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Zhang L.,Harbin Institute of Technology | Cao Y.,Shanghai Zeafee Digital Inkjet Composite Material Co. | Wang L.,Harbin Institute of Technology | Shao L.,Harbin Institute of Technology | Bai Y.,Harbin Institute of Technology
Journal of Applied Polymer Science | Year: 2016

In the area of pressure sensitive adhesives (PSAs), corona treatment or other preprocessing on the carrier was commonly utilized for the enhancement of the interaction between the adhesive layer and the carrier, with complicated procedures and operations. To make it easy, one-pot emulsion polymerization using n-butyl acrylate, isobornyl methacrylate (IBOMA), 2-hydroxyethyl acrylate and acrylic acid was conducted in the presence of a reactive emulsifier SR-20 to obtain a reinforced adhesive tape. First, the emulsion had good stabilities, especially freeze-thaw stability, which was helpful to the fabrication of PSAs. Second, IBOMA increased the binding strength between adhesive layer and adherend. The properties of the final tapes well fulfilled the requirements of this areas, such as that the 180 peel strength of 125.9 N/m when coated on non-corona surfaces, the tack of 19 #, and the shear holding time of more than 100 h. Third, the tapes produced using the above emulsion could be removed many times, with no PSAs residue on the adherend even when coated on untreated PP, which showed the potential of recycling and environmental protection. Thus, these properties make the polyacrylate emulsion have great potential for practical applications. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42886. © 2015 Wiley Periodicals, Inc. Source


Zhang L.,Harbin Institute of Technology | Cao Y.,Shanghai JiaoTong University | Cao Y.,Shanghai Zeafee Digital Inkjet Composite Material Co. | Wang L.,Harbin Institute of Technology | And 2 more authors.
RSC Advances | Year: 2014

Pressure sensitive adhesives (PSAs) are materials that can adhere strongly to solid surfaces under a light contact pressure for a short time. Soap-free emulsion polymerization of 2-ethylhexyl acrylate and n-butyl acrylate has been performed in the presence of a reactive emulsifier SR-10 to obtain high adhesion properties of PSAs. The particle size distribution was quite narrow with an average diameter of 137 nm. The FT-IR spectrum showed that the CC bonds contained in the monomers disappeared during the reaction. The DSC result showed that all the monomers were well copolymerized. The 180° peel strength could reach 183.2 N m-1 when SR-10 was 2 wt% and the ratio of 2-EHA to BA was 4 to 1. The tack was 13 #. The shear holding time was more than 100 h. The removable PSA tapes produced from the resulting soap-free emulsion showed good adhesion properties and stabilities, which are suitable for practical applications. This journal is © the Partner Organisations 2014. Source


Zhang L.,Harbin Institute of Technology | Cao Y.,Shanghai Zeafee Digital Inkjet Composite Material Co. | Wang L.,Harbin Institute of Technology | Shao L.,Harbin Institute of Technology | Bai Y.,Harbin Institute of Technology
RSC Advances | Year: 2015

A novel porous adhesion material for digital inkjet printing with absorbency for eco-solvent ink and removable adhesion has been successfully prepared by a simple, robust and cost-effective method. There was no traditional emulsifier with low molecular weight adopted in the poly(n-butyl acrylates) emulsion for the preparation of the porous material. Due to the properties of this reactive emulsifier, there was no free emulsifier left after the polymerization, thereby reducing the drawbacks associated with traditional emulsifiers. The porous material possesses high shear strength, moderate peel strength and low tack properties suitable for adhesion and could be removable many times, which offered a new method for recycling. Since the novel porous material can be utilized many times and have potential for recycling, we believe that this material would be environmentally friendly. Additionally, the absorbency of the eco-solvent ink created a suitable platform for digital inkjet printing based on the novel porous material, with resistance to different atmospheres, like acid, base, oxidant, and many organic solvents. © The Royal Society of Chemistry 2015. Source

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