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首页> 外文期刊>Journal of Applied Polymer Science >Microgel formation and thermo-mechanical properties of UV-curing unsaturated polyester acrylates
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Microgel formation and thermo-mechanical properties of UV-curing unsaturated polyester acrylates

机译：紫外光固化不饱和聚酯丙烯酸酯的微凝胶形成和热机械性能

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摘要

The effect of internal and terminal unsaturation on the properties of the acrylated polyester films was investigated. Four types of acrylated polyester resin were prepared using adipic acid, maleic anhydride, neopentyl glycol, trimethylolpropane, and acrylic acid. Terminal and internal double bond content as well as branching was adjusted by the molar quantities of trimethylolpropane and maleic anhydride, respectively. A reactive diluent, trimethylolpropane triacrylate (TMPTA), was also used. A three-factor, three-level Box-Behnken design was used to investigate complex nonlinear relationships. Dynamic mechanical, fracture toughness, and tensile properties were evaluated with respect to the amount of terminal and internal unsaturation, and reactive diluent concentration. It was found that microgel formation extensively affects the final UV-cured film properties. Small quantities of microgels function as micro-support units, whereas high extent of microgelation causes phase separation through cluster formation and hence, decreases the mechanical properties. It is essential to control the extent of microgelation and phase separation to optimize product performance. (c) 2007 Wiley Periodicals, Inc.
机译：研究了内部和末端不饱和度对丙烯酸酯化聚酯薄膜性能的影响。使用己二酸，马来酸酐，新戊二醇，三羟甲基丙烷和丙烯酸制备四种类型的丙烯酸酯化聚酯树脂。末端和内部双键的含量以及支化分别通过三羟甲基丙烷和马来酸酐的摩尔量来调节。还使用了反应性稀释剂三羟甲基丙烷三丙烯酸酯（TMPTA）。三因素，三级Box-Behnken设计用于研究复杂的非线性关系。关于末端和内部不饱和度的量以及反应性稀释剂浓度，评估了动态机械性能，断裂韧性和拉伸性能。发现微凝胶的形成广泛地影响最终的UV固化膜的性能。少量的微凝胶充当微载体单元，而高程度的微凝胶化会通过团簇形成引起相分离，从而降低机械性能。控制微凝胶化和相分离的程度以优化产品性能至关重要。 （c）2007年Wiley Periodicals，Inc.

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