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1. For some synthetic resins polymerized with non-toxic monomers, such as polyethylene, polypropylene, etc., there will be some odors at high temperatures, but odors do not mean toxic. This is the common sense of chemists (for example, toilets are generally very It smells bad, but it can’t be said that the toilet is full of poisonous gas), so you can use it at ease regardless of high temperature or cooling (fillers such as antioxidants, refreshing agents and lubricants are generally non-volatile non-toxic substances);
2. The second type is synthetic resins polymerized with toxic monomers, such as polyvinyl chloride, ABS, etc. A small amount of monomers may escape at high temperatures during plastic processing. These monomers may be a little toxic, so plastic processing plants There will be powerful exhaust devices, but this is only in the factory. Once cooled, the monomers will be firmly bound together, so there is no need to worry about the continuous release of toxic substances.
It should be reminded that because of the similar compatibility principle, plastic products are not suitable for long-term storage of oil and alcohol organics. At the same time, the biggest problem with plastics (including artificial rubber, synthetic fibers, etc.) is that they are too stable and difficult to degrade in nature, especially It is a polymer compound containing benzene ring (such as styrene, ABS, polyester), which is more stable. If the combustion method is used, toxic and harmful substances such as dioxins will appear.