A kind of nano-modified silane, siloxane waterproofing agent and preparation method thereof

Abstract

The invention relates to the field of concrete structure protection, mainly nano-modified silane and siloxane water-repellent for concrete surface waterproof and anti-corrosion protection and a preparation method thereof. The method is as follows: step 1, dissolving graphene in small molecule alcohols and ester solvents, and dispersing by ultrasonic waves for 30-60 minutes to form a uniformly dispersed graphene dispersion; step 2, dissolving isooctyltriethoxysilane Mix with isobutyltriethoxysilane and ester small molecule solvent according to a certain ratio, and mix them uniformly by mechanical stirring for 15-45 minutes to obtain a silicone dispersion; step 3, mix the graphene dispersion and silicone dispersion according to 1: The ratio of 3~1:10 can be uniformly dispersed under the condition of mechanical stirring to obtain nano-modified silane and siloxane waterproofing agent.

Description

technical field

[0001] The invention relates to the field of concrete structure protection, mainly nano-modified silane and siloxane water-repellent for concrete surface waterproof and anti-corrosion protection and a preparation method thereof. Background technique

[0002] Generally, silane and siloxane can form a regular molecular structure after coating on the concrete surface, so that the concrete surface has a strong hydrophobic effect. Since water cannot spread on the concrete surface, the water absorption rate of the coated concrete is greatly reduced, and the corrosive ions dissolved in the water cannot enter the interior of the concrete with the liquid water. Therefore, the method of silicone coating is an effective concrete protection method.

[0003] However, due to the presence of acidic corrosive gases such as carbon dioxide and sulfur dioxide in the ambient atmosphere, the waterproof structure on the surface of the concrete structure cannot prevent the acid ga...