Journal of Textile Research ›› 2016, Vol. 37 ›› Issue (3): 82-86.
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Abstract:
In order to study the effect of UV curing on the printing performance, polyurethane was synthesized from isophoronediisocyanate and polyethylene glycol as the main raw material, then the pentaerythritol triacrylate was employed as blocking agent to synthesis polyurethane acrylate(PUA). The structure of PUA was analyzed by FTIR. The PUA, monomer and photoinitiator were mixed and then applied in fixation of pigment printing via UV irradiation. The effects of component content and UV irradiation time on the printing fabric fastness, K/S value, hand feeling and the printed pattern definition were studied. It indicated that under the condition of 25% PUA, 6% monomer, 5% photoinitiator, UV irradiation 60 s, the washing fastness, dry and wet rubbing fastness of printed fabric can reach 5 grade, 4-5 grade and 3 grade, respectively. The printing patterns also show excellent definition.
Key words: polyurethane acrylate, UV curable, pigment printing, definition
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