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Title: Pigments which reflect infrared radiation from fire

Abstract

Conventional paints transmit or absorb most of the intense infrared (IR) radiation emitted by fire, causing them to contribute to the spread of fire. The present invention comprises a fire retardant paint additive that reflects the thermal IR radiation emitted by fire in the 1 to 20 micrometer (.mu.m) wavelength range. The important spectral ranges for fire control are typically about 1 to about 8 .mu.m or, for cool smoky fires, about 2 .mu.m to about 16 .mu.m. The improved inventive coatings reflect adverse electromagnetic energy and slow the spread of fire. Specific IR reflective pigments include titanium dioxide (rutile) and red iron oxide pigments with diameters of about 1 .mu.m to about 2 .mu.m and thin leafing aluminum flake pigments.

Inventors:
 [1]
  1. (Oakland, CA)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
OSTI Identifier:
871856
Patent Number(s):
US 5811180
Assignee:
Regents of University of California (Oakland, CA) LBNL
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pigments; reflect; infrared; radiation; fire; conventional; paints; transmit; absorb; intense; emitted; causing; contribute; spread; comprises; retardant; paint; additive; reflects; thermal; 20; micrometer; wavelength; range; spectral; ranges; control; typically; cool; smoky; fires; 16; improved; inventive; coatings; adverse; electromagnetic; energy; slow; specific; reflective; titanium; dioxide; rutile; iron; oxide; diameters; leafing; aluminum; flake; spectral range; wavelength range; infrared radiation; iron oxide; electromagnetic energy; titanium dioxide; radiation emitted; magnetic energy; reflect infrared; intense infrared; reflective pigment; fire retardant; /428/

Citation Formats

Berdahl, Paul H. Pigments which reflect infrared radiation from fire. United States: N. p., 1998. Web.
Berdahl, Paul H. Pigments which reflect infrared radiation from fire. United States.
Berdahl, Paul H. Thu . "Pigments which reflect infrared radiation from fire". United States. https://www.osti.gov/servlets/purl/871856.
@article{osti_871856,
title = {Pigments which reflect infrared radiation from fire},
author = {Berdahl, Paul H.},
abstractNote = {Conventional paints transmit or absorb most of the intense infrared (IR) radiation emitted by fire, causing them to contribute to the spread of fire. The present invention comprises a fire retardant paint additive that reflects the thermal IR radiation emitted by fire in the 1 to 20 micrometer (.mu.m) wavelength range. The important spectral ranges for fire control are typically about 1 to about 8 .mu.m or, for cool smoky fires, about 2 .mu.m to about 16 .mu.m. The improved inventive coatings reflect adverse electromagnetic energy and slow the spread of fire. Specific IR reflective pigments include titanium dioxide (rutile) and red iron oxide pigments with diameters of about 1 .mu.m to about 2 .mu.m and thin leafing aluminum flake pigments.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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