Epoxy resin adhesive is relatively viscous. To facilitate operation, thinner can be added to dilute it. There are two types of diluents: inert diluents and reactive diluents. Adhesive solvents can be used as diluents. When the solvent is used as a diluent, it does not participate in the curing reaction. The diluent that will eventually evaporate from the adhesive layer is called an inert diluent. A solvent that has strong solubility and is easy to evaporate from the adhesive should be selected to prevent the solvent from being trapped in the cured adhesive layer and reducing the bonding strength. But it is best not to use solvents for room temperature curing adhesives. In addition, low-toxicity solvents should be selected as much as possible to avoid harm to the environment and human body. Commonly used inert diluents include dioctyl phthalate, dibutyl phthalate, triethyl phosphate, etc.; solvents include acetone, methyl ethyl ketone, toluene, xylene, methyl ethyl ketone, cyclohexanone, n-butanol, etc. .
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