Click chemistry‐assisted preparation and properties of phosphorus and nitrogen synergistic flame retardant optical resin with a high refractive index. Issue 38 (6th August 2018)

• Record Type: Journal Article
• Authors: Luo, Chaoyun; Zuo, Jiandong; Wang, Fuquan; Lin, Feng; Zhao, Jianqing; Xu, Zhijuan
• Is Part Of: Journal of applied polymer science. Volume 135:Issue 38(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-08-06
• Subjects: adhesives -- flame retardance -- optical and photovoltaic applications; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.46648
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: In this study, halogen‐free flame retardant tri(acryloyloxyethyl) phosphate (TAEP) was prepared using 2‐hydroxyethyl acrylate and phosphorus oxychloride. The chemical structure of TAEP was characterized by Fourier transform infrared and proton nuclear magnetic resonance spectrometers. The mixture of TAEP, acrylamide, and pentaerythritol tetrathioglycolate with different P, N, and S content were used to prepare flame retarding optical resin via the click chemistry curing. The curing performance, thermal stability, and flame retardant performance of the optical resins were measured by differential scanning calorimeter, thermogravimetric analyzer, vertical burning tester, and limiting oxygen index test, respectively. Additionally, the morphology of the burned residual was investigated by scanning electronic microscopy, and the refractive indices of the optical resins were measured by an Abbe Refractometer. The results strongly indicated that increasing sulfur content in resins improved their refractive indices, but deteriorated their flame retardancy. Meanwhile, the nitrogen element was helpful for the flame retardancy of the optical resin. With S N, and P contents of 3.00%, 1.00%, and 6.70 wt %, respectively, the refractive index of the optical resin reached up to 1.4987, and its flame retardancy achieved the UL‐94 V‐0 level and the LOI value of 29.3%. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2018, 135, 46648. Abstract :