terça-feira, 16 de junho de 2009

Malabarismo de Fogo - Comparação Fibra Cerâmica vs. Kevlar

Glass Fibre

Glassfibre wicks are made from very small glass fibre yarn (less than 9 microns thick) that are then woven to produce a white, soft and flexible fabric.

FOR - VANTAGENS

Fibreglass is quite happy up to 1650 degree Celsius (3002 degree Fahrenheit). Much higher than KEVLAR ®!

  • In the correct weave they are very absorbent.
  • Soaks in fuel well.
  • Excellent capillary flow of fuel to the flame.
  • Excellent abrasion resistance, more so than Aramids or KEVLAR ®.
  • Excellent heat insulator (which is why it is prefered for use in a Fire blanket)
AGAINST - DESVANTAGENS
  • Market perception that this glass fibre yarn is a major irritant to the skin and danger to the body which is untrue. It is however true that many other Fiberglass products have had this problem.
  • The pulling strength of Fiberglass is much lower than aramids or KEVLAR ®, but we are not exactly towing cars with the stuff.

100% Kevlar ® or 100% Aramid

100% KEVLAR ® or 100% Aramid would definitely be the most expensive form to make a wick out of. Most shops put "KEVLAR Wick" and omit everything else in the weave.

FOR -
VANTAGENS

  • In the correct weave they are very absorbent.
  • Soaks in fuel well.
  • Excellent capillary flow of fuel to the flame.
  • Reasonable abrasion resistance, although much less than wire inserted or fiberglass.
  • Excellent heat insulator
  • Great for towing cars???
  • Looks like really good superior and solid wick at the start
AGAINST - DESVANTAGENS
  • Weave will fall apart and wear quicker than Wicks woven with metal strands or fiberglass.
  • KEVLAR ® begins to evaporate at 427degree Celsius (800 degree Fahrenheit). turns into a gas.
  • KEVLAR ® and Aramids degrade slowly when under daylight (UV).
Fonte: Home of Poi

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