Accession Number : AD0473140


Title :   RESEARCH ON IMPROVED EPOXY RESINS.


Descriptive Note : Quarterly progress rept. no. 10, 1 Jul-1 Oct 65,


Corporate Author : UNION CARBIDE CORP BOUND BROOK NJ PLASTICS DIV


Personal Author(s) : Carey, R H ; Gibson, C A ; Harvey, J R ; Mulvaney, W P ; Sellers, R F


Report Date : 01 Oct 1965


Pagination or Media Count : 68


Abstract : The primary purpose of this program is to define the correlations of novel polyepoxide molecular configurations with the physical properties of cured resins and composites as the initial step in providing significant improvements in filament reinforced plastics for deep submergence structures. The synthesis and evaluation of new epoxy resin configurations, especially those derived from cyclopentenyl phenols, were continued. One new type of epoxy resins, typified by EXRN-1972, showed potential high performance in modulus, strength, and resistance to crack propagation. The poly-functional resins, such as EXRN-2280 and EXRN-1798, showed potential high performance at elevated temperatures. Homopolymers of bis- (2,3-epoxycyclopentyl) ether, developed elsewhere but screened for potential in deep submergence applications under the NRL Program, exhibited generally good performance in salt water and as high as 14,500 psi interlaminar shear strength. The shear strength of these 'million-modulus' homopolymers was comparable to that of EP-2114, another 'million-modulus' epoxy resin. Cast resin properties from a series of epoxy resins hardened with several aromatic diamines are reported, but these data are sufficient to advance only speculative conclusions. (Author)


Descriptors :   SYNTHESIS(CHEMISTRY) , UNDERWATER EQUIPMENT , COMPOSITE MATERIALS , CYCLOPENTENES , RUPTURE , PHENOLS , COMPRESSIVE PROPERTIES


Distribution Statement : APPROVED FOR PUBLIC RELEASE