better than that of the 50% silver fiber fabric. The anti-radiation effect is also better. It can be seen from the test that the resistance value of 100% silver fiber is relatively small in the fabric, so the conductivity and anti-radiation effect of 100% silver fiber are also better.
3.Conductive test:
The essential difference between radiation-resistant fabrics and ordinary fabrics is that radiation-proof fabrics are conductive and ordinary fabrics are non-conductive, so test the radiation resistance with a multimeter to see if it is effective.
(If there is no multimeter at home, you can take the clothes to the appliance repair department, let the maintenance master test).
4.Professional radiation equipment test method:
The first step: using radiation equipment to detect the host, radiation equipment will display the corresponding radiation value.
The second step: use radiation suits to block the back of the chassis, in the middle of the radiation equipment and the rear of the host computer to block a layer of radiation protection suits, then see the display on the instrument value is 0, indicating that the host computer's electromagnetic radiation is radiated Clothing shielded.
Payment:
We accept all payment methods that listed by Aliexpress
Feedback:
●
Most of the parcels will be shipped via Aliexpress official and EMS shipping method.
● We are not responsible for the delivery time. It normally take 10-25 working days to US EU countries; 20-60 days to rest of the world.
● All items will be dispatched within 1-5 days after payment process is completed.
●
For tax, it depends on the customs rules in the destination country. If you have special requests, please do leave your messages when you place order.
● If you do not receive your parcel after 45 days, please contact us and we will check with our agent. If you do not receive after 60(Brazil-90) days, we will issue refund to you.
About empty parcel:
We could never send empty parcel to our buyer, nor could we send parcel with other objects. Please open the parcel in your post officerrsquos presence. If parcel damaged or empty(stolen), please get the claim request paper from your post office with their stamp. An open-package video is also helpful for you to solve the problem.
Shipping:
1. Your Feedback is really important to us, please take a few seconds to leave a great feedback if you are satisfied with our product and service, thank you so much !!
2. We always offer the lowest price for best goods and service to you.
3. Please contact us through Aliexpress or Email before leaving neutral(3 stars) or negative(1-2 stars) feedback.We will try our best to solve the problem and leave you a happy shopping mood here. Thank you!
If you need more choices, click on the store link below:
https://www.aliexpress.com/store/5605059