THE INFLUENCE OF RADIATION CROSS-LINKING ON MICRO-INDENTATION CREEP AND THE GEL CONTENT OF POLYAMIDE

Abstract

Radiation Cross-linking is a process, at which the control change of polymers carried out of the purpose to reach the new polymeric materials with modified properties occurs. The submitted study deals with the influence of radiation doses on micro-creep properties of filled on non-filled polyamide 6.6. Micro-indentation creeps of modified polyamide were measured using modern machinery DSI method (Depth-Sensing Indentation) and were compared to the basic (non-irradiated) material. From the results, it is evident, that the technology of radiation cross-linking has a positive influence on micro-creep properties of tested polyamide when the improvement of micro-creep properties was in the order of ten percent against the basic (non-irradiated) material. The influence of radiation cross-linking on micro-creep properties was confirmed by the measurement of the created cross-linked part (gel content) at individual tested radiation dose.

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