Low Density Plaster Coating Paste with Aerogel
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Solution Overview
Problem
Existing thermal-insulating materials, particularly those using silicate aerogels, face challenges such as high specific weight, complex production processes, damage during lamination, and difficulty in achieving a thin surface finish on plaster, while also being costly and inefficient in thermal insulation.
Innovation Solution
A low density surface coating paste comprising a mixture of silicate aerogel derived from dry wet silica and aerogel from rice processing by-products, combined with binders and ground cork, providing a synergistic effect for thermal insulation and fireproof properties, with a simple and economical production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If silicate aerogel is used in thermal-insulating materials, then thermal insulation performance is improved, but specific weight increases
Solution Approach 1:
The patent combines silicate aerogel particles with organic closed-cell material microspheres to create a composite thermal-insulating paste. This composite structure allows the material to maintain high thermal insulation performance while reducing specific weight, as the organic microspheres provide additional insulation with low density, compensating for the weight of the silicate aerogel component.
2Loss of energy
If complex composition is used in thermal-insulating paste, then thermal insulation performance is improved, but production cost and complexity increase
Solution Approach 1:
The patent merges multiple functional components into a single integrated paste composition that can be applied in one coating operation. The paste combines silicate aerogel, organic microspheres, binder, and penetrating agent into a unified formulation that provides both thermal insulation and adhesion functions simultaneously, eliminating the need for separate application steps and reducing production complexity.
3Weight of moving object
If lamination process is used to create low density panels, then specific weight is reduced, but aerogel structure is damaged
Solution Approach 1:
The patent changes the processing parameters from high-pressure lamination to low-pressure spray application. By applying the thermal-insulating paste in a spray form onto plaster surfaces, the aerogel particles are deposited without exposure to high molding pressures that would damage their delicate nanostructure, preserving both the low density and structural integrity of the aerogel.
4Loss of energy
If thick layer is applied for thermal insulation, then insulation performance is improved, but application difficulty and material usage increase
Solution Approach 1:
The patent utilizes the porous structure of aerogel particles and organic microspheres to achieve high thermal insulation performance in a thin layer. The porous nature of these materials provides exceptional insulation properties per unit thickness, allowing the paste to deliver effective thermal protection without requiring thick applications, thereby simplifying the application process and reducing material consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The paste offers easy application, high-quality results, synergistic thermal and fireproof performance, low specific weight, and economic production, ensuring the components are not damaged during processing and achieving a homogeneous, lightweight final product.
Implementation Method 1
The utilization of silicate aerogels in the production of thermo-insulating materials allows to obtain an appreciable level of thermal insulation
Implementation Method 2
J. Pidhurney and P.F.Pescatore in 'Aerogel for highly Thermally Insulative Coatings' (June 2012) discuss the use of silica aerogels to achieve lower thermal conductivities
Implementation Method 3
binders from 1 to 30%
Data Source
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AI summary
The low density surface coating paste for plaster, including a silicate aerogel base comprises, in percentage by weight: - a mixture of aerogel with two components from 1 to 50%, including: - silicate aerogel, derived from gel obtained from a process to dry wet silica, from 1 to 38%; - aerogel derived from by-products of rice processing, from 1 to 80%; - binders from 1 to 30%; - ground cork from 1 to 15%; - inert fillers from 0.1 to 10%; - water, residual percentage.