A kind of graphene expansion joint waterproof plugging cement

Abstract

The invention discloses waterproof and leakage-preventing graphene cement gum for expansion joints. The waterproof and leakage-preventing graphene cement gum is prepared from the following componentsin parts by weight: 65-112 parts of NBR (nitrile butadiene rubber), 27-49 parts of IIR (isobutylene isoprene rubber), 8-13 parts of graphene nanosheets, 0.1-0.3 parts of an anti-aging agent, 0.5-2 parts of a coupling agent and 5-9 parts of a flame retardant. The cement gum has good flame retardancy and better bonding strength, tensile strength and elongation.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a graphene expansion joint waterproof plugging cement. Background technique [0002] At present, due to the failure of the original waterproof system in various construction engineering expansion joints, a large number of ground and underground construction spaces, such as high-speed rail, subway tunnels, urban pipe galleries, and underpass tunnels, have large-scale leakage, which affects the use effect and even accidental disasters. ACCIDENT. [0003] CN107513192A discloses a novel plugging sealant containing the following components by weight: nitrile rubber 90-100, white carbon black 15-25, talcum powder 8-12, carbon fiber 10-30, dioctyl ester 10- 20, antimony trioxide 10-20, magnesium oxide 5-10, zinc oxide 5-8, coumarone 5-8, coupling agent 2-3, sulfur powder 1-3, antioxidant 2-3, stearin Acid 1-3, paraffin 1-2, accelerator CZ 0.5-1, anti-scorch agen...

AI Technical Summary

Problems solved by technology

It uses nitrile rubber as the main material, and it is modified by white carbon black, magnesium oxide, zinc oxide, carbon fiber, talcum powder, coumarone and other components, and a certain rubber processing technology is obtained to obtain a The plugging sealant with high versatility and low price has good corrosion resistance to acid and alkali leakage media, but it has many components, and it is not a kind of cement in essence, so the plugging effect is average

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