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1.Hazards of asbestos to the human body:
Asbestos is a silicate mineral fiber widely used in building materials fireproof board, and it is also the only natural mineral fiber, which has good tensile strength and good thermal insulation and corrosion resistance, and is not easy to burn, so it is widely used. There are many types of asbestos, with chrysotile asbestos content is the most abundant, the most widely used, asbestos itself is not toxic, its biggest harm comes from its fibers, which is a very small, almost invisible fiber, when these fine fibers are inhaled into the human body, they will be attached and deposited in the lungs, causing lung diseases, such as: asbestosis, pleural and peritoneal intercutaneous tumors.
These lung diseases tend to have a long incubation period (15-20 years for lung cancer and 20-40 years for mesothelioma), and in severe cases, lung cancer can occur. Asbestos has been identified as a carcinogen by the International Agency for Research on Cancer.
The U.S. Environmental Protection Agency (EPA) has restricted the use of asbestos products, such as the 1972 ordinance banning the spraying of refractory paints containing asbestos fibers.
1) Most of the thermal insulation and sound insulation materials of the ceilings and pipes in some old houses are asbestos products, and when these asbestos materials are dismantled, cut and reshaped, a large number of fine asbestos fibers will be scattered in the air. Some building materials and home decoration materials such as asbestos cement and vinyl plastic flooring can emit fine asbestos fibers.
2) Asbestos cement pipelines acting on water pipelines will cause drinking water pollution.
China: The threshold limit of chrysotile asbestos in workshop air is 2 fibers cubic centimeter (about 5 m of fiber).
United States: Weighted average concentrations of six types of asbestos, including chrysotile asbestos, asbestos dust, and amosite: 2 fibers cubic centimeter (fibers greater than 5 m).
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No, asbestos is an internationally recognized carcinogen.
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Asbestos is a natural fiber mineral, which can be split and loosened into fine soft fibers under the action of mechanical force, with high tensile strength, high strength, good heat resistance, insulation and adsorption. It is a fiber reinforced material with excellent comprehensive performance, asbestos has important uses in industry, such as: friction materials, sealing materials, thermal insulation materials, building materials (referring to asbestos cement powa, asbestos cement board), etc., as for civil use, asbestos products generally do not exist in daily life of the family, if the new house is decorated, pay attention to the ceiling board, cement board, gypsum board, do not contain asbestos.
Asbestos is a water-containing magnesium silicate mineral, does not contain toxic and harmful element components, has no carcinogenic initiative, and its carcinogenic cause is the good adsorption and short-term non-degradation of asbestos fibers, in the production and application environment of asbestos, people inhale asbestos dust for a long time, and a large amount of asbestos is deposited in the body to adsorb in the lung lobes, blocking the pores, affecting breathing, forming asbestosis, causing damage to the body.
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Asbestos is a Class 1 carcinogen and has been banned in many countries! A lot of people don't know it yet.
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Asbestos can be found everywhere in life, but it is listed as a "Class 1 carcinogen"! Many people don't think so.
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Asbestos is a "first-class carcinogen", and for the health of your family, several types of items should be careful.
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Yes, but asbestos is fireproof.
Asbestos nets in chemistry labs are just that.
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Yes, there is a kind of tile for building a house.
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Asbestos board is made of asbestos, fiberglass, clay and other materials according to the scientific formula!
It has a strong resistance to tension and is able to withstand pressure. Able to withstand about 1400 degrees Celsius! It can be used for thermal insulation, thermal insulation, boilers, steel plants, chemical plants, aluminum foundries, etc., as well as general electrical insulation!
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Generally, it is used to build a temporary shed and make a cover.
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The danger of asbestos is not that it is toxic, but that it is dust. The problem is not as terrible as you think, asbestos must have two conditions for the hazard, one is that the dust degree is very large, and the other is that it is surrounded by dust for a long time, and trace dust or occasional contact will not cause harm to the body. So you don't have to worry, just wear a mask when you try it out like you.
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Carcinogenic asbestos carcinogenicity.
Asbestos itself is not toxic, its biggest harm comes from its fibers, which are very small, almost invisible fibers to the naked eye, when these small fibers are inhaled into the human body, they will be attached and deposited in the lungs, causing lung diseases, asbestos has been identified as a carcinogen by the International Agency for Research on Cancer. Exposure (long-term inhalation) to a certain amount of asbestos fibers or metafibers can cause the following diseases: Lung cancer, gastrointestinal cancer Mesothelial carcinoma Pleural or peritoneal cancer Asbestosis Scarring of the lungs due to fibrosis of the tissues in the lungs (asbestosis) Symptoms of asbestos-related diseases tend to have a long incubation period, which may not appear until about 10 to 40 years after exposure to asbestos (15 to 20 years for lung cancer and 20 to 40 years for mesothelioma).
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The main thing is the damage to the lungs caused by dust.
It doesn't hurt until it's a long time.
The material itself is inorganic and non-toxic.
A small amount of inhalation is fine.
Don't be too nervous.
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Amphibole for sure.
Asbestos netting in school laboratories is harmful, and many countries have chosen to ban the use of this dangerous substance altogether, and some other countries are looking at the dangers of asbestos, and only Chinese middle and high school chemistry laboratories still use asbestos nets to this day.
Chrysotile asbestos is a natural fiber, and there is no great harm in itself, and the latest experiments by experts show that chrysotile asbestos is safe and harmless.
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