Abstract

AbstractA new type of a UV‐curable polyurethane acrylate resin based on hydroxyterminated polydimethylsiloxane (PDMS) soft segments with molecular weight 1800 and 2,4‐toluene diisocyanate (TDI)/2‐hydroxyethyl methacrylate (HEMA) hard segments were synthesized. The reactivity of 2,4‐TDI with the hydroxy groups of silanol and HEMA was discussed by means of IR measurements. The characteristic absorption peaks of the —NCO groups of 2,4‐TDI in the para‐ and ortho‐position should decline with increasing the reaction time. The measurements of fundamental physical properties of this type of UV‐curable materials had been widely studied in addition to the effects of using various reactive diluents and some pigments. This kind of resin with good optical, electrical insulating, and adhesive properties on various matrices, could be improved in chemical properties and reduced in viscosity while promoting the coating processability by mixing with various reactive diluents. The excellent adhesive properties on glass plates can be attributed to the similar structure between the PDMS soft segments and glass which makes the application in the coating industry possible.

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