Abstract: Abstract: Experimental study of a shape memory polymer composite is carried out as part of the scientific and technological works on the development of promising designs of space antenna reflectors. The studied material consists of three layers of carbon biaxial fabric St 12073 impregnated with a polyurethane-based Diaplex MP5510 polymer matrix. This material is intended for manufacturing of a frame used in the construction of a precision composite space antenna reflector. When the reflector is opened to the transport position, the frame recovers the previously specified shape by heating, which increases the stiffness of the reflector shell at the periphery and improves the accuracy of the reflecting surface. In order to study the functional and mechanical properties of the frame material during its manufacturing and various modes of operation, samples with different reinforcement schemes are tested: [03], [0/±60], and [0/±45]. The degree of fixation, degree of recovery, and rate of shape recovery depending on the reinforcement scheme, strain rate, and exposure time in the strained state are investigated. For this purpose, a test program is developed for the samples, which includes several stages. During the first stages, tests for fixing and recovery of the shape were performed for the case of the three-point bending of flat samples at strain rates of 1, 5 and 10 mm/s and exposure time in the strained state of 24, 48, and 96 h. According to the test results, the material with the reinforcement scheme [03] was accepted as optimal for manufacturing the frame, because it had the maximum degree and rate of shape recovery. At the final stage of research, the elastic modulus and tensile strength were determined for the selected material at different frame operating temperatures: –50, +20, and +60°C. The studies showed that the composite material has the required shape memory effect and is promising for the production of frames only with thermal insulation. © 2021, Pleiades Publishing, Ltd.

Cite: Moskvichev E.V. , Larichkin A.Y.
Study of the Functional and Mechanical Properties of a Shape Memory Polymer Composite for a Space Antenna Reflector
Inorganic Materials. 2021. V.57. N15. P.1491-1496. DOI: 10.1134/S0020168521150139 WOS Scopus РИНЦ OpenAlex

Identifiers:

Web of science:	WOS:000744843300007
Scopus:	2-s2.0-85122978053
Elibrary:	48128139
OpenAlex:	W4205891627

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