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Often in the environment where plastic is heated and melts odors, it will cause great harm to the human body. The toxic substances in plastic can damage human nerves, cause dizziness, dizziness, and even cause cancer in severe cases.
Plastics are generally polyethylene, polypropylene, polyvinyl chloride and other compounds, which contain a large number of toxic and harmful chemicals. After combustion, it is easy to release toxic gases, which will cause great harm to the human body. In addition, dioxins can be formed from the combustion of plastics.
Dioxins, on the other hand, are carcinogenic and can cause damage to the respiratory tract and circulatory system if inhaled in large quantities for a long time.
Substances in plastics that are harmful to the human body:
Vinyl chloride: After being absorbed through the gastrointestinal tract, some of the monomers are excreted through the respiratory tract and the other part is broken down into ethanol and monochloroacetic acid. It can bind to deoxyribonucleic acid (DNA) in the human body and have toxic effects on the nervous system, bones and liver, which can lead to the occurrence of human angiosarcoma.
Formaldehyde: It is the original plasma poison of human cells, acetaldehyde can damage human nerves, cause dizziness, dizziness, and even cancer.
Polyethylene: Polyethylene is composed of hydrocarbons, which are fully burned to produce carbon dioxide and water, and insufficient combustion to produce carbon particles (black smoke) and carbon monoxide. Polyethylene is flammable.
Polyvinyl chloride: Polyvinyl chloride is composed of hydrocarbon and chlorine elements, which produce HCl when burned, and after being dissolved in water, it is generally called hydrochloric acid. PVC is non-flammable.
If it is burned at high temperatures, polyethylene operation has less impact on human health, while polyvinyl chloride is harmful to health, and it is best to wear a mask.
In general, it is not polyethylene and polyvinyl chloride themselves that have the greatest impact on human health, but plastic additives such as pigments. Many additives cause direct harm to the human body, and after high temperature volatilization or chemical decomposition, the harm may be even greater.
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Silane coupling agent is a class of organosilicon compounds containing two different chemical groups in the molecule at the same time, and its classic product can be represented by the general formula Ysix3. where y is a non-hydrolyzed group, including a chain alkenyl group (mainly vinyl), and a hydrocarbon group with functional groups such as cl, nh2, sh, epoxy, n3, (methyl)acryloyloxy, isocyanate group, etc., that is, a carbon functional group; X is a hydrolyzable group, including Cl, OM, OET, OC2H4OC3, OSIME3, and OAC. Due to this special structure, it has both reactive groups that can chemically bind to inorganic materials (such as glass, silica sand, metals, etc.) and reactive groups that chemically bind to organic materials (synthetic resins, etc.) in its molecules, which can be used for surface treatment.
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What is the temperature you have to withstand below 300 There is no problem.
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Excuse me, messy Heat-resistant? 560 is the better in silanes, and 501 is the higher high temperature resistance in titanate.
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What do you want to do It's not high temperature resistant and easy to use Above 300 Consider 401 and 501 They are used more in coatings.
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It depends on what material you're working with, but for most inorganic fillers such as metals and metal oxides, you can use the commonly used:
Silane coupling agent, such as A-171, A-172, A-174, these are the grades of United Carbon Company, corresponding to the Chinese grades, KH550, KH560, KH570, the specific chemical formula and parameter input grades can be searched on the Internet; Other coupling agents such as titanate and aluminate can also be used, but silanes are more suitable.
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SI-69 doesn't explain, I can't explain it, I really want to make people laugh on the second floor, and I do the rubber treatment, of course, it's SI-69.
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