Composite Particles in Insulation Renders
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Solution Overview
Problem
External thermal insulation composite systems face challenges with mechanical resilience and fire protection, particularly in thin-layer systems where they lack resistance to mechanical loads and can fail to maintain barrier function during fires due to heat and smoke formation.
Innovation Solution
Incorporating composite particles with a weight ratio of 15-40% inorganic solid to organic polymer in the finishing render, which provides enhanced mechanical resilience and maintains barrier function even under fire conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If thin-layer systems are used for finishing renders, then ease of processing and quick strength achievement are improved, but mechanical resilience and fire protection are worsened
Solution Approach 1:
The patent applies composite materials by incorporating inorganic solid particles (such as silica, alumina, or metal oxides) into the polymer-based finishing render. This creates a composite material that combines the ease of processing and quick setting of polymer renders with the mechanical strength and fire resistance of inorganic materials, thereby resolving the contradiction between ease of operation and mechanical resilience.
2Ease of operation
If polymer-bonded systems are used for finishing renders, then ease of processing and quick strength achievement are improved, but fire protection is worsened due to heat and smoke formation
Solution Approach 1:
The patent converts the harmful effect of polymer melting and dripping during fires into a beneficial outcome by incorporating inorganic fire retardant particles. These particles promote char formation and prevent melt dripping, transforming the potentially harmful polymer decomposition process into a protective mechanism that reduces heat and smoke formation while maintaining the ease of processing advantages of polymer-bonded systems.
3Reliability
If inorganic solid content is increased in composite particles, then fire protection and mechanical resilience are improved, but manufacturing complexity is worsened
Solution Approach 1:
The patent applies parameter changes by optimizing the content ratio of inorganic solid particles to polymer binders within specific ranges (e.g., 30-70% inorganic content). This parameter optimization ensures sufficient fire protection and mechanical strength while avoiding excessive manufacturing complexity. The patent also specifies particle size ranges (0.1-2.0 mm) to balance performance with ease of production.
Data Source
AI summary
The invention relates to a composite heat insulation system, comprising an insulating layer, optionally a reinforcing layer, which is applied to the insulating layer, and a cover layer, which is applied to the insulating layer or, if present, to the reinforcing layer, characterized in that the cover layer contains composite particles, wherein the composite particles contain at least one organic polymer and at least one inorganic solid, wherein the weight percentage of inorganic solid is 15 to 40 wt %, with respect to the total weight of organic polymer and inorganic solid in the composite particle.