Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Investigation Of Condensation Type Elastomers

Report Number: WADC TR 55-221 Part 3
Author: Schweiker, George C.
Author: Deleo, Rudolph N.
Author: Marks, Burton S.
Author: White, Russell R.
Corporate Author: Hooker Electrochemical Company
Laboratory: Materials Laboratory
Date of Publication: 1957-05
Pages: 54
Contract: AF 33(616)-2421
Project: 7340
Task: 73404
PB Number: PB131178
AD Number: AD0118294

Abstract:
The ultimate goal of the exploratory investigations described is the development of a rubber for special Air %rce applications. High thermal stability (350 F or higher); resistance to aromatic fuels, synthetic ester base oils and hydraulic fluids; resistance to ozone and to weathering oxidation effects; resistance to acids, bases, and salts; resistance to abrasion; and satisfactory performance at -65 F or lower are major requirements for such an elastomer. Preliminary compounding and testing attudies with an elastomer based on a fluorine containing polyester, made from adipyl chloride and 2,2,3,3,4,4-hexafluoropentanediol, have given promising results. At the present stage of development, compounded and crosslinked specimens of huafluoropentylene adipat. retain useful mechanical properties after aging in air at 400 F (70 and 168 hour tests), and in diester oil at 350 F (70 hour test); are resistant to paraffinic and aromatic fuels; and exhibit a brittle temperature of -98 F (ASTM D-746). This report describes the preparation, compounding, cross-linking and properties of hexafluoropentylene adipate elastomer as well as syntheses and properties of other fluorine containing condensation polymers and difunctional starting materials. Data indicating that increasing fluorine content of the polymers decreases their solubility in common solvents without regard to position of the fluorine in the polymer are extended. On the other hand, these data show that position of the fluorine, rather than total fluorine content of the polymer is of most importance in affecting brittle temperatures.


Provenance:
IIT
Download this report

(PDF, 2.96 MB, 54 pages)

Other options for obtaining this report

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a full-image download of the report, exists at DTIC

Via National Technical Information Service:
The NTIS Order Number for this report is: AD118294
This report may have been digitized and made freely available for public download, or made publicly available for purchase by the National Technical Information Service through their online database, the National Technical Reports Library

Indications of Public Availability
A PB Number, PB131178 , exists for this report, indicating public availability of the report at time of publication

No digital image of an index entry indicating public availability is currently available
The inside cover of this report indicates that it was released for public sale

Related Reports

This report has the following parts/volumes: