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Main influencing factors of epoxidation of SBS (ESBS) adhesive
Date:2017-12-13

The main influencing factors:

The performance of ESBS and SBS is compared. After SBS epoxidation, the cohesive strength increases, the elasticity decreases, the permanent deformation becomes smaller, the viscosity of solution decreases, and the dissolution is faster in toluene, and the transparency is also improved. It is suitable for preparing adhesive with high solid content and low viscosity.

The selection of adhesive resin is different from that of SBS and ESBS because of the polarity difference between them. Very strong tackifying resin has good compatibility with ESBS and weakly polar and nonpolar tackifying resin has good compatibility with SBS; strongly polar tackifying resin with SBS and ESBS compatibility is not very different, and ESBS with good tackifying resin is polymerized rosin, rosin, maleic rosin. As with polymerized rosin tackifying resin.

(3) the bonding performance of ESBS adhesive to SBS adhesive is much better than that of SBS adhesive. The effect of ESBS adhesive is much better than that of SBS adhesive, especially when bonding rubber, polyoxyethylene and canvas, but the bonding of non-polar materials is not significant.

Because ESBS has the reactive groups such as epoxy, hydroxyl and double bonds, ESBS is made into vulcanized adhesive, which can further improve bonding strength and temperature resistance.