1. How to distinguish the quality of stainless steel metal fiber radiation protection clothing? Whether it can shield electromagnetic waves, many people use radiation detection pens, but what to do without shielding. The direct way is to pick up the landline and dial the mobile phone next to it. When the mobile phone is dialed out, it will interfere with the microphone product. Use radiation protection clothing to separate the mobile phone from the fixed telephone, and the interference will disappear, which proves that your clothes have the function of shielding electromagnetic radiation. Using the above method, both clothes are effective, so how to distinguish which of these two clothes has better shielding effect? There is a sample cloth on every dress. After burning the sample cloth, see which metal fiber mesh is dense after burning, and the metal fibers are arranged neatly, which shows that the effect is good, and the metal mesh is arranged in disorder, so it is better to arrange it neatly.
2. Test method for radiation protection of silver fiber: Silver fiber is nylon filament silver-plated and cannot be tested by burning sample cloth. Silver fiber radiation protection clothing can generally shield the mobile phone signal, and wrap the mobile phone with clothes, and the signal attenuation is basically zero in half a minute.
3. How to compare metal fiber and silver fiber, which is better? Tested with a multimeter, the smaller the resistance. The better the shielding effect. The same distance test results. The resistance of metal fiber type is obviously greater than that of silver fiber type. Silver fiber has a wide shielding range. If the signal is strong, silver fiber can wrap the mobile phone, but stainless steel metal fiber is slightly different.
4. Cover up the misunderstanding of cell phone signal testing. In different places, in different directions, and more importantly, the measurement results at the same time are different. Don't blindly believe in building a mobile phone. In addition to mobile phones, many household appliances and office appliances will produce harmful radiation sources. Short-range radiation is harmful to human body, while far-field signal is not harmful to human body.
Second, how to buy radiation protection clothing
1. parcel telephone method
There are many kinds of radiation protection suits on the market, and the styles are also very beautiful. But the most important thing in choosing radiation protection clothing is whether it can prevent radiation. So I suggest that after you get the radiation suit, wrap your mobile phone in the radiation suit and let it stand for ten minutes before trying to use another mobile phone. If it doesn't ring, it must be radiation protection. If it rings, it doesn't mean it will ring. At this time, it depends on whether the cell phone is full when it is taken out of the radiation protection suit. If you are not satisfied, it means that this radiation protection suit can still protect against radiation, because everyone's position signal strength is different and their ability to receive signals is different, so different people will try the same radiation protection suit.
2. Jamming signal method
Everyone may encounter this situation when surfing the internet, that is, when surfing the internet, the speaker suddenly makes a series of noises, and it is basically certain that it is a phone call. Therefore, we can also use this method to see whether the radiation protection ability of radiation protection clothing is strong or not. Specifically, when the computer sends out the miscellaneous room again, we can put the radiation protection suit between the computer and the mobile phone. If the utility room disappears immediately, it proves that the radiation protection ability of clothes is still very good.
3. Radiation protection clothing materials
This method is a bit destructive. Generally, businesses use it more. Is it personal? Just get to know it briefly! We all know that radiation protection clothing can prevent radiation because there is a metal mesh inside the clothes. The denser the metal mesh, the better the radiation protection effect. You can cut a small piece of radiation protection clothing and ignite it with fire to see if the remaining metal is tight after burning. If it is tight, you can consider it!
4. Conductivity
The biggest difference between radiation protection clothing and ordinary clothes is that radiation protection clothing has good conductivity, so parents who want to choose radiation protection clothing can ask experienced teachers to help test whether the selected clothes have conductivity.
Third, the fabric of radiation protection clothing
Mainstream fabric
1, metal fiber blended flour. Generally, the stainless steel metal fiber with a diameter of about 0.008 mm is blended with cotton, polyester and other fibers, and the shielding value of a good fabric is above 30D B. Because other fabrics are added, it has better elasticity. Parameters: breathable, washable and stable shielding performance.
2. All-silver fiber knitted fabric. The silver fiber referred to here is not pure silver, but a new type of composite fiber formed by the fusion of silver ions and ordinary fabrics. In addition to good air permeability, it also has antibacterial and maintenance effects on human body, and the shielding value of all-silver fiber knitted fabric is greater than 70DB. This fabric is easy to oxidize, but oxidation does not affect the radiation protection effect and the use of clothes. Parameters: breathable, washable, antibacterial, static-free and stable shielding performance.
3. Half silver fiber blended fabric. Semi-silver fiber fabric refers to the fabric blended by silver fiber and polyester fiber. The shielding value of this fabric is between metal fiber and all-silver fiber fabric, which is about 50-60DB. Usually, the oxidation resistance is higher than that of all-silver fiber fabric, and it also has antibacterial maintenance function. Parameters: breathable, washable, antibacterial, static-free and stable shielding performance.
4. Known as the "queen of fiber", the silk quilt is made of silver fiber fabric, which is perfectly integrated with silver fiber. The mulberry silk used in the radiation protection clothing of "Silkworm quilt and silver fiber" has never been polluted in the production process from mulberry planting to reeling, and it is absolutely green and very environmentally friendly. The gloss is higher, and it is more graded than ordinary radiation protection clothing. At the same time, because the product has super breathability, pregnant women can wear it next to their bodies, remove dampness and sweat, which is green and environmentally friendly and has no irritation to the skin at all.
5. Deep-sea sediment fabric. Deep-sea deposition fabric refers to the fabric made by blending metal fiber or silver fiber developed by deep-sea deposition technology with lint fiber with micronaire value of 4. 1~4.3. This kind of fabric, produced by modern technology, can effectively shield up to 80DB of radiation and is the best mainstream fabric. For the field of radiation protection, it is also a technological change, which greatly improves the radiation protection effect and service life of clothing. After visiting various places, the team decided to use cotton from Xinjiang, China as the fiber material of radiation protection clothing. We know that the cotton in Xinjiang can compete with the best Egyptian cotton in the world in softness, color and air permeability. And only lint with a micronaire of 4. 1~4.3 has the best fiber abuse. When metal fiber and silver fiber are blended, the radiation protection net can be denser. Has good air permeability and deodorizing and sterilizing effects. Parameters: breathable, washable, antibacterial, static-free and stable shielding performance.
Other fabrics
Metal-plated (metal coated) fabric. It means that copper and nickel ions are coated on ordinary fabrics. Although the shielding performance is about 50-60DB, due to the impermeability and washability of the shielding layer and the fact that copper and nickel ions cannot directly contact the skin, it is necessary to make it into three layers to avoid the washing and contact of the shielding layer on the skin. This kind of fabric will fall off after a period of use or washing, and it has been eliminated by most manufacturers. Parameters: poor air permeability, failure after washing, no contact with skin. 2. Multi-ionic fabric. Different from other fabrics, the working principle of multi-ion fabrics is to absorb electromagnetic waves, not to shield them. It was widely used around 2002, but it was not popularized because of its short service life and unstable performance. The market application technology of this kind of fabric is still immature, which needs further research and development. Parameters: breathable, washable, temporarily unstable. 3. Silver fiber coated fabric. Made of relatively backward silver fiber coating technology, it has the characteristics of high shielding performance and antibacterial retention of silver fiber. This kind of fabric has poor air permeability, can't be washed, and its market prospect is not optimistic, so it is not widely used. Parameters: poor air permeability, washability, unstable performance and antibacterial maintenance.
Radiant blanket
It is found that the radiation generated by the computer will affect the development of the fetus, which will seriously cause fetal malformation. Hera radiation blanket can be used for pregnant mothers who are pregnant. Radiation blanket is made of metal fiber and textile fiber, and its manufacturing process is complicated. That is, the metal is drawn into filaments, forming a network structure inside the fabric. This metal fiber net can reflect electromagnetic waves. When the aperture of the metal mesh is smaller than the wavelength of electromagnetic wave (wavelength = light speed/frequency) 1/4, it can effectively block electromagnetic radiation from the body.
Four. Precautions for radiation protection clothing
affect
Regular radiation protection clothing brands are tested by authoritative testing institutions. Radiation protection effect can refer to the test report. It is recommended not to check the dB value, because this concept has many definitions and it is difficult for non-professionals to judge. You can directly check the percentage of electromagnetic radiation shielding at a certain frequency point. Observe the highest and lowest electromagnetic radiation shielding rate and the difference between them, and have a general understanding of the radiation protection effect of this brand.
colour
At present, the color of the most widely seen radiation protection clothing on the market is navy blue. Because the fabric of radiation protection clothing contains metal wires, it is not suitable for frequent washing, so choose the color of stain resistance, and navy blue radiation protection clothing is more stain resistant. In addition, radiation protection suits such as purple, blue, gray and military green are also relatively resistant to dirt, and expectant mothers can decide according to their own preferences.
Fabric type
There are many kinds of anti-radiation flour materials on the market. There are coating type, multi-ion type, metal fiber type and so on. There are many differences in radiation protection effect, wearing comfort, air permeability and washing resistance. It is recommended to know the types and characteristics of radiation protection fabrics before buying. The metal fiber type is characterized by good radiation protection effect and good wearing effect, and can be directly washed.
style
Pregnant women who love beauty can choose a new radiation protection suit. Radiation protection clothing has various styles: radiation protection skirt, radiation protection underwear, radiation protection vest, radiation protection Chinese-style chest covering, etc. You can choose according to your own needs and places to wear. The protective effect of radiation protection vest is basically the same, but it looks different. Then it seems that you can choose which one looks good. Radiation underwear is for white-collar workers who are not pregnant to protect themselves. Of course, expectant mothers who are ready to get pregnant can also wear underwear first, but once they are pregnant for 3 months, they must wear a vest to protect them before and after (to protect the spinal nervous system). So just judge according to your pregnancy.
Market pricing
Different brands of radiation protection clothing have different fabrics, processes and styles, and their prices are different, which also brings difficulties to purchase. It is suggested to know the specific style on the basis of understanding the fabric and technology of this brand. Is the whole dress made of radiation-proof fabric? You can refer to the market price of single-layer bellyband or sling. General brands have this style, and the fabrics used are not very different. So that we can have a rough comparison.
Effect test
Under amateur conditions, we can only "qualitatively" test whether there is radiation protection effect, and we can't accurately know how good the radiation protection effect is. Generally, a sample cloth will be attached to the radiation protection clothing, and the authenticity of the clothing can be judged according to the testing method provided by the manufacturer. If it is a metal fiber fabric, you can burn this sample fabric. If you can see a very fine metal mesh structure after burning, it shows that this sample fabric has radiation protection effect. The more intuitive judgment method is "shielding mobile phone interference". The specific method is: turn on the speaker switch of the computer. When the mobile phone dials or answers near the speaker, there will be a "beep" pulse interference sound. Use radiation-proof clothes to block between the mobile phone and the speaker, then dial or answer, and the interference will disappear. It shows that the radiation protection suit shields the electromagnetic interference generated by the mobile phone.
measure
The size of radiation protection suits is a headache when we buy radiation protection suits for pregnant women. Because our bodies will change greatly after pregnancy, we must choose the right size when buying radiation protection suits.