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China successfully develops/manufactures 1 of the strongest fibres (F-12)

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我国产F-12高强有机纤维
China produces F-12 high-strength organic fibers

2013-08-05
mil.sina.cn

original.jpg

F-12纤维
F-12 Fiber

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F-12高强度纤维可纺织防弹衣
F-12 bullet proof vests
above credits: nmgnews and sina

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PLA QGF02 helmet
Credit: fanglun.com


据新华社呼和浩特8月2日电,记者从中国航天科工集团第六研究院四十六所获悉,由这个所研发的F-12高强有机纤维技术近期经过国内权威专家组鉴定达到国际先进水平,并且已实现产业化生产,这预示着我国有望彻底打破发达国家对高强纤维的垄断地位。

  作为世界三大高性能纤维之一的芳纶类纤维是重要战略物资,在国防、航空、航天及民用领域应用广泛,目前只有美、日、俄等少数国家实现工业化生产。

  中国工程院院士蒋士成、哈尔滨工业大学教授黄玉东等专家鉴定认为,年产50吨F-12纤维产业化生产线投产后,可稳定生产多种规格的F-12纤维,产品性能与国外同类纤维相当,纤维稳定性能够满足航空、航天用户要求,可更广泛应用于能源、交通、建筑等工程领域。
  
  F-12高强有机纤维属于芳纶类纤维,显黄褐色,有明显的金属光泽,具有高比强度、高比模量、低密度等优异性能,也是当前高新技术纤维领域最具代表性的品种之一。

  F-12纤维拉伸强度平均可达4.6GPa,弹性模量可达110~170GPa,伸长率3.5~4.5%,密度1.44g/Cm3,达到国内领先水平。F-12纤维强度是同样直径钢丝的8-10倍,韧性是同样直径钢丝的3倍,而重量仅为同样直径钢丝的1/5左右。

  乍看上去,一根根F-12高强有机纤维就像纺织女工手中的绣线,但它们却是纤维家族中的大力士。一根拇指粗细的由F-12高强有机纤维拧成的绳子可以吊起46吨的重物,同等粗细钢丝绳却只能吊起8吨的重物。

  F-12高强有机纤维应用在固体火箭发动机壳体上以增加射程,还应用于直升飞机的尾桨叶,飞艇、直升飞机的外蒙皮。与此同时,F-12高强有机纤维也可以制成升降机缆绳、防弹衣等物品。



According to Xinhua News Agency, Hohhot, August 2 -, Reporters from the China Aerospace Science and Industry Group VI Institute forty-six was informed by the research and development of the F-12 high-strength organic fiber technology has recently undergone a domestic authoritative expert team reached the international advanced level and has achieved industrial production, which indicates that China developed countries is expected to completely break the monopoly of high-strength fibers.

As one of the world's three high performance fibers aramid fibers is an important strategic material, in the defense, aviation, aerospace and civilian fields are widely used, only the United States, Japan, Russia and a few other countries to achieve industrial production.

Chinese Academy of Engineering, Jiang Shicheng, Harbin Institute of Technology, Professor Huang Yudong and other experts believe that an annual output of 50 tons of F-12 production line fiber industry, it can produce a variety of specifications stabilize F-12 fibers, fibers with similar foreign product performance considerably, fiber stability to meet the aviation, aerospace user requirements, can be more widely used in energy, transportation, construction and other engineering fields.

F-12 high-strength organic fibers are aramid fibers, which was brown, with a clear metallic luster, high specific strength, high modulus, low density, excellent performance, but also the most representative of the current field of high-tech fiber varieties world.

F-12 average fiber tensile strength of up to 4.6 GPa, the elastic modulus of up to 110 ~ 170 GPa, elongation of 3.5 to 4.5%, density 1.44g/Cm3, reached domestic leading level. F-12 fiber strength is 8-10 times the same diameter wire, steel toughness is three times the same diameter, and weighs only wires of the same diameter about 1/5.

At first glance, one strand of F-12 high-strength organic fibers looks like spirea in the hands of textile workers, but they are fiber family of Hercules. F-12 high-strength organic fiber twisted rope in the thickness of a thumb can lift a weight of 46 tons, the same thickness of wire rope can only lift a weight of 8 tons.

F-12 high-strength organic fibers used in the solid rocket motor casing in order to increase the range, also used in the helicopter tail rotor blades, airships, helicopters outer skin. At the same time, F-12 can also be made of organic fiber strength lift cables, body armor and other items.



net assisted translation
 
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How does the F-12 compare with Kevlar????....can someone give full specification??
 
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How does the F-12 compare with Kevlar????....can someone give full specification??

The translation says "steel toughness is three times the same diameter." I can't be sure if this is an equivalent measure or not, but I know that Kevlar is five times stronger than steel of equal weight.
 
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How does the F-12 compare with Kevlar????....can someone give full specification??



Comparison:

Average fiber tensile strength:
F-12: 4.6 GPa
Kevlar 149: 3.45 GPa

The elastic modulus
F-12: 110 ~ 170 GPa
Kevlar 149: 179 GPa

Density:
F-12: 1.44 g/cc
Kevlar 149: 1.47 g/cc

MatWeb - The Online Materials Information Resource

This is comparison between Kevlar 149 and F-12. The lesser versions of Kevlar (Kevlar 29 and Kevlar 49, etc) are significantly weaker than Kevlar 149. In this comparison, it can be observed that F-12 has about the same Young's modulus with Kevlar 149, much higher tensile strength and about the same density. In conclusion, it is a significant step up from Kevlar.

One thing I am curious is the price for F-12. For example, Kevlar 149 pretty much out-performs Kevlar 29 in every single category, but it is also almost 5 times more expensive. I wonder how much will F-12 cost.
 
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Kevlar also an organic material was developed in early 1970's about 40 years ago. Better late than never...Congratulations!!!
 
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Kevlar also an organic material was developed in early 1970's about 40 years ago. Better late than never...Congratulations!!!
Kevlar was developed in 1965, so closer to 50 years ago.
 
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f12. made in china .how many days it will work ?

f12. made in china .how many days it will work ?
 
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