THERMALLY EXPANDING VISCOELASTIC MIXTURE Russian patent published in 2023 - IPC C08L15/02 C08L23/22 C08L23/28 C08J9/32 C08J9/228 C08K7/22 E04B1/98 E04H9/02 

FIELD: material engineering.

SUBSTANCE: present invention relates to viscoelastic dampers, which are used in the field of earthquake-resistant construction, and can be used to dampen vibrations in anti-vibration and anti-seismic insulating structures and devices. The thermally expanding viscoelastic mixture is a mixture based on chlorobutyl rubber with high damping properties, chalk and carbon black are used as a filler, industrial oil is a plasticizer, and the Expancel foaming agent is added to the composition to give the composite the properties of a self-expanding material, and thiuram and ground sulfur are used as vulcanizing agents, and vulcanization activator Vulcative C-1 is added with the following ratio of components: chlorobutyl rubber CBR-139 in an amount of 100 weight fractions Vulcative C-1 in the amount of 5 weight fractions, industrial oil I-40 in the amount of 30.8 to 40.8 weight fractions, thiuram in the amount of 5 weight fractions, chalk in the amount of 153.8 to 230.8 weight fractions, carbon black P-803 in the amount of 19.2 to 38.5 weight fractions, Expancel microspheres in the amount of 10 weight fractions, sulfur in the amount of 1.5 weight fractions.

EFFECT: new material satisfies all the required mechanical characteristics and has a unique self-expansion property, which ensures the placement of a thermally expanding viscoelastic mixture in the gap between the damper pipes.

1 cl, 1 dwg, 2 tbl, 5 ex