Water-swelling delayed curing material

Abstract

The invention provides a water-swelling delayed curing material, which comprises a curing material, a water-soluble material and an expanding material, wherein the surface of the curing material is coated with the water-soluble material to form a shell-nuclear structure. The surface of the curing material is coated with the water-soluble material to form the shell-nuclear structure so as to effectively avoid a contradiction of simultaneous expansion and curing. When the water-swelling curing material meets water, an expanding component adsorbs water to expand to extrude with a hole so as to realize early-stage blocking. Meanwhile, the water-soluble material as a shell in the shell-nuclear structure slowly dissolves after meeting water so as to generate an organic molecule which has a crosslinking function, an accelerating function is realized on the curing of subsequent curing materials and the fixing of the curing material for the expanding material, water further carries out curing reaction with the curing component, and blocking and seepage prevention are favorably finished under the joint function of the curing material, the expanding material and water.

Description

technical field [0001] The invention belongs to the field of leakage plugging, in particular to a water-swelling and time-delayed solidification material. technical background [0002] With the strengthening of people's awareness of environmental protection, landfills and other places involving the leakage of dangerous liquids have adopted multi-level protective measures. Since it is difficult to effectively evaluate the effect of these protective measures due to geological effects, they are often added to them. Leakproof material. Water-swelling (such as water-absorbing resin) and water-curing (such as cement) are two common types of leak-proof materials. The former swells when it meets water, and the latter undergoes a curing reaction and solidifies when it meets water. The effect of blocking holes. [0003] However, these two types of materials still have some deficiencies in engineering applications. [0004] The water-swellable material introduces water molecules int...

AI Technical Summary

Problems solved by technology

However, leakage often occurs on the interface with high pressure difference. It takes a certain amount of time for the cement to solidify (the early strength is small, and the strength is strong after complete solidification), and the solidification process requires a relatively static environment, otherwise the bonding and connection of hydrates will be affected. , and once holes are formed on the interface with high pressure difference, the water flow will flow out continuously, disturbing the overlapping and connection of hydrates, and the early strength of cement is weak, so it is difficult to withstand the impact of water flow at the interface with high pressure difference, so it is difficult to form an effective to block