Accession Number : AD0702917

Title :   PHENOMENOLOGICAL BASES OF AIRTIGHTNESS OF REINFORCED POLYMERS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Tsyplakov,O. G.

Report Date : 14 NOV 1969

Pagination or Media Count : 15

Abstract : The mechanism of crack formation in reinforced polymers is considered and a model is given to explain the sealing power of these materials. Theoretical methods are discussed for increasing the sealing capacity of reinforced polymers by increasing the concentration of binder and its elasticity and by reducing reinforcement deformation and the diameter of the reinforcing fibers. It is pointed out that the use of twisted fibers or fabric reduces the strength of the reinforced material by introducing anisotropy in tensile properties. A reduction in the diameter of fibers is complicated by technological difficulties in manufacturing the fibers themselves and in making components from the resultant materials. In making airtight components from SVAM and AG-4S fiberglass-reinforced plastics, additional measures should be taken to provide hermetic sealing without relying on the sealing power of the plastics themselves.

Descriptors :   (*REINFORCED PLASTICS, HERMETIC SEALS), BINDERS, ELASTIC PROPERTIES, REINFORCING MATERIALS, DEFORMATION, GLASS TEXTILES, USSR

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE