Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > How to Knit Carbon Fibers

Abstract:
Textile structures made from silicon carbide fibers are very interesting for manufacturing of fiber reinforced high temperature resistant ceramic matrix composites (CMC) materials. To produce such textile structures a one or multi-step manufacturing processes like braiding, weaving, warp, or weft knitting is necessary. Depending on the fiber packing density and orientation the fabric structure, the stiffness, deformation, and fracture behavior of the fabric structure vary in a wide range.

How to Knit Carbon Fibers

Germany | Posted on April 12th, 2012

In contrast to woven fabrics, which exhibit a low drapability and stretchability in different directions, warp-knitted fabrics are formed by creating loops which give rise for high flexibility and deformability. However, a high Young's modulus and low deformability of the carbide fibers makes loop formation during knitting difficult. Bending of fibers is also affected by the friction which is caused by ribbing between fibers and the machine parts and by the friction between the fibers inside the roving.

Recently, scientists from the Friedrich-Alexander-University Erlangen-Nuremberg, Germany, demonstrated the manufacturing of knitted fabrics made of silicon carbide fiber. They derived the critical bending loads from fiber knot and loop testing in order to optimize yarn pretension, working speed, and take up speed during knitting processing. Subsequently, they tested and examined the mechanical behavior of the knit fabric under tensional load.

The investigations show that fiber fracture during knitting can be caused by torsion, bending, or tension. The German researchers considered fiber bending as the critical loading condition imposing boundary condition on the knitting process. Reduction of inter fiber friction surface sizing was found to be a critical step in order to produce a continuous knit structure.

The scientists modified the processing conditions for knitting and reduced buckling and friction acting on the silicon carbide fiber rovings. Using penetrating oil the points of largest friction between fibers and critical knitting elements were lubricated which decreased fiber fracture. Compared to woven silicon carbide fabric structures the knitted fiber perform offers a superior flexibility, wider range of pore size and a higher degree of drapability.

####

For more information, please click here

Copyright © How to Knit Carbon Fibers

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Link to the original paper on Wiley Online Library:

Related News Press

News and information

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

MEMS & Sensors Technology Showcase: Finalists Announced for MEMS Executive Congress US 2014 October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Discoveries

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Announcements

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Advancing thin film research with nanostructured AZO: Innovnanoís unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Textiles/Clothing

New Nanocomposites Help Elimination of Toxic Dyes October 15th, 2014

Multifunctional Cotton Fabrics Produced in Iran Using Nanotechnology October 2nd, 2014

Teijin Aramidís carbon nanotube fibers awarded with Paul Schlack prize: New generation super fibers bring wave of innovations to fiber market September 25th, 2014

Excitonic Dark States Shed Light on TMDC Atomic Layers: Berkeley Lab Discovery Holds Promise for Nanoelectronic and Photonic Applications September 11th, 2014

NanoNews-Digest
The latest news from around the world, FREE





  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE