"21 Radiation Protection Clothing Comparison Test Results Report" Released

Recently, the China Consumer Association has released the 21 paragraph.

Comparison test results report.

The report shows a high price of silver fiber.

The protective performance of protective clothing and metal fiber protective clothing is not significantly different. The main factor affecting the shielding effectiveness of the protective clothing is clothing style.

The 21 pregnant women's radiation protection clothing was covered by the survey.

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The price of the sample involves 3 intervals: 10 yuan for 400 yuan / piece, 8 yuan for 400~1000 yuan / piece, and 3 yuan for 1000~1500 yuan / piece.

The radiation protection clothing included in this survey includes vest skirt, sling, abdomen pocket and so on. It basically covers the types of pregnant women's radiation protection clothing.

In view of the fact that the state has not yet issued a standard for daily use of radiation protection clothing, this test is based on the GB/T23463-2009 protective clothing microwave protective clothing standard to set up the testing system.

The frequency of the incoming electromagnetic field is 100~500MHz, 500~1000MHz and 2.45GHz respectively, which basically covers the frequency range of the main electromagnetic waves existing in the living space.

In addition, due to the wide range of power frequency electromagnetic fields in life, this experiment also tests the shielding effectiveness of clothing for power frequency alternating electric field with corresponding equipment.

The test also tested the effects of different washing methods on shielding effectiveness.

In the experiment, all the radiation proof clothing samples were subjected to single washing of two washing methods, machine wash and hand washing respectively.

The machine washes according to the GB/T8629 standard 6A way, and uses the hanging air drying method to dry the clothes to simulate the machine washing conditions during the normal use of the clothes. The hand washing process is washed according to the recommended washing labels.

The test results show that the radiation proof clothing samples generally have good shielding effectiveness for the widely used 50Hz in daily life.

In other words, computers, vacuum cleaners, washing machines, humidifiers, air conditioners, rice cookers and other household appliances that use 50Hz alternating current in China can basically be shielded from radiation.

Most samples have obvious shielding effect on 2.45GHz electromagnetic waves, but the shielding effect of electromagnetic waves in 100MHz~2.45GHz range is low.

Fabric is the key factor that determines the technology content, product value and protective ability of radiation protection clothing. The radiation protection clothing has gradually developed to the present metal and silver fibers from the original copper nickel coating material.

Among them, the high price silver fabric protective clothing has been touted by consumers.

However, the experimental results of the report show that there is no significant difference in the sample protection performance between the high priced silver fabric samples and the metallic fiber fabrics.

Silver fiber has better comfort, but its shielding effectiveness has not improved significantly compared with the sample made of metal fiber fabric, but because its fabric contains silver ions, the price of clothing is relatively high.

The main factor affecting the shielding effectiveness is the style of protective clothing.

On the whole, the smaller the length of the opening, the longer the length of the garment, the better the shielding effectiveness.

The collar, hem, cuffs and trousers of the special protective clothing are all closed. The coat of the coat is longer and has better shielding effect for electromagnetic waves.

The protective clothing of the pregnant woman's radiation proof clothing is better for the electromagnetic wave incident on the front side, but has no effect on the electromagnetic wave incident on the back side, and is only suitable for wearing the electromagnetic radiation source in the front.

Longer waistcoat skirt is better for abdominal protection.

However, for the convenience of wearing, the existing pregnant women's radiation protection clothing products often use a low neckline and a large style under the armpit opening, and the hem of the garment is usually high, so it is difficult to achieve good protection for the chest and lower abdomen.

In this regard, the head of the Consumer Association said that the key to the impact of electromagnetic radiation on pregnant women and fetuses is the exposure time and intensity.

The electromagnetic radiation of pregnant women mainly comes from household appliances. The state has strict requirements for electromagnetic radiation of such products, and qualified products will not affect human safety.

However, if pregnant women are under the condition of strong electromagnetic radiation or have proved that there is high energy electromagnetic wave in the environment, protective clothing products with better shielding effectiveness should be used.