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首页> 外文期刊>Journal of Spacecraft and Rockets >Study on Damage Effects of Methyl Silicone Rubber Induced by Proton Radiation
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Study on Damage Effects of Methyl Silicone Rubber Induced by Proton Radiation

机译：质子辐射对甲基硅橡胶的损伤作用研究

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摘要

The damage behaviors of methyl silicone rubber induced by radiation of protons with 150-keV energy were studied. The surface morphology, tensile strength, Shaw hardness, cross-linking density, and glass temperature were evaluated. Positron annihilation lifetime spectroscopy and infrared attenuated total reflection analysis were carried out to reveal the damage mechanism of the rubber. The results show that the tensile strength, Shaw hardness, cross-linking density, and glass temperature of the silicone rubber increase and then decrease with increasing radiation fluence. Analysis indicated that all of the annihilation span T_3 and the intensity I_3 of the longest lifetime positrons spouses, as well as the free volume V_f, decreased with increasing radiation fluence, under lower radiation fluences, and then increased slowly after the fluence 10~(15) cm~(-2). The proton radiation would mainly induce cross-linking reactions in the silicon rubber when the fluence is lower, whereas degradation becomes dominant as the fluence increases.
机译：研究了150keV能量的质子辐射引起的甲基硅橡胶的损伤行为。评价了表面形态，拉伸强度，肖氏硬度，交联密度和玻璃温度。进行了正电子an没寿命光谱和红外衰减全反射分析，揭示了橡胶的损伤机理。结果表明，随着辐射通量的增加，硅橡胶的拉伸强度，肖氏硬度，交联密度和玻璃温度先升高后降低。分析表明，寿命最长的正电子配偶的of灭跨度T_3和强度I_3以及自由体积V_f随着辐射通量的增加而降低，在辐射通量较低的情况下，并在通量10〜（15）之后缓慢增加）cm〜（-2）。当注量较低时，质子辐射将主要在硅橡胶中引起交联反应，而当注量增加时降解将占主导。

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