Stripping and mechanical properties of water-based polyacrylate stripper and its application in art masking fluid
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ORIGINAL RESEARCH
Stripping and mechanical properties of water‑based polyacrylate stripper and its application in art masking fluid Xiaorong Wang1 · Guoyan Ma2 · Hongfei Ma3 · Zhe Wu4 Received: 3 May 2020 / Accepted: 21 September 2020 © Iran Polymer and Petrochemical Institute 2020
Abstract A long chain polyacrylate which was a functional composition of a new water-based stripper (WLOAC) for art masking fluid was prepared using azobisisobutyronitrile under the solution polymerization method. The WLOAC was mixed with natural latex to form an art masking fluid (WACN). The optimized preparation conditions, i.e., reaction time 4 h, reaction temperature 80 °C, and stirring rate 200 r/min were selected by the orthogonal experimental design method. The proton ( 1H NMR) and carbon (13C NMR) nuclear magnetic resonance spectra of polyacrylate were recorded. There were no peaks at 6.5–5.5 ppm in 1H NMR and at 128.3 ppm and 130.2 ppm in 13C NMR, which indicated that the radical polymerization was indeed occurred. The rheological properties of the WLOAC emulsions were investigated by a rheometer, and the rheology tests indicated that the WLOAC emulsion is a pseudoplastic fluid. The surface tension, peel strength, tensile strength and scanning electron microscopy (SEM) of WACN were all determined. The results showed that the surface tension decreased by the addition of WLOAC. The peel strength decreased from 0.58 to 0.29 N/mm with WLOAC increased from 5 to 12.5 wt%. With the addition of WLOAC, the tensile stress increased from 10.56 to 22.36 MPa. The SEM results showed that WACN coatings could be detached without causing any damage to the paper substrate. Keywords Stripper · Rheological property · Emulsion stability · Mechanical strength · Stripping mechanism
Introduction A system for providing temporary protective coatings onto surfaces of substrates is called stripper [1, 2]. It has been popularly used in many fields, such as metals, building construction elements, and glasses [3, 4]. More particularly, the stripper emulsions could be dried and formed a protective coating on the surface of the substrate. The protective * Xiaorong Wang [email protected] * Guoyan Ma [email protected] 1
College of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang 712000, Shaanxi, China
2
College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, Shaanxi, China
3
Department of Chemical Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
4
College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, Shaanxi, China
coating could be controllably removed from the substrate surfaces [5]. Xie et al. [6] tested various kinds of coatings which were fabricated on titanium and titanium alloy substrates by different methods, such as electrochemical, chemical and physical treatments. They also proposed a reasonable detachment mechanism from titanium substrates by scanning electron microscopy (SEM) tech
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