Glue is poisonous. Glue contains volatile harmful chemicals, such as some harmful gases such as benzene compounds and formaldehyde. Long-term and large-scale contact is definitely harmful to the body and has a great impact on fertility and blood system. The commonly used glue, in daily life, emits extremely small amounts of harmful substances and will not cause serious harm to the human body. Don't worry too much.

Matters needing attention of glue

Most of the commonly used adhesives are polar adhesives with strong hydrophilicity. When the bonded joint is in a high humidity environment for a long time, the adhesive will absorb water and greatly reduce the bonding strength. The hygroscopicity of adhesive is related to the macromolecular structure of its polymer. The more cyano and amino groups in the molecule, the greater the moisture absorption, the more methyl and ethyl groups, the greater the molecular crosslinking density, and the smaller the moisture absorption.

Among the commonly used adhesives, cyanoacrylate adhesive, anaerobic adhesive, nylon adhesive, amino resin and other adhesives have high moisture absorption capacity and are not suitable for use in humid environment.