Radiation protection clothing is useful is certainly, China Electromagnetic Association President, Chinese Academy of Engineering Academician Liu Shanghe said that "radiation protection clothing is certainly useful". First of all, we need to understand the production principle of radiation protection clothing. Anti-radiation clothing is woven into fabric with metal fibers, then made into clothes, that is, radiation clothing contains a layer of internal metal mesh, metal mesh is composed of a loop will produce induced current, by the induced current generated by the reverse electromagnetic field shielding, in addition to the metal can also reflect electromagnetic waves. Therefore, the metal mesh can play a role in shielding electromagnetic waves.
In order for more people to recognize the shielding effect of radiation protection clothing, electromagnetic association experts have done laboratory experiments as well as ordinary family experiments, experiments have proved that, whether it is a single source of radiation or a number of sources of radiation, the effect of radiation protection clothing is very obvious. In fact, in our lives, a lot of protective materials are used in the principle of metal mesh shielding, such as our cable, high-voltage boxes, computer mainframe boxes, careful people will find that the outer layer is wrapped in some metal material, the purpose is to reduce radiation leakage. So "anti-radiation clothing in the end there is no use" the truth of this issue is very obvious, anti-radiation clothing on the shielding of radiation is absolutely useful.
How to choose radiation protection clothing?
(1) to distinguish the material fabric, to prevent the "second best".
Currently, there are two main types of radiation protection clothing on the market: metal fiber and silver fiber radiation protection clothing. The difference between the two materials is very big, few fake, confusing merchants, therefore, we follow the product description, the basic can buy the corresponding material radiation clothing. As silver fiber than metal fiber high-grade, high cost, high price, some unscrupulous traders began to play the idea of silver fiber. Fraudulent means: the use of copper-nickel coated fabrics have long been eliminated to pretend to be silver fiber products! Silver fiber radiation clothing fabrics and copper-nickel coated fabrics of the two base color visually closer, are silver, but a little more carefully, the difference is also more obvious. Copper nickel coated radiation clothing first appeared in the last century 80, 90's, mainly used in industry, shielding capacity is poor, toxic, can not be worn close to the body, more can not be used as a maternity radiation clothing, the price is very cheap, is the silver fiber 1/10. through careful identification, it is not difficult to find out: copper nickel coated with silver fiber radiation clothing is the biggest difference: the former is not breathable, board hard; the latter soft, sagging, lightweight!
(2) identify whether the shielding value is false, to prevent the "value" high "price" expensive
As a functional product, radiation protection clothing is good or bad, depends largely on the fabric material. Legitimate enterprises in each product will be attached to the radiation protection clothing fabric test report. The key item in the test report - the radiation shielding value of the high and low, determines the product anti-radiation performance advantages and disadvantages. Some unscrupulous merchants will be through the PS means to increase the shielding value of radiation protection clothing fabrics, in order to increase the selling price, to deceive consumers, when buying, it is best to compare a number of, to prevent being cheated!
(3) lack of national standards for radiation protection clothing, beware of counterfeiting, substandard
Radiation protection clothing is currently no national mandatory standards, so some unscrupulous merchants began to take advantage of counterfeiting, radiation protection clothing fabrics of inferior materials, pretending to be a good radiation protection clothing products, deceiving consumers, consumers and the entire radiation protection clothing industry should be caused concern. Recently, the National Shielding Material Standards Committee member units, is trying to promote the development of national mandatory standards for radiation protection clothing, I believe that in the near future, the emergence of relevant industry standards, will greatly reduce the current radiation protection clothing industry, there is a "substandard," "indiscriminate "The phenomenon. Common tricks (1) radiation protection clothing fabrics in the silver content, much lower than the value of the enterprise's publicity; (2) the unit area of radiation protection clothing fabrics, textile density is low, cutting corners and reducing costs; (3) the selection of a major brand out of the fabric or secondary material production of radiation protection clothing, fabric miscellaneous points, easy to produce a "short-board" effect, product performance Low. Purchase, be sure to carefully observe the fabric, and as far as possible to buy a line of radiation protection clothing products.
How to detect the authenticity of radiation protection?
Method 1: cell phone signal detection method
Many salespeople in the industry in the detection of pregnant women's radiation protection clothing, radiation will be wrapped in a cell phone, and dial the phone, detecting the signal of the phone, thus verifying the radiation protection clothing shielding effect. This method is simple and practical, but there are certain flaws, because the cell phone signal is also very much related to the environment at the time. So pregnant mothers should not easily believe this method.
Method two: sound test method
pregnant mothers can prepare a sound and two cell phones, the first experiment will sound open, placed next to a cell phone, with another cell phone to dial the phone, the phone will be found after the sound will be connected to the sound of the noise, which is due to the sound radiation and cell phone radiation due to the impact of each other; the second experiment, pregnant mothers can buy their own Jingqi maternity radiation clothing wrapped around the exterior of the sound. The second experiment, pregnant mothers can buy their own Jingqi maternity radiation protection clothing wrapped in the exterior of the sound, again dialing the phone, will find that the sound, did not send out ZiZi murmur, proving that the radiation protection clothing is useful.
Method 3: conductive test method
We all know that the reason why the pregnant women's radiation protection clothing is able to shield electromagnetic radiation is because of the internal radiation protection clothing contains metal fibers and silver fibers, and these two types of fibers have the ability to conduct electricity. Conditional pregnant mothers can use the radiation meter detection, or pregnant mothers can also use the multimeter to detect the conductivity of the fabric, radiation protection clothing has a strong conductivity indicates useful, otherwise invalid.
Method 4: combustion method
Since the radiation protection clothing contains metal fibers, so different from ordinary clothes, the ashes formed after combustion are not the same. Pregnant mothers can take a small piece of sample cloth in the maternal radiation protection clothing for testing. Brands like Jingqi and Qiaowei will prepare a sample cloth for consumers to test. Pregnant mothers in the fire after combustion if the test fabric is found to leave a black metal mesh or a black ball, that radiation protection clothing fabrics contain metal fibers and silver fibers, is with the shielding effect, and vice versa is not useful.
Method 5: Electromagnetic ball test method
This experiment has been done in a CCTV program. The experiment requires the preparation of an electromagnetic ball, a lamp, a radiation suit. First of all, turn off the lights, keep a dark environment, so that you can well observe the lamp change, in the case of unplugged, the lamp will be placed on top of the electromagnetic ball, found that the light glows. Then the radiation suit covers the electromagnetic ball, again using the lamp near the electromagnetic ball, found that the lamp does not glow, and for comparison, but also the use of ordinary clothes to cover the electromagnetic ball, the lamp is still glowing, so it can be seen that the radiation suit is useful.