Fire-Resistant Elastomers

Lyon, Richard E.

i

Fire-Resistant Elastomers

2002-05-01
By Lyon, Richard E.

File Language:

English

Details

Creators:

Lyon, Richard E.
Corporate Creators:

United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Airport and Aircraft Safety Research and Development Division.
Corporate Contributors:

United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research
Subject/TRT Terms:
Publication/ Report Number:

DOT/FAA/AR-TN01/104
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Technical Note
Corporate Publisher:

United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center
Abstract:

Molecular design of semi-inorganic rubbers has yielded flexible polysilphenylene-siloxane and polyphosphazene elastomers having the fire resistance of rigid, high-temperature engineering plastics (e.g., polyaramids, polyetherketones, and polyarylsulfones) based on the results of microscale combustibility data. In flaming combustion, a commercially viable polyphosphazene exhibited a 75% reduction in heat release rate compared to the polyurethane rubber currently used in fire- blocked foam aircraft seat cushions. A comparable reduction in heat release rate is obtained at lower cost by adding expandable graphite flakes to the polyurethane formulation. The graphite flakes exfoliate during heating to produce a 2000% volumetric expansion of the burned rubber which shields and insulates the underlying material from the heat source and lowers the heat release rate significantly. Future work will explore the use of relatively low-cost expandable graphite technology in semi- inorganic rubber to obtain a fireproof (zero heat release rate) seat cushion foam.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/89805/dot_89805_DS1.pdf
File Type:

[PDF - 936.56 KB]
Collection(s):

FAA Fire Safety ; US Transportation Collection
Main Document Checksum:

urn:sha-512:e41945c47f51e82eda2588316fbf40df81d4f451f76a8e09b4aefbac748b6beb65fe511ef6cb202a52039be098fcb3969a67eb42fec587af98374dabdea09c4b

File Language:

English

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