Preparation process of perlite particles wrapped by aerogel in vacuum
Through the preparation process of vacuum-encapsulating perlite particles of aerogel, the problem of high thermal conductivity of perlite mixtures is solved, and better insulation effect and material stability are achieved.
CN119822671APending Publication Date: 2025-04-15HAINAN JINKAI NEW MATERIALS TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202510045274.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-04-15
AI Technical Summary
Technical Problem
The existing perlite mixture has a high thermal conductivity, which affects its thermal insulation effect.
Method used
The preparation process of vacuum-wrapped perlite particles by aerogel, including selecting perlite ore sand of suitable particle size, removing dust and impurities on the surface, expanding perlite through high-temperature roasting, vacuuming and eliminating air in the gaps, spraying isolation materials to wrap and dry.
Benefits of technology
It reduces the thermal conductivity of perlite, improves its insulation effect, and increases the shelf life and stability of the material.
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Figure CN119822671A_ABST
Abstract
The invention provides a preparation process of aerogel vacuum-coated perlite particles, and relates to the technical field of perlite preparation processes, and the preparation process comprises the following steps: step 1, selecting perlite ore sand with a proper particle size; 2, dust and impurities on the surface of the perlite are removed, and the cleaned perlite is obtained; 3, draining the cleaned perlite, and performing high-temperature roasting to enable the perlite to be expanded; 4, vacuumizing the calcined and expanded perlite to remove air in gaps of the perlite; 5, spraying an isolation material on the outer surface of the vacuum-discharged perlite for wrapping; 6, drying the perlite sprayed with the isolation material, and then breaking vacuum; gas in the perlite can be exhausted, the content of the gas in the perlite can be reduced, the heat conductivity coefficient of the perlite can be reduced, the heat preservation effect of the perlite can be improved, the perlite can isolate external water vapor and air during storage, the shelf life of the material can be prolonged, and the stability can be improved.
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