Aerogel thermal insulation material and method for producing the same
By chemically cross-linking starch aerogels, high-strength, hydrophobic and flame-retardant starch-based aerogels are prepared, which solves the problems of low strength and easy collapse due to water absorption of starch aerogels and improves their application in building insulation materials.
CN117362742BActive Publication Date: 2025-10-10JIANGXI YONGTONG TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202311312529.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-11
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2043-10-11
AI Technical Summary
Technical Problem
Starch aerogel has low mechanical strength, is easy to collapse due to water absorption, and has poor flame retardant properties, which affects its application in building insulation materials.
Method used
By chemically cross-linking corn starch with polymeric cross-linking monomers containing nitrogen, phosphorus, and silicon flame retardant elements, a high-strength, hydrophobic, and dense starch-based aerogel is formed. The preparation method includes freezing treatment and freeze drying.
Benefits of technology
The mechanical strength and flame retardancy of starch aerogel are improved, water absorption is reduced, and thermal insulation effect is enhanced, making it suitable for building thermal insulation materials.
✦ Generated by Eureka AI based on patent content.
Abstract
The application relates to the technical field of thermal insulation materials, and discloses an aerogel thermal insulation material and a preparation method thereof. A polysiloxane derivative containing nitrogen and phosphorus flame-retardant elements in a structure is prepared as a polymer crosslinking monomer, chemical crosslinking is carried out with corn starch, a crosslinked gel liquid is formed, and the corn starch-based aerogel thermal insulation material can be prepared through a freezing and drying process. The corn starch-based aerogel thermal insulation material prepared through the chemical crosslinking method has a uniform pore structure, has the characteristics of aerogel, and has the characteristics of good thermal insulation effect, high mechanical strength, strong hydrophobicity, excellent flame-retardant performance and the like by introducing the flame-retardant elements such as nitrogen, phosphorus and silicon and the hydrophobic Si-O bond into the aerogel structure, so that the further application of the aerogel thermal insulation material in building thermal insulation materials is facilitated.
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