Properties of Reactive Hot Melt Adhesives Modified by Polyurethane Containing PEG Segment Intercalated in Sodium Montmorillonite

Abstract

: An additive of reactive hot melt adhesive (RHMA), thermoplastic polyurethanes (TPUs) was modified with neat sodium montmorillonite (Na-MMT) or Na-MMT intercalated with poly(ethylene glycol) (PEG), and their effects on the adhesion, rheological, and mechanical properties of RHMA were examined. The neat Na-MMT or Na-MMT intercalated with PEG (Na-MMT/PEG) effectively reduced the set time of RHMA, although the contents of neat Na-MMT or Na-MMT/PEG were less than 0.2 %. The increase of complex viscosity and pseudo-solid like behavior observed at low shear rate indicated that there were intimate interactions between RHMA molecules and neat Na-MMT or Na-MMT/PEG.

Preparation and performance study of a reactive polyurethane hot-melt adhesive/CS–Fe3O4 magnetic nanocomposite film/fabric

“…This ultimately improves the bond strength to afford excellent mechanical properties and high heat and solvent resistances. 22,23 At present, PUR is being widely used in many elds, such as railway transportation, 24 automobiles, 25 book binding, 26 wood processing, 27 and fabric lamination, 28 because of its advantages of high bonding strength, a wide range of performance tuning, easy construction, a high solid content, and environmental protection. 29,30 Appropriate surface modication of nanoparticles can improve their interfacial interaction and compatibility with the polymer matrix.…”