| 内表面掺硅聚苯乙烯空心微球初步研究 |
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| 引用本文： | 谭福利,赵剑衡,李永池.内表面掺硅聚苯乙烯空心微球初步研究[J].强激光与粒子束,2004,16(8):0-980. |
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| 作者姓名： | 谭福利 赵剑衡 李永池 |
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| 作者单位： | 1.中国工程物理研究院 激光聚变研究中心,四川 绵阳 621 900 |
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| 基金项目： | 国家自然科学基金资助课题(10272097)，国家863计划项目资助课题 |
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| 摘 要： | 靶丸内表面掺杂诊断元素可以为内爆压缩界面的研究提供必要的手段。以二甲基二乙氧基硅烷为原料，利用乳液微封装技术和界面聚合技术可以实现单一内表面掺硅的空心聚苯乙烯微球的制备。X光照相和X能谱分析表明:内表面掺硅量比外表面高出2~3个数量级。均匀内表面掺硅层的厚度小于0.3μm，掺杂层厚度越小，均匀性越好。
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| 关 键 词： | 掺硅 聚苯乙烯 空心微球 |
| 文章编号： | 1001-4322(2004)08-0977-04 |
| 收稿时间： | 2003/3/18 |
| 修稿时间： | 2003年3月18日 |
Probability analysis on thermal fracture of the internally pressured cylinder shell irradiated by laser |
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| TAN Fu-li.Probability analysis on thermal fracture of the internally pressured cylinder shell irradiated by laser[J].High Power Laser and Particle Beams,2004,16(8):0-980. |
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| Authors: | TAN Fu-li |
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| Affiliation: | 1.Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China |
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| Abstract: | When a laser beam irradiates a cylinder shell, the irradiated area becomes softer and will destroy cylinder shell. On the basis of early work, 3-D solid element is adopted to simulate the stress of internally pressured cylinder shell irradiated by laser. The properties of material varying with temperature are also taken into account in the computation. It is analyzed by numerical simulation that the ratio of circumferential stress and strength of outer shell along axis is affected by irradiation time, laser beam spot radius and power . With the computations, it concludes that the crack will initiate from the beam spot edge at the conditions of short heating time and large inner pressure, the smaller beam spot will easily crack at the condition of the same laser power, and that the ratio of stress and strength will vary with the laser heating time. |
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| Keywords: | Laser Internally pressured cylinder shell Initiation of crack Thermal fracture Thermal stress |
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