502 glue has certain toxicity, but the toxicity will be reduced after curing, but 502 glue is a cyano compound after all, and it will produce toxic substances after decomposition. When it encounters moist moisture, it is catalyzed, rapidly polymerized, solidified and adhered. Under the catalysis of trace water in the air, the polyaddition reaction takes place, which quickly solidifies and sticks the adherend firmly.
However, for materials that are difficult to bond, such as polyethylene, polypropylene and polytetrafluoroethylene, their surfaces need special treatment to bond. Widely used in electrical appliances, instruments, machinery, electronics, optical instruments, medical care, light industry and civil industries.
Extended data:
As long as 502 glue uses organic solvents or articles containing organic solvents (except wind oil essence and moisturizing oil), such as acetone (nail polish remover contains acetone, which can be removed as long as it is applied to 502 glue and rubbed hard).
Before use, clean the surface of the adherend to remove dust, oil stain and rust. When bonding metal, it is best to polish it first, and when bonding plastics such as PE and PP, activate the surface first.
Similar products are 40 1, 4 15 and so on. The effect is similar to that of 502, and the price is relatively expensive on the market. There is also low-priced green red glue, which is also a kind of AB glue, and the price is relatively cheap.
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