Thermal Decomposition Mechanism of 2,2-Bis-(4-Hydroxy-phenyl)-1,1-Dichloroethylene-Based Polymers

Ramirez, M. L.

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Thermal Decomposition Mechanism of 2,2-Bis-(4-Hydroxy-phenyl)-1,1-Dichloroethylene-Based Polymers

2001-02-01
By Ramirez, M. L.

File Language:

English

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Creators:

Ramirez, M. L.
Corporate Creators:

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

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

DOT/FAA/AR-00/42
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

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

This work has been conducted as part of the Federal Aviation Administration's (FAA) efforts to develop fire-resistant materials for commercial aircraft cabins. Polymers based on 2,2-bis-(4-hydroxyphenyl)-1,1-dichloroethylene (bisphenol C, BPC) have thermal and physical properties of bisphenol-A polymers but have an order of magnitude lower heat release in flaming combustion. This is due to a thermal degradation mechanism that yields only char and noncombustible gases in a fire. Two thermoplastics and one thermoset BPC-based polymer were studied to establish the decomposition mechanism of these materials. Thermal gravimetric analysis, differential scanning calorimetry, infrared spectroscopy, chromatography, and mass spectrometry were used separately and in combination to characterize the thermal degradation mechanism. Results showed that the major volatiles are hydrogen chloride (HCl) and the degradation products of the linking group. The rearrangement through stilbenes and acetylenes is responsible for the high char yield when burned.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/93875/dot_93875_DS1.pdf
File Type:

[PDF - 1.87 MB]
Collection(s):

FAA Fire Safety
Main Document Checksum:

urn:sha-512:253b3b2e90df4067fa3e08ebc6e843bf50a20019ed0faa87ad52658633a93a3eae62c2a9f43ec961c76a50ad4b5e0141ec907c6e5ff4dcf26456172cb245953c

File Language:

English

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