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Effect of Acrylic Content on the Properties of the Polyurethane/Polyacrylate Composite Emulsion
Guoyan Ma,Yiding Shen,Ruimin Gao,Xiaorong Wang 한국고분자학회 2017 폴리머 Vol.41 No.1
A polyurethane/polyacrylate (PUA) composite emulsion was synthesized by using polyurethane (PU) as seeds with soap-free emulsion polymerization, in which methyl methacrylate (MMA) and butyl acrylate (BA) were used as main acrylic monomers. The effect of acrylic contents and “stiff” and “soft” weight ratio of acrylic monomers on the properties of the films were investigated. The Fourier transform infrared (FTIR) results showed that acrylic monomers were involved in the emulsion copolymerization. The optimum composition of PUA composite formation was obtained when the polyacrylate (PA) content was 20%, in which the weight ratio of MMA and BA was 2/1. With the increment of PA content, the decomposition temperature increased.
Final report on APMP regional key comparison APMP.L-K6: Calibration of ball plate and hole plate
Takatsuji, Toshiyuki,Eom, Taebong,Tonmueanwai, Anusorn,Yin, Ruimin,van der Walt, Floris,Gao, Sitian,Thu, Bui Quoc,Singhal, R P,Howick, Eleanor,Doytchinov, Kostadin,Valente de Oliveira, José,Carl Springer-Verlag 2014 METROLOGIA -BERLIN- Vol.51 No.-
<P>The results of the APMP key comparisons on ball plate and hole plate (APMP.L-K6.2007) are reported. Both transfer standards were provided by NMIJ, Japan. The ball plate standard is 532 mm by 532 mm in nominal dimension and 25 spheres are embedded. Thirteen National Metrology Institutes (8 from APMP, 5 from other Regional Metrology Organizations) participated in the ball plate measurement comparison. The hole plate standard is 550 mm by 550 mm in nominal dimension and there are 44 cylindrical holes in it. Nine National Metrology Institutes (5 from APMP, 4 from other Regional Metrology Organizations) participated in the hole plate measurement comparison. The comparison started in May 2006 and finished in October 2008. The participants used different measurement techniques which were used for their routine calibration services. For determining the key comparison reference values, a two-dimensional coordinates-based analysis was performed. The measurement results on the ball plate show good agreement in ten out of thirteen participants. In contrast, those on the hole plate are in agreement for five out of nine participants.</P><P>Main text.To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.</P><P>The final report has been peer-reviewed and approved for publication by the CCL, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>
Jiarong Li,Chang Li,Lilong Yang,Zhe Liu,Ruimin Gao,Jianshe Zhao 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.109 No.-
In order to obtain the clean fuel, two types of inorganic–organic hybrid catalysts with core–shell structureshave been prepared as efficient and reusable catalysts for oxidative desulfurization, in which ionicliquids (1-vinylimidazole and 4-vinylpyridine) were grafted and polymerized on the surface of siliconthrough free radical polymerization and polyoxometalates (H3PMo6W6O40, attributed as PMoW) wasfunctionalized on the surface of silicon. The as-prepared catalysts were characterized by FT-IR, UV–Vis,N2 adsorption–desorption, SEM and TEM. It could be proved that these two types of catalysts show highsulfur removal efficiency over 98% in the model fuel with 2000 ppm of DBT under mild reaction condition. The effective catalytic abilities of synthesized catalysts are mainly attributed to the hierarchical functionalcore–shell structures. The successful preparation of the PILs-polyoxometalates based catalysts withhigh catalytic activities could provide the demonstration of the application of polymer in oxidativedesulfurization.