Evaluation of the Low-temperature Properties of Inherently Ozone-resistant Elastomers PDF Download
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Author: Paul E. Gatza
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Book Description
The report covers an evaluation of the potential for end-item applications of several elastomers purported to be both inherently ozone resistant and serviceable at temperatures as low as -65F. Using specification requirements detailed in Specifications MIL-I-3930C and MIL-R-14328A as guidelines, results of physical testing and compound development studies on ethylene-propylene, modified butyl, and propylene oxide elastomers are compared with results obtained on a compound of SB-R 1023. Although the latter is not an inherently ozone-resistant rubber, it is acceptable for use at -65F. Other physical characteristics such as heat, oxygen, water and weather resistance, deemed essential for satisfactory performance in general-purpose applications, were determined for these elastomers and are analyzed and discussed. (Author).
Author: Paul E. Gatza
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Book Description
The report covers an evaluation of the potential for end-item applications of several elastomers purported to be both inherently ozone resistant and serviceable at temperatures as low as -65F. Using specification requirements detailed in Specifications MIL-I-3930C and MIL-R-14328A as guidelines, results of physical testing and compound development studies on ethylene-propylene, modified butyl, and propylene oxide elastomers are compared with results obtained on a compound of SB-R 1023. Although the latter is not an inherently ozone-resistant rubber, it is acceptable for use at -65F. Other physical characteristics such as heat, oxygen, water and weather resistance, deemed essential for satisfactory performance in general-purpose applications, were determined for these elastomers and are analyzed and discussed. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Author: F. W. Bickel
Publisher:
ISBN:
Category :
Languages : en
Pages : 90
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Book Description
This second interim report covers the work performed and the test data obtained from compounds reported in the first interim report 1 June to 30 November 1965 for Phases 1, 3, and 4 in the screening and evaluation of low temperature fuel resistant elastomers, under the following four phases: Phase 1 - screening and evaluation of various elastomers to determine resistance to aromatic fuels and serviceability at temperatures to -65 F; Phase 2 - compounding studies of elastomers selected from Phase 1 work, studies directed toward improvement of low temperature and fuel resistance properties; Phase 3 - evaluation of a compound developed by ERDL to determine conformance with requirements of MIL-G-1086C; Phase 4 - evaluation of resistance of low, medium and high acrylonitrile rubber to fuels containing increasing amounts of aromatic hydrocarbons. (Author).
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 212
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Book Description
Author: Bukhina
Publisher: CRC Press
ISBN: 9047422422
Category : Technology & Engineering
Languages : en
Pages : 193
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Book Description
This book focuses on the effect the composition of rubbers and the conditions of their processing have on low-temperature resistance. It considers the nature and development of two physical processes, glass transition and crystallization, determining low-temperature behavior of elastomers. The book addresses the effects of deformation, pressure, an
Author: Frank B. Testroet
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
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Book Description
New elastomers and related materials were evaluated. Ethylene propylene terpolymer elastomers were proven useful for military applications because of their low cost, good aging resistance at temperatures to 300 F., inherent ozone resistance coupled with excellent flexibility and resistance to embrittlement at temperatures of -55 F. and -85 F., respectively. Hydrin 100 (an epichlorohydrin homopolymer) and hydrin 200 (a copolymer of epichlorohydrin and ethylene oxide) were found of interest because of their good aging resistance at temperatures to 300 F., low swell (8%) in hot petroleum oil and, in the case of Hydrin 200, flexibility and resistance to embrittlement at -50 F.A urethane elastomer possessing oil resistance (14% swell in hot petroleum oil), good elastic recovery, and outstanding low temperature properties (non brittle U-85 F. and flexible M-67 F.) synthesized by a contractor was evaluated. Examples of military rubber end items are presented. (Author).
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1776
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1130
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Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1698
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Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1224
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Book Description
