Cement-based aerogel heat preservation and heat insulation coating material for concrete and spraying construction technology of cement-based aerogel heat preservation and heat insulation coating material

By modifying the cement-based aerogel thermal insulation coating material of silica-carbon nanotube composite aerogel powder and multi-emulsion, the problems of high thermal conductivity, easy aging and complex construction of concrete thermal insulation materials are solved, and efficient and durable thermal insulation performance and strength improvement are achieved, which is suitable for concrete structures in harsh environments.

CN120682655AActive Publication Date: 2025-09-23NANJING HYDRAULIC RES INST +1
24 Cites 6 Cited by

Patent Information

Application Number
CN202511187680.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-25
Publication Date
2025-09-23
Estimated Expiration
2045-08-25

AI Technical Summary

Technical Problem

Existing concrete thermal insulation materials have problems such as high thermal conductivity, poor thermal stability, easy aging, easy cracking, poor durability, and complex construction. Aerogel materials are unevenly dispersed in cement-based systems, have weak interfacial adhesion, and insufficient mechanical properties.

Method used

The cement-based aerogel thermal insulation coating material composed of modified silica-carbon nanotube composite aerogel powder, ultra-fine sand, hollow glass microspheres, etc., combined with multi-emulsion and efficient spraying construction technology, through multi-stage dynamic mixing and the use of temperature-sensitive polymer emulsion, improves the thermal insulation performance, interface bonding strength and mechanical properties of the coating.

Benefits of technology

It has achieved a thermal conductivity as low as 0.025W/(m·K), compressive strength ≥35MPa, tensile strength ≥4.0MPa, interface adhesion ≥3.5MPa, excellent weather resistance, and a performance retention rate of ≥90% after 1000h of UV light irradiation. It is suitable for thermal insulation of concrete structures in harsh environments.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a cement-based aerogel heat preservation and heat insulation coating material for concrete and a spraying construction process of the cement-based aerogel heat preservation and heat insulation coating material, and belongs to the technical field of concrete materials. The coating material is prepared from powder, composite emulsion and water, and the powder is prepared by mixing superfine sand, cement, modified silicon dioxide-carbon nanotube composite aerogel powder, hollow glass beads, nanofibers, graphene nanosheets, an ultraviolet light absorber, a water reducing agent and a defoaming agent. The composite emulsion is composed of an acrylate copolymer emulsion, a polyvinyl acetate-ethylene emulsion, a temperature-sensitive polymer emulsion and a coalescing agent. Based on the multi-stage pore network and multi-component emulsion optimization design and multi-component synergistic effect, the material has good fluidity after being mixed, and has low heat conductivity coefficient, high strength and high toughness after being hardened; the construction technology of high-pressure water flushing and layered spraying is provided, and the method has the advantages of being efficient in construction, stable in quality and the like and can be applied to heat preservation and heat insulation of a concrete structure in a severe environment.
Need to check novelty before this filing date? Find Prior Art