Is using nano sponge harmful to our health when doing housework?

Sihang

Nanosponge graduate student

Nano-sponge also known as clean sponge magic sponge wipe, the technical term is called melamine sponge (melamine sponge) .kitchen sponge brand Household stainless steel products, bathroom supplies, glass supplies, ceramic tiles, leather sofas, cars, tables and chairs, wood floors and other cleaning supplies are very effective, just need water to quickly remove the stains left when cleaning, so it quickly became known to everyone.

However, it is reported that the raw material of nano sponge is melamine, sponge wholesale manufacturerwhich is harmless to human body. The main reason for people's doubts is the influence of the melamine tainted milk powder incident. However, melamine (melamine) is not toxic, and the incident of poisoned milk powder is because the milk powder mixed with melamine was eaten by children. Non-toxic does not mean edible. Just like stone is not poisonous, if you break it into powder and eat it, there will be problems, indigestion, malnutrition and even death. Melamine itself is indigestible, not something nutritious. Bad merchants put it in milk powder to increase the nitrogen content, in response to institutional testing, children eat natural digestion and cause kidney calculi, long-term malnutrition, which leads to big-headed dolls.

Compared with melamine, more and more people began to pay attention to the amount of formaldehyde released by magic wipes. Here, Xiamen four lines will also introduce in detail.

1. said 50 times the standard, there is such a line in the screenshot that "the limit is according to the requirements of textile class II (direct contact with skin) u003C 75mgu002Fkg", that is, according to national general safety technical code for textile products GB 18401-2010 "Class B-direct contact with skin", the formaldehyde content should not exceed 75mgu002Fkg. If you test the dishcloth as underwear, this test is too casual to explain anything.

2. According to the health standard for formaldehyde in indoor air, the maximum allowable concentration of formaldehyde in indoor air is 0.08 mg/m3. The nano-sponge into a large closed beaker to measure the concentration of formaldehyde, according to the measurement method, home decoration in all materials are likely to exceed the standard. It should be noted that the concentration of formaldehyde is the concentration of formaldehyde in indoor air, not the concentration of formaldehyde in a small box.

3. Formaldehyde is a water-soluble and chemically unstable substance, which has dissipated before enrichment. Compare the convenience brought by nano sponge and the disadvantages of many cleaning appliances before (nano sponge is not easy to get moldy, and people who have used it should have noticed that stainless steel wires are harmful to tableware, sponges are very moldy, and ordinary rags are the center of fungi).

4. If melamine resin used as tableware, in fact as early as 1980, the relevant national standards have been issued. This standard has been revised twice. At present, GB9690-2009 has a requirement for formaldehyde migration. Although tableware and nano-sponges are different, melamine is the same and they are all kitchen products, before the national standard of nano-sponge is introduced, it can also be used as a reference to judge whether the nano-sponge is qualified. Rather than blindly say that formaldehyde release is substandard. There are a lot of things that contain formaldehyde, as to how much the consequences will be, or not exceed the standard.

Because of its special three-dimensional network structure, nano sponge forms nano-capillaries after wetting, which has a very strong cleaning effect, but nano sponge is a cleaning product, which is for external use and cannot be eaten.

In addition, the nano-sponge itself has good physical stability, will not melt into water, can also be fire.

However, the quality of nano sponge products in the market is uneven, so we should pay more attention to the choice of merchants. The high-quality nano sponge of regular merchants adopts improved foaming process, compression process and formaldehyde curing process, while nano sponge shows high density, no odor, good elasticity, wear resistance and durability, and strong cleaning power.