The Ph Value Test Of Radiation Protection Clothing For Pregnant Women Showed That 2 Batches Of Products Failed.

With the popularity of WiFi, mobile phones, microwave ovens, refrigerators, photocopiers and computers, electromagnetic radiation has been everywhere. In the full enjoyment of the convenience and comfort of electrification, it has also been increasingly exposed to the hazards of electromagnetic radiation, threatening the health of pregnant women and fetuses.

It has become the most common choice for pregnant women to prevent electromagnetic radiation, and its quality can not be ignored.

At present, there are more radiation protective clothing for pregnant women in the physical store, such as radiation proof abdomen bags, radiation protection vests and radiation protection sling. There are fewer brands of specialized radiation protection clothing for pregnant women in the physical store, and only a few brands such as 100~800, West and mummy are usually priced between $.

Online purchase of radiation protection clothing for pregnant women is more complete, and the price is better than the physical store, between 30~400 yuan.

In order to help consumers correctly choose the radiation protection clothing for their needs, Jiangsu Quality Supervision Bureau commissioned the Jiangsu special protection product quality inspection center in the 1 quarter to provide radiation protection clothing for pregnant women.

Risk monitoring was carried out.

A total of 80 batches of samples were collected from the risk monitoring group, 40 batches of physical stores and 40 batches of online shopping.

The shielding effectiveness, shielding effectiveness, charged charge, pH value, formaldehyde content and air permeability of radiation protection clothing for pregnant women were monitored.

The test results show that

In terms of safety, the pH value test of radiation protection clothing for pregnant women showed that 2 batches of products were unqualified. The pH value of pregnant women's radiation protection clothing was mainly distributed in the 6.0~7.5 interval, and the formaldehyde content accorded with the requirements of the national mandatory standard GB18401-2010.

The concentration of formaldehyde was mainly concentrated in the 1~10mg/kg range.

In terms of comfort, air permeability is mainly concentrated in the 60~180mm/s interval.

The radiation proof clothing of pregnant women with air permeability greater than 80mm/s accounted for 90% of all batches of radiation protection clothing, and the overall test results of air permeability were good.

Shielding effectiveness represents the protective ability of radiation protection clothing to electromagnetic waves. It is an important index to measure the electromagnetic shielding performance of radiation protection clothing, and it is more obvious by shielding materials and style structure.

From the test results, we can see that at present, 95% of the products in the radiation protection clothing market of pregnant women in Jiangsu province have better protection ability. From the results of shielding effectiveness test at different frequency points, we can see that with the increasing frequency of testing, shielding effectiveness of radiation protection clothing also shows an upward trend. Therefore, shielding effectiveness of radiation protection clothing at different frequencies has a certain degree of fluctuation, which is related to the structure and thickness of shielding materials.

In addition, the shielding effectiveness of pregnant women's radiation protection clothing is better, mainly concentrated in the 20dB~80dB interval, but the shielding effectiveness will gradually decrease after washing.

Among them, there were 4 batches of shielding effectiveness in the 0~10dB interval before washing, accounting for 5% of all batches of radiation protection clothing. The shielding rate of these batches of pregnant women's radiation protection clothing was less than 90% in the partial frequency range, mainly in the range of 300 thousand Hz to 10 MHz. After washing, the shielding efficiency of the parts at the frequency fraction of 0~10dB was 8 batches, accounting for 10% of all batches of radiation protection clothing.

Comparing the results of shielding effectiveness before and after washing, it was found that all batches of radiation protection clothing decreased to varying degrees at different frequency points, and the shielding effectiveness descended in 20 batches in the 30%~80% interval, accounting for 25% of all batches of radiation protection clothing.

The shielding effectiveness of 1 batches of radiation protection clothing is more than 90%, and the shielding effectiveness after washing can not meet the protection requirements, and completely lose its electromagnetic shielding ability.

After analysis, it is found that the material is metal coated fiber fabric. After washing, the shielding layer will fall off, and its air permeability is worse than other shielding materials.

The radiation protection clothing for pregnant women is similar to that of the radiant clothing and antistatic clothing from the principle of manufacture, whether it is conductive fiber blended or the conductive wire embedded in the fabric.

This risk monitoring is based on GB 12014-2009 to detect charged charges in pregnant women's radiation protective clothing.

The amount of charged electric charge accords with the requirements of GB 12014-2009 "antistatic clothing". 77.5% of the batches meet the requirements of charged charge level a, and the remaining 22.5% batches meet the B requirement of charged charge.

Lu Bing, director of the Jiangsu special protection product quality inspection center, said that when buying pregnant women's radiation protection clothing, they should choose the certificate produced by the regular manufacturer, such as the sign and identification, and also indicate the manufacturer, address, telephone, fiber content and so on. When choosing the right fabric, many radiation protective clothing will have good radiation protection effect, but the fabric is very hard and airtight. It is very difficult for the pregnant woman to wear in summer, but it will be harmful to the pregnant women and the fetus.

Therefore, in order to ensure the radiation protection effect, we should try to choose the best radiation protective clothing. If the surrounding electrical appliances are more, we should choose the radiation shielding clothing with high shielding effectiveness and better radiation protection effect. Choose the right size, because the pregnant women's radiation protection clothing is expensive and save money. Most families often protect themselves from radiation until they are pregnant. Therefore, to buy enough large size, the belly type anti radiation suit is only suitable for the early pregnant women. To see whether the radiation protection clothing can be washed, if it can be washed, it should be maintained according to the standard washing method, so as to prevent the radiation proof clothes from failure after washing.