Silane-modified polyether adhesive for sealing fabricated concrete buildings and manufacturing method thereof

Abstract

The invention relates to a silane-modified polyether adhesive for sealing fabricated concrete buildings and belongs to the technical field of sealants. The silane-modified polyether adhesive is mainly prepared from silane-terminated polyether, a plasticizer, a bulking filler, a toner, a thixotropic agent, an ultraviolet absorbent, an ultraviolet stabilizer, a water removing agent, an adhesion accelerant and a curing agent, wherein the silane-terminated polyether is polyoxypropylene capable of hydrolyzing silane group. Through the silane-modified polyether adhesive, the silane-terminated polyether with the advantages of silicone sealants and polyurethane sealants is adopted and is matched with the specific adhesion accelerant, so that the prepared silane-modified polyether adhesive has high adhesion on cement prefabricated slabs under the normal temperature or the cement prefabricated slabs after being soaked in water; the silane-modified polyether adhesive is especially suitable for sealing joints of the fabricated concrete buildings.

Description

technical field [0001] The invention relates to the technical field of sealants, in particular to a silane-modified polyether glue used for sealing prefabricated concrete buildings and a manufacturing method thereof. Background technique [0002] Silane-modified polyether adhesive is a new generation of elastic sealant developed with the development of modern architecture from rigid structure to flexible (frame) structure. Because it has the advantages and strengths of silicone sealant and polyurethane sealant, It has the advantages of excellent weather resistance, durability, high resistance to deformation and displacement, good adhesion, paintability, environmental friendliness, low staining, low viscosity and excellent workability. Get the attention of the domestic construction industry. [0003] With the development of modern building technology, prefabricated concrete buildings have become an inevitable trend in the development of residential technology because of thei...

AI Technical Summary

Problems solved by technology

Among them, prefabricated components refer to prefabricated concrete reinforced components (PC components) produced in factories. Surface treatment agents and release agents are often used in the process of prefabricated components. The release agent uses mineral oil as the main raw material. It is prepared by adding wax and other materials, and mineral oil can saponify with alkali in cement concrete to form "metal soap", which affects the bonding performance of the sealant, and even a simple mineral oil residue will also affect the seal. Adhesiveness of the glue; at the same time, after the prefabricated components are made, in order to protect their surface, they are sometimes coated with surface treatment agents, which will also cause difficulties in the bonding of the sealant

There are also factors that affect the bonding effect of the sealant: since the prefabricated component is made of cement concrete, which is a porous building material, if it is soaked in water for a period of time, the water will slowly penetrate into the bond of the sealant surface and damage its interfacial layer, resulting in failure of the sealant bond

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