b**s 发帖数: 589 | 1 Ultra-High Molecular Weight Polyethylene – UHMWPE
for the cord of parachute of SHENZHOU |
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j******n 发帖数: 21641 | 2 也谈蜘蛛丝
——与玲珮玎珰商榷
作者:琴瑟琵琶
随着转基因技术的发展,国内外研究者开始着眼于蜘蛛丝的结构性能研究、
蛛丝蛋白的人工制造、蜘蛛丝的人工纺制和应用开发研究。自上一世纪九十年代
以来,国内外有关蜘蛛丝的研究文献不断涌现,国内有关综述文章也常见于杂志。
但多数文章在叙述蜘蛛丝的性能和用途时,认为蜘蛛丝的强度与芳纶1414相当、
达到Kevlar纤维的高强高模水平、用蜘蛛丝做的防弹背心性能优于芳纶,并将上
述观点相互转载。事实上,蜘蛛丝强度和模量远低于目前常用于防弹头盔和防弹
背心的芳纶1414纤维和超高分子量聚乙烯纤维,密度远高于超高分子量聚乙烯纤
维;即使不考虑目前实际工业化生产蜘蛛丝的可能性,其强度、断裂伸长率和湿
态延伸特性也将否定其在防弹装备上使用的可能性。
现代战争的战伤统计资料表明,炮弹、炸弹、地雷等武器的破片是导致士兵
伤亡的首要原因,防弹头盔、防弹衣、避雷靴等单兵战场防护装备是减少伤亡、
保存有生力量的关键性军需装备。随着高速小质量武器和高速、高能爆炸性武器
的发展和应用,高速弹丸和破片造成的火器伤变得更加复杂而严重。
高速弹丸和破片对人体的损伤包括三种形式:(... 阅读全帖 |
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u****e 发帖数: 22 | 3 research areas:
biomaterials (hard tissue replacements)
polymer and nanocomposite processing
obtained phd from the hong kong university of science and technology in 2006
, then worked as a research associate in hkust, after half a year joined a
mainland university.
any infomation will be highly appreciated!
e-mail: u****[email protected] |
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h*********l 发帖数: 615 | 4 老兄 你这是什么时候的观念啊 现在的polymer素质不是能用"塑料"简单称呼的
现在口碑好的枪里 有几个是metal frame啊 难道法国警察佩戴sig2022 美国这么多人玩glock beretta Px4 FNP 你真见过有打坏的?
我可以理解你不喜欢polymer frame 但是称呼为塑料枪有点 防弹衣还是kevlar或者UHMWPE呢 也都是高分子材料 |
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u****e 发帖数: 22 | 5 research areas:
biomaterials (hard tissue replacements)
polymer and nanocomposite processing
obtained phd from the hong kong university of science and technology in 2006
, then worked as a research associate in hkust, after half a year joined a
mainland university.
any infomation will be highly appreciated!
e-mail: u****[email protected] |
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d*****h 发帖数: 1892 | 6 【作者】Dumbleton JH, D'Antonio JA, Manley MT, Capello WN, Wang A.
【文题】The basis for a second-generation highly cross-linked UHMWPE
【期刊名,年份,卷(期),起止页码】Clin Orthop Relat Res. 2006 Dec;453:265-
71.
【全文链接】http://www.ncbi.nlm.nih.gov/pubmed/17016228
【求助者联系方式】c**********[email protected]
不好意思,麻烦了,多谢! |
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b**s 发帖数: 589 | 8 I am watching CCTV online, no link, just introduced by a cute girl on TV
Long live China!!!!!!!!
long live Polymer !!!!!!! |
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u****e 发帖数: 22 | 9 research areas:
biomaterials (hard tissue replacements)
polymer and nanocomposite processing
obtained phd from the hong kong university of science and technology in 2006
, then worked as a research associate in hkust, after half a year joined a
mainland university.
any infomation will be highly appreciated!
e-mail: u****[email protected] |
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