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首页> 外文期刊>Journal of Applied Polymer Science >Effects of the electron-beam absorption dose on the glass transition, thermal expansion, dynamic mechanical properties, and water uptake of polycardanol containing epoxy groups cured by an electron beam
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Effects of the electron-beam absorption dose on the glass transition, thermal expansion, dynamic mechanical properties, and water uptake of polycardanol containing epoxy groups cured by an electron beam

机译：电子束吸收剂量对电子束固化的含环氧基聚腰果酚的玻璃化转变，热膨胀，动态力学性能和吸水率的影响

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摘要

In this study, the glass transition, thermal expansion, dynamic mechanical properties, and water-uptake behaviors of diepoxidized polycardanol (DEPC) cured by electron-beam radiation in the presence of cationic photoinitiators were investigated. How the type and concentration of cationic photoinitiators and the electron-beam absorption dose influenced the properties of the cured DEPC was also studied. Two types of cationic photoinitiators, triarylsulfonium hexafluorophosphate (simply referred to as phosphate type or P-type) and triarylsulfonium hexafluoroantimonate (simply referred to as antimonate type or Sb-type), were used. Electron-beam absorption doses of 200, 300, 400, and 600 kGy were applied to the uncured diepoxidized cardanol (DEC) samples, respectively. It was revealed that the Sb-type photoinitiator was preferable to the electron-beam curing of DEC; this led to a lower photoinitiator concentration and/or a lower electron-beam absorption dose compared to that in the phosphate-type photoinitiator. As a result, the variations in the glass-transition temperature, coefficient of thermal expansion, storage modulus, and water uptake of the cured DEPC were quite consistent with each other. We found that the optimal conditions for the enhanced properties of DEPC by electron-beam curing were an Sb-type photoinitiator at 2 wt % and an electron-beam absorption dose of 600 kGy. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42570.
机译：在这项研究中，研究了在阳离子光引发剂存在下通过电子束辐射固化的二环氧聚腰果酚（DEPC）的玻璃化转变，热膨胀，动态力学性能和吸水行为。还研究了阳离子光引发剂的类型和浓度以及电子束吸收剂量如何影响固化DEPC的性能。使用两种类型的阳离子光引发剂，三芳基ulf六氟磷酸盐（简称为磷酸盐型或P型）和三芳基ulf六氟锑酸盐（简称为锑型或Sb型）。分别将200、300、400和600 kGy的电子束吸收剂量应用于未固化的二环氧腰果酚（DEC）样品。结果表明，Sb型光引发剂比DEC的电子束固化更合适。与磷酸盐型光引发剂相比，这导致较低的光引发剂浓度和/或较低的电子束吸收剂量。结果，固化的DEPC的玻璃化转变温度，热膨胀系数，储能模量和吸水率的变化彼此非常一致。我们发现，通过电子束固化提高DEPC性能的最佳条件是2 wt％的Sb型光引发剂和600 kGy的电子束吸收剂量。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42570。

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