Application of Silicone/Polyacrylate Adhesive in Paint Printing

The wet rubbing fastness of polyacrylate adhesives made of paint printing pastes can only reach 23, and the wet rubbing fastness is lower when the amount of adhesives is less and the amount of paint is high. To increase the rubbing fastness, some silicone softeners are added in the colorant, but the effect is not obvious. At present, the wet friction fastness improver is introduced on the market. When the amount is high, the wet rub fastness can be improved by 0.5. They are smoothing agents that can reduce the coefficient of friction of the film, such as the effect of silicone is obvious, but the price is expensive. Second, the grafting of silicone molecules onto the acrylamide groups in the binder molecule also has some effect. However, reactive groups are attached to the amino silicone oil molecular chain, which is connected to the binder during baking. Not yet commercialized. Recently, some progress has been made in the use of interpenetrating network polymers to improve the wet rub fastness. The silicone/polyacrylamide IPN can make polyacrylates not stick back, do not absorb dust, and can also improve their weather resistance, abrasion resistance, and resistance. Chemical corrosion and other properties. Using polyorganosiloxane / polyacrylate made of IPN, or anionic ring-opening polymerization synthesis of reactive polysiloxane, and acrylic monomers copolymerization. Copolymerization with acrylates, Osi's newly developed acrylate-silicone-polyether terpolymer, can reduce the coefficient of friction - thick, with silicone modified polypropylene ester has achieved certain results, I hope the additives manufacturers Based on this, we can develop adhesives with excellent wet fastness.



Source: China Washing & Dyeing Industry Information Center