End-Cap Modified Unsaturated Polyesters With Low Styrene Emission

International Conference on Computer Information and Automation Engineering

计算机科学;运输工程

Liu, S.^1 ; Chen, J.R.^2 ; Zhang, Y.^1

Key Laboratory of Special Functional Polymers and Related Technology of Ministry Education, School of Materials Science and Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai

200237, China^1

Shanghai Zhongzhi Chemical Technology Co., Ltd, Nanyangwan Road 1068, Shanghai

201612, China^2

关键词: End caps;    Fourier transform infra red (FTIR) spectroscopy;    Gel permeation chromatography (GPC);    Gel point;    Low molecular weight;    Styrene emission;    Unsaturated polyester;    Unsaturated polyester resin;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/359/1/012012/pdf
DOI  :  10.1088/1757-899X/359/1/012012

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

A benzyl end-cap-unsaturated polyester resin (BP-UPR) with low styrene emission was synthesized. The structure of BP-UPR was characterized by Fourier transform infrared (FT-IR) spectroscopy. According to gel permeation chromatography (GPC) measurement, the BP-UPR has a relative low molecular weight (Mn=1754) and narrow polydispersity of 1.68. The styrene content of BP-UPR is only 25.1%, 8.3% lower than that of a commercial unsaturated polyester resin (C-UPR) with similar viscosity. The styrene emission of BP-UPR and C-UPR was compared by Luong-Walewski method. At the gel point (17 minutes), the styrene emission of BP-UPR is only 38.9g/m2, 15.9% lower than that of C-UPR. After curing for 2 hours, the total styrene emission of BP-UPR is only 62.5 g/m2, which is 48.0% lower than that of C-UPR.