Polymer composite provides better fire protection than steel

Mar 27, 2006

The U.S. Navy needs lighter materials so ships will go further faster. One way to do that is to use new composite materials. But how will these materials respond to fire -- one of the most critical safety concerns on a ship? Virginia Tech material scientists have developed models to test composites for fire resistance – and have a recommendation.

John Bausano, a doctoral student in the chemistry-engineering interdisciplinary Macromolecular Science and Infrastructure Engineering program at Virginia Tech, will present his research in the Excellence in Graduate Polymer Science Research Symposium at the 231st American Chemical Society National Meeting in Atlanta on March 26-30.

Working with Jack Lesko, associate professor of engineering science and mechanics, Bausano developed a testing method – a one-sided heat flux test that can be used on a sample as small as one inch by six inches (1x6") to test a commercially available material – E-glass vinyl ester composite laminates. One side of the material is heated to simulate fire on one side of a wall. A load is placed on one edge to simulate a load-bearing wall. "We measure the deflection, failure, and how hot it gets on the cool side," said Bausano. "That is an important issue because you don't want the fire to spread."

His findings are that the composite material being tested does localize heat, "especially compared to steel, which conducts heat in all directions."

His recommendation as other materials and processing are considered is, "Develop the material with as high a glass transition (Tg) temperature as you can in order to sustain structural rigidity. That would help the engineers and the sailors. The longer the material stays above Tg, or the softening point, the longer the wall will stand. Tg is the upper temperature level of usefulness."

Composite materials would also be useful on oil platforms, where fire is also a concern, he said.

Source: Virginia Tech

Explore further: New iPhones deliver big profits for Apple (Update)

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Robots recognize humans in disaster environments

17 minutes ago

Through a computational algorithm, a team of researchers from the University of Guadalajara (UDG) in Mexico, developed a neural network that allows a small robot to detect different patterns, such as images, ...

Researchers developing algorithms to detect fake reviews

37 minutes ago

Anyone who has conducted business online—from booking a hotel to buying a book to finding a new dentist or selling their wares—has come across reviews of said products and services. Chances are they've also encountered ...

Skin icons can tap into promise of smartwatch

3 hours ago

You have heard it before: smartwatches are cool wearables but critics remind us of the fact that their small size makes many actions cumbersome and they question how many people will really have them on their ...

User comments : 0