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首页> 外文期刊>Journal of Applied Polymer Science >Irradiation dose control for polymer-matrix composites fabricated by in situ curing with low-energy electron beam
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Irradiation dose control for polymer-matrix composites fabricated by in situ curing with low-energy electron beam

机译：用低能量电子束制备的聚合物 - 基质复合材料的辐照剂量控制

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摘要

The electron beam (EB) with emitting energies lower than 150 keV is applicable in in situ curing of polymer-matrix composites; however, being poor in penetration ability, it leads to significant attenuation of irradiation dose along the prepreg thickness. In this study, polymer-matrix composites were fabricated by low-energy EB irradiation curing, and the effect of dose control of double-sided irradiation was systematically investigated. Experimental results showed that laminates fabricated by single-sided irradiated prepregs were low in interlaminar shear strength (ILSS) owing to incomplete curing after being post cured at 180 degrees C for 30 min. A double-sided irradiation method which included irradiation of equal dose and different doses on both sides of the prepreg was proposed to overcome this difficulty. Analysis showed that under a total dose of 70 and 100 kGy, the ILSS results were high owing to the low curing degree of two adhesive surfaces; under a total dose of 130 and 160 kGy, laminates fabricated with different EB irradiation doses on both sides exhibited enhanced ILSS compared to those with equal dose on both sides, owing to physical adhesion and chemical crosslinking between layers. The ILSS results exhibited the largest increase of 18.9 and 60.5%, respectively, by tuning the dose differences between both sides of the prepregs. (C) 2017 Wiley Periodicals, Inc.
机译：具有低于150keV的发射能量的电子束（EB）可用于聚合物 - 基质复合材料的原位固化。然而，渗透能力差，它导致沿预浸料厚度的照射剂量的显着衰减。在该研究中，通过低能量EB照射固化制造聚合物 - 基质复合材料，系统地研究了双面辐射剂量控制的作用。实验结果表明，由于在180℃下固化后30分钟后，由于不完全固化，通过单侧照射预浸料坯制造的层压板在Interminar剪切强度（ILS）中较低。提出了一种双面辐射方法，包括预浸料坯两侧相等剂量和不同剂量的照射，以克服这种困难。分析表明，由于70和100kGy的总剂量，由于两个粘合表面的低固化程度，ILSS结果很高; 130和160千戈瑞的总剂量下，层压板具有不同的电子束辐照剂量在两侧上制造表现出增强的ILSS的那些相比具有相等剂量的两侧，由于物理粘附性和层与层之间的化学交联。通过调整预浸料坯之间的剂量差异，ILSS的结果分别显示出18.9和60.5％的最大增加。 （c）2017 Wiley期刊，Inc。

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