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首页> 外文期刊>Journal of Applied Polymer Science >Study of gamma-ray radiation effects on series of bisphthalonitrile resins: Thermomechanical, mechanical, and thermal properties
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Study of gamma-ray radiation effects on series of bisphthalonitrile resins: Thermomechanical, mechanical, and thermal properties

机译：海藻腈树脂系列γ射线辐射效应研究：热机械，机械和热性能

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The bisphthalonitrile (PN) thermosets series (poly(Baph), poly(Bafph), and poly(Bzph)) were prepared and subjected to 100 and 500 kGy gamma-ray irradiation dose from cobalt-60 (Co-60) as a source. The main objective of this present study was to investigate the effects of gamma irradiation on the chemical structure, thermomechanical, mechanical, and thermal stabilities, which were studied by using a Fourier transform infrared (FTIR), dynamic mechanical analysis, bending test, and thermogravimetric analysis, respectively. The PN resins characteristics bands, namely, nitrile, triazine ring, and phthalocyanine, were not affected on gamma-ray irradiation. However, remarkable changes were observed in the chemical structures of benzene, alkyl and-CF3, which indeed slightly declined the thermal stabilities, thermomechanical and flexural properties. The decrease in properties could be ascribed to the scission of molecular chains and rupture of chemical bonds of PN resin as confirmed by the FTIR. The poly(Bafph) showed a maximum decline in the thermal stabilities and mechanical properties due to the existence of-CF3 in the polymer skeleton, which could not be crosslinked again once scission occurs under radiation. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48313.
机译：制备海藻腈（PN）热固性串系列（Poly（Baph），聚（BaFPH）和聚（BZPH）），并从钴-60（CO-60）中为100％和500吨底胶射线照射剂量作为源。本研究的主要目的是探讨γ辐射对化学结构，热机械，机械和热稳定性的影响，该抗傅里叶变换红外线（FTIR），动态机械分析，弯曲试验和热重试验研究分析分析。 Pn树脂特性带，即腈，三嗪环和酞菁，对γ射线照射不受影响。然而，在苯，烷基和CF3的化学结构中观察到显着变化，这确实略微下降了热稳定性，热机械和弯曲性能。如FTIR证实，可以归因于分子链的分子链的分泌和PN树脂的化学键破裂。聚（BAFPH）显示出由于聚合物骨架中的CF 3存在的热稳定性和机械性能的最大下降，这在辐射下释放时不能再次交联。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,48313。

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