FIELD: medical engineering.
SUBSTANCE: method involves stirring polyvinyl chloride plastic based on vinyl chloride copolymers and dibutyl phthalate to produce uniform mass, packing, applying pressure for 6-65 min, heating to 100-105°C, holding for 30-40 min. Polyvinylbutyral is additionally introduced before mixing all ingredients. Polyvinylbutyral is first bound to dibutyl phthalate, heated to 85-95°C, held 30-35 min long to achieve complete dissolving.
EFFECT: prolonged service life.
2 tbl
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