Nowadays, various countries are vigorously promoting environmental protection and have carried out corresponding rectifications for heavy industries. Therefore, in order to meet national policies and guidelines, today’s adhesive glue companies are developing relatively environmentally friendly adhesive materials. What are the toxic substances in the previous adhesives? Follow the adhesive manufacturer CoolThermo Technology 1 Get up and find out!
Nowadays, people’s awareness of environmental protection is getting stronger and stronger, and the environmental protection issues of adhesives and glues have attracted more and more attention. and harmful fillers.
Volatile organic compounds
Organic solvents in solvent-based adhesives, such as free formaldehyde in trialdehyde adhesives (phenolic, urea-formaldehyde, melamine formaldehyde, etc.); styrene in unsaturated polyester adhesives; unreacted monomers in acrylate emulsion adhesives; modified acrylic acid Methyl methacrylate in ester fast-curing structural adhesives; polyisocyanates in polyurethane adhesives; sulfur dioxide in α-cyanoacrylate adhesives; thickener ammonia water in acrylate emulsions and other volatile organic compounds. Into the atmosphere, it is very harmful, and some of them also photochemically produce ozone. The ozone in the lower space pollutes the atmosphere, affecting the growth of organisms and human health. Some halogenated hydrocarbon solvents are substances that destroy the atmospheric ozone layer, some aromatic hydrocarbon solvents are very toxic and even carcinogenic, and methyl methacrylate, sulfur dioxide, ethylamine and other irritating odors are poisonous, which can be described as pollution and worsen. Atmospheric Environment.
Toxic curing agent, plasticizer
Aromatic amine curing agents are very toxic, and some can cause bladder cancer, such as m-phenylenediamine, etc., while tricresyl phosphate in plasticizers is extremely toxic, dibutyl phthalate (DBP) and phthalate Dioctyl diformate (DOP) is extremely harmful to human health. It can cause endocrine disorders after inhalation. Animal experiments have shown that it is especially harmful to the liver and kidneys, and may even cause cancer. Therefore, be extra careful when using it .
There are many kinds of fillers used in adhesive glue. For example, asbestos powder fiber is very slender, which pollutes the environment seriously and is a powerful carcinogen. Dust flies with the wind and enters the human body through the respiratory tract and capillaries, and can accumulate in the lungs, leading to lung cancer, bronchial cancer, mesothelioma, etc. The incubation period of diseases caused by asbestos is quite long, even up to 40 years. “Silent Time Bomb”.
Toxic and harmful additives
When the base resin (or rubber) for the adhesive glue is determined, the formulation and application performance of the adhesive depends to a large extent on the adjustment and modification of the used additives, but it is necessary to pay attention to the toxicity of some additives. It has been confirmed that it is carcinogenic, and BHT is still suspected of being carcinogenic, while MOCA, azobisisobutyronitrile (AIBN), and dibutyltin dilaurate have greater toxicity.
The function and application of adhesive glue have received extensive attention, but the environmental protection problems hidden in adhesives are often ignored by people. Therefore, people should take necessary protective measures when using adhesives to avoid unintended consequences due to temporary negligence. While people increase their awareness of protection, production units should create environmentally friendly green adhesives, while consumers are Desire to be able to use non-toxic and harmless adhesives as soon as possible.